Gas separation – With nonliquid cleaning means for separating media – Solid agent cleaning member movingly contacts apparatus
Patent
1977-08-01
1978-11-14
Nozick, Bernard
Gas separation
With nonliquid cleaning means for separating media
Solid agent cleaning member movingly contacts apparatus
55459R, 55435, 165140, B01D 5100
Patent
active
041253850
ABSTRACT:
This invention relates to an improved heat exchanger gas outlet tube in a cyclone separator. The apparatus is adapted for use with highly corrosive halide-containing gas-solids suspensions at elevated temperatures.
In accordance with this invention, a flanged, hollow nickel alloy gas outlet tube is provided with multiple inlets and outlets arranged circumferentially around a portion of the gas outlet tube. A hollow passage contained within said gas outlet tube is provided with a pair of partial longitudinal baffles positioned in such a manner that cooling air or other compatible cooling fluid may flow within the passage and be caused to flow longitudinally down the length of the tube, in one portion of the passage, before passing below the partial baffles and the flow back upwardly through the other portion of the passage. The flow of cooling air or other compatible cooling fluid is maintained such that sufficient heat transfer occurs to reduce the temperature of the surface of the gas outlet tube to a level below about 1100.degree. F. to alleviate corrosion problems. In addition, a controlled quantity of non-volatile metal halides is deposited upon the exterior surface of the gas outlet tube, by sublimation, to further protect the nickel alloy from the highly corrosive environment.
REFERENCES:
patent: 1201705 (1916-10-01), Day et al.
patent: 3327456 (1967-06-01), Guber et al.
patent: 3470678 (1969-10-01), Clark et al.
Morris Alan J.
Rado Theodore A.
Addison William G.
Kerr-McGee Chemical Corporation
Nozick Bernard
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