Methane recovery process for the separation of nitrogen and methane

Patent · Tue Jun 25 04:00:00 EDT 1991

OSTI ID:5787271

Saunders, J B; Maloney, J J

This patent describes a process for the separation of nitrogen and methane. It comprises separating a feed comprising nitrogen and methane into nitrogen-enriched vapor and methane-enriched liquid; introducing the methane-enriched liquid into a column; partially condensing the nitrogen-enriched vapor to produce a first vapor and a first liquid, and introducing the first liquid into the column; partially condensing the first vapor to produce a second vapor and a second liquid, and introducing the second liquid into the column; and separating the fluids passed into the column into nitrogen-richer and methane-richer components and recovering methane-richer component as product methane.

• Assignee: Union Carbide Industrial Gases Technology Corp., Danbury, CT (United States)
• Patent Number(s): US 5026408; A
• Application Number: PPN: US 7-531772
• OSTI ID: 5787271
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
030400 -- Natural Gas-- Products & By-Products
09 BIOMASS FUELS
090900* -- Biomass Fuels-- Processing-- (1990-)
ALKANES
CHEMICAL COMPOSITION
ELEMENTS
FLUIDS
HYDROCARBONS
LIQUIDS
METHANE
NATURAL GAS LIQUIDS
NITROGEN
NONMETALS
ORGANIC COMPOUNDS
SEPARATION PROCESSES
VAPOR CONDENSATION