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Preparation method of potassium diformate

A technology of potassium diformate and potassium formate, which is applied in the field of preparation of potassium diformate, can solve the problems of small crystal particles, many impurities, and high energy consumption, and achieve the effects of good crystal form, high purity, and low energy consumption

Inactive Publication Date: 2018-03-09
SKF BEIJING BIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above method improves the comprehensive yield and the overall yield, it is accompanied by high energy consumption, many impurities in the product, small crystal particles of the product and easy deliquescence

Method used

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  • Preparation method of potassium diformate
  • Preparation method of potassium diformate
  • Preparation method of potassium diformate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The invention provides a kind of preparation method of potassium diformate, realizes according to the following steps:

[0043] Step 1: Reagent A selects potassium hydroxide, reagent B selects formic acid, and reagent A and reagent B react under alkaline to weakly acidic conditions to generate potassium formate, and concentrate;

[0044] Its reaction equation is as follows:

[0045] K + +HCOO - →HCOOK

[0046] Step 2: Reagent C selects formic acid, and reacts potassium formate and reagent C under acidic conditions to generate potassium diformate;

[0047] Its reaction equation is as follows:

[0048]

[0049] Further, the substance ratio of potassium formate and formate ions in step 2 is 1:0.9˜1:1.5.

[0050] Further, in the concentration process described in step 1, the temperature of the distilled water is controlled at 60-110° C., and the pressure (gauge pressure) of the distilled water is controlled at -0.1-0 MPa.

[0051] Further, in the process of distill...

Embodiment approach

[0054] The specific implementation is as follows:

[0055]

[0056]

[0057]

Embodiment 2

[0059] The invention provides a kind of preparation method of potassium diformate, realizes according to the following steps:

[0060] Step 1: Reagent A selects potassium carbonate, reagent B selects formic acid, and reagent A and reagent B react under alkaline to weakly acidic conditions to generate potassium formate, and concentrate;

[0061] Its reaction equation is as follows:

[0062] K + +HCOO - →HCOOK

[0063] Step 2: Reagent C selects formic acid, and reacts potassium formate and reagent C under acidic conditions to generate potassium diformate;

[0064] Its reaction equation is as follows:

[0065]

[0066] Further, the substance ratio of potassium formate and formate ions in step 2 is 1:0.9˜1:1.5.

[0067] Further, in the concentration process described in step 1, the temperature of the distilled water is controlled at 60-110° C., and the pressure (gauge pressure) of the distilled water is controlled at -0.1-0 MPa.

[0068] Further, in the process of distillin...

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Abstract

The invention relates to the field of chemical engineering preparation synthesis, in particular to a preparation method of potassium diformate. The method comprises the following steps of 1, performing reaction on a reagent A containing potassium ions and a reagent B containing formate ions under the conditions from basic conditions to weak acid conditions to produce potassium formate; 2, performing reaction on potassium formate and a reagent C containing formate ions under the acid conditions to produce potassium diformate. The preparation method of potassium diformate has the beneficial effects that the energy consumption is low; the yield is high; the product purity is high; the product crystal form is good; the specific surface area is small; deliquescence cannot easily occur.

Description

technical field [0001] The invention relates to the field of chemical preparation synthesis, in particular to a preparation method of potassium diformate. Background technique [0002] Potassium diformate is a novel feed additive used as an alternative to antibiotic growth promoters. Potassium diformate was approved by the European Union in 2001, becoming the first non-antibiotic feed additive approved by the European Union to replace antibiotic growth promoters. [0003] Diformic acid is an organic acid salt, which is a dimer associated with formic acid and potassium formate through hydrogen bonds. At present, the methods for synthesizing diformic acid mainly include: formic acid-potassium oxide method, formic acid-potassium carbonate method, formic acid-potassium hydroxide method, methyl formate-potassium carbonate or potassium hydroxide method. The above methods are all realized by using one-stage method or its improvement. The reaction equation utilized is as follows:...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/41C07C53/06
CPCC07C51/412C07C53/06
Inventor 张冬梅陈守慧郭衍涛郝永任徐敬龙胡中凯赵笑项晨
Owner SKF BEIJING BIO TECH
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