Simulation optimization and application of processing route of heavy naphtha from slurry bed
The NHTR-SIM and HCR-SIM process simulation software developed by KBC company of UK were used to simulate and optimize the whole process of naphtha hydrogenation unit and diesel hy-drocracking unit respectively.The processing opti-mization scheme of slurry bed heavy naphtha from all mixed in 3.5 Mt/a diesel hydrocracking unit to all mixed in 3.6 Mt/a naphtha hydrogenation unit,and then into the continuous reforming unit was pro-posed.The results showed that when the slurry bed heavy naphtha was blended in the simulated naphtha hydrogenation unit,the sulfur and nitrogen contents of the refined heavy naphtha were 0.37,0.42 µg/g,respectively,which met the requirements of the re-forming unit feed less than 0.5 μg/g,and the scheme was feasible.After the optimization and implementa-tion,although the scheme had only been operated collaboratively for more than half a year,a total of 204.7 kt of slurry bed heavy naphtha had been pro-cessed,and the amount of raw material processing of diesel components increased by 178.2 kt,it re-sulted in the company's comprehensive benefit in-crement of 79.283 million yuan in 2022.
the slurry bed residue hydrogenation unitheavy naphthanaphtha hydrogenation unitdiesel hydrocracking unitsimulation and optimiza-tion
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