Method for the production of coke
AssigneeDidier Engineering GmbH
InventorsHartmut Bauer, Dietrich Wagener, Egmar Wunderlich
Life of this patent
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Abstract
Coke is produced from coal by coking the coal, and optionally by drying and/or preheating the coal prior to coking, and further optionally by dry cooling the coke subsequent to coking. At least the coking step is achieved in a pressure tight container which may be a transportable or tippable container. The coking step is performed in the container by conducting a gas through the container in direct or indirect heat exchange relationship with the coal and forming coke. The coking step includes a phase of lump coke formation achieved by heating the coal in a temperature range of between approximately 250.degree. and 600.degree. C. by indirect heat exchange only.
Claims15
A method of producing coke from coal, said method comprising:
- introducing coal to be coked into a pressure sealed container;
- conducting a gas through said container in direct and/or indirect heat exchange with said coal and thereby heating said coal to a temperature of approximately 250.degree. C.;
- thereafter conducting a gas through said container in indirect heat exchange only with said coal and thereby heating said coal from a temperature of approximately 250.degree. C. to a temperature of approximately 600.degree. C. at which lump coke is formed;
- and
- thereafter conducting a gas through said container in direct and/or indirect heat exchange with said lump coke and thereby heating said lump coke from a temperature of approximately 600.degree. C. to a temperature between approximately 1100.degree. and 133.degree. C., thereby forming refined coke.
Dependencies are inferred from the claim text.