Production methods of fire-fighting monoammonium phosphate and ABC dry powder extinguishing agent

A technology of dry powder fire extinguishing agent and monoammonium phosphate, which is applied in the direction of phosphate, fire prevention equipment, phosphorus oxyacid, etc., can solve the problems of large fluctuations in production indicators, unstable quality control, and equipment wear and tear, and achieve good fluidity and energy saving The effect of crushing energy consumption, saving production energy consumption and cost

Active Publication Date: 2020-05-08
GUIZHOU CHANHEN CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Existing production methods of monoammonium phosphate and ABC dry powder fire extinguishing agent for fire fighting have large fluctuations in production indicators, high energy consumption, serious equipment wear and tear, unstable quality control, etc. question
The present invention solves one or more problems in the prior art by improving the production method of monoammonium phosphate and ABC dry powder fire extinguishing agent for fire fighting

Method used

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  • Production methods of fire-fighting monoammonium phosphate and ABC dry powder extinguishing agent
  • Production methods of fire-fighting monoammonium phosphate and ABC dry powder extinguishing agent
  • Production methods of fire-fighting monoammonium phosphate and ABC dry powder extinguishing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] The concentration (in P 2 o 5 Total) is mixed with 26% half-water wet-process phosphoric acid and sulfuric acid to control the mixed acid solution SO 3 / P 2 o 5 = 19.5%;

[0077] Add liquid ammonia to the obtained mixed acid, neutralize until the pH is 4.4, take the neutralized slurry, directly carry out atomization and drying, and obtain monoammonium phosphate for fire protection. After analysis, the content of monoammonium phosphate in the product 81.45%, the content of ammonium sulfate is 16.08%, and the ratio of passing through a 0.04mm standard sieve is 60.4%;

[0078] The fire-fighting monoammonium phosphate obtained in the above steps is batched with other auxiliary materials, and the formula is as follows:

[0079] Monoammonium Phosphate for Fire Fighting ammonium sulfate Silica Quartz sand Mica white clay silicone oil iron yellow 930kg 5kg 20kg 25kg 10kg 10kg 8kg 0.02kg

[0080] Measure all the raw materials e...

Embodiment 2

[0084] The concentration (in P 2 o 5 Total) is 38% semi-water wet-process phosphoric acid mixed with sulfuric acid to control the mixed acid solution SO 3 / P 2 o 5 = 1.7%;

[0085] Add liquid ammonia to the obtained mixed acid, neutralize until the pH is 4.4, take the neutralized slurry, directly atomize and dry to obtain monoammonium phosphate for fire fighting; after analysis, the content of monoammonium phosphate in the product 91.85%, the content of ammonium sulfate is 1.55%, and the ratio of passing through a 0.04mm standard sieve is 63.6%;

[0086] The fire-fighting monoammonium phosphate obtained in the above steps is batched with other auxiliary materials, and the formula is as follows:

[0087] Monoammonium Phosphate for Fire Fighting ammonium sulfate Silica Quartz sand Mica white clay silicone oil iron yellow 820kg 140kg 20kg 10kg 5kg 5kg 7kg 0.02kg

[0088]Measure all the raw materials except silicone oil according...

Embodiment 3

[0092] The concentration (in P 2 o 5 30% semi-water wet-process phosphoric acid mixed with ammonium sulfate (99% purity), the amount of ammonium sulfate is expressed as SO 3 meter, control the mixing ratio SO 3 / P 2 o 5 = 10.8%;

[0093] Add liquid ammonia in the mixture that obtains, neutralize to pH be 4.3, get the slurry after neutralization, directly carry out atomization, drying, obtain the monoammonium phosphate for fire-fighting; After analysis, the content of monoammonium phosphate in the product is 88.79%, the content of ammonium sulfate is 9.59%, and the proportion of 0.04mm standard sieve is 61.2%;

[0094] The fire-fighting monoammonium phosphate obtained in the above steps is mixed with other auxiliary materials, and the formula is as follows.

[0095] Monoammonium Phosphate for Fire Fighting ammonium sulfate Silica Quartz sand Mica white clay silicone oil iron yellow 860kg 75kg 20kg 35kg 5kg 5kg 7kg 0.02kg

[0...

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Abstract

The invention provides a production method of fire-fighting monoammonium phosphate. The production method comprises the following steps: step a, mixing wet-process phosphoric acid with a sulfur-containing compound; b, adding liquid ammonia into the mixture obtained in the step a for neutralization to obtain slurry; and c, atomizing and drying the slurry obtained in the step b to obtain the fire-fighting monoammonium phosphate. The invention further provides a production method of an ABC dry powder extinguishing agent. The method disclosed by the invention has the advantages of low requirementson production equipment, process technology and auxiliary materials and the like, and the fire-fighting monoammonium phosphate and the ABC dry powder extinguishing prepared by the method disclosed bythe invention have the characteristics of good fluidity, high bulk density and low water absorption rate.

Description

technical field [0001] The invention belongs to the field of fire protection industry, and relates to a method for producing monoammonium phosphate for fire protection and a method for further producing ABC dry powder fire extinguishing agent on the basis of producing monoammonium phosphate for fire protection. Background technique [0002] The new national standard GB 4066-2017 for dry powder fire extinguishing agent was officially implemented on July 1, 2018. The implementation of the new standard puts forward higher requirements for the internal indicators of ABC dry powder fire extinguishing agent: (1) The main content of monoammonium phosphate is required Increase from the original 50% to more than 75%, and the sum of the main fire extinguishing components is not less than 90%; (2) The proportion of the chassis is increased from the original 50% to more than 55%, and the content of monoammonium phosphate in the chassis is greater than or equal to 75% ; (3) The moisture ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/28A62D1/00
CPCC01B25/28A62D1/0014
Inventor 龙辉杨烽李剑秋吴晓马忠镜王佳才
Owner GUIZHOU CHANHEN CHEM CO LTD
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