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

1981-02-23

1982-08-03

Garris, Bradley

Distillation: processes, thermolytic

And shaping to desired form or configuration

Prior to charging to carbonizing zone

201 17, 201 39, 202228, C10B 3902, C10B 5700

Patent

active

043426220

ABSTRACT:
In a formed coke process of the type in which carbonization and calcination of coal is carried out prior to briquetting, 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 temperature not lower than about 800.degree. F. are accomplished with a hydrogen-rich gas, and (2) a second stage in which further cooling to about 200.degree. F. or less is accomplished with an inert gas.

REFERENCES:
patent: 2717868 (1955-09-01), Gorin et al.
patent: 3073751 (1963-01-01), Gorin et al.
patent: 3117918 (1964-01-01), Batchelor et al.
patent: 3671401 (1972-06-01), Gorin
patent: 4097245 (1978-06-01), Holowaty
patent: 4104129 (1978-08-01), Fields et al.
patent: 4203960 (1980-05-01), Bauer et al.
"Thermal Processing is Developed for Petroleum Coke Desulfurization"; Sze et al.; Oil & Gas Journal; pp. 64-68; 1-22-79.

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