公开(公告)号：US20220134292A1

公开(公告)日：2022-05-05

申请号：US17389032

申请日：2021-07-29

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Xueliang Dong ,  Chaoyi Ba

IPC: B01D69/12 ,  H01M50/449 ,  H01M8/18 ,  H01M50/491 ,  H01M50/497 ,  H01M50/414 ,  B01D69/10 ,  B01D71/08 ,  B01D71/38

Abstract: An ionically conductive thin film composite (TFC) membrane is described. The low cost, high performance TFC membrane comprises a micropous support membrane, and a hydrophilic ionomeric polymer coating layer on a surface of the microporous support membrane. The hydrophilic ionomeric polymer coating layer is ionically conductive. The ionomeric polymer can also be present in the micropores of the support membrane. Methods of making the membrane and redox flow battery system incorporating the TFC membrane are also described.

公开(公告)号：US20210039052A1

公开(公告)日：2021-02-11

申请号：US16533297

申请日：2019-08-06

Applicant: UOP LLC

Inventor： Xueliang Dong ,  Chunqing Liu ,  Howie Tran

IPC: B01D69/12 ,  B01D71/80 ,  B01D71/56 ,  B01D71/52 ,  B01D69/10 ,  B01D69/02 ,  B01D53/22 ,  C10L3/10

Abstract: A thin film composite gas separation membrane comprising a polyether block amide copolymer coating layer and a nanoporous asymmetric support membrane with nanopores on the skin layer surface of the support membrane and gelatin polymers inside the nanopores on the skin layer surface of the support membrane. A method for making the thin film composite gas separation membrane is provided as well as the use of the membrane for a variety of separations such as separations of hydrogen sulfide and carbon dioxide from natural gas, carbon dioxide removal from flue gas, fuel gas conditioning, hydrogen/methane, polar molecules, and ammonia mixtures with methane, nitrogen or hydrogen and other light gases separations, but also for natural gas liquids recovery and hydrogen sulfide and carbon dioxide removal from natural gas in a single step.

公开(公告)号：US10646832B2

公开(公告)日：2020-05-12

申请号：US15796721

申请日：2017-10-27

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Sudipto Chakraborty ,  Nicole Karns

IPC: B01D71/64 ,  B01D53/22 ,  B01D71/68 ,  B01D69/02 ,  B01D71/76 ,  B01D67/00 ,  C08G73/10 ,  B01D61/36 ,  C02F1/44 ,  C08L79/08 ,  C10G31/00 ,  C10L1/06 ,  C10L1/08 ,  C02F101/30

Abstract: The present invention discloses high selectivity copolyimide membranes for gas, vapor, and liquid separations. Gas permeation tests on these copolyimide membranes demonstrated that they not only showed high selectivity for CO2/CH4 separation, but also showed extremely high selectivities for H2/CH4 and He/CH4 separations. These copolyimide membranes can be used for a wide range of gas, vapor, and liquid separations such as separations of CO2/CH4, He/CH4, CO2/N2, olefin/paraffin separations (e.g. propylene/propane separation), H2/CH4, He/CH4, O2/N2, iso/normal paraffins, polar molecules such as H2O, H2S, and NH3 mixtures with CH4, N2, H2. The high selectivity copolyimide membranes have UV cross-linkable sulfonyl functional groups and can be used for the preparation of UV cross-linked high selectivity copolyimide membranes with enhanced selectivities. The invention also includes blend polymer membranes comprising the high selectivity copolyimide and polyethersulfone. The blend polymer membranes comprising the high selectivity copolyimide and polyethersulfone can be further UV cross-linked under UV radiation.

公开(公告)号：US10472306B1

公开(公告)日：2019-11-12

申请号：US16023863

申请日：2018-06-29

Applicant: UOP LLC

Inventor： Stanley J. Frey ,  Chunqing Liu ,  Trung Pham

IPC: C07C7/04 ,  B01D3/14 ,  B01D3/32 ,  B01D3/42 ,  B01D69/10 ,  C07C11/06

Abstract: 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：US10471381B2

公开(公告)日：2019-11-12

申请号：US15598168

申请日：2017-05-17

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Carl W. Liskey ,  Howie Q. Tran ,  Nicole K. Karns

IPC: B01D69/10 ,  B01D69/12 ,  B01D53/22 ,  B01D67/00 ,  B01D71/08 ,  B01D71/68 ,  C07C7/144 ,  B01D69/14

Abstract: This invention provides a new facilitated transport membrane comprising a relatively hydrophilic, very small pore, nanoporous support membrane, a hydrophilic polymer inside the very small nanopores on the skin layer surface of the support membrane, a thin, nonporous, hydrophilic polymer layer coated on the surface of the support membrane, and metal salts incorporated in the hydrophilic polymer layer coated on the surface of the support membrane and the hydrophilic polymer inside the very small nanopores, a method of making this membrane, and the use of this membrane for olefin/paraffin separations, particularly for C3=/C3 and C2=/C2 separations.

公开(公告)号：US20190255490A1

公开(公告)日：2019-08-22

申请号：US16402997

申请日：2019-05-03

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Nicole K. Karns

IPC: B01D71/64 ,  B01D71/82 ,  B01D67/00 ,  B01D53/22 ,  C07C7/144 ,  B01D69/12 ,  B01D69/06 ,  B01D71/02 ,  B01D69/08

Abstract: A high performance facilitated transport membrane comprising a metal cation exchanged/chelated carboxylic acid functional group containing functional polyimide, a method of making this a membrane, and the use of this membrane for olefin/paraffin separations, particularly for propylene/propane and ethylene/ethane separations. The facilitated transport membrane has either an asymmetric integrally skinned membrane structure or a thin film composite membrane structure, wherein the top selective layer of the membrane comprises a metal cation exchanged/chelated carboxylic acid functional group containing functional polyimide.

公开(公告)号：US10322382B2

公开(公告)日：2019-06-18

申请号：US15610305

申请日：2017-05-31

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Nicole K. Karns

IPC: B01D71/64 ,  B01D67/00 ,  B01D69/06 ,  B01D69/08 ,  B01D69/12 ,  B01D71/02 ,  C07C7/144 ,  B01D53/22 ,  B01D71/82

Abstract: A high performance facilitated transport membrane comprising a metal cation exchanged/chelated carboxylic acid functional group containing functional polyimide, a method of making this a membrane, and the use of this membrane for olefin/paraffin separations, particularly for propylene/propane and ethylene/ethane separations. The facilitated transport membrane has either an asymmetric integrally skinned membrane structure or a thin film composite membrane structure, wherein the top selective layer of the membrane comprises a metal cation exchanged/chelated carboxylic acid functional group containing functional polyimide.

公开(公告)号：US20190100479A1

公开(公告)日：2019-04-04

申请号：US16058784

申请日：2018-08-08

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Lubo Zhou ,  Stanley J. Frey ,  Gregory R. Werba ,  Carl W. Liskey ,  Simon E. Albo ,  Trung Pham

IPC: C07C7/00 ,  B01D3/14 ,  B01D3/00 ,  B01D53/22 ,  B01D71/06 ,  B01D69/14 ,  C07C7/04 ,  C07C7/144

Abstract: A process is provided for separation of light olefins and paraffins and particular for the separation of propylene and propane comprising sending at least one olefin/paraffin stream to a distillation column and a membrane unit to produce an olefin stream comprising at least 92 mol % olefin. In an embodiment of the invention where the membrane unit is placed downstream from the column which can produce propylene streams at polymer grade of over 99.5 mol % propylene.

公开(公告)号：US20180133661A1

公开(公告)日：2018-05-17

申请号：US15685996

申请日：2017-08-24

Applicant: UOP LLC

Inventor： Chunqing Liu ,  Nicole K. Karns ,  Deng-Yang Jan

IPC: B01D71/70 ,  B01D71/02 ,  B01D71/18 ,  B01D71/64 ,  B01D71/68

CPC classification number: B01D71/70 ,  B01D53/228 ,  B01D67/0009 ,  B01D69/02 ,  B01D69/06 ,  B01D69/08 ,  B01D69/10 ,  B01D69/125 ,  B01D69/148 ,  B01D71/027 ,  B01D71/18 ,  B01D71/64 ,  B01D71/68 ,  B01D2256/24 ,  B01D2257/102 ,  B01D2257/108 ,  B01D2257/504 ,  B01D2323/08 ,  B01D2323/30 ,  B01D2325/20

Abstract: A novel high flux, cross-linked, fumed silica reinforced polyorganosiloxane thin film composite (TFC) membrane comprising a selective layer of a high flux, cross-linked, fumed silica reinforced polyorganosiloxane polymer supported by a porous support membrane formed from a glassy polymer has been developed. The novel high flux, cross-linked, fumed silica reinforced polyorganosiloxane thin film composite (TFC) membrane may be used to separate at least one component from another.

公开(公告)号：US20180043298A1

公开(公告)日：2018-02-15

申请号：US15796703

申请日：2017-10-27

Applicant: UOP LLC

Inventor： Carl Liskey ,  Chunqing Liu ,  Michael Hamoy ,  Nicole Karns ,  Howie Tran ,  David W. Greer

IPC: B01D53/22 ,  B01D67/00 ,  B01D69/12 ,  B01D71/32 ,  B01D69/10

CPC classification number: B01D53/228 ,  B01D53/22 ,  B01D67/0088 ,  B01D69/10 ,  B01D69/12 ,  B01D71/32 ,  B01D2256/10 ,  B01D2256/18 ,  B01D2256/24 ,  B01D2257/108 ,  B01D2257/504 ,  Y02C10/10

Abstract: The invention discloses dual layer-coated membranes and methods for making and using these membranes. The dual layer-coated membranes have a relatively porous and substantial void-containing selective asymmetric membrane support, a first coating layer comprising a hydrogel, and a second coating layer comprising a hydrophobic fluoropolymer. The membrane support has low selectivity and high permeance. The dual layer coating improves the selectivity of the membrane support and maintains the membrane performance with time. The dual layer-coated membranes are suitable for a variety of liquid, gas, and vapor separations such as water purification, non-aqueous liquid separation such as deep desulfurization of gasoline and diesel fuels, ethanol/water separations, pervaporation dehydration of aqueous/organic mixtures, fuel gas conditioning, CO2/CH4, He/CH4, CO2/N2, H2/CH4, O2/N2, olefin/paraffin, iso/normal paraffins separations, and other light gas mixture separations. The dual layer-coated membranes are especially useful for natural gas liquid (NGL) recovery and CO2 removal from natural gas.