CN102649657B - Production method for macroelement fully water-soluble fertilizer - Google Patents
Production method for macroelement fully water-soluble fertilizer Download PDFInfo
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- CN102649657B CN102649657B CN 201210154344 CN201210154344A CN102649657B CN 102649657 B CN102649657 B CN 102649657B CN 201210154344 CN201210154344 CN 201210154344 CN 201210154344 A CN201210154344 A CN 201210154344A CN 102649657 B CN102649657 B CN 102649657B
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Abstract
The invention belongs to the technical field of production of composite fertilizer and relates to a production method for macroelement fully water-soluble fertilizer. During the production of composite fertilizer, the macroelement fully water-soluble fertilizer is prepared by the following steps: treating coarse phosphoric acid by using a chelating agent, wherein the chelating agent is prepared from water, ethylenediamine tetramethylene phosphonate, diethylenetriamine pentamethylene phosphonate, 8-hydroxyquinoline, ethylenediamine di-o-phenyl sodium acetate and sodium polyacrylate according to a certain ratio; mixing the treated water-soluble phosphate fertilizer with water-soluble nitrogen fertilizer and water-soluble potassic fertilizer and pelleting; and drying and cooling to obtain the macroelement fully water-soluble fertilizer. The composite fertilizer produced by the method has high water solubility, retains secondary and trace metal elements, such as iron, magnesium, aluminum, calcium and the like, necessary to soil, improves the product quality and reduces production cost.
Description
Technical field
The invention belongs to the compound manure production technical field, relate to the complete water-soluble fertilizer production method of a kind of macroelement.
Background technology
Macroelement water-soluble fertilizer, be a kind of can be water-soluble fully macroelement nitrogen, phosphorus, potassium and multiple in, the polyelement composite fertilizer of trace element, it can promptly be dissolved in the water, and absorbed by crop easily, and its absorption rate is higher relatively.In water-soluble fertilizer is produced, influencing water miscible raw material mainly is raw phosphoric acid, present water-soluble fertile production almost is to select water-soluble phosphorus raw materials such as industrial ammonium phosphate, potassium primary phosphate for use entirely, and these raw materials are to get by producing behind yellow phosphorus or the wet phosphoric acid purifying, not only long flow path but also price are high, cause water-soluble fertile cost higher.Conventional wet phosphoric acid in carrying out ammonia and the time, impurity such as iron wherein, aluminium, magnesium, calcium generate insoluble phosphoric acid, sulfuric acid double salt, cause the finished product water-insoluble to exceed standard, and do not reach water-soluble fertile standard.
Summary of the invention
The purpose of this invention is to provide a kind of good water solubility, keep the complete water-soluble fertilizer production method of macroelement of the necessary metallic element of soil institute.
For achieving the above object, the present invention adopts following technical scheme:
The complete water-soluble fertilizer production method of a kind of macroelement of the present invention comprises the steps:
Steps A) preparation of sequestrant: prepare the composition of following ratio of weight and number,
Water 50
Ethylene diamine tetra methylene phosphonic acid salt 5--10
Diethylene triamine pentamethylene phosphonic salt 2--10
Oxine 5-10
Quadrol two adjacent sodiums 10-20
Sodium polyacrylate 10-20;
Compound method is as follows:
Water being heated to 40-60 ℃, adding sodium polyacrylate, is 2-3 with the sulfuric acid adjust pH, adds ethylene diamine tetra methylene phosphonic acid salt, diethylene triamine pentamethylene phosphonic reactant salt again 1-2 hour; Above-mentioned solution is heated to 70-90 ℃, adds oxine, quadrol two adjacent sodiums, regulating the pH value with sodium hydroxide is 5-6, reacts 2-3 hour, stops heating, naturally cools to normal temperature, obtains described sequestrant;
Step B) raw phosphoric acid chelation treatment: with above-mentioned chelating liquid 5% adding in the raw phosphoric acid by weight, under 50-60 ℃ of environment stirring reaction 1-2 hour, it was 5-6 that the ammonia of ventilating is then regulated pH value, stops heating, stops stirring, obtains water soluble phosphorous fertilizer;
Step C) with above-mentioned water soluble phosphorous fertilizer and water-soluble nitrogenous fertilizer, water soluble potassic fertilizer mixing granulation, drying, cooling then obtains the complete water-soluble fertilizer of described macroelement.
Present method is carried out chelation treatment to the raw phosphoric acid in the Wet-process Phosphoric Acid Production, under certain temperature, potential of hydrogen condition, impurity such as the iron in the phosphoric acid, aluminium, magnesium, calcium are carried out composite chelate, shielding, and back segment with ammonia in the time impurity no longer become to salt out, be water-soluble state, be the water-soluble fertile condition of having created of producing.This law adopts carries out chelating, shielding to impurity, the metal-salt that forms is solvable and all enter product, and metallic elements such as iron, magnesium, aluminium, calcium during to be soil necessary, trace element, in water-soluble fertile production, be to need to add, this method has kept these elements, can reduce or not add, again escapable cost.
Embodiment
Embodiment 1:
The complete water-soluble fertilizer production method step of a kind of macroelement of the present invention is as follows:
Steps A) preparation of sequestrant: prepare the composition of following ratio of weight and number,
Water 50
Ethylene diamine tetra methylene phosphonic acid salt 5-
Diethylene triamine pentamethylene phosphonic salt 2-
Oxine 5
Quadrol two adjacent sodiums 10
Sodium polyacrylate 10;
Compound method is as follows:
Water being heated to 40-60 ℃, adding sodium polyacrylate, is 2 with the sulfuric acid adjust pH, adds ethylene diamine tetra methylene phosphonic acid salt, diethylene triamine pentamethylene phosphonic reactant salt again 1 hour; Above-mentioned solution is heated to 70-90 ℃, adds oxine, quadrol two adjacent sodiums, regulating the pH value with sodium hydroxide is 5, reacts 2 hours, stops heating, naturally cools to normal temperature, obtains described sequestrant;
Step B) raw phosphoric acid chelation treatment: in above-mentioned chelating liquid 5% adding raw phosphoric acid by weight, stirring reaction is 1 hour under 50-60 ℃ of environment, and it is 5 that the ammonia of ventilating is then regulated the pH value, stops heating, stops to stir, and obtains water soluble phosphorous fertilizer;
Step C) with above-mentioned water soluble phosphorous fertilizer and water-soluble nitrogenous fertilizer, water soluble potassic fertilizer mixing granulation, drying, cooling then obtains the complete water-soluble fertilizer of described macroelement.
Embodiment 2:
The complete water-soluble fertilizer production method step of a kind of macroelement of the present invention is as follows:
Steps A) preparation of sequestrant: prepare the composition of following ratio of weight and number,
Water 50
Ethylene diamine tetra methylene phosphonic acid salt 10
Diethylene triamine pentamethylene phosphonic salt 10
Oxine 10
Quadrol two adjacent sodiums 20
Sodium polyacrylate 20;
Compound method is as follows:
Water being heated to 40-60 ℃, adding sodium polyacrylate, is 3 with the sulfuric acid adjust pH, adds ethylene diamine tetra methylene phosphonic acid salt, diethylene triamine pentamethylene phosphonic reactant salt again 2 hours; Above-mentioned solution is heated to 70-90 ℃, adds oxine, quadrol two adjacent sodiums, regulating the pH value with sodium hydroxide is 6, reacts 3 hours, stops heating, naturally cools to normal temperature, obtains described sequestrant;
Step B) raw phosphoric acid chelation treatment: in above-mentioned chelating liquid 5% adding raw phosphoric acid by weight, stirring reaction is 2 hours under 50-60 ℃ of environment, and it is 6 that the ammonia of ventilating is then regulated the pH value, stops heating, stops to stir, and obtains water soluble phosphorous fertilizer;
Step C) with above-mentioned water soluble phosphorous fertilizer and water-soluble nitrogenous fertilizer, water soluble potassic fertilizer mixing granulation, drying, cooling then obtains the complete water-soluble fertilizer of described macroelement.
Embodiment 3:
The complete water-soluble fertilizer production method step of a kind of macroelement of the present invention is as follows:
Steps A) preparation of sequestrant: prepare the composition of following ratio of weight and number,
Water 50
Ethylene diamine tetra methylene phosphonic acid salt 8
Diethylene triamine pentamethylene phosphonic salt 6
Oxine 7
Quadrol two adjacent sodiums 15
Sodium polyacrylate 15;
Compound method is as follows:
Water being heated to 45 ℃, adding sodium polyacrylate, is 2.5 with the sulfuric acid adjust pH, adds ethylene diamine tetra methylene phosphonic acid salt, diethylene triamine pentamethylene phosphonic reactant salt again 1 hour; Above-mentioned solution is heated to 80 ℃, adds oxine, quadrol two adjacent sodiums, regulating the pH value with sodium hydroxide is 5, reacts 2 hours, stops heating, naturally cools to normal temperature, obtains described sequestrant;
Step B) raw phosphoric acid chelation treatment: in above-mentioned chelating liquid 5% adding raw phosphoric acid by weight, stirring reaction is 1 hour under 50-60 ℃ of environment, and it is 5 that the ammonia of ventilating is then regulated the pH value, stops heating, stops to stir, and obtains water soluble phosphorous fertilizer;
Step C) with above-mentioned water soluble phosphorous fertilizer and water-soluble nitrogenous fertilizer, water soluble potassic fertilizer mixing granulation, drying, cooling then obtains the complete water-soluble fertilizer of described macroelement.
Claims (1)
1. the complete water-soluble fertilizer production method of macroelement is characterized in that comprising the steps:
Steps A) preparation of sequestrant: prepare the composition of following ratio of weight and number,
Water 50
Ethylene diamine tetra methylene phosphonic acid salt 5--10
Diethylene triamine pentamethylene phosphonic salt 2--10
Oxine 5-10
Quadrol two adjacent sodiums 10-20
Sodium polyacrylate 10-20;
Compound method is as follows:
Water being heated to 40-60 ℃, adding sodium polyacrylate, is 2-3 with the sulfuric acid adjust pH, adds ethylene diamine tetra methylene phosphonic acid salt, diethylene triamine pentamethylene phosphonic reactant salt again 1-2 hour; Above-mentioned solution is heated to 70-90 ℃, adds oxine, quadrol two adjacent sodiums, regulating the pH value with sodium hydroxide is 5-6, reacts 2-3 hour, stops heating, naturally cools to normal temperature, obtains described sequestrant;
Step B) raw phosphoric acid chelation treatment: with above-mentioned chelating liquid 5% adding in the raw phosphoric acid by weight, under 50-60 ℃ of environment stirring reaction 1-2 hour, it was 5-6 that the ammonia of ventilating is then regulated pH value, stops heating, stops stirring, obtains water soluble phosphorous fertilizer;
Step C) with above-mentioned water soluble phosphorous fertilizer and water-soluble nitrogenous fertilizer, water soluble potassic fertilizer mixing granulation, drying, cooling then obtains the complete water-soluble fertilizer of described macroelement.
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| CN106316588A (en) * | 2016-08-14 | 2017-01-11 | 田慧 | Foliage spray fertilizer for Clivia gardenii Hook |
| CN111689805A (en) * | 2020-06-23 | 2020-09-22 | 四川大学 | Production method of compound fertilizer |
| CN111662115A (en) * | 2020-06-23 | 2020-09-15 | 四川大学 | Production method of ammonium phosphate fertilizer |
| CN111662098A (en) * | 2020-07-06 | 2020-09-15 | 四川大学 | Monoammonium phosphate suspension fertilizer containing medium trace elements and preparation method thereof |
| CN111675587A (en) * | 2020-07-06 | 2020-09-18 | 四川大学 | Suspended compound fertilizer containing medium trace elements and preparation method thereof |
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| CN102219198A (en) * | 2011-05-03 | 2011-10-19 | 湖北富邦科技股份有限公司 | Multifunctional sinking agent used in production of phosphoric acid by wet method |
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Address after: 610500 south two intersection of Xindu Industrial Development Zone, Chengdu, Sichuan Patentee after: Chengdu cloud picture Cmi Holdings Ltd Address before: 610500 south two intersection of Xindu Industrial Development Zone, Chengdu, Sichuan Patentee before: Chengdu Xindu Chemical Industry Co., Ltd. |