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Tubular fixed bed reactor for methanethiol

A fixed-bed reactor and tube-and-tube technology, which is applied in chemical instruments and methods, chemical/physical processes, etc., can solve problems such as difficult maintenance and reaction gas cannot be cooled in time, and achieve the effect of improving yield

Inactive Publication Date: 2019-01-25
西安航天华威化工生物工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the limitation of the internal structure of the traditional methyl mercaptan reactor, the reaction gas cannot be cooled in time, and the maintenance is difficult

Method used

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  • Tubular fixed bed reactor for methanethiol
  • Tubular fixed bed reactor for methanethiol
  • Tubular fixed bed reactor for methanethiol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The reactant gas enters the upper pipe box 3 from the reactant gas inlet 1 through the gas distributor 2, and the reactant gas enters each reaction tube 6 evenly, reacts and releases heat under the action of the catalyst, and the catalyst is supported by the catalyst support spring 12 In the reaction tube 6 , the reactant gas after the reaction leaves the reaction tube 6 and is discharged from the reactant gas outlet 11 at the lower part of the lower tube box 10 .

Embodiment 2

[0033] The reactant gas enters the lower tube box 10 from the reactant gas inlet 1 through the gas distributor 2, and the reactant gas enters each reaction tube 6 evenly, reacts and releases heat under the action of the catalyst, and the catalyst is supported by the catalyst support spring 12 In the reaction tube 6 , the reactant gas after the reaction leaves the reaction tube 6 and is discharged from the reactant gas outlet 11 on the upper part of the upper tube box 3 .

[0034] During operation, the shell-side heat-conducting medium circulates from bottom to top, flows into the shell-side cylinder 7 from the nozzle of the lower ring chamber 8, flows countercurrently upwards, exchanges heat with the reaction tube 6, and finally flows out from the nozzle of the upper ring chamber 5 and moves out heat of reaction.

[0035] The catalyst supporting spring 12 is a composite spring, which is screwed into the reaction tube 6 and clamped tightly with the tube wall to ensure that the ...

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Abstract

The invention relates to a tubular fixed bed reactor for methanethiol. The reactor comprises an upper tube box, a shell pass cylinder body and a lower tube box from top to bottom, wherein the shell pass cylinder body is internally provided with an upper tube plate, reaction tubes and a lower tube plate, and two ends, i.e., an upper end and a lower end, of the reaction tube are respectively in sealing connection with the upper tube plate and the lower tube plate; a lower tube of the reaction tube is internally provided with a catalyst support spring. The reactor provided by the invention can conveniently be filled with a catalyst, when a single reaction tube leaks, the reaction tube can be directly blocked, the catalyst does not require to be completely dismantled, the equipment is convenient to maintain in a later period, and the maintenance cycle is shortened.

Description

technical field [0001] The invention relates to a gas-phase chemical reaction device, in particular to a methyl mercaptan tubular fixed-bed reactor. Background technique [0002] Methyl mercaptan is an important chemical raw material, which can be used to synthesize organic synthesis intermediates such as pesticides, medicines, and feedstuffs. At present, there are several methods for synthesizing methyl mercaptan: thiourea-dimethyl sulfate method, methyl chloride-alkali sulfide method, methanol-hydrogen sulfide method. [0003] Due to the limitation of the internal structure of the traditional methyl mercaptan reactor, the reaction gas cannot be cooled in time, and maintenance is difficult. Combined with the current domestic chemical industry and petroleum refining, a large amount of hydrogen sulfide gas is discharged, causing serious pollution to the environment, and the methanol market is seriously saturated. The methanol-hydrogen sulfide method has become a research hot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/06
CPCB01J8/067B01J2208/00256
Inventor 邰向阳车怀智杨鹏李然付林李浩张举莉杜克英
Owner 西安航天华威化工生物工程有限公司
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