Patent Number: 6,310,219

Title: Process for the production of maleic anhydride

Abstract: Disclosed is a process for the production of maleic anhydride, which comprises: reacting a hydrocarbon with an oxygen-containing gas in the presence of a catalyst; recovering maleic anhydride from the reaction gas; recovering unreacted hydrocarbon from the remaining gas; and returning the hydrocarbon thus recovered to the reactor for re-use, wherein said reaction is effected under the conditions such that the hydrocarbon concentration X (vol %) and oxygen concentration Y (vol %) in all the gases to be fed into the reactor, the hydrocarbon conversion Z (%) in the reactor and the oxygen concentration W (vol %) in all the effluent gases from the reactor satisfy the following relationships:

Inventors: Sawaki; Itaru (Okayama, JP), Suwa; Hideo (Okayama, JP), Ishimura; Yasunori (Okayama, JP), Iizuka; Yoshiaki (Kanagawa, JP), Izumi; Mineo (Kanagawa, JP)

Assignee: Mitsubishi Chemical Corporation

International Classification: C07C 51/16 (20060101); C07C 51/215 (20060101); C07D 307/60 ()

Expiration Date: 10/30/2018