Gas separation: processes – Solid sorption – Inorganic gas or liquid particle sorbed
Reexamination Certificate
2005-07-06
2008-10-28
Lawrence, Frank M. (Department: 1797)
Gas separation: processes
Solid sorption
Inorganic gas or liquid particle sorbed
C095S143000, C095S235000, C096S004000, C096S122000, C096S130000, C096S134000, C423S228000, C585S820000
Reexamination Certificate
active
07442233
ABSTRACT:
The present invention is directed to an improved integrated process for the removal of heavy hydrocarbons, carbon dioxide, hydrogen sulfide, and water from a raw natural gas feed stream. More specifically, the integrated process of the present invention comprises a three step process involving the adsorption of heavy hydrocarbons and water on an adsorbent bed selective for the same, a subsequent aqueous lean amine treatment for the absorptive removal of acid gases, such as carbon dioxide and hydrogen sulfide, and an adsorptive removal of water. The process of the present invention results in a highly purified natural gas product stream.
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“Operations and Recovery Improvement Via Heavy Hydrocarbon Extraction”, Iyengar, et al., Presented at Laurance Reid Gas Conditioning Conference, Norman, Oklahoma—Mar. 1-4, 1998 pp. 161-174.
BASF Catalysts LLC
Keller Raymond F.
Lawrence Frank M.
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