公开(公告)号：US20210130259A1

公开(公告)日：2021-05-06

申请号：US16500249

申请日：2018-04-09

申请人： SHELL OIL COMPANY

发明人： Georgios MITKIDIS

IPC分类号： C07C2/84 ,  C07C7/144 ,  C07C7/12 ,  C07C7/00 ,  C07C7/04 ,  B01D53/14 ,  B01D53/22 ,  B01D53/047 ,  B01D3/14

摘要： The present invention relates to a process for oxidative coupling of methane (OCM), comprising the steps of: (a) contacting, in a reactor, oxygen and methane with an OCM catalyst, resulting in a reactor effluent comprising ethylene, ethane, methane, carbon dioxide and water; (b) cooling the reactor effluent to obtain a liquid stream comprising water and a gas stream comprising ethylene, ethane, methane and carbon dioxide; (c) removing carbon dioxide from at least a part of the gas stream comprising ethylene, ethane, methane and carbon dioxide resulting in a gas stream comprising ethylene, ethane and methane; (d) passing at least a part of the gas stream comprising ethylene, ethane and methane as obtained in step (c) through a membrane, preferably a membrane comprising metal cations, more preferably a membrane comprising silver (I) ions (Ag+ ions) or copper (I) ions (Cu+ ions), to obtain a stream comprising ethane and a stream comprising ethylene.

公开(公告)号：US10941350B2

公开(公告)日：2021-03-09

申请号：US16340403

申请日：2017-10-19

申请人： NOVA Chemicals (International) S.A.

发明人： Leslie Wilfred Benum ,  Michael Edward Koselek ,  Vasily Simanzhenkov ,  Hany Iskandar Farag ,  Evan Geevouy Mah

IPC分类号： C10G9/20 ,  B01J19/00 ,  B01D53/22 ,  B01D71/02 ,  C01B3/50 ,  C07C7/144 ,  C10G9/36 ,  F16L9/02 ,  B01J6/00 ,  B01D69/02 ,  B01D69/04 ,  B01D69/10 ,  B01D67/00 ,  C01B3/34 ,  C07C4/04 ,  C10G25/00

摘要： A pass or tube or a section thereof or “U” bend in a coil in a paraffin cracker having section having a pore size in the metal substrate from about 0.001 to 0.5 microns over coated with a dense metal membrane permits the permeation of one or more of H2, CH4, CO and CO2 from cracked gases moving the reaction equilibrium to the production of ethylene and reduces the load on the down-stream separation train of the steam cracker.

公开(公告)号：US20200270189A1

公开(公告)日：2020-08-27

申请号：US16282408

申请日：2019-02-22

申请人： Saudi Arabian Oil Company

发明人： Zhonglin Zhang ,  Sohel K. Shaikh ,  Veera Venkata R. Tammana ,  Raed H. Abudawoud ,  Bruce Richard Beadle ,  Hisham Tawfiq Bassam ,  Rakan Sulaiman Bilaus

IPC分类号： C07C5/27 ,  C07C7/00 ,  C07C7/12 ,  C07C7/14 ,  C07C7/144 ,  B01J19/24 ,  B01J16/00

摘要： A method for producing para-xylene (PX) includes introducing a C8 aromatic-containing composition to a xylene rerun column to separate the C8 aromatic-containing composition into a xylene-containing effluent and a heavy effluent and passing the xylene-containing effluent to a PX processing loop that includes a PX recovery unit operable to separate a PX product from the xylene-containing effluent, a membrane isomerization unit operable to convert a portion of the MX, OX, or both from the xylene-containing effluent to PX, an EB dealkylation unit operable to dealkylate EB from the xylene-containing effluent to produce benzene, toluene, and other C7− compounds, and a membrane separation unit operable to produce a permeate that is PX-rich and a retentate that is PX-lean. The permeate is passed to the PX recovery unit for recovery of PX, which the retentate is bypassed around the PX recovery unit circulated through the xylene processing loop.

公开(公告)号：US20200254393A1

公开(公告)日：2020-08-13

申请号：US16634401

申请日：2018-03-20

申请人： Dow Global Technologies LLC

发明人： Liren Xu ,  Rahul Sharma ,  Thomas Fitzgibbons ,  Mark K. Brayden ,  Marcos V. Martinez

IPC分类号： B01D67/00 ,  B01D53/22 ,  B01D71/02 ,  B01D69/08 ,  C07C7/144

摘要： A method of making a hollow fiber carbon molecular sieve is comprised of heating a hollow polymer fiber to a carbonization temperature in an atmosphere that is non-oxidizing to form a hollow fiber carbon molecular sieve, wherein during at least a portion of the heating a tensile force is applied to the hollow polymer fiber. The method may improve the separation of gases similar in size such a propylene from propane.

公开(公告)号：US20200096254A1

公开(公告)日：2020-03-26

申请号：US16582207

申请日：2019-09-25

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

发明人： Guillaume CARDON ,  Antonio TRUEBA ,  Solene VALENTIN

IPC分类号： F25J3/02 ,  B01D53/26 ,  B01D53/14 ,  B01D53/02 ,  B01D53/22 ,  C07C7/00 ,  C07C7/12 ,  C07C7/10 ,  C10L3/10 ,  C07C7/144

摘要： Process for producing biomethane from a biogas stream including methane, carbon dioxide and at least one impurity chosen from ammonia, volatile organic compounds, water, sulfur-based impurities (H2S) and siloxanes. A biogas stream is dried, the at least one impurity is at least partially removed by solidification and removal of the impurity. The methane and the carbon dioxide contained in the biogas obtained from the second step are separated so as to produce a biomethane stream and a CO2 stream.

公开(公告)号：US20200047113A1

公开(公告)日：2020-02-13

申请号：US16536307

申请日：2019-08-08

申请人： L'Air Liquide, Societe Anonyme pour I'Etude et I'Exploitation des Procedes Georges Claude

发明人： Jean-Marc CHAREYRE ,  Veronique GRABIE ,  Golo ZICK

IPC分类号： B01D53/22 ,  C07C7/00 ,  C07C7/144

摘要： A facility and method for membrane permeation treatment of a feed gas flow containing at least methane and carbon dioxide that includes a compressor, a pressure measurement device, at least one valve, and first, second, third, and fourth membrane separation units for separation of CO2 from CH4 to permeates enriched in CO2 and retentates enriched in CH4, respectively. The at least one valve adjusts the number of membranes combined and connected to the flow of gas entering into at least one of the membrane separation units as a function of the pressure recorded by the pressure measurement device.

公开(公告)号：US20200001198A1

公开(公告)日：2020-01-02

申请号：US16024236

申请日：2018-06-29

申请人： UOP LLC

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

IPC分类号： B01D3/14 ,  B01D61/36 ,  C07C7/04 ,  C07C7/144 ,  C07C9/08 ,  C07C11/06 ,  C07C11/08

摘要： Process for separating a highly pure propylene product from a liquefied petroleum gas stream is disclosed, which eliminates a C3 splitter having over 120 trays and the additional equipment that a C3 splitter requires. The process includes passing a feed stream to a dividing wall column to produce an overhead stream, a first side draw stream, a second side draw stream, and a product stream. The first side draw stream is passed to a treatment unit to produce a treated stream. The treated stream is passed to a membrane unit and a permeate stream is passed from the membrane unit to produce a polymer grade propylene stream.

公开(公告)号：US10471368B1

公开(公告)日：2019-11-12

申请号：US16023431

申请日：2018-06-29

申请人： UOP LLC

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

IPC分类号： B01D3/14 ,  B01D61/36 ,  C07C7/04 ,  C07C7/144 ,  C07C11/06 ,  C07C9/08 ,  C07C11/08 ,  C07C9/10

摘要： The present invention relates to a combined C3/C4 splitter with a membrane system. More specifically, the present invention relates to a combined C3/C4 splitter column to separate highly pure propylene product from a liquefied petroleum gas stream, which eliminates a C3 splitter having over 120 trays and the additional equipment that a C3 splitter requires.

公开(公告)号：US10434463B2

公开(公告)日：2019-10-08

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： B01D69/02 ,  B01D53/22 ,  B01D69/12 ,  B01D67/00 ,  C07C7/144 ,  B01D69/14 ,  B01D71/02 ,  B01D71/68 ,  B01D71/12 ,  B01D71/60

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

公开(公告)号：US10427997B2

公开(公告)日：2019-10-01

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： C07C7/144 ,  B01D71/64 ,  B01D71/68 ,  C07C7/00 ,  B01D53/22 ,  B01D71/82 ,  B01D71/70 ,  B01D69/14 ,  B01D69/02 ,  B01D69/12 ,  B01D63/08 ,  B01D67/00

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.