Two-step process for conditioning sized coal and resulting produ

Details Two-step process for conditioning sized coal and resulting produ Two-step process for conditioning sized coal and resulting produ

1974-05-09

1977-01-11

Bernstein, Hiram H.

Distillation: processes, thermolytic

With measuring, testing or inspecting

201 8, 201 9, 201 31, 201 36, 201 42, 201 44, 252445, C10L 906

Patent

active

040025330

ABSTRACT:
An improved two-step fluid bed process for conditioning sized, agglomerative, high volatile bituminous coal is disclosed. The agglomerative bituminous coal is first crushed and sized for fluidization. A first treatment is conducted under oxidizing conditions at below the fusion temperature of the coal, preferably at about 600.degree. F., followed immediately by a second treatment under a non-oxidizing or inert atmosphere at preferably 800.degree. F. .+-.50.degree. F. The resulting oxidized and heat treated coal particles have a volatile content of at least 15% and are thereby rendered non-agglomerative when thereafter subjected to even higher temperatures, e.g., when making activated carbon and/or synthesis gas.

REFERENCES:
patent: 2805189 (1957-09-01), Williams
patent: 3047472 (1962-07-01), Gorin
patent: 3070515 (1962-12-01), Sylvander
patent: 3444046 (1969-05-01), Harlow
patent: 3574065 (1971-04-01), Eddinger
patent: 3712855 (1973-01-01), Allred
patent: 3843559 (1974-10-01), Repik

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