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Desulfurizing system and method for biogas containing high-concentration hydrogen sulfide

A desulfurization system, hydrogen sulfide technology, applied in chemical instruments and methods, separation methods, gas treatment and other directions, can solve the problems of energy waste and high operating costs, achieve low operating costs, save the cost of desulfurization agents, and realize the effect of automatic operation

Active Publication Date: 2018-09-28
华夏碧水环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a desulfurization system and desulfurization method for biogas containing high-concentration hydrogen sulfide, which solves the problems of high operating cost and waste of energy in the existing desulfurization process of biogas containing high-concentration hydrogen sulfide

Method used

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  • Desulfurizing system and method for biogas containing high-concentration hydrogen sulfide
  • Desulfurizing system and method for biogas containing high-concentration hydrogen sulfide

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Embodiment 1

[0038] Such as Figure 1-5 As shown, a desulfurization system for biogas containing high-concentration hydrogen sulfide, including biogas inlet 1, biogas flow meter 2, biogas cabinet 3, wet desulfurization tower, gas-water separator 6, several series or Parallel dry desulfurization tower, outlet gas detector 7-17, biogas blower 10 and biogas utilization pipeline 11, the spray liquid treated by the wet desulfurization tower 5 and the liquid of the gas-water separator 6 all enter the desulfurization liquid for regeneration Processing device, the desulfurization liquid regeneration processing device includes a rich liquid pool 12, a regeneration pool 1915 and a lean liquid pool 19 connected in sequence, and the lean liquid pool 19 communicates with the wet desulfurization tower 5 through a wet tower spray pump 20 , the regeneration tank 15 is provided with a jet pump 13, a jet device 14, and an aerator 16, and the regeneration tank 1915 is connected with a sulfur foam collector 1...

Embodiment 2

[0059] A kind of desulfurization method that contains high-concentration hydrogen sulfide biogas, adopts the desulfurization system of embodiment 1, comprises the following steps:

[0060] (1) The biogas produced by the anaerobic pond enters the biogas tank from the biogas inlet through the first biogas flowmeter, and after being temporarily stored in the biogas tank, it enters the wet desulfurization tower; in this tower, the biogas runs from bottom to top, and from top to top After the desulfurization spray liquid under contact, react to remove 90-98% of the hydrogen sulfide in the biogas, and the biogas after the removal of hydrogen sulfide enters the gas-water separator, in the gas-water separator, the biogas and water are separated Separation, the separated biogas enters the dry desulfurization tower, the hydrogen sulfide content in the biogas after dry desulfurization is reduced to below 100ppm, and after being pressurized by the biogas fan, it can enter the biogas utiliz...

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Abstract

The invention relates to a desulfurizing system for biogas containing high-concentration hydrogen sulfide. The desulfurizing system comprises a biogas inlet, a biogas flowmeter, a biogas cabinet, a wet-process desulfurizing tower, a gas-water separator, a plurality of dry-process desulfurizing towers in serial connection or parallel connection, an outlet gas detector, a biogas fan and a biogas utilization pipeline which are sequentially communicated through biogas, and both spraying liquid after being treated by the wet-process desulfurizing tower and liquid of the gas-water separator enter adesulfurizing liquid regeneration and treatment device. The desulfurizing system combines wet-process desulfurizing with dry-process desulfurizing, and concentration of hydrogen sulfide can be loweredfrom higher than 20000ppm to below 100ppm to meet biogas energy utilization needs. the desulfurizing system is low in running cost, economic benefit can be generated utilizing biogas after being treated by the system, and generated byproducts can be sold as goods, so that many things are achieved at one stroke.

Description

technical field [0001] The invention relates to a desulfurization system and a desulfurization method for biogas containing high-concentration hydrogen sulfide, belonging to the technical field of biogas desulfurization. Background technique [0002] Biogas is a kind of combustible gas produced by the fermentation of various organic substances by microorganisms in the isolation of air (reducing conditions) and at a suitable temperature and pH value. Biogas belongs to secondary energy and is renewable energy. The calorific value of biogas per cubic meter is about 20800-23600 kJ, which is equivalent to the heat provided by 0.7 kg of anthracite, so it is a good energy source. The main components of biogas include: 50%-80% methane (CH 4 ), 20%-40% carbon dioxide (CO 2 ), 0%-5% nitrogen (N 2 ), less than 1% hydrogen (H 2 ), less than 0.4% oxygen (O2) and 0.1%-3% hydrogen sulfide (H 2 S) and other gases. At present, most of the biogas generated in industrial production comes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/75B01D53/90B01D53/81B01D53/52B01D53/96
CPCB01D53/52B01D53/75B01D53/81B01D53/8612B01D53/90B01D53/96B01D2251/304B01D2251/602B01D2251/606B01D2255/705B01D2258/05
Inventor 张传兵徐亚慧王慧芳侯亚平徐漫漫纪宏涛侯亚龙崔珊珊牛瑞胜于玺罗献礼王强强雷贤东刘伟朱胜利江嘉晶
Owner 华夏碧水环保科技股份有限公司
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