Method for dewatering water-containing coal

Details Method for dewatering water-containing coal Method for dewatering water-containing coal

C - Chemistry, Metallurgy

10

L

C10L 5/00 (2006.01) C10L 5/04 (2006.01) C10L 5/16 (2006.01)

Patent

CA 2533111

A method for dewatering water-containing coal which includes heating the water-containing coal at a temperature of 100 to 350°C under a pressure not less than a saturated steam pressure at the temperature for the heating, while applying a shearing force of 0.01 to 20 Mpa to the coal, in a sealed vessel. The method is novel and allows the production of dewatered coal which is inhibited from reabsorbing water after dewatering and is also inhibited from absorbing oxygen after dewatering.

L'invention concerne un procédé permettant de déshydrater de la houille contenant de l'eau. Ce procédé consiste à chauffer la houille contenant de l'eau à une température de 100 à 350 ·C à une pression qui n'est pas inférieure à une pression de souche saturée à la température de chauffage et à appliquer sur la houille une force de cisaillement de 0,01 à 20 Mpa dans une chambre hermétique. Ce procédé permet de produire une houille déshydratée qui ne réabsorbe pas l'eau après avoir été déshydratée et qui n'absorbe pas d'oxygène après avoir été déshydratée.

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