Dry distillation gasification combustion equipment, dry distilla

Details Dry distillation gasification combustion equipment, dry distilla Dry distillation gasification combustion equipment, dry distilla

1992-08-17

1994-03-22

Favors, Edward G.

Furnaces

With fuel treatment means

Means for liberating gas from solid fuel

48 69, 48111, 110242, 110248, 431352, F23G 512

Patent

active

052954498

ABSTRACT:
A dry distillation gas generator generates a dry distillation gas for burning in a separate combustion gas burner unit. Air is supplied in a gentle decelerated flow to the bottom of the dry distillation generator in a quantity sufficient to support combustion of a solid fuel in the vicinity of the air supply, but at a low enough volume to prevent the combustion proceeding to other parts of the generator, thus thermally decomposing the remainder of the solid fuel to generate the dry distillate gas. An air chamber surrounds the generator to reduce the temperature to which the solid fuel is exposed. Similarly, an air chamber is disposed below the bottom of the generator to supply air to the generator, and to moderate the temperature therein. An impurity separation tank in a conduit between the generator and the gas burner unit helps prevent particulates from entering the generator. A preheat burner in the combustion gas burner unit includes a pilot to ignite and preheat the gas. A first air injection device injects air from outside the gas burner in a spiral flow to agitate and mix the gas with air. A second air injection device injects air preheated in an air storage layer surrounding the gas burner unit into the gas burner in a spiral flow to further agitate and mix the gas with air. The injection point of the second air injection device is downstream of the injection point of the first air injection device.

REFERENCES:
patent: 4687436 (1987-08-01), Shigeta
patent: 4841884 (1989-06-01), Engstrom et al.
patent: 5101739 (1992-04-01), Nance et al.

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