CN1141289C - Clean productive process for extracting citric acid from citric acid fermentation liquid - Google Patents
Clean productive process for extracting citric acid from citric acid fermentation liquid Download PDFInfo
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- CN1141289C CN1141289C CNB011380187A CN01138018A CN1141289C CN 1141289 C CN1141289 C CN 1141289C CN B011380187 A CNB011380187 A CN B011380187A CN 01138018 A CN01138018 A CN 01138018A CN 1141289 C CN1141289 C CN 1141289C
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- citric acid
- resin
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- adsorption
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- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 title claims abstract description 372
- 238000000034 method Methods 0.000 title claims abstract description 46
- 239000007788 liquid Substances 0.000 title claims abstract description 43
- 238000000855 fermentation Methods 0.000 title claims abstract description 41
- 230000004151 fermentation Effects 0.000 title claims abstract description 41
- 230000008569 process Effects 0.000 title claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 126
- 229920005989 resin Polymers 0.000 claims abstract description 126
- 238000001179 sorption measurement Methods 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000005516 engineering process Methods 0.000 claims abstract description 17
- 239000002253 acid Substances 0.000 claims abstract description 15
- 235000015165 citric acid Nutrition 0.000 claims description 117
- 238000003795 desorption Methods 0.000 claims description 40
- 238000010521 absorption reaction Methods 0.000 claims description 28
- 229920006395 saturated elastomer Polymers 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 238000007334 copolymerization reaction Methods 0.000 claims description 12
- 239000000178 monomer Substances 0.000 claims description 12
- 229920001577 copolymer Polymers 0.000 claims description 10
- 229920002554 vinyl polymer Polymers 0.000 claims description 10
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 claims description 8
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 8
- 238000005349 anion exchange Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- -1 methacrylic acid glycol ester Chemical class 0.000 claims description 7
- 150000003512 tertiary amines Chemical class 0.000 claims description 7
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 6
- 230000000274 adsorptive effect Effects 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 6
- 238000002336 sorption--desorption measurement Methods 0.000 claims description 6
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 6
- 239000002585 base Substances 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 5
- 229920000768 polyamine Chemical group 0.000 claims description 5
- 150000004291 polyenes Chemical class 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 5
- 240000003183 Manihot esculenta Species 0.000 claims description 4
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims description 4
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 4
- 125000004122 cyclic group Chemical group 0.000 claims description 4
- 238000002086 displacement chromatography Methods 0.000 claims description 4
- 238000006116 polymerization reaction Methods 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 241000228245 Aspergillus niger Species 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- HRQGCQVOJVTVLU-UHFFFAOYSA-N bis(chloromethyl) ether Chemical compound ClCOCCl HRQGCQVOJVTVLU-UHFFFAOYSA-N 0.000 claims description 3
- 125000004218 chloromethyl group Chemical group [H]C([H])(Cl)* 0.000 claims description 3
- 238000007265 chloromethylation reaction Methods 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000011592 zinc chloride Substances 0.000 claims description 3
- 235000005074 zinc chloride Nutrition 0.000 claims description 3
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 claims description 2
- KGIGUEBEKRSTEW-UHFFFAOYSA-N 2-vinylpyridine Chemical compound C=CC1=CC=CC=N1 KGIGUEBEKRSTEW-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 2
- 244000017020 Ipomoea batatas Species 0.000 claims description 2
- 235000002678 Ipomoea batatas Nutrition 0.000 claims description 2
- 229910021627 Tin(IV) chloride Inorganic materials 0.000 claims description 2
- 240000008042 Zea mays Species 0.000 claims description 2
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 2
- 150000001412 amines Chemical group 0.000 claims description 2
- ONJMNXFNTYIEEA-UHFFFAOYSA-N benzene ethene Chemical compound C1=CC=CC=C1.C=C.C=C.C=C ONJMNXFNTYIEEA-UHFFFAOYSA-N 0.000 claims description 2
- ZCZDJNBPZPSQPZ-UHFFFAOYSA-N benzene;prop-1-ene Chemical compound CC=C.C1=CC=CC=C1 ZCZDJNBPZPSQPZ-UHFFFAOYSA-N 0.000 claims description 2
- 235000014633 carbohydrates Nutrition 0.000 claims description 2
- 150000001720 carbohydrates Chemical class 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 235000005822 corn Nutrition 0.000 claims description 2
- 238000010828 elution Methods 0.000 claims description 2
- XEKOWRVHYACXOJ-UHFFFAOYSA-N ethyl acetate Substances CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 2
- 238000005194 fractionation Methods 0.000 claims description 2
- 239000003502 gasoline Substances 0.000 claims description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 2
- 239000003350 kerosene Substances 0.000 claims description 2
- 150000002632 lipids Chemical class 0.000 claims description 2
- 244000005700 microbiome Species 0.000 claims description 2
- 235000013379 molasses Nutrition 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 claims description 2
- 239000000376 reactant Substances 0.000 claims description 2
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 claims description 2
- 238000005829 trimerization reaction Methods 0.000 claims description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims 1
- 125000000467 secondary amino group Chemical class [H]N([*:1])[*:2] 0.000 claims 1
- 125000001302 tertiary amino group Chemical group 0.000 claims 1
- 239000003513 alkali Substances 0.000 abstract description 8
- 150000007524 organic acids Chemical class 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000000843 powder Substances 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 239000003960 organic solvent Substances 0.000 abstract 1
- 238000009738 saturating Methods 0.000 abstract 1
- 230000002194 synthesizing effect Effects 0.000 abstract 1
- 239000000047 product Substances 0.000 description 19
- 238000004519 manufacturing process Methods 0.000 description 11
- 239000000243 solution Substances 0.000 description 9
- 239000012535 impurity Substances 0.000 description 8
- 238000000926 separation method Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 6
- 150000001722 carbon compounds Chemical class 0.000 description 5
- 239000012071 phase Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000008346 aqueous phase Substances 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 4
- 239000012452 mother liquor Substances 0.000 description 4
- 239000008399 tap water Substances 0.000 description 4
- 235000020679 tap water Nutrition 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 235000013339 cereals Nutrition 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- GXDHCNNESPLIKD-UHFFFAOYSA-N 2-methylhexane Natural products CCCCC(C)C GXDHCNNESPLIKD-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 239000004342 Benzoyl peroxide Substances 0.000 description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 239000004310 lactic acid Substances 0.000 description 2
- 235000014655 lactic acid Nutrition 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 150000003335 secondary amines Chemical class 0.000 description 2
- 210000000582 semen Anatomy 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
- FRXSZNDVFUDTIR-UHFFFAOYSA-N 6-methoxy-1,2,3,4-tetrahydroquinoline Chemical compound N1CCCC2=CC(OC)=CC=C21 FRXSZNDVFUDTIR-UHFFFAOYSA-N 0.000 description 1
- NHDARDBWQBLLPL-UHFFFAOYSA-N CN(C)C.C=CC(OCC(CO)O)=O Chemical compound CN(C)C.C=CC(OCC(CO)O)=O NHDARDBWQBLLPL-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 159000000007 calcium salts Chemical group 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004737 colorimetric analysis Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 235000008504 concentrate Nutrition 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- UIWXSTHGICQLQT-UHFFFAOYSA-N ethenyl propanoate Chemical compound CCC(=O)OC=C UIWXSTHGICQLQT-UHFFFAOYSA-N 0.000 description 1
- 238000012262 fermentative production Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 238000004900 laundering Methods 0.000 description 1
- 235000012204 lemonade/lime carbonate Nutrition 0.000 description 1
- 238000000622 liquid--liquid extraction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000011020 pilot scale process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- 239000006188 syrup Substances 0.000 description 1
- 235000020357 syrup Nutrition 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/47—Separation; Purification; Stabilisation; Use of additives by solid-liquid treatment; by chemisorption
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
The present invention relates to a clean producing process for extracting citric acid from citric acid fermenting liquid, which relates to a method separating and purifying fermentation organic acid products. The present invention comprises the steps of synthesizing weak-acid and strong-alkali amphoteric resin which is exclusively used for absorbing and separating citric acid, and using a fixed bed containing the resin and continuous flow-staggered temperature-change chromatographic adsorption technology for separating and purifying pure citric acid products from fermenting liquid to obtain pure citric acid products. The citric acid is adsorbed from the fermenting liquid by the resin bed under low temperature, and hot water is used for desorbing the citric acid by saturating the resin bed. Heat quantity difference is used as eluting powder, and no acid, alkali or organic solvent chemical product is used. The present invention is the producing technology which has the advantages of reduced cost, high producing yield and no environmental pollution.
Description
Technical field
The present invention relates to a kind of from citric acid fermentation broth the process for cleanly preparing of free of contamination extraction citric acid, relate to fermentation organic acid product separation method of purification.It can be used in other fermentation organic acid products equally, purifies as the separation of oxysuccinic acid, lactic acid etc.
Background technology
China's citric acid production scale develop rapidly in recent years, annual production have reached 400,000 tons.Produce citric acid in the world and all adopt fermentation method, the mash after the fermentation contains various impurity, must take a series of physics and chemical process to carry out purification processes.The purifying technique that adopts in industry at present is a calcium salt precipitation method.This technology is owing to use a large amount of lime carbonate, sulfuric acid, so have a large amount of byproduct calcium sulfate waste residues, CO 2 waste gas and waste water produce, serious environment pollution, and complicated operating process, production cost height.
Though report is arranged, the novel method and the novel process of some extraction citric acids proposed, as ion exchange method, liquid-liquid extraction and liquid Membrane Separation Technique, membrane technique (comprising electrodialysis and reverse osmosis) and adsorptive separation technology.Qin Tao etc. have proposed employing strong alkali resin absorption citric acid, sulfuric acid desorption, alkali regenerating resin, concentrated, crystalline technology in CN 94113677.9.Gao Nianfa etc. have proposed weak base resin absorption citric acid in CN 96109807.4, the easy carbon compound of buffered soln wash-out, and alkali desorption citric acid, acidic resins absorption makes the transition, and pickling is taken off, acidic resins removal of impurities, basic resin removal of impurities, concentrated, crystalline technology.Though above method has solid slag calcium sulfate and produces, and all need use a large amount of acid, alkali, use almost and the acid of citric acid product equivalent and the alkali of same amount, and all enter environment.The inventor in the past few years studies hot regenerating resin performance and the application in citric acid is purified thereof always, once delivered " citric acid production The Study on New Technology " literary composition in 1997 the 3rd phases of " modern chemical industry " magazine, can think theoretical guide of the present invention, but also not be a complete concrete technical scheme that can industrial scale applications.
Summary of the invention
The purpose of this invention is to provide a kind of process for cleanly preparing that from citric acid fermentation broth, extracts citric acid.The inventive method technical problem to be solved is to make this technology become a kind of reducing cost, and improves and produces yield, particularly importantly can thoroughly eradicate the processing method of environmental pollution in the production process.
Its main technical schemes has comprised the synthetic weak acid strong base anion exchange amphoteric resin that is used for special fractionation by adsorption citric acid; And adopt the fixed bed that this resin is housed, and use continuous cross-flow temperature-induced displacement chromatography adsorption technology from fermented liquid, to separate purification, obtain pure citric acid product.
The weak acid strong base anion exchange amphoteric resin of the present invention's preparation, it is a kind of synthetic cross-linked network alternate copolymer, it is particle shape polymkeric substance with various different-grain diameters, use two or more to contain the monomer of mono-vinyl, be by having a kind of vinyl monomer with acidic-group at least with after vinylbenzene mixes, the gel-type or the macroporous type cross-linked network alternate copolymer that under the linking agent that contains polyene-based participates in, generate by the suspension copolymerization reaction.Carry out on the phenyl ring in the cross-linked network alternate copolymer again carrying out aminated reaction again after the chloromethyl alkalify, obtain the mainly anionite in the phenyl ring contraposition of tertiary amine, quaternary amine, polyamines basic group.
The chemical equation of typical case's thing is:
The vinyl monomer with acidic-group that participates in copolymerization in the amphoteric resin is a vinylformic acid
And/or acrylate
And/or vinyl acetate resin
And/or vinyl propionate fat
And/or vinyl pyridine
R ' is in the obvious typical thing
And/or
And/or
And/or
And/or
R is H or CH in the formula
3
The vinyl monomer total content (W/W) with acidic-group that participates in copolymerization in the amphoteric resin is 25%～70%, and the best is 30%～40%.
The styrene content (W/W) that participates in copolymerization in the amphoteric resin is 20%～50%, and the best is 25%～40%.
The polyene-based linking agent that participates in copolymerization in the amphoteric resin comprises divinylbenzene, triethylene benzene, two propylene benzene, methacrylic acid glycol ester, trimethylammonium vinylformic acid glyceryl ester, trimerization triallyl isocyanurate etc., its content (W/W) is 4%～25% in amphoteric resin, and the best is 6%～15%.
Described resin chloromethylation, the reactant and the catalyzer that use in aminated are: the monochloromethyl-ether that carries out the chloromethyl addition on can the phenyl ring in resin; Can carry out secondary amine, tertiary amine, the polyethylene polyamine of aminated reaction; All kinds of Fu Shi catalyzer such as zinc chloride, aluminum chloride, tin tetrachloride, applied all cpds, catalyzer and reaction method all were applicable to the present invention during general resin anion(R.A) was synthetic.
Among the present invention be with two or more monomer that contains mono-vinyl with carry out the suspension copolymerization reaction after the linking agent that contains polyene-based mixes, generate gel-type cross-linked network alternate copolymer.Can also in the suspension copolymerization reaction, add pore-creating agent, to generate macroporous type cross-linked network alternate copolymer, used pore-creating agent can be toluene, gasoline, kerosene, paraffin wax, lipid acid, or have a saturated alkane of 4～10 carbon atoms, above various pore-creating agents are mixed use also to be fine, its consumption is 10%～80% of a polymerization single polymerization monomer total amount (W/W), and the best is 30%～50%.
Resin of the present invention, especially macroporous resin have the physical stability higher than general commercial resin, and mill back rate of small round spheres＞99% is applicable to 100 ℃ of left and right sides prolonged operation temperature.This resin has very high adsorptive capacity to citric acid, and every gram resin has 0.8 gram at least, and the adsorptive capacity of 1.2 gram citric acids is generally arranged; Have 0.5 gram at least, the desorption quantity of 0.8 gram citric acid is generally arranged, thereby can get at least 10%, generally can reach 20%～35% high density citric acid desorption liquid.This resin can be used as the organic acid sorbent material, can be used in the separation of organic mixture.This resin also has catalytic performance, also can use as support of the catalyst simultaneously.
The present invention proposes a kind of from citric acid fermentation broth the continuous cross-flow temperature-induced displacement chromatography adsorption technology of pollution-free extraction citric acid, citric acid fermentation broth is at room temperature by being equipped with the fixed bed of this resin, citric acid is adsorbed on the resin, use the hot deionized water that is not less than 80 ℃ by having adsorbed the resin bed of citric acid, with the desorption citric acid then; Use a plurality of resin columns in the technology, each resin column is end to end with series system, forms a ring system to realize operate continuously; Citric acid fermentation broth is to cycle through each resin bed continuously with reflux type citric acid is adsorbed in the adsorption step of technology; Hot water is to circulate continuously in the mode with the citric acid fermentation broth cross-flow in the desorption, adsorbs saturated resin bed with the desorption citric acid by each citric acid.
The purifying technique route is: filtering fermentation liquor removes amphoteric resin absorption citric acid (fermented waste fluid returns the fermentor tank circulating fermentation) → high-temperature-hot-water desorption citric acid → concentrated, crystallization → citric acid crystalline product under thalline → room temperature.
Process unit flow process of the present invention as shown in the figure, 5～20 fixed bed columns that wherein load resin of the present invention, end to end with series system by various different pipelines and valve, form a ring system, to realize operate continuously.In each cyclical operation, comprised adsorption step, again adsorption step, heating steps, desorption and cooling evacuation step.
In adsorption step, citric acid fermentation broth at room temperature cycles through each resin bed continuously with reflux type, and citric acid is adsorbed; The concentration of citric acid fermentation broth is about 8%～15% when beginning, and concentration is higher than 1% citric acid solution and also may be used in this adsorption step naturally.From the effusive citric acid fermentation adsorption liquid of each resin bed, as residue citric acid concentration＞0.5% wherein, circulation is entered next resin bed adsorb in the adsorption step, order is carried out successively; As residue citric acid concentration＜0.5% wherein, can return fermentor tank and be used for circulation fermentation again, citric acid fermentation is had no disadvantageous effect, and can increase the citric acid acid production rate in the fermented liquid.Citric acid fermentation broth reaches saturated substantially by resin bed to resin bed continuously, the saturated of resin can be determined by refractive index of liquid or the citric acid concentration of measuring inflow and spouting bed, as flowing into and effusive refractive index of liquid or citric acid concentration reach equal substantially, think that then resin reaches capacity.
Before entering desorption, need in post, to feed deionized water or the citric acid solution that is not less than 80 ℃, in the resin bed chuck, use steam heating, and insulation made resin bed reach required desorption temperature more than at least 20 minutes.
In desorption, hot water is to cycle through each citric acid absorption saturated resin bed continuously with the desorption citric acid in the mode with citric acid fermentation broth absorption cross-flow, to guarantee that the column outlet place adsorbed citric acid of resin in the adsorption step obtains desorption more completely, this measure can increase the amount that remains citric acid concentration＜0.5% relief liquor in the adsorption step and reach (breakthrough point postponement) more than 25%.
The hot deionized water temperature that enters resin bed is 60～120 ℃, the best is 85～95 ℃, the resin bed chuck need be used steam insulation, vapor temperature is 80～140 ℃, the best is 95～105 ℃, vapor temperature is higher at least 5 ℃ than desorption liquid temperature in the resin bed in the requirement resin bed chuck, and the best is high 10～20 ℃, and this measure can improve citric acid and separate impurities effect well.
According to the desorption liquid elution order, can be divided into three cuts:
The amount of first cut is 0.5～2 bed volume, and the best is 1～1.5 bed volume.Certainly also can regulate according to the existence and the separation degree of impurity in the real attenuation liquid.The leading indicator of foreign matter content is easy carbon compound in the fermented liquid, the colorimetric analysis that measuring method uses in the time of can be with the easy carbon index of citric acid products measure among spectrophotometry or the American Pharmacopeia USP93.
The collecting amount of second cut is 1～3 bed volume, and the best is 1.5～2 bed volume; Certainly also can regulate according to the existence of impurity in the real attenuation liquid and separation degree and citric acid concentration.The leading indicator of foreign matter content is easy carbon compound in the fermented liquid, and the easy carbon compound clearance in general requirement second cut reaches more than 80%, preferably reaches more than 95%; Average citric acid concentration reaches more than 12% at least, generally reaches more than 18%, preferably can reach more than 22%.Second cut carries out condensing crystal, obtains the citric acid product.
All the other are the 3rd cut, and the circulation of the 3rd cut is used for the desorption of next citric acid absorption saturated column to improve the concentration of next post desorption liquid citric acid.Its collecting amount can be regulated according to next post desorption result, but generally should make final desorption concentration＜3%, best＜1.5%.
Again adsorption step be after adsorption step and desorption before.Resin is after saturated by citric acid absorption in adsorption step, again with first cut of gained in the desorption and second cut carry out behind the condensing crystal mother liquid obtained mixed solution be adsorbed to once more saturated, with the citric acid adsorptive capacity of raising resin.The general citric acid content of first cut is 20%～30%, the general citric acid content of the second cut mother liquor is more than 80%, after this two liquid mixing, being adjusted to citric acid content with distilled water diluting is more than 20%, be used for adsorbing again, be preferably citric acid content 20%～25%, concentration is higher than each citric acid solution of 15% and may be used to this naturally again in the adsorption step.This again adsorption step proceed to resin bed and reach once more saturated, measure that resin bed flows into and the refractive index or the citric acid concentration of effluent liquid, reach equal as both, think that then resin reaches once more saturated.This again adsorption step also can adopt the method for a certain amount of above-mentioned mixed solution of each adding, adsorbing usage quantity again can determine according to the actual device size, principle be in the desorption that produces institute's cut of winning and second cut concentrates, mother liquid obtained after the crystallization, and adsorb consumption again and reach balance.
In adsorption process, resin can produce 15%～20% expansion, so resin can not all be filled in the post, need reserve certain expansion space.And in desorption process, the come-up because resin lightens can produce the bed internal pore in this process, makes citric acid and the bigger reduction of separate impurities effect.Therefore install all kinds of weights of regulating the control height in each resin bed column top additional,, can not produce the bed space, influence the adsorption desorption separating effect because of the change of resin volume to guarantee in the adsorption desorption process.This type of weight that can regulate the control height can have various spaces, plays the effect of feed liquid sparger simultaneously, with effective separating effect that improves adsorption desorption.
The present invention be applicable to useful suitable microorganism such as aspergillus niger (Aspergillus Niger); Fermentable carbohydrates is produced citric acid as purifying in the fermented liquid of gained such as sweet potato, cassava, corn, molasses.Present method also can be used in other fermentation organic acid products, purifies as the separation of oxysuccinic acid, lactic acid.
Advantage of the present invention is
1. realize cleaning production
A. use the heat difference as wash-out power in the purifying technique process, need not to use any stone flour, acid, alkali chemical;
B. waste gas waste residues such as carbonic acid gas, calcium sulfate, gac have been eliminated;
C. useless syrup circulating fermentation improves citric acid yield, reduces by 90% discharge of wastewater.
2. make in the citric acid fermentation broth citric acid obtain purifying, remove wherein contained inorganic salt, easily 85～99% of carbon compound and organic heteroacid (as oxalic acid), citric acid yield (the fermentation filtered liquid is before condensing crystal) is greater than 98%.
3. shortening production technique is saved production site, reduces operator.
4. can realize full-automatic production operation continuously.
5. citric acid product per ton can reduce production costs more than 1000 yuan.
Use the present invention at present and realized 200 tons/year pilot scale, according to existing achievement measuring and calculating, of the present invention applying has great economic and social benefit.To play bigger prograding to China's biochemical industry development.
Description of drawings
Process unit flow process of the present invention as shown in the figure.5～20 fixed bed columns that wherein load resin of the present invention, end to end with series system by various pipeline and valve, note: n among the figure
#Post and 1
#Post joins, and forms a ring system, to realize operate continuously.
Embodiment
Various variations and modification under inventive concept instructs are applicable to that all the present invention protects.Below provide detailed example with further instruction and description.
Example 1 oil phase A
Vinylbenzene 40 grams; Vinylformic acid 50 grams; Divinylbenzene 15 grams (82%);
Isoheptane 45 grams; Benzoyl peroxide 1 gram aqueous phase B
Water 180 grams; Sodium-chlor 40 grams; Xylo-Mucine 0.3 gram; 15 of 1% methylene blues
Under agitation slowly oil phase A is joined in the aqueous phase B, regulate stirring velocity forms required size at aqueous phase to oil phase drop.Slowly be warmed up to 75-80 ℃ then, insulation reaction down.5 hours after-filtration and thorough washing product, 100 ℃ of following vacuum-dryings, product 98 grams, productive rate 93.3%.
Products therefrom is that taupe brown rounded grain shape has anion-exchange capacity 3.8 milligramequivalents/gram dried resin.
Example 2
Gained resin in the example 1 is quaternary ammoniated: 10 gram products add in the mixing solutions of 8 milliliters of ethylene dichloride and 10 milliliters of chloromethyl ethers, are incubated down at 30 ℃ and soak 3 hours; Be cooled to about 25 ℃, add 8 gram zinc chloride, be warming up to 45 ℃ of insulations; Reduce to room temperature after 8 hours, filter out mother liquor, massive laundering air-dry a few hours to the pH=2-3; Add 15 milliliters of acetone, controlled temperature adds 20 milliliters of trimethylamine aqueous solutions to pH=11 below 40 ℃ under stirring then, and 30 ℃ are incubated 6 hours down; Reaction finish to be filtered, be washed to after the neutrality product 122 grams.
Products therefrom is that dark-brown rounded grain shape has anion-exchange capacity 4.9 milligramequivalents/gram dried resin.
Example 3 oil phase A
Vinylbenzene 40 grams; Vinyl-acetic ester 50 grams; Divinylbenzene 15 grams (82%);
Benzoyl peroxide 1 gram aqueous phase B
Water 150 grams; Sodium-chlor 30 grams; Xylo-Mucine 0.25 gram; 10 of 1% methylene blues
Synthesis condition such as example 1, product productive rate are 95.3%.
Products therefrom is that canescence rounded grain shape has anion-exchange capacity 4.3 milligramequivalents/gram dried resin.
Example 4
Repeating the synthetic method of example 1, example 2, example 3, only is composition and the content that has changed wherein each vinyl monomer.Products obtained therefrom result such as following table are listed:
The absorption of the various resins of table 1 and the crosslinked aminated loading capacity desorb capacity of desorb citric acid capacity sequence number propylene acetate ethylbenzene ethene
Acid % alkene ester % % agent % mg/g dried resin mg/g dried resin 1 10 30 40 20 secondary amine 823 5,432 10 30 40 20 tertiary amines 1,348 10,253 20 30 30 20 tertiary amines 1,262 9,874 15 45 25 15 tertiary amines 978 8,705 15 45 25 15 polyethylene polyamines 956 6,346 10 35 35 20 tertiary amines 1,150 964
The absorption of example 5 various resins and desorb capacity
Loading capacity is reached by various process number wheel absorption and desorb and inhales the resin that takes off after stablizing, clean with deionized water in ion exchange column with the flow wash-out of 3 bed volumes per hour, after 80 ℃ of following vacuum-drying, the dried resin of testing is in sieving to 30-60 order scope, accurately in water, soak 24h behind the weighing 3g, filter back centrifuge dehydration 5min under 2000 ± 200rm/min speed, place thermostatic bath, 25 ℃ of constant temperature, adding 50ml concentration is 12% citric acid solution vibration 1h (the 0.5h resin that normally vibrates can reach saturated); Take out resin centrifugal exsolution liquid 5min under 2000 ± 200rm/min speed, merge measured in solution and wherein remain citric acid concentration, to calculate resin absorption citric acid capacity.The concentration of citric acid solution is accurately measured by using 0.1N NaOH titration phenolphthalein to reach terminal point.
The desorb capacity reaches saturated resin by above various absorption 12% citric acid solutions, 90 ℃ of constant temperature, places thermostatic bath to add 100ml ionized water vibration 1h; Take out resin centrifugal exsolution liquid 5min under 2000 ± 200rm/min speed, merge wherein citric acid concentration of measured in solution, to calculate resin desorb citric acid capacity.
The absorption of the various resins of table 2 and desorb citric acid capacity
Resin absorption capacity desorb capacity
(mg/g dried resin) (mg/g dried resin)
FE41-1 1348 1025
FE41-2 823 543
FE41-3 1262 987
FE41-4 978 870
FE41-5 956 634
FE41-6 1150 964
Experimental result is as shown in table 2.The result proves that resin of the present invention has very high absorption and hot water desorb capacity to citric acid.
The test of example 6 citric acid fermentation broth purifying techniques
10 2500 * 400ID. absorption exchange columns are connected into annular enclosed system with diagramatic way, add the FE41-2 resin 700Kg in the table 2, being added with a weight at each resin bed top is the liquid distributor that 20Kg could regulate and control height.Successively with concentration be 12.42% citric acid fermentation broth and concentration be in 17.65% the desorption the mixed solution of the cut of winning and mother liquor extremely saturated, the adsorption desorption flow velocity all is 600L/H, the hot water temperature and the resin bed jacket temperature that enter resin bed in the desorption are 95 ℃, and the sampling amount of first cut and second cut is 300L.Vacuum concentration is carried out in the sampling of second cut, crystallization, the qualified product percent crystallization in massecuite can reach 83%.
This evidence the present invention have very high commerce, environmental protection and technological value.
The test of example 7 desorption temperatures
As example 6, successively with concentration be 12.42% citric acid fermentation broth and concentration be in 17.65% the desorption the mixed solution of the cut of winning and mother liquor to saturated absorption exchange column, carry out different desorption temperatures tests.
When the hot water temperature who enters resin bed and resin bed jacket temperature were 95 ℃, the gained second cut mean concns was 16.65%, easily carbon removal rate 87.65%.
The hot water temperature who enters resin bed is 95 ℃, and when the resin bed jacket temperature was 105 ℃, the gained second cut mean concns was 16.90%, easily carbon removal rate 93.43%.
In this test,, proved that this measure can well improve citric acid and separate impurities effect with desorption liquid temperature in different resin bed chucks and the resin bed.
Example 8 absorption liquid effluents are used for fermentation test again
The absorption liquid effluent of getting citric acid concentration＜0.5% in the adsorption step substitutes fermentation batching water, is used for the shake flask test of fermentative production:
1, uses bacterial classification, AN, numbering S-95-1.
2, fermentation raw material, Semen Maydis powder, Tapioca Starch.
3, the shaking table cycle, 72 hours.
4, prescription, Semen Maydis powder 15% (2.5 gram), Tapioca Starch 85% (13.5 gram).
5, concentration, 16%.
Table 3 uses different batching water by fermentation to shake bottle result's contrast
| Tap water ml | ＜0.5% absorption liquid effluent ml | Produce sour % | Tap water ml | ＜0.5% absorption liquid effluent ml | Produce sour % | ||
| 84 | --- | 11.8 | 11.9 | 84 | 14.8 | 14.93 | |
| 84 | --- | 12.0 | 84 | 15.1 | |||
| 63 | 21 | 13.9 | 13.9 | 84 | 15.1 | ||
| 63 | 21 | 13.9 | 84 | 14.7 | |||
| 42 | 42 | 13.1 | 13.95 | 84 | 15.4 | ||
| 42 | 42 | 14.8 | 84 | 15.3 | |||
| Tap water ml | ＜0.5% absorption liquid effluent ml | Produce sour % | Tap water ml | ＜0.5% absorption liquid effluent ml | Produce sour % | ||
| 21 | 63 | 13.7 | 14.25 | 84 | 14.7 | 15.3 | |
| 21 | 63 | 14.8 | 84 | 15.9 | |||
| --- | 84 | 13.4 | 14.1 | 84 | 15.5 | ||
| --- | 84 | 14.8 | 84 | 14.9 | |||
Above testing data proves＜0.5% absorption liquid effluent can substitute fermentation batching water fully, be back to circulation and ferment.
Claims (10)
1. one kind is extracted methods of citric acid from citric acid fermentation broth, it is characterized in that comprising the synthetic weak acid that is used for special fractionation by adsorption citric acid, strong base anion exchange amphoteric resin, and adopt the fixed bed that this resin is housed to use continuous cross-flow temperature-induced displacement chromatography adsorption technology, from fermented liquid, separate and purify, obtain pure citric acid product
A. weak acid strong base anion exchange amphoteric resin is a kind of synthetic cross-linked network alternate copolymer, use two or more to contain the monomer of mono-vinyl, be by having a kind of vinyl monomer with acidic-group at least after mixed with vinylbenzene, under participating in, the linking agent that contains polyene-based reacts the gel of generation or macroporous type cross-linked network alternate copolymer by suspension copolymerization; Carry out on the phenyl ring in the cross-linked network alternate copolymer carrying out aminated reaction again behind the chloromethylation again, obtain the mainly anionite in the phenyl ring contraposition of tertiary amine, quaternary amine, polyamines basic group, alternate copolymer typical case thing structural formula is:
R ' is
And/or
And/or
And/or
And/or
R is H or CH
3
B. continuous cross-flow temperature-induced displacement chromatography adsorption technology: at room temperature by the fixed bed of this resin is housed, citric acid is adsorbed on the resin citric acid fermentation broth, uses the hot deionized water that is not less than 80 ℃ by having adsorbed the resin bed of citric acid, with the desorption citric acid then; Use a plurality of resin columns in the technology, each resin column is end to end with series system, forms a ring system to realize operate continuously; Citric acid fermentation broth is to cycle through each resin bed continuously with reflux type citric acid is adsorbed in the adsorption step of technology; Hot water is to cycle through each citric acid absorption saturated resin bed continuously with the desorption citric acid in the mode with the citric acid fermentation broth cross-flow in the desorption.
2. the method for claim 1 is characterized in that the acidic-group vinyl monomer that has of participation copolymerization in the described amphoteric resin is vinylformic acid and/or acrylate and/or vinyl-acetic ester and/or propionate and/or vinyl pyridine; The vinyl monomer total amount (W/W) that has acidic-group in the amphoteric resin is 25～70%; The styrene content (W/W) that participates in copolymerization in the amphoteric resin is 20%～50%; The polyene-based linking agent that participates in copolymerization in the amphoteric resin comprises divinylbenzene, triethylene benzene, two propylene benzene, methacrylic acid glycol ester, trimethylammonium vinylformic acid glyceride, trimerization triallyl isocyanurate,
Its content (W/W) is 4%～25% in the amphoteric resin.
3. the method for claim 1 is characterized in that described resin chloromethylation, aminated in employed reactant and catalyzer be: the monochloromethyl-ether that carries out the chloromethyl addition on can the phenyl ring in resin; Can carry out secondary amine, tertiary amine, the polyethylene polyamine of aminated reaction; Zinc chloride, aluminum chloride, tin tetrachloride.
4. the method for claim 1, it is characterized in that in the suspension copolymerization reaction, adding pore-creating agent, to generate macroporous type cross-linked network alternate copolymer, used pore-creating agent can be toluene, gasoline, kerosene, paraffin wax, lipid acid, or have a saturated alkane of 4～10 carbon atoms, above various pore-creating agents are mixed use also be fine, its consumption is 10%～80% of a polymerization single polymerization monomer total amount (W/W).
5. the method for claim 1 is characterized in that described resin, has very high physical stability, and mill back rate of small round spheres＞99% is applicable to the prolonged operation temperature about 100 ℃; This resin has adsorption to citric acid, and every gram resin has the adsorptive capacity of 0.8 gram-1.2 gram citric acids; The desorption quantity of 0.5 gram-0.8 gram citric acid is arranged, thereby can get the high density citric acid adsorption liquid of 10%-35%.
6. the method for claim 1 is characterized in that described adsorption step at room temperature carries out, from the effusive citric acid fermentation adsorption liquid of each resin bed, as residue citric acid concentration＞0.5% wherein, circulation is entered next resin bed, adsorb, order is carried out successively; As residue citric acid concentration＜0.5% wherein, can return fermentor tank and be used for circulation fermentation again.
7. the method for claim 1, the hot deionized water temperature that it is characterized in that entering in the described desorption resin bed is 60～120 ℃, the resin bed chuck need be used steam insulation, vapor temperature is 80～140 ℃, according to the desorption liquid elution order, can be divided into three cuts: the amount of first cut is 0.5～2 bed volume, and the amount of second cut is 1～3 bed volume, and all the other are the 3rd cut.
8. method as claimed in claim 7, three cuts that it is characterized in that gained in the described desorption, second cut carries out condensing crystal, obtains the citric acid product, and the circulation of the 3rd cut is used for the desorption of next citric acid absorption saturated column to improve the concentration of next post desorption liquid citric acid; Resin is after saturated by citric acid absorption in adsorption step, again with first cut of gained in the desorption and second cut carry out behind the condensing crystal mother liquid obtained mixed solution be adsorbed to once more saturated, with the citric acid adsorptive capacity of raising resin.
9. the method for claim 1, it is characterized in that 5～20 resin columns of described process using, each resin bed column top installs all kinds of weights of regulating the control height additional, to guarantee that resin is in the adsorption desorption process, can not produce the bed space because of the change of resin volume, influence the separating effect of adsorption desorption, this weight that can regulate the control height has various spaces, plays the feed liquid sparger simultaneously.
10. the method for claim 1 is characterized in that being applicable to suitable microorganism aspergillus niger Aspergillus Niger; Fermentable carbohydrates, sweet potato, cassava, corn, molasses are purified in the citric acid fermentation broth of gained and are produced citric acid.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011380187A CN1141289C (en) | 2001-12-19 | 2001-12-19 | Clean productive process for extracting citric acid from citric acid fermentation liquid |
| AU2002306265A AU2002306265A1 (en) | 2001-12-19 | 2002-05-20 | Weak acid strong base amphoteric adsorptive resins and the process of separation and purification of citric acid |
| PCT/CN2002/000336 WO2003051808A1 (en) | 2001-12-19 | 2002-05-20 | Weak acid strong base amphoteric adsorptive resins and the process of separation and purification of citric acid |
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|---|---|---|---|
| CNB011380187A CN1141289C (en) | 2001-12-19 | 2001-12-19 | Clean productive process for extracting citric acid from citric acid fermentation liquid |
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| CN1141289C true CN1141289C (en) | 2004-03-10 |
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| CN100339351C (en) * | 2005-08-26 | 2007-09-26 | 江南大学 | Method for separating remaining sugar and extracting organic acid from organic acid fermentation liquor and corresponding organic acid mother liquor |
| FR2953831B1 (en) * | 2009-12-16 | 2012-03-09 | Inst Francais Du Petrole | PROCESS FOR THE PRODUCTION OF ALKYL ESTERS FROM VEGETABLE OR ANIMAL OIL AND ALIPHATIC MONOALCOOL WITH HOT PURIFICATION IN FIXED BED. |
| CN102249897A (en) * | 2011-05-10 | 2011-11-23 | 安徽丰原生物化学股份有限公司 | Processing method of citric acid mother solution |
| CN103695319B (en) * | 2013-12-23 | 2016-02-17 | 安徽丰原发酵技术工程研究有限公司 | A kind ofly produce the bacterial strain of citric acid and the method for preparation of citric acid by fermentation thereof |
| CN105749584B (en) * | 2014-12-15 | 2017-11-07 | 中粮集团有限公司 | A kind of method of Simulation moving bed separate substance |
| WO2017095685A1 (en) * | 2015-12-01 | 2017-06-08 | Dow Global Technologies Llc | Chromatographic separation of propionic acid using strong base anion exchange resin |
| CN110958906B (en) * | 2017-06-22 | 2022-04-05 | 阿彻丹尼尔斯米德兰德公司 | Process for separating and purifying mixtures containing dicarboxylic acids |
| CN109053430A (en) * | 2018-08-30 | 2018-12-21 | 河北乐开节能科技股份有限公司 | A method of efficiently separating heteroacid in citric acid |
| CN110317297A (en) * | 2019-07-17 | 2019-10-11 | 河北利江生物科技有限公司 | The preparation method of vinylpyridine amphoteric resin |
| CN112552164B (en) * | 2020-12-08 | 2022-12-09 | 日照金禾博源生化有限公司 | Process method for extracting malic acid from unqualified sodium citrate mother liquor |
| CN113527757B (en) * | 2021-07-26 | 2022-11-04 | 江南大学 | A nitrogen-containing heterocyclic amphoteric resin and its application in adsorption and separation of small molecular organic acids |
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| CN1035000C (en) * | 1994-11-04 | 1997-05-28 | 秦涛 | Method for extracting citric acid from citric acid fermentation broth |
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