| 摘要 |
PROBLEM TO BE SOLVED: To suppress powdering or rupture of a solid catalyst to the min. when a solid catalyst is dropped from an upper part of a reaction tube to pack the reaction tube in a fixed bed reactor, by first supplying a liquid material to the reaction tube, packing the tube with the solid catalyst and then removing the liquid material. SOLUTION: In this multitube fixed bed reactor, lots of reaction tubes are arranged parallel to one another and are packed with a solid catalyst, and the source material for the reaction is passed through the tubes for the reaction. When the solid catalyst is dropped form the upper part of reaction tubes to pack the reactor tubes, first, a liquid material is supplied to fill the reaction tubes, then the solid catalyst is supplied and the liquid material is removed. Thereby, physical impact on the catalyst can be decreased and powdering and rupture of the catalyst can be largely suppressed. The liquid material is, preferably, alcohol and water. The amt. of the liquid to be supplied is about >=10vol% of the part of the reaction tube which is substantially to be packed with the catalyst. |
