Sulfur putting method in thionyl chloride refining process

A technology of thionyl chloride and sulfur, applied in chemical instruments and methods, thionyl chloride, inorganic chemistry, etc., can solve problems such as environmental pollution and waste of thionyl chloride, and achieve high precision of finished products, environmental protection and process operation simple effect

Inactive Publication Date: 2016-08-03
XINXIANG RUICHENG TECH DEV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Thionyl chloride (SOCl2) is an important fine chemical product and an intermediate in the synthesis of many chemicals. Because it has strong chlorination and acid chlorination capabilities, it can significantly improve the utilization of some expensive raw materials; as chlorine Thionyl chloride is mainly used in pesticides, medicines, dyes and other industries; it can also be used as a chlorination agent for the synthesis or replacement of alcohols, acid anhydrides, and nitro compounds, and it can also be used in ring-closing reactions Chloroacylating agents synthesized from compounds such as thiazoline, pyrrolidine, and amides,

Method used

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Embodiment

[0017] A sulfur oxychloride refining process of sulfur injection method, the steps of the sulfur injection method are as follows:

[0018] Step 1: select sulfur: select massive sulfur for standby;

[0019] Step 2: Crushing: Put the sulfur block selected in step 1 into a pulverizer to pulverize;

[0020] Step 3: Feeding: the pulverized sulfur obtained in step 2 is sent into the molten sulfur tank by a conveyor belt;

[0021] Step 4: Heating molten sulfur: set the temperature of the sulfur melting tank to 140°C, heat the sulfur melting tank to prepare liquid sulfur, and collect and process the steam at the same time;

[0022] Step 5: Crude sulfur filtration: sending the liquid sulfur prepared in step 4 into a sulfur filter for filtration to prepare pure liquid sulfur;

[0023] Step 6: Thionyl chloride refining batching: The pure liquid sulfur prepared in step 4 and the thick sulfur oxychloride are fed into a batching tank and mixed to prepare a mixed solution for rectification...

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Abstract

The invention relates to a method for adding sulfur in the refining process of thionyl chloride. The water and impurities in the sulfur are removed through sulfur selection, pulverization, feeding, heating and melting sulfur, filtration of crude sulfur, and thionyl chloride refining and batching. The reaction of water and thionyl chloride to generate waste gas can be avoided, and the precision of the product can be improved at the same time, and the invention has the advantages of simple process operation, high precision of the finished product, resource saving and environmental protection.

Description

technical field [0001] The invention belongs to the technical field of refining thionyl chloride, and in particular relates to a sulfur feeding method in the refining process of thionyl chloride. Background technique [0002] Thionyl chloride (SOCl2) is an important fine chemical product and an intermediate in the synthesis of many chemicals. Because it has strong chlorination and acid chlorination capabilities, it can significantly improve the utilization of some expensive raw materials; as chlorine Chlorination reagents and acyl chloride reagents, thionyl chloride is mainly used in pesticides, medicines, dyes and other industries; it can also be used as a chlorination agent for the synthesis or replacement of alcohols, acid anhydrides, and nitro compounds, and can also be used in ring-closing reactions Chloroacylating agents synthesized from compounds such as thiazoline, pyrrolidine, and amides, and catalysts in some organic synthesis reactions, etc., also use a large amou...

Claims

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Application Information

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IPC IPC(8): C01B17/45C01B17/02
CPCC01B17/4584C01B17/0221C01B17/0232
Inventor 白志臣
Owner XINXIANG RUICHENG TECH DEV
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