VPSA biogas carbon capture desorption test
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I would like to ask the experts and fellow professionals: When using 13X molecular sieves and silica gel as adsorbents for methane decarbonization in VPSA, what values should be chosen for the \"vacuum level\" and \"desorption time\" after carbon dioxide is adsorbed, followed by vacuum desorption? (Lab tests: the volume of the adsorption bed is very small, around 20 milliliters.) Can a vacuum pump be connected directly to the adsorption bed? Is it necessary to use a buffer or something similar? What impact does not adding it have on the adsorbent? I am currently conducting experiments on biogas decarbonization, and I hope to exchange more ideas with other professionals in this field in order to learn more * :) This post was last edited by oexfdy on 2009-3-19 at 15:17.]
Why is no one responding...:Q
You’ve asked about someone’s trade secrets. However, VPSA is generally not used these days; instead, PSA is sufficient after replacing the adsorbent. It’s not that complicated!
It can be added or left out; it has an impact, and the specific effects need to be determined through experiments.
Vacuum level and desorption time are factors that need to be examined; it’s difficult to provide answers for different devices without conducting experiments!
The higher the vacuum level, the better, right? At the adsorption-desorption equilibrium, it indicates that the desorption time is appropriate
The desorption time needs to be tested at a vacuum level of -80 KPA