| 摘要 |
Apparatus for performing physical and/or chemical processes involving at least one liquid, e.g. a heat exchanger, has a plurality of vertical tubes opening at their top and bottom ends into top and bottom chambers respectively. Particulate material in the tubes and the chambers is fluidized by the upward flow of liquid in the tubes. To prevent inefficient circulatory flow of the particles caused by downward movement of the particles in one or more of the tubes, there is provided, in at least one of the top and bottom chambers, means for hindering the transverse movement of the particles in the chamber. Such means may be loose balls made of wire mesh of a size large enough to allow passage of particles through the ball under normal conditions. |
