A process 8 wherein the hydrogen diffusion membrane and the methanation catalyst of {HEAD ~ the gas separation device} function within {TAIL ~ similar temperature ranges} 
A process 8 wherein the hydrogen diffusion membrane and the methanation catalyst of { HEAD ~ the gas separation device } function within { TAIL ~ similar temperature ranges }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL