Slag discharge device of a coal gasification reactor

C - Chemistry – Metallurgy – 10 – J

Patent

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Details

C10J 3/52 (2006.01) C10J 3/84 (2006.01)

Patent

CA 2730366

The invention relates to a device for removing slag from a coal gasification reactor and to a slag water bath enclosed by the reaction vessel, the slag being discharged by means of a lock-type transfer vessel arranged downstream of the slag bath. The said lock-type transfer vessel consists of one upper and one lower cylindrical section, the upper cylindrical section having a diameter larger than that of the lower cylindrical section and both sections being connected with each other via a tapered section which preferably is conical and the angle of the cone being similar to that of the angle of repose of the slag. The invention also relates a process for removing slag from a coal gasification reactor and a slag water bath housed by the reaction vessel, the said device permitting a discharge of slag in a lock-type transfer vessel and precluding any formation slag incrustations in the lock-type transfer vessel.

L'invention concerne un dispositif d'extraction de laitier contenu dans un réacteur de gazéification de charbon et dans un bain de laitier situé dans la cuve de réaction. Le laitier est évacué vers un contenant d'évacuation situé en aval du bain de laitier, et le contenant d'évacuation est composé d'une partie cylindrique supérieure et d'une partie cylindrique inférieure, la partie cylindrique supérieure présentant un diamètre inférieur à celui de la partie cylindrique inférieure. Les deux parties cylindriques sont reliées par une zone amincie présentant un angle identique à l'angle de déversement du laitier. L'invention concerne également un procédé d'extraction de laitier contenu dans un réacteur de gazéification de charbon et dans un bain de laitier situé dans la cuve de réaction, le dispositif permettant une évacuation de laitier vers un contenant d'évacuation et empêchant le dépôt de laitier dans le contenant d'évacuation.

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