If the biogas is not desulfurized, it will cause serious corrosion to the biogas equipment. So the desulfurization process of biogas is very necessary. The following edition will popularize the principle of biogas physical desulfurization technology for everyone!
Activated carbon adsorption is often used in physical desulfurization technology. Activated carbon has porous, large specific surface area, strong adsorbability, can desulfurize, debenzene, deodorize, decolorize and so on. It can be used in industrial processes and human life such as chemical industry, petroleum, natural gas, metallurgy, atomic energy, water treatment, food, textile, medicine, urban construction and environmental protection. It is a commonly used adsorbent.
活性炭的吸附作用是一個催化反應，活性炭作為催化劑，吸附H2S后，催化H2S與其吸附的氧發生反應：
The adsorption of activated carbon is a catalytic reaction. Activated carbon acts as a catalyst. After adsorbing H2S, H2S reacts with the oxygen adsorbed by it.
The formed S element is adsorbed on the activated carbon. Single-bed or double-bed system can be used to adsorb H2S by activated carbon bed (AS), which is determined by the concentration of H2S. When the first adsorption bed adsorbs H2S in series, the latter one hardly works; when the first adsorption bed penetrates (i.e. when the H2S content at the outlet of the first adsorption bed exceeds the standard), H2S will be adsorbed through the second adsorption bed, while the first adsorption bed still works; when the first adsorption bed is saturated (i.e., the H2S content at the inlet of the first adsorption bed and the H2S content at the outlet of the first adsorption bed). When the H2S content of the outlet is basically equal, the activated carbon of the first adsorption bed needs to be replaced; after replacing, the new adsorption bed operates as the second adsorption bed; thus, the activated carbon can be used for adsorption to the maximum extent, ensuring the desulfurization accuracy and prolonging the service life.
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2019-07-01
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