Catalytic hydrotreatment of refinery waste
The object of the project is to produce liquid hydrocarbons by the catalytic hydroprocessing of solid refinery wastes (hard pitches) in order to improve the profitability of deep conversion processes and reduce the excess production of heavy fuels. The project was carried out mostly on the ASVAHL demonstration platform site, at Solaize. Hard pitches were produced primarily by deasphalting of atmospheric or vacuum distillation residues. The project included two experimental phases and an economic evaluation study phase. In phase 1, two granular catalysts were used to transform pitch into standard low sulphur fuel oil. These were a continuously moving bed, with demetallation and conversion catalyst and a fixed bed with hydrorefining catalyst. In phase 2 it was proved that a hydrotreatment process using a finely dispersed catalyst in the feedstock, can, under realistic operating conditions, transform with good yields hard pitch into distillates that can be refined through standard methods. In phase 3, it was shown that the economics of such processes are tightly linked to the price differential between "white" and "black" oil products, which is expected to increase in the future. Environmental constraints will impel the use of such methods, thus avoiding the co-production of polluting solid residues.
Bibliographic Reference: EUR 12097 EN (1989) FS, 21 pp., ECU 5
ISBN: ISBN 92-825-9960-4;CD-NA-
Record Number: 198910926 / Last updated on: 1994-12-01
Original language: en
Available languages: en