Immersion fixed bed reactor intensified by liquid flow

An immersion fixed bed reactor intensified by liquid flow, comprising:

• a cylindrical tank internally installed with an annular cylindrical catalyst bed (ACCB) packed with solid catalysts, the ACCB including an inner wall and an outer wall that are composed of two layers of stainless steel sheets with a plurality of holes, the outer layer of stainless steel is 3-20 mm thick and is perforated with diameter of 3-10 mm holes, the inner layer of catalyst contacting stainless steel is 0.1-3 mm thick and is covered with a stainless steel waved mesh in a circumferential direction and a distance between peak and valley is 3-20 mm, a top and a bottom of the ACCB being sealed with circular blind plates, and the solid catalysts are packed in a space between the inner wall and outer wall of the ACCB
• wherein the cylindrical tank is equipped with a reaction mass inlet duct at a top and a mass outlet duct at a bottom and the mass outlet duct is connected with a liquid circulating pump, a liquid outlet duct valve, a flow meter, a heat exchanger and a normal tube inlet inserting into a central column space of the ACCB at an axial position through the top of the ACCB, and enables the liquid pumped by the liquid circulating pump into the central column space of the ACCB and radically pass through the catalyst bed of the ACCB into a space between the cylindrical tank and the ACCB, thus accomplishing one cycle of reaction operation:
• wherein, with continuous work of the liquid circulating pump, the liquid in the cylindrical tank is repeatedly circulated and the reaction is simultaneously carried out again and again.