REACTOR

摘要

PURPOSE:To facilitate charge and discharge of catalyst by locating a porous central pipe at the center of a reactor and locating simultaneously a porous cylinder which is concentric with the central pipe and having a gas passage constituted between an external shell of the reactor. CONSTITUTION:Water contg. substantially no steam bubbles is introduced from a nozzle 13 and flows from below toward above through an annular space formed by the inside dia. of a cooling pipe 15 and an outside dia. of a central pipe 17. Steam is generated and moved upward from an inside surface of the pipe 15 serving as a heat transmitting surface. A fluid mixture consisting of water having risen to the top of the cooling pipe 15 and the steam is inversed its flow direction and flows downward through the central pipe 17 and discharged from a nozzle 14. Since in this reactor, a lower tube plate 7 is contained but no upper tube plate is contained, packing work of the catalyst is facilitated remarkably.