高含硫天然气处理厂脱硫装置能耗分析与优化OA

This study employed the Aspen HYSYS simulation model to conduct energy analysis and optimization of the desulfurization process in a medium-to-high sulfur natural gas processing plant.Through exergy analysis,sensitivity analysis,and pinch analysis,the exergy losses in key equipment,including the absorber,regenerator,lean amine solution cooler,and pressure control valve for the rich amine solution exiting the absorber,were identified and targeted energy-saving optimization measures were then proposed.The research results demonstrate that by increasing the feed temperature of the regenerator and optimizing the operation of the lean/rich amine solution heat exchanger,while ensuring compliance with the H2 S content specification in the purified gas,the heat load and steam consumption of the regenerator can be significantly reduced,with an estimated saving of 6.3 t/h of high-pressure steam.Additionally,by utilizing a hydraulic turbine to recover the pressure energy from the pressure control valve for the rich amine solution,an estimated 1 800 kW/h of electrical power can be recovered.The results effectively enhance energy utilization efficiency,reduce operational costs,and provide a technical reference for the green and efficient natural gas purification process.Wang Rujie,Liu Shanshan,Chen Bo,et al.Selective removal of H2 S over CO2 from natural gas by MEA-activated MDEA[J].Natural Gas Chemical Industry,2019,44(5):45-49.