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Characterization of micro-mixing in a novel impinging streams reactor

Hui HU, Zhiming CHEN, Zhen JIAO

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1,   Pages 58-64 doi: 10.1007/s11705-009-0106-8

Abstract: This paper presents an experimental investigation of a novel impinging stream reactor (ISR) with theThe integral mixing quality in the reactor was measured with the iodide-iodate reaction and showed excellentcharacteristic micro-mixing time was 0.002—0.02 s, which was much shorter than that in the stirred tank reactor

Keywords： micro-mixing     impinging streams reactor     turbulent mixing     mass transfer    

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Residence time distribution and modeling of the liquid phase in an impinging stream reactor

Xingjun WANG, Xianhui HU, Lishun HU, Guangsuo YU, Fuchen WANG,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 3,   Pages 353-359 doi: 10.1007/s11705-009-0262-x

Abstract: Based on some experimental investigations of liquid phase residence time distribution (RTD) in an impingingstream reactor, a two-dimensional plug-flow dispersion model for predicting the liquid phase RTD inthe reactor was proposed.center-to-wall, which indicates that the liquid RTD is dominated mainly by axial liquid dispersion in the impingingstream reactor.

Keywords： RTD     liquid dispersion     reactor     liquid     independent    

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Dehydration of natural gas and biogas streams using solid desiccants: a review

Soheil Bahraminia, Mansoor Anbia, Esmat Koohsaryan

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 5,   Pages 1050-1074 doi: 10.1007/s11705-020-2025-7

Abstract: Thus, removing water vapor from these gas streams is mandatory.

Keywords： natural gas     biogas     dehydration     adsorption     solid desiccant    

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Numerical study of droplet dynamics impinging onto steel plate covered with scale layer

Jan BOHá?EK, Ale? HORáK

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 389-398 doi: 10.1007/s11465-010-0108-8

Abstract: The steel hot rolling process is inseparably connected to an oxide layer called “scale” at high temperatures. Hydraulic descaling of rolled material is a part of all rolling trains. Surface quality after descaling is fundamental for the final surface quality of a rolled product. The process itself is not theoretically well described; various different approaches have been used to clarify the descaling problem. This paper describes the dynamics of high-speed impact between the compressible water droplet and the steel scale layer. The phenomenon is known as water hammer effect. The purpose of this study is to numerically verify the fact that impact stress can be a significant factor during the descaling process. Considering a high droplet impact speed (100–300 ms ), inferential extremely short time interval (0.1–5 μs) peaks in impact pressure reaching 300 MPa can be found. Droplet dynamics was simulated with the help of LS-Dyna solver, whereas the stress analysis was performed in ANSYS interface. The extreme pressure peaks of very short duration in an impact area are a new phenomenon in the descaling theory.

Keywords： hydraulic descaling     scale     rolling     water-hammer     descaling theory    

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Latest research progress for LBE coolant reactor of China initiative accelerator driven system project

Frontiers in Energy 2021, Volume 15, Issue 4,   Pages 810-831 doi: 10.1007/s11708-021-0760-1

Abstract: The subcritical reactor is an important part of the whole CiADS project.Currently, a pool-type LBE cooled fast reactor is chosen as the subcritical reactor of the CiADS.conducted simultaneously to support the design and construction of the CiADS LBE-cooled subcritical reactorTherefore, it is necessary to introduce the efforts made in China in the LBE-cooled fast reactor to provide, and the efforts to build the LBE-cooled fast reactor are presented.

Keywords： LBE (lead bismuth eutectic) coolant reactor     China initiative Accelerator Driven System (CiADS) project    

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An old issue and a new challenge for nuclear reactor safety

F. D’AURIA

Frontiers in Energy 2021, Volume 15, Issue 4,   Pages 854-859 doi: 10.1007/s11708-021-0729-0

Abstract: Nuclear reactor safety (NRS) and the branch accident analysis (AA) constitute proven technologies: these

Keywords： large break loss of coolant accident (LBLOCA)     nuclear reactor safety (NRS)     licensing perspectives     basis    

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Convective mass transfer from a horizontal rotating cylinder in a slot air jet flow

Hongting MA , Dandan MA , Na YANG ,

Frontiers in Energy 2009, Volume 3, Issue 3,   Pages 289-296 doi: 10.1007/s11708-009-0019-8

Abstract: The effects of air jet impinging on the mass transfer characteristics from a rotating spinning cylinder

Keywords： air jet impinging     rotating cylinder     critical point     mass transfer characteristics    

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Impact of roxarsone on the UASB reactor performance and its degradation

Mengchuan Shui, Feng Ji, Rui Tang, Shoujun Yuan, Xinmin Zhan, Wei Wang, Zhenhu Hu

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 6, doi: 10.1007/s11783-016-0871-9

Abstract: Impact of continuous ROX addition on performance of UASB reactor was investigated With continuous ROXthe morphology and bacterial diversity of AGS A possible biotransformation pathway of ROX in the UASB reactorIn this study, the impact of ROX and its degradation products on the performance of the UASB reactorand the degradation and speciation of ROX in the reactor were investigated.As(III), As(V), MMA(V), DMA(V), HAPA and an unknown arsenic compound were detected in the reactor, and

Keywords： Anaerobic digestion     Anaerobic granular sludge (AGS)     Arsenic species     Impact     Roxarsone (ROX)     UASB reactor    

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Nitrogen-retaining property of compost in an aerobic thermophilic composting reactor for the sanitary

Fan BAI, Xiaochang WANG,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 2,   Pages 228-234 doi: 10.1007/s11783-010-0022-7

Abstract: In this study, batch experiments were conducted using a closed aerobic thermophilic composting reactorof NH–N was accompanied by the accumulation of NH gas in the ammonia absorber connected to the reactor

Keywords： nitrogen retention     composting reactor     human feces     aerobic     thermophilic     fertilizer    

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A new approach for fuel injection into a solar receiver/reactor: Numerical and experimental investigation

M Helal Uddin, Nesrin Ozalp, Jens Heylen, Cedric Ophoff

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4,   Pages 683-696 doi: 10.1007/s11705-018-1782-z

Abstract:

An innovative and efficient design of solar receivers/reactors can enhance the production of clean fuels via concentrated solar energy. This study presents a new jet-type burner nozzle for gaseous feedstock injection into a cavity solar receiver inspired from the combustion technology. The nozzle design was adapted from a combustion burner and successfully implemented into a solar receiver and studied the influence of the nozzle design on the fluid mixing and temperature distribution inside the solar receiver using a 7 kW solar simulator and nitrogen as working fluid. Finally, a thorough computational fluid dynamics (CFD) analysis was performed and validated against the experimental results. The CFD results showed a variation of the gas flow pattern and gas mixing after the burner nozzle adaptation, which resulted an intense effect on the heat transfer inside the solar receiver.

Keywords： solar reactor     nozzle     CFD     heat transfer     mixing and recirculation    

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Advances in the slurry reactor technology of the anthraquinone process for H

Hongbo Li, Bo Zheng, Zhiyong Pan, Baoning Zong, Minghua Qiao

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1,   Pages 124-131 doi: 10.1007/s11705-017-1676-5

Abstract: The detailed comparison indicates that the production of hydrogen peroxide with the fluidized-bed reactorThe key characters of the production technology of hydrogen peroxide based on the fluidized-bed reactorIt is apparent that substituting the fluidized-bed reactor for the fixed-bed reactor is a major direction

Keywords： anthraquinone process     fixed-bed reactor     slurry-bed reactor     hydrogen peroxide    

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Performance of a hybrid anaerobic-contact oxidation biofilm baffled reactor for the treatment of decentralized

Minmin LIU,Ying ZHAO,Beidou XI,Li’an HOU,Xunfeng XIA

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 4,   Pages 598-606 doi: 10.1007/s11783-013-0576-2

Abstract: A novel hybrid anaerobic-contact oxidation biofilm baffled reactor (HAOBR) was developed to simultaneouslyThe performance of reactor system was studied regarding the hydraulic retention time (HRT), microbialThe reactor performed stably for treating decentralized molasses wastewater.The good performance of the reactor can be attributed to the high resistance of COD and hydraulic shockthe high solid retention time of contact oxidation biofilm contributed to stable performance of the reactor

Keywords： combination filler     contact oxidation biofilm     food wastewater     anaerobic baffled reactor    

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Nitrifying population dynamics in a redox stratified membrane biofilm reactor (RSMBR) for treating ammonium-rich

Rongchang WANG, Xinmin ZHAN, Yalei ZHANG, Jianfu ZHAO

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 1,   Pages 48-56 doi: 10.1007/s11783-011-0305-7

Abstract: performance and nitrifying population dynamics were investigated in a redox stratified membrane biofilm reactor

Keywords： ammonium-rich wastewater     membrane biofilm reactor     nitrification     redox stratification     shortcut nitrogen    

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The Status and Prospects of Fast Reactor Technology Development in China

Xu Mi

Strategic Study of CAE 2008, Volume 10, Issue 1,   Pages 70-76

Abstract: and 240 GWe in 2030 and 2050 respectively.The basic strategy of PWR-FBR matched development with fast reactoris that the partitioning and transmutation of MA will be realized using fast burner and ADS.The fast reactorengineering development will be divided into three steps: China Experimental fast Reactor(CEFR 65 MWt/20 MWe), China Prototype/Demon_stration Fast Reactor(CPFR/CDFR≥1 500 MWt/600 MWe)and China DemonstrationFast Breeder Reactor(CDFBR100～1 500 MWe).The CEFR is under installation and pre-operation testing with

Keywords： fast reactor development strategy     breeder     burner     China experimental fast reactor    

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Dynamic simulation of a space gas-cooled reactor power system with a closed Brayton cycle

Frontiers in Energy 2021, Volume 15, Issue 4,   Pages 916-929 doi: 10.1007/s11708-021-0757-9

Abstract: Space nuclear reactor power (SNRP) using a gas-cooled reactor (GCR) and a closed Brayton cycle (CBC)The system finally has the ability to achieve a new steady-state with a higher reactor power.When the GCR is shut down in an emergency, the residual heat of the reactor can be removed through the

Keywords： gas-cooled space nuclear reactor power     closed Brayton cycle     system startup and shutdown     positive reactivity    

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Title Author Date Type Operation

Characterization of micro-mixing in a novel impinging streams reactor

Hui HU, Zhiming CHEN, Zhen JIAO

Journal Article

Residence time distribution and modeling of the liquid phase in an impinging stream reactor

Xingjun WANG, Xianhui HU, Lishun HU, Guangsuo YU, Fuchen WANG,

Journal Article

Dehydration of natural gas and biogas streams using solid desiccants: a review

Soheil Bahraminia, Mansoor Anbia, Esmat Koohsaryan

Journal Article

Numerical study of droplet dynamics impinging onto steel plate covered with scale layer

Jan BOHá?EK, Ale? HORáK

Journal Article

Latest research progress for LBE coolant reactor of China initiative accelerator driven system project

Journal Article

An old issue and a new challenge for nuclear reactor safety

F. D’AURIA

Journal Article

Convective mass transfer from a horizontal rotating cylinder in a slot air jet flow

Hongting MA , Dandan MA , Na YANG ,

Journal Article

Impact of roxarsone on the UASB reactor performance and its degradation

Mengchuan Shui, Feng Ji, Rui Tang, Shoujun Yuan, Xinmin Zhan, Wei Wang, Zhenhu Hu

Journal Article

Nitrogen-retaining property of compost in an aerobic thermophilic composting reactor for the sanitary

Fan BAI, Xiaochang WANG,

Journal Article

A new approach for fuel injection into a solar receiver/reactor: Numerical and experimental investigation

M Helal Uddin, Nesrin Ozalp, Jens Heylen, Cedric Ophoff

Journal Article

Advances in the slurry reactor technology of the anthraquinone process for H

Hongbo Li, Bo Zheng, Zhiyong Pan, Baoning Zong, Minghua Qiao

Journal Article

Performance of a hybrid anaerobic-contact oxidation biofilm baffled reactor for the treatment of decentralized

Minmin LIU,Ying ZHAO,Beidou XI,Li’an HOU,Xunfeng XIA

Journal Article

Nitrifying population dynamics in a redox stratified membrane biofilm reactor (RSMBR) for treating ammonium-rich

Rongchang WANG, Xinmin ZHAN, Yalei ZHANG, Jianfu ZHAO

Journal Article

The Status and Prospects of Fast Reactor Technology Development in China

Xu Mi

Journal Article

Dynamic simulation of a space gas-cooled reactor power system with a closed Brayton cycle

Journal Article