Gas: heating and illuminating – Generators – Cupola
Patent
1975-07-08
1976-03-23
Bashore, S. Leon
Gas: heating and illuminating
Generators
Cupola
48 87, 48202, 201 38, 201 42, 209 11, 209138, 252373, C10K 306
Patent
active
039458091
ABSTRACT:
A method and apparatus for removing oversized, unentrained char particles from a two-stage coal gasification process so as to prevent clogging or plugging of the communicating passage between the two gasification stages. In the first stage of the process, recycled process char passes upwardly while reacting with steam and oxygen to yield a first stage synthesis gas containing hydrogen and oxides of carbon. In the second stage, the synthesis gas passes upwardly with coal and steam which react to yield partially gasified char entrained in a second stage product gas containing methane, hydrogen, and oxides of carbon. Agglomerated char particles, which result from caking coal particles in the second stage and are too heavy to be entrained in the second stage product gas, are removed through an outlet in the bottom of the second stage, the particles being separated from smaller char particles by a counter-current of steam injected into the outlet.
REFERENCES:
patent: 2741549 (1956-04-01), Russell
patent: 2796391 (1957-06-01), Brown
patent: 3782913 (1974-01-01), Donath
Bashore S. Leon
Carlson Dean E.
The United states of America as represented by the United States
Yeung George C.
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