Method for processing pulverized solid fuel

Details Method for processing pulverized solid fuel Method for processing pulverized solid fuel

1979-09-13

1982-01-05

Kratz, Peter F.

Gas: heating and illuminating

Processes

Fuel mixtures

48202, 48210, 201 4, 201 12, 201 16, C10J 346

Patent

active

043091970

ABSTRACT:
There is provided a method for processing a pulverized solid fuel by heat, which comprises the steps of drying said fuel and subjecting the latter to two-stage pyrolysis with the resulting formation of vapor, gaseous products and small coke. According to the invention, at least a part of the small coke is additionally heated to a temperature of 800.degree. to 1500.degree. C. by combustion gas and/or by partial burning of the small coke, whereafter the heated small coke is separated from the combustion gas, fed to the first stage of pyrolysis and for drying the fuel. The heated small coke is gasified by steam. The resultant gasification products are separated from the small coke which is then fed as the heat carrier to the first stage of pyrolysis.

REFERENCES:
patent: 2924556 (1960-02-01), Jaeppelt et al.
patent: 3698882 (1972-10-01), Garrett et al.
patent: 4229185 (1980-10-01), Sass

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