Programmable logic controller for dehydrogenation process with reduced Houdry lumps

A method of performing a fixed bed dehydrogenation process for producing olefins, the method comprising:

• controlling a multiple fixed bed adiabatic dehydrogenation based olefin manufacture system that comprises at least three fixed bed dehydrogenation reactors that are configured to share a feed source and configured to dehydrogenate a hydrocarbon to produce an olefin,
• wherein each of the at least three fixed bed dehydrogenation reactors comprise a catalyst bed that does not include a heat generating inert material,
• wherein the controlling is performed such that a farthest two of the reactors, by distance, from each other are not operated simultaneously in either of dehydrogenation processing and catalyst regeneration processing, and
• wherein the size of Houdry lumps formed in the at least three fixed bed dehydrogenation reactors are reduced compared to a method of controlling that is performed such that the farthest two reactors, by distance, from each other are operated simultaneously in either of dehydrogenation processing and catalyst regeneration processing.