Gas stripping

Gas stripping
is extraction of hydrocarbon gases: ethane, propane, butane and natural gas gasoline components (С5H12 and heavier hydrocarbons) from hydrocarbon gases. It is performed at gas fields and gas processing plants. Gas stripping was initially performed by a compression method (gas was compressed up to 1.0 to 4.0 MPa and then cooled down to 20 to 30°С). Meanwhile only gasoline fractions were extracted from gas. For LPG production (propane-butane fraction) gas stripping started to be performed by oil absorption and then by low temperature absorption (the latter performed at temperatures down to −45°С and pressures over 7 MPa). Kerosene fractions are mainly used as an absorptive agent. The rate of extraction of C3 and heavier hydrocarbons is 80 to 95 per cent. The process of activated carbon adsorption can be used for lean gases stripping as well as for advanced recovery of C3 and heavier hydrocarbons in the process of low temperature oil absorption.

Glossary of Oil and Gas. 2013.

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