System for production of a quenchant gas mixture

Details System for production of a quenchant gas mixture System for production of a quenchant gas mixture

1995-12-29

1997-04-29

Silverberg, Sam

Glass manufacturing

Processes of manufacturing fibers, filaments, or preforms

Process of manufacturing optical fibers, waveguides, or...

148660, 148663, 252372, C21D 174

Patent

active

056245076

ABSTRACT:
The invention provides a process and apparatus for producing a quench gas mixture for increasing the cooling rate of an article. The quench gas mixture is produced by introducing helium gas into the bottom of a vessel containing a cryogenic liquid. Heat is transferred directly from the helium gas to the cryogenic liquid as the helium bubbles rise through the liquid to the surface. The resulting cryogenic vapor mixes with the helium gas in the ullage space at the top of the vessel, and the gas mixture is taken off from the ullage space and supplied to a cooling process.

REFERENCES:
patent: 4643401 (1987-02-01), Obman et al.
patent: 5157957 (1992-10-01), Mettes et al.
patent: 5173124 (1992-12-01), Baxter et al.
R. Holoboff (Liquid Air Corp), et al. "Gas Quenching With Helium", Advanced Materials & Processes, Feb. 1993, pp. 23-26.

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