OLEFIN PREPARATION METHOD USING CIRCULATING FLUIDIZED BED PROCESS

The present invention relates to a circulating fluidized bed process for preparing olefin from a hydrocarbon material by means of a high-speed fluidized bed. Disclosed is a preferable process type formore efficiently increasing an olefin yield. According to the present invention, by means of using a catalyst, which enables a dehydrogenation reaction, and a high-speed fluidization regime in a circulating fluidized bed process, more sufficient volumetric ratio and distribution of the catalyst enabling a dehydrogenation reaction are provided, the yield of the olefin is efficiently increased and,particularly, excellent selectivity with respect to propylene can be maintained. 本发明涉及一种利用高速流化床而从烃原料制备烯烃的循环流化床工序，提出一种用于更高效地增大烯烃生产所需的优选工序形态。根据本发明，利用能够在循环流化床工序中实现脱氢反应的催化剂和高速流化区域，从而提供能够发生脱氢反应的更充分的催化剂的体积比及分布，可以有效增进烯烃的生产量，特别是可以保持对丙烯的优秀的选择性。