An endothermic gas phase catalytic dehydrogenation process

摘要

The present invention relates to an endothermic catalytic dehydrogenation process conducted in gas phase in at least one reactor system comprising at least one reactor (R) with at least one catalyst bed (CB) comprising at least one inorganic catalytic material and at least one first inert material comprising the steps of feeding at least one first stream S1 comprising at least one alkane of the general formulae I C n H 2n+1 R 1 with n ‰¥3 and R 1 = H or aryl into the at least one reactor for a total alkane feeding time tS 1 , feeding at least one second stream S2 comprising at least one olefin of the general formulae II C m H 2m with m ‰¥ 2 into the at least one reactor for a total feeding time tS 2 , wherein the ratio z of total olefin feeding time tS 2 and total alkane feeding time tS 1 is between 0.001 and 0.95, preferably 0.01 and 0.5, most preferably between 0.05 and 0.1. The present invention relates further an endothermic catalytic dehydrogenation process conducted in gas phase in at least one reactor system comprising at least one reactor (R) with at least one catalyst bed (CB) wherein the first alkane stream S1 is fed to the at least one reactor (R) of the reactor system as front feed and the second olefin stream S2 is fed to the at least one reactor (R) of the reactor system at at least one location alongside of the at least one reactor (R).