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Title: Purification of natural gas by liquid/liquid extraction with a polar solvent. [removal of CO/sub 2/, H/sub 2/S, water vapor, N/sub 2/, and He]

Abstract

A gaseous stream (such as a ''sour'' natural gas stream) composed chiefly of a normally gaseous light hydrocarbon or alkane, such as methane, ethane, propane, or mixtures thereof, containing undesirable constituents, impurities or contaminants, such as carbon dioxide, hydrogen sulfide, water vapor, nitrogen and helium, is mixed with a polar organic liquid, such as methanol, or an aqueous solution of said liquid, such as an aqueous solution of methanol. The resulting mixture is cooled and liquefied and the resulting two-phase liquid mixture (comprising a light phase rich in the desired light hydrocarbon and an impurities-rich heavy phase of said polar organic liquid) is extracted with said polar organic liquid to recover said light hydrocarbon in the liquefied state, e.g., as liquefied, ''sweet'' natural gas.

Inventors:
;
Publication Date:
OSTI Identifier:
7247332
Patent Number(s):
US 3977203
Assignee:
Kansas Univ. Endowment Assoc.
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 25 Mar 1976
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; NATURAL GAS; PURIFICATION; AQUEOUS SOLUTIONS; CARBON DIOXIDE; HELIUM; HYDROGEN SULFIDES; METHANOL; NITROGEN; REMOVAL; SOLVENT EXTRACTION; WATER VAPOR; ALCOHOLS; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; CRYOGENIC FLUIDS; DISPERSIONS; ELEMENTS; ENERGY SOURCES; EXTRACTION; FLUIDS; FOSSIL FUELS; FUEL GAS; FUELS; GAS FUELS; GASES; HYDROGEN COMPOUNDS; HYDROXY COMPOUNDS; MIXTURES; NONMETALS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; RARE GASES; SEPARATION PROCESSES; SOLUTIONS; SULFIDES; SULFUR COMPOUNDS; VAPORS; 030300* - Natural Gas- Drilling, Production, & Processing

Citation Formats

Hinton, R A, and Kurata, F. Purification of natural gas by liquid/liquid extraction with a polar solvent. [removal of CO/sub 2/, H/sub 2/S, water vapor, N/sub 2/, and He]. United States: N. p., 1976. Web.
Hinton, R A, & Kurata, F. Purification of natural gas by liquid/liquid extraction with a polar solvent. [removal of CO/sub 2/, H/sub 2/S, water vapor, N/sub 2/, and He]. United States.
Hinton, R A, and Kurata, F. Tue . "Purification of natural gas by liquid/liquid extraction with a polar solvent. [removal of CO/sub 2/, H/sub 2/S, water vapor, N/sub 2/, and He]". United States.
@article{osti_7247332,
title = {Purification of natural gas by liquid/liquid extraction with a polar solvent. [removal of CO/sub 2/, H/sub 2/S, water vapor, N/sub 2/, and He]},
author = {Hinton, R A and Kurata, F},
abstractNote = {A gaseous stream (such as a ''sour'' natural gas stream) composed chiefly of a normally gaseous light hydrocarbon or alkane, such as methane, ethane, propane, or mixtures thereof, containing undesirable constituents, impurities or contaminants, such as carbon dioxide, hydrogen sulfide, water vapor, nitrogen and helium, is mixed with a polar organic liquid, such as methanol, or an aqueous solution of said liquid, such as an aqueous solution of methanol. The resulting mixture is cooled and liquefied and the resulting two-phase liquid mixture (comprising a light phase rich in the desired light hydrocarbon and an impurities-rich heavy phase of said polar organic liquid) is extracted with said polar organic liquid to recover said light hydrocarbon in the liquefied state, e.g., as liquefied, ''sweet'' natural gas.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {8}
}