| 摘要 |
The present invention provides a method of and apparatus for the gasification of a liquid hydrocarbon stream (5) to provide a gaseous hydrocarbon stream (55) and power, the method comprising at least the steps of : (a) pressurising a liquid hydrocarbon stream (5) at a feed pressure to provide a pressurised liquid hydrocarbon stream (15) at a cold recovery pressure; (b) heat exchanging the pressurised liquid hydrocarbon stream (15) against one or more vapour recycle streams (115) to provide a warmed liquid hydrocarbon stream (35) and one or more liquefied recycle streams (125); (c) passing the one or more liquefied recycle streams (125), after pressurisation if necessary, to one or both of the liquid hydrocarbon stream (5) and the pressurised liquid hydrocarbon stream (15); (d) pressurising one or more portions of the warmed liquid hydrocarbon stream (35) to provide one or more pressurised warmed liquid hydrocarbon streams (45), at least one of which is at a minimum pipeline pressure or higher; (e) vaporising one or more of the pressurised warmed liquid hydrocarbon streams (45), at least one of which is at the minimum pipeline pressure or higher, against one or more heat sources (345) to provide one or more gaseous hydrocarbon streams (55), at least one of which is at the minimum pipeline pressure or higher; (f) dynamically expanding at least a part (55, 55a, 55e) of at least one of the one or more gaseous hydrocarbon streams (55) to provide power and one or more expanded gaseous hydrocarbon streams (115), wherein at least a part of said one or more expanded gaseous hydrocarbon streams forms at least a part of the one or more vapour recycle stream (115).
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