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A desulfurization system and desulfurization method for biogas containing high concentration hydrogen sulfide

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

Active Publication Date: 2020-12-11
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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  • A desulfurization system and desulfurization method for biogas containing high concentration hydrogen sulfide
  • A desulfurization system and desulfurization method for biogas containing high concentration hydrogen sulfide
  • A desulfurization system and desulfurization method for biogas containing high concentration hydrogen sulfide

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Embodiment 1

[0038] like Figure 1-5 As shown, a desulfurization system for biogas containing high concentration of hydrogen sulfide includes a biogas inlet 1, a biogas flow meter 2, a biogas cabinet 3, a wet desulfurization tower, a gas-water separator 6, a number of serial or The parallel dry desulfurization tower, the outlet gas detector 7-17, the biogas fan 10 and the 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 regeneration Treatment device, the desulfurization liquid regeneration treatment device includes a rich liquid pool 12, a regeneration pool 1915 and a lean liquid pool 19 that are connected in sequence, and the lean liquid pool 19 is communicated with the wet desulfurization tower 5 through the wet tower spray pump 20 , the regeneration tank 15 is provided with a jet pump 13, a jet 14, an aerator 16, the regeneration tank 1915 is connected with a sulfu...

Embodiment 2

[0059] A desulfurization method containing high-concentration hydrogen sulfide biogas, using the desulfurization system of Embodiment 1, comprising the following steps:

[0060] (1) The biogas generated in the anaerobic tank enters the biogas tank from the biogas inlet through the first biogas flow meter. After being temporarily stored in the biogas tank, it enters the wet desulfurization tower; in this tower, the biogas runs from the bottom to the top, and the biogas flows from the top. After the lower desulfurization spray liquid is contacted, a reaction occurs to remove 90-98% of the hydrogen sulfide in the biogas, and the biogas after removing the hydrogen sulfide enters the gas-water separator, where the biogas and water are removed Separation, the separated biogas enters the dry desulfurization tower, and the hydrogen sulfide content in the biogas after dry desulfurization is reduced to below 100ppm. After being pressurized by the biogas fan, it can enter the biogas utili...

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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 various organic substances through the fermentation of microorganisms under suitable temperature and pH value after isolating air (reducing conditions). Biogas is a secondary energy source and is a renewable energy source. 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 coal, 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 gas composition. At present, biogas produced in industrial produc...

Claims

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Application Information

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Patent Type & Authority Patents(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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