Method and apparatus for purification of high carbon dioxide content gas

Patent · Tue Jan 07 04:00:00 EST 1986

OSTI ID:6263467

Yao, J; Chen, J J; Elliot, D G

This patent describes a method for recovery of carbon dioxide from a hydrocarbon feed stream containing carbon dioxide, methane and higher boiling constituents, hydrogen sulfide, and water. The method consists of dehydrating and phase separating the feed stream in a stabilizer column containing a glycol compound; removing hydrogen sulfide and a portion of the light hydrocarbons from the gas phase in a carbon dioxide fractionation step; and separating and recovering carbon dioxide from the residual hydrocarbons left in the overhead from the fractionator by distilling the overhead in a demethanizer under conditions which produce liquid carbon dioxide as a bottom product.

• Assignee: DM International, Inc., Houston, TX
• Patent Number(s): US 4563202
• OSTI ID: 6263467
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
ALCOHOLS
ALKANES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
DEHYDRATION
DISTILLATION
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FRACTIONATION
FUEL GAS
FUELS
GAS FUELS
GASES
GLYCOLS
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYDROXY COMPOUNDS
METHANE
NATURAL GAS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PURIFICATION
REMOVAL
SEPARATION EQUIPMENT
SEPARATION PROCESSES
SULFIDES
SULFUR COMPOUNDS
WATER