Ethyl thioctic acid salt hot hydrolyzate cooling apparatus

A technology of ethyl lipoic acid and cooling equipment, which is applied in the direction of heat exchanger types, indirect heat exchangers, lighting and heating equipment, etc., can solve the problems of long cooling time and production efficiency constraints, and achieve the improvement of reaction cooling speed and improvement The effect of production efficiency

Inactive Publication Date: 2008-12-31
SUZHOU FUSHILAI PHARMA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Practice has proved that the cooling time of jacket cooling is long, which restricts the improvement of production efficiency

Method used

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  • Ethyl thioctic acid salt hot hydrolyzate cooling apparatus
  • Ethyl thioctic acid salt hot hydrolyzate cooling apparatus

Examples

Experimental program
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Embodiment Construction

[0012] See also Fig. 1 and Fig. 2, have provided the known common reactor 1 in the prior art, this reactor 1 is equipped with agitator 12 and is formed with jacket 11, and the side upper part of jacket 11 is extended and is used for introducing A refrigerant inlet port 111 for the refrigerant is provided, and a refrigerant outlet port 112 for leading out the refrigerant is extended to the lower side of the jacket 11 . The feed inlet at the top of the reactor 1 is connected with the pipeline 2131 of the precooling mechanism 2 described in detail below, so that the lipoic acid ethyl ester thermal hydrolyzate after the precooling mechanism 2 is precooled by the pipeline 2131 is introduced into the In the still body (in the still cavity) of the reaction kettle 1, the thermal hydrolysis solution of ethyl lipoic acid in the kettle body is cooled by the aforementioned refrigerant. Introduce the acidification liquid to carry out the acidification reaction. After the acidification reac...

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Abstract

The invention relates to a cooling device for lipoic acid ethyl ester hot hydrolysate, which belongs to the technical field of the pharmaceutical chemical product production device. The cooling device for lipoic acid ethyl ester hot hydrolysate comprises a reaction kettle, which is provided with a clamping sleeve and a stirrer, and the cooling device for lipoic acid ethyl ester hot hydrolysate is characterized in that the cooling device also comprises a pre-cooling mechanism, which is coupled with the reaction kettle. The cooling device for lipoic acid ethyl ester hot hydrolysate has the advantages that the pre-cooling mechanism is coupled on the reaction kettle, therefore, the lipoic acid ethyl ester hot hydrolysate is cooled through the pre-cooling mechanism at first, and afterward, the lipoic acid ethyl ester hot hydrolysate is cooled through the reaction kettle, thereby the reaction cooling speed is improved, thus to be favorable for improving the production efficiency.

Description

technical field [0001] The invention belongs to the technical field of pharmaceutical and chemical product production devices, and in particular relates to a cooling device for thermal hydrolyzate of ethyl lipoic acid. Background technique [0002] In the production process of lipoic acid, there is a hydrolysis reaction. After the hydrolysis reaction in the ethyl lipoic acid hydrolysis reaction device, the thermal hydrolysis solution of ethyl lipoic acid is obtained at a temperature of about 85 ° C. The thermal hydrolysis solution of ethyl lipoic acid enters the ethyl lipoic acid hydrolysis solution. The ester thermal hydrolyzate cooling device is cooled, and when it is cooled to about 10°C, hydrochloric acid is added dropwise for acidification reaction to generate crude lipoic acid, which is sent to the subsequent process for processing to obtain fine lipoic acid. [0003] In the prior art, directly adopt the reaction kettle with jacket and band stirrer as the cooling devic...

Claims

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Application Information

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IPC IPC(8): F28D9/04C07D339/04
Inventor 王永兴谭雪良喻华育
Owner SUZHOU FUSHILAI PHARMA CO LTD
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