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Biogas purification double-membrane aeration membrane bio-membrane reactor and use method thereof

A technology of membrane reactor and membrane aeration, applied in chemical instruments and methods, separation methods, membrane technology, etc., can solve problems such as insufficient biotransformation, achieve high-efficiency biotransformation, and improve the effect of biotransformation rate

Active Publication Date: 2021-10-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of insufficient biotransformation of the two caused by the difference in the solubility of carbon dioxide and hydrogen in the biogas purification process, and the proposed biogas Purification double-membrane aerated membrane biofilm reactor and using method thereof

Method used

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  • Biogas purification double-membrane aeration membrane bio-membrane reactor and use method thereof

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specific Embodiment approach 1

[0019] Specific Embodiment 1: The biogas purification double-membrane aeration membrane biofilm reactor in this embodiment includes a biogas high-pressure cylinder 1, a hydrogen high-pressure cylinder 2, a reactor main body 5, a stirring device, a biogas aeration membrane module 11, a hydrogen aeration Gas membrane module 13, backflow device 15, circulation pump 19, liquid seal device 20, gas collection bag 21, water inlet pump 22, water inlet device 23, water inlet air bag 24 and constant temperature heating device 25; A microbial liquid fermentation medium is provided;

[0020]The reactor main body 5 is provided with a biogas aeration membrane module 11 and a hydrogen aeration membrane module 13, and the gas outlet of the biogas high-pressure cylinder 1 communicates with the biogas aeration membrane module 11 through a pipeline, and the pipeline is equipped with There is a biogas decompression valve 3; the gas outlet of the hydrogen high-pressure cylinder 2 communicates with...

specific Embodiment approach 2

[0021] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that two biogas aeration membrane modules 11 are arranged in the reactor main body 5, and the biogas aeration membrane modules 11 are composed of hollow fiber membrane tow, The membrane module head and the membrane module fixing part are composed. The membrane module head is arranged at both ends of the hollow fiber membrane tow, and the hollow fiber membrane tow is fixed in the reactor main body 5 through the membrane module fixing part and through the membrane module head. The gas outlet of the biogas high-pressure gas cylinder 1 communicates with the inlet of the two-hole gas distribution valve 10 through the pipeline, and the gas outlet of the two-hole gas distribution valve 10 communicates with the hollow fiber membrane tow through the pipeline.

[0022] Other steps are the same as in the first embodiment.

[0023] The gas mass transfer of the hollow fiber membrane tow in the...

specific Embodiment approach 3

[0024] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that four hydrogen aeration membrane modules 13 are arranged in the reactor main body 5, and the hydrogen aeration membrane modules 13 are made of hollow fiber membrane filaments. The membrane module head is set at both ends of the hollow fiber membrane bundle, and the hollow fiber membrane bundle is fixed on the reactor body through the membrane module holder and the membrane module head. 5; the gas outlet of the hydrogen high-pressure cylinder 2 communicates with the air inlet of the four-hole gas distribution valve 12 through the pipeline, and the gas outlet of the four-hole gas distribution valve 12 communicates with the hollow fiber membrane tow through the pipeline .

[0025] Other steps are the same as those in Embodiment 1 or 2.

[0026] The gas mass transfer of the hollow fiber membrane tow in the hydrogen aeration membrane module 13 is relatively fast.

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Abstract

The invention discloses a biogas purification double-membrane aeration membrane bio-membrane reactor and a use method thereof, and relates to the technical field of renewable energy sources. The invention aims to solve the problem of insufficient bioconversion of carbon dioxide and hydrogen due to solubility difference of the carbon dioxide and the hydrogen in a biogas biological purification process. According to the method, the biogas purification double-membrane aeration membrane bio-membrane reactor realizes high-efficiency biological conversion of hydrogen and carbon dioxide by controlling the partial pressure of the hydrogen and the biogas according to different solubility of the hydrogen and the carbon dioxide, and the conversion rate is higher than 93%. By adopting a bubble-free aeration mode, microorganisms taking H2 / CO2 as electron donors can be attached to the surface of the hollow bubble-free fiber membrane, the H2 / CO2 biological conversion rate is effectively improved, and the yield of liquid chemical acetic acid can reach 45.36 mmol / L / d while the purity of biogas reaches 96% or above. The invention can obtain the biogas purification double-membrane aeration membrane bio-membrane reactor and the use method thereof.

Description

technical field [0001] The invention relates to the technical field of renewable energy, in particular to a double-membrane aerated membrane biofilm reactor for biogas purification and a use method thereof. Background technique [0002] Energy is an important material basis for economic and social development. With the rapid consumption of fossil energy resources such as coal, oil and natural gas, and the deteriorating ecological environment, especially the increasingly severe global climate change caused by greenhouse gas emissions, vigorously developing biomass energy and non-fossil raw material-dependent resources is the key to achieving sustainable economic and social development. important task for sustainable development. [0003] The potential of waste resources that can be used for anaerobic digestion to produce biomass biogas in my country is huge. The total amount of waste resources (such as livestock and poultry manure, crop straw, and kitchen waste) that can be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/84B01D53/62C10L3/10
CPCB01D53/84B01D53/62C10L3/104B01D2251/95B01D2257/504Y02A50/20Y02E50/30
Inventor 赵磊毋凯凯孙忠芳王子寒张成成陈川任南琪
Owner HARBIN INST OF TECH
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