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Method for treating water leakage of cooler in chloroacetic acid production

A processing method and technology of chloroacetic acid, applied in chemical instruments and methods, preparation of carboxylate, preparation of organic compounds, etc., can solve problems such as affecting the normal reaction of chloroacetic acid, affecting the quality and yield of chloroacetic acid, and achieving guaranteed products. The effect of quality, processing method is simple

Inactive Publication Date: 2010-08-11
HENAN HDF CHEM CO LTD
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  • Description
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Problems solved by technology

[0005] This traditional generation method has the following defects in production: when the cooler leaks, it will affect the normal reaction of chloroacetic acid, cause the generation of dichloroacetic acid and trichloroacetic acid, and seriously affect the quality and yield of chloroacetic acid

Method used

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Embodiment Construction

[0014] Take 100kg of glacial acetic acid and put it into a reaction kettle, add 1.9kg of catalyst (sulfur), heat up to 72°C, pass in chlorine gas to control the temperature and react for 2 hours to make chloroacetic acid liquid, and then crystallize to a finished product. When water leakage is detected in the cooler during production, the catalyst should be replenished in time to ensure normal production; the ratio of water leakage to catalyst replenishment is 1:0.6, that is, when the water leakage is 1kg, 0.6kg of catalyst should be replenished, and so on.

[0015] Because the present invention finds that cooler leaks water and replenishes catalyst in time, therefore guarantees the normal reaction of chlorinated acid in the reactor, stops the generation of dichloroacetic acid and trichloroacetic acid, and guarantees product quality and yield.

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Abstract

The invention discloses a method for treating the water leakage of a cooler in chloroacetic acid production, which comprises the following steps: adding glacial acetic acid and catalyst to react so as to generate chlorine and chloroacetic acid liquid; and carrying out crystallization on the obtained chloroacetic acid liquid so as to get the finished product; meanwhile, the method also comprises the steps of catalyst refilling and water leakage detection. By using the method, the catalyst can be supplemented in time in case of water leakage of the cooler in production, therefore, the normal reaction of the chlorinated acid in a reaction kettle is ensured, and the product quality and yield are ensured.

Description

technical field [0001] The invention discloses a method for treating water leakage of a cooler in the production of chloroacetic acid, which belongs to the technical field of chemical production, and specifically relates to a method for treating the lack of catalyst caused by the water leakage of the cooler in the production of chloroacetic acid. Background technique [0002] Chloroacetic acid products are intermediates of pharmaceuticals and pesticides, and have broad market prospects. The production technology of known chloroacetic acid is: [0003] Glacial acetic acid→catalyst→chlorine gas→-chloroacetic acid liquid→crystallization→finished product. [0004] ↓ Cooling reflux [0005] This traditional generation method has the following defects in production: when the cooler leaks, it will affect the normal reaction of chloroacetic acid, cause the generation of dichloroacetic acid and trichloroacetic acid, and seriously affect the quality and yield o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C53/16C07C51/363
Inventor 徐富娜韩峰宇徐书建张志杰王成雄
Owner HENAN HDF CHEM CO LTD
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