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公开(公告)号：US11827613B2
公开(公告)日：2023-11-28
申请号：US17597887
申请日：2020-07-02
Applicant: ExxonMobil Technology Engineering Company
Inventor： Kun Wang , Timothy D. Shaffer
IPC: C07D305/12
CPC classification number: C07D305/12
Abstract: A method may include: oxidizing iso-butane with oxygen to produce t-butyl hydroperoxide and t-butyl alcohol; dehydrating at least a portion of the t-butyl alcohol to produce di-tert-butyl ether and isobutylene; epoxidizing at least a portion of the isobutylene with the t-butyl hydroperoxide to produce isobutylene oxide and t-butyl alcohol; and carbonylating at least a portion of the isobutylene oxide with carbon monoxide to produce pivalolactone.
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公开(公告)号：US11827579B2
公开(公告)日：2023-11-28
申请号：US17431745
申请日：2020-03-18
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Seth M. Washburn , Hsu Chiang , Umar Aslam , Wenyih F. Lai , Doron Levin , Tan-Jen Chen
CPC classification number: C07C2/865 , B01J29/70 , B01J29/7088 , C07C2/864 , B01D2255/204 , B01D2255/206 , B01D2255/2061 , B01D2255/2063 , B01D2255/2065 , B01J2523/20 , B01J2523/30 , B01J2523/37 , B01J2523/3706 , B01J2523/3712 , C07C2529/70
Abstract: This disclosure provides improved processes for converting benzene/toluene via methylation with methanol/dimethyl ether for producing, e.g., p-xylene. In an embodiment, a process utilizes a methylation catalyst system comprising a molecular sieve catalyst and an auxiliary catalyst. The auxiliary catalyst comprises a metal element selected from Group 2, Group 3, the lanthanide series, the actinide series, and mixtures and combinations thereof. The auxiliary catalyst may comprise the oxide of the metal element. Deactivation of the molecular sieve catalyst can be reduced with the inclusion of the auxiliary catalyst in the methylation catalyst system.
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公开(公告)号：US20230356140A1
公开(公告)日：2023-11-09
申请号：US18040316
申请日：2021-07-30
Inventor： Joseph Renaldo VELLA , Bennett D. MARSHALL , Chien-Chiang CHEN
CPC classification number: B01D53/0462 , B01D53/0446 , C10L3/104 , C10L3/106 , B01D2257/504 , B01D2257/80 , B01D2256/245 , B01D2259/402 , B01D2259/4061 , B01D2259/4062 , B01D2253/108 , B01D2253/204
Abstract: Provided are apparatus and systems for performing a swing adsorption process. In particular, the method and system involves swing adsorption processes and systems designed to lessen the temperature, pressure and product stream composition fluctuations in the adsorption step of a swing adsorption process, particularly involving preparation of the adsorption bed unit using feed stream cooling in conjunction with splitting the cooled feed stream to the adsorption bed units during adsorption steps while staggering the timing of back-to-back adsorption steps in the swing adsorption process. The process may be utilized for swing adsorption processes, such as rapid cycle TSA and/or rapid cycle PSA, which are utilized to remove one or more contaminants from a gaseous feed stream.
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公开(公告)号：US11808411B2
公开(公告)日：2023-11-07
申请号：US16917038
申请日：2020-06-30
Inventor： Donghwan Lee , Sathish Balasubramanian
CPC classification number: F17C7/04 , F04B15/08 , F17C6/00 , B63B25/16 , B63B2025/087 , F17C2223/0161
Abstract: An apparatus and method of storing and transporting, in a dual-use cryogenic storage tank, a cryogenic liquid having a liquefaction temperature. A first pump empties the tank of a first portion of the cryogenic liquid, thereby leaving a second portion of the cryogenic liquid in the cryogenic storage tank. A second portion of the cryogenic liquid is focused at a location on a bottom of the cryogenic storage tank. Using a second pump located at the location, the cryogenic storage tank is emptied of the second portion of the cryogenic liquid, whereby a residual portion of the cryogenic liquid is left therein. Using a focused heating structure, heat may be delivered to the location to raise the temperature of the residual portion above the liquefaction temperature, thereby vaporizing all of the residual portion.
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195.发明授权公开(公告)号：US11795783B2
公开(公告)日：2023-10-24
申请号：US16863123
申请日：2020-04-30
Inventor： David J. Schmidt , Krishnan Kumaran , Donald Allen Burnett
CPC classification number: E21B41/00 , G01V1/288 , G01V1/40 , E21B43/123
Abstract: A method of identifying hydrocarbon production information is disclosed. In in a first hydrocarbon management environment, a first audio signal is detected and a characteristic acoustic fingerprint is identified therefrom. The fingerprint is stored in a memory, along with identifying information associated with the first signal. A second audio signal is detected and a characteristic acoustic fingerprint is identified therefrom. The fingerprints are compared, and if the fingerprints match the identifying information of the first audio signal is assigned to the second audio signal. A notification regarding the matching of the characteristic acoustic fingerprints of the first and second audio signals is issued.
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Patent Agency Ranking
公开(公告)号：US11781159B2
公开(公告)日：2023-10-10
申请号：US17068147
申请日：2020-10-12
Inventor： Xiaozhou Zhang , Zarath M Summers , Partha Nandi , Mark P Hagemeister , Jihad M Dakka , Mohor Chatterjee , Vera Grankina
IPC: C12P7/42 , C07C51/377 , C12P19/02 , C12P19/14 , C13K1/00 , C12N1/16 , C07C51/367 , C07C59/01
CPC classification number: C12P7/42 , C07C51/377 , C12P19/02 , C12P19/14 , C13K1/00
Abstract: Hydroxycarboxylic acids may be biosynthesized from a carbonaceous feedstock and then isolated through forming and subsequently hydrolyzing an intermediate sophorolipid. After biosynthesizing a hydroxycarboxylic acid in a cell culture medium or otherwise providing a hydroxycarboxylic acid in a first aqueous medium, the hydroxycarboxylic acid and glucose may be converted into at least one sophorolipid by a suitable microorganism or an enzyme cocktail. The at least one sophorolipid may be then be separated from the cell culture medium or first aqueous medium and then hydrolyzed in a second aqueous medium to form the hydroxycarboxylic acid and glucose as free components separate from the cell culture medium or first aqueous medium. The hydroxycarboxylic acid is present as a phase separate from the second aqueous medium and the glucose remains in the second aqueous medium.
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公开(公告)号：US11773335B2
公开(公告)日：2023-10-03
申请号：US17643044
申请日：2021-12-07
Inventor： Brian M. Weiss , Sophie Liu , Michael R. Harper, Jr. , Herbert W. Barry , Changmin Chun , Barrington S. Goldson , Justin R. Johnson , Faria Nusrat
CPC classification number: C10G11/182 , C10G11/12 , C10G2300/703
Abstract: Systems and methods are provided for using a reverse flow reactor (or another reactor with flows in opposing directions at different parts of a process cycle) for pyrolysis of hydrocarbons. The systems and methods can include a reactor that includes a combustion catalyst to initiate and/or maintain combustion within the reactor in a controlled manner during the heating and/or regeneration portion(s) of the reaction cycle. A fuel can also be used that has a greater resistance to auto-combustion, such as a fuel that is composed primarily of methane and/or other hydrocarbons. During operation, the temperature in at least an initial portion of the reactor can be maintained at a temperature so that auto-ignition of the auto-combustion resistant fuel injected during the heating step(s) is reduced or minimized. This can allow combustion to be initiated when the auto-combustion resistant fuel comes into contact with the catalyst. Additionally, the amount and positioning of the catalyst within the reactor can be controlled so that combustion of the fuel takes place over a substantially longer period of time than combustion during a conventional reactor heating step. Because the fuel is moving within the reactor during combustion, extending the combustion time results in a substantial expansion of the volume where combustion occurs. Optionally in combination with an improved reaction cycle, this can expand the portion of the reactor that is directly heated by combustion, allowing for an improved temperature distribution within the reactor during the pyrolysis step.
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198.发明公开公开(公告)号：US20230304396A1
公开(公告)日：2023-09-28
申请号：US18175763
申请日：2023-02-28
Inventor： Kelvin I. AMALOKWU , Brian R. CRAWFORD , Shreerang S. CHHATRE
Abstract: Systems and methods described herein provide for the estimation of the maximum reservoir pressure at which fluid can be injected into a reservoir before causing conductivity increase due to fracture/fault reactivation. An exemplary method includes computing the maximum reservoir pressure for the location of interest prior to fracture/fault reactivation at a given depleted reservoir pressure based on a computed probability of non-exceedance for a field or laboratory estimate of the maximum reservoir pressure prior to fracture/fault reactivation and a computed pressure distribution including a range of potential maximum reservoir pressures for the location of interest prior to fracture/fault reactivation at the given depleted reservoir pressure. The method also includes outputting the computed maximum reservoir pressure as the estimated maximum reservoir pressure for performing a fluid injection operation for the location of interest.
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公开(公告)号：US11760706B2
公开(公告)日：2023-09-19
申请号：US17634956
申请日：2020-07-02
Inventor： Bhupender S. Minhas , Jeevan S. Abichandani , Marcus L. H. van Nuland , Wai Kit Cheng , Chong-Jhoo Wang , Robert G. Tinger
CPC classification number: C07C7/144 , B01D61/007 , C07C7/005 , B01D2317/025
Abstract: Selective removal of non-aromatic hydrocarbons from a xylene isomerization process for para-xylene production is accomplished using a membrane unit positioned within a xylene recovery loop. The membrane unit may include a one-stage or multi-stage (e.g., two-stage) membrane system and may be configured to separate a membrane unit product stream from a non-aromatics rich stream, which can be removed from the xylene recovery loop. The membrane unit may have a xylene permeance of about 60 gm/m2/hr/psi and a xylene to non-aromatic permeance ratio of about 15.
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公开(公告)号：US11755795B2
公开(公告)日：2023-09-12
申请号：US16133983
申请日：2018-09-18
Inventor： Feng Xiao , Neeraj R. Dani , Ted A. Long , Justin A. Gantt , Zachary H. Borden , Amr El-Bakry , Curtis J. Holub
IPC: G06F30/28 , E21B47/10 , E21B43/12 , G06F30/20 , E21B47/07 , E21B47/008 , E21B41/00 , E21B47/06 , G06F111/10
CPC classification number: G06F30/28 , E21B41/00 , E21B43/122 , E21B47/008 , E21B47/07 , E21B47/10 , G06F30/20 , E21B47/06 , G06F2111/10
Abstract: A method of detecting and mitigating flow instabilities, such as slugging, in hydrocarbon production wells. Real-time production data pertaining to each well is are retrieved. Using the production data, patterns of flow instability are identified therein. A numerical model of transient and thermal multiphase flow in each well is generated. Well test data is are retrieved from a database. The numerical model is calibrated using the well test data. Using the calibrated numerical model, a parametric study is performed to determine how input parameters affect at least one of stability and performance of the wells. Results of the parametric study are queried to determine a type of flow instability and to determine operating conditions to improve performance of the wells. An advisory is provided to a user to change operating conditions of one or more of the wells, to improve stability and/or performance of one or more of the wells.
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