Exxonmobil Research and Engineering Company

Georgia Tech Research Corporation

Algenol Biotech LLC

Exxonmobil Technology and Engineering Company

Membrane Technology and Research, Inc

Algenol Biofuels, Inc.

Algenol Biofuels Switzerland Gmbh

Benjamin A McCool

Randall David Partridge

Dhaval Ajit Bhandari

Ronald Richard Chance

Ryan Paul Lively

Dennis G Peiffer

Harry William Deckman

David Charles Calabro

Quanchang Li

Carla S Pereira

Michael Siskin

Lisa Saunders Baugh

Pavel Kortunov

Michael P Lanci

Yogesh V Joshi

Dong-Yeun Koh

Michelle Dose

Richard W Baker

Abhimanyu Onkar Patil

Allen Wayne Burton

William John Koros

Ajit Bhaskar Dandekar

David T Ferrughelli

Christopher W Jones

Timothy D Shaffer

Sankar Nair

Brian Michael Weiss

Heike Enke

Roberto Garcia

Changyub Paek

Yu Huang

Shamel Merchant

Benjamin Moll

Karola Knuth

Beth A Winsett

Rong Dong

Herbert W Barry

William Drake

James Noel

Stanley E Jakubowicz

Chil-Hung Cheng

William Porubsky

Ryan Adams

Brian M P Weiss

Juliane Metzner

A molecular separation method can include: passing a deasphalted oil stream through a reactor containing an active substrate, wherein the catalytic active substrate adsorbs heteroatom species from the deasphalted oil stream and produces a pretreated hydrocarbon feed stream essentially free of 4+ ring aromatic molecules (ARC 4+ species), metal species, and heteroatom species; and chromatographically separating with a simulated moving bed apparatus or a true moving bed apparatus (SMB/TMB) the pretreated hydrocarbon feed stream into a saturate fraction and an aromatics fraction.

Molecular separations process

Disclosed are methods and apparatuses for separating a wax product from a hydrocarbon feedstream by a) conducting a hydrocarbon feedstream to a membrane separation zone; b) retrieving at least one retentate product stream from the first side of the membrane element; c) retrieving at least one permeate product stream having a wax phase and an oil phase from a second side of the membrane element, wherein a pour point of the wax phase of the permeate product stream is higher than a pour point of the oil phase of permeate product stream; and d) separating a wax product from the wax phase of the permeate product stream.

Methods for separating wax products from hydrocarbon feedstreams

Methods and systems are provided herein utilizing a membrane cascade to separate a hydrocarbon feed into boiling point fractions. Also provided herein are methods for selecting membranes for said cascades to achieve the desired boiling point fraction separation.

Boiling free fractionation of hydrocarbon streams utilizing a membrane cascade

Systems and methods are provided for performing selective catalytic reduction on engine exhaust using ethanol from the engine fuel as the reducing agent. Fuel from a fuel tank or other fuel source can be passed through a separation module to produce a fuel stream with a reduced ethanol content and an ethanol-enriched fraction. After combustion of fuel under lean conditions, the combustion exhaust can be exposed to a catalyst system in the presence of the ethanol-enriched fraction.

Treatment of combustion exhaust

Systems and methods are provided for performing on-board separation of a fuel into a higher octane fuel fraction and a lower octane fuel fraction using a membrane under osmosis conditions. By performing the separation under osmosis conditions, the feed for separation can be exposed to the membrane without requiring prior heating. This can avoid the need for having a separate heat exchanger system for heating the feed to the membrane to a desired temperature range. Additionally or alternately, the permeate from the membrane separation can be at a pressure of roughly 100 kPa-a or higher. This can avoid the need for having an eductor to provide a pressure below 100 kPa-a for the permeate side of the membrane. The fuel fractions produced during the membrane separation can then be used as fuel in a dual-fuel spark ignition engine.

On-board separation process

Methods for fabricating a membrane with an organosilica material which is a polymer comprising independent units of Formula [ZZSiCH](I), wherein each Zrepresents a hydroxyl group, a C-Calkoxy group or an oxygen atom bonded to a silicon atom of another unit or an active site on the support and each Zrepresents a hydroxyl group, a C-Calkoxy group, a C-Calkyl group, an oxygen atom bonded to a silicon atom of another unit or an active site on the support are provided. Methods of removing a contaminant from a hydrocarbon stream are also provided.

Membrane fabrication methods using organosilica materials and uses thereof

In a process for separating one or more 3,3'-, 3,4&#x2032;- and 4,4&#x2032;-dimethyl biphenyl isomers, a feed comprising the isomers is contacted with a zeolite adsorbent which contains one or more metal cations in the +1 or +2 oxidation states. Separation processes for each of the 3,3&#x2032;-, 3,4&#x2032;- and 4,4&#x2032;-dimethyl biphenyl isomers is provided.

Processes for separating dimethyl biphenyl isomers using zeolite adsorbents

Asymmetric membrane structures are provided that are suitable for various types of separations, such as separations by reverse osmosis. Methods for making an asymmetric membrane structure are also provided. The membrane structure can include at least one polymer layer. Pyrolysis can be used to convert the polymer layer to a porous carbon structure with a higher ratio of carbon to hydrogen.

Reverse osmosis membranes and separations

Hydrocarbon reverse osmosis membranes and separations

A process for separating dimethyl biphenyl (DMBP) isomers, including contacting a mixture of 3,3'-DMBP, 3,4&#x2032;-DMBP and 4,4&#x2032;-DMBP in a first solvent with a 12-member ring zeolite exchanged with potassium or barium, or combinations thereof, and adsorbing the 3,3&#x2032;-DMBP onto the 12-member ring zeolite, such as by passing the mixture through at least one packed bed of the potassium and/or barium exchanged 12-member ring zeolite.

Adsorptive separation of dimethyl biphenyl regioisomers using 12-member ring zeolite sorbents

Asymmetric membrane structures are provided that are suitable for hydrocarbon reverse osmosis of small hydrocarbons. Separation of para-xylene from ortho- and meta-xylene is an example of a separation that can be performed using hydrocarbon reverse osmosis. Hydrocarbon reverse osmosis separations can be incorporated into a para-xylene isomerization and recovery system in a variety of manners.

Separation of mixed xylenes

A method is described for separating COand/or HS from a mixed gas stream by contacting the gas stream with a non-aqueous, liquid absorbent medium of a primary and/or secondary aliphatic amine, preferably in a non-aqueous, polar, aprotic solvent under conditions sufficient for sorption of at least some of the CO. The solution containing the absorbed COcan then be treated to desorb the acid gas. The method is usually operated as a continuous cyclic sorption-desorption process, with the sorption being carried out in a sorption zone where a circulating stream of the liquid absorbent contacts the gas stream to form a CO-rich sorbed solution, which is then cycled to a regeneration zone for desorption of the CO(advantageously at &#x3c;100&#xb0; C.). Upon COrelease, the regenerated lean solution can be recycled to the sorption tower. CO:(primary+secondary amine) adsorption molar ratios&#x3e;0.5:1 (approaching 1:1) may be achieved.

Non-aqueous amine scrubbing for removal of carbon dioxide

Silicalite particles, methods of making silicalite particles, systems comprising silicalite particles and methods for using silicalite particles to separate ethanol from water.

Compositions, systems and methods for separating ethanol from water and methods of making compositions for separating ethanol from water

A method is described for separating COand/or HS from a mixed gas stream by contacting the gas stream with a non-aqueous, liquid absorbent medium of a primary and/or secondary aliphatic amine, preferably in a non-aqueous, polar, aprotic solvent under conditions sufficient for sorption of at least some of the CO. The solution containing the absorbed COcan then be treated to desorb the acid gas. The method is usually operated as a continuous cyclic sorption-desorption process, with the sorption being carried out in a sorption zone where a circulating stream of the liquid absorbent contacts the gas stream to form a CO-rich sorbed solution, which is then cycled to a regeneration zone for desorption of the CO(advantageously at &#x3c;100&#xb0; C.). Upon COrelease, the regenerated lean solution can be recycled to the sorption tower. CO:(primary+secondary amine) adsorption molar ratios &#x3e;0.5:1 (approaching 1:1) may be achieved.

Disclosed herein are processes for removing water from organic solvents, such as ethanol. The processes include distillation in two columns operated at sequentially higher pressure, followed by treatment of the overhead vapor by one or two membrane separation steps.

Membrane-augmented distillation with compression and condensation to separate solvents from water

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Annandale, NJ, United States of America

Benjamin A McCool