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A synthesis gas purification method, device and application combining sulfur-tolerant shift and circulating fluidized bed thermal desulfurization

A circulating fluidized bed and synthesis gas purification technology, which is applied in the direction of chemical instruments and methods, separation methods, and dispersed particle separation, can solve the problems of difficult regeneration of adsorbents, lower thermal efficiency of downstream synthesis gas utilization, and small processing capacity.

Active Publication Date: 2017-08-25
SHANGHAI INT ENG CONSULTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Clearly, such cooling, heat recovery and associated processing would result in a lower thermal efficiency of downstream syngas utilization
[0005] The method of removing sulfur compounds in the gas by using a solid adsorbent in a fixed bed has the disadvantages of small processing capacity and difficult regeneration of the adsorbent

Method used

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  • A synthesis gas purification method, device and application combining sulfur-tolerant shift and circulating fluidized bed thermal desulfurization
  • A synthesis gas purification method, device and application combining sulfur-tolerant shift and circulating fluidized bed thermal desulfurization
  • A synthesis gas purification method, device and application combining sulfur-tolerant shift and circulating fluidized bed thermal desulfurization

Examples

Experimental program
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Effect test

Embodiment 1

[0158] see figure 1 , the figure shows a synthesis gas purification device combining sulfur-resistant shift and circulating fluidized bed thermal desulfurization, including water quenching washing device 100, heat exchangers 210, 220, heat recovery device 1100, sulfur-resistant shift reaction System 300, adsorption reactor 400 of circulating fluidized bed, regeneration reactor 500 of circulating fluidized bed, filters 610, 620, regenerable NH removal 3 / HCN device 700, mercury and chloride removal device 800, cooling device 900.

[0159] The water quenching and washing device 100 has a crude synthesis gas input port 110 and a crude synthesis gas output port 120. The crude synthesis gas input port 110 of the water quenching and washing device 100 is connected to a coal gasification device 1000 through a crude synthesis gas delivery pipeline 1, The coal gasification device 1000 is a coal-water slurry gasification device, a pulverized coal gasification device or a fixed-bed pulv...

Embodiment 2

[0197] see figure 2 , shown in the figure is a synthesis gas purification device combining sulfur-resistant conversion and circulating fluidized bed thermal desulfurization, including water quenching washing device 100a, heat exchangers 210a, 220a, heat recovery device 1100a, adiabatic sulfur-resistant conversion Reaction device 300a, circulating fluidized bed 400a, regenerable NH removal 3 / HCN unit 700a, sulfuric acid unit 800a, cooling unit 900a.

[0198] The water quenching and washing device 100a has a crude synthesis gas input port 110a and a crude synthesis gas output port 120a, and the crude synthesis gas input port 110a of the water quenching and washing device 100a is connected to a coal water slurry gasification through a crude synthesis gas delivery pipeline 6 Apparatus 1000a.

[0199] The sulfur-tolerant shift reaction system 300a can adopt the Chinese patent number ZL201210040295.6 applied by the applicant, and the invention name is a radial or axial radial fi...

Embodiment 3

[0218] see image 3 , a synthetic gas purification device combining sulfur-resistant shift and circulating fluidized bed thermal desulfurization shown in the figure, including water quenching washing device 100b, heat exchangers 210b, 220b, heat recovery device 1100b, and isothermal shift reaction system 300b, circulating fluidized bed 400b, regenerable NH removal 3 / HCN unit 700b, sulfur recovery unit 800b, cooling unit 900b.

[0219] The water quenching and washing device 100b has a crude synthesis gas input port 110b and a crude synthesis gas output port 120b, and the crude synthesis gas input port 110b of the water quenching and washing device 100b is connected to a pulverized coal gasification device 1000b through a crude synthesis gas delivery pipeline 6 .

[0220] The isothermal shift reaction system 300b can adopt the Chinese patent number ZL201320176372.0 applied by the applicant, and the invention name is an isothermal fixed-bed reactor in which the catalyst is pla...

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Abstract

The present invention discloses a synthetic gas purification method, device and application combining sulfur-resistant shift and circulating fluidized bed thermal desulfurization, which uses sulfur-tolerant shift technology combined with circulating fluidized bed desulfurization technology to rationally configure shift reaction and circulating fluidization bed desulfurization system, removal of sulfur compounds, arsenic and its compounds, selenium and its compounds, light aromatics in syngas, removal of ammonia and cyanide in syngas by fixed bed adsorbent, and optionally A guard bed device is added to remove other trace impurities such as mercury and hydrogen chloride in the syngas to achieve the goal of syngas purification. The process of removing purified gas by using sulfur-resistant conversion technology combined with circulating fluidized bed desulfurization technology can simplify the purification process and reduce equipment, thereby effectively saving the area occupied by equipment and reducing the investment cost of the synthesis gas purification device.

Description

technical field [0001] The present invention relates to the technical field of purification of impurities in crude syngas produced by gasification of coal or other carbon-containing materials, in particular to a method and device for purifying syngas combined with sulfur-resistant conversion and circulating fluidized bed thermal desulfurization. application. The invention removes sulfur-containing compounds, arsenic and its compounds, selenium and its compounds, light aromatics and trace impurities in the synthesis gas, such as ammonia, cyanide, mercury and hydrogen chloride, and is suitable for new construction or renovation projects in this field. Background technique [0002] In existing technologies and industrial practices, two methods are generally used to remove acid gases and other impurities from syngas. One is to use a solvent for physical or chemical liquid-phase absorption; the other is to use a solid adsorbent to remove in a fixed bed. [0003] Removal of sulf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/12B01D53/50
Inventor 杨震东宗丽董红军顾鹤燕王彪
Owner SHANGHAI INT ENG CONSULTING
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