Maleic anhydride process

Details Maleic anhydride process Maleic anhydride process

C - Chemistry, Metallurgy

07

D

260/365.7

C07D 307/60 (2006.01) B01J 8/06 (2006.01) C07C 51/215 (2006.01)

Patent

CA 1093089

ABSTRACT OF THE DISCLOSURE MALEIC ANHYDRIDE PROCESS In a process for the conversion of normal butane to maleic anhydride at a pressure between about 15 and 100 psig and a temperature above 675°F, by contacting the normal butane with an oxygen containing gas and an oxidation catalyst disposed in a fixed catalyst bed or set of tubes in a reactor vessel, and withdrawing an effluent comprising unreacted normal butane, oxygen, CO, CO2, N2 and maleic anhydride from the catalyst bed or tubes, improvements in yield, product quality and plant operability are obtained by rapidly cooling the effluent gas to a temperature below 675°F. One method of accomplishing this is by contacting the effluent gas with cooling coils contained within the reactor but below the catalyst bed.

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