Exergy, Exergoeconomic and Exergoenvironmental Analysis in Natural Gas Liquid Recovery Process

In this work, the real case study of the energy quality of the natural gas liquid recovery plant ۸۰۰ is evaluated via exergy, exergy economy, and exergy environmental methods. The corresponding simulation is carried out using Aspen HYSYS V۱۰ software and Matlab. Sensitivity analysis will evaluate energy consumption, environmental impact, and the economics of inefficient equipment. The exergy analysis results show that the compressor (K۱۰۳) and the heat exchanger (E۱۰۱) with the highest exergy destruction are ۵۱۰ and ۶۲۹ kW, respectively. Improving the performance of these equipment can reduce exergy destruction and increase exergy efficiency. Furthermore, the results indicate that the main improvement priority belongs to the compressor (K۱۰۳). According to the results of the exergoeconomic evaluation, the maximum value of the exergoeconomic factors belongs to the heat exchanger (E۱۰۳). It should be replaced by a cheaper one. Furthermore, E۱۰۰ and K۱۰۲ have the potential for economic improvement in terms of their high exergy destruction and the relative cost difference. Furthermore, their low values of exergoeconomic factors show dominance in the exergy-related cost part. Improving the performance of these devices will significantly reduce the overall cost rate by up to ۴۰%. The results show that the main improvement priority based on the exergoeconomic concept belongs to the compressor (K۱۰۲). The highest value of the exergoenvironmental factor belongs to the heat exchanger (E-۱۰۳) by ۹۹%. This shows its high LCA environmental impact. The total impact rate may be reduced by up to ۹۷ percent by optimizing the equipment's operating and maintenance parameters. Environmental results show that E۱۰۱ and P۱۰۰ have the potential for improvement. Improving the performance of these devices will significantly reduce the overall environmental impact by up to ۴۰%. Furthermore, the main priority for improvements based on the exergoenvironmental concept belongs to the heat exchanger (E۱۰۱).

کلیدواژه ها:

NGL plant ، Exergy Analysis ، Environmental analysis ، Exergoeconomic Analysis ، Improvement criteria