Method and apparatus of producing carbon dioxide in high yields from low concentration carbon dioxide feeds

Patent · Tue Aug 28 04:00:00 EDT 1990

OSTI ID:6496912

Kirshnamurthy, R; MacLean, D L

This patent describes a process for producing substantially pure carbon dioxide from a carbon dioxide feed containing from about 35 to about 98 percent by volume of carbon dioxide. It comprises distilling the carbon dioxide feed to thereby form a liquid product containing substantially pure carbon dioxide and a first waste stream containing carbon dioxide; forwarding the first waste stream to a pressure swing adsorption means to thereby separate the first waste stream into a carbon dioxide-enriched stream and a carbon dioxide-depleted second waste stream; and recycling the carbon dioxide-enriched stream via combination with the carbon dioxide feed.

• Assignee: BOC Group, Inc., New Providence, NJ (USA)
• Patent Number(s): US 4952223; A
• Application Number: PPN: US s 7-396584
• OSTI ID: 6496912
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105 -- Separation Procedures
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
DISTILLATION
LIQUID WASTES
OXIDES
OXYGEN COMPOUNDS
PRODUCTION
SEPARATION PROCESSES
WASTES