Process for desulphurization of a hydrocarbon stream with a...

Details Process for desulphurization of a hydrocarbon stream with a... Process for desulphurization of a hydrocarbon stream with a...

2005-07-06

2008-10-07

Nguyen, Tam M. (Department: 1797)

Mineral oils: processes and products

Refining

Sulfur removal

C208S209000, C208S213000, C208S079000, C208S095000, C585S252000, C585S411000

Reexamination Certificate

active

07431828

ABSTRACT:
A two-stage hydrotreating process is disclosed wherein a hydrocarbon stream is first desulphurized followed by a dehydrogenation step, which process comprises in combination contacting the feed and hydrogen over a hydrotreating catalyst at hydrotreating conditions, heating the hydrotreated effluent and hydrogen-rich gas from the hydrotreating reactor and contacting said effluent and hydrogen gas over a hydrotreating catalyst in a post-treatment reactor at a temperature sufficient to increase the polyaromatic hydrocarbon content and lower the hydrogen content of said effluent.

REFERENCES:
patent: 6103105 (2000-08-01), Cooper et al.
patent: 6264827 (2001-07-01), Okazaki et al.
patent: 7300567 (2007-11-01), Breivik et al.

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