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Thermodynamic analysis of chemical looping combustion integrated oxidative dehydrogenation of propane to propylene with CO2
Chemical Engineering and Processing: Process Intensification ( IF 3.8 ) Pub Date : 2020-05-25 , DOI: 10.1016/j.cep.2020.107959
N. Ruthwik , D. Kavya , A. Shadab , N. Lingaiah , C. Sumana

Oxidative dehydrogenation of propane (ODP) with CO2 for propylene production is gaining increasing attention in recent years due to the advantages of CO2 utilization, improved yield, and avoiding over oxidation problem. However, the process being highly endothermic, requires burning of fossil fuels to meet its heat demand leading to considerable CO2 emission. Therefore, in the present study, a novel eco-friendly scheme for propylene production has been proposed for the first time that integrates ODP−CO2 with chemical looping combustion (CLC) and it has the dual benefit of inherent CO2 capture as well as its utilization. Further, the process is made self-sustained by recovering surplus heat and generating steam for power generation. Steady state plant wide simulation model of integrated CLC-ODP−CO2 scheme is developed using ASPEN plus software. Rigorous sensitivity analysis has been performed to optimize the operating temperature, pressure and molar flowrates of oxygen carrier, CO2 and propane resulting a maximum propylene yield of 79.1 %. Overall energy analysis of the integrated CLC-ODP−CO2 scheme has resulted a net thermal efficiency of 73.48 %.



中文翻译:

CO 2丙烷化学环流燃烧集成氧化脱氢制丙烯的热力学分析

近年来,由于利用了CO 2,提高了收率并避免了过度氧化的问题,用CO 2进行丙烷的氧化脱氢(ODP)引起了丙烯的日益关注。然而,该过程是高度吸热的,需要燃烧化石燃料以满足其热需求,导致大量的CO 2排放。因此,在本研究中,首次提出了一种新型的丙烯生产环保方案,该方案将ODP-CO 2与化学回路燃烧(CLC)集成在一起,并具有固有CO 2的双重优势。捕获及其利用。此外,通过回收多余的热量并产生用于发电的蒸汽,该过程可以自我维持。使用ASPEN plus软件开发了集成CLC-ODP-CO 2方案的全厂稳态模型。进行了严格的灵敏度分析,以优化操作温度,压力和氧气载体,CO 2和丙烷的摩尔流量,从而使最大丙烯收率达到79.1%。集成的CLC-ODP-CO 2方案的整体能量分析得出净热效率为73.48%。

更新日期:2020-05-25
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