Exxonmobil Chemical Patents Inc.

Michael J Veraa

James Richardson Lattner

Michael W Weber

Christopher David William Jenkins

Keith Holroyd Kuechler

Guang Cao

Cor F Van Egmond

Richard B Hall

Michael Peter Nicoletti

Steven E Silverberg

John Richard Shutt

Thomas Herman Colle

Jimmy L Tardy

Randy L Foster

Disclosed herein are methods and apparatus for deactivating a catalyst composition in an reaction product stream. One such method and apparatus contact the catalyst composition with a catalyst-deactivating composition and a diluent in a vapor phase of a product-receiving vessel, wherein the boiling point of the diluent is at least 5.0&#xb0; C. greater than the boiling point of the catalyst-deactivating composition. Also disclosed are oligomerization systems for producing oligomers.

Methods and apparatus for deactivating a catalyst composition

This disclosure relates generally to low temperature steam stripping methods for byproduct polymer and solvent separation from an ethylene oligomerization process. The methods disclosed have been found to separate byproduct polymer from solvent without fouling process equipment or causing other process problems. The byproduct polymer ends up as flowable solid particles in a water stream that may be easily discharged from the process, while solvent is recovered for recycle to the process. In embodiments of the invention, over 90 wt % of the solvent used is recovered and the discharged byproduct polymer is less than 20 wt % solvent.

Low temperature steam stripping for byproduct polymer and solvent recovery from an ethylene oligomerization process

This invention is directed to a process for producing olefin product from an oxygenate feed that includes dimethyl ether (DME). The process uses an olefin forming catalyst that contains a porous crystalline material, preferably a porous crystalline aluminosilicate molecular sieve material. The process produces high quantities of light olefin (i.e., ethylene, propylene, and mixtures thereof).

Production of light olefins

A method of producing synthesis gas for methanol synthesis that comprises the steps of: (a) obtaining a hydrogen stream that has greater than 5 mol % methane from an external process; (b) feeding into a reforming reactor: (i) a feed gas that comprises methane, (ii) water in a specified amount, (iii) oxygen in a specified amount, and (iv) the hydrogen stream in a specified amount; (c) reacting the feed gas, water, oxygen and the hydrogen stream in the reactor; and (d) withdrawing from the reactor the synthesis gas that is at a specific temperature, has less than 3 mol % methane, and has a stoichiometric number of from 1.9 to 2.3.

Synthesis gas production and use

This invention is directed to methods of removing water and other condensable materials, as well as solids particles such as catalyst particles, from olefin product streams so as to reduce fouling in the liquid and vapor separation equipment. In order to reduce fouling or contamination in the condensing or quenching process, this invention includes adding a hydrocarbon to at least a portion of the condensed liquid fraction in an amount that effects separation of the liquid fraction into upper and lower fractions.

Separation of olefin vapor from liquid fraction to reduce fouling

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Houston, TX, United States of America

Michael J Veraa