INTEGRATED MULTIPLE -LOOP REFRIGERATION PROCESS FOR GAS LIQUEFACTION
Application 2300/CHENP/2005 published 2007-09-14, filed 2005-09-16
A gas (1) is liquefied by cooling successively through at least two temperature ranges by vaporization of respective refrigerants (117, 213 & 315) with additional refrigeration being provided by vaporization (357; 379), at temperatures above the highest temperature in the coldest heat exchange zone (312), of an auxiliary refrigerant (373, 377) derived from the refrigerant (315) vaporized in said zone (312). The auxiliary refrigerant may have the same composition as the refrigerant vaporized in the coldest 10 heat exchange zone but is vaporized at a different pressure or can have a different composition.
Applicant
1)AIR PRODUCTS AND CHEMICALS ,INC
:7201 HAMILTON BOULEVARD , ALLENTOWN , PA 18195-1501,USA U.S.A.
Inventor
1)ROBERTS, MARK, JULIAN
International Info
Classification: F25J 1/02
Publication Number: WO 2004/083752 A1
Application Date: 2004-03-16
Priority Information
10/391,390 U.S.A. 2003-03-18