Method for coking coal

C - Chemistry – Metallurgy – 10 – B

Patent

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Details

C10B 47/18 (2006.01) C10B 7/00 (2006.01) C10B 29/02 (2006.01) C10B 47/32 (2006.01) C21B 5/00 (2006.01) C21B 13/00 (2006.01)

Patent

CA 2205047

This invention discloses a new method for the production of coke from coals. In the present invention, coke is continuously produced by heating a moving charge of coal inside the annular cross-section (13) defined by two concentric tubes (11, 12). The coking chamber (13), which includes a large diameter tube (11) and a concentric smaller diameter tube (12), is force fed with a coal such as metallurgical coal. The coal is bi-directionally heated along a controlled temperature gradient between the inner wall of the small diameter tube (12) and the outer wall of the large diameter tube (11). The coal is transformed to coke as it travels longitudinally along the axis of both tubes. Coke is discharged from the chamber at the end opposite to which it was charged and is cooled before being exposed to the atmosphere. Gases generated during the coking process are collected and treated. All of these operations are accomplished in a closed system to prevent pollution.

La présente invention concerne un procédé nouveau de production de coke à partir de charbons. Dans la présente invention, le coke est produit en continu par chauffage d'une charge de charbon en déplacement, à l'intérieur de la section annulaire (13) définie par deux tubes concentriques (11, 12). La chambre de cokéfaction (13), qui comprend un tube de grand diamètre (11) et un tube concentrique de plus faible diamètre (12), reçoit une alimentation forcée en charbon tel que du charbon métallurgique. Le charbon est chauffé dans deux directions suivant un gradient de température contrôlé entre la paroi intérieure du tube de petit diamètre (12) et la paroi extérieure du tube de grand diamètre (11). Le charbon est transformé en coke pendant qu'il se déplace longitudinalement, parallèlement à l'axe des deux tubes. Il est évacué de la chambre à l'extrémité opposée à celle du chargement et il est refroidi avant d'être exposé à l'atmosphère. Les gaz dégagés lors du processus de cokéfaction sont recueillis et traités. Toutes ces opérations sont exécutées à l'intérieur d'un système fermé pour éviter la pollution.

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