Method for catalytic gas phase oxidation

专利名称：Method for catalytic gas phase oxidation发明人：Takeshi Nishimura,Masakatsu

Mori,Masatsugu Kitaura,OsamuDodo,Daisuke Nakamura

申请号：US0950申请日：20000825公开号：US06613940B1公开日：20030902

专利附图：

摘要：In the reaction of catalytic gas phase oxidation by means of a shell-and-tubetype reactor adapted to circulate a heating medium to the shell of the reactor through

the medium of a circulation device connecting an annular conduit connected thereto, amethod for the catalytic gas phase oxidation characterized by subjecting a part of theheating medium extracted from the shell of the reactor to heat exchange, introducingthe heating medium resulting from the heat exchange into the proximity of a heatingmedium circulation inlet on the inlet side of the circulation device or the annular conduiton the outlet side of the reactor. The flow rate of the heating medium after the heatexchange is preferred to be in the range of 2-40 vol. % based on the flow rate of theheating medium within the shell of the reactor and the temperature difference of theheating medium at the inlet and the outlet to be in the range of 15-150° C. According tothis invention, it is made possible to reduce evenly the hot spots in the reaction tubes,improve the yield of the product aimed at, and implement a reaction of catalytic gasphase oxidation of propylene or isobutylene.

申请人：NIPPON SHOKUBAI CO., LTD.

代理机构：Mathews, Collins, Shepherd & McKay, P.A.

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