Process for processing brown coal

Details Process for processing brown coal Process for processing brown coal

C - Chemistry, Metallurgy

10

L

C10L 5/44 (2006.01)

Patent

CA 2742713

The invention relates to a method for preparing brown coal for combustion and/or gasification of the same for the purpose of generating electricity, wherein the pit-wet brown coal is first broken and then pulverized in multiple stages. The ground coal is then fed into a fluidized bed dryer for drying. The method is characterized in that a monitoring screening is connected downstream of the grinding device, wherein the screen width is selected so that the screen passage rate of the brown coal is as close to 100% as possible.

L'invention concerne un procédé de préparation de lignite à des fins de combustion et/ou de gazéification pour générer de l'électricité. Selon l'invention, le lignite ayant subi l'humidité de la mine est d'abord préconcassé puis broyé au cours de plusieurs étapes. Le charbon pulvérisé est ensuite soumis à un processus de séchage dans un séchoir en lit fluidisé. Le procédé selon l'invention est caractérisé en ce qu'un tamisage de contrôle est effectué en aval du dispositif de pulvérisation, le numéro de tamis étant sélectionné de manière que le passant de lignite corresponde de préférence à 100 %.

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