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Method for removing CO2 and H2S out of synthesis gas by utilizing amine-type solid absorbent

An absorbent and synthesis gas technology, applied in separation methods, chemical instruments and methods, gas fuels, etc., can solve the problems of high energy consumption and corrosion of synthesis gas, achieve stable and reliable operation, avoid heat loss, investment and operating costs cheap effect

Inactive Publication Date: 2012-07-18
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a method for utilizing amine solid absorbents to remove CO in syngas 2 and H 2 The S method overcomes the shortcomings of high energy consumption and serious corrosion of wet purification of syngas

Method used

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  • Method for removing CO2 and H2S out of synthesis gas by utilizing amine-type solid absorbent
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  • Method for removing CO2 and H2S out of synthesis gas by utilizing amine-type solid absorbent

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Embodiment 1

[0039] A method to remove CO from syngas by using amine solid absorbent 2 and H 2 The method of S is carried out according to the following steps:

[0040] First, after dedusting, the syngas enters the CO2 containing amine solid absorbent through the first blower 1. 2 Absorption reactor 2, adjust its temperature to 50-60°C, the CO in the syngas 2 Absorbed by amine solid absorbents, the decarburized syngas is separated by the first gas-solid separator 11 and enters the second stage H through the second blower 3 2 S absorbs reactor 4, adjusts its temperature to be 15-20 ℃, and the separated solid matter enters the first solid return device 12, wherein the H 2 S is absorbed by amine solid absorbents. The desulfurized synthesis gas enters the second gas-solid separator 16 for separation, and the separated H 2 S is for subsequent use. absorbed CO 2 、H 2 The amine solid absorbent of S enters the first regeneration reactor 5 and the second regeneration reactor 6 respectively ...

Embodiment 2

[0047] First, through the dust removal, the synthetic gas enters the CO containing amine solid absorbent through the third blower 29. 2 and H 2 S Absorption Reactor 30, CO in Syngas 2 and H 2 S is absorbed by the amine solid absorbent, and the desulfurized and decarbonized synthesis gas is separated by the third gas-solid separator 32 and then enters the third regeneration reactor 34 through the third solid return valve 33, and the regeneration method is to feed CO 2 or H 2 S or water vapor is heated at the same time to increase the temperature of the regeneration reactor, so that the CO absorbed by the amine solid absorbent 2 and H 2 S can be effectively desorbed, so that the amine solid absorbent can be reused, and the regenerated amine solid absorbent returns to the CO through the third gas seal and solid return device 36. 2 and H 2 S absorption reactor 30; the purified syngas from the third gas-solid separator 32 enters subsequent utilization, and the CO from the thi...

Embodiment 3

[0052] First, through the dust removal, the synthetic gas enters the first layer of absorption reaction zone 41 of the absorption reactor containing amine solid absorbent through the fourth blower 40, and the CO in the synthetic gas 2 Absorbed by the amine solid absorbent, the decarburized synthesis gas enters the second layer of absorption reaction zone 43 through the second layer, and the H in the synthesis gas 2 S is absorbed by amine solid absorbents. The syngas after desulfurization and decarburization and the solid absorbent in the first and second layers enter the fourth gas-solid separator 45, the separated syngas enters the subsequent utilization, and the solid absorbent enters the fourth solid absorbent through the fourth solid returner 46. Regeneration reactor 48 performs regeneration treatment. The regeneration method is the introduction of CO 2 or H 2 S or water vapor is heated at the same time to increase the temperature of the regeneration reactor, so that th...

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Abstract

The invention discloses a method for removing CO2 and H2S out of synthesis gas by utilizing an amine-type solid absorbent, belonging to the technical field of environment protection. The method is a technical progress of removing CO2 and H2S out of synthesis gas and biomass generated in coal gasification production or gasified products of other fuels, natural gas and the like by utilizing amine-type solid absorbent prepared from an organic amine loaded porous medium, wherein CO2 and H2S can be removed stage by stage to respectively obtain high-purity CO2 and high-purity H2S and also can be removed in a same reactor. The method has the advantages that process and equipment are simple and compact in integrated design, investment and operation cost is low, and operation is stable and reliable, and CO2 and H2S in the synthesis gas can be separated efficiently with low cost.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for removing CO in syngas by using an amine solid absorbent. 2 and H 2 S method. Background technique [0002] Fossil fuels meet more than 90% of the world's energy needs, while the burning of fossil fuels is also a greenhouse gas CO 2 one of the main sources of . In order to cope with the increasingly serious environmental problems, the reduction of CO in the process of fossil fuel utilization 2 emission has become a very important task. The coal-based energy system and chemical system based on coal gasification can well solve the problems of efficiency and pollution in the process of coal conversion. Coal gasification technology is the core technology for efficient and clean utilization of coal, and its gasification products can be used for fuel gas (IGCC power generation, civil / industrial gas), production of chemical products (fertili...

Claims

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Application Information

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IPC IPC(8): C10L3/10B01D53/83B01D53/62B01D53/52B01D53/96
CPCY02C10/04Y02C20/40
Inventor 李振山蔡宁生赵文瑛王丽香
Owner TSINGHUA UNIV
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