Removal of COS from high-concentration CO2 feed gas
Thread Content
Removal of trace COS from high-concentration CO2 feed gas used for urea synthesis. It is understood that COS hydrolysis catalysts do not seem to perform well in high-concentration CO2 atmospheres (especially when the water content is low). So what technologies are people using then (from which manufacturers)? How is it performing in practice?
H2S+CO2=COS+H2O is a reversible reaction. First, remove hydrogen sulfide completely, while also taking care to avoid this side reaction
Yes, the similar desulfurization processes these days all involve first removing H2S, then hydrolyzing COS, and finally removing the H2S produced by this hydrolysis. That is, a process such as “adsorption + hydrolysis + adsorption”. However, numerous studies have indicated that the competitive adsorption of high concentrations of CO2 on the hydrolysis catalyst results in a very low conversion rate of COS. I wonder if anyone has a proven solution to this problem.