Feed processing for nitrogen rejection unit

Patent · Tue Sep 24 04:00:00 EDT 1991

OSTI ID:5673519

Pahade, R F; Maloney, J J

This patent describes a method for cryogenic processing of a feed containing nitrogen and methane. It comprises partially condensing a feed comprising nitrogen and methane to produce a first vapor and a first liquid; passing first liquid into a stripping column; partially condensing first vapor to produce a second vapor and a second liquid; passing second liquid into the stripping column; passing second vapor into a nitrogen rejection unit for separation into nitrogen-enriched and methane-enriched components; removing a stream of nitrogen-enriched component from the nitrogen rejection unit; and removing a stream of methane-enriched component from the nitrogen rejection unit.

• Assignee: Union Carbide Industrial Gases Technology Corp., Danbury, CT (United States)
• Patent Number(s): A; US 5051120
• Application Number: PPN: US 7-536522
• OSTI ID: 5673519
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
033000 -- Natural Gas-- Properties & Composition
09 BIOMASS FUELS
090900 -- Biomass Fuels-- Processing-- (1990-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105 -- Separation Procedures
ALKANES
CHEMICAL COMPOSITION
CHEMICAL FEEDSTOCKS
CRYOGENICS
ELEMENTS
HYDROCARBONS
METHANE
NITROGEN
NONMETALS
ORGANIC COMPOUNDS
SEPARATION PROCESSES