A kind of preparation method of gas phase catalytic synthesis sulfur dichloride

A technology for gas-phase catalytic synthesis of sulfur dichloride and sulfur dichloride, applied in the direction of sulfur and halogen compounds, etc., can solve the problems of large amount of three wastes, small content, low content, etc., and achieves simple operation, high conversion rate, and environmental reduction. The effect of pollution
CN104098072BActive Publication Date: 2015-11-04湖南海利常德农药化工有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
湖南海利常德农药化工有限公司
Publication Date
2015-11-04

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Abstract

The invention discloses a preparation method for synthetizing sulfur dichloride through gas phase catalysis. Granular activated carbon supported by ferric chloride (FeCl3 / C) is taken as a catalyst, disulfur dichloride and chorine are taken as a reaction raw material and a carrier gas, a vaporized gas mixture of the disulfur dichloride and the chorine enters a fixed bed catalysis tubular reactor, the sulfur dichloride is prepared with a continuous gas phase catalysis method, the sulfur dichloride produced through the reaction is cooled by a condenser to be collected, and the excess chlorine is recycled. The sulfur dichloride product obtained with the method is free of catalyst residues, distillation is not required, and the content of sulfur dichloride in the product is higher than 90%. The excess chlorine is recycled. The preparation method is simple to operate, continuous, stable, high in conversion rate and free of waste gas and waste liquor emissions, so that the environmental pollution is reduced.
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Description

technical field

[0001] The invention relates to a preparation method of sulfur dichloride. Background technique

[0002] Sulfur dichloride is an important inorganic chemical product, and its molecular structure is:

[0003] Cl-S-Cl

[0004] It is widely used in organic synthesis, producing acid anhydrides or chlorides of organic acids, additives for high-pressure lubricants and cutting oils, and processing agents for vegetable oils (such as corn oil and soybean oil). It can also be used as a disinfectant and fungicide.

[0005] CN95110380 discloses a synthesis method of sulfur dichloride, which uses sulfur and chlorine to synthesize disulfur dichloride at 30-80°C, and then controls the reaction temperature to 30-80°C to pass chlorine gas into the disulfur dichloride liquid Sulfur dichloride gas is produced in the The reaction rate of this method is slow, and the yield has not been reported.

[0006] CN91104832 discloses a synthesis method of sulfur dichloride, which use...

Claims

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