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Patent
Membrane Technology and Research, Inc. | Date: 2016-11-02

A process for treating an effluent gas stream arising from a manufacturing operation that produces an olefin or an olefin derivative to recover unreacted olefin. The process involves compressing the effluent gas stream, which comprises an olefin, a paraffin, and a third gas, to produce a first compressed stream, then directing the first compressed stream to a membrane separation pretreatment step. The permeate stream withdrawn from this step is enriched in olefin and is sent to a second compressor, which produces a second compressed stream that is then cooled and condensed. The condensation step produces a liquid condensate and an uncondensed gas stream. The uncondensed gas stream undergoes a second membrane separation step to produce another olefin-enriched permeate stream, which is recirculated within the process prior to the second compression step, and an olefin-depleted residue stream, which may be purged from the process.


Patent
Membrane Technology and Research, Inc. | Date: 2016-12-07

A process for producing syngas with a high content of carbon monoxide, reflected in a high CO:CO_(2 )ratio. The process involves integrating membrane-based gas separation and steam methane reforming.


Grant
Agency: National Science Foundation | Branch: | Program: STTR | Phase: Phase II | Award Amount: 729.22K | Year: 2016

The broader impact/commercial potential of this Small Business Technology Transfer Phase II project is to produce a better natural gas treatment membrane that will allow end users to capture the ease of processing and environmental advantages of membrane technology at a substantially reduced price. Natural gas processing to remove CO2 and other contaminants is the largest industrial gas separation application with an estimated global separation equipment market of approximately $2-3 billion per year. At present, membrane processes have a 10% market share, while amine absorption processes account for the bulk of the market. Conventional membrane materials are limited by their relatively modest CO2/CH4 selectivity, which offsets their environmental and efficiency advantages. The novel perfluoro polymer membranes developed in this program show enhanced performance when treating gas mixtures at industrial relevant conditions. Study of these perfluoro polymer membranes will improve scientific understanding of structure/property relationships for a new family of materials. Most importantly, applied at a commercial scale, these new perfluoro membranes offer the potential to overcome the limitations of prior membranes, and thereby, transform natural gas processing. The objectives of this Phase II research project are to complete the development of novel perfluoropolymer membranes for use in natural gas CO2 removal. During Phase I, membranes with superior CO2/CH4 separation performance compared to commercial membranes were identified in comparative high-pressure mixture tests. In Phase II, the research and development plan is to scale up production of the most promising perfluoro polymer. An optimized membrane based on this polymer will be made on a roll-to-roll production line and fabricated into membrane modules. These modules will be evaluated in laboratory parametric experiments and validation tested at an operating natural gas field site. Results from these tests will be used to update an economic evaluation of the perfluoro membranes compared to conventional technology applied to natural gas CO2 removal. Completion of these technical objectives will bring this advanced membrane technology to the cusp of commercialization.


Patent
Membrane Technology, Research, Inc. and New York University | Date: 2016-04-28

A process for separating components of a gas mixture using gas-separation copolymer membranes. These membranes use a selective layer made from copolymers of an amorphous perfluorinated dioxolane and a fluorovinyl monomer. The resulting membranes have superior selectivity performance for gas pairs of interest while maintaining fast gas permeance compared to membranes prepared using conventional perfluoropolymers such as Teflon AF, Hlyflon AD, and Cytop.


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 C_(3+) 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 C_(3+) hydrocarbon enriched stream and a C_(3+) hydrocarbon depleted stream. The C_(3+) hydrocarbon enriched stream may be recycled back to the process to recover more NGL.


Patent
Membrane Technology and Research, Inc. | Date: 2016-09-21

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.


Patent
Membrane Technology and Research, Inc. | Date: 2016-03-16

A process for treating an effluent gas stream arising from a manufacturing operation that produces an olefin or a non-polymeric olefin derivative. The process involves cooling and condensing the effluent gas stream (104), which comprises an olefin, a paraffin, and a third gas, to produce a liquid condensate (108) and an uncondensed (residual) gas stream (114). Both streams are then passed through membrane separation steps (109; 115). The membrane separation of the uncondensed gas stream (114) results in an olefin-enriched stream (117) and an olefin-depleted stream (118). The olefin-enriched stream is recirculated within the process prior to the condensation step. The membrane separation of the condensate (108) also results in an olefin-enriched stream (111), which may be recycled for use within the manufacturing operation, and an olefin-depleted stream (113), which may be purged from the process.


Grant
Agency: NSF | Branch: Standard Grant | Program: | Phase: STTR PHASE II | Award Amount: 729.22K | Year: 2016

The broader impact/commercial potential of this Small Business Technology Transfer Phase II project is to produce a better natural gas treatment membrane that will allow end users to capture the ease of processing and environmental advantages of membrane technology at a substantially reduced price. Natural gas processing to remove CO2 and other contaminants is the largest industrial gas separation application with an estimated global separation equipment market of approximately $2-3 billion per year. At present, membrane processes have a 10% market share, while amine absorption processes account for the bulk of the market. Conventional membrane materials are limited by their relatively modest CO2/CH4 selectivity, which offsets their environmental and efficiency advantages. The novel perfluoro polymer membranes developed in this program show enhanced performance when treating gas mixtures at industrial relevant conditions. Study of these perfluoro polymer membranes will improve scientific understanding of structure/property relationships for a new family of materials. Most importantly, applied at a commercial scale, these new perfluoro membranes offer the potential to overcome the limitations of prior membranes, and thereby, transform natural gas processing.

The objectives of this Phase II research project are to complete the development of novel perfluoropolymer membranes for use in natural gas CO2 removal. During Phase I, membranes with superior CO2/CH4 separation performance compared to commercial membranes were identified in comparative high-pressure mixture tests. In Phase II, the research and development plan is to scale up production of the most promising perfluoro polymer. An optimized membrane based on this polymer will be made on a roll-to-roll production line and fabricated into membrane modules. These modules will be evaluated in laboratory parametric experiments and validation tested at an operating natural gas field site. Results from these tests will be used to update an economic evaluation of the perfluoro membranes compared to conventional technology applied to natural gas CO2 removal. Completion of these technical objectives will bring this advanced membrane technology to the cusp of commercialization.


Patent
Membrane Technology and Research, Inc. | Date: 2016-03-10

Disclosed herein is a power generation process in which a portion of the carbon dioxide generated by gaseous fuel combustion is recycled back to the power generation process, either pre-combustion, post-combustion, or both. The power generation process of the invention may be a combined cycle process or a traditional power generation process. The process utilizes sweep-based membrane separation.


Patent
Membrane Technology and Research, Inc. | Date: 2016-05-18

Disclosed herein is a process for separating components of a gas mixture using gas-separation copolymer membranes. These membranes use a selective layer made from copolymers of perfluorodioxolane monomers. The resulting membranes have superior selectivity performance for gas pairs of interest while maintaining fast gas permeance compared to membranes prepared using conventional perfluoropolymers, such as Teflon AF, Hyflon AD, and Cytop.

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