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Integrated biogas desulfurizing device and method

A biogas desulfurization and biogas technology, applied in chemical instruments and methods, separation methods, gas fuels, etc., can solve the problems of flammability and explosion, microbial decay and death, and clogging of the reaction system, and achieves low operating costs and continuous and stable discharge. , the effect of investment cost saving

Active Publication Date: 2019-02-12
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, biogas inevitably contains hydrogen sulfide. The current biogas discharge is characterized by large gas volume and high concentration of hydrogen sulfide, which can reach 2% in extreme cases. Hydrogen sulfide is not only toxic, flammable and explosive, but also extremely corrosive. How to efficiently purify hydrogen sulfide in biogas is related to the safe and efficient utilization of biogas energy
In the traditional biogas desulfurization process, the dry desulfurization based on iron oxide and the wet desulfurization based on lye absorption cannot perform long-term and efficient biogas purification, and the corrosion of key equipment will greatly increase the operating cost, while the biological desulfurization method There have always been problems such as long construction period, blockage of reaction system, and microbial withering and death.

Method used

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  • Integrated biogas desulfurizing device and method
  • Integrated biogas desulfurizing device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The biogas enters the reaction pool 9 through the fan 7 from the gas collection outlet 8, and the reaction pool contains Fe 3+ The absorption liquid quickly absorbs the hydrogen sulfide in the biogas; start the high-voltage DC power supply 1, and the high-voltage electrode 3 is immersed in the liquid surface of the absorption liquid for 3mm to directly discharge the liquid phase, and the gas that reaches the standard is discharged from the upper gas outlet 10; The liquid port 11 blows the hydrogen peroxide stored in the liquid storage tank 13 into the reaction tank 9 through the circulation pump 12, and the liquid level detector 6 determines the amount of regeneration liquid that needs to be supplemented.

Embodiment 2

[0036] The biogas enters the reaction pool 9 through the fan 7 from the gas collection outlet 8, and the reaction pool contains Fe 3+ The absorption liquid quickly absorbs the hydrogen sulfide in the biogas; start the high-voltage DC power supply 1, extend the low-voltage end into the liquid surface of the absorption liquid, and immerse the high-voltage electrode 3 into the liquid surface of the absorption liquid for 5mm to directly discharge the liquid phase, and the gas after reaching the standard is discharged from the upper gas outlet 10 discharge; in the working process, the hydrogen peroxide stored in the liquid storage tank 13 is blown into the reaction tank 9 from the liquid inlet 11 through the circulation pump 12, and the liquid level detector 6 judges the amount of regenerating liquid that needs to be supplemented.

Embodiment 3

[0038] The biogas enters the reaction pool 9 through the fan 7 from the gas collection outlet 8, and the reaction pool contains Fe 3+ The absorption liquid quickly absorbs the hydrogen sulfide in the biogas; start the high-voltage DC power supply 1, and the high-voltage electrode 3 is immersed in the liquid surface of the absorption liquid 4mm to directly discharge the liquid phase, and the gas that reaches the standard is discharged from the gas outlet 10 above; during the working process, from the inlet The liquid port 11 blows the hydrogen peroxide stored in the liquid storage tank 13 into the reaction tank 9 through the circulation pump 12, and the liquid level detector 6 judges the amount of regeneration liquid that needs to be supplemented. The bottom flows out and is separated from the solid and liquid by the filtration system 14. The sulfur element enters the solid tank 15, and the remaining absorption liquid returns to the reaction tank 9 for further use.

[0039] In ...

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Abstract

The invention discloses an integrated biogas desulfurizing device and method, and belongs to the technical field of biogas desulfurizing. The integrated biogas desulfurizing device comprises a reaction tank, wherein the reaction tank is used for accommodating absorbing liquid; the upper side of the reaction tank is provided with a gas outlet, and the lower side of the reaction tank is provided with a gas collection and distribution port; the gas collection and distribution port is connected with a fan at the exterior of the reaction tank; a high-voltage electrode and a low-voltage end are arranged in the reaction tank; one end, without being immersed under the liquid level, of the high-voltage electrode is connected with a positive electrode of a high-voltage direct current power source control console through a high-voltage conducting wire; one end, without extending under the liquid level, of the low-voltage end is connected with a negative electrode of the high-voltage direct current power source control console. The integrated biogas desulfurizing device has the advantages that a technology route and device combining direct current glow discharge and wet desulfurization are proposed; after reaction, the sulfur element with higher purity can be collected for recycling; the investment cost and running cost are low, and the treatment, regeneration and recycling are integratedtogether.

Description

【Technical field】 [0001] The invention belongs to the technical field of biogas desulfurization, and relates to a desulfurization device and method combining discharge plasma and wet desulfurization, in particular to an integrated biogas desulfurization device and method. 【Background technique】 [0002] Biogas is a flammable gas with high calorific value, which can be used to drive generators to generate electricity or drive blowers to supply gas. However, biogas inevitably contains hydrogen sulfide. The current biogas discharge is characterized by large gas volume and high concentration of hydrogen sulfide, which can reach 2% in extreme cases. Hydrogen sulfide is not only toxic, flammable and explosive, but also extremely corrosive. How to efficiently purify hydrogen sulfide in biogas is related to the safe and efficient utilization of biogas energy. In the traditional biogas desulfurization process, the dry desulfurization based on iron oxide and the wet desulfurization b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/32B01D53/52B01D53/78C10L3/10
CPCB01D53/323B01D53/52B01D53/78B01D2258/05C10L3/103
Inventor 孙世翼徐浩
Owner XI AN JIAOTONG UNIV
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