Review Article

Polymeric Gas-Separation Membranes for Petroleum Refining

Table 1

Processes where membrane technology is implemented [25ā€“27].

ProcessGas to be separated from

Natural gas purificationH2S/CH4
CO2/CH4
H2O/CH4
C3+/CH4

HydrocrackerH2/light hydrocarbons

HydrotreatmentH2/H2S

Steam-methane reformingH2/CO

Ammonia plantH2/N2

Polyolefin plantVOCs/N2

Refinery waste-gasesVOCs/Air
H2 from other gases
CH4 from other gases
CO2 from other gases