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Multiphase surfactant-assisted reaction-separation system in a microchannel reactor

Salah ALJBOUR, Tomohiko TAGAWA, Mohammad MATOUQ, Hiroshi YAMADA

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1,   Pages 33-38 doi: 10.1007/s11705-009-0108-6

Abstract: The Lewis acid-catalyzed addition of trimethylsilyl cyanide to -chlorobenzaldehyde in a microchannelreactor was investigated.The microchannel was integrated to promote both reaction and separation of the biphase system.the organic-aqueous system to enhance the reactivity and to manipulate the multiphase flow inside the microchannelParallel multiphase flow inside the microchannel was obtained, allowing for continuous and acceptable

Keywords： Lewis acid catalysis     multiphase reactions     process intensification     microchannel reactor     green engineering    

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Flow and thermal modeling of liquid metal in expanded microchannel heat sink

Frontiers in Energy   Pages 796-810 doi: 10.1007/s11708-023-0877-5

Abstract: Liquid metal-based microchannel heat sinks (MCHSs) suffer from the low heat capacity of coolant, resultingThe flow and thermal modeling of expanded microchannel heat sink (E-MCHS) were analyzed by both using

Keywords： liquid metal cooling     heat sink     expanded microchannel     flow and thermal modeling    

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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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Transient process of methane-oxygen diffusion flame-street establishment in a microchannel

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 988-999 doi: 10.1007/s11708-021-0755-y

Abstract: “Flame-street” is an interesting diffusion flame behavior in which a series of flame-segments is separately distributed along the mixing layer in a narrow channel. This experimental phenomenon was experimentally and numerically investigated with the focus on the steady-state, thermo-chemical flame structures in previous literature. In the present paper, the dynamic formation process of a methane-oxygen diffusion flame-street structure was simulated with a reacting flow solver developed based on the open-source framework OpenFOAM. By imposing a certain amount of ignition-energy near the channel outlet, a reaction-kernel was formed and bifurcated. Subsequently, three separate flames were consecutively generated from this kernel and propagated within the channel. The whole process was completed within 15 ms and all the discrete flames were eventually in a steady-state. Interestingly, different propagation features were observed for the three flame segments: The leading flame experienced a flame shape/type change from a tribrachial structure in its fast-propagating phase to a long, trailing diffusion tail after being anchored to the inlet. The successive flame had a much lower propagation speed, keeping its two wing-like (fuel-lean premixed and fuel-rich premixed) structure while moving toward its stabilization location, which was approximately in the middle of the channel. The last flame, after the ignition source was turned-off, was immediately convected a bit downstream, and eventually featured a similar two-branch-like structure as the second one. Moreover, chemical insights for the premixed and diffusion branches of the leading flame were also provided with the change of significance of some key elementary reactions focused on, in order to attain a detailed profiling of the flame-type transition. This paper is a first-ever one discussing the transient formation of flame-streets in literature and is believed to be useful for obtaining a comprehensive understanding of this unique flame characteristics from a dynamic point of view.

Keywords： micro-combustion     flame-street     diffusion flame     mixing layer     flame propagation speed    

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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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Analysis of radiation heat transfer and temperature distributions of solar thermochemical reactor for

Bachirou GUENE LOUGOU, Yong SHUAI, Xiang CHEN, Yuan YUAN, Heping TAN, Huang XING

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 480-492 doi: 10.1007/s11708-017-0506-2

Abstract: This paper investigated radiation heat transfer and temperature distributions of solar thermochemical reactorreflection based radiation scattering, and carrier gas flow inlet velocity that would greatly affect the reactorThe fvDOM approximation was used to obtain the radiation intensity distribution along the reactor.The results indicated that the reactor temperature difference between the P1 approximation and the fvDOMincident radiation flux distribution had a strong impact on the temperature distribution throughout the reactor

Keywords： solar thermochemical reactor     incident radiation flux     temperature distribution     radiation absorptivity    

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Sludge reduction during brewery wastewater treatment by hydrolyzation-food chain reactor system

LI Lijie, YANG Shuo, WANG Qunhui, LI Xuesong

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 1,   Pages 32-35 doi: 10.1007/s11783-008-0025-9

Abstract: During brewery wastewater treatment by a hydrolyzation-food chain reactor (FCR) system, sludge was recycled

Keywords： FCR     interaction     antagonism     oxidation     brewery wastewater    

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Title Author Date Type Operation

Multiphase surfactant-assisted reaction-separation system in a microchannel reactor

Salah ALJBOUR, Tomohiko TAGAWA, Mohammad MATOUQ, Hiroshi YAMADA

Journal Article

Flow and thermal modeling of liquid metal in expanded microchannel heat sink

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

Transient process of methane-oxygen diffusion flame-street establishment in a microchannel

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

Analysis of radiation heat transfer and temperature distributions of solar thermochemical reactor for

Bachirou GUENE LOUGOU, Yong SHUAI, Xiang CHEN, Yuan YUAN, Heping TAN, Huang XING

Journal Article

Sludge reduction during brewery wastewater treatment by hydrolyzation-food chain reactor system

LI Lijie, YANG Shuo, WANG Qunhui, LI Xuesong

Journal Article