公开(公告)号：US3811823A

公开(公告)日：1974-05-21

申请号：US35054473

申请日：1973-04-12

申请人： FULLER CO

发明人： WARSHAWSKY J

IPC分类号： F27B7/38 ,  F27D15/02 ,  F28C3/16

CPC分类号： F27D15/0286 ,  F27B7/38 ,  F28C3/16

摘要： Apparatus for cooling heated pulverulent material which has been discharged from a rotary kiln, furnace, or reactor and also for recovering the product heat for use as a preheated source of air for combustion in the kiln or for drying in another process. The apparatus comprises several levels of fluidized beds which are arranged one above another and spaced from the walls of the outer casing, so that pulverulent material flows by means of displacement overflow from the upper to the lower bed while cooling air passes upward, through, and around the fluidized bed of material. The cooling air is then removed from the casing and discharged directly as preheated air into a rotary kiln, furnace, or reactor.