Method and apparatus for cooling a gas by means of a refrigeration cycle

Abstract

Title: Process and Apparatus for Cooling a Gas by Means of a Refrigeration Cycle. In a process for cooling a feed gas by means of a refrigeration cycle, a cycle fluid (4) is cooled to a temperature below -100°C. At least a portion (8-1) of the cooled cycle fluid is expanded in a turbine (T1) to cool at least a portion of the cycle fluid, producing a two-phase fluid (6) at the turbine outlet. The two-phase fluid is separated in a phase separator (V1), and at least a portion of the gas (8) produced in the phase separator is sent to a first heat exchanger (E1) to exchange heat indirectly with the feed gas to be cooled (1), producing a cooled feed gas (2) and a heated cycle gas (9), which is compressed in a compressor (C1) and then cooled in a cycle. Single Figure

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