公开(公告)号：US10900423B2

公开(公告)日：2021-01-26

申请号：US16173111

申请日：2018-10-29

Applicant: ExxonMobil Research and Engineering Company

Inventor： Randall D. Partridge ,  Benjamin A. McCool ,  Dhaval A. Bhandari

IPC: F02D19/06 ,  F02D41/38 ,  B01D61/02 ,  B01D61/00 ,  B01D69/12 ,  F02D19/12 ,  F02B17/00 ,  F02D41/30 ,  B01D71/02

Abstract: 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.

公开(公告)号：US11186788B2

公开(公告)日：2021-11-30

申请号：US16448117

申请日：2019-06-21

Applicant: ExxonMobil Research and Engineering Company

Inventor： Benjamin A. McCool ,  Yogesh V. Joshi ,  Dhaval A. Bhandari ,  Roberto Garcia ,  Randall D. Partridge

IPC: C10G73/02 ,  B01D3/14 ,  B01D61/58 ,  B01D69/02 ,  B01D69/14 ,  C10G73/06

Abstract: 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.

公开(公告)号：US20200325406A1

公开(公告)日：2020-10-15

申请号：US16839344

申请日：2020-04-03

Applicant: ExxonMobil Research and Engineering Company

Inventor： Randall D. Partridge ,  Benjamin A. McCool ,  Carla S. Pereira ,  Dhaval A. Bhandari

IPC: C10G67/14 ,  C10G65/12 ,  C10G65/04 ,  B01J19/24 ,  B01J10/00 ,  B01D15/18 ,  B01D61/14

Abstract: 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.

公开(公告)号：US20190390129A1

公开(公告)日：2019-12-26

申请号：US16448195

申请日：2019-06-21

Applicant: ExxonMobil Research and Engineering Company

Inventor： Benjamin A. McCool ,  Jason T. Calla ,  Dhaval A. Bhandari ,  Yogesh V. Joshi

IPC: C10M101/02 ,  B01D61/36 ,  B01D67/00 ,  C10G31/09

Abstract: Methods and apparatuses are provided for producing base stocks by using a separation process that includes: conducting a hydrocarbon feedstream to a membrane separation zone wherein the feedstream contacts a first side of at least one membrane element; retrieving at least one retentate product stream from the first side of the membrane element; retrieving at least one permeate product stream from a second side of the membrane element; and converting at least a portion of the permeate product stream into the base stock. Also provided are base stocks produced by the separation process.

公开(公告)号：US20190136786A1

公开(公告)日：2019-05-09

申请号：US16173111

申请日：2018-10-29

Applicant: ExxonMobil Research and Engineering Company

Inventor： Randall D. Partridge ,  Benjamin A. McCool ,  Dhaval A. Bhandari

IPC: F02D41/38 ,  B01D61/02

Abstract: 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.

公开(公告)号：US20190055178A1

公开(公告)日：2019-02-21

申请号：US16101790

申请日：2018-08-13

Applicant: ExxonMobil Research and Engineering Company

Inventor： Brian M. Weiss ,  ChangMin Chun ,  Dhaval A. Bhandari ,  Federico Barrai ,  Sophie Liu

IPC: C07C5/48

Abstract: This disclosure relates to processes, compositions, and systems useful for the oxydehydrogenation of alkanes to form olefins (e.g., for the conversion of ethane to ethylene). The processes use an oxygen transfer agent and may be carried out in any suitable reactor, including a reverse flow reactor, a circulating fluid bed reactor, or a cyclic co-flow reactor.

公开(公告)号：US11084985B2

公开(公告)日：2021-08-10

申请号：US16423736

申请日：2019-05-28

Applicant: ExxonMobil Research and Engineering Company

Inventor： Benjamin A. McCool ,  Dhaval A. Bhandari ,  Yogesh V. Joshi

IPC: C10G31/00 ,  C10G31/09 ,  C10G53/02 ,  C10G70/04 ,  B01D61/02 ,  B01D61/14 ,  B01D61/36 ,  B01D61/58 ,  B01D69/02 ,  C10G31/11

Abstract: 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.

公开(公告)号：US10662130B2

公开(公告)日：2020-05-26

申请号：US16101790

申请日：2018-08-13

Applicant: ExxonMobil Research and Engineering Company

Inventor： Brian M. Weiss ,  ChangMin Chun ,  Dhaval A. Bhandari ,  Federico Barrai ,  Sophie Liu

IPC: C07C5/48

Abstract: This disclosure relates to processes, compositions, and systems useful for the oxydehydrogenation of alkanes to form olefins (e.g., for the conversion of ethane to ethylene). The processes use an oxygen transfer agent and may be carried out in any suitable reactor, including a reverse flow reactor, a circulating fluid bed reactor, or a cyclic co-flow reactor.

公开(公告)号：US20190390126A1

公开(公告)日：2019-12-26

申请号：US16448117

申请日：2019-06-21

Applicant: ExxonMobil Research and Engineering Company

Inventor： Benjamin A. McCool ,  Yogesh V. Joshi ,  Dhaval A. Bhandari ,  Roberto Garcia ,  Randall D. Partridge

IPC: C10G73/02 ,  B01D69/02 ,  B01D69/14 ,  B01D61/58 ,  B01D3/14 ,  C10G73/06

Abstract: 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.