公开(公告)号：US12036516B2

公开(公告)日：2024-07-16

申请号：US17148699

申请日：2021-01-14

申请人： KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

发明人： Jungkyu Choi ,  Kwan Young Lee ,  Sung-Won Hong

IPC分类号： B01D71/02 ,  B01D67/00 ,  B01D69/10 ,  C07B63/00 ,  C07C7/14 ,  C07C7/144 ,  C07C15/08

CPC分类号： B01D71/0281 ,  B01D67/00411 ,  B01D69/107 ,  B01D69/108 ,  C07B63/00 ,  C07C7/144 ,  B01D2323/081 ,  B01D2323/2181 ,  C07C15/08

摘要： The present invention relates to a method of controlling a defect structure in an MFI zeolite membrane and a method of separating xylene isomers using the MFI zeolite membrane produced by the method, and more particularly, to a method of controlling a defect structure in an MFI zeolite membrane that improves the performance of separating a xylene isomer by reducing the amount and size of defects formed in the MFI membrane structure when removing organic-structure-directing agents in the membrane through calcination at a low temperature using ozone.

公开(公告)号：US11999692B2

公开(公告)日：2024-06-04

申请号：US18363360

申请日：2023-08-01

申请人： EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANY

发明人： Bhupender S. Minhas ,  Jeevan S. Abichandani ,  Marcus L. H. Van Nuland ,  Wai Kit Cheng ,  Chong-Jhoo Wang ,  Robert G. Tinger

IPC分类号： C07C7/00 ,  B01D61/00 ,  C07C7/144

CPC分类号： C07C7/144 ,  B01D61/007 ,  C07C7/005 ,  B01D2317/025

摘要： 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.

公开(公告)号：US11931696B2

公开(公告)日：2024-03-19

申请号：US17636528

申请日：2020-08-28

申请人： Fujifilm Manufacturing Europe B.V. ,  Fujifilm Corporation

发明人： Anton Van Der Pluijm ,  Petrus Henricus Maria Van Kessel ,  Shigehide Itoh ,  Yujiro Itami ,  Davide Bocciardo

IPC分类号： B01D53/22 ,  B01D63/10 ,  B01D69/10 ,  C07C7/144

CPC分类号： B01D63/103 ,  B01D53/228 ,  B01D69/10 ,  C07C7/144 ,  B01D2313/143 ,  B01D2313/146

摘要： A gas separation element comprising a membrane sheet and a permeate spacer, wherein the membrane sheet comprises a porous support and a discriminating layer, CHARACTERISED IN THAT:



(a) the permeate spacer has an open space volume of at least 0.0004 m3/m2; and
(b) the membrane sheet has an aspect ratio of at least 1.5.

公开(公告)号：US20230390695A1

公开(公告)日：2023-12-07

申请号：US18233122

申请日：2023-08-11

申请人： Air Liquide Advanced Technologies, U.S. LLC

发明人： Yong DING ,  Michael J. MITARITEN

IPC分类号： B01D53/22 ,  B01D53/26 ,  B01D69/12 ,  B01D71/80 ,  C07C7/144 ,  C07C7/00 ,  C10L3/10 ,  B01D69/10

CPC分类号： B01D53/226 ,  B01D53/268 ,  B01D69/12 ,  B01D53/265 ,  B01D71/80 ,  C07C7/144 ,  C07C7/005 ,  C10L3/103 ,  C10L3/104 ,  C10L3/106 ,  B01D53/228 ,  C10L3/101 ,  B01D69/10 ,  C10L3/105 ,  C10L2290/548 ,  B01D71/56

摘要： The invention relates to a process for recovering methane from digester biogas or landfill gas. More specifically, the invention pertains to a method for producing biomethane that removes impurities from a compressed digester biogas with staged membrane modules of at least two different types, to produce a biomethane having at least 94% CH4, below 3% of CO2, and below 4 ppm of H2S.

公开(公告)号：US20230338889A1

公开(公告)日：2023-10-26

申请号：US17924559

申请日：2021-05-04

申请人： L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude

发明人： Solène VALENTIN ,  François BARRAUD

IPC分类号： B01D53/22 ,  C10L3/10 ,  C07C7/144 ,  C07C7/04 ,  C07C7/00 ,  F25J3/02 ,  B01D53/00 ,  B01D53/30 ,  B01D3/14

CPC分类号： B01D53/226 ,  C10L3/104 ,  C07C7/144 ,  C07C7/04 ,  C07C7/005 ,  F25J3/0233 ,  B01D53/229 ,  B01D53/002 ,  B01D53/30 ,  B01D3/145 ,  B01D3/148 ,  C10L2290/548 ,  C10L2290/543 ,  C10L2200/0469 ,  F25J2205/40 ,  F25J2205/80 ,  F25J2210/66 ,  F25J2200/02 ,  F25J2280/50 ,  B01D2258/05 ,  B01D2257/504 ,  B01D2256/245 ,  B01D2257/304 ,  B01D2257/80 ,  B01D2257/708

摘要： Disclosed are a facility and a method using the facility for treating a feed gas stream comprising at least methane and carbon dioxide by membrane permeation, the facility comprising: —a first membrane separation unit capable of receiving the feed gas stream and providing a first permeate and a first retentate, —a second membrane separation unit capable of receiving the first retentate and providing a second permeate and a second retentate, —a compressor for compressing the first permeate to a pressure of between 17 bar and 25 bar, —a means for cooling the first compressed permeate to a temperature lower than −40° C., —a distillation column for separating the first cooled permeate into a gas stream and a liquid stream, —at least one means for recycling the gas stream exiting the distillation column to the inlet of the first membrane separation unit, —a means for measuring the concentration of methane and/or carbon dioxide in the gas stream exiting the distillation column, —a means for comparing the concentration of methane and/or carbon dioxide measured by the measurement means with a target value, and —a means for adjusting the pressure and/or the temperature of the first permeate depending on the comparison carried out by the comparison means.

公开(公告)号：US11786862B2

公开(公告)日：2023-10-17

申请号：US17108360

申请日：2020-12-01

申请人： AB IMPIANTI SRL

发明人： Federico Capra ,  Stefania Patronelli ,  Egidio Monticelli

IPC分类号： B01D53/22 ,  B01D53/047 ,  C07C7/00 ,  C07C7/12 ,  C07C7/144 ,  C10L3/10

CPC分类号： B01D53/229 ,  B01D53/0476 ,  B01D53/226 ,  C07C7/005 ,  C07C7/12 ,  C07C7/144 ,  C10L3/104 ,  B01D2256/245 ,  B01D2257/504 ,  C10L2290/542 ,  C10L2290/548

摘要： Plant and method for the separation of a gas mixture containing a plurality of gaseous components, comprising first and second membrane-based separation stages and a third gas separation stage with adsorption with oscillating pressure, the first, second and third gas separation stages acting in combination to obtain a first final flow of gas enriched in a first component of the initial gas mixture, for example methane, and a second final flow of gas, enriched in a second component of the initial gas mixture, for example carbon dioxide.

公开(公告)号：US20190193021A1

公开(公告)日：2019-06-27

申请号：US15855407

申请日：2017-12-27

申请人： UOP LLC

发明人： James E. Rekoske ,  Trung Pham ,  Stanley J. Frey ,  Chunqing Liu

IPC分类号： B01D53/22 ,  B01D69/02 ,  B01D69/12 ,  B01D71/64 ,  B01D71/82 ,  B01D71/68 ,  B01D71/70 ,  B01D63/08 ,  C07C7/144 ,  C07C7/00

CPC分类号： C07C7/144 ,  B01D53/226 ,  B01D53/227 ,  B01D53/228 ,  B01D63/08 ,  B01D67/0013 ,  B01D69/02 ,  B01D69/12 ,  B01D69/142 ,  B01D69/148 ,  B01D71/64 ,  B01D71/68 ,  B01D71/70 ,  B01D71/82 ,  B01D2256/24 ,  B01D2257/306 ,  B01D2257/553 ,  B01D2257/7022 ,  B01D2317/025 ,  B01D2319/04 ,  B01D2325/022 ,  B01D2325/20 ,  B01D2325/36 ,  C07C7/005 ,  C07C11/06 ,  C07C11/04

摘要： A membrane process is provided for separating light olefins from light paraffins to produce a polymer grade light olefin product stream that is about 99.5 mol % ethylene or propylene. The process involves multiple stages to achieve the high purity product and provides for processing hydrocarbon streams that have differing concentrations of light olefins.

公开(公告)号：US20180346833A1

公开(公告)日：2018-12-06

申请号：US16055874

申请日：2018-08-06

申请人： Kaaeid A. Lokhandwala ,  Sachin Joshi

发明人： Kaaeid A. Lokhandwala ,  Sachin Joshi

IPC分类号： C10L3/10 ,  F25J3/06 ,  C07C7/04 ,  C07C7/12 ,  C07C7/144 ,  C07C7/20 ,  C10G5/06 ,  C10G70/04 ,  C07C7/00

CPC分类号： C10L3/101 ,  C07C7/005 ,  C07C7/04 ,  C07C7/12 ,  C07C7/144 ,  C07C7/20 ,  C10G5/06 ,  C10G70/045 ,  C10G2300/1025 ,  C10G2300/1033 ,  C10L3/106 ,  C10L3/107 ,  C10L2200/0461 ,  C10L2270/04 ,  C10L2290/06 ,  C10L2290/08 ,  C10L2290/10 ,  C10L2290/46 ,  C10L2290/541 ,  C10L2290/543 ,  C10L2290/548 ,  F25J3/0635

摘要： A process and system for recovering natural gas liquids (NGL) using a combination of J-T cooling and membrane separation. The process involves compressing, separating, and cooling a flare gas stream comprising at least methane and C3+ hydrocarbons prior to being introduced to a J-T valve. The cooled stream exiting the J-T valve is further separated, producing a NGL product stream and an uncondensed gas stream. The uncondensed gas stream is directed to a membrane separation step, which results in a C3+ hydrocarbon enriched stream and a C3+ hydrocarbon depleted stream. The C3+ hydrocarbon enriched stream may be recycled back to the process to recover more NGL.

公开(公告)号：US20180272274A1

公开(公告)日：2018-09-27

申请号：US15920962

申请日：2018-03-14

申请人： Korea Research Institute of Chemical Technology

发明人： Jeong Hoon KIM ,  Su Young MOON ,  Bong Jun CHANG

IPC分类号： B01D53/22 ,  B01D71/02 ,  B01D69/12 ,  B01D71/68 ,  B01D71/60 ,  B01D67/00 ,  B01D71/12 ,  C07C7/144

CPC分类号： B01D53/228 ,  B01D67/0079 ,  B01D67/0088 ,  B01D69/02 ,  B01D69/12 ,  B01D69/148 ,  B01D71/022 ,  B01D71/12 ,  B01D71/60 ,  B01D71/68 ,  B01D2256/24 ,  B01D2257/7022 ,  B01D2323/30 ,  B01D2325/14 ,  B01D2325/16 ,  C07C7/144 ,  C07C9/06 ,  C07C11/04 ,  C07C11/06 ,  C07C9/08 ,  C07C11/08 ,  C07C9/10

摘要： A separation membrane for olefin separation and olefin separation method using the same are provided.

公开(公告)号：US10017434B2

公开(公告)日：2018-07-10

申请号：US15271686

申请日：2016-09-21

申请人： Membrane Technology and Research, Inc.

发明人： Nicholas P Wynn ,  Alvin Ng ,  Douglas Gottschlich ,  Paul Su ,  Meijuan Zhou ,  Sylvie Thomas-Droz

IPC分类号： B01D53/22 ,  B01D53/00 ,  C07C7/00 ,  C07C7/144 ,  F25J3/02 ,  C01B3/50

CPC分类号： C07C7/005 ,  B01D53/002 ,  B01D53/22 ,  B01D53/226 ,  C01B3/501 ,  C01B2203/0266 ,  C01B2203/041 ,  C01B2203/043 ,  C01B2203/147 ,  C01B2203/148 ,  C07C7/144 ,  F25J3/0271 ,  F25J2205/80 ,  F25J2270/90 ,  C07C11/06 ,  C07C11/09

摘要： Gas separation processes are provided for separating dehydrogenation reaction products from a raw gas stream to recover hydrocarbons, specifically olefins, such as propylene and iso-butene, as well as unreacted feedstock. The processes employ a sequence of partial condensation steps, interspersed with membrane separation steps to raise the hydrocarbon dewpoint of the uncondensed gas, thereby avoiding the use of low-temperature or cryogenic conditions.