LT5680B - LIQUID MAGNESIUM NITRATE FERTILIZERS AND THEIR RECEIVING METHOD - Google Patents
LIQUID MAGNESIUM NITRATE FERTILIZERS AND THEIR RECEIVING METHOD Download PDFInfo
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- LT5680B LT5680B LT2008064A LT2008064A LT5680B LT 5680 B LT5680 B LT 5680B LT 2008064 A LT2008064 A LT 2008064A LT 2008064 A LT2008064 A LT 2008064A LT 5680 B LT5680 B LT 5680B
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- magnesium nitrate
- fertilizer
- magnesite
- magnesium
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- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 title claims abstract description 115
- 239000003337 fertilizer Substances 0.000 title claims abstract description 65
- 239000007788 liquid Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims description 8
- 239000001095 magnesium carbonate Substances 0.000 claims abstract description 30
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims abstract description 30
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims abstract description 28
- 235000014380 magnesium carbonate Nutrition 0.000 claims abstract description 28
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 20
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 19
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 18
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000013049 sediment Substances 0.000 claims abstract description 13
- 239000011777 magnesium Substances 0.000 claims abstract description 12
- 239000011541 reaction mixture Substances 0.000 claims abstract description 12
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 11
- 239000003501 hydroponics Substances 0.000 claims abstract description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 9
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 25
- 239000007864 aqueous solution Substances 0.000 claims description 13
- 239000002002 slurry Substances 0.000 claims description 7
- 239000002244 precipitate Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 4
- 230000003472 neutralizing effect Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 2
- 235000021049 nutrient content Nutrition 0.000 claims description 2
- 239000003518 caustics Substances 0.000 claims 1
- 230000029087 digestion Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 239000000203 mixture Substances 0.000 abstract description 11
- 238000001914 filtration Methods 0.000 abstract description 10
- 230000002262 irrigation Effects 0.000 abstract description 10
- 238000003973 irrigation Methods 0.000 abstract description 10
- 239000000725 suspension Substances 0.000 abstract description 10
- 230000004720 fertilization Effects 0.000 abstract description 4
- 235000015097 nutrients Nutrition 0.000 abstract description 3
- 238000010908 decantation Methods 0.000 abstract description 2
- 241000196324 Embryophyta Species 0.000 description 10
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- 239000007900 aqueous suspension Substances 0.000 description 4
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Diphosphoinositol tetrakisphosphate Chemical compound OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 239000000347 magnesium hydroxide Substances 0.000 description 2
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 2
- 230000029553 photosynthesis Effects 0.000 description 2
- 238000010672 photosynthesis Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 102000011931 Nucleoproteins Human genes 0.000 description 1
- 108010061100 Nucleoproteins Proteins 0.000 description 1
- 240000000111 Saccharum officinarum Species 0.000 description 1
- 235000007201 Saccharum officinarum Nutrition 0.000 description 1
- 244000082988 Secale cereale Species 0.000 description 1
- 244000061456 Solanum tuberosum Species 0.000 description 1
- 235000002595 Solanum tuberosum Nutrition 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 159000000009 barium salts Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 229930002875 chlorophyll Natural products 0.000 description 1
- 235000019804 chlorophyll Nutrition 0.000 description 1
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical group C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 description 1
- 210000003763 chloroplast Anatomy 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000002198 insoluble material Substances 0.000 description 1
- 150000002681 magnesium compounds Chemical class 0.000 description 1
- 229910001607 magnesium mineral Inorganic materials 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000003018 phosphorus compounds Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 235000012015 potatoes Nutrition 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000000699 topical effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
Landscapes
- Fertilizers (AREA)
Abstract
Išradimas priklauso skystųjų trąšų gamybos sričiai ir gali būti panaudotas trąšų pramonėje gaminant skystąsias magnio nitrato trąšas. Išradimo esmė: dviejų rūšių skystosios magnio nitrato trąšos gautos paprastesniu būdu iš mažesnės koncentracijos (32 - 40)% azoto rūgšties vandeninio tirpalo ir magnezito, jį skaidant žemesnėje temperatūroje, kuriose yra didesnė (nuo 36,2 % iki 41,5 %) koncentracija magnio nitrato, o jų maisto medžiagų augalams sudėtis yra (6,85 - 7,85) % azoto ir (9,79 - 11,22) % magnio oksido. Šios trąšos gaunamos taip: magnezitas, kurio sudėtyje yra ne mažiau kaip 86 % magnio oksido, 1,0 val. - 2,0 val. skaidomos azoto rūgšties vandeniniu tirpalu iki 70 oC temperatūroje, gautas reakcijos mišinys maišomas 1 val., po to skaidymo tirpalas standartizuojamas magnezitu iki pH 4, maišomas 2 val. ir paliekamas nusistovėti ne mažiau kaip 15 val. Po nusistovėjimo dekantavimo būdu atskiriamas nuo nuosėdų pirmasis produktas suspensinės magnio nitrato trąšos (pH 4-7,5), kurios gali būti naudojamos augalams papildomai tręšti laistant. Filtruojamos nuosėdos arba nuosėdos ir magnio nitrato suspensija, gaunamas antrasis produktas - skystosios magnio nitrato trąšos, kurios atitinka hidroponikos reikalavimus ir gali būti naudojamos įvairiose laistymo bei drėkinimo sistemose bei gaminant skystųjų trąšų mišinius. Gautose trąšose yra didesnis magnio kiekis, jos gautos paprastesniu būdu ir kuriuo mažiausia žalingų azoto oksidų išgaravimo tikimybė. The invention relates to the field of liquid fertilizer production and can be used in the fertilizer industry to produce liquid magnesium nitrate fertilizers. BACKGROUND OF THE INVENTION: Two types of liquid magnesium nitrate fertilizer are obtained in a simpler manner from a lower concentration (32-40%) by weight of aqueous nitric acid and magnesite by decomposition at lower temperatures with higher concentrations (from 36.2% to 41.5%) of magnesium. the composition of their nutrients in plants is (6.85 - 7.85)% nitrogen and (9.79 - 11.22)% magnesium oxide. The following fertilizers are obtained: magnesite containing at least 86% magnesium oxide, 1.0 h. - 2.0 h The resulting reaction mixture was stirred for 1 h, then the decomposition solution was standardized with magnesite to pH 4 with stirring for 2 h. and left to stand for at least 15 hours. After settling, the first product, suspension magnesium nitrate fertilizer (pH 4-7.5), which can be used for additional fertilization of plants, is separated from the sediment by decantation. Filtration of sediment or suspension of sediment and magnesium nitrate yields a second product of liquid magnesium nitrate fertilizers that meet hydroponics requirements and can be used in a variety of irrigation and irrigation systems and in the production of liquid fertilizer mixtures. The resulting fertilizer has a higher magnesium content, is obtained in a simpler way and has the lowest chance of damaging the harmful oxides of nitrogen.
Description
Išradimas priklauso skystųjų trąšų gamybos sričiai ir gali būti panaudotas trąšų pramonėje gaminant skystąsias magnio nitrato trąšas.The present invention relates to the field of liquid fertilizer production and can be used in the fertilizer industry to produce liquid magnesium nitrate fertilizers.
Žinomas magnio nitrato tirpalo gavimo būdas, kai (37,7 - 39,9) % koncentracijos magnio nitrato tirpalas gaunamas magnezito vandeninę suspensiją sumaišius su bario druskos priedu ir apdorojus 45 % koncentracijos azoto rūgšties tirpalu (95 - 105) °C temperatūroje, o gautą reakcijos mišinį neutralizavus magnezitu ir jį nufiltravus (SU autorinis liudijimas Nr. 1165633, TPK C 01 F 5/38, 1985).It is known to obtain a magnesium nitrate solution by mixing an aqueous solution of magnesium nitrate (37.7-39.9%) with a barium salt additive and treating with a 45% solution of nitric acid at (95-105) ° C. after neutralizing the reaction mixture with magnesium oxide and filtering it (SU license No. 1165633, TPK C 01 F 5/38, 1985).
Šio žinomo techninio sprendimo trūkumai: pagaminamas magnio nitrato tirpalas, kuriame magnio nitrato didžiausia koncentracija yra 39,9 %, magnezitas skaidomas didelės koncentracijos (45%) azoto rūgšties vandeniniu tirpalu aukštoje temperatūroje (95 - 105 °C), todėl į aplinką skaidymo metu gali išgaruoti nuodingi azoto oksidai. Magnezito vandeninės suspensijos ruošimas apsunkina gamybos procesą, tam reikia papildomų laiko ir energetinių sąnaudų. Be to, nurodytu būdu gaunamas magnio nitrato tirpalas gali būti naudojamas chemijos pramonėje gaminant magnio oksidą ar kitus magnio junginius, bet nėra skirtas augalų tręšimui, todėl autoriniame Eudijime nėra nurodyta ar šis tirpalas atitinka hidroponikos reikalavimus.Disadvantages of this known technical solution: Magnesium nitrate solution is prepared with a maximum magnesium nitrate concentration of 39.9%, magnesite is decomposed with high concentration (45%) aqueous solution of nitric acid at high temperature (95 - 105 ° C). evaporated toxic oxides of nitrogen. The preparation of an aqueous suspension of magnesite complicates the production process and requires additional time and energy. In addition, the magnesium nitrate solution thus obtained can be used in the chemical industry for the production of magnesium oxide or other magnesium compounds, but is not intended for fertilization of plants, so the author's Eudiya does not specify whether this solution meets the requirements of hydroponics.
Siūlomo išradimo artimiausias techninis sprendimas yra magnio nitrato tirpalo gavimo būdas, kai (32-40) % magnio nitrato tirpalas gaunamas magnio oksido, hidroksido ar karbonato vandeninę suspensiją apdorojus (50-60) % azoto rūgšties tirpalu iki pH (5,0-6,0) ir gautą reakcijos mišinį nufiltravus (EP patentas Nr. 0107870, TPK C 01 F 5/38, C 05 C 1/02,1984).The closest technical solution of the present invention is to provide a solution of magnesium nitrate in a solution of (32-40)% magnesium nitrate by treating an aqueous suspension of magnesium oxide, hydroxide or carbonate with a solution of (50-60)% nitric acid to pH (5.0-6). 0) and filtering the resulting reaction mixture (EP 0107870, TPC C 01 F 5/38, C 05 C 1 / 02,1984).
Šio techninio sprendimo trūkumai: azoto rūgšties vandeninis tirpalas yra dozuojamas į gamtines žaliavas, kurios yra praskiestos vandeniu, todėl pagaminamas mažesnės koncentracijos' (iki 40 %) magnio nitrato tirpalas. Trąšų gamybos metu naudojamas labai didelės koncentracijos (50-60 %) azoto rūgšties vandeninis tirpalas, dėl to yra didelė tikimybė, kad juo skaidant magnio oksido, hidroksido ar karbonato vandeninę suspensiją į aplinką išgaruos nuodingi azoto oksidai. Magnio žaliavų vandeninės suspensijos ruošimas apsunkina ir pabrangina gamybos procesą, reikalinga papildoma įranga bei priemonės suspensijos stabilumui palaikyti. Magnio nitrato atskyrimui nuo nuosėdų būtinas reakcinio mišinio filtravimas. Patente nurodytu būdu pagaminamas magnio nitrato tirpalas yra skirtas naudoti kaip priedas gaminant birias amonio nitrato trąšas, jis nėra skirtas augalų tręšimui, todėl nėra nurodyta ar šis tirpalas atitinka hidroponikos reikalavimus.Disadvantages of this technical solution: The aqueous solution of nitric acid is added to natural raw materials diluted with water to produce a lower concentration (up to 40%) of magnesium nitrate solution. A very high concentration (50-60%) of nitric acid in aqueous solution is used during fertilizer production, which makes it highly likely that toxic aqueous oxides will be evaporated when the aqueous suspension of magnesium oxide, hydroxide or carbonate is decomposed. The preparation of an aqueous suspension of magnesium raw materials complicates and increases the cost of the production process, requires additional equipment and measures to maintain suspension stability. Filtration of the reaction mixture is necessary to separate the magnesium nitrate from the precipitate. The magnesium nitrate solution produced in the manner described in the patent is intended for use as an additive in the manufacture of bulk ammonium nitrate fertilizers and is not intended for plant fertilization, so it is not specified whether this solution meets the requirements of hydroponics.
Išradimo tikslas yra skystosios magnio nitrato trąšos ir paprastesnis jų gavimo būdas, kuriuo galima gauti dvejas trąšas - skystąsias magnio nitrato trąšas, atitinkančias hidroponikos reikalavimus, ir suspensines magnio nitrato trąšas, kuriose būtų iki 41,5 % magnio nitrato, jų gavimui naudojant mažesnės koncentracijos azoto rūgšties tirpalą ir žemesnėje temperatūrje skaidant žaliavą, kad būtų mažiausia azoto oksidų išgaravimo tikimybė.SUMMARY OF THE INVENTION The present invention relates to liquid magnesium nitrate fertilizers and to a simpler process for obtaining two fertilizers, magnesium nitrate liquid fertilizers that meet hydroponics requirements and magnesium nitrate suspension fertilizers containing up to 41.5% magnesium nitrate using lower concentrations of nitrogen. acid solution and decomposition of the feedstock at lower temperatures to minimize the likelihood of evaporation of nitrogen oxides.
vv
Sis tikslas pasiekiamas taip: skystosios magnio nitrato trąšos gaunamos (1 - 2) vai. magnezitą dozuojant į (32 - 40) % koncentracijos azoto rūgšties tirpalą, tokiu greičiu, kad reakcinio mišinio temperatūra nebūtų aukštesnė kaip 70 °C. Baigus dozavimą, reakcijos mišinys 1 vai. maišomas, o vėliau apdorojamas (neutralizuojamas ir standartizuojamas) magnezitu iki pH 4, po to vėl maišomas 2 vai. ir paliekamas nusistovėti 15 vai. Po nusistovėjimo gautas tirpalas,, kurio pH (4. 7,5), dekantavimo būdu atskiriamas nuo nusistovėjusių nuosėdų. Atskyrus tirpalą, vThis objective is achieved by providing liquid magnesium nitrate fertilizers (1-2). magnesite is added to (32-40)% nitric acid solution at a rate such that the temperature of the reaction mixture is not higher than 70 ° C. After dosing, the reaction mixture was stirred for 1 hour. and then treated (neutralized and standardized) with magnesia to pH 4, then stirred again for 2 hours. and leave to settle for 15 hours. After settling, decant the solution from the precipitate, pH 4,7. After separation of the solution, v
gaunamas pirmasis produktas - suspensinės magnio nitrato trąšos. Šios trąšos , ir : nuosėdos gali būti kartu filtruojamos. Po filtravimo gaunamas antrasis galutinis produktas - skystosios magnio nitrato trąšos. Gautas pirmasis produktas suspensinės magnio nitrato trąšos - tinka augalams papildomai tręšti juos laistant, o antrasis produktas - skystosios magnio nitrato trąšos - atitinka hidroponikos reikalavimus ir tinka naudoti drėkinimo ir laistymo irigacinėse, kapiliarinėse, lašelinėse ir kitokiose sistemose. Gaunamos trąšos, kuriose magnio nitrato koncentracija yra nuo 36,2 % iki 41,5 % , o jų maisto medžiagų sudėtis yra tokia, masės %:the first product to be obtained is magnesium nitrate suspension fertilizer. These fertilizers, and: sediment can be co-filtered. After filtration, the second end product is liquid magnesium nitrate fertilizer. The first product is a suspension magnesium nitrate fertilizer, suitable for additional watering of plants by irrigation, and the second product, liquid magnesium nitrate fertilizer, meets hydroponics requirements and is suitable for use in irrigation, irrigation, capillary, drip and other systems. Fertilizers with a magnesium nitrate content of between 36,2% and 41,5% and with a nutrient content of:
azotas 6,85- 7,85 magnio oksidas 9,79-11,22.nitrogen 6.85-7.85 magnesium oxide 9.79-11.22.
Skystosios magnio nitrato trąšos pagaminamos iš pirminių medžiagų magnezito ir azoto rūgšties vandeninio tirpalo, kurių savybės pateikiamos toliau.Liquid magnesium nitrate fertilizers are made from an aqueous solution of the raw materials magnesite and nitric acid, the characteristics of which are given below.
Magnezitas yra vienas pagrindinių gamtoje randamų magnio mineralų (MgCO3), kuriame, priklausomai nuo rūšies, yra nuo 87 % iki 94 % magnio oksido (MgO). AB “Achema” laboratorijoje ištirti įvairių rūšių magnezito pavyzdžiai, kurių sudėtis pateikta 1 lentelėje.Magnesite is one of the main naturally occurring magnesium minerals (MgCO 3 ), containing 87% to 94% magnesium oxide (MgO), depending on the species. Samples of different types of magnesite are analyzed in the laboratory of Achema AB, the composition of which is given in Table 1.
lentelė. Magnezito rūsių sudėtistable. Composition of Magnesite Cellars
Skystųjų magnio nitrato trąšų gamybai gali būti naudojamas magnezitas, kuriame yra nemažiau kaip 86 % magnio oksido (MgO).Magnesite containing at least 86% magnesium oxide (MgO) may be used in the production of liquid magnesium nitrate fertilizers.
Azoto rūgšties vandeninis tirpalas - gaunamas iš azoto rūgšties (cheminė formulė HNO3) ir bedruskio vandens. Skystųjų magnio nitrato trąšų gavimui naudojamas nuo 32 % iki 40 % koncentracijos azoto rūgšties vandeninis tirpalas.Aqueous solution of nitric acid - obtained from nitric acid (chemical formula HNO 3 ) and salt water. An aqueous solution of 32% to 40% nitric acid is used to produce liquid magnesium nitrate fertilizers.
Išradimo esmė atskleidžiama 2, 3, 4 lentelėse pateiktais pavyzdžiais ir 1 brėžinyje pateikta skystųjų magnio nitrato trąšų gavimo schema.The invention is illustrated by the examples given in Tables 2, 3, 4 and by the flow chart for the production of liquid magnesium nitrate fertilizers.
v lentelė. Žaliavų, naudojamų skystųjų magnio nitrato trąšų gavimui, kiekiaiTable v. Quantities of raw materials used for the production of magnesium nitrate liquid fertilizers
lentelė. Reakcijos mišinio, iš jo gautų magnio nitrato trąšų bei nuosėdų kiekis ir trąšų išvaizdatable. Content of reaction mixture, magnesium nitrate fertilizer and sediment obtained therefrom and appearance of fertilizer
Visas P, produktas - suspensinės magnio nitrato trąšos gali būti filtruojamos kartu su nuosėdomis ir po filtravimo gaunamas toks pat kiekis skystųjų magnio nitrato trąšų.The whole product P - slurry of magnesium nitrate fertilizer can be filtered along with the precipitate and after filtration the same quantity of liquid magnesium nitrate fertilizer is obtained.
lentelė. Skystųjų magnio nitrato trąšų sudėtis ir savybėstable. Composition and properties of liquid magnesium nitrate fertilizers
Iš pateiktų skystųjų magnio nitrato trąšų trijų pavyzdžių efektyviausios yra pirmojo pavyzdžio trąšos, nes jose yra didžiausia magnio oksido koncentracija (11,2%).Of the three examples of liquid magnesium nitrate fertilizers provided, the most effective one is that of the first sample, as it contains the highest magnesium oxide concentration (11.2%).
Skystųjų kalcio nitrato trąšų gavimo būdas realizuojamas pagal schemą, pateiktą 1 brėžinyje.The method for obtaining liquid calcium nitrate fertilizers is implemented according to the scheme shown in Figure 1.
Į reaktorių 1 supilamas iš talpyklos 2 nustatytos koncentracijos azoto rūgšties vandeninis tirpalas, po to įjungiama reaktoriaus 1 maišyklė ir, nenutrūkstamai maišant ne mažesniu kaip 120 aps/min greičiu, į reaktorių 1 laipsniškai pilamas iš talpyklos 3 magnezitas ir stebima temperatūra reaktoriuje 1. Magnezitas pilamas tokiu greičiu, kad temperatūra reaktoriuje neviršytų 70 °C, nes viršijus šią temperatūrą į aplinką išsiskiria azoto oksidai. Magnezito supylimo trukmė yra nuo 1,0 vai. iki 2,0 vai. Supylus visą magnezito kiekį, reakcijos mišinys maišomas 1 vai. Po to matuojamas mišinio pH, kuris turi būti ne mažesnis kaip 4,0. Jei pH nepakankamas, mišinys standartizuojamas neutralizuojant jį magnezitu iki pH 4. Reakcijos mišinys nuo paskutinio magnezito kiekio supylimo maišomas 2 vai. Baigus maišyti, išjungiama maišyklė ir paliekamas reakcijos mišinys reaktoriuje 1 nusistovėti ne mažiau kaip 15 valandų. Tirpalui nuskaidrėjus (paviršiuje susidarius apie 80 % bendro tūrio skaidraus tirpalo), nuo paviršiaus dekantavimo būdu atskiriamas pirmasis produktas P1 - magnio nitrato suspensija, kurios pH yra nuo 4 iki 7,5 ir kurioje gali būti iki 3 % bendro tūrio purių nuosėdų. Suspensinės magnio nitrato trąšos iš reaktoriaus 1 nupilamos į talpyklą 4. Šios trąšos gali būti naudojamos kaip galutinis produktas arba sumaišomos su iš reaktoriaus 1 į talpyklą 5 išpiltomis nuosėdomis ir valomos filtru 6, kurio porų skersmuo yra 25 pm. Po filtravimo gautas filtratas yra antrasis galutinis produktas P2 - skystosios magnio nitrato trąšos. Produktas P, - magnio nitrato suspensija - tinka augalams papildomai tręšti juos laistant, o antrasis produktas P2 - skystosios magnio nitrato trąšos atitinka hidroponikos reikalavimus ir tinka naudoti drėkinimo ir laistymo irigacinėse, kapiliarinėse, lašelinėse ir kitokiose sistemose.Pour into the reactor 1 an aqueous solution of nitric acid of the concentration specified in the container 2, then activate the stirrer of the reactor 1 and, with continuous stirring at a speed of at least 120 rpm, pour magnesite from the container 3 into the reactor 1 and monitor the temperature in reactor 1. at a rate such that the temperature in the reactor does not exceed 70 ° C, because above this temperature nitrogen oxides are released into the environment. Magnesite pouring time is from 1.0 hour. up to 2.0 hours The reaction mixture is stirred for 1 hour after the magnesite is added. Then measure the pH of the mixture, which should be at least 4.0. If the pH is insufficient, the mixture is standardized by neutralizing it with magnesite to pH 4. The reaction mixture is stirred for 2 hours since the last addition of magnesite. Upon completion of stirring, the agitator is switched off and the reaction mixture is left in the reactor 1 for at least 15 hours. After the solution has become clear (about 80% of the total volume of the solution is clear), decant the first product, P 1 , in the form of a suspension of magnesium nitrate, pH 4 to 7.5, which may contain up to 3% total volume of friable sediment. Magnesium nitrate slurry fertilizer slurry is discharged from reactor 1 into container 4. This fertilizer can be used as a final product or mixed with reactor 1 to container 5 sediment and cleaned with a filter 6 having a pore diameter of 25 µm. The filtrate obtained after filtration is the second end product P 2 - liquid magnesium nitrate fertilizer. Product P, - magnesium nitrate suspension - is suitable for additional fertilization of plants by watering, and the second product, P 2 , liquid magnesium nitrate fertilizer, is hydroponics and suitable for use in irrigation, irrigation, capillary, drip and other systems.
Siūlomo techninio sprendimo pranašumai: paprastesnė gamybos technologija, į azoto rūgšties vandeninį tirpalą dozuojamąs sausas, nepraskiestas vandeniu, magnezitas, todėl skystose trąšose gaunama didesnė magnio nitrato koncentracija (iki 41,5 %). Magnezito skaidymui naudojamas mažesnės nei analoge koncentracijos azoto rūgšties vandeninis tirpalas (nuo 32 % iki 40 %), skaidoma žemesnėje temperatūroje (iki 70 °C), todėl yra mažesnė nuodingų azoto oksidų išgaravimo į aplinką tikimybė. Be to, gali būti gaunamos dviejų rūšių trąšos: suspensijnės magnio nitrato trąšos, tinkančios augalų tręšimui laistant, kurios gaunamos iš reakcijos mišinio dekantavimo būdu, nefiltruojant, ir skystosios magnio nitrato trąšos, atitinkančios hidroponikos reikalavimus, kurios gaunamos nufiltravus nuosėdas arba nuosėdas kartu su suspensinėmis magnio nitrato trąšomis.Advantages of the proposed technical solution: simpler production technology, dry, undiluted, magnesite is added to an aqueous solution of nitric acid, resulting in higher concentration of magnesium nitrate (up to 41.5%) in liquid fertilizers. An aqueous solution of nitric acid (32% to 40%) at a lower temperature (up to 70 ° C) is used to decompose magnesite, thus reducing the likelihood of toxic nitrogen oxides being evaporated into the environment. In addition, two types of fertilizers can be obtained: slurry magnesium nitrate fertilizer suitable for watering of plants, obtained from the reaction mixture by decantation without filtration, and liquid magnesium nitrate fertilizer which meets hydroponics requirements, which are obtained by filtration of sediment or sediment with slurry nitrate fertilizer.
Skystosios magnio nitrato trąšos pasižymi tuo, kad jose yra iki 11,2 % magnio oksido. Magnis yra antrinis maisto medžiagų augalams elementas. Žinoma, kad magnis neutralizuoja augaluose susidariusių druskų perteklių, įeina į chlorofilo ir fitino sudėtį, aktyvina fotosintezę ir daugelį fermentų, reguliuojančių fosforo junginių, baltymų ir ypač riebalų apykaitą. Trūkstant magnio neišsivysto chloroplastai, sunkiai vyksta fotosintezė, jaunuose rugių lapuose koncentruojasi fosforo rūgštis ir nevyksta nukleoproteidų ir fosfatidų sintezė. Magnis skatina sacharozės kaupimąsi cukrinių runkelių Šaknyse, krakmolo sintezę bulvėse ir javų sėklose, cukraus kaupimąsi vaismedžių kamienuose ir šaknyse. Taip pat magnis didina augalų atsparumą išorės veiksniams (šalčiui, sausrai) ir ligoms. Lietuvos dirvožemyje nėra pakankamai magnio, todėl augalus būtina papildomai tręšti trąšomis, kuriose yra magnio (Mineralinės trąšos, sudarė K. Plesevičius, Vilnius, 1973,139-146 psi.).Magnesium nitrate liquid fertilizers are characterized by the fact that they contain up to 11.2% magnesium oxide. Magnesium is a secondary element in plant nutrients. Magnesium is known to neutralize the excess salts in the plant, is included in the composition of chlorophyll and phytin, activates photosynthesis and many enzymes that regulate the metabolism of phosphorus compounds, proteins and especially fats. In the absence of magnesium, chloroplasts do not develop, photosynthesis is difficult, phosphoric acid is concentrated in young rye leaves and nucleoprotein and phosphatides are not synthesized. Magnesium promotes the accumulation of sucrose in sugar beet roots, the synthesis of starch in potatoes and cereal seeds, and the accumulation of sugar in fruit stems and roots. Magnesium also increases the resistance of plants to external factors (frost, drought) and diseases. There is not enough magnesium in Lithuanian soil, so the plants must be additionally fertilized with magnesium containing fertilizers (Mineral fertilizers, K. Plesevičius, Vilnius, 1973, 139-146 psi.).
Siūlomas išradimas gali būti panaudotas trąšų pramonėje gaminant papildomam tręšimui skirtas skystąsias magnio nitrato trąšas, atitinkančias hidroponikos reikalavimus ir tinkamas naudoti drėkinimo ir laistymo irigacinėse, kapiliarinėse, lašelinėse ir kitokiose sistemose, bei gaminant suspensines magnio nitrato trąšas, tinkamas papildomam augalų tręšimui laistant.The present invention can be used in the fertilizer industry to produce liquid magnesium nitrate fertilizer liquid fertilizers that meet hydroponics requirements and are suitable for use in irrigation and irrigation irrigation, capillary, drip and other systems, and to produce magnesium nitrate suspension fertilizers suitable for topical plant fertilizer application.
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| CN105621461A (en) * | 2015-12-28 | 2016-06-01 | 大连百傲化学股份有限公司 | Continuous magnesium nitrate production device and technological method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0107870A1 (en) | 1982-10-01 | 1984-05-09 | Stamicarbon B.V. | Production of magnesium nitrate solutions |
| SU1165633A1 (en) | 1983-11-02 | 1985-07-07 | Восточный научно-исследовательский и проектный институт огнеупорной промышленности | Method of obtaining magnesium nitrate solution |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0107870A1 (en) | 1982-10-01 | 1984-05-09 | Stamicarbon B.V. | Production of magnesium nitrate solutions |
| SU1165633A1 (en) | 1983-11-02 | 1985-07-07 | Восточный научно-исследовательский и проектный институт огнеупорной промышленности | Method of obtaining magnesium nitrate solution |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105621461A (en) * | 2015-12-28 | 2016-06-01 | 大连百傲化学股份有限公司 | Continuous magnesium nitrate production device and technological method |
| CN105621461B (en) * | 2015-12-28 | 2017-10-24 | 大连百傲化学股份有限公司 | The device and process of a kind of continuous production magnesium nitrate |
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