Method and apparatus for separating hydrogen sulfide, and hydrogen production system using same

A separation device and manufacturing system technology, applied in the field of hydrogen manufacturing systems, can solve difficult problems such as renewable energy consumption

Active Publication Date: 2014-07-30
KAWASAKI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in this technique, the amount of water contained in the zeolite has to be maintained at 0.2 to 3.3% by weight, and as conditions for desorbing hydrogen sulfide, a high temperature of 200° C. Difficulty in control and problems with high consumption of renewable energy

Method used

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  • Method and apparatus for separating hydrogen sulfide, and hydrogen production system using same
  • Method and apparatus for separating hydrogen sulfide, and hydrogen production system using same
  • Method and apparatus for separating hydrogen sulfide, and hydrogen production system using same

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Embodiment Construction

[0048] Embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited to the following description.

[0049] The hydrogen sulfide adsorbent used in the present invention can be prepared by supporting a tertiary amine on a porous substance to allow the contact between the hydrogen sulfide adsorbent and the gas to be treated to be carried out in a dry state. Activated carbon and activated alumina can be mentioned as porous substances that can be used in the production of hydrogen sulfide adsorbents. In this embodiment, activated carbon can be preferably used as the porous substance. As tertiary amines, tertiary alkanolamines can be preferably used, for example, triethanolamine, N-methyl-diethanolamine, N,N-dimethyl-monoethanolamine, triisopropanolamine, N-methyl-diethanolamine, Diisopropanolamine and N,N-dimethyl-monoisopropanolamine, among which triethanolamine is preferably used. In this embodiment, triet...

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Abstract

The purpose of the present invention is to provide: a method and an apparatus for separating H2S, each of which is capable of selectively separating only H2S from a gas to be processed, said gas containing CO2 and H2S; and a hydrogen production system which uses this apparatus for separating H2S. A hydrogen production system of the present invention is provided with adsorbent filled towers (11, 21) which are filled with an H2S adsorbent that is obtained by having an activated carbon support triethanolamine, and a mixed gas at about 40 DEG C is supplied thereto via a line (28), said mixed gas containing CO2 and H2S and derived from a synthetic gas. While holding valves (12, 13) open, valves (22, 23) closed, valves (14, 15) closed and valves (24, 25) open, H2S is adsorbed from a gas to be processed in a dry state in the adsorbent filled tower (11) and H2S is desorbed in the adsorbent filled tower (21). In cases where H2S is adsorbed from the gas to be processed in the adsorbent filled tower (21) and H2S is desorbed in the adsorbent filled tower (11), the valves (12, 13, 24, 25) are held closed and the valves (22, 23, 14, 15) are held open.

Description

technical field [0001] The present invention relates to a hydrogen sulfide separation method and device and a hydrogen production system using the device, more particularly to a hydrogen sulfide separation method and device capable of selectively separating hydrogen sulfide from a gas to be treated containing hydrogen sulfide and carbon dioxide, and its use The hydrogen production system of the hydrogen sulfide separation device. Background technique [0002] In a hydrogen production system that produces high-purity hydrogen of 99.9% or higher, synthesis gas obtained by partially burning coal or the like as a raw material in a high-temperature gasifier is produced, and hydrogen is separated from the synthesis gas. In this synthesis gas, in addition to hydrogen as the main component (H 2 ), carbon monoxide (CO), carbon dioxide (CO 2 ), water (H 2 O) also contains hydrogen sulfide (H 2 S). In the process aimed only at producing hydrogen, hydrogen sulfide is separated from...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14C01B3/56C01B17/16C01B31/20C01B32/50
CPCB01D53/02B01D53/0462B01D53/52B01D53/82B01D2252/20431B01D2257/304C01B3/56C01B17/167C01B2203/043C01B2203/0475C01B2203/0485C01B2203/146C01B2203/147C01B32/50Y02C20/40B01D2253/20B01D2253/25B01D2256/16B01D2257/504B01J2219/00C01B3/508
Inventor 中元崇村冈利纪冈岛重伸熊田宪彦广川雅俊庄司恭敏
Owner KAWASAKI HEAVY IND LTD
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