C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
165/1, 362/43
C02F 1/20 (2006.01) B01D 19/00 (2006.01)
Patent
CA 1222200
Abstract This invention concerns degassing of water, especially deoxygenation of seawater which is to be used as injection water in underground oil reservoirs to obtain a higher degree of hydrocarbon recovery. A main objective with this invention is to achieve a new and improved process that eliminates the consumption of stripping gas and at the same time attains the highest possible degree of oxygen removal without polluting the water. According to the invention this is obtained by pumping and degassing water in a system with recirculating inertgas. Degassed water is separated from the inert gas; and the latter is routed through a zone for purification and regeneration, as hydrogen is introduced into the gas conaining oxygen from the gas-lift area, and the gas-mixture subsequently flows through a catalytical combustion zone where hydrogen and oxygen are burned to water, whereafter the purified gas is recirculated.
436415
Christensen Tor
Fareid Erik
Henriksen Norolf
Kjýberg Sven A.
Fetherstonhaugh & Co.
Norsk Hydro A.s
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