2020 REFINING PROCESSES HANDBOOK PROCESS CATEGORIES COMPANY INDEX DISTILLATION Vacuum Distillation Heater Vacuum tower Side strippers (optional) Vacuum gasoil Application: The process produces vacuum distillates that are suitable for lubricating oil production by downstream units, and as feedstocks to FCC and hydrocracker units. Description: Feed is preheated in a heat-exchanger train and fed to the fired heater. The heater outlet temperature is controlled to produce the required quality of vacuum distillates and residue. Structured packings are typically used as tower internals to achieve low flash zone pressure and, thus, maximize distillate yields. Circulating reflux streams enable maximum heat recovery and reduced column diameter. A wash section immediately above the flash zone ensures that the metals content in the lowest side draw is minimized. Heavy distillate from the wash trays is recycled to the heater inlet, or withdrawn as metals cut. When processing naphthenic residues, a neutralization section may be added to the fractionator. BFW/STM STM BFW Low visc. Medium visc. Feed: Atmospheric bottoms from crude oils (atmospheric residue) or hydrocracker bottoms. High visc. Product: Vacuum distillates of precisely defined viscosities, flash points (for lube production) and low metals content (for FCC and hydrocracker units), as well as vacuum residue with specified softening point, penetration and flash point. Installations: Numerous installations using the thyssenkrupp proprietary technology are in operation worldwide. To vacuum system Metals cut Vac. residue Feed Website: www.thyssenkrupp-industrial-solutions.com Contacts: sandra.jensen@thyssenkrupp.com, dorothe.weimer@thyssenkrupp.com Copyright © 2020 Gulf Energy Information. All rights reserved.http://www.hydrocarbonprocessing.com/ http://www.thyssenkrupp-industrial-solutions.com