Heating – Work chamber having heating means – Having means by which work is progressed or moved mechanically
Patent
1993-02-16
1994-05-31
Favors, Edward G.
Heating
Work chamber having heating means
Having means by which work is progressed or moved mechanically
75629, 110225, 266176, 266177, 423460, 423461, 502 55, F27B 900
Patent
active
053164717
ABSTRACT:
An apparatus for improving mass transfer in a multiple hearth furnace has a plurality of risers adjacent the furnace center shaft which are in fluid communication with a source of treatment fluid. The risers have radially extending branch pipes, each pipe having a plurality of downcomers corresponding to the rabbles on an adjacent rabble arm. The downcomers have outlets or nozzles at their distal ends and they are preferably located adjacent a rear face of the rabble, near a trailing edge. In operation, as the rabbles plough over the material on the furnace hearth, the downcomers inject a treatment fluid, such as steam or reducing gas, into the material at the point of stirring. This ensures full exposure of the material to the treatment fluid. A second embodiment places the outlets beneath the top surface of the material to be treated. A method for mass transfer on a rotary hearth furnace is also disclosed.
REFERENCES:
patent: 488797 (1892-12-01), Pearce
patent: 506511 (1893-10-01), Keller
patent: 519317 (1894-05-01), Brown
patent: 534160 (1895-02-01), Keller et al.
patent: 653202 (1900-07-01), Argall
patent: 797003 (1905-08-01), Holthoff
patent: 837576 (1906-12-01), Leggo
patent: 1549379 (1925-08-01), Pike
patent: 1599467 (1926-09-01), Graves
patent: 1758805 (1930-05-01), Ridge
patent: 1810562 (1931-06-01), Hartley et al.
patent: 1825947 (1931-10-01), Fowler et al.
patent: 1825947 (1931-10-01), Fowler et al.
patent: 2232556 (1941-02-01), Nichols
patent: 2345497 (1944-03-01), Owen
patent: 2349755 (1944-05-01), Prather
patent: 2457587 (1948-12-01), McIlvaine
patent: 2483918 (1949-10-01), Martin
patent: 2505363 (1950-04-01), Nichols
patent: 2710182 (1955-06-01), Shelton
patent: 3671167 (1972-05-01), Nakano
patent: 3740184 (1973-06-01), Oleszko
patent: 3788800 (1974-01-01), Middleton et al.
patent: 3905757 (1975-09-01), von Dreusche, Jr.
patent: 3962128 (1976-06-01), Nelson et al.
patent: 4227873 (1980-10-01), Manshausen et al.
patent: 4347156 (1982-08-01), Lombana et al.
patent: 4391208 (1983-07-01), Lewis
patent: 4906183 (1990-03-01), Kyffin et al.
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