PURPOSE: To obtain the title reactor, the temp. of which can be easily controlled, by providing a metallic ball-packed bed on the upstream side of a catalyst bed, and furnishing nozzles for charging a fluid not contributing to the reaction in the spaces between the respective catalyst beds and the succeeding metallic ball-packed bed.
CONSTITUTION: The multistage fixed bed catalytic reactor main body 1 is firstly heated by a heater 8 approximately to the operation temp. when a process fluid is charged. A liq. and a gas each preheated to the operation temp. are then fed from a feed port 9. Consequently, the liq. travels along the surface of the metallic ball in the metallic ball-packed bed 4, disperses in the radial direction, and descends. The gas passes through the gap between the metallic balls, and both components flow respectively into the catalyst-packed bed 3. An exothermic reaction occurs among the three gaseous, liq., and solid phases in the catalyst-packed bed 3, and the temp. is increased. The temp. is measured by a thermocouple 7 inserted into the catalyst-packed bed 3. When the measured temp. increases rapidly, the fluid not contributing to the reaction is fed from the nozzle 6 inserted in the space 5 to absorb the heat of reaction.
SAIDA KEIICHI
FUNABASHI EIJI
MIYATA TETSUAKI
WAKAMURA OSAMU
NITTETSU PLANT DESIGNING CORP