A special anti-caking agent for ammonium sulfate and its preparation method and application

An anti-caking agent, ammonium sulfate technology, applied in the application, ammonium salt fertilizer, nitrogen fertilizer and other directions, can solve problems such as inability to solve ammonium sulfate agglomeration

Active Publication Date: 2021-06-18
北京尧之龙科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the anti-caking agent is suitable for granular fertilizers, it cannot solve the problem of ammonium sulfate caking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] In yet another typical embodiment of the present invention, a kind of preparation method of anti-caking agent special for ammonium sulfate is provided, comprising steps as follows:

[0037] (1) After heating the water, add a surfactant, a crystal control agent, and a crystallization agent to the water in turn, and stir until they are completely dissolved;

[0038] (2) Add defoamer in proportion, continue to stir until it is evenly mixed, and then stop heating;

[0039] (3) After the solution in step (2) drops to room temperature, add a film-forming agent and a volatile solvent into the solution, and stir until the mixture is evenly mixed to obtain an anti-caking agent.

[0040] Wherein, in the step (1), the heating temperature is 70-90°C, preferably, the heating temperature in the step (1) is 80°C; if the heating temperature is too low, the dissolution is insufficient, and the heating temperature is too high, which not only increases the energy consumption , and may al...

Embodiment 1

[0049] Water 34%, Methanol 24.5%, White latex 30%, NP-10 3%, AEO-9 2%, Mordant 2%, Sodium dodecyl naphthalene sulfonate 4%, Tributyl phosphate by mass percentage 0.5% is prepared as an anti-caking agent.

[0050] The preparation method is as follows:

[0051] (1) After heating the water to 80°C, add surfactants NP-10 and AEO-9, crystal control agent sodium dodecyl naphthalene sulfonate, and crystallization agent to the water in sequence, and stir until they are completely dissolved;

[0052] (2) Add defoamer tributyl phosphate in proportion, continue to stir and stop heating after mixing;

[0053] (3) After the solution in step (2) drops to room temperature, add film-forming agent white latex and volatile solvent methanol into the solution, stir until mixed evenly, and obtain an anti-caking agent.

[0054] Among them, manganese sulfate, sodium polyphosphate, and sodium sulfate are selected as the crystallization agent to prepare anti-caking agents respectively, and three ant...

Embodiment 2

[0059] According to mass percentage, take 34% of water, 24.5% of methanol, 30% of white latex, 3% of NP-10, 2% of AEO-9, 2% of manganese sulfate, 4% of crystal control agent, 0.5% of tributyl phosphate Block, preparation method is the same as embodiment 1. Among them, the crystal control agent is respectively selected from sodium dodecyl sulfate, sodium dodecylbenzenesulfonate, sodium dodecylsulfonate, and sodium dodecylnaphthalenesulfonate to make anti-caking agents respectively, which are respectively recorded as water Agent 4, Liquid Agent 5, Liquid Agent 6, and Liquid Agent 7. Carry out quick test according to embodiment 1, experimental result is as follows table 2:

[0060] Table 2

[0061] Anti-caking agent Liquid 4 Liquid 5 Liquid 6 Liquid 7 blank Agglomeration rate (%) 19.42 17.85 24.13 27.25 69.23

[0062] From the experimental results, it can be seen that sodium dodecylsulfate and sodium dodecylbenzenesulfonate have better crystall...

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Abstract

The invention provides a special anti-caking agent for ammonium sulfate, a preparation method and application thereof. The anti-caking agent is a water-soluble liquid anti-caking agent. Specifically, the anti-caking agent is composed of: water: 20%-50%, volatile solvent: 10%-30%, film-forming agent: 20% % to 40%, crystallization agent: no more than 10%, surfactant: no more than 10%, crystal control agent: no more than 10%, defoamer: no more than 3%. The anti-caking agent of the invention not only effectively overcomes the use defects of oil agents and tablet anti-caking agents, improves the anti-caking effect, but also effectively reduces the phenomena of whitening, pulverization and hair growth on the surface of the ammonium sulfate fertilizer. Moreover, the preparation process is simple, efficient, convenient to use, suitable for industrial preparation, and conducive to popularization and application.

Description

technical field [0001] The invention belongs to the field of chemical fertilizer additives, in particular to a special anti-caking agent for ammonium sulfate and its preparation method and application. Background technique [0002] Ammonium sulfate is referred to as ammonium sulfate, commonly known as fertilizer field powder. It is the earliest nitrogen fertilizer variety produced and used in my country. It is suitable for general soil and crops. It can make branches and leaves grow vigorously, improve fruit quality and yield, and enhance crop resistance to disasters. It can be used as base fertilizer , topdressing and seed fertilizer. [0003] At present, domestic ammonium sulfate exports are increasing year by year, while foreign countries require ammonium sulfate to be completely water-soluble, so only water-soluble anti-caking agents can be used. At present, domestic water-soluble anti-caking agents are mainly divided into two types: liquid and powder. The powder water-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/30C05G3/50C05G3/40
CPCC05C3/00C05G3/00C05G3/20C05G5/30
Inventor 张斌张占方张金娥赵全辉马海林杜振宇刘方春杨明明邢尚军
Owner 北京尧之龙科技发展有限公司
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