APPARATUS AND PROCESS FOR MIXING IN FLUIDIZED BEDS

摘要

Apparatus and process for increasing mixing in a fluidized bed (56). A slide (70), which may be in the form of a tube or trough, transports particles from an upper zone (60) downward to a lower zone (62) at a different horizontal position, thereby changing the horizontal position of the particle and creating lateral mixing in the fluidized bed (56). Increased mixing may improve efficiency for an apparatus using a fluidized bed (56). For example, increased lateral mixing in a regenerator (50) may increase temperature and oxygen mixing and reduce stagnation to improve efficiency. A slide (70) may be relatively unobtrusive, inexpensive, and simple for a retrofit or design modification and may improve combustion efficiency at high rates by enhancing the lateral blending of spent and regenerated catalyst.