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Preparing method of potassium sulphate reagent

A technology of potassium sulfate and reagent, applied in the field of preparation of potassium sulfate reagent, to achieve the effects of simplifying production process, shortening working hours and reducing production cost

Inactive Publication Date: 2015-11-04
TIANJIN YONGDA CHEM REAGENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this process still inevitably has defects caused by flotation

Method used

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  • Preparing method of potassium sulphate reagent

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Effect test

Embodiment 1

[0024] A kind of preparation method of potassium sulfate reagent, the step of its preparation method is:

[0025] (1) Add deionized water into a 1000L glass-lined reactor, start the agitator, then weigh concentrated sulfuric acid (59%-98%), vacuum the concentrated sulfuric acid into a high-level bottle, slowly add it to the reactor, and then Add solid potassium hydroxide under stirring, and the added concentrated sulfuric acid, deionized water, and solid potassium hydroxide are 16%, 55% and 18% by weight to complete the addition, forming a mixed solution and separating out a white precipitate. ;

[0026] (2) adjust the pH value of the mixed solution, and control the pH value at 5.1;

[0027] (3) Heat the mixed solution to 90°C, heat and stir for 2 hours to react; until the reaction is complete, the precipitate is completely separated out;

[0028] (4) Lead the mixed solution and the precipitated out into the stainless steel bucket, let it cool;

[0029] (5) dehydrating the ...

Embodiment 2

[0032] A kind of preparation method of potassium sulfate reagent, the step of its preparation method is:

[0033] (1) Add deionized water into a 1000L glass-lined reactor, start the agitator, then weigh concentrated sulfuric acid (59%-98%), vacuum the concentrated sulfuric acid into a high-level bottle, slowly add it to the reactor, and then Add solid potassium hydroxide under stirring, and the weight percentages of added concentrated sulfuric acid, deionized water, and solid potassium hydroxide are 16%, 58% and 20% respectively, and a mixed solution is formed and a white precipitate is precipitated. ;

[0034] (2) adjust the pH value of the mixed solution, and control the pH value at 5.1;

[0035] (3) Heat the mixed solution to 90°C, heat and stir for 2 hours to react; until the reaction is complete, the precipitate is completely separated out;

[0036] (4) Lead the mixed solution and the precipitated out into the stainless steel bucket, let it cool;

[0037] (5) dehydrati...

Embodiment 3

[0040] A kind of preparation method of potassium sulfate reagent, the step of its preparation method is:

[0041] (1) Add deionized water into a 1000L glass-lined reactor, start the agitator, then weigh concentrated sulfuric acid (59%-98%), vacuum the concentrated sulfuric acid into a high-level bottle, slowly add it to the reactor, and then Add solid potassium hydroxide under stirring, and the weight percentages of added concentrated sulfuric acid, deionized water, and solid potassium hydroxide are 18%, 55% and 20% respectively, and the mixture is formed and white precipitate is precipitated. ;

[0042] (2) adjust the pH value of the mixed solution, and control the pH value at 5.5;

[0043] (3) Heat the mixed solution to 100°C, heat and stir for 2 hours to react; until the reaction is complete, the precipitate is completely separated out;

[0044] (4) Lead the mixed solution and the precipitated out into the stainless steel bucket, let it cool;

[0045] (5) dehydrating the...

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Abstract

The invention belongs to the field of reagents of the inorganic chemical industry and particularly relates to a preparing method of a potassium sulphate reagent. The preparing method comprises the following steps that firstly, concentrated sulfuric acid is diluted into deionized water, solid potassium hydroxide is added to the mixture under stirring, mixed liquid is formed, and sediment is separated out; secondly, the PH value of the mixed liquid is adjusted to 5.1-5.5; thirdly, the mixed liquid is heated to 90 DEG C to 100 DEG C, and heating stirring for reacting is conducted for 2 hours until a reaction is conducted completely and the sediment is separated out completely; fourthly, the mixed liquid and the separated sediment are guided to a stainless steel bucket and cooled; fifthly, the separated sediment is dewatered, then placed into a stainless steel disk and moved to a drying chamber to be dried; sixthly, the drying temperature is controlled within the temperature range from 50 DEG C to 60 DEG C, drying is conducted for 12 hours, and then the finished potassium sulphate reagent can be obtained. By means of the method, the working time is shortened, the temperature of a reaction system is increased through heat releasing of an acid-base neutralization reaction, and a large number of energy sources are saved; acid wrapped base due to crystallization is avoided, the production technology is simplified, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the field of inorganic chemical reagents, in particular to a preparation method of potassium sulfate reagent. Background technique [0002] Reagent Potassium sulfate is used in medicine as a laxative. Potassium sulfate is a chemically neutral, physiologically acidic fertilizer. Potassium sulfate is also used to make alum, glass and potassium carbonate, etc. It is used to make intermediates in the dye industry, as a clarifying agent in the glass industry, as an auxiliary agent in the spice industry, as a general additive in the food industry, and also used in serum protein life. test. Potassium sulfate is widely used in various fields such as environment, medicine, food, agriculture, and chemical industry. [0003] The preparation method of reagent potassium sulfate has at present: [0004] (1) magnesium sulfate conversion method prepares potassium sulfate; [0005] (2) producing potassium sulfate by sulfate type mixed salt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01D5/00
Inventor 刘文忠
Owner TIANJIN YONGDA CHEM REAGENT CO LTD