Patent ID: 7491036

Claim:
A fluid flow system for circulating a supercritical fluid through a high pressure processing system comprising: a primary supercritical flow line coupled to said high pressure processing system, and configured to supply said supercritical fluid at a fluid temperature equal to or greater than 80° C. to said high pressure processing system; a high temperature pump having an inlet for receiving said supercritical fluid from said primary supercritical flow line and an outlet coupled to said primary supercritical flow line and configured to return said supercritical fluid to said primary supercritical flow line and thereby move said supercritical fluid through said primary supercritical flow line to said high pressure processing system, wherein said high temperature pump comprises a coolant inlet configured to receive a coolant and a coolant outlet configured to discharge said coolant; and a heat exchanger coupled to said coolant inlet, and configured to lower a coolant temperature of said coolant to a temperature less than or equal to said fluid temperature of said supercritical fluid.