natural gas liquefaction system, method for natural gas liquefaction, and natural gas liquefaction system for large capacity liquefaction plants

摘要

NATURAL GAS LIQUIDATION SYSTEM, NATURAL GAS LIQUIDATION METHOD, AND LARGE CAPACITY LIQUIDATION SYSTEM This is a first natural gas pre-cooling system. cooling that accepts at least one natural gas feed stream, a second pre-cooling cooling system that accepts at least a first refrigerant stream, and a cryogenic heat exchanger fluidly connected to the first refrigerated cooling system. and the second pre-cooling refrigeration system, which accepts the natural gas supply flow from the first pre-cooling refrigeration system and the first refrigerant flow from the second pre-cooling refrigeration system. cooling to liquefy the natural gas feed stream where the second cooling system c The pre-cooling only accepts current (s) with a different composition than the current (s) accepted by the first pre-cooled cooling system.