Exxonmobil Research and Engineering Company

Exxonmobil Chemical Patents Inc.

Gregory J DeMartin

Sebastian Carmen Reyes

Harry William Deckman

Karl Gottlieb Strohmaier

Jose G Santiesteban

Bruce T Kelley

Ronald Richard Chance

Paul Scott Northrop

Eugene R Thomas

John Henry Sinfelt

Michel A Daage

Lei Zhang

Edward William Corcoran, Jr

Jason M McMullan

Venkatesan V Krishnan

Frank Hershkowitz

Ajit Bhaskar Dandekar

Patrick Loring Hanks

Charles Lambert Baker, Jr

Amar S Wanni

Ronald M Gould

John Stephen Szobota

Krista Marie Prentice

Krishnan V Venkatesan

X B Cox, Iii

Anastasios Ioannis Skoulidas

Systems and methods are provided for performing field enhanced separations on a feed, such as a petroleum feed, a refinery feed, or another type of hydrocarbonaceous feed. The system can allow for increased throughput of feed per volume of the separation device or system while performing a desired amount of field enhanced separation. The field enhanced separation can include separation by thermal diffusion, optionally enhanced by the presence of an electric field in the channel for performing the separation by thermal diffusion.

Field enhanced separation apparatus

Systems and methods are provided for using field enhanced separations to produce multiple fractions from a petroleum input. A liquid thermal diffusion and/or electric field separation is used to produce the fractions. The fractions can then be used to form multiple outputs that share a first feature while being different with regard to a second feature. For example, a first fraction from the plurality of fractions can have a desired value for a first property such as viscosity index. Two or more additional fractions from the plurality of fractions can then be blended together to make a blended fraction or output. The blended fraction can have a value for the first property that is substantially similar to the value for the first fraction. However, for a second property, the first fraction and the blended fraction can have distinct values. As a result, multiple output fractions can be formed that share a first feature but differ in a second feature.

Field enhanced separation of hydrocarbon fractions

The removal of one or more of the gases CO, Nand HS from gas mixtures containing at least one of said gases with use of an 8-ring zeolite having a Si:Al ratio from about 1:1 to about 1000:1. The preferred gas mixture is a natural gas feedstream and the preferred 8-ring zeolite is DDR.

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The present invention relates the separation of a target gas from a mixture of gases through the use of engineered structured adsorbent contactors in pressure swing adsorption and thermal swing adsorption processes. Preferably, the contactors contain engineered and substantially parallel flow channels wherein 20 volume percent or less of the open pore volume of the contactor, excluding the flow channels, is in the mesopore and macropore range.

Process for removing a target gas from a mixture of gases by swing adsorption

The present invention relates to the separation of one or more of CO, N, and HS gas components from a gas mixture containing at least a second gas using a swing adsorption process unit. The adsorbent contactors of the swing adsorption process unit are engineered structured adsorbent contactors having a plurality of flow channels wherein 20 volume percent or less of the open pore volume of the contactors is in the mesopore and macropore range.

The present invention is a separation process for producing a methanol, ethanol and/or dimethyl ether stream from a first stream containing C+ hydrocarbons. The first stream comprises C+ hydrocarbons, methanol, ethanol and/or dimethyl ether. The process comprises the step of passing the first stream through an adsorbent bed having a crystalline microporous material that preferentially adsorbs methanol, ethanol and/or dimethyl ether over the C+ hydrocarbons.

Separation of methanol, ethanol and/or dimethyl ether from hydrocarbon mixtures

The present invention is a process for separating propylene and dimethylether from a mixture comprising propylene, dimethylether, and propane. The mixture is passed through a bed of an adsorbent comprising a porous crystalline material having (i) diffusion time constants for dimethylether and propylene of at least 0.1 sec , and (ii) a diffusion time constant for propane of than 0.02 of the diffusion time constants for dimethylether and propylene. The bed preferentially adsorbs propylene and dimethylether from the mixture. The adsorbed propylene and dimethylether are then desorbed from the bed.

Separation of propylene and dimethylether from hydrocarbon mixtures

In a process for separating propylene from a mixture comprising propylene and propane, the mixture is passed through a bed of an adsorbent comprising a porous crystalline material having (i) a diffusion time constant for propylene of at least 0.1 sec , when measured at a temperature of 373&deg; K and a propylene partial pressure of 8 kPa, and (ii) a diffusion time constant for propane, when measured at a temperature of 373&deg; K and a propane partial pressure of 8 kPa, less than 0.02 of said diffusion time constant for propylene. The bed preferentially adsorbs propylene from the mixture. The adsorbed propylene is then desorbed from the bed either by lowering the pressure or raising the temperature of the bed.

Separation of propylene from hydrocarbon mixtures

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Flemington, NJ, United States of America

Gregory J DeMartin