Method and device for removing hydrogen sulfide from gas containing hydrogen sulfide and recovering sulfer using catalytic oxidation

A technology for catalytic oxidation and hydrogen sulfide, applied in chemical instruments and methods, separation methods, catalysts for physical/chemical processes, etc., can solve the problems of low processing capacity, low conversion activity, complex process, etc., and achieve fast conversion speed and simple equipment. , the effect of excellent performance

Inactive Publication Date: 2008-12-24
深圳龙澄高科技环保股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Separation of elemental sulfur and recycling of the treated scrubbing liquid back into the gas scrubbing step is a complex process with poor adaptability
Chinese patent CN1792415A discloses a method for preparing a hydrogen sulfide desulfurizer from the red mud of an alumina factory. The method uses 80wt% to 90wt% red mud as a raw material and prepares a hydrogen sulfide desulfurizer with an auxiliary agent. The sulfur capacity reaches 19.0%. Regeneration is required after saturation, only suitable for fine desulfurization
Chinese patent CN1094331A discloses a zinc oxide desulfurizer at room temperature. The desulfurizer is mainly composed of zinc oxide and iron oxide. low ability
To sum up, both at home and abroad attach great importance to the treatment of hydrogen sulfide. However, there are few studies on the removal of odorous hydrogen sulfide gas produced in industrial and agricultural production, municipal sewage, sludge treatment and garbage disposal processes.

Method used

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  • Method and device for removing hydrogen sulfide from gas containing hydrogen sulfide and recovering sulfer using catalytic oxidation
  • Method and device for removing hydrogen sulfide from gas containing hydrogen sulfide and recovering sulfer using catalytic oxidation

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Embodiment 1

[0033] Taking the removal of the hydrogen sulfide odor gas produced by the fecal residue treatment plant, municipal solid waste transfer compression station, and public toilets as examples, the application process of hydrogen sulfide odor removal is described (see attached Figure 1 ).

[0034] The prepared hydrogen sulfide oxidation catalyst solution containing 0.1 mole of iron ions is diluted 10 times with tap water and injected into the liquid storage tank.

[0035] With the help of the negative pressure generated by the exhaust fan, the hydrogen sulfide content is reduced to 3.5mg / m 3 The malodorous gas in the upper space of the septic tank of the dung disposal site enters the desulfurization tower evenly through the gas distributor at the bottom of the spray oxidation tower, and contacts with the hydrogen sulfide oxidation catalyst solution sprayed down from the top of the tower in countercurrent. With the participation of inhaled air, a catalytic oxidation reaction is c...

Embodiment 2

[0037] Taking the treatment of hydrogen sulfide in biogas, landfill gas and natural gas as examples, the process of removing hydrogen sulfide in combustible gas is described.

[0038] Combustible gases such as biogas, landfill gas and natural gas contain a large amount of hydrogen sulfide, generally at 0.1-12g / m 3 within range. When they are used as fuel, the hydrogen sulfide in them is converted into highly corrosive sulfurous acid mist, which pollutes the environment and corrodes equipment. In order to prevent the harm caused by hydrogen sulfide, desulfurization treatment must be carried out before using this kind of gas. The device disclosed by the present invention for removing hydrogen sulfide in combustible gases such as biogas, landfill gas and natural gas consists of two hydrogen sulfide catalytic oxidation towers with the same structure and related auxiliary equipment (see the appendix Figure II ). In the process of removing hydrogen sulfide, one of the towers is ...

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Abstract

The present invention discloses a method for removing the hydrogen sulfide from the gas containing the hydrogen sulfide and for recycling the sulfur element with the catalytic oxidation effect, and discloses a device thereof. A catalytic oxidation system consisting of iron ion and ethylenediamine tetracetic acid is used, so that the hydrogen sulfide is transformed to the sulfur element so as to be removed from the air stream containing the hydrogen sulfide; the hydrogen sulfide removing rate reaches 99.9 percent. The method of the present invention not only can be used for removing the hydrogen sulfide in the gas from the manure processing field, the urban living garbage transshipping station, the public toilet, the sewage treatment plant, the solid waste processing field, the oil refining plant and the animal dead-body sanitary processing field, but also can be used for removing the hydrogen sulfide in the fuel gases such as the marsh gas, the land-filling gas, the natural gas, etc. During the treatment process, except the useful sulfur element is produced, no other product that influences the environment is produced.

Description

1. Technical field [0001] The invention relates to a method and a related device for removing hydrogen sulfide and recovering elemental sulfur from hydrogen-containing gas by catalytic oxidation, belonging to the technical field of gas purification treatment, more specifically, the invention relates to a dung removal treatment field , urban waste transfer station, public toilet, sewage treatment plant, solid waste treatment site, animal carcass sanitation treatment site, composting site, landfill and other places emit hydrogen sulfide and convert it into elemental sulfur. The invention can also be used to remove hydrogen sulfide from gases such as biogas, landfill gas and natural gas. 2. Technical background [0002] Hydrogen sulfide is a strong, pungent, colorless gas with the smell of rotten eggs. It is highly toxic to the human body, flammable and explosive, and extremely corrosive to metals. In the chemical process, it will cause catalyst poisoning, corrode equipment a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/52B01D53/86B01J23/745B01J31/28
Inventor 张涉马辉文童立恒范敏孟丽娜黄卓汪春霞李欣
Owner 深圳龙澄高科技环保股份有限公司
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