Process simulation and optimization of diesel hydro-upgrading unit based on Aspen HYSYS software
The whole process model of the diesel hydro-upgrading unit was established by Aspen HYSYS software.The effects of operation parame-ters such as reactor inlet temperature,hydrogen to oil volume ratio and naphtha production at the top of the fracking tower on the hydrogen consumption,naphtha production and quality were investigated.The operation parameters were simulated and opti-mized on the basis of meeting the accuracy require-ments.The results showed that increasing the inlet temperature and hydrogen to oil volume ratio of the modified reactor was beneficial to increasing the naphtha yield,but the catalyst bed temperature was too high to affect the catalyst life.The dry point of naphtha,the flash point of refined diesel oil and the temperature at the top of the tower could be in-creased by increasing the naphtha output.Under the optimal operating conditions of reducing the hydro-gen to oil volume ratio from 1 400 to 1 200 and in-creasing the naphtha dry point from 170.0℃to 173.5℃,the medium pressure steam consumption could be saved by 2.92 t/h and the naphtha produc-tion could be increased by 1.1 t/h.
diesel hydro-upgradingprocess simulationAspen HYSYS softwarehydrogen to oil volume rationaphthadry point
万方数据
维普
