Method for enhancing the desulfurization of hot coal gas in a fl

Details Method for enhancing the desulfurization of hot coal gas in a fl Method for enhancing the desulfurization of hot coal gas in a fl

1988-04-05

1989-05-23

Kratz, Peter

Gas: heating and illuminating

Processes

Fuel mixtures

48203, 48206, 48210, C10J 354

Patent

active

048327042

ABSTRACT:
A process and apparatus for providing additional desulfurization of the hot gas produced in a fluid-bed coal gasifier, within the gasifier. A fluid-bed of iron oxide is located inside the gasifier above the gasification bed in a fluid-bed coal gasifier in which in-bed desulfurization by lime/limestone takes place. The product gases leave the gasification bed typically at 1600.degree. to 1800.degree. F. and are partially quenched with water to 1000.degree. to 1200.degree. F. before entering the iron oxide bed. The iron oxide bed provides additional desulfurization beyond that provided by the lime/limestone.

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