APPARATUS FOR CARRYING OUT A PHYSICAL AND/OR CHEMICAL PROCESS, SUCH AS A HEAT EXCHANGER

摘要

A heat exchanger in which a medium to be treated or to be heated can be kept in a quasi−stationary, fluidized condition by means of a fluidized bed consisting of granular material (73). In the upper space of the heat exchanger a screen (15) is incorporated for blocking, while passing the medium, the access of the granular material (73) to an outlet (19). Furthermore, along the screen surface flow guide means are arranged which together form a flow channel (74) for guiding a flow of medium with granular material (73) to another outlet (21).