TECHNIQUE OF ALKANG CATALYZEO DEHYDROGENATION FOR PRODUCING C3～C4 OLEFIN

 The process, dehydrogenation catalyst and industrial using situation of star dehydrogenation technique developed by Phillips Petroleum CO. and the FBD-4 dehydrogenation technique developed by SnamprogettYarsintez Cooperation are summarized. The Star technique adopts the reactor wity tube cycling operation stable bed.the reaction under the isothermal condition.and the heat source is supplied by fluegas from reheating furnace of the type of tipburn reborner. The material diluted with steam,the noble metal pt on globular aluminic acid zinc spinel carrier is used as a catalyst. The single progress convert ratio of material is 50%～55%(mol). The selectivity of products is 94. 5%～98%(mol),a suite of installation ran in Oct. 1992,two suite of installation. are designing and construction and the contract of three suite of installations were signed. The FBD-4 technique adopts the cbullience fluidized bed reactor-regene-rator system. Reacting and regenerating process ran in two independent vessels,the fuel supplement is supplied by regenerating vessel,and the reaction needed of heat which is supplied by sensible heat burning deposit carbon overlay the catalyst to heat cycling particle of catalyst,the oxide chromium and auxiliary agent on globular Al2O3 carrier is used as a catalyst. The single progress convert ratio of isobutane is 50%(mol),the selectivity of isobutane is 91%(mol),and the old technique of thirty-seven suite of installations ran in 60’s. The improved new technique of the first suite of installation has industrialized. In adition,six suite of installations are designing and constraction