Chemistry of inorganic compounds – Hydrogen or compound thereof – Elemental hydrogen
Patent
1997-10-22
1999-11-09
Langel, Wayne
Chemistry of inorganic compounds
Hydrogen or compound thereof
Elemental hydrogen
48197R, 48197A, 48DIG2, 252373, 423359, 4236481, 423656, 588226, C01B 302, C01B 312, C01C 104
Patent
active
059808586
ABSTRACT:
A method and apparatus for treating wastes by two-stage gasification recovers metals or ash content in the wastes in such a state that they can be recycled, and gases containing carbon monoxide (CO) and hydrogen gas (H.sub.2) for use as synthesis gas for ammonia (NH.sub.3) or production of hydrogen gas. The wastes are gasified in a fluidized-bed reactor at a low temperature. Then, gaseous material and char produced in the fluidized-bed reactor are introduced into a high-temperature combustor, and gasified at a high temperature and ash content is converted into molten slag. After water scrubbing and a CO conversion reaction, the gas is separated into H.sub.2 and residual gas. The residual gas is then supplied to the fluidized-bed reactor as a fluidizing gas.
REFERENCES:
patent: 3304249 (1967-02-01), Katz
patent: 3823227 (1974-07-01), White
patent: 4419330 (1983-12-01), Ishihara et al.
patent: 4452155 (1984-06-01), Ishihara et al.
patent: 4583993 (1986-04-01), Chen
patent: 4778483 (1988-10-01), Martin et al.
patent: 4936872 (1990-06-01), Brandl et al.
patent: 5311830 (1994-05-01), Kiss
patent: 5347068 (1994-09-01), Rabe et al.
patent: 5425317 (1995-06-01), Schaub et al.
patent: 5550312 (1996-08-01), Schingnitz et al.
patent: 5620488 (1997-04-01), Hirayama
patent: 5656044 (1997-08-01), Bishop et al.
patent: 5725614 (1998-03-01), Hirayama
Shosaku Fujinami et al., "Fluidized-Bed Gasification of Cellulosic Wastes (1)", Ebara Engineering Review No. 153, Ebara Corporation, Japan, 1991, pp. 18-24, includes English abstract.
Shosaku Fujinami et al., "Fluidized-Bed Gasification of Cellulosic Wastes (2)", Ebara Engineering Review No. 153, Ebara Corporation, Japan, 1991, pp. 18-24, includes English abstract.
Yoshijaki Ishii et al., "Two-Bed Pyrolysis System for Municipal Refuse", Ebara Engineering Review No. 104, Ebara Corporation, Japan, 1978, pp. 3-10.
Abandoned U.S. Patent Application filed Nov. 27, 1996, entitled "Method and Apparatus for Treating Waste By Gasification", by Hiroyuki Fujimura, Serial No. 08/753,607.
Copending U.S. Patent Application filed Jun. 18, 1997, entitled "Method and Apparatus for Treating Waste By Gasification", by Hiroyuki Fujimura, Serial No. 08/877,810, located in Group Art Unit 1312.
Copending U.S. Patent Application filed Aug. 20, 1997, entitled "Method an Apparatus for Fluidized-Bed Gasification and Melt Combustion", Hirayama, Serial No. 08/915,322, located in Group Art Unit 312.
Fujimura Hiroyuki
Fujinami Shosaku
Fukuda Toshio
Hirayama Yoshio
Hirose Tetsuhisa
Ebara Corporation
Langel Wayne
Ube Industries, Lt.
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