Sulfur-tolerant shift and circulating fluidized bed hot desulfurization combination synthetic gas purifying method, and apparatus and application thereof

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

Active Publication Date: 2015-10-21
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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  • Sulfur-tolerant shift and circulating fluidized bed hot desulfurization combination synthetic gas purifying method, and apparatus and application thereof
  • Sulfur-tolerant shift and circulating fluidized bed hot desulfurization combination synthetic gas purifying method, and apparatus and application thereof
  • Sulfur-tolerant shift and circulating fluidized bed hot desulfurization combination synthetic gas purifying method, and apparatus and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0146] 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.

[0147] 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

[0185] 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.

[0186] 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.

[0187] 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

[0206] 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.

[0207] 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 .

[0208] 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 invention discloses a sulfur-tolerant shift and circulating fluidized bed hot desulfurization combination synthetic gas purifying method, and an apparatus and an application thereof. A sulfur-tolerant shift technology is combined with a circulating fluidized bed hot desulfurization technology to reasonably configure heat of a shift reaction and a circulating fluidized bed desulfurization system and remove sulfur-containing compounds, arsenic and compounds thereof, and light aromatic hydrocarbons from synthetic gas, a fixed bed adsorbent is adopted to remove ammonia and cyanide from the synthetic gas, and a protection bed device is optionally increased to remove tiny amounts of other impurities, such as mercury and hydrogen chloride from the deprivation in order to realize synthetic gas purification. The sulfur-tolerant shift and circulating fluidized bed hot desulfurization combination synthetic gas purifying method can simplify the purifying process and reduce devices, so the occupied area of the devices is effective saved, and the investment cost of the synthetic gas purifying apparatus is reduced.

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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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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