Method and arrangement for gasifying finely divided fluidized so

Gas: heating and illuminating – Generators – Cupola

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Details

48 87, 48197R, 48DIG4, 110101C, 110101CB, 214 182, 302 35, 431 90, C10J 350

Patent

active

040172694

ABSTRACT:
The arrangement includes a source of finely divided solid combustible material fluidized in an inert gas, and also a source of combustion-supporting gas, such as oxygen, air, or oxygen-enriched air. A gasifier is provided for gasifying finely divided solid combustible material by reacting the same with combustion-supporting gas, and the gasifier has one or more inlets. A first conduit connects the source of combustible material to an inlet of the gasifier. A second conduit connects the source of combustion-supporting gas to an inlet of the gasifier. A pressure-regulating unit is automatically operative for maintaining the pressure of fluidized combustible material entering the gasifier higher than the pressure of combustion-supporting gas entering the gasifier and higher than the pressure of gases in the gasifier, to prevent the combustion-supporting gas and also the gases in the gasifier from passing out of the gasifier into the first conduit and becoming mixed with fluidized combustible material before such combustible material can enter the gasifier.

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"The Continuous Pressure Gasification of Pulverized Coal in Suspension", Fredersdorff et al.; American Gas Association; May, 1952; pp. 1-4.
"Pressure Feeder for Powdered Coal or Other Finely Divided Solids", Barker et al.; Engineering and Process Development; 5-51.
"Pilot Plant Gasification of Pulverized Coal with Oxygen and Highly Superheated Steam", Strimbeck et al.; Bureau of Mines; 11-50.

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