Process for coal - heavy oil upgrading

Details Process for coal - heavy oil upgrading Process for coal - heavy oil upgrading

C - Chemistry, Metallurgy

10

L

C10L 9/00 (2006.01) C10G 1/00 (2006.01) C10G 1/02 (2006.01) C10G 1/04 (2006.01)

Patent

CA 2151792

A process for upgrading a low rank coal and a heavy oil to produce an improved coal product and an improved oil product. First, the low rank coal is dewatered to reduce its moisture content to less than about 4 percent in order to render the low rank coal more oleophilic. Next, the dewatered low rank coal is mixed with a quantity of the heavy oil of between about 15 and 40 percent of the dry weight of the low rank coal so that the heavy oil substantially contacts the low rank coal in order to produce a mixture. The mixture is then heated to a temperature less than the mild thermal cracking limit of the mixture in order to separate hydrocarbons from the mixture and to produce the improved coal product. The hydrocarbons separated from the mixture during the heating step are then collected in order to produce the improved oil product.

Procédé de valorisation de charbon de faible rang et de pétrole lourd afin d'obtenir un produit de charbon et un produit pétrolier améliorés. Premièrement, le charbon de faible rang est déshydraté pour réduire sa teneur en eau à moins de 4 pour cent afin de le rendre plus oléophilique. Ensuite, le charbon déshydraté est mélangé avec un volume de pétrole lourd représentant entre environ 15 et 40 pour cent du poids sec du charbon de faible rang de sorte que le pétrole lourd entre essentiellement en contact avec le charbon pour produire un mélange. Ce dernier est chauffé à une température inférieure à sa limite de craquage thermique dans des conditions modérées afin de séparer les hydrocarbures du mélange et de produire un produit du charbon amélioré. Les hydrocarbures séparés du mélange au cours de l'étape de chauffe sont ensuite recueillis afin de produire un produit pétrolier amélioré.

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