Patent ID: 6324852
Filing Date: 2001-12-04
Classification: B01J,F17C

Abstract:
An apparatus mounted into a reaction vessel for cooling a reaction within said vessel with a high pressure liquid cryogen comprising:a. an injector tube having an inner concentric tube and an outer concentric tube having outlets at a first end of said injector tube, and a seated second end;b. a drive shaft positioned within the inner concentric tube wherein said drive shaft comprises a plug adapted to fit into the outlet of the inner concentric tube to seal off the inner concentric tube;c. a means for moving said drive shaft to regulate the outlet of the inner concentric tube comprising a linear motor to linearly move the drive shaft;d. liquid cryogen supply connected to the inner concentric tube; ande. a shielding gas supply having a maximum of about 3000 psi and connected to the outer concentric tube adapted to provide a continuous flow of a shielding gas to prevent the liquid cryogen from freezing said nozzle and reactants in said vessel.