Method and system for preparing xanthate by slurry method

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United States of America Patent

PATENT NO 12054452
APP PUB NO 20200392080A1
SERIAL NO

17005324

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Abstract

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A method for preparing xanthate by a slurry method includes steps of: adding a mixture of dichloromethane and carbon disulfide as a reaction solvent in a slurry reactor, and then adding alcohol and caustic alkali to react with carbon disulfide under less than 1 atm to remove heat released by the reaction by evaporating the solvent; performing vacuum distillation after the reaction to remove the solvent and water, so as to obtain the xanthate; transporting the xanthate to a granulation equipment for granulating, and then drying in a drying equipment to obtain a product. The method is performed in a system formed by a reaction equipment, a solvent recovery equipment, the granulation equipment, and the drying equipment, wherein a main equipment of the reaction system is a slurry reactor. The method has advantages of high efficiency, low energy consumption, good safety, environmental friendliness, convenient operation and the like.

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Patent Owner(s)

Patent OwnerAddress
CENTRAL SOUTH UNIVERSITYYUELU DISTRICT CITY HUNAN PROVINCE 410083 CHANGSHA LUSHAN ROAD NO 932 CHANGSHA CITY HUNAN PROVINCE 410083

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ma, Xin Hunan, CN 84 694
Wang, Shuai Hunan, CN 194 423
Zhong, Hong Hunan, CN 30 927

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