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Improved deep desulphurisation of middle distillates by a two-phase reactor with pre-saturator

Title data

Wache, Wieland ; Datsevich, Leonid ; Jess, Andreas ; Neumann, Gerhard:
Improved deep desulphurisation of middle distillates by a two-phase reactor with pre-saturator.
In: Fuel. Vol. 85 (2006) Issue 10–11 . - pp. 1483-1493.
ISSN 0016-2361
DOI: https://doi.org/10.1016/j.fuel.2005.12.019

Official URL: Volltext

Abstract in another language

Hydrodesulphurisation (HDS) of middle distillates is up to now performed in trickle bed reactors equipped with an expensive H2-recycle. To meet future low S-limits, hydrotreating of already pre-desulphurised oils is needed. The H2-supply is then far beyond what is chemically consumed. In addition, conventional three-phase HDS-reactors are generally problematic with respect to mass transfer, hydrodynamics, and therefore, scale-up. In this paper, an improved HDS-concept based on a two-phase reactor is discussed. The oil is thereby externally saturated with H2 and only the liquid is passed over the fixed bed. This concept was proven by experiments with light fuel oils (582 and 2252 ppm S, CoMo-catalyst, 1–6 MPa, 330–400 °C, up to 100 days continuous operation). In addition, kinetic studies were done with model oil consisting of a mixture of n-dodecane and selected S-species such as di-, tri- and tetra-methyl-dibenzothiophenes. In case of the presented two-phase concept, the H2-recycle is redundant, the intrinsic reaction rate can be utilised (and accurately measured), and scale-up problems do not occur.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Fuel oil; Multi-phase reactors; Deep desulphurisation
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Chemical Engineering
Faculties > Faculty of Engineering Science > Chair Chemical Engineering > Chair Chemical Engineering - Univ.-Prof. Dr.-Ing. Andreas Jess
Faculties
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
600 Technology, medicine, applied sciences > 600 Technology
600 Technology, medicine, applied sciences > 620 Engineering
600 Technology, medicine, applied sciences > 660 Chemical engineering
Date Deposited: 27 Apr 2015 06:32
Last Modified: 27 Apr 2015 06:32
URI: https://eref.uni-bayreuth.de/id/eprint/11162