The process utilizes three adsorbent layers, the first primarily removes water; the second primarily removes CO2; and {HEAD ~ the third layer} is designed to remove {TAIL ~ displaced gas components} such as N2O and hydrocarbons which are displaced by the second layer 
The process utilizes three adsorbent layers , the first primarily removes water ; the second primarily removes CO2 ; and { HEAD ~ the third layer } is designed to remove { TAIL ~ displaced gas components } such as N2O and hydrocarbons which are displaced by the second layer
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH