Process and facility for the generation of a constant amount...

Details Process and facility for the generation of a constant amount... Process and facility for the generation of a constant amount...

B - Operations, Transporting

01

J

B01J 8/06 (2006.01) C07C 5/42 (2006.01)

Patent

CA 2754378

The invention relates to a process and a facility for an as constant as possible supply of steam flow from an alkane dehydrogenation, the process being carried out by passing a hydrocarbonaceous gas through reaction tubes loadable with a catalyst, and the reaction tubes, which are sealed towards the outside, running through a heating chamber which is heatable by means of burners, and the catalyst being regenerated for the reaction in a cyclic operating mode, in which the reaction is endothermic and the regeneration of the catalyst non- endothermic, and the capacity of the main burners is reduced during the regeneration of the catalyst, in which auxiliary burners, which serve to keep up the production of hot flue gas during the regeneration of the catalyst, are installed at the inlet of the flue gas duct to produce additional hot flue gas which is used for generating an as constant as possible amount of steam from the waste heat of the process.

L'invention concerne un procédé et un dispositif pour produire aussi uniformément que possible un courant de vapeur à partir d'une déshydrogénation d'alcanes. Selon ledit procédé, on fait passer un gaz contenant des hydrocarbures par des tubes de réaction pouvant être remplis avec un catalyseur, les tubes de réaction fermés vers l'extérieur sont guidés à travers une chambre de chauffe qui peut être chauffée par des brûleurs, et le catalyseur est cycliquement régénéré pour la réaction. La réaction est endothermique et la régénération du catalyseur n'est pas endothermique, et la puissance des brûleurs principaux est réduite pendant la régénération du catalyseur. Selon l'invention, pour continuer à produire du gaz de fumée chaud, des brûleurs auxiliaires qui, pendant la régénération du catalyseur, continuent à produire du gaz de fumée chaud utilisé pour la génération aussi uniforme que possible de vapeur à partir de la chaleur dégagée par le processus, se trouvent à l'entrée du canal de gaz de fumée.

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