| abstract |
PROBLEM TO BE SOLVED: To provide a method for removing a mercaptan compound contained in a gas, which is reproducible and can be removed stably and effectively over a long period of time. SOLUTION: A gaseous sulfide is added to a processing gas containing mercaptan, and the mercaptan compound is adsorbed by flowing through any of ultra-stable Y-type zeolite, H-ion-exchanged β-type zeolite, and H-ion-exchanged MFI-type zeolite. Let it. |