Catalytic dehydrogenation process flow

UOP s catalytic dehydrogenation processes typically make use of radial-flow adiabatic fixed-bed (or slowly moving bed) reactors with modified Pt-alumina catalysts. 

The process shown in Fig. P2.71 is the catalytic dehydrogenation of propane to propylene. The composition and flow rate of the recycle stream are unknown. Certain data are known for the reactor, absorber, and distillation colunrn as follows ... 

The Snamprogetti fluidized-bed process uses a chromium catalyst in equipment that is similar to a refinery catalytic cracker (1960s cat cracker technology). The dehydrogenation reaction takes place in one vessel with active catalyst deactivated catalyst flows to a second vessel, which is used for regeneration. This process has been commercialized in Russia for over 25 years in the production of butenes, isobutylene, and isopentenes. 

Caija, G., Nakamura, R.. Aida. T. and Niiyama, H. (2003). Mg-V-AI mixed oxides with mesoporous properties using layered double hydroxides as precursors catalytic behavior for the process of ethylbenzene dehydrogenation to styrene under a carbon dioxide flow. 7. Coto/., 218, 104-110. 

---