Process for purifying natural gas

Patent · Tue Feb 18 04:00:00 EST 1992

OSTI ID:5354872

Markovs, J; James, F E

This patent describes a process for separating water and carbon dioxide from a feedstream comprising hydrocarbons, water and carbon dioxide. It includes passing the feedstream to a first adsorption zone containing a solid adsorbent having selectivity for water at a first zone adsorption temperature effective to adsorb water and a first zone adsorption pressure and withdrawing a first zone adsorption effluent stream having a reduced concentration of water relative to the feedstream; passing at least a portion of the first zone adsorption effluent stream to a second adsorption zone containing a solid adsorbent having selectivity for carbon dioxide at a second zone adsorption temperature effective to adsorb carbon dioxide and a second zone adsorption pressure, the second zone adsorption temperature being lower than the first zone adsorption temperature, and withdrawing a second zone adsorption effluent stream having a reduced concentration of carbon dioxide relative to the first effluent stream; passing a first purge gas through the first adsorption zone at a first zone regeneration temperature.

• Assignee: UOP, Des Plaines, IL (United States)
• Patent Number(s): A; US 5089034
• Application Number: PPN: US 7-612934
• OSTI ID: 5354872
• 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
ADSORPTION
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROCARBONS
INDUSTRIAL PLANTS
NATURAL GAS
NATURAL GAS PROCESSING PLANTS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PURIFICATION
REMOVAL
SEPARATION PROCESSES
SORPTION
WATER REMOVAL