An improved process for the production of styrene through dehydrogenation of ethylbenzene in the presence of steam at elevated temperatures, comprising (1) recovering heat of condensation normally lost during separation of the various components of the dehydrogenation reaction effluent, especially of ethylbenzene from styrene, without need or use of a compressor and (2) using such heat to vaporize an aqueous feed mixture of ethylbenzene and dilution water that is introduced into the dehydrogenation reactor, preferably at about atmospheric pressure, thereby obviating the need to use steam to vaporize the liquid ethylbenzene feed and also enabling much of the diluent steam needed as sensible heat for the dehydrogenation reaction to be generated from water.
一种在高温蒸汽存在下通过乙苯脱氢生产
苯乙烯的改进工艺,包括:(1)回收通常在分离脱氢反应流出物(特别是
苯乙烯中的乙苯)的各种成分过程中损失的冷凝热,而不需要或不使用压缩机;(2)利用这种热量使乙苯和稀释
水的
水性进料混合物气化,这种混合物最好在大约大气压力下被引入脱氢反应器,从而避免了使用蒸汽使液态乙苯进料气化的需要,也使脱氢反应所需的大部分稀释蒸汽显热由
水生成。