Exxon Research and Engineering Company

Exxonmobil Research and Engineering Company

Other

Teh Chung Ho

Russell R Chianelli

Allan J Jacobson

Archie R Young, Ii

Stuart Leon Soled

Sabato Miseo

Michel A Daage

Viktor Buchholz

Roman Krycak

Kenneth L Riley

John Joseph Steger

Larry E McCandlish

Angelo A Montagna

Dean C Draemel

Stephen Harold Brown

Shun Chong Fung

Gary Brice McVicker

Edward Ira Stiefel

Jane Chi-Ya Cheng

Hyung Suk Woo

Daniel Paul Leta

Glen Barry Brons

William Ernest Lewis

George A Swan, Iii

Thomas R Halbert

Theresa A Pecoraro

Nicholas Charles Nahas

Richard Charles Dougherty

Leonard Schoenman

Tahmid I Mizan

Jackson I Ito

Wie-Hin Pan

Hilda Vroman

Charles Ralph Symon

Stephen John McCarthy

Gabor Kiss

David William Savage

Limin Song

Gordon Frederick Stuntz

David T Ferrughelli

Krishnan Kumaran

Hilda B Vroman

Bal K Kaul

Garland B Brignac

Kuangnan Qian

Zhiguo Hou

Michael Charles Kerby

Federico Barrai

Ronald Liotta

John Zengel

William Edward Wales

Chang S Hsu

Robert Charles Welch

Joseph T O'Bara

Iulian Nistor

Andrew C Moreland

Edward J Osterhuber

Gerald D Dupre

Gary Brice Mc Vicker

Gerald Dennis Dupre

Russel R Chianelli

Heavy oil feeds are hydroprocessed in the presence of a solvent and in the presence of a catalyst with a median pore size of about 85 &#x212b; to about 120 &#x212b; under conditions that provide a variety of benefits. The solvent can be an added solvent or a portion of the liquid effluent from hydroprocessing. The processes allow for lower pressure processing of heavy oil feeds for extended processing times or extended catalyst lifetimes be reducing or mitigating the amount of coke formation on the hydroprocessing catalyst.

Hydroprocessing of heavy hydrocarbon feeds using small pore catalysts

Methods for determining the fouling propensity of a hydrocarbon stream and for reducing fouling are provided. In one method, the fouling propensity of a hydrocarbon stream is determined by obtaining a parameter indicative of the fouling propensity by a regression of a series of temperature measurements data for the hydrocarbon stream exiting a test unit. In another method, an effective minimal amount of an antifoulant is added to a hydrocarbon stream to reduce fouling, where the amount of the antifoulant is determined based on the fouling propensity of the hydrocarbon stream.

Methods for mitigating fouling of process equipment

The behavior of a monitored condition over time for a reactor or reaction system can be analyzed using groupings or windows of data to identify anomalous features in the time-average values. Anomalous features can be identified based on a threshold value generated from the analysis. Based on identification of an anomalous feature, a corrective action can be taken. For example, when the monitored condition is the pressure drop across a catalyst bed, detection of an anomaly can indicate the time to initiate a wash process for the catalyst bed before a large drop in catalyst activity occurs. By detecting an anomaly at an earlier point in time, a wash cycle can be initiated earlier so that the wash is more effective at restoring the catalyst bed to a desired condition.

Mitigation of plugging in hydroprocessing reactors

Heavy oil feeds are hydroprocessed in the presence of a solvent under conditions that provide a variety of benefits. The solvent can be an added solvent or a portion of the liquid effluent from hydroprocessing. The processes allow for lower pressure processing of heavy oil feeds for extended processing times or extended catalyst lifetimes be reducing or mitigating the amount of coke formation on the hydroprocessing catalyst.

Hydroprocessing of heavy hydrocarbon feeds

A process for hydrotreating a first aromatics- and sulfur-containing hydrocarbon feed using a fresh supported CoMo catalyst, includes treating the fresh catalyst under first hydrotreating conditions with a second hydrocarbon feed having a lower aromatics content than the first feed.

Hydrotreating process

This invention is directed to a process for producing a hydroprocessed product. The invention is particularly advantageous in that substantially less hydrogen is absorbed during the process relative to conventional hydroprocessing methods. This benefit is achieved by using a particular solvent as a co-feed component. In particular, the solvent component contains at least one single ring aromatic compound and has a relatively low boiling point range compared to the heavy hydrocarbon oil component used as another co-feed component.

Use of low boiling point aromatic solvent in hydroprocessing heavy hydrocarbons

Methods for determining the fouling propensity of a hydrocarbon stream and for reducing fouling are provided. In one method, the fouling propensity of a hydrocarbon stream is determined by obtaining a parameter value indicative of the fouling propensity at no less than two different temperatures, and an activation energy of fouling by the hydrocarbon stream is derived therefrom. In another method, the thus obtained parameter value at no less than two different temperatures and the activation energy are used to select proper heating fluids and operating temperature and to determine whether to add an antifoulant to the hydrocarbon stream to reduce fouling at a given temperature.

Methods for identifying high fouling hydrocarbon and for mitigating fouling of process equipment

The present invention relates to a catalytic process for removing organonitrogen species from hydrocarbon mixtures such as refinery process feedstreams. More particularly, this invention relates to a new operating and catalyst loading strategies based on organonitrogen concentration, composition, and structure.

Operating method for hydrodenitrogenation

The distillate catalytic hydrodesulfurization of hydrocarbon fuels wherein the optimum hydrogen treat gas rate to maximize desulfurization is determined and introduced into the reaction zone to maintain a controlled amount of hydrogen at the surface of the catalyst during hydrodesulfurization.

Deep hydrodesulfurization of hydrocarbon feedstreams

The present invention relates to an apparatus and a process for the high-throughput, quick screening, optimization, regeneration, reduction and activation of catalysts. More specifically, the present invention is a method and apparatus to quickly screen, optimize and regenerate multiple fast deactivating catalysts while maintaining a predefined range of time-on-stream.

Method and apparatus for high throughput catalysts screening and optimization

A process for hydroprocessing petroleum and chemical feedstocks by use of a bulk multimetallic catalyst comprised of at least one Group VIII non-noble metal and at least one, preferably two Group VIB metal wherein the ratio of Group VIB metal to Group VIII metal is from about 10:1 to 1:10.

Hydroprocessing using bulk Group VIII/Group VIB catalysts

A cavitation enhanced atomizing process comprises forming a flowing solution of the liquid to be atomized and a lower boiling cavitating liquid. This flowing solution is then contacted with a pressure reducing means, at a temperature below the bubble point of the cavitating liquid in the solution, to produce cavitation bubbles. These bubbles comprise cavitation liquid vapor and the bubble nucleation produces a two-phase fluid of the bubbles and liquid solution. The two-phase fluid is passed downstream into and through an atomizing means, such as an orifice, and into a lower pressure atomizing zone, in which the bubbles vaporize to form a spray of liquid droplets. The nucleated bubbles also grow in size as the so-formed two-phase fluid passes downstream to and through the atomizing means.

Cavitation enhanced liquid atomization

A process and apparatus for atomizing a fluid is disclosed. The processes and apparatuses are useful for atomizing a feed oil for a fluid cat cracking (FCC) or other suitable process.

Fluid atomization process

An atomizing gas, such as steam, and a hot fluid comprising a hot liquid to be atomized, are passed under pressure, through separate fluid conduits in a heat exchange means, in which the hot liquid heats the steam to a superheat temperature, by indirect heat exchange. The superheated steam is then injected into the hot fluid, which comprises a two-phase fluid comprising steam and the hot liquid, subsequent to the superheated steam injection. The two-phase fluid is passed through an atomizing means, such as an orifice, into a lower pressure atomizing zone, which causes the steam to expand and atomize the liquid into a spray of liquid droplets. The two-phase fluid is formed before or as a consequence of the superheated steam injection and is preferably steam-continuous when passed through the atomizing means. This process is useful for atomizing a hot feed oil for a fluid cat cracking (FCC) process.

Superheating atomizing steam with hot FCC feed oil

A hydrodenitrogenation catalyst is prepared by decomposing a nickel (ammonium) molybdotungstate precursor and sulfiding, either pre-use or in situ, the decomposition product.

Nickel molybodtungstate hydrotreating catalysts (law444)

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Bridgewater, NJ, United States of America

Teh Chung Ho