Patent ID: 6112550
Filing Date: 2000-09-05
Classification: F25J,Y10S

Abstract:
A method for providing refrigeration for a cryogenic rectification plant comprising:(A) compressing a multicomponent refrigerant fluid, expanding the compressed multicomponent refrigerant fluid to produce refrigeration and warming the expanded multicomponent refrigerant fluid by indirect heat exchange with a process fluid thereby passing refrigeration from the refrigerant fluid into the process fluid;(B) passing refrigeration from the process fluid into the cryogenic rectification plant;(C) turboexpanding a fluid stream to generate refrigeration and passing refrigeration from the turboexpanded fluid stream into the cryogenic rectification plant; and(D) using refrigeration generated by the expanded multicomponent refrigerant fluid and refrigeration generated by the turboexpanded fluid stream to produce at least one product by cryogenic rectification within the cryogenic rectification plant.