Exxon Research and Engineering Company

Darryl P Klein

Michel A Daage

Gary Brice McVicker

Edward Stanley Ellis

Michele Sue Touvelle

Sylvain S Hantzer

James J Schorfheide

William C Baird, Jr

David E Vaughan

Jingguang Chen

David E W Vaughan

Carl W Hudson

Jingguang G Chen

Paul Joseph Berlowitz

Robert J Wittenbrink

Ian A Cody

Bruce R Cook

Joseph Ernest Baumgartner

Alberto Ravella

Owen C Feeley

William C Baird Jr

A process for the hydrodesulfurization (HDS) of multiple condensed ring heterocyclic organosulfur compounds present in petroleum and petrochemical streams over noble metal-containing catalysts under relatively mild conditions. The noble metal is selected from Pt, Pd, Ir, Rh, and polymetallics thereof. The catalyst system also contains a hydrogen sulfide sorbent material.

Desulfurization process for refractory organosulfur heterocycles

A process for the hydrodesulfurization (HDS) of multiple condensed ring heterocyclic organosulfur compounds present in petroleum and petrochemical streams and the saturation of aromatics over noble metal-containing catalysts under relatively mild conditions. The noble metal is selected from Pt, Pd, Ir, Rh and polymetallics thereof. The catalyst system also contains a hydrogen sulfide sorbent material.

Desulfurization and aromatic saturation of feedstreams containing refractory organosulfur heterocycles and aromatics

A process for the hydrodesulfurization (HDS) of multiple condensed ring heterocyclic organosulftir compounds found in petroleum and petrochemical streams. HDS is preferably conducted in a mixed bed containing: (a) a Ni-based catalyst on an inorganic refractory support, and (b) a hydrogen sulfide sorbent material. The desulfurized stream can then be passed to further processing, including aromatics saturation and/or ring opening.

Desulfurization of petroleum streams containing condensed ring heterocyclic organosulfur compounds

A three stage process for producing high quality white oils, particularly food grade mineral oils from mineral oil distillates. The first reaction stage preferably employs a sulfur resistant hydrotreating catalyst and produces a product suitable for use as a high quality lubricating oil base stock. The second reaction stage preferably employs a hydrogenation/hydrodesulfurization catalyst combined with a sulfur sorbent and produces a product stream which is low in aromatics and which has substantially &ldquo;nil&rdquo; sulfur. The final reaction stage employs a selective hydrogenation catalyst that produces a product suitable as a food grade white oil.

Process for the production of medicinal white oil

A process for the hydrodesulfurization (HDS) of the multiple condensed ring heterocyclic organosulfur compounds and the ring opening of ring compounds present in petroleum and petrochemical streams. The process is conducted in the presence of hydrogen, one or more noble metal catalysts, and a hydrogen sulfide sorbent material.

Desulfurization and ring opening of petroleum streams

A process for producing distillate fuels, such as diesel fuels and jet fuels having both high lubricity and low sulfur levels. Such fuels are produced by fractionating a distillate feedstream into a light fraction which is relatively low in lubricity and which contains from about 50 to 100 wppm of sulfur and a heavy fraction having a relatively high lubricity. The first fraction is hydrotreated to remove substantially all of the sulfur and is then blended with the second fraction to produce a distillate fuel product having relatively low sulfur levels and a relatively high lubricity.

Process for the production of high lubricity low sulfur distillate fuels

Desulfurization and aromatic saturation of feedstreams containing

Naphthenic rings in naphthenic ring-containing compounds in a feedstream are selectively opened wherein at least about 50 wt. % of the ring compounds in the feedstream are characterized as containing at least one C.sub.6 ring having at least one substituent containing 3 or more carbon atoms. The naphthenic rings are opened without significant dealkylation of any pendant substituents on the ring. The feedstream, containing such compounds, is contacted with a supported catalyst containing a metal selected from Ir, Ru, or a mixture thereof, which catalyst when reacted with a feed comprised of 20 wt. % n-butylcyclohexane in heptane diluent will result in: a) at least a 10% yield of C.sub.10 paraffin yield/%C.sub.10 ring disappearance.

Process for selectively opening naphthenic rings

Growing community of inventors

Baton Rouge, LA, United States of America

Darryl P Klein