Process for making formed coke from high sulfur coal

Details Process for making formed coke from high sulfur coal Process for making formed coke from high sulfur coal

C - Chemistry, Metallurgy

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B

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C10B 39/02 (2006.01) C10B 39/00 (2006.01) C10L 5/04 (2006.01) C10L 9/04 (2006.01)

Patent

CA 1173776

Abstract Of The Disclosure In a formed coke process of the type in which carboni- zation and calcination of coal is carried out prior to briquet- ting, the hot calcined char is cooled by means of a hydrogen- rich gas at superatmospheric pressure so as to effect concurrent cooling and desulfurization of the char. High sulfur coal containing 1.5 to 4 wt.% sulfur can be used while obtaining a char and a formed coke product with a sulfur content of 0.8 wt.% or less. The cooling can be done in two stages: (1) a first stage in which sulfur removal and cooling to a temper- ature not lower than about 800°F are accomplished with a hydrogen- rich gas, and (2) a second stage in which further cooling to about 200°F or less is accomplished with an inert gas.

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