公开(公告)号：US10556206B2

公开(公告)日：2020-02-11

申请号：US15252805

申请日：2016-08-31

Applicant: Savannah River Nuclear Solutions, LLC

Inventor： Xin Xiao ,  Henry T. Sessions ,  Lucas M. Angelette ,  Paul R. Beaumont ,  David W. Babineau

IPC: B01D59/42 ,  C02F1/469 ,  C02F1/66 ,  B01D71/02 ,  B01D71/32 ,  B01D69/08 ,  G21F9/06 ,  C01B4/00 ,  B01D59/38 ,  B01D59/50 ,  B01D59/14 ,  C02F101/10 ,  C02F101/00

Abstract: Methods and systems for the separation of isotopes from an aqueous stream are described as can be utilized in one embodiment to remove and recover tritium from contaminated water. Methods include counter-current flow of an aqueous stream on either side of a separation membrane. The separation membrane includes an isotope selective layer (e.g., graphene) and an ion conductive supporting layer (e.g., Nafion®). An electronic driving force encourages passage of isotopes selectively across the membrane to enrich the flow in the isotopes.

公开(公告)号：US10392565B2

公开(公告)日：2019-08-27

申请号：US15841927

申请日：2017-12-14

Applicant: Savannah River Nuclear Solutions, LLC

Inventor： Xin Xiao ,  Anthony B. Thompson ,  Martin P. Sulic ,  Patrick A. Ward ,  Donald L. Anton

IPC: C10G1/00 ,  C10G1/02 ,  C01B32/50

Abstract: Highly efficient and universal biomass conversion methods are described. Methods utilize a base-catalyzed decarboxylation reaction in a conversion process carried out in the presence of excess base to overcome carbonate formation from CO2. Methods can efficiently convert all components of a biomass feedstock to liquid hydrocarbons and carbon dioxide byproduct. The process has several versions: hydrolysis and alcoholysis, etc. The chemical process can be carried out with nearly 100% conversion for any type of biomass feedstock and requires no expensive or complicated pretreatment. The conversion reactions can be carried out at moderate temperatures of 170-300° C. and form a product that can include a mixture of hydrocarbons and oxygenated hydrocarbons, including alcohols and phenol derivatives.

公开(公告)号：US10322405B2

公开(公告)日：2019-06-18

申请号：US15296135

申请日：2016-10-18

Applicant: SAVANNAH RIVER NUCLEAR SOLUTIONS, LLC

Inventor： Xin Xiao ,  William D. Rhodes

IPC: B01J23/62 ,  B01J23/42 ,  B01J21/18 ,  B01J23/89 ,  B01J35/00 ,  B01J35/02 ,  B01J37/02 ,  H01M4/92 ,  B01J21/04 ,  B01J35/10 ,  B01J37/08 ,  H01M4/88

Abstract: Supported catalysts having an atomic level single atom structure are provided such that substantially all the catalyst is available for catalytic function. Processes of forming a catalyst unto a porous catalyst support is also provided.

公开(公告)号：US10436516B2

公开(公告)日：2019-10-08

申请号：US13974525

申请日：2013-08-23

Applicant: Savannah River Nuclear Solutions, LLC

Inventor： Leung K. Heung ,  Henry T. Sessions, Jr. ,  Xin Xiao ,  Sharon H. Redd ,  David M. Immel

IPC: F28D7/00 ,  F28D7/04 ,  B01D59/00

Abstract: Thermal cycling devices are provided. In one embodiment, a thermal cycling device includes a packed tube comprising an inlet portion defining an inlet and an outlet portion defining an outlet. The packed tube is provided in a double coil arrangement, wherein the double coil arrangement causes radially neighboring turns of the packed tube to have opposing flow directions therethrough. The thermal cycling device further includes a cooling device disposed axially adjacent to the packed tube, and a heating device disposed axially adjacent to the packed tube opposite the cooling device.

公开(公告)号：US10381121B2

公开(公告)日：2019-08-13

申请号：US15034611

申请日：2013-11-13

Applicant: SAVANNAH RIVER NUCLEAR SOLUTIONS, LLC

Inventor： Xin Xiao

IPC: B01D59/00 ,  G21F9/12 ,  C01B4/00 ,  G21F9/30 ,  B01D15/26 ,  B01D53/04 ,  B01D59/26 ,  B01D59/28 ,  C02F1/28 ,  C02F101/00

Abstract: Methods and systems directed to the separation of tritium from an aqueous stream are described. The separation method is a multi-stage method that includes a first stage during which tritium of a tritium-contaminated aqueous stream is adsorbed onto a separation phase, a second stage during which the adsorbed tritium is exchanged with hydrogen in a gaseous stream to provide a gaseous stream with a high tritium concentration, and a third stage during which the tritium of the gaseous stream is separated from the gaseous stream as a gaseous tritium product.

公开(公告)号：US20160284433A1

公开(公告)日：2016-09-29

申请号：US15034611

申请日：2013-11-13

Applicant: SAVANNAH RIVER NUCLEAR SOLUTIONS, LLC

Inventor： Xin Xiao

IPC: G21F9/12 ,  B01D59/26 ,  C01B4/00 ,  B01D53/04 ,  B01D15/26 ,  C02F1/28 ,  G21F9/30 ,  B01D59/28

CPC classification number: G21F9/12 ,  B01D15/26 ,  B01D53/0423 ,  B01D53/0462 ,  B01D59/26 ,  B01D59/28 ,  B01D2253/1122 ,  B01D2257/108 ,  C01B4/00 ,  C02F1/281 ,  C02F1/285 ,  C02F2101/006 ,  G21F9/301

Abstract: Methods and systems directed to the separation of tritium from an aqueous stream are described. The separation method is a multi-stage method that includes a first stage during which tritium of a tritium-contaminated aqueous stream is adsorbed onto a separation phase, a second stage during which the adsorbed tritium is exchanged with hydrogen in a gaseous stream to provide a gaseous stream with a high tritium concentration, and a third stage during which the tritium of the gaseous stream is separated from the gaseous stream as a gaseous tritium product.

Abstract translation: 描述了从含水流中分离氚的方法和系统。 分离方法是多阶段方法，其包括第一阶段，其中氚污染的水流的氚被吸附到分离相上，第二阶段中吸附的氚与氢气在气流中交换以提供 具有高氚浓度的气流，以及第三阶段，其中气态氚的氚作为气态氚产物与气流分离。

公开(公告)号：US20190185757A1

公开(公告)日：2019-06-20

申请号：US15841927

申请日：2017-12-14

Applicant: Savannah River Nuclear Solutions, LLC

Inventor： Xin Xiao ,  Anthony B. Thompson ,  Martin P. Sulic ,  Patrick A. Ward ,  Donald L. Anton

IPC: C10G1/02 ,  C01B32/50

CPC classification number: C10G1/02 ,  C01B32/50 ,  C01B32/55 ,  C10G2300/1014 ,  C10G2300/202 ,  C10G2300/44

Abstract: Highly efficient and universal biomass conversion methods are described. Methods utilize a base-catalyzed decarboxylation reaction in a conversion process carried out in the presence of excess base to overcome carbonate formation from CO2. Methods can efficiently convert all components of a biomass feedstock to liquid hydrocarbons and carbon dioxide byproduct. The process has several versions: hydrolysis and alcoholysis, etc. The chemical process can be carried out with nearly 100% conversion for any type of biomass feedstock and requires no expensive or complicated pretreatment. The conversion reactions can be carried out at moderate temperatures of 170-300° C. and form a product that can include a mixture of hydrocarbons and oxygenated hydrocarbons, including alcohols and phenol derivatives.

公开(公告)号：US20180056240A1

公开(公告)日：2018-03-01

申请号：US15252805

申请日：2016-08-31

Applicant: Savannah River Nuclear Solutions, LLC

Inventor： Xin Xiao ,  Henry T. Sessions ,  Lucas M. Angelette ,  Paul R. Beaumont ,  David W. Babineau

IPC: B01D59/42 ,  C02F1/469 ,  C02F1/66 ,  B01D71/02 ,  B01D71/32 ,  B01D69/08 ,  G21F9/06 ,  C01B4/00

CPC classification number: B01D59/42 ,  B01D59/14 ,  B01D59/50 ,  B01D61/00 ,  B01D61/007 ,  B01D61/42 ,  B01D63/02 ,  B01D67/0079 ,  B01D69/08 ,  B01D71/021 ,  B01D71/022 ,  B01D71/32 ,  C01B4/00 ,  C02F1/444 ,  C02F1/469 ,  C02F1/4696 ,  C02F1/66 ,  C02F2101/006 ,  C02F2101/10 ,  G21F9/06 ,  G21F9/12

Abstract: Methods and systems for the separation of isotopes from an aqueous stream are described as can be utilized in one embodiment to remove and recover tritium from contaminated water. Methods include counter-current flow of an aqueous stream on either side of a separation membrane. The separation membrane includes an isotope selective layer (e.g., graphene) and an ion conductive supporting layer (e.g., Nafion®). An electronic driving force encourages passage of isotopes selectively across the membrane to enrich the flow in the isotopes.

公开(公告)号：US11087897B2

公开(公告)日：2021-08-10

申请号：US16512883

申请日：2019-07-16

Applicant: SAVANNAH RIVER NUCLEAR SOLUTIONS, LLC

Inventor： Xin Xiao

IPC: B01D49/00 ,  G21F9/12 ,  C01B4/00 ,  G21F9/30 ,  B01D15/26 ,  B01D53/04 ,  B01D59/26 ,  B01D59/28 ,  C02F1/28 ,  C02F101/00

Abstract: Methods and systems directed to the separation of tritium from an aqueous stream are described. The separation method is a multi-stage method that includes a first stage during which tritium of a tritium-contaminated aqueous stream is adsorbed onto a separation phase, a second stage during which the adsorbed tritium is exchanged with hydrogen in a gaseous stream to provide a gaseous stream with a high tritium concentration, and a third stage during which the tritium of the gaseous stream is separated from the gaseous stream as a gaseous tritium product.

公开(公告)号：US11058994B2

公开(公告)日：2021-07-13

申请号：US16251456

申请日：2019-01-18

Applicant: SAVANNAH RIVER NUCLEAR SOLUTIONS, LLC

Inventor： Xin Xiao ,  Lucas M. Angelette ,  Paul R. Beaumont ,  Henry T. Sessions ,  Heather Mentzer ,  Jared L. Clark

IPC: B01D59/26 ,  B01D53/86 ,  B01D53/96

Abstract: Work area cleanup systems and methods are described for removing tritium from the atmosphere of a work area such as inert gas gloveboxes. Systems utilize a multi-column approach with parallel processing. Tritium of a tritium-contaminated stream is converted into tritiated water and adsorbed onto the separation phase of a first column as a second, parallel column can be simultaneously regenerated. The gaseous stream that exits the column during the regeneration phase can carry a high tritium concentration. The system can also include and a separation stage during which the tritium of the gaseous regeneration stream can be separated from the remainder of the regeneration product.