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公开(公告)号：US11211621B2
公开(公告)日：2021-12-28
申请号：US16695335
申请日：2019-11-26
Inventor： Timothy A. Barckholtz , Jonathan Rosen , Carla S. Pereira , Rodrigo F. Blanco Gutierrez , Frank Hershkowitz , Carl A. Willman , Timothy C. Geary
IPC: H01M8/04537 , H01M8/0438 , H01M8/14
Abstract: Systems and methods are provided for operating molten carbonate fuel cells to allow for periodic regeneration of the fuel cells while performing elevated CO2 capture. In some aspects, periodic regeneration can be achieved by shifting the location within the fuel cells where the highest density of alternative ion transport is occurring. Such a shift can result in a new location having a highest density of alternative ion transport, while the previous location can primarily transport carbonate ions. Additionally or alternately, periodic regeneration can be performed by modifying the input flows to the fuel cell and/or relaxing the operating conditions of the fuel cell to reduce or minimize the amount of alternative ion transport.
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2.发明申请公开(公告)号：US20170348630A1
公开(公告)日：2017-12-07
申请号：US15169835
申请日：2016-06-01
Applicant: ExxonMobil Research and Engineering Company
Inventor： Carla S. Pereira , Michael Siskin , Himanshu Gupta
CPC classification number: B01D53/1406 , B01D53/1425 , B01D53/1468 , B01D53/1493 , B01D53/18 , B01D2252/204 , B01D2252/20405 , B01D2252/20478 , B01D2252/20484 , B01D2257/304 , C10L3/103 , C10L2290/12 , C10L2290/542 , C10L2290/545
Abstract: A system and process for selectively separating H2S from a gas mixture which also comprises CO2 is disclosed. A water recycle stream is fed to the absorber in order to create a higher concentration absorbent above the recycle feed and having a greater H2S selectivity at lower acid gas loadings, and a more dilute absorbent below the recycle feed and having a greater H2S selectivity at higher acid gas loadings. Also disclosed is a system and process for selectively separating H2S by utilizing two different absorbents, one absorbent for the upper section of the absorber, tailored to have a greater H2S selectivity at lower acid gas loadings, and a second absorbent for the lower section of the absorber, tailored to have a greater H2S selectivity at higher acid gas loadings.
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3.发明授权公开(公告)号：US11185813B2
公开(公告)日：2021-11-30
申请号：US15955182
申请日：2018-04-17
Applicant: ExxonMobil Research and Engineering Company , BASF
Inventor： Carla S. Pereira , Michael Siskin , Thomas Ingram , Gerald Vorberg , Martin Ernst
Abstract: A process for selectively separating H2S from a gas mixture which also comprises CO2 is disclosed. A stream of the gas mixture is contacted with an absorbent solution comprising one or more amines, alkanolamines, hindered alkanolamines, capped alkanolamines, or mixtures thereof. The H2S/CO2 selectivity of the absorbent solution is preferably greater than about 4.0 for an acid gas loading [mol(CO2+H2S)/mol(amine)] between about 0.2 and about 0.6, and is achieved by reducing pH of the absorbent solution.
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4.发明授权公开(公告)号：US09962644B2
公开(公告)日：2018-05-08
申请号：US14980634
申请日：2015-12-28
Applicant: ExxonMobil Research and Engineering Company , BASF
Inventor： Carla S. Pereira , Michael Siskin , Thomas Ingram , Gerald Vorberg , Martin Ernst
CPC classification number: B01D53/1493 , B01D53/1425 , B01D53/1468 , B01D53/18 , B01D2252/204 , B01D2252/20431 , B01D2252/20478 , B01D2252/20489 , B01D2257/304 , B01D2257/504 , C10L3/10 , C10L3/103 , C10L2290/542
Abstract: A process for selectively separating H2S from a gas mixture which also comprises CO2 is disclosed. A stream of the gas mixture is contacted with an absorbent solution comprising one or more amines, alkanolamines, hindered alkanolamines, capped alkanolamines, or mixtures thereof. The H2S/CO2 selectivity of the absorbent solution is preferably greater than about 4.0 for an acid gas loading [mol(CO2+H2S)/mol(amine)] between about 0.2 and about 0.6, and is achieved by reducing pH of the absorbent solution.
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5.发明申请公开(公告)号：US20170182455A1
公开(公告)日：2017-06-29
申请号：US14980634
申请日：2015-12-28
Applicant: ExxonMobil Research and Engineering Company , BASF
Inventor： Carla S. Pereira , Michael Siskin , Thomas Ingram , Gerald Vorberg , Martin Ernst
CPC classification number: B01D53/1493 , B01D53/1425 , B01D53/1468 , B01D53/18 , B01D2252/204 , B01D2252/20431 , B01D2252/20478 , B01D2252/20489 , B01D2257/304 , B01D2257/504 , C10L3/10 , C10L3/103 , C10L2290/542
Abstract: A process for selectively separating H2S from a gas mixture which also comprises CO2 is disclosed. A stream of the gas mixture is contacted with an absorbent solution comprising one or more amines, alkanolamines, hindered alkanolamines, capped alkanolamines, or mixtures thereof. The H2S/CO2 selectivity of the absorbent solution is preferably greater than about 4.0 for an acid gas loading [mol(CO2+H2S)/mol(amine)] between about 0.2 and about 0.6, and is achieved by reducing pH of the absorbent solution.
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Patent Agency Ranking
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
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.
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公开(公告)号：US10550050B2
公开(公告)日：2020-02-04
申请号：US15886199
申请日：2018-02-01
Applicant: ExxonMobil Research and Engineering Company
Inventor： Changyub Paek , Michael P. Lanci , Randall D. Partridge , Allen W. Burton , Carla S. Pereira , Benjamin A. McCool
IPC: C07C2/74 , C07C15/14 , C07C7/13 , B01J20/28 , B01J20/18 , B01D15/08 , C07C2/66 , C07C5/10 , C07C5/27 , C07C5/367
Abstract: In a process for separating one or more 3,3′-, 3,4′- and 4,4′-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′-, 3,4′- and 4,4′-dimethyl biphenyl isomers is provided.
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8.发明授权公开(公告)号：US10322979B2
公开(公告)日：2019-06-18
申请号：US15886115
申请日：2018-02-01
Applicant: ExxonMobil Research and Engineering Company
Inventor： Benjamin A. McCool , Michael P. Lanci , Randall D. Partridge , Carla S. Pereira
IPC: C07C2/74 , B01D15/08 , C07C2/66 , C07C7/13 , C07C15/14 , B01J20/28 , B01J20/18 , C07C5/10 , C07C5/27 , C07C5/367
Abstract: A process for separating dimethyl biphenyl (DMBP) isomers, including contacting a mixture of 3,3′-DMBP, 3,4′-DMBP and 4,4′-DMBP in a first solvent with a 12-member ring zeolite exchanged with potassium or barium, or combinations thereof, and adsorbing the 3,3′-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.
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9.发明申请公开(公告)号：US20220126235A1
公开(公告)日：2022-04-28
申请号：US17537654
申请日：2021-11-30
Applicant: ExxonMobil Research and Engineering Company , BASF
Inventor： Carla S. Pereira , Michael Siskin , Thomas Ingram , Gerald Vorberg , Martin Ernst
Abstract: A process for selectively separating H2S from a gas mixture which also comprises CO2is disclosed. A stream of the gas mixture is contacted with an absorbent solution comprising one or more amines, alkanolamines, hindered alkanolamines, capped alkanolamines, or mixtures thereof. The H2S/CO2 selectivity of the absorbent solution is preferably greater than about 4.0 for an acid gas loading [mol(CO2+H2S)/mol(amine)] between about 0.2 and about 0.6, and is achieved by reducing pH of the absorbent solution.
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公开(公告)号：US20200176800A1
公开(公告)日：2020-06-04
申请号：US16696821
申请日：2019-11-26
Inventor： Everett J. O'Neal , Lu Han , Carla S. Pereira , Rodrigo F. Blanco Gutierrez , Timothy M. Healy , Carl A. Willman , Hossein Ghezel-Ayagh , Frank J. Dobek, JR.
IPC: H01M8/14 , H01M8/0612
Abstract: A reforming element for a molten carbonate fuel cell stack and corresponding methods are provided that can reduce or minimize temperature differences within the fuel cell stack when operating the fuel cell stack with enhanced CO2 utilization. The reforming element can include at least one surface with a reforming catalyst deposited on the surface. A difference between the minimum and maximum reforming catalyst density and/or activity on a first portion of the at least one surface can be 20% to 75%, with the highest catalyst densities and/or activities being in proximity to the side of the fuel cell stack corresponding to at least one of the anode inlet and the cathode inlet.
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