Method for removing mercaptans from LNG

Details Method for removing mercaptans from LNG Method for removing mercaptans from LNG

1996-06-04

1997-08-19

Caldarola, Glenn A.

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By addition of extraneous agent, e.g., solvent, etc.

208208R, 208341, 585833, 62922, 62632, 95141, C07C 710, C10G 1700

Patent

active

056591098

ABSTRACT:
A process for liquefying natural gas containing mercaptans. Mercaptans are concentrated into a distillate stream by distilling the feed gas stream without specific pretreatment for mercaptans removal. Thus, the mercaptans removal equipment is much smaller since mercaptans treatment can take place at a point in the process where the flowrate is much lower. A portion of the treated distillate stream can be reinjected to the upstream distilling stage to facilitate mercaptan absorption.

REFERENCES:
patent: 3407613 (1968-10-01), Muller et al.
patent: 3622504 (1971-11-01), Strum
patent: 4383842 (1983-05-01), O'Brien
patent: 4421535 (1983-12-01), Mehra
patent: 4830733 (1989-05-01), Nagji et al.
patent: 4934146 (1990-06-01), Wilhelm et al.

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