Treatment of gas streams for removal of acid gases

Patent · Tue Sep 29 04:00:00 EDT 1987

OSTI ID:5896845

Nieh, E C.Y.

A method is described 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 treating agent to 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 hydrocarbon gas stream from the absorption zone, and discharging the treating agent enriched with absorbed acid gas components from the absorption zone. The treating agent consists essentially of an aqueous solution of from about 40 to about 60 wt. % of N-methyldiethanolamine and from about 5 to about 15 wt. % of N,N-diethyl hydroxylamine.

• Assignee: Texaco Inc., White Plains, NY
• Patent Number(s): US 4696803
• OSTI ID: 5896845
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ABSORPTION
ADSORBENTS
ALCOHOLS
ALKYL RADICALS
AMINES
AQUEOUS SOLUTIONS
CHEMICAL COMPOSITION
DISPERSIONS
ETHANOL
ETHYL RADICALS
FLUID FLOW
FLUIDS
GAS FLOW
GASES
HYDROCARBONS
HYDROXY COMPOUNDS
IMPURITIES
METHYL RADICALS
MIXTURES
ORGANIC ACIDS
ORGANIC COMPOUNDS
PROCESS SOLUTIONS
PURIFICATION
RADICALS
REMOVAL
SEPARATION PROCESSES
SOLUTIONS
SORPTIVE PROPERTIES
SURFACE PROPERTIES