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Methane purification system and methane purification technology thereof

A technology of biogas and gas cabinets, which is applied in the petroleum industry, gas fuel, fuel, etc., can solve the problems of high operating cost, high investment cost, and low purification purity, and achieve low operating cost, low failure rate, and high purification rate. Effect

Inactive Publication Date: 2013-08-07
SHANXI FENXI ELECTROMECHANICAL
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Problems solved by technology

[0003] The invention provides a biogas purification system and its biogas purification process, which solves the problems of high investment cost, high operation cost, high failure rate and low purification purity existing in the existing system

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  • Methane purification system and methane purification technology thereof

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Embodiment Construction

[0017] A biogas purification system, comprising an anaerobic tank 1, a particle filter 2 is connected to the anaerobic tank 1, a drying tower 3 is connected to the particle filter 2, a desulfurization tower 4 is connected to the drying tower 3, and the desulfurization A gas cabinet 5 is connected to the tower 4, a steam-water separator 6 is connected to the gas cabinet 5, a low-pressure biogas compressor 7 is connected to the steam-water separator 6, and an interception pre-filter 8 is connected to the low-pressure biogas compressor 7 , the interception pre-filter 8 is connected with a refrigerated dryer 9, a coalescing filter 10 is connected with the refrigerated dryer 9, and an oil-water separation filter 11 is connected with the coalescing filter 10. The oil-water separation filter 11 is connected with a precision terminal filter 12, and a heater 13 is connected with the precision terminal filter 12, and the gas output port of the heater 13 is connected with the first CO 2 ...

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Abstract

The invention discloses a methane purification system and a methane purification technology thereof, solving problems of high investment cost, high operation cost, high fault rate and low purification purity of a conventional system. The system comprises an anaerobic tank (1), a particle filter (2), a drying tower (3), a desulfurizing tower (4), a gasometer (5), a steam-water separation device (6), a low-pressure methane compressor (7), an interception type prefilter (8), a refrigeration drying machine (9), an agglomeration type filter (10), an oil-water separation filter (11), a precise ultimate filter (12), a heater (13), a first CO2 / CH4 efficient separation membrane (14), a second CO2 / CH4 efficient separation membrane (19) and a methane storage tank (20), wherein a methane-enrichment port (15) of the first CO2 / CH4 efficient separation membrane (14) is communicated with a carbon dioxide purification device (16), and a carbon dioxide storage tank (17) is connected with the carbon dioxide purification device (16). The purification technology has high purification rate; and the whole set of technology can realize full-automatic operation.

Description

technical field [0001] The present invention relates to a biogas purification system, in particular to a biogas purification system for biogas produced in several types of environments including plants, animals and their excrement, garbage and organic waste water, and a purification process using the system method. Background technique [0002] In biogas, the content of methane is 60%-65%, the content of carbon dioxide is 35%-40%, and also contains a small amount of hydrogen sulfide. The presence of carbon dioxide in biogas reduces the energy density of biogas, and if the biogas used needs to meet natural gas standards or be used as a vehicle fuel, then the carbon dioxide must be removed. At present, the methods of biogas purification process include high-pressure water washing method, pressure swing adsorption method, chemical absorption method, etc., which have high investment cost, high operation cost, high failure rate, high maintenance cost, non-continuous adjustment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L3/10
Inventor 王刚张志刚朱劲松席瑞鑫祁智高瑜乔楠赵屾郝学威王利平
Owner SHANXI FENXI ELECTROMECHANICAL
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