CN1033194A - The process for purification of lactic acid produced by fermentation of corn - Google Patents
The process for purification of lactic acid produced by fermentation of corn Download PDFInfo
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- CN1033194A CN1033194A CN 87101404 CN87101404A CN1033194A CN 1033194 A CN1033194 A CN 1033194A CN 87101404 CN87101404 CN 87101404 CN 87101404 A CN87101404 A CN 87101404A CN 1033194 A CN1033194 A CN 1033194A
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- China
- Prior art keywords
- lactic acid
- corn
- fermentation
- purification
- acid produced
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- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 238000000855 fermentation Methods 0.000 title claims abstract description 31
- 230000004151 fermentation Effects 0.000 title claims abstract description 31
- 239000004310 lactic acid Substances 0.000 title claims abstract description 28
- 235000014655 lactic acid Nutrition 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 28
- 240000008042 Zea mays Species 0.000 title claims abstract description 27
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 title claims abstract description 27
- 235000002017 Zea mays subsp mays Nutrition 0.000 title claims abstract description 27
- 235000005822 corn Nutrition 0.000 title claims abstract description 27
- 238000000746 purification Methods 0.000 title claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 21
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims abstract description 16
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910001629 magnesium chloride Inorganic materials 0.000 claims abstract description 8
- 239000000292 calcium oxide Substances 0.000 claims abstract description 7
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 7
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims abstract description 6
- 235000011130 ammonium sulphate Nutrition 0.000 claims abstract description 6
- 230000003311 flocculating effect Effects 0.000 claims abstract description 6
- 238000005649 metathesis reaction Methods 0.000 claims abstract description 6
- 150000004683 dihydrates Chemical class 0.000 claims abstract description 5
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 5
- 239000010440 gypsum Substances 0.000 claims abstract description 5
- 238000004061 bleaching Methods 0.000 claims abstract description 4
- 238000005342 ion exchange Methods 0.000 claims description 5
- 238000007670 refining Methods 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 2
- 230000008020 evaporation Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 238000000967 suction filtration Methods 0.000 claims description 2
- 239000006210 lotion Substances 0.000 claims 1
- 238000012423 maintenance Methods 0.000 claims 1
- 102000004169 proteins and genes Human genes 0.000 abstract description 9
- 108090000623 proteins and genes Proteins 0.000 abstract description 9
- 235000000346 sugar Nutrition 0.000 abstract description 8
- 239000004519 grease Substances 0.000 abstract description 7
- 239000003795 chemical substances by application Substances 0.000 abstract description 6
- 230000001627 detrimental effect Effects 0.000 abstract description 3
- 238000002425 crystallisation Methods 0.000 description 8
- 230000008025 crystallization Effects 0.000 description 7
- MKJXYGKVIBWPFZ-UHFFFAOYSA-L calcium lactate Chemical compound [Ca+2].CC(O)C([O-])=O.CC(O)C([O-])=O MKJXYGKVIBWPFZ-UHFFFAOYSA-L 0.000 description 4
- 239000001527 calcium lactate Substances 0.000 description 4
- 235000011086 calcium lactate Nutrition 0.000 description 4
- 229960002401 calcium lactate Drugs 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000005341 cation exchange Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000003828 vacuum filtration Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 238000005349 anion exchange Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012262 fermentative production Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000000247 postprecipitation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- AVGNPRGFSOKIKO-UHFFFAOYSA-K trimagnesium trichloride Chemical compound [Cl-].[Mg+2].[Cl-].[Mg+2].[Cl-].[Mg+2] AVGNPRGFSOKIKO-UHFFFAOYSA-K 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Abstract
The present invention is a kind of process for purification with settlement separate lactic acid produced by fermentation of corn for main purification means.Corn fermentation liquid maintains 90 to 100 ℃, by add unslaked lime and protein settling agent magnesium chloride or dihydrate gypsum or ammonium sulfate in fermented liquid, uses the filter residue of metathesis and bleaching process to make flocculating aids, filters.Can eliminate detrimental impurity-protein, grease and remaining reducing sugar in the lactic acid produced by fermentation of corn treating process effectively.
Description
The invention belongs to fermentative Production lactic acid field.Say so in more detail and belong to the process for purification of lactic acid produced by fermentation of corn.
Till now, the process for purification of lactic acid produced by fermentation of corn, generally adopting with the calcium lactate crystallization and purification is the process for purification of main purification means.Owing to contain impurity such as more protein, grease and remaining reducing sugar in the corn lactic acid fermentation liquid, in crystallisation process, these impurity also double team among crystallization, add that the calcium lactate crystals solubility is bigger, caused the disadvantage that refining effect is poor, the operating time is long, material loss is serious, yield is low.
Purpose of the present invention, study a kind of method that can remove detrimental impurity in the corn fermentation liquid-high-load protein, grease and remaining reducing sugar exactly, make the present invention become that a kind of refining effect is good, the operating time is short, loss of material is few, the process for purification of the lactic acid produced by fermentation of corn that yield is high.
In order to realize purpose of the present invention, the present invention has adopted settlement separate purification to replace the process for purification of calcium lactate crystallization and purification.Under 90-100 ℃, the unslaked lime that adds capacity in the lactic acid fermentation clear liquid that filter press comes out comes out the fully saponified postprecipitation of grease, adds protein settling agent magnesium chloride or ammonium sulfate or dihydrate gypsum, make protein condense from fermented liquid, remaining reducing sugar is also along with settling down; Having adopted the filter residue in replacement(metathesis)reaction and the bleaching process is that flocculating aids carries out vacuum filtration, and sediment is separated with fermentation clear liquid.Adopt settlement separate purification of the present invention, can remove three kinds of detrimental impurity-high content of protein matter, grease and residual sugars in the corn lactic acid fermentation liquid.
Below in conjunction with accompanying drawing the present invention is described in further detail:
Fig. 1 has represented the feel flow draw of block of the refining whole process of lactic acid produced by fermentation of corn.
Fig. 2 represents the settlement separate purifying technique schema of corn lactic acid fermentation liquid of the present invention:
With reference to Fig. 1, concentrate the process for purification that concentrates the lactic acid produced by fermentation of corn that forms with operations such as decolouring (7), finished product packings (8) with decolouring (5), ion-exchange (6), finished product by plate compression (1), sedimentation separation (2), evaporation enrichment (3), double decomposition and decolouring (4), semi-finished product.
With reference to Fig. 2, the sedimentation separation flow chart of the corn lactic fermentation liquid that is formed by retort (9), vacuumfilter (10), collecting tank (11) and storage tank (12). It is 0.5 to 25m that corn lactic acid fermentation clear liquid behind plate compression metering ground is added volume3Retort (9) in, stir lower logical Steam Heating, the temperature of keeping zymotic fluid is 90 to 100 ℃, in retort (9), adds quick lime, addition is counted 0.1～0.6% of corn lactic acid fermentation clear liquid weight with CaO; After 10 to 50 minutes, add the protein settling agent, it is different and different that the addition of protein settling agent is looked its kind; The solid magnesium chloride is with MgCl2·6H
2O counts 0.2 to 0.8% of corn lactic acid fermentation clear liquid weight; Dihydrate gypsum is with CaSO4·2H
2O counts 0.4 to 1.2% of corn lactic acid fermentation clear liquid weight, and ammonium sulfate is 0.2 to 1.0%; After stirring corn lactic fermentation liquid certain hour, left standstill 4 to 12 hours, in vacuumfilter (10), (Main Ingredients and Appearance is calcium sulfate and active carbon to the filter residue that (internal diameter of nutsch filter be 0.5 to 1.0M) produces with double decomposition and bleaching process (4),) make filter aid, carry out while hot vacuum filtration, filtrate is put into storage tank (12) through collecting tank (11), in storage tank (12) In, be 8 to 10 with lime slurry neutralization to pH after, by block diagram shown in Figure 1 according to the method for routine evaporate, decolouring, double decomposition, concentrate, the operation food prepared therefrom level lactic acid such as ion-exchange.
Embodiment 123456
Fermented liquid throws 0.45 0.45 0.45 0.50 15.8 19.2
Go into the amount ton
Calcium lactate contains 11.0 10.8 11.0 12.0 10.0 11.14
Amount wt%
Residual sugar content 0.42 0.44 0.44 0.44 0.38 0.41
wt%
Precipitation reaction 93 93 96 93 96 92
Temperature t ℃
CaO consumption 0.5 0.4 0.4 0.3 0.3 0.3
wt%
Sinking agent ammonium sulfate plaster stone plaster stone magnesium chloride magnesium chloride magnesium chloride
Sinking agent is with 0.3 1.0 0.7 0.5 0.4 0.3
Amount wt%
Settling time 10 10 879 10
Hour
Flocculating aids thick 25 25 35 10 36 27
The degree centimetre
Filtrate total nitrogen≤0.01≤0.01≤0.01≤0.01≤0.01≤0.01
Amount wt%
The filtrate residual sugar can't check
Amount wt%
The filtrate grease can't check
Content wt%
From embodiment 1～6, can find out, by method of the present invention, can remove protein, grease and the remaining reduced sugar of the objectionable impurities-high-load in the corn lactic fermentation liquid. The present invention compares with the technology of old crystallization and purification, have these advantages: (1) technological process is simplified, production cycle shortens, the metathesis reaction product easily filters, suction filtration speed is fast, ion-exchange process only needs just can to reach regulator cleanup standards through a cation exchange and an anion exchange, is that the old process for refining led lacks and uses the cation exchange operation one time than crystallization. (2) reduce material loss, yield significantly improves, and compares with old technology, and yield can improve 10～20%. (2) improved working condition, eliminated wastewater pollution source, take crystallization as main old process using a large amount of crystallizers, floor space is big, the mother liquor and the cleaning solution contaminated environment that run off, technology of the present invention has been cancelled the crystallization purification process, has improved working condition, the environmental pollution of having avoided material loss to cause.
Claims (4)
1, a kind of process for purification with lactic acid produced by fermentation of corn comprising evaporation, metathesis, decolouring, ion-exchange process, is characterized in that:
A, intensification, the temperature maintenance that makes the corn lactic acid fermentation clear liquid in the retort [10] is at 90 to 100 ℃.
B, add unslaked lime in retort [10], the add-on of unslaked lime is 0.1 to 0.6% (weight)
C, in retort [10], add magnesium chloride or dihydrate gypsum or ammonium sulfate.
D, leave standstill through the lactic acid fermentation clear liquid after a, b, the c step 4 to 12 hours.
E, in vacuumfilter [11] by the settlement separate lactic acid fermentation clear liquid of flocculating aids suction filtration.
F, the lactic acid fermentation clear liquid after the e step by known method evaporate, metathesis, the refining said corn lactic acid lotion clear liquid of ion-exchange process.
2,, it is characterized in that said magnesium chloride is solid magnesium chloride (MgCl according to the process for purification of said lactic acid produced by fermentation of corn among claim 1, the c
26H
2O) add-on of magnesium chloride is 0.2 to 0.8%(weight), dihydrate gypsum (CaSO
42H
2O) add-on is 0.4 to 1.2%(weight), the add-on of ammonium sulfate is 0.2 to 1.0%(weight).
3,, it is characterized in that said flocculating aids is the filter residue in metathesis and the bleaching process according to the process for purification of said lactic acid produced by fermentation of corn among the claim 1e.
4, according to the process for purification of said lactic acid produced by fermentation of corn in the claim 3, the thickness that it is characterized in that said flocculating aids is 10 to 36 centimetres.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87101404 CN1033194A (en) | 1987-11-16 | 1987-11-16 | The process for purification of lactic acid produced by fermentation of corn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87101404 CN1033194A (en) | 1987-11-16 | 1987-11-16 | The process for purification of lactic acid produced by fermentation of corn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1033194A true CN1033194A (en) | 1989-05-31 |
Family
ID=4813394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87101404 Pending CN1033194A (en) | 1987-11-16 | 1987-11-16 | The process for purification of lactic acid produced by fermentation of corn |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1033194A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293033C (en) * | 1999-10-12 | 2007-01-03 | 普拉克生化公司 | Continuous process for preparing lactic acid |
-
1987
- 1987-11-16 CN CN 87101404 patent/CN1033194A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293033C (en) * | 1999-10-12 | 2007-01-03 | 普拉克生化公司 | Continuous process for preparing lactic acid |
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| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| RJ01 | Rejection of invention patent application after publication |