Ahchieva, DesislavaDesislavaAhchievaBrzić, DanicaDanicaBrzićPeglow, NatalieNataliePeglowHeinrich, StefanStefanHeinrichMörl, LotharLotharMörl2022-11-292022-11-292004-09Chemie-Ingenieur-Technik 76 (9): 1295-1296 (2004-09)http://hdl.handle.net/11420/14194The product yield in heterogeneously catalyzed partial oxidation is limited thermodynamically but can be improved with new reactor configurations. A new reactor principle was studied experimentally and theoretically in which the individually controlled feeds were metered across a membrane or membranes. The studies were in a fluidized bed membrane reactor using as example the oxidative dehydrogenation of ethane to ethylene. The feeds (oxygen and ethane) were metered individually. The oxygen passed across a porous membrane into the inert gas flow loaded with hydrocarbon. The fluidized bed provided high intensity of mass, heat, and impulse transport processes and good mixing. Ethane was oxidized in a 100 by 100 mm reactor made of SICROMAL10) at 1 atm. The VOx/γ-Al2O3 catalyst (d32 = 1.8 mm) had a 1.49 vol % metal content and a specific surface area of 181 sq m/g. To determine the influence of the reaction conditions on the ethane conversion and ethylene selectivity, the temperature (450°-590°C) and the modified contact time (100-260 kg-sec/cu m) were varied in the conventional fluidized bed reactor and fluidized bed membrane reactor. The dependence of ethylene yield on ethane/oxygen ratio in different reactor configurations was illustrated. At smaller ethane/oxygen ratios higher ethylene yields were achieved in the fluidized bed membrane reactor. A model was developed to describe the partial oxidation in a bubble forming fluidized bed. The heterogeneous two phase theory was used. The simulations obtained with the model were compared with experiment.de0009-286X2004912951296Conference Paper10.1002/cite.200490143Other