Pressure swing adsorption (PSA) method for biogas purification is very common. Here is a short edition to popularize the characteristics of this method. I hope it will be helpful to everyone!
Pressure swing adsorption (PSA) is a method to separate gas components under pressure by using different adsorption capacities of CH4, CO2 and N2 in biogas on the surface of adsorbent. The adsorption capacity of components is affected by pressure and temperature. The adsorption capacity increases with the increase of pressure and decreases with the decrease of pressure. The adsorption capacity decreases with the increase of temperature and increases with the decrease of temperature. Pressure swing adsorption (PSA) requires very strict gas sources. The existence of H2S will lead to permanent poisoning of adsorbents. PSA requires gas drying. So H2S and H2 should be removed before PSA.
Adsorption materials play a key role in this technology. Generally, different types of activated carbon, zeolite, silica gel, alumina and molecular sieve are used as adsorption materials. Different adsorption materials have different purification effects on biogas. At present, carbon-based adsorbents, mainly activated carbon and molecular sieve, are often used in the study of biogas purification. In recent years, some new adsorbents, such as ordered mesoporous materials, amine modified adsorbents and metal frameworks (MOFs), have high adsorption selectivity for CO2 and have broad application prospects. MOFs are considered to be the most promising adsorbent for CO2 separation.
Today's wonderful content will be introduced here for the time being. If you have something else to add, you are welcome to leave a message and comment on the official website of biogas purification: http://www.mimi5.cn, or call our hotline directly. We will give you a satisfactory answer!
企業(yè)二維碼
2019-07-24
魯公網安備37011202000764號號