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Patent Searching and Data


Title:
INTEGRATED MULTIPLE-LOOP REFRIGERATION PROCESS FOR GAS LIQUEFACTION
Document Type and Number:
WIPO Patent Application WO2004083753
Kind Code:
A3
Abstract:
A gas (1) is liquefied by cooling successively through at least two temperature ranges by vaporization of respective refrigerants (117, 213 & 315) with the vaporizing refrigerant providing the coldest temperature range further vaporizing (317) at temperatures above the highest temperature of that range. The partially vaporized refrigerant (316) that provided the coldest temperature range preferably is further vaporized (317) against a compressed return vapor (328) in a recirculating refrigeration system.

Inventors:
ROBERTS MARK JULIAN (US)
Application Number:
IB2004000946W
Publication Date:
November 25, 2004
Filing Date:
March 16, 2004
Export Citation:
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Assignee:
AIR PROD & CHEM (US)
ROBERTS MARK JULIAN (US)
International Classes:
C09K5/04; F25J1/02; F25B1/10; (IPC1-7): F25J1/02
Foreign References:
GB1572900A1980-08-06
DE19937623A12001-02-15
US4033735A1977-07-05
US4094655A1978-06-13
US6250105B12001-06-26
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