Refrigeration – Cryogenic treatment of gas or gas mixture – Separation of gas mixture
Patent
1995-08-21
1996-12-31
Kilner, Christopher
Refrigeration
Cryogenic treatment of gas or gas mixture
Separation of gas mixture
62630, F25J 302
Patent
active
055883087
ABSTRACT:
Natural gas liquids (NGLs) are recovered by cooling and partial condensation of a purified natural gas feed wherein a portion of the necessary feed cooling and condensation duty is provided by expansion and vaporization of condensed feed liquid after methane stripping, thereby yielding a vaporized NGL product. Additional refrigeration for feed cooling is provided by vaporizing methane-stripped liquid, which in turn provides vapor boilup for the stripping step. Recompression and cooling of the vaporized NGL product can be utilized if a liquid product is required.
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Collins, C. et al, "Trends in NGL Recovery from Natural and Associated Gases", Gastech LNG/LPG Conference 84, Published by Gastech Ltd., Rickmansworth, England, pp. 287-803.
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Wilkinson, J. D., Hudson, H. M., "Improved NGL Recovery Designs Maximize Operating Flexibility and Product Recoveries" in the Proceedings of the 71st GPA Annual Convention.
Daugherty Tamara L.
Harris Christopher F.
Air Products and Chemicals Inc.
Fernbacher John M.
Kilner Christopher
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