Method for gas-phase catalytic oxidation using a f

专利名称：Method for gas-phase catalytic oxidation

using a fixed bed reactor

发明人：Michio Tanimoto,Shin-yuki Masaki申请号：US11826629申请日：20070717

公开号：US20080021240A1公开日：20080124

摘要：The invention provides a method of gas-phase catalytic oxidation, in particular, aproduction method of (meth)acrylic acid, which enables stable continuous operation ofgas-phase catalytic oxidation over a long term, maintaining high yield and suppressingincrease in pressure loss. In the method a fixed bed reactor is used, in which a treatingagent for removing organic substance and/or carbides, preferably a treating agent havingan adsorption capacity of at least 0.05% by mass, as measured by crotonaldehyde as anindicator of organic substance, is disposed on the upstream side of the gas-phaseoxidation catalyst layer in respect of the direction of the gas flow. It is desirable that atleast a part of the treating agent is exchanged at a frequency of at least once a year.

申请人：Michio Tanimoto,Shin-yuki Masaki

地址：Himeji-shi JP,Himeji-shi JP

国籍：JP,JP

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