Producer gas desulphurization process

A producer gas and desulfurization process technology, applied in the petroleum industry, combustible gas purification, combustible gas purification/transformation, etc., can solve the problems of low desulfurization efficiency, seriousness, backward technology, etc., and achieve high sulfur recovery rate and no sulfur plugging Effect

Inactive Publication Date: 2009-05-20
山东万丰煤化工设备制造有限公司
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Problems solved by technology

Among them, the improved ADA method has the advantages of high desulfurization efficiency, fast absorption of hydrogen sulfide, mature technology, perfect process, high scale, and good technical and economic indicators; the main problem is that sulfur is easily precipitated during the absorption process, which will cause blockage of desulfurization Tower packing; ammonia liquid phase catalytic method has low desulfurization efficiency, low gas purification degree, backward technology, high ammonia consumption, and serious environmental pollution. At present, this method is only used in a limited number of small synthetic ammonia plants

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  • Producer gas desulphurization process
  • Producer gas desulphurization process
  • Producer gas desulphurization process

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Embodiment

[0041] Sulfur content from coal gasifier is 2000mg / Nm 3 After being filtered by the water seal 1, the gas enters the lower part of the desulfurization tower 2 at 30-45°C and 35KPa, and the gas intake speed is 3000mg / Nm 3 , after countercurrent contact with the desulfurization liquid sprayed on the top of the tower, it becomes tower gas; the absorbed desulfurization rich liquid is discharged from the bottom of the tower and enters the rich liquid tank 4; the desulfurized rich liquid is sprayed into the regeneration tank 7 and mixed with air for regeneration, The regenerated desulfurized liquid is sent to the desulfurization tower 2 through the lean liquid tank 7. Because of the consumption of soda ash in the absorption process, before entering the desulfurization tower, a quantitative soda ash solution is added from the alkali liquid tank 5 to the lean liquid tank 6; from the regeneration tank 7. The sulfur-containing foam that floats out is pumped into the sulfur-melting kettl...

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Abstract

The invention provides a desulfurization process of generator gas, comprising the following step: the generator gas containing sulfur is absorbed by a desulfurization solution containing a mimosa extract in a desulfurization tower; the process is characterized in that the desulfurization solution also comprises vanadium pentoxide; and the sulfur content of the generator gas is 1500-2500mg / Nm<3>. The process is suitable for a situation that the content of H2S in the gas is high. The method has high desulfurization rate and the sulfur content of the gas coming out of the tower is not more than 150mg / Nm<3>.

Description

technical field [0001] The invention belongs to the technical field of gas purification, and in particular relates to a producer gas desulfurization process. Background technique [0002] For coal gas desulfurization made from coal, the existing technology basically adopts wet desulfurization process. The process is basically divided into three categories: physical absorption method, chemical absorption method and oxidation regeneration method, among which the oxidation regeneration method is the most commonly used. The method is mature and reliable, among which the glue copying method, improved ADA method, ammonia liquid phase catalytic method and PDS method are the most widely used in China. Among them, the improved ADA method has the advantages of high desulfurization efficiency, fast absorption of hydrogen sulfide, mature technology, perfect process, high scale, and good technical and economic indicators; the main problem is that sulfur is easily precipitated during the...

Claims

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Application Information

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IPC IPC(8): C10K1/16
Inventor 刘彩霞翟智勇孙丰收寇海英史艳
Owner 山东万丰煤化工设备制造有限公司
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