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公开(公告)号：US20190282922A1
公开(公告)日：2019-09-19
申请号：US16405496
申请日：2019-05-07
Inventor： Prakash Narayan Govindan , Gregory P. Thiel , Ronan K. McGovern , John H. Lienhard , Mostafa H. Elsharqawy
Abstract: A multi-stage bubble-column vapor mixture condenser comprises at least a first stage and a second stage. Each stage includes a carrier-gas inlet and a carrier-gas outlet, as well as a condenser chamber containing a condensing bath in fluid communication with the carrier-gas inlet and the carrier-gas outlet. The carrier-gas inlet is positioned to bubble carrier gas from the carrier-gas inlet up through the condensing bath, overcoming a hydrostatic head of the condensing bath. The carrier-gas outlet is positioned with an opening for carrier-gas extraction above the condensing bath, wherein the first-stage carrier-gas outlet is in fluid communication with the carrier-gas inlet of the second stage to facilitate flow of the carrier gas through the condensing bath in the condenser chamber of the first stage and then through the condensing bath in the condenser chamber of the second stage.
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2.发明申请公开(公告)号：US20170152156A1
公开(公告)日：2017-06-01
申请号：US15323376
申请日：2015-06-29
Inventor： Amro Al-Qutub , Prakash Narayan Govindan , John H. Lienhard
CPC classification number: C02F1/10 , B01D1/28 , B01D3/346 , B01D5/006 , C02F1/04 , C02F1/041 , C02F2103/08
Abstract: A carrier gas is directed through a humidification chamber in a humidifier, where the carrier gas flow is directly contacted with a feed liquid to humidify the carrier gas with water evaporated from the feed liquid, producing a humidified gas flow. The humidified gas flow is then compressed in a compressor and then directed through a dehumidification chamber in a dehumidifier, where the compressed humidified gas flow is dehumidified to condense water from the compressed humidified gas flow. The dehumidified gas flow is then expanded in an expander, wherein the expansion of the dehumidified gas flow generates motion (e.g., rotation of a shaft), and wherein the motion generated in the expander is transferred to the compressor, where the motion compresses the humidified gas flow. Heat is also removed from the expanded dehumidified gas flow and transferred to compressed dehumidified gas flow upstream from the expander.
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3.发明申请公开(公告)号：US20140263055A1
公开(公告)日：2014-09-18
申请号：US13958968
申请日：2013-08-05
Applicant: Massachusetts Institute of Technology
Inventor： Prakash Narayan Govindan , Windsor Sung , Steven Lam , Maximus G. St. John , John H. Lienhard, V , Mohammed Mirhi , Anurag Bajpayee
IPC: C02F5/12
CPC classification number: C02F5/08 , B01D61/025 , B01D61/04 , B01D61/145 , B01D61/364 , B01D61/44 , B01D61/58 , B01D2311/08 , C02F1/04 , C02F1/441 , C02F1/444 , C02F1/66 , C02F1/683 , C02F5/12 , C02F9/00 , C02F2101/10 , C02F2103/08 , C02F2103/10 , C02F2303/16 , C09K8/528 , Y02A20/128 , Y02A20/131 , Y02A20/134 , B01D2311/18
Abstract: Cations that can precipitate from an aqueous composition to produce scaling are sequestered by adding a multi-dentate ligand to the aqueous composition. The multi-dentate ligand bonds with the cation to form a non-scaling ionic complex; and the aqueous solution with the ionic complex is used in a process that produces substantially pure water from the aqueous composition, where the cation, absent formation of the ionic complex, is subject to scaling. The pH of the aqueous composition (or a brine including components of the aqueous composition) is then reduced to release the cation from the multi-dentate ligand; and the multi-dentate ligand, after the cation is released, is then reused in a predominantly closed loop.
Abstract translation: 可以通过向水性组合物中加入多齿配体将螯合物从水性组合物沉淀以产生结垢。 多齿配体与阳离子结合形成非结垢离子络合物; 并且具有离子络合物的水溶液用于从水性组合物产生基本上纯的水的方法，其中离子络合物的形成不存在结垢的阳离子。 然后还原水性组合物（或包含含水组合物的组分的盐水）的pH以从多齿配体释放阳离子; 并且在释放阳离子之后的多齿配体然后在主要闭合的环路中重新使用。
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公开(公告)号：US20220017384A1
公开(公告)日：2022-01-20
申请号：US17488478
申请日：2021-09-29
Inventor： Prakash Narayan Govindan , Mostafa H. Elsharqawy , Steven Lam , Maximus G. St. John , John H. Lienhard
Abstract: A bubble-column-humidification apparatus includes a humidifier chamber configured to receive the feed liquid from a feed-liquid source. A bubble distributor is contained in the humidifier chamber; and a humidifier bath of the feed liquid is also contained in the humidifier chamber above the bubble distributor. The feed liquid forms a continuous and majority phase of the humidifier bath and fills a majority of the humidifier chamber, which has a width at least twice as great as its height. A lower gas region is located below the bubble distributor and the humidifier bath in the humidifier chamber and is configured to receive a carrier gas from a carrier-gas source and to disperse the carrier gas through the bubble distributor. The carrier gas in the lower gas region has a pressure greater than the hydrostatic pressure of the humidifier bath.
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公开(公告)号：US11161755B2
公开(公告)日：2021-11-02
申请号：US16042423
申请日：2018-07-23
Inventor： Prakash Narayan Govindan , Mostafa H. Elsharqawy , Steven Lam , Maximus G. St. John , John H. Lienhard
IPC: C02F1/04 , B01D3/14 , B01D3/06 , B01D3/32 , C02F1/06 , B01D19/00 , B01D1/14 , C02F103/08 , C02F103/10
Abstract: A feed liquid flows into a second-stage humidifier chamber to form a second-stage humidifier bath. A first remnant of the feed liquid from the second-stage humidifier chamber then flows into a first-stage humidifier chamber to form a first-stage humidifier bath having a temperature lower than that of the second-stage bath. A second remnant of the feed liquid is then removed from the first-stage humidifier. Meanwhile, a carrier gas is injected into and bubbled through the first-stage humidifier bath, collecting a vaporizable component in vapor form from the first remnant of the feed liquid to partially humidify the carrier gas. The partially humidified carrier gas is then bubbled through the second-stage humidifier bath, where the carrier gas collects more of the vaporizable component in vapor form from the feed liquid to further humidify the carrier gas before the humidified carrier gas is removed from the second-stage humidifier chamber.
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Patent Agency Ranking
公开(公告)号：US09403104B2
公开(公告)日：2016-08-02
申请号：US14744907
申请日：2015-06-19
Inventor： Prakash Narayan Govindan , Gregory P. Thiel , Ronan K. McGovern , John H. Lienhard , Mostafa H. Elsharqawy
CPC classification number: B01D5/0036 , B01D3/007 , B01D3/18 , B01D3/205 , B01D5/0027 , B01D5/003 , B01D5/006 , B01F3/04106 , B01F3/04468 , B01F2215/0091 , C02F1/048 , C02F2103/08 , F24F3/14 , Y02W10/37
Abstract: A multi-stage bubble-column vapor mixture condenser comprises at least a first stage and a second stage. Each stage includes a carrier-gas inlet and a carrier-gas outlet, as well as a condenser chamber containing a condensing bath in fluid communication with the carrier-gas inlet and the carrier-gas outlet. The carrier-gas inlet is positioned to bubble carrier gas from the carrier-gas inlet up through the condensing bath, overcoming a hydrostatic head of the condensing bath. The carrier-gas outlet is positioned with an opening for carrier-gas extraction above the condensing bath, wherein the first-stage carrier-gas outlet is in fluid communication with the carrier-gas inlet of the second stage to facilitate flow of the carrier gas through the condensing bath in the condenser chamber of the first stage and then through the condensing bath in the condenser chamber of the second stage.
Abstract translation: 多级泡罩塔蒸汽混合物冷凝器至少包括第一级和第二级。 每个阶段包括载气入口和载气出口，以及包含与载气入口和载气出口流体连通的冷凝浴的冷凝器室。 载气入口被定位成将载气从载气入口向上鼓起通过冷凝浴，克服冷凝浴的静水压头。 载气出口被定位成具有用于在冷凝浴上方进行载气提取的开口，其中第一级载气出口与第二级的载气进口流体连通，以便于载气流动 通过第一级的冷凝器室中的冷凝浴，然后通过第二级的冷凝器室中的冷凝浴。
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公开(公告)号：US20150321118A1
公开(公告)日：2015-11-12
申请号：US14806357
申请日：2015-07-22
Inventor： Prakash Narayan Govindan , Mostafa H. Elsharqawy , Steven Lam , Maximus G. St. John , John H. Lienhard
CPC classification number: C02F1/048 , B01D1/14 , B01D3/065 , B01D3/146 , B01D3/32 , B01D19/0015 , C02F1/06 , C02F2103/08 , C02F2103/10
Abstract: A feed liquid flows into a second-stage humidifier chamber to form a second-stage humidifier bath. A first remnant of the feed liquid from the second-stage humidifier chamber then flows into a first-stage humidifier chamber to form a first-stage humidifier bath having a temperature lower than that of the second-stage bath. A second remnant of the feed liquid is then removed from the first-stage humidifier. Meanwhile, a carrier gas is injected into and bubbled through the first-stage humidifier bath, collecting a vaporizable component in vapor form from the first remnant of the feed liquid to partially humidify the carrier gas. The partially humidified carrier gas is then bubbled through the second-stage humidifier bath, where the carrier gas collects more of the vaporizable component in vapor form from the feed liquid to further humidify the carrier gas before the humidified carrier gas is removed from the second-stage humidifier chamber.
Abstract translation: 进料液体流入第二级加湿器室以形成第二级加湿器浴。 来自第二级加湿器室的进料液体的第一残余物然后流入第一级加湿器室以形成温度低于第二级加湿器的温度的第一级加湿器浴。 然后将进料液体的第二残余物从第一级加湿器中除去。 同时，将载气注入并鼓泡通过第一级加湿器浴，从进料液体的第一残余物中收集蒸气形式的可蒸发组分以部分地加湿载气。 然后将部分加湿的载气鼓泡通过第二级加湿器浴，其中载体气体从进料液体中收集蒸气形式的更多可蒸发组分，以在加湿的载气从第二级加湿器中除去之前进一步加湿载气， 舞台加湿器室。
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公开(公告)号：US20150290557A1
公开(公告)日：2015-10-15
申请号：US14744907
申请日：2015-06-19
Inventor： Prakash Narayan Govindan , Gregory P. Thiel , Ronan K. McGovern , John H. Lienhard , Mostafa H. Elsharqawy
CPC classification number: B01D5/0036 , B01D3/007 , B01D3/18 , B01D3/205 , B01D5/0027 , B01D5/003 , B01D5/006 , B01F3/04106 , B01F3/04468 , B01F2215/0091 , C02F1/048 , C02F2103/08 , F24F3/14 , Y02W10/37
Abstract: A multi-stage bubble-column vapor mixture condenser comprises at least a first stage and a second stage. Each stage includes a carrier-gas inlet and a carrier-gas outlet, as well as a condenser chamber containing a condensing bath in fluid communication with the carrier-gas inlet and the carrier-gas outlet. The carrier-gas inlet is positioned to bubble carrier gas from the carrier-gas inlet up through the condensing bath, overcoming a hydrostatic head of the condensing bath. The carrier-gas outlet is positioned with an opening for carrier-gas extraction above the condensing bath, wherein the first-stage carrier-gas outlet is in fluid communication with the carrier-gas inlet of the second stage to facilitate flow of the carrier gas through the condensing bath in the condenser chamber of the first stage and then through the condensing bath in the condenser chamber of the second stage.
Abstract translation: 多级泡罩塔蒸汽混合物冷凝器至少包括第一级和第二级。 每个阶段包括载气入口和载气出口，以及包含与载气入口和载气出口流体连通的冷凝浴的冷凝器室。 载气入口被定位成将载气从载气入口向上鼓起通过冷凝浴，克服冷凝浴的静水压头。 载气出口被定位成具有用于在冷凝浴上方进行载气提取的开口，其中第一级载气出口与第二级的载气进口流体连通，以便于载气流动 通过第一级的冷凝器室中的冷凝浴，然后通过第二级的冷凝器室中的冷凝浴。
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公开(公告)号：US20180327278A1
公开(公告)日：2018-11-15
申请号：US16042423
申请日：2018-07-23
Applicant: Massachusetts Institute of Technology
Inventor： Prakash Narayan Govindan , Mostafa H. Elsharqawy , Steven Lam , Maximus G. St. John , John H. Lienhard
CPC classification number: C02F1/048 , B01D1/14 , B01D3/065 , B01D3/146 , B01D3/32 , B01D19/0015 , C02F1/06 , C02F2103/08 , C02F2103/10
Abstract: A feed liquid flows into a second-stage humidifier chamber to form a second-stage humidifier bath. A first remnant of the feed liquid from the second-stage humidifier chamber then flows into a first-stage humidifier chamber to form a first-stage humidifier bath having a temperature lower than that of the second-stage bath. A second remnant of the feed liquid is then removed from the first-stage humidifier. Meanwhile, a carrier gas is injected into and bubbled through the first-stage humidifier bath, collecting a vaporizable component in vapor form from the first remnant of the feed liquid to partially humidify the carrier gas. The partially humidified carrier gas is then bubbled through the second-stage humidifier bath, where the carrier gas collects more of the vaporizable component in vapor form from the feed liquid to further humidify the carrier gas before the humidified carrier gas is removed from the second-stage humidifier chamber.
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公开(公告)号：US20170174543A1
公开(公告)日：2017-06-22
申请号：US15448429
申请日：2017-03-02
Applicant: Massachusetts Institute of Technology
Inventor： Prakash Narayan Govindan , Windsor Sung , Steven Lam , Maximus G. St. John , John H. Lienhard , Mohammed Mirhi , Anurag Bajpayee
CPC classification number: C02F5/08 , B01D61/025 , B01D61/04 , B01D61/145 , B01D61/364 , B01D61/44 , B01D61/58 , B01D2311/08 , C02F1/04 , C02F1/441 , C02F1/444 , C02F1/66 , C02F1/683 , C02F5/12 , C02F9/00 , C02F2101/10 , C02F2103/08 , C02F2103/10 , C02F2303/16 , C09K8/528 , Y02A20/128 , Y02A20/131 , Y02A20/134 , B01D2311/18
Abstract: Cations that can precipitate from an aqueous composition to produce scaling are sequestered by adding a multi-dentate ligand to the aqueous composition. The multi-dentate ligand bonds with the cation to form a non-scaling ionic complex; and the aqueous solution with the ionic complex is used in a process that produces substantially pure water from the aqueous composition, where the cation, absent formation of the ionic complex, is subject to scaling. The pH of the aqueous composition (or a brine including components of the aqueous composition) is then reduced to release the cation from the multi-dentate ligand; and the multi-dentate ligand, after the cation is released, is then reused in a predominantly closed loop.
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