Removal of acid gases from gas streams

Patent · Tue Oct 04 04:00:00 EDT 1988

OSTI ID:6684916

Nieh, E C.Y.

This patent describes a method for the purification of a stream of gas comprising a normally gaseous hydrocarbon or synthesis gas contaminated with acid gases which comprises the steps of: countercurrently contacting the gas stream in an absorption zone with a stream of a treating agent consisting essentially of an aqueous solution of N-methyldiethanolamine and imidazole or a methyl substituted imidazole to thereby remove a substantial portion of the acid contaminants from the hydrocarbon gas stream by absorption into the treating agent, discharging an at least partially purified gas stream from the absorption zone, discharging the treating agent enriched with absorbed acid gas components from the absorption zone; and subsequently regenerating the enriched treating agent.

• Assignee: Texaco Inc., White Plains, NY
• Patent Number(s): US 4775519
• OSTI ID: 6684916
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
ADSORPTION
AMINES
AQUEOUS SOLUTIONS
AZOLES
DESORPTION
DISPERSIONS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HETEROCYCLIC COMPOUNDS
MIXING
MIXTURES
NATURAL GAS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PROCESSING
PURIFICATION
REMOVAL
SOLUTIONS
SORPTION
SYNTHESIS GAS