Device and method for absorbing carbon disulfide in hydrogen sulfide gas by using solvent

A carbon disulfide and solvent absorption technology, applied in hydrogen sulfide, chemical instruments and methods, separation methods, etc., can solve the problems of long production cycle, unsuitable for industrial production, high energy consumption, etc., and achieve good results

Active Publication Date: 2010-12-15
NINGXIA UNISPLENDOUR TIANHUA METHIONINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of this method are: complex equipment, long production cycle, high energy consumption, high cost, small scope of application, inconvenient popularization and application, and not suitable for industrial production

Method used

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  • Device and method for absorbing carbon disulfide in hydrogen sulfide gas by using solvent
  • Device and method for absorbing carbon disulfide in hydrogen sulfide gas by using solvent
  • Device and method for absorbing carbon disulfide in hydrogen sulfide gas by using solvent

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 As shown, a device for absorbing carbon disulfide in hydrogen sulfide gas with a solvent mainly includes an absorption tower 1, a desorption tower 2, a gas-liquid separator 3, 4, a heat exchanger 5, a cooler 6, a heater 7, a pump 8, 9 and valves, etc.

[0032] The absorption tower 1 is composed of upper and lower sections, which are thick at the bottom and thin at the top, so as to improve absorption efficiency and save energy. A through hole is arranged on the lower side of the lower section of the absorption tower 1, and the through hole communicates the inner cavity of the lower section of the absorption tower 1 with the mixed gas generating device through the first flow control valve with a flow meter, the first three-way pipe and the connecting pipe . The mixed gas enters the lower part of the absorption tower 1 through the connecting pipe through the first flow control valve with a flow meter and the straight pipe of the first three-way pipe, an...

Embodiment 2

[0038] A kind of concrete steps of the method for absorbing carbon disulfide in hydrogen sulfide with solvent are as follows:

[0039] (1) absorption

[0040] CS 2 The initial concentration is 10%, and the mixed gas whose pressure is 0.3MPa is input from the bottom side of the lower section of the absorption tower 1, and flows from bottom to top in the absorption tower 1. The paraffin oil solvent placed in the analysis tower 2 is pressurized to 0.35Mpa through the circulation pump 8, and is input from the through hole on the upper side of the lower section of the absorption tower 1. After passing through the liquid distributor, it is sprayed from top to bottom in the lower section of the absorption tower 1. shower. The circulating rich liquid from the lower part of the analysis tower 2 is input from the through hole on the upper side of the upper part of the absorption tower 1, and is sprayed from top to bottom in the absorption tower 1 after passing through the liquid distr...

Embodiment 3

[0047] A kind of concrete steps of the method for absorbing carbon disulfide in hydrogen sulfide with solvent, with embodiment 2, wherein:

[0048] In the (1) step, the paraffin oil solvent: the mass ratio of the mixed gas is 1: 2.4.

[0049] In step (2), the lean liquid is cooled to 33° C. through heat exchanger 5 .

[0050] In step (3), the gas after analysis is cooled to 8° C. through cooler 6 .

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PUM

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Abstract

The invention discloses a device and a method for absorbing carbon disulfide in hydrogen sulfide gas by using solvent, which belong to the technical field of hydrogen sulfide gas and carbon disulfide preparation. The device of the invention mainly comprises an absorption tower, an analytical tower, a gas-liquid separator, a heat exchanger, a cooler, a heater, a pump, a valve and the like; and the method is to produce H2S and CS2 products by using the device and absorption and separation in a transfer mass dynamic control process and solvent. The device of the invention has a simple structure and low cost; and the method of the invention has the advantages of good absorption/separation effect, full utilization of resources, reduced energy consumption, low production cost and convenient popularization and application, wherein the absorption rate of CS2 is up to 99 percent. The device and the method of the invention can be widely applied to separation of H2S gases and CS2 in industrial production, particularly the separation of CS2 from H2S gases in the process of preparing CS2 by using natural gases.

Description

technical field [0001] The invention belongs to the technical field of removing carbon disulfide in hydrogen sulfide gas, and in particular relates to a device and a method for separating carbon disulfide from hydrogen sulfide gas in the process of utilizing natural gas to prepare carbon disulfide gas. Background technique [0002] Hydrogen sulfide gas generally exists in various production processes and in nature as a chemical reaction or natural decomposition product of protein, among which, the synthesis of methionine is one of its uses. At present, the industrial production of methionine generally adopts the methionine condensation hydrolysis method, that is, the reaction of methyl mercaptan and acrolein to generate methionine, and the methionine is then condensed and hydrolyzed to obtain methionine. Methyl mercaptan is often formed from methanol and hydrogen sulfide gas in molybdic acid / Al 2 o 3 Synthesized under the action of catalyst. At present, the common prepara...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/18C01B17/16C01B31/26
Inventor 董立春李文平郑道敏姚如杰王攀李海旺魏顺安谭世语
Owner NINGXIA UNISPLENDOUR TIANHUA METHIONINE CO LTD
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