CN101654235A - Method for producing food grade monoammonium phosphate by using agricultural monoammonium phosphate - Google Patents
Method for producing food grade monoammonium phosphate by using agricultural monoammonium phosphate Download PDFInfo
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- CN101654235A CN101654235A CN200910272153A CN200910272153A CN101654235A CN 101654235 A CN101654235 A CN 101654235A CN 200910272153 A CN200910272153 A CN 200910272153A CN 200910272153 A CN200910272153 A CN 200910272153A CN 101654235 A CN101654235 A CN 101654235A
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- monoammonium phosphate
- food grade
- filtrate
- phosphoric acid
- agricultural
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Abstract
The invention relates to a method for producing food grade monoammonium phosphate by using agricultural monoammonium phosphate, which comprises the following steps: a, dissolving the agricultural monoammonium phosphate in pure water, fully mixing and stirring, filtering, wherein filtrate is standby; b, adding an oxidizing agent, a decolorizing agent and a biological flocculating agent into the filtrate obtained in the a step, fully mixing and stirring, filtering to obtain filtrate for standby; c, heating the filtrate obtained in the b step to 70-80 DEG C, concentrating for 180-240min until micro crystallization occurs in; d, cooling and crystallizing, and drying to obtain the food grade monoammonium phosphate. By using a phosphating product produced by using wet-process phosphoric acid asraw materials to respectively replace phosphoric acid and ammonia in the production of the prior hot-process phosphoric acid process for producing the food grade monoammonium phosphate, the method forproducing the food grade monoammonium phosphate by using the agricultural food grade monoammonium phosphate greatly lowers the cost of producing the food grade monoammonium phosphate, and has low emission of the three wastes in production, simple process equipment, high production safety, energy saving and consumption reduction.
Description
Technical field
The present invention relates to a kind of preparation method of food grade phosphoric acid one ammonium, the agricultural monoammonium phosphate of particularly a kind of usefulness is the method for raw material production food grade phosphoric acid one ammonium.
Background technology
The method of existing production food grade phosphoric acid one ammonium is to utilize thermal phosphoric acid, and refining is that food grade phosphoric acid and ammonia react generate.Though production process equipment is simple, apparatus and process technical requirements height is produced danger greatly, pollutes greatly the energy consumption height.
Summary of the invention
The objective of the invention is to provide a kind of is raw material with the agrochemical monoammonium phosphate, produces the method for food grade phosphoric acid one ammonium.
The object of the present invention is achieved like this: the agricultural monoammonium phosphate of a kind of usefulness is the method for raw material production food grade phosphoric acid one ammonium, may further comprise the steps:
A. agricultural ammonium phosphate is dissolved with pure water, thorough mixing stirs after-filtration, and filtrate is stand-by;
B. add oxygenant, discoloring agent and biological flocculant in the filtrate that a step obtains, thorough mixing also stirs, and filters, and filtrate is stand-by;
C. the filtrate that obtains in the b step is heated to 70-80 ℃ and concentrates 180～240 minutes, till having micro-crystallization to occur;
D. crystallisation by cooling gets food grade phosphoric acid-ammonium after the drying, and solution is recovered to a step and uses.
Described oxygenant is a hydrogen peroxide, the 0.8-1.1%. of the filtrate quality that add-on obtains for a step
Described discoloring agent is silicon bath soil or activated carbon, the 0.5-1%. of the filtrate quality that add-on obtains for a step.
The 2-3% of the filtrate quality that the described biological flocculant amount of being incorporated as a step obtains.
Described biological flocculant is to be that bacterial classification, nutrient broth are to cultivate to obtain nutrient solution based on 37 ℃ of cultivations through 24 hours with the subtilis, and the thalline in the nutrient solution is separated liquid after removing with residue.
The agricultural monoammonium phosphate of usefulness provided by the invention is the method for raw material production food grade phosphoric acid one ammonium, it is to utilize phosphoric acid by wet process to replace phosphoric acid and ammonia in the existing thermal phosphoric acid explained hereafter to produce food grade phosphoric acid one ammonium respectively for the phosphorization product of raw material production, production food grade phosphoric acid one ammonium cost is reduced greatly, and three waste discharge is low aborning, and processing unit is simple, production security is high, energy-saving and cost-reducing.Monoammonium phosphate by the present invention obtains is white quicksand shape crystal, proportion: 1.803, and fusing point: 180 ℃, stable in the air, at 100 ℃ a small amount of decomposition is arranged, soluble in water.
Its technical indicator is:
This project of GB technical indicator % technical indicator %
The content of 1 monoammonium phosphate 〉=99% 99.2%
2 phosphorus pentoxide contents 〉=60% 61%
3 nitrogen contents 〉=12% 12.11%
4 arsenic content (As)≤0.001% 0.000000008%
5 heavy metal content (Pb)≤0.001% 0.000006%
6 content of fluoride≤0.001% 0.0005%
7 water insoluble matter contents≤0.01% 0.0016%
8 moisture contents≤2% 2%
Embodiment
The preparation of biological flocculant: with the subtilis is that bacterial classification, nutrient broth are to cultivate to obtain nutrient solution based on 37 ℃ of cultivations through 24 hours, and the liquid that the thalline in the nutrient solution is separated after removing with residue is biological flocculant.
Embodiment 1:
A. agricultural ammonium phosphate is dissolved with pure water, thorough mixing stirs after-filtration, and filtrate is stand-by;
B. add 0.8% agent hydrogen peroxide of filtrate quality, 0.5% discoloring agent silicon bath soil or activated carbon and 2% biological flocculant in the filtrate that a step obtains, thorough mixing also stirred 90-120 minute, filtered, and filtrate is stand-by;
C. the filtrate that obtains in the b step is heated to 70-80 ℃ and concentrates 180～240 minutes, till having micro-crystallization to occur, agitator speed is 15-20 rev/min;
D. crystallisation by cooling, agitator is 15/ minute, after the drying food grade phosphoric acid-ammonium, solution is recovered to a step and uses.
Embodiment 2:
A. agricultural ammonium phosphate is dissolved with pure water, thorough mixing stirs after-filtration, and filtrate is stand-by;
B. add 1% agent hydrogen peroxide of filtrate quality, 0.7% discoloring agent silicon bath soil or activated carbon and 2.5% biological flocculant in the filtrate that a step obtains, thorough mixing also stirred 90-120 minute, filtered, and filtrate is stand-by;
C. the filtrate that obtains in the b step is heated to 70-80 ℃ and concentrates 180～240 minutes, till having micro-crystallization to occur, agitator speed is 15-20 rev/min;
D. crystallisation by cooling, agitator is 15/ minute, after the drying food grade phosphoric acid-ammonium, solution is recovered to a step and uses.
Embodiment 3:
A. agricultural ammonium phosphate is dissolved with pure water, thorough mixing stirs after-filtration, and filtrate is stand-by;
B. add 1.1% agent hydrogen peroxide of filtrate quality, 1% discoloring agent silicon bath soil or activated carbon and 3% biological flocculant in the filtrate that a step obtains, thorough mixing also stirred 90-120 minute, filtered, and filtrate is stand-by;
C. the filtrate that obtains in the b step is heated to 70-80 ℃ and concentrates 180～240 minutes, till having micro-crystallization to occur, agitator speed is 15-20 rev/min;
D. crystallisation by cooling, agitator is 15/ minute, after the drying food grade phosphoric acid-ammonium, solution is recovered to a step and uses.
Claims (5)
1, the agricultural monoammonium phosphate of a kind of usefulness is the method for raw material production food grade phosphoric acid one ammonium, it is characterized in that: may further comprise the steps:
A. agricultural monoammonium phosphate is dissolved with pure water, thorough mixing stirs after-filtration, and filtrate is stand-by;
B. add oxygenant, discoloring agent and biological flocculant in the filtrate that a step obtains, thorough mixing also stirs, and filters, and filtrate is stand-by;
C. the filtrate that obtains in the b step is heated to 70-80 ℃ and concentrates 180～240 minutes, till having micro-crystallization to occur;
D. crystallisation by cooling gets food grade phosphoric acid one ammonium after the drying, and solution is recovered to a step and uses.
2, the agricultural monoammonium phosphate of usefulness according to claim 1 is the method for raw material production food grade phosphoric acid one ammonium, it is characterized in that: described oxygenant is a hydrogen peroxide, the 0.8-1.1% of the filtrate quality that add-on obtains for a step.
3, the agricultural monoammonium phosphate of usefulness according to claim 1 is the method for raw material production food grade phosphoric acid one ammonium, it is characterized in that: described discoloring agent is silicon bath soil or activated carbon, the 0.5-1% of the filtrate quality that add-on obtains for a step.
4, the agricultural monoammonium phosphate of usefulness according to claim 1 is the method for raw material production food grade phosphoric acid one ammonium, it is characterized in that: the 2-3% of the filtrate quality that the described biological flocculant amount of being incorporated as a step obtains.
5, the method that is raw material production food grade phosphoric acid one ammonium according to claim 1 or 4 described agricultural monoammonium phosphates, it is characterized in that: described biological flocculant is to be that bacterial classification, nutrient broth are to cultivate to obtain nutrient solution based on 37 ℃ of cultivations through 24 hours with the subtilis, and the thalline in the nutrient solution is separated liquid after removing with residue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102721530A CN101654235B (en) | 2009-09-19 | 2009-09-19 | Method for producing food grade monoammonium phosphate by using agricultural monoammonium phosphate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102721530A CN101654235B (en) | 2009-09-19 | 2009-09-19 | Method for producing food grade monoammonium phosphate by using agricultural monoammonium phosphate |
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| CN101654235A true CN101654235A (en) | 2010-02-24 |
| CN101654235B CN101654235B (en) | 2011-01-19 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101857212A (en) * | 2010-06-04 | 2010-10-13 | 广西明利集团有限公司 | Method for preparing food-grade monoammonium phosphate from wet-process phosphoric acid |
| CN103601165A (en) * | 2013-11-14 | 2014-02-26 | 天津大学 | Method for changing crystal morphology of ammonium dihydrogen phosphate by using additive |
| CN103754851A (en) * | 2014-01-08 | 2014-04-30 | 瓮福（集团）有限责任公司 | Preparation method of battery grade crystal ammonium dihydrogen phosphate |
| CN104341001A (en) * | 2013-08-07 | 2015-02-11 | 宜昌瑞特精细化工有限公司 | Method for producing food-grade zinc sulfate with industrial-grade zinc sulfate as raw material |
| CN106629644A (en) * | 2017-01-14 | 2017-05-10 | 湖南省正源储能材料与器件研究所 | Method for producing industrial first-stage and battery-stage monoammonium phosphate by using fertilizer-stage monoammonium phosphate |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5532750A (en) * | 1978-08-30 | 1980-03-07 | Central Glass Co Ltd | Production of ammonium dihydrogenphosphate crystal |
| CN100528743C (en) * | 2005-12-29 | 2009-08-19 | 叶树滋 | Process for preparing high purity phosphoric acid-ammonium by titanium dioxide waste acid |
| CN100558633C (en) * | 2007-10-26 | 2009-11-11 | 中化重庆涪陵化工有限公司 | The method for preparing PHOSPHORIC ACID TECH.GRADE, food grade phosphoric acid and industrial monoammonium phosphate with phosphoric acid by wet process |
-
2009
- 2009-09-19 CN CN2009102721530A patent/CN101654235B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101857212A (en) * | 2010-06-04 | 2010-10-13 | 广西明利集团有限公司 | Method for preparing food-grade monoammonium phosphate from wet-process phosphoric acid |
| CN101857212B (en) * | 2010-06-04 | 2012-05-09 | 广西钦州桂金诺磷化工有限公司 | Method for preparing food-grade monoammonium phosphate from wet-process phosphoric acid |
| CN104341001A (en) * | 2013-08-07 | 2015-02-11 | 宜昌瑞特精细化工有限公司 | Method for producing food-grade zinc sulfate with industrial-grade zinc sulfate as raw material |
| CN103601165A (en) * | 2013-11-14 | 2014-02-26 | 天津大学 | Method for changing crystal morphology of ammonium dihydrogen phosphate by using additive |
| CN103601165B (en) * | 2013-11-14 | 2015-08-12 | 天津大学 | Additive is utilized to change the method for crystal morphology of ammonium dihydrogen phosphate |
| CN103754851A (en) * | 2014-01-08 | 2014-04-30 | 瓮福（集团）有限责任公司 | Preparation method of battery grade crystal ammonium dihydrogen phosphate |
| CN103754851B (en) * | 2014-01-08 | 2016-05-04 | 瓮福（集团）有限责任公司 | A kind of preparation method of LITHIUM BATTERY crystal phosphoric acid ammonium dihydrogen |
| CN106629644A (en) * | 2017-01-14 | 2017-05-10 | 湖南省正源储能材料与器件研究所 | Method for producing industrial first-stage and battery-stage monoammonium phosphate by using fertilizer-stage monoammonium phosphate |
| CN106629644B (en) * | 2017-01-14 | 2018-11-09 | 湖南省正源储能材料与器件研究所 | A method of producing industrial level-one and LITHIUM BATTERY monoammonium phosphate with chemical fertilizer grade monoammonium phosphate |
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|---|---|
| CN101654235B (en) | 2011-01-19 |
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