Method for preparing potassium benzate

A technology of potassium benzoate and a manufacturing method, which is applied in the preparation of carboxylate and other directions, can solve the problems of the production technology level, the equipment level is backward, the pollution is serious, the fluidity is poor, etc., and the fluidity is good, the dust is less, and the pollution is small. Effect

Inactive Publication Date: 2006-07-05
DONGXIN FINED CHEM PLANT TENGZHOU CITY
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  • Abstract
  • Description
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Problems solved by technology

The appearance of the potassium benzoate product produced by this manufacturing method is white powder, and the product has a lot ...

Method used

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  • Method for preparing potassium benzate
  • Method for preparing potassium benzate

Examples

Experimental program
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Embodiment 1

[0010] A kind of potassium benzoate manufacture method, such as figure 1 Shown, wherein include adding benzoic acid in potassium hydroxide solution with conventional method and carry out neutralization reaction to obtain common potassium benzoate reaction solution, carry out insulation decolorization to potassium benzoate reaction solution with conventional method, to the reaction solution after insulation decolorization with Conventional method carries out press filtration to obtain colorless clear and transparent potassium benzoate solution; This manufacture method also comprises atomization granulation process; The atomization granulation process comprises carrying out mist to the colorless clear and transparent potassium benzoate solution after press filtration In the common prilling tower, a certain amount of powdery potassium benzoate is used as the crystal nucleus, and the powdery potassium benzoate crystal nucleus is blown with hot air under the condition that the temp...

Embodiment 2

[0013] The potassium benzoate reaction solution after the pressure filtration in embodiment 1 is atomized, and its atomization process is: the potassium benzoate reaction solution after the pressure filtration among the embodiment 1 is blown into mist by compressed air.

Embodiment 3

[0015] The pressure of the compressed air in Embodiment 2 may be 0-0.6 MPa. In this embodiment, the pressures of the compressed air may be 0 MPa, 0.3 MPa, and 0.6 MPa respectively.

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Abstract

This invention relates to a potassium benzoate preparation method with the advantages of few dusts, high flow velocity, and little pollution and good product morphology. This preparation method includes an atomization-granulation technique which consists of following steps: the colorless and transparent pressure-filtrated potassium benzoate solution is atomized, and powdery potassium benzoate which serves as crystal nuclear is blown with hot winds in granulation tower at a temperature of 40~85 deg.C to contact with the atomized potassium benzoate liquid for granulation.

Description

technical field [0001] The present invention relates to potassium benzoate used for food preservatives, in particular to the appearance geometry of potassium benzoate and its manufacture method. Background technique [0002] Benzoic acid and its salts are food preservatives widely used at home and abroad, and its main products are benzoic acid, sodium benzoate, potassium benzoate, calcium benzoate, etc. The manufacture method of the potassium benzoate product of current production is as figure 2 As shown, add distilled water to the enamel reaction tank with a stirrer, and then slowly add potassium hydroxide into it. After the potassium hydroxide is completely dissolved, slowly add benzoic acid. At this time, the enamel reaction tank continues to stir. The neutralization reaction between potassium oxide and benzoic acid is an exothermic reaction. When adding benzoic acid, control the speed of adding benzoic acid so that the reaction temperature does ...

Claims

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Application Information

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IPC IPC(8): C07C63/08C07C51/41
Inventor 陈铭深胡孝东郝青云
Owner DONGXIN FINED CHEM PLANT TENGZHOU CITY
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