Mestre-Escudero Rayme, Puerta-Arana Alejandro, González-Delgado Ángel Darío
Chemical Engineering Department, Nanomaterials and Computer Aided Process Engineering Research Group (NIPAC), University of Cartagena, Avenida del Consulado Calle 30 No. 48-152, Cartagena 130015, Colombia.
ACS Omega. 2020 Aug 20;5(34):21428-21436. doi: 10.1021/acsomega.0c01791. eCollection 2020 Sep 1.
In this work, the mercaptan oxidation unit of an oil and gas refinery was simulated and assessed using exergy and parametric sensitivity analysis to identify opportunities for improvement from a technical and energy point of view. The process simulation was performed using Aspen HYSYS V10.1 to obtain extended mass and energy balances. The simulation results were validated with the data available in the literature. The effects of operating conditions on technical performance were analyzed via parametric analysis. The exergy analysis was applied to two case studies: the base case and the resulting case from technical improvements. The global exergy efficiency, irreversibilities, exergy of utilities, and efficiencies per stage were calculated to map process equipment with the highest losses of exergy. A comparison between both base and alternative cases was introduced in order to analyze increments in exergy efficiencies. An exergy efficiency of 84.21% was found for the base case, while for the alternative case after applying parametric sensitivity, it was calculated to be 81.95%. This decrease by 2.26% was attributed to the increase of irreversibilities and exergy of wastes to achieve a product with better quality standards.
在这项工作中，利用火用和参数敏感性分析对一家炼油厂的硫醇氧化装置进行了模拟和评估，以便从技术和能源角度确定改进机会。使用Aspen HYSYS V10.1进行过程模拟，以获得扩展的物料和能量平衡。模拟结果与文献中的可用数据进行了验证。通过参数分析研究了操作条件对技术性能的影响。对两个案例进行了火用分析：基础案例和技术改进后的结果案例。计算了全局火用效率、不可逆性、公用工程的火用以及各阶段的效率，以确定火用损失最大的工艺设备。对基础案例和替代案例进行了比较，以分析火用效率的增量。基础案例的火用效率为84.21%，而应用参数敏感性后的替代案例计算得出的火用效率为81.95%。下降2.26%归因于不可逆性和废物火用的增加以获得质量标准更好的产品。
