Method for producing potassium diformate by reaction of aminic acid and mixed base

A technology of potassium diformate and mixed alkali, which is applied in the preparation of carboxylate, etc., can solve the problems of production personnel injury, difficult process control, severe process, etc., achieve the effect of low equipment requirements, easy process control, and increase product yield

Inactive Publication Date: 2009-05-20
BEIJING SUNPU BIOCHEM TECH
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Problems solved by technology

[0003] Invention patents CN200410042487 and CN200610043769 respectively introduce the method for preparing potassium diformate by reacting formic acid solution with potassium hydroxide or potassium carbonate and formic acid solution with solid potassium hydroxide. In the latter process, the reaction concentration of formic acid and solid potassium hydroxide is too high, and the process Vigorous, a large amount of heat release, making the process difficult to control, and easy to cause harm to production personnel; the former dilutes the reaction solution to reduce the intensity of the reaction, but after the reaction, because the concentration is too dilute, each batch of reaction needs to be distilled out under reduced pressure. If there is too much water, the product crystallization can be precipitated, which increases the energy consumption virtually

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  • Method for producing potassium diformate by reaction of aminic acid and mixed base

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Embodiment 1

[0013] Embodiment 1: formic acid and potassium hydroxide and salt of wormwood produce potassium diformate

[0014] Take 195.4kg of formic acid solution (≥91%) and add it to a 1000L jacketed enamel reaction kettle with a stirring device, turn on the cooling water, and slowly add 196.4kg of potassium hydroxide solution (≥50%) and 226.8kg of carbonic acid Potassium solution (≥50%) with CO in process 2 The gas is released; then slowly add 455.8kg of formic acid solution, stir, control the temperature at 62±2°C, and react for 4 to 5 hours. Stir to cool down, and crystallize out. The potassium diformate product is obtained by crystallization and drying, and the supernatant is reused for the next batch of reactions.

[0015] Add the centrifuged supernatant to the reaction kettle first, then slowly add 196.4kg of potassium hydroxide, 195.4kg of formic acid, 226.8kg of potassium carbonate, and 455.8kg of formic acid in turn under stirring, stir and control the temperature at 62±2°C, ...

Embodiment 2

[0017] Embodiment 2, formic acid and potassium hydroxide and salt of wormwood produce potassium diformate

[0018] Add 186.3kg of formic acid solution (≥50%) to a 1000L jacketed enamel reaction kettle with a stirring device, turn on the cooling water, and slowly add 248.0kg of potassium hydroxide solution (≥70%) and 154.0kg of potassium carbonate under stirring solid (≥99%), then slowly add 434.7kg of formic acid solution, after the addition is complete, stir, control the temperature at 62±2°C, and react for 4 to 5 hours. The reactant was concentrated in vacuo; the concentrated solution was stirred and cooled until crystals were precipitated. The potassium diformate product is obtained by crystallization and drying, and the supernatant is reused for the next batch of reactions.

[0019] Add the centrifuged supernatant to the reaction kettle first, then slowly add 248.0kg of potassium hydroxide, 186.3kg of formic acid, 154.0kg of potassium carbonate, and 434.7kg of formic acid...

Embodiment 3

[0021] Embodiment 3, formic acid and potassium hydroxide and salt of wormwood produce potassium diformate

[0022] Add 185.3kg of formic acid solution (≥70%) to a 1000L jacketed enamel reaction kettle with stirring device, turn on the cooling water, and slowly add 297.0kg of potassium hydroxide solution or solid (≥50%), 83.7kg Potassium carbonate solid (≥99%), then slowly add 432.4kg of formic acid solution, after the addition is complete, stir, temperature control at 62±2°C, and react for 4 to 5 hours. The reactant was concentrated in vacuo; the concentrated solution was stirred and cooled until crystals were precipitated. Crystallization and drying to obtain potassium diformate product. The mother liquor continues to be recycled to the next batch of reactions.

[0023] Add the centrifuged supernatant to the reaction kettle first, then slowly add 297.0kg of potassium hydroxide, 185.3kg of formic acid, 83.7kg of potassium carbonate, and 432.4kg of formic acid in sequence und...

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Abstract

The invention provides a production method of potassium diformate by the use of methanoic acid and a mixed base, which adopts the methanoic acid and a mixture of potassium carbonate and potassium hydroxide as raw materials. The reaction between the methanoic acid and the mixed base is that a methanoic acid solution with mass percentage concentration of 50 percent to 98 percent reacts with the mixture of solid or liquid potassium carbonate and potassium hydroxide with matching valent weight at 20 DEG C to 95 DEG C for 1 hour to 20 hours. And then the reaction solution obtained is cooled to obtain crystal. After centrifugalization and crystal drying, a product is obtained and a crystal mother liquid is recovered. The method has the advantages of mild reaction conditions, easy-control process, low requirements on equipment, indiscriminately recyclable mother liquid after centrifugalization, and no emission problems of acid, base and other pollutants. The product of potassium diformate, produced by the method, has product yield of over 94 percent and purity of more than 98 percent. The product yield is improved and costs are reduced. The product can be used as a non-antibiotic growth promoting agent to be directly added into pannage.

Description

technical field [0001] The present invention relates to the production method of potassium diformate, especially a kind of method that reacts with formic acid and mixed alkali to produce potassium diformate Background technique [0002] Potassium diformate or potassium diformate is a compound salt formed by potassium formate and formic acid. It is a new type of feed additive developed in recent years. It has the growth-promoting effect of antibiotics. Non-toxic, no residue, used in pig feed, instead of antibiotics as a growth promoter. Adding 0.6% to 1.8% in the pig diet can significantly improve the weight gain effect of pigs. At the same time, it has antibacterial effect and can significantly reduce the occurrence of anaerobic bacteria, lactobacilli, E. coli and Salmonella in the chyme of each section of the digestive tract. content. Improve the resistance of animals to diseases; reduce the number of deaths caused by bacterial infection; effectively inhibit harmful ingre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C53/06C07C53/02C07C51/41
Inventor 胡冬琴裴双秀金瓯罗红平
Owner BEIJING SUNPU BIOCHEM TECH
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