| 摘要 |
PURPOSE: To reduce the load applied to acidic gas or moisture removing equipment by separating synthetic gas based on CO and H2 and containing acidic gas such as H2 S or the like and moisture into transmitted gas and non- transmitted gas, and removing the acidic gas and moisture contained in the non-transmitted gas. CONSTITUTION: The synthetic gas obtained by gasifying coal or the like is based on CO and H2 and contains acidic gas such as H2 S, COS or CO2 and moisture as sub-components. The synthetic gas having this compsn. is sent into a demistor 17 and a preheater 12 to perfectly gasify the condensed component in the synthetic gas. The synthetic gas is sent into a plurality of the membrane modules 10 on the most upstream side of a front stage to be separated into transmitted gas and non-transmitted gas. Herein, H2 high in transmission speed in the synthetic gas easily passes through a hollow yarn membrane to become transmitted gas while CO low in transmission speed becomes non- transmitted gas to be discharged from the upper part of the membrane module 10. |
