Method and apparatus for partial combustion of coal

Details Method and apparatus for partial combustion of coal Method and apparatus for partial combustion of coal

1990-01-24

1991-08-27

Yuen, Henry C.

Furnaces

Refuse incinerator

Refuse suspended in or supported by a fluid medium

110264, 110347, 110214, F23D 100

Patent

active

050424009

ABSTRACT:
A first-stage furnace for partial combustion of solid fuel and oxidizer gas to generate inflammable exhaust gases which are passed to a secondary-stage furnace is shown. The first-stage furnace comprises a vertical pre-combustion chamber and a likewise cylindrical main combustion chamber mounted in horizontal position, connected downstream of the pre-combustion chamber through a tangential connecting passage. The air-fuel mixture introduced into the pre-combustion chamber is given swirling motion and burned at a temperature that converts the mixture to a mix of incompletely burned fuel particles, exhaust gases and non-combustible products in molten state. The mix stream into the tangential passage into the main combustion chamber develops into a high-velocity vortex, with the molten slag being centrifuged onto the inner wall of the main combustion chamber to form a film which is extracted out through a tapping port. Thus, the inflammable gases generated are free from non-combustible products such as ash, and conveyed to the secondary-stage furnace, through the gas transport duct.

REFERENCES:
patent: 3124086 (1964-03-01), Sage et al.
patent: 4800825 (1989-01-01), Kuenzly
patent: 4850288 (1989-07-01), Hoffert et al.
patent: 4873930 (1989-10-01), Egense et al.

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