Process for the selective extraction treatment of gaseous hydroc

Details Process for the selective extraction treatment of gaseous hydroc Process for the selective extraction treatment of gaseous hydroc

1981-10-19

1983-10-04

Thomas, Earl C.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423229, B01D 5334

Patent

active

044077840

ABSTRACT:
The present invention relates to a process for the selective extraction treatment of a gaseous hydrocarbon mixture containing 5 to 3000 ppm (parts per million) by volume of hydrogen sulfide and 0.3 to 3% carbon dioxide, in order to obtain a purified gas containing less than 4 ppm by volume hydrogen sulfide and less than 2% carbon dioxide.
The gaseous hydrocarbon mixture is submitted to a series of counter-current washings by contact with a tertiary amine aqueous solution in an absorption zone from which is drawn a liquid effluent enriched in hydrogen sulfide.

REFERENCES:
patent: 3489506 (1970-01-01), Galstaun et al.
patent: 3622267 (1971-11-01), Bartholome et al.
patent: 4085192 (1978-04-01), Van Scoy
patent: 4297329 (1981-10-01), Sigmund et al.

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