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Preparation method for carbon bisulfide

A carbon disulfide and sulfur technology, which is applied in the field of compound preparation, can solve the problems of shortening and easily coking furnace tube life, increasing production costs, etc., and achieve the effects of prolonging life, reducing equipment maintenance costs, and saving production costs.

Active Publication Date: 2008-07-23
SHANGHAI BAIJIN CHEM GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a carbon disulfide production method in order to solve the problems of shortened furnace tube life and increased production cost caused by easy coking in the reaction furnace tube in the existing carbon disulfide preparation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1: The static mixer is arranged outside the tubular heating furnace. After the raw natural gas sent by the natural gas buffer tank is accurately measured, it is heated to 150°C in the preheating section of the tubular heating furnace, and then mixed with an excess of 5% sulfur in the The outside of the furnace is mixed by a static mixer and then enters the heating reaction section of the tubular heating furnace. Partial reactions are carried out at a temperature of 550°C and a pressure of 0.3Mpa. The mixed gas generated by the reaction enters the adiabatic reactor after exiting the heating furnace. Sulfur and natural gas continue to react in the adiabatic reactor, and the mixed gas from the adiabatic reactor is separated after the reaction.

Embodiment 2

[0012] Example 2: The static mixer is installed inside the tubular heating furnace. After the raw natural gas sent by the natural gas buffer tank is accurately measured, it enters the preheating section of the single-row horizontal tube tubular heating furnace and is heated to 400°C, and then mixed with an excess of 15 % sulfur in the furnace is mixed by a static mixer and then enters the heating reaction section of the tubular heating furnace. Partial reaction is carried out at a temperature of 800°C and a pressure of 1.0Mpa. The reaction gas sulfur and natural gas continue to react in the adiabatic reactor. After the reaction, the mixed gas from the adiabatic reactor is separated.

Embodiment 3

[0013] Example 3: The static mixer is installed inside the tubular heating furnace. After the raw natural gas sent by the natural gas buffer tank is accurately measured, it enters the preheating section of the single-row horizontal tube tubular heating furnace and is heated to 300 ° C, and then mixed with an excess of 10 % sulfur in the furnace is mixed by a static mixer and then enters the heating reaction section of the tubular heating furnace. Partial reaction is carried out at a temperature of 600°C and a pressure of 0.8Mpa. The mixed gas generated by the reaction enters the adiabatic reactor after leaving the heating furnace. The unreacted gas sulfur and natural gas continue to react in the adiabatic reactor, and after the reaction, the mixed gas from the adiabatic reactor is separated.

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Abstract

The invention discloses a preparing method of carbon disulphide, which is characterized by the following: controlling the temperature of natural gas and sulphur at 550-800 deg.c at 0.3-1.0Mpa; reacting to produce carbon disulphide; blending natural gas and liquid sulphur in the heating segment of reacting furnace pipe through static blender.

Description

technical field [0001] The invention relates to a preparation method of a compound containing carbon and sulfur, in particular to a preparation method of carbon disulfide. Background technique [0002] Carbon disulfide is an important chemical raw material, which has a wide range of uses in industry, and is widely used in production departments such as man-made fibers, cellophane, pesticides, carbon tetrachloride, rubber, and petroleum refining. In the process of preparing carbon disulfide by reacting hydrocarbons in natural gas with sulfur, different problems will occur, but the most frequent problems are coking and clogging of process pipelines, tubular heating furnaces, and adiabatic reactors. In the existing preparation process, natural gas and liquid sulfur are fed into the heating reaction furnace tube respectively, and the gas and liquid flow separately. The upper part of the furnace tube is gas, and the lower part is liquid. In this flow state, it is most likely to c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/26
Inventor 孔庆然
Owner SHANGHAI BAIJIN CHEM GROUP
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