CATALYTIC GAS-PHASE OXIDATION OF PROPENE TO ACROLEIN

摘要

1. A process for the catalytic gas-phase oxidation of propene to acrolein in a multiple contact tube fixed-bed reactor through whose space surrounding the contact tubes only one heatexchange medium circuit is passed, at elevated temperature on catalytically active multimetal oxides with a propene conversion for a single pass of selectivity of heat-exchange medium through the multiple contact tube fixedbed reactor longitudinally, considered over the reaction container as a whole, to the contact tubes in cocurrent to the reaction-gas mixture and secondly superposing a transverse flow within the reaction container by means of an arrangement of successive baffles along the contact tubes which leaves passage cross sections free, so as to give a meandrous flow of the heat-exchange medium, seen in longitudinal section through the contact tube bundle, and setting the flow rate of the circulated heat-exchange medium so that its temperature rises by from 2 to 10.degree.C between the point of entry into the reactor and the point of exit out of the reactor.