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Method and apparatus for continuously freezing and melting a fluid mixture, for use in separating a fluid mixture into dilute and concentrated components which have been made separble due to the freezing. A turbine is used to produce mechanical energy to drive a refrigeration compressor, while exhau

Method and apparatus for continuously freezing and melting a fluid mixture, for use in separating a fluid mixture into dilute and concentrated components which have been made separble due to the freezing. A turbine is used to produce mechanical energy to drive a refrigeration compressor, while exhaust heat from the turbine is used for secondary cooling. Heat from a refrigeration condenser is used to melt the liquid frozen by a refrigerant evaporator. The evaporator and condenser may comprise a plurality of plates or may comprise a bubbler for bubbling refrigerant directly into contact with the fluid mixture.

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A method for continuously freezing a fluid mixture into a frozen fluid and melting said frozen fluid to produce a concentrated component and a dilute component, comprising: gasifying coal to produce fuel for a gas turbine, providing, from said gas turbine, mechanical energy with heat by-product ener

A method for continuously freezing a fluid mixture into a frozen fluid and melting said frozen fluid to produce a concentrated component and a dilute component, comprising: gasifying coal to produce fuel for a gas turbine, providing, from said gas turbine, mechanical energy with heat by-product energy; compressing refrigerant with said mechanical energy; cooling said refrigerant with said heat by-product energy; warming said frozen fluid to produce melted frozen fluid by condensing said refrigerant; evaporating said refrigerant by absorbing heat from and freezing said fluid mixture to form said frozen fluid, and carrying out said condensing and said evaporating at temperatures within a narrow temperature range around the freezing temperature of the fluid mixture.