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Methods for purifying and comprehensively utilizing hydrogen sulfide byproduct during production of carbon disulfide by methane method

A carbon disulfide and purification method technology, applied in the direction of hydrogen sulfide, etc., can solve the problems of large number of equipment, high investment cost, unstable operation, etc., and achieve the effect of reducing the number of equipment, reducing leakage points, and increasing safety

Active Publication Date: 2011-08-17
吉林三源化工有限公司
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  • Abstract
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Problems solved by technology

[0010] The purification method of the present invention adopts a brand new process of first distillation, then two-stage condensation, and finally rectification purification, which overcomes the large number of equipment, unstable operation, and investment in the method of pressurized condensation, distillation and rectification in the prior art. Defects such as high cost have achieved good results in actual production

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  • Methods for purifying and comprehensively utilizing hydrogen sulfide byproduct during production of carbon disulfide by methane method
  • Methods for purifying and comprehensively utilizing hydrogen sulfide byproduct during production of carbon disulfide by methane method
  • Methods for purifying and comprehensively utilizing hydrogen sulfide byproduct during production of carbon disulfide by methane method

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Embodiment Construction

[0039] The product obtained by the reaction of natural gas with methane and ethane as the main components and sulfur is first desulfurized, and then the mixed material after sulfur removal is passed into the hydrogen sulfide distillation tower A-401 for CS 2 and H 2 Preliminary isolation of S. The bottom distillate is CS 2 The product, the overhead distillate is H with a purity of 93-97% 2 S gas.

[0040] refer to figure 1 As shown, the gas phase mixture obtained from the top of the hydrogen sulfide distillation column A-401 is partially condensed in the primary condenser H-410, and the liquid phase H 2 S flows into the inlet of the refined feed pump P-405A / B located at the bottom of the refined feed tank A-405 through the refined feed pump P-405A / B, and the gas phase flows into the final condenser H-411 for further condensation, and all condensed materials Sent to the refining feed tank A-405 to separate inert gases such as methane and nitrogen, wherein the condensed liq...

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Abstract

The invention relates to a method for purifying a byproduct, namely hydrogen sulfide, during production of carbon disulfide by a methane method, and a method for comprehensively utilizing the byproduct. The method for purifying the byproduct comprises the following steps of: initially separating a mixture of desulfured products through a hydrogen sulfide distillation tower, and further purifying a gaseous phase product; performing two-stage condensation on a gaseous phase distillate at the top of the hydrogen sulfide distillation tower through a primary condenser and an ultimate condenser; and further purifying by using a refining feeding pot and a hydrogen sulfide refining tower so as to finally obtain the high-purity hydrogen sulfide. By adoption of constant-pressure two-level condensation, a lower condensation temperature can be reached to contribute to separation and elimination of inert gases in acidic gases, and the number of sets of equipment is decreased, the safety is enhanced and the equipment investment is reduced at the same time; meanwhile, by the methods, the minimum emission of waste gases and waste liquid during whole purification is realized, so the method is clean and environment-friendly.

Description

technical field [0001] The invention relates to a method for purifying by-product hydrogen sulfide in a methane method carbon disulfide production process and a method for comprehensively utilizing the by-product. Background technique [0002] The methane method is currently a relatively mature and widely used method for producing carbon disulfide. Its main process is: use natural gas with methane as the main component to react with sulfur to synthesize carbon disulfide, and the generated by-product hydrogen sulfide gas is converted and recovered through the Claus device. Sulfur is recycled as a raw material for carbon disulfide synthesis. A small amount of recovered hydrogen sulfide is converted into sulfur dioxide by an incinerator. This treatment method will not only cause some pollution to the air, but also a waste of hydrogen sulfide resources. [0003] In the prior art, there are few studies on the purification of hydrogen sulfide from the product mixture obtained by...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B17/16C01B31/26
Inventor 李刚
Owner 吉林三源化工有限公司
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