CN107572492A - A kind of MAP anticaking agent method of slurry process generation - Google Patents
A kind of MAP anticaking agent method of slurry process generation Download PDFInfo
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- CN107572492A CN107572492A CN201711009734.6A CN201711009734A CN107572492A CN 107572492 A CN107572492 A CN 107572492A CN 201711009734 A CN201711009734 A CN 201711009734A CN 107572492 A CN107572492 A CN 107572492A
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- map
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- medium crystallization
- phosphoric acid
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Abstract
The invention discloses a kind of Adding Way of the MAP anticaking agent of slurry process generation, it is characterised in that：MAP is produced for slurry concentrated process, in process of production before MAP crystallization, adds the medium crystallization agent of anti-caking, the coal addition position of medium crystallization agent is in the slurry in phosphoric acid or after ammonia neutralization.
Description
Technical field
The present invention relates to the MAP anticaking agent method of slurry process generation, belong to chemical technology field.
Background technology
MAP is the common supply for containing phosphorus composite fertilizer, can directly applying as crops phosphorus, nitrogen,
Can be as the raw material of production compound fertilizer.The production of MAP mainly has two kinds of works of Traditional Method and slurry concentrated process at present
Skill：The former with after wet-process phosphoric acid concentration with ammonia and generation phosphorus ammonium, obtain ammonium phosphate product after phosphor ammonium slurry drying process, the method life
The good product quality of production, but higher is required to phosphoric acid concentration and impurity content；The latter is to neutralize phosphoric acid,diluted and ammonia, phosphor ammonium slurry
Concentrated drying again, obtains ammonium phosphate product, and for the product of this method production compared with conventional method, quality relative mistake is a little, but to phosphoric acid
The requirement of concentration and impurity is relatively low.MAP is mainly powder product in the market, because it contains impurity, easy moisture absorption
Caking, this not only to phosphate fertilizer storing, using making troubles, even more constrains production marketing of the MAP in high-end market.
The external research about caking mechanism is very active before last century the nineties, is concentrated mainly on agglomeration resistance in the recent period
It is the effective way for preventing chemicals from luming using anti-caking agent, external many chemical companies enter to this in the development of agent
Go substantial amounts of research, develop large-tonnage product, the major producing country of anti-caking agent is the U.S., France, Holland and Russia sieve at present
This grade country.The chemicals anti-caking agent research in China is started late, but because the demand in market is larger, development is very fast, special
It is not recent, the research of this respect is very active, is all achieved very in the research of caking mechanism and the exploitation of agglomeration resistance product
Big progress.
The powder or liquid anti-caking agent developed both at home and abroad, more methods using sprinkling or spraying allow its Wrapped fertilizer
Particle or powdery；Or the particle of its fertilizer or powdery surface is made to be modified using surfactant；In spite of effect it is preferable, have
It is general, but all different degrees of there is price is high, high energy consumption and the problems such as technical sophistication.
The content of the invention
The technical problem to be solved in the present invention is：A kind of adding for powdery monoammonium phosphate anticaking agent of slurry process generation, is provided
Entering method, this method is the brilliant hygroscopicity practised, reduce MAP for changing MAP by adding medium crystallization agent and crystallizing, so as to
Improve the caking performance of MAP.
The technical scheme is that：A kind of Adding Way of the MAP anticaking agent of slurry process generation, for material
Concentration method production MAP is starched, in process of production before MAP crystallization, adds the medium crystallization agent of anti-caking, medium crystallization agent
Coal addition position is in the slurry in phosphoric acid or after ammonia neutralization.
Described medium crystallization agent is calcium chloride, aluminium chloride, iron chloride, calcium nitrate, aluminum nitrate, ferric nitrate, alundum (Al2O3), hydrogen
One or more mixture in aluminum oxide.
The mass ratio of described medium crystallization agent and finished product MAP is 0.1-10:100.
The medium crystallization agent of described anti-caking is added in phosphoric acid storage tank, phosphoric acid conveyance conduit, an effect evaporation and concentration slurry, two effects
It is concentrated by evaporation in slurry or in forced circulation ammoniation reactor.
Beneficial effects of the present invention：The brilliant habit that the present invention changes MAP and crystallized by adding medium crystallization agent, reduces phosphoric acid
The hygroscopicity of one ammonium, so as to improve the caking performance of MAP, it is readily transported and uses, improve the competition of monoammonium phosphate product
Power.
Brief description of the drawings
Fig. 1 is the MAP configuration of surface for not adding medium crystallization agent；
Fig. 2 is the MAP configuration of surface for adding medium crystallization agent；
Fig. 3 is the MAP form for not adding medium crystallization agent；
Fig. 4 is the MAP form for adding medium crystallization agent.
Embodiment
Embodiment 1
During slurry process produces MAP, calcium nitrate, aluminum nitrate and ferric nitrate are added in phosphoric acid storage tank, often produces 1
Ton finished product MAP, the addition total amount of calcium nitrate, aluminum nitrate and ferric nitrate three is about 10-30 kilograms.As a result with upper example class
Seemingly, do not add the MAP surface crystallization of medium crystallization agent thick, lump more serious；The MAP surface compact of medium crystallization agent is added,
Caking is lighter.
Fig. 1 is the MAP configuration of surface for not adding medium crystallization agent, and Fig. 2 is the MAP configuration of surface for adding medium crystallization agent,
It can substantially find out that the crystallization of MAP powder surface is tiny after adding medium crystallization agent, surface is dense, and does not add the phosphorus of medium crystallization agent
A sour ammonium surface crystallization is thick, and powder space is larger.The MAP of production is subjected to pile experiment in 20 days, situation is shown in after unpacking
Fig. 3 and Fig. 4, not plus medium crystallization agent MAP caking it is more serious, substantially without bulk cargo, it is higher to form bulk strength, can not with hand
Do to dissipate；Although the MAP for adding medium crystallization agent has seemed bulk product, but gently dissipated once dynamic caking.
Embodiment 2
During slurry process produces MAP, calcium chloride, aluminium chloride, iron chloride are added in phosphoric acid conveyance conduit, is often given birth to
1 ton of finished product MAP is produced, the addition total amount of calcium chloride, aluminium chloride and iron chloride three is about 1-10 kilograms.As a result with upper example
It is similar, do not add the MAP surface crystallization of medium crystallization agent thick, lump more serious；The MAP surface for adding medium crystallization agent causes
Close, caking is lighter.
Embodiment 3
During slurry process produces MAP, it is concentrated by evaporation in an effect in slurry and adds calcium chloride, often produce 1 ton of finished product phosphorus
A sour ammonium, the addition total amount of calcium chloride is about 50 kilograms.As a result it is similar with upper example, do not add the MAP surface crystallization of medium crystallization agent
Thick, caking is more serious；The MAP surface compact of medium crystallization agent is added, caking is lighter.
Embodiment 4
During slurry process produces MAP, it is concentrated by evaporation in two effects in slurry and adds alundum (Al2O3) and aluminium hydroxide,
The addition total amount of often 1 ton of finished product MAP of production, alundum (Al2O3) and aluminium hydroxide is about 80 kilograms.As a result with upper example class
Seemingly, do not add the MAP surface crystallization of medium crystallization agent thick, lump more serious；The MAP surface compact of medium crystallization agent is added,
Caking is lighter.
Embodiment 5
During slurry process produces MAP, ferric nitrate, calcium nitrate and aluminum nitrate are added in phosphoric acid storage tank, often produces 1
Ton finished product MAP, the addition total amount of ferric nitrate, calcium nitrate and aluminum nitrate three is about double centner.It is as a result similar with upper example,
Not plus medium crystallization agent MAP surface crystallization it is thick, caking it is more serious；Add the MAP surface compact of medium crystallization agent, caking
It is lighter.
Embodiment 6
Slurry process produce MAP during, two effect be concentrated by evaporation slurries in add calcium chloride, calcium nitrate, aluminum nitrate and
Ferric nitrate, 1 ton of finished product MAP is often produced, calcium chloride, calcium nitrate, the addition total amount of aluminum nitrate and ferric nitrate are about 60
Kilogram.As a result it is similar with upper example, do not add the MAP surface crystallization of medium crystallization agent thick, lump more serious；Add medium crystallization agent
MAP surface compact, caking are lighter.
Claims (4)
- A kind of 1. MAP anticaking agent method of slurry process generation, it is characterised in that：Phosphoric acid is produced for slurry concentrated process One ammonium, in process of production before MAP crystallization, the medium crystallization agent of anti-caking is added, the coal addition position of medium crystallization agent is in phosphoric acid Or in the slurry after ammonia neutralization.
- A kind of 2. MAP anticaking agent method of slurry process generation according to claim 1, it is characterised in that：It is described Medium crystallization agent be calcium chloride, aluminium chloride, iron chloride, calcium nitrate, aluminum nitrate, ferric nitrate, alundum (Al2O3), one in aluminium hydroxide Kind, or more than one mixture.
- A kind of 3. MAP anticaking agent method of slurry process generation according to claim 1, it is characterised in that：It is described The mass ratio of medium crystallization agent and finished product MAP be 0.1-10:100.
- A kind of 4. MAP anticaking agent method of slurry process generation according to claim 1, it is characterised in that：It is described Anti-caking medium crystallization agent be added in phosphoric acid storage tank, phosphoric acid conveyance conduit, one effect be concentrated by evaporation slurry in, two effect be concentrated by evaporation slurries In or forced circulation ammoniation reactor in.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711009734.6A CN107572492A (en) | 2017-10-25 | 2017-10-25 | A kind of MAP anticaking agent method of slurry process generation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711009734.6A CN107572492A (en) | 2017-10-25 | 2017-10-25 | A kind of MAP anticaking agent method of slurry process generation |
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| CN107572492A true CN107572492A (en) | 2018-01-12 |
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| CN201711009734.6A Pending CN107572492A (en) | 2017-10-25 | 2017-10-25 | A kind of MAP anticaking agent method of slurry process generation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112875664A (en) * | 2021-01-29 | 2021-06-01 | 江山捷尔世阻燃材料有限公司 | Preparation method of anti-caking low-moisture-absorption diammonium hydrogen phosphate solid crystal powder |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101723756A (en) * | 2009-12-25 | 2010-06-09 | 瓮福（集团）有限责任公司 | Method for preventing ammonium phosphate product from caking |
| CN107056367A (en) * | 2016-12-31 | 2017-08-18 | 新昌县迪斯曼科技有限公司 | Make the method for ammonium phosphate anti-caking agent with sulfate |
| CN107746323A (en) * | 2017-10-24 | 2018-03-02 | 贵州大学 | A kind of MAP anticaking agent method of slurry process generation |
-
2017
- 2017-10-25 CN CN201711009734.6A patent/CN107572492A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101723756A (en) * | 2009-12-25 | 2010-06-09 | 瓮福（集团）有限责任公司 | Method for preventing ammonium phosphate product from caking |
| CN107056367A (en) * | 2016-12-31 | 2017-08-18 | 新昌县迪斯曼科技有限公司 | Make the method for ammonium phosphate anti-caking agent with sulfate |
| CN107746323A (en) * | 2017-10-24 | 2018-03-02 | 贵州大学 | A kind of MAP anticaking agent method of slurry process generation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112875664A (en) * | 2021-01-29 | 2021-06-01 | 江山捷尔世阻燃材料有限公司 | Preparation method of anti-caking low-moisture-absorption diammonium hydrogen phosphate solid crystal powder |
| CN112875664B (en) * | 2021-01-29 | 2022-08-02 | 江山捷尔世阻燃材料有限公司 | Preparation method of anti-caking low-moisture-absorption diammonium hydrogen phosphate solid crystal powder |
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Application publication date: 20180112 |
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