Process for the generation of a cold gas

Details Process for the generation of a cold gas Process for the generation of a cold gas

F - Mech Eng,Light,Heat,Weapons

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C

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F16C 9/02 (2006.01) F17C 9/02 (2006.01)

Patent

CA 1237062

- 11 - A PROCESS FOR THE GENERATION OF A COLD GAS ABSTRACT In a process for the generation of a cold gas comprising introducing a relatively warm gas and a liquid cryogen into the upstream end of a mixing zone; permitting the gas and liquid cryogen to mix in the mixing zone, the amount of gas being sufficient to vaporize the liquid cryogen; and withdrawing the cold gas downstream in the mixing zone, the improvement comprising: (a) choking the gas prior to its entry into the mixing zone; (b) providing a linear mixing zone having, at its downstream end, a dead end; and (c) withdrawing the cold gas as a slipstream from the mixing zone at a point intermediate between its upstream end and the dead end provided that the distance from the upstream end to the dead end is at least twice the distance from the upstream end to the point of withdrawal of the slipstream.

471540

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