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Two-phase anaerobic fermentation system for improving content of methane in biogas

A technology for anaerobic fermentation and methane content, which is applied in specific-purpose bioreactors/fermenters, bioreactor/fermenter combinations, gas production bioreactors, etc., to achieve the effect of improving activity and increasing methane production

Pending Publication Date: 2021-10-08
河南财政金融学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most of the current research on increasing methane content in biogas is based on the way that acetic acid is converted into methane by methanogens, while hydrogen is used to reduce CO 2 Less research has been done on the synthesis of methane

Method used

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  • Two-phase anaerobic fermentation system for improving content of methane in biogas
  • Two-phase anaerobic fermentation system for improving content of methane in biogas

Examples

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Effect test

Embodiment 1

[0024] A two-phase anaerobic fermentation system for increasing methane content in biogas, comprising a two-phase anaerobic fermentation device, such as figure 1 As shown, it includes an acidification reactor 2, a buffer tank 3 and a methanogenic reactor 8, and an air inlet device is connected between the buffer tank 3 and the methanogenic reactor 8, and the air inlet device includes a pump 4, a gas flow meter 6, a jet device 5. Dissolved gas tank 7 and releaser 9, pump 4 is connected between buffer tank 3 and dissolved gas tank 7, gas flow meter 6 is connected to the upper part of acidification reactor 2 as the air inlet, and one end is connected to jet device 5, and the jet flow The two ends of the device 5 are respectively connected with the two ends of the pump 4 , the dissolving tank 7 is connected with the releaser 9 , and the releaser 9 is located in the methanogenic reactor 8 .

[0025] Straw is selected as the solid fermentation raw material, and the fermentation raw ...

Embodiment 2

[0027] A two-phase anaerobic fermentation system for increasing methane content in biogas, comprising a two-phase anaerobic fermentation device, such as figure 2 Shown, comprise acidification reactor 2, surge tank 3 and methanogenic reactor 8, pass into releaser 9 in the methanogenic reactor 8, one end of releaser 9 links to each other with gas flow meter 6, and the other end of gas flow meter 6 is connected with The external source gas is connected, and the external source gas is a gas with a certain pressure.

[0028] Straw is selected as the solid fermentation raw material, and the fermentation raw material enters the acidification reactor 2 from the feed port 1. After a period of fermentation, the solid phase and the liquid phase are naturally separated, and the fermentation liquid flows into the methanogenic reactor 8 through the buffer tank 3. During d, pure hydrogen or a mixed gas of hydrogen and carbon dioxide is passed into the air inlet at one end of the gas flow me...

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Abstract

The invention relates to a two-phase anaerobic fermentation system for improving the content of methane in biogas, and belongs to the field of organic solid waste treatment and comprehensive utilization. The two-phase anaerobic fermentation system comprises an acidification reactor, a buffer tank and a methane reactor, wherein organic waste is added into the acidification reactor, solid-liquid separation is carried out in the process of producing biogas through fermentation, hydrogen is introduced into a liquid phase, and finally the liquid phase enters the methane reactor. The two-phase anaerobic fermentation system is simple in structure and easy to operate, in the anaerobic fermentation process, more H2 and CO2 are converted into methane by increasing the concentration of hydrogen in fermentation liquor, and the content of methane in biogas is increased through the hydrodeoxygenation process.

Description

technical field [0001] The invention relates to a two-phase anaerobic fermentation system for increasing methane content in biogas, which belongs to the field of organic solid waste treatment and comprehensive utilization. Background technique [0002] Anaerobic fermentation is a complex process in which organic substances are decomposed and metabolized by various types of microorganisms with a large number and different functions under certain moisture, temperature and anaerobic conditions, and finally form mixed gases (methane) such as methane and carbon dioxide. biochemical process. The mechanism of anaerobic fermentation is currently based on the three-stage anaerobic fermentation theory, that is, the formation process of methane is divided into three stages. In the third stage, acetic acid, H 2 and carbonic acid, formic acid, etc. into CH 4 , CO 2 and new cytoplasmic ones, one produces methane from the decarboxylation of acetic acid or acetate, and the other utilize...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12M1/38C12M1/34C12M1/107C12M1/04C12M1/00
CPCC12M21/04C12M23/58C12M29/06C12M41/12C12M41/34
Inventor 王艳锦李文哲张全国
Owner 河南财政金融学院
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