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公开(公告)号：US20230202872A1
公开(公告)日：2023-06-29
申请号：US18111264
申请日：2023-02-17
Inventor： Devinder Mahajan
IPC: C02F1/22
CPC classification number: C02F1/22 , C02F2209/03 , C02F2209/02 , C02F2201/009 , C02F2301/046 , C02F2201/008 , C02F2303/10 , C02F2103/32
Abstract: A method for treating wastewater, comprising: (i) injecting a hydrate-forming gas (e.g., propane) into the wastewater under conditions of elevated pressure and reduced temperature to form a solid hydrate composed of the hydrate-forming gas and water from the wastewater; and (ii) separating the solid hydrate from the wastewater to result in removal of water from the wastewater, thereby resulting in partially dewatered wastewater, and optionally, (iii) lowering the pressure and/or raising the temperature of the solid hydrate to decompose the solid hydrate into reformed hydrate-forming gas and reformed water, and further optionally, recycling the reformed hydrate-forming gas for use in step (i) and/or capturing the reformed water from step (iii) and further decontaminating until suitable for release into waterway or for use in a process. The invention is also directed to an apparatus for practicing the method described above.
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公开(公告)号：US09862665B2
公开(公告)日：2018-01-09
申请号：US14556473
申请日：2014-12-01
Inventor： Benjamin Chu , Benjamin S. Hsiao , Devinder Mahajan , Tsung-Ming Yeh
IPC: B01D61/36 , B01D69/12 , B01D69/14 , B01D71/02 , B01D71/26 , B01D71/38 , C07C29/76 , C12G3/08 , B01D71/10 , B01D71/44
CPC classification number: C07C29/76 , B01D61/362 , B01D61/366 , B01D69/12 , B01D69/148 , B01D71/028 , B01D71/10 , B01D71/26 , B01D71/38 , B01D71/44 , B01D2323/39 , B01D2325/04 , B01D2325/36 , C12G3/08
Abstract: Membranes are provided for energy efficient purification of alcohol by pervaporation. Such membranes include a nanofibrous scaffold in combination with a barrier layer. The membranes also include zeolites in the barrier layer. The membranes may, in embodiments, also include a substrate.
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3.发明申请POLYMERIC NANOFIBROUS COMPOSITE MEMBRANES FOR ENERGY EFFICIENT ETHANOL DEHYDRATION 有权用于能量有效的乙醇脱水的聚合物纳米复合膜公开(公告)号：US20150080616A1
公开(公告)日：2015-03-19
申请号：US14556473
申请日：2014-12-01
Inventor： Benjamin Chu , Benjamin S. Hsiao , Devinder Mahajan , Tsung-Ming Yeh
CPC classification number: C07C29/76 , B01D61/362 , B01D61/366 , B01D69/12 , B01D69/148 , B01D71/028 , B01D71/10 , B01D71/26 , B01D71/38 , B01D71/44 , B01D2323/39 , B01D2325/04 , B01D2325/36 , C12G3/08
Abstract: Membranes are provided for energy efficient purification of alcohol by pervaporation. Such membranes include a nanofibrous scaffold in combination with a barrier layer. The membranes also include zeolites in the barrier layer. The membranes may, in embodiments, also include a substrate.
Abstract translation: 提供膜用于通过渗透蒸发来有效地纯化醇。 这样的膜包括与阻挡层组合的纳米纤维支架。 膜还包括阻挡层中的沸石。 在实施方案中，膜可以还包括底物。
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公开(公告)号：US20200377382A1
公开(公告)日：2020-12-03
申请号：US16890567
申请日：2020-06-02
Inventor： Devinder Mahajan
IPC: C02F1/22
Abstract: A method for treating wastewater, comprising: (i) injecting a hydrate-forming gas (e.g., propane) into the wastewater under conditions of elevated pressure and reduced temperature to form a solid hydrate composed of the hydrate-forming gas and water from the wastewater; and (ii) separating the solid hydrate from the wastewater to result in removal of water from the wastewater, thereby resulting in partially dewatered wastewater, and optionally, (iii) lowering the pressure and/or raising the temperature of the solid hydrate to decompose the solid hydrate into reformed hydrate-forming gas and reformed water, and further optionally, recycling the reformed hydrate-forming gas for use in step (i) and/or capturing the reformed water from step (iii) and further decontaminating until suitable for release into waterway or for use in a process. The invention is also directed to an apparatus for practicing the method described above.
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