Gasification of coal

C - Chemistry – Metallurgy – 10 – J

Patent

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Details

C10J 3/66 (2006.01) C10J 3/54 (2006.01) C10L 5/00 (2006.01) C10L 9/08 (2006.01)

Patent

CA 2731942

A coal processing operation (10) includes in a dense media separation stage (12), subjecting a coal feedstock (18) which includes minerals to dense media separation producing a first coal stream (20) and a second coal stream (22). Coal in the first coal stream (20) is lower in ash and has a lower ash fusion temperature than coal in the second coal stream (22). Coal from the first coal stream (20) is processed in a high temperature coal processing operation (44), and coal from the second coal stream (22) is processed in a medium temperature coal processing operation (16).

L'invention concerne une opération (10) de traitement de charbon comportant létape consistant, dans un étage (12) de séparation des milieux denses, à soumettre une charge (18) de charbon comprenant des minéraux à une séparation des milieux denses produisant un premier flux (20) de charbon et un deuxième flux (22) de charbon. Le charbon du premier flux (20) de charbon produit moins de cendres et présente une température de fusion des cendres plus basse que le charbon du deuxième flux (22) de charbon. Le charbon du premier flux (20) de charbon est traité dans une opération (44) de traitement de charbon à haute température et le charbon du deuxième flux (22) de charbon est traité dans une opération (16) de traitement de charbon à température moyenne.

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