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Exergy analysis of ethylbenzene dehydrogenation to styrene monomer

机译：乙苯脱氢制苯乙烯单体的火用分析

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In this paper, exergetic analysis for dehydrogenation of ethylbenzene over a potassium-promoted iron oxide catalyst for styrene monomer production is investigated. The purpose of the study is to decrease the work loss in the process. Due to the high energy consumption of the unit, exergy analysis was used to optimize the energy consumption of styrene production unit and associated fractionation unit. Preheater, second reactor, and benzene-toluene tower were studied to optimize energy consumption. It is observed that coupling of an Liquified Natural Gas (LNG) type of heat exchanger with preheater improves the exergetic efficiency of the preheater. Also, decreasing the pressure of benzene-toluene column from 220 kPa to 60 kPa increases the exergetic efficiency from 77.45 to 90.86, while by optimizing the oxygen injection rate to the second reactor, the exergetic efficiency increased from 25.76 to 38.07.
机译：本文研究了在钾促进的氧化铁催化剂上乙苯的乙苯脱氢反应的高能分析。该研究的目的是减少过程中的工作损失。由于该单元的高能耗，使用了火用分析来优化苯乙烯生产单元和相关分馏单元的能耗。研究了预热器，第二反应器和苯甲苯塔，以优化能耗。观察到，液化天然气（LNG）型热交换器与预热器的结合提高了预热器的效率。同样，将苯-甲苯塔的压力从220 kPa降低到60 kPa，将燃烧效率从77.45提高到90.86，同时通过优化向第二反应器的氧气注入速率，燃烧效率从25.76增加到38.07。

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