Membrane absorption device and method for purifying bio-methane
A biomethane and membrane absorption technology, which is applied in chemical instruments and methods, separation methods, gas fuels, etc., can solve the problems of high energy consumption cost and high operating pressure for purifying biomethane, so as to solve the operating pressure and improve the gas-liquid absorption rate , Increase the effect of gas-liquid contact area
Active Publication Date: 2015-03-25
南京碳环生物质科技有限公司
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[0004] The purpose of the present invention is to provide a membrane absorption device for purifying biomethane that can reduce the operating pressure of purifying biomethane, so as to solve the technical problem of high energy consumption and high cost of purifying biomethane in the prior art
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[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0021] An embodiment of the membrane absorption device for purifying biomethane of the present invention is as follows:
[0022] The structure of the membrane absorption device for purifying biomethane in this embodiment is as follows: Figure 1 to Figure 3 As shown, two membrane absorption units 1 are connected in series. The membrane absorption unit 1 includes an absorber with a cavity, the bottom of the absorber cavity is a liquid storage tank 12, and the upper part of the absorber cavity is a sprayer 11. A liquid inlet 17 is connected to the sprayer 11, a liquid discharge port 18 is connected to the liquid storage tank 12, an air outlet 16 is provided at the top of the absorber above the sprayer, and the inner cavity of the absorber is located between the sprayer 11 and Hollow fiber membranes 12 are arranged between the liquid storage ta...
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Abstract
The invention discloses a membrane absorption device and method for purifying bio-methane. The membrane absorption device for purifying the bio-methane comprises at least two membrane absorption units which are connected with each other in series, wherein each membrane absorption unit comprises an absorber with an inner cavity; a spray thrower is arranged at the upper part of the inner cavity of each absorber; an air outlet is formed above the spray thrower and in the top of each absorber; a hollow fiber membrane is arranged between each spray thrower and a liquid storage tank, in the inner cavity of each absorber; each hollow fiber membrane is a hollow pipe which is made of a porous hydrophobic polymer; an air inlet cavity is formed in the wall surface, between each spray thrower and the corresponding liquid storage tank, of each absorber; one end of each hollow fiber membrane is communicated with the corresponding air inlet cavity; and the other end of each hollow fiber membrane is hermitically arranged on the wall surface of the corresponding absorber. An absorption liquid is sprayed to the hollow fiber membranes by virtue of the spray throwers; a layer of liquid membrane is formed in the outer surface of each hollow fiber membrane; a membrane absorption process with gas-liquid contact absorption, bubble absorption and significant increase of gas-liquid contact area and absorption and mass transfer coefficient characteristics are achieved; and operation pressure can be effectively lowered.
Description
technical field [0001] The invention relates to a membrane absorption device and method for purifying biomethane, which can be used for separating methane and carbon dioxide in biomethane, and belongs to the technical field of biomethane purification. Background technique [0002] Biomethane refers to gas with high methane concentration purified from methane-rich gas produced by anaerobic fermentation of organic matter such as biogas and landfill gas. In practical applications, biomethane is usually used as a supplementary or alternative fuel to natural gas, so it is often referred to as bionatural gas. Because biomethane comes from the biological anaerobic degradation process of organic matter, it has the characteristics of carbon cycle and belongs to renewable energy, which has good development and application prospects. [0003] The main work of purifying biomethane from biogas and landfill gas is to separate methane and carbon dioxide. There are three commonly used met...
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IPC IPC(8): B01D53/18B01D53/22C10L3/10
Inventor 陈泽智龚惠娟王昶樊杨梅
Owner 南京碳环生物质科技有限公司