Exxonmobil Chemical Patents Inc.

S Mark Davis

Paul F Keusenkothen

Stephen Harold Brown

Richard Charles Stell

Jiunn-Shyan Liou

Larry Lee Iaccino

Teng Xu

Steven E Silverberg

Howard J Freund

John J Waldrop

Frank Hershkowitz

Tan-Jen Chen

Luc R M Martens

Neeraj Sangar

Marcel J G Janssen

Charles John Mart

Frank C Wang

John D Y Ou

Philip Andrew Ruziska

Xiaobo Zheng

Arthur R Di Nicolantonio

Arthur R DiNicolantonio

Keith G Reed

Paul Michael Edwards

Ananthakrishnan Bhasker

Paul M Edwards

This invention relates to a process and system for cracking hydrocarbon feedstock containing vacuum resid comprising: (a) subjecting a vacuum resid to a first thermal conversion in a thermal conversion reactor (such as delayed coker, fluid coker, Flexicoker&#x2122;, visbreaker and catalytic hydrovisbreaker) where at least 30 wt % of the vacuum resid is converted to material boiling below 1050&#xb0; F. (566&#xb0; C.); (b) introducing said thermally converted resid to a vapor/liquid separator, said separator being integrated into a steam cracking furnace, to form a vapor phase and liquid phase; (c) passing said vapor phase to the radiant furnace in said steam cracking furnace; and (d) recovering at least 30 wt % olefins from the material exiting the radiant furnace (based upon the weight of the total hydrocarbon material exiting the radiant furnace).

Integrated process for steam cracking

The invention relates to processes for converting hydrocarbons to olefins products such as ethylene and propylene. The invention also relates to polymerizing the olefins, and to equipment useful for these processes.

Hydrocarbon conversion process

A selective hydrogenation process that is particularly effective in selectively hydrogenating alkynl compounds, such as acetylene or methyl acetylene, over alkenyl compounds, such as ethylene, is described. The process utilizes a slurry conversion unit for heat efficiency purposes during the conversion of acetylene into ethylene.

Selective hydrogenation of alkynyl-containing compounds and polyunsaturated compounds

In a hydrocarbon upgrading process, a hydrocarbon feed is treated in at least one of a steam cracker, catalytic cracker, coker, hydrocracker, and reformer under suitable conditions to produce a first stream comprising olefinic and aromatic hydrocarbons. A second stream composed mainly of C+ olefinic and aromatic hydrocarbons is recovered from the first stream and is fed together with a methylating agent to a reaction zone containing a catalyst under reaction conditions including a temperature of about 450&#xb0; C. to about 700&#xb0; C., such that aromatics components in the second stream undergo dealkylation, transalkylation and/or methylation and aliphatic components undergo cracking and aromatization to produce a third stream having an increased xylene content compared with said second stream and a C&#x2212; olefin by-product. The C&#x2212; olefin by-product is recovered and para-xylene is removed from at least part of said third stream.

Process for the production of xylenes and light olefins

The invention relates to a hydroprocessed product that can be produced by hydroprocessing tar, such as a tar obtained from hydrocarbon pyrolysis. The invention also relates to methods for producing such a hydroprocessed product, and the use of such a product, e.g., as a fuel oil blending component.

Hydroprocessed product

The invention relates to upgraded pyrolysis products, processes for upgrading products obtained from hydrocarbon pyrolysis, equipment useful for such processes, and the use of upgraded pyrolysis products.

Upgrading hydrocarbon pyrolysis products

A selective hydrogenation method is particularly effective in selectively hydrogenating alkynyl compounds, such as acetylene or methyl acetylene, over alkenyl compounds, such as ethylene. The method produces a relatively high quantity of heat during the selective hydrogenation reaction. This production of heat is, however, quite beneficial in that enough heat is produced such that a substantial portion of the produced heat can be recovered for heat efficiency purposes.

Selective hydrogenation of alkynyl-containing compounds

A process and apparatus for cracking a hydrocarbon feed containing resid, comprising: heating a hydrocarbon feedstock containing resid; passing said heated hydrocarbon feedstock to a vapor/liquid separator; flashing said heated hydrocarbon feedstock in said vapor/liquid separator to form a vapor phase and a liquid phase containing said resid; passing at least a portion of said resid-containing liquid phase from said vapor/liquid separator to a thermal conversion reactor operating at 649&#xb0; C. or more, wherein the thermal conversion reactor contains coke particles; and converting at least a portion of said resid into olefins.

Integrated vacuum resid to chemicals conversion process

The invention provides a method for converting an olefinic hydrocarbon feedstock to propylene comprising: contacting a hydrocarbon feedstock under catalytic cracking conditions with a catalyst comprising a catalyst selected from the group consisting of SAPO catalysts, MeAPO catalysts, MeASPO catalysts, ElAPO catalysts, ElASPO catalysts, rare earth exchanged catalysts from any of the preceding groups, and mixtures thereof, under cracking conditions to selectively produce propylene. The invention further provides a method for stabilizing a catalyst to steam from the foregoing group by ion exchange with a rare earth metal. A catalyst has enhanced stability as used herein when treated with a rare earth metal or metals in a concentration effective to provide a catalyst which exhibits a higher conversion of a hydrocarbon feedstock to propylene than does an equal quantity of an untreated sample of the same catalyst under the same conditions following exposure of each catalyst to steam for a period of at least 10 hours.

Method for selectively producing propylene by catalytically cracking an olefinic hydrocarbon feedstock

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Humble, TX, United States of America

S Mark Davis