Preparation process of food-grade dipotassium hydrogen phosphate

A kind of dipotassium hydrogen phosphate, technology of preparation technology

Pending Publication Date: 2019-11-22
WENGFU DAZHOU CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And adopt high-temperature concentrated product, cause preparation time to be long, make the cost higher in the production process of whole dipotassium hydrogen phosphate product, pollute seriously, do not have better economic effect and environmental protection value

Method used

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Embodiment Construction

[0031] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with specific examples.

[0032] A preparation process of food grade dipotassium hydrogen phosphate, comprising:

[0033] Neutralization: The raw material potassium hydroxide and the raw material phosphoric acid are mixed for neutralization reaction, and the pH value at the end of the neutralization reaction is controlled to be 9.0-9.4 to make a neutralization solution;

[0034] Spray drying: the neutralizing liquid is input into the atomizer on the upper part of the spray drying tower through a high-pressure pump and atomized into an atomized liquid, and at the same time, the hot air is sent into the spray drying tower by an induced draft fan to dry the atomized liquid , to obtain the spray drying tower material; the hot air is produced by burning natural gas to heat the air;

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Abstract

The invention discloses a preparation process of food-grade dipotassium hydrogen phosphate, which comprises the following steps: neutralization: mixing raw materials, potassium hydroxide and phosphoric acid, to carry out neutralization reaction, and controlling the pH value at the end point of the neutralization reaction to 9.0-9.4 to prepare a neutralization solution; spray drying: drying the neutralization solution through a spray drying tower; according to the preparation process, spray drying is adopted, so that the drying efficiency is high, the production cost is reduced, environmental friendliness is achieved, and the purity of food-grade dipotassium hydrogen phosphate is guaranteed.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a preparation process of food-grade dipotassium hydrogen phosphate. Background technique [0002] Dipotassium hydrogen phosphate is an inorganic compound, the appearance is white crystal or amorphous white powder, easily soluble in water, the aqueous solution is slightly alkaline, slightly soluble in alcohol, hygroscopic, and autodissolves at high temperature. [0003] Dipotassium hydrogen phosphate can be used as fermentation agent, flavoring agent, leavening agent, mild alkaline agent for dairy products, yeast food, etc. in the food industry; it can also be used as a bacterial culture medium, raw material for making potassium pyrophosphate, liquid fertilizer, and Corrosion inhibitor of diol antifreeze, feed nutritional supplement, etc.; widely used in national production. [0004] The cost of preparing dipotassium hydrogen phosphate from phosphoric acid is relatively...

Claims

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Application Information

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IPC IPC(8): C01B25/30
CPCC01B25/301C01B25/303C01P2006/80
Inventor 拾佳付勇冉瑞泉刘立锋张俊刘辉
Owner WENGFU DAZHOU CHEM CO LTD
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