Recovery boiler smelt spout

Details Recovery boiler smelt spout Recovery boiler smelt spout

1987-07-10

1988-06-14

Favors, Edward G.

Dispensing

Molten metal dispensing

With heating or cooling

222590, B22D 3506, B67D 562

Patent

active

047506490

ABSTRACT:
A spout for a recovery boiler such as those used in the papermaking industry. As in prior art spouts of this type, the spout is provided with an internal cavity to thereby permit water cooling of the spout. By this invention, a duct is provided for the internal cavity, the duct applying a portion of the coolant liquid to specific areas of the spout which in the past have failed. Further, the radius of curvature of the lowermost portion of the spout is increased by a factor of two. The useful life of the spout of this invention is in excess of twenty five weeks, as compared to a prior art spout whose useful life is about two weeks.

REFERENCES:
patent: 138184 (1873-04-01), Pearse
patent: 1625755 (1927-04-01), Williams et al.
patent: 1796644 (1931-03-01), Carrington
patent: 1848072 (1932-03-01), Clark
patent: 2225660 (1940-12-01), Rogers
patent: 3284860 (1966-11-01), Gurak
patent: 3713639 (1973-01-01), Von Starck et al.
patent: 4177974 (1979-12-01), Higuchi et al.
patent: 4303230 (1981-12-01), Bleloch
patent: 4426067 (1984-01-01), Hopkins
patent: 4446995 (1984-05-01), Wooding
patent: 4498610 (1985-02-01), Wooding

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