Title:
LNG PROCESS WITH IMROVED METHANE CYCLE
Document Type and Number:
WIPO Patent Application WO2004040212
Kind Code:
A3
Abstract:
The methane refrigerant used in each cooling stage of the open methane refrigeration cycle in a Cascade LNG plant is produced by partially evaporating only a portion of the cooled liquid methane passing out of that stage. As a result, capital and operating costs can be reduced, because the flash drums previously used for liquid/gas separation can be totally eliminated. Further capital and operating cost savings are achieved by eliminating the LNG product pumps, relying instead on the pressure of the product LNG passing out of the last cooling stage to drive this product to storage.
Inventors:
O'BRIEN JOHN V (US)
Application Number:
PCT/US2003/034415
Publication Date:
November 04, 2004
Filing Date:
October 29, 2003
Export Citation:
Assignee:
CHART INC (US)
O'BRIEN JOHN V (US)
O'BRIEN JOHN V (US)
International Classes:
F25J1/02; (IPC1-7): F25J1/00
Foreign References:
| US3360944A | 1968-01-02 | |||
| US6158240A | 2000-12-12 | |||
| US6196021B1 | 2001-03-06 | |||
| US6250244B1 | 2001-06-26 | |||
| US6333445B1 | 2001-12-25 | |||
| US3677019A | 1972-07-18 | |||
| US3433026A | 1969-03-18 | |||
| US6289692B1 | 2001-09-18 | |||
| US6131407A | 2000-10-17 | |||
| US3792590A | 1974-02-19 |
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