Membrane gas separation processes

Patent · Tue Jul 01 04:00:00 EDT 1986

OSTI ID:5511532

Graham, T E

A membrane gas separator apparatus is described for recovering a methane-enriched non-permeate gas from a mixture comprising methane and carbon dioxide. The apparatus consists of at least one first separator having a membrane exhibiting selectivity to the permeation of carbon dioxide; at least one subsequent separator having a membrane exhibiting selectivity to the permeation of carbon dioxide; a combustion engine for generating power; means for providing the mixture at a permeating pressure to at least one first separator; means for conducting a non-permeate gas from at least one first separator to at least one subsequent separator; means for withdrawing carbon dioxide-enriched permeate gas from at least one first separator; means for withdrawing a methane-enriched non-permeate gas from at least one subsequent separator; means for conducting a combustible permeate gas from at least one subsequent separator to a fuel inlet of the combustion engine; and means for transmitting power from the combustion engine to the means for providing the mixture at a permeating pressure.

• Assignee: Monsanto Co., St. Louis, MO
• Patent Number(s): US 4597777
• OSTI ID: 5511532
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
ALKANES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
DISPERSIONS
ENGINES
FLUID FLOW
GAS FLOW
HEAT ENGINES
HYDROCARBONS
INTERNAL COMBUSTION ENGINES
MEMBRANES
METHANE
MIXTURES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PERMEABILITY
PRESSURE DEPENDENCE
QUANTITY RATIO
SEPARATION EQUIPMENT
SEPARATION PROCESSES