The Experts below are selected from a list of 7095 Experts worldwide ranked by ideXlab platform
Chengqian Wang - One of the best experts on this subject based on the ideXlab platform.
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Effects of Structure Parameters on the Hydraulic Performance of the ϕ20 Annular Centrifugal Contactor
Energy Procedia, 2013Co-Authors: Shuo Cao, Wuhua Duan, Chengqian WangAbstract:Abstract Annular centrifugal contactors (ACCs) have many advantages and are therefore favored for nuclear processes. Effects of various structure parameters including diameter of the heavy phase weir, length of the Separating Zone, width of annular gap, and the clearance height between the top of the vanes and the bottom of the rotor on the hydraulic performance of the ϕ20 ACC were investigated under 3500 r/min and 4500 r/min of rotor speed. The nominal total flow is increased with increase of length of the Separating Zone below 50 mm and diameter of the heavy phase weir below 12 mm. The effect of the annular gap width on the nominal total flow is complex. The effect of the different clearance height on the nominal total flow is unobvious. These results obtained will guide design and operation of the ϕ20 ACC and other types ACC.
Shuo Cao - One of the best experts on this subject based on the ideXlab platform.
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Effects of Structure Parameters on the Hydraulic Performance of the ϕ20 Annular Centrifugal Contactor
Energy Procedia, 2013Co-Authors: Shuo Cao, Wuhua Duan, Chengqian WangAbstract:Abstract Annular centrifugal contactors (ACCs) have many advantages and are therefore favored for nuclear processes. Effects of various structure parameters including diameter of the heavy phase weir, length of the Separating Zone, width of annular gap, and the clearance height between the top of the vanes and the bottom of the rotor on the hydraulic performance of the ϕ20 ACC were investigated under 3500 r/min and 4500 r/min of rotor speed. The nominal total flow is increased with increase of length of the Separating Zone below 50 mm and diameter of the heavy phase weir below 12 mm. The effect of the annular gap width on the nominal total flow is complex. The effect of the different clearance height on the nominal total flow is unobvious. These results obtained will guide design and operation of the ϕ20 ACC and other types ACC.
Wuhua Duan - One of the best experts on this subject based on the ideXlab platform.
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Hydrodynamic characteristics of 30%TBP/kerosene-HNO 3 solution system in an annular centrifugal contactor
Nuclear Science and Techniques, 2019Co-Authors: Hong-lin Chen, Jianchen Wang, Wuhua Duan, Jing ChenAbstract:Annular centrifugal contactors (ACCs) have many advantages and are recognized as key solvent-extraction equipment for the future reprocessing of spent nuclear fuel (RSNF). To successfully design and operate ACCs for RSNF, it is necessary to understand the hydrodynamic characteristics of the extraction systems in ACCs. The phase ratio (R = Vaq/Vorg, A/O) and liquid holdup volume (V) of the ACC are important hydrodynamic characteristics. In this study, a liquid-fast-separation method was used to systematically investigate the effects of the operational and structural parameters on the V and R (A/O) of a ϕ20 ACC by using a 30%TBP/kerosene-HNO3 solution system. The results showed that the operational and structural parameters had different effects on the V and R (A/O) of the mixing and Separating Zones of the ACC, respectively. For the most frequently used structural parameters of the ϕ20 ACC, when the rotor speed was 3500 r/min, the total flow rate was 2.0 L/h, and the flow ratio (A/O) was 1, the liquid holdup volumes in the mixing Zone and rotor were 8.03 and 14.0 mL, respectively, and the phase ratios (A/O) of the mixing Zone and Separating Zone were 0.96 and 1.43, respectively.
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Effects of Structure Parameters on the Hydraulic Performance of the ϕ20 Annular Centrifugal Contactor
Energy Procedia, 2013Co-Authors: Shuo Cao, Wuhua Duan, Chengqian WangAbstract:Abstract Annular centrifugal contactors (ACCs) have many advantages and are therefore favored for nuclear processes. Effects of various structure parameters including diameter of the heavy phase weir, length of the Separating Zone, width of annular gap, and the clearance height between the top of the vanes and the bottom of the rotor on the hydraulic performance of the ϕ20 ACC were investigated under 3500 r/min and 4500 r/min of rotor speed. The nominal total flow is increased with increase of length of the Separating Zone below 50 mm and diameter of the heavy phase weir below 12 mm. The effect of the annular gap width on the nominal total flow is complex. The effect of the different clearance height on the nominal total flow is unobvious. These results obtained will guide design and operation of the ϕ20 ACC and other types ACC.
Yanbin Wang - One of the best experts on this subject based on the ideXlab platform.
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Jurassic sedimentary features and tectonic settings of southeastern China
Science in China Series D: Earth Sciences, 2009Co-Authors: Liangshu Shu, Yan Wang, Jingeng Sha, Shao-yong Jiang, Yanbin WangAbstract:Two types of the Jurassic basins are distinguished in SE China based on their geodynamic features: the Late Triassic-Early Jurassic post-orogenic basins and the Middle Jurassic intra-continental extensional basins. The Lower Jurassic sequence shows a change from coarse- to fine-grained accumulation, suggesting a gradually deepening depositional environment from river to shore-lake and to deep-water lake. In contrast, the Middle Jurassic accumulation was changed from claystone to conglomerate along the coastal provinces in SE China, indicative of an initial crustal uplift. The Wuyi Mountains have been a paleogeograghic Separating Zone since the Middle Jurassic. The Late Jurassic strata are absent in most areas of SE China. A large-scale bimodal intra-continental rift-type volcanism occurred during the Middle Jurassic along a 40–60 km wide and 200 km long area in western Fujian and southern Jiangxi provinces, which is most likely the strongest volcanism in SE China since the Cambrian. The SHRIMP zircon U-Pb analyses on the rhyolite from the Dongkeng basin in the southern Jiangxi area yield a concord U-Pb age of 160±0.5 Ma, providing an upper age limit for the bimodal volcanic eruption. The analyses of the basin features indicate a change of the depositional environment during the interval from Middle Triassic to Late Triassic from a shallow-sea to an intra-continent in SE China in response to the strong collision between the Yangtze and North China Blocks. Sedimentary structures record a southward direction of Early Jurassic paleo-currents, reflecting that their source areas were to the north side. We propose that the Wuyi region was uplifted as early as Middle Jurassic, followed by a wide E-W-trending extended depression and bimodal volcanism in the western foot of the Wuyi Mountains. Presumably the uplift of the Wuyi domain changed the Middle Jurassic paleogeographic outline and formed the transformational tectonic regime from compression to extension as a tectonic response to the Pacific plate subduction.
Sha Jingeng - One of the best experts on this subject based on the ideXlab platform.
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studies on jurassic sedimentary features and tectonic environment in southeast china
The Journal of Geology, 2011Co-Authors: Sha JingengAbstract:Two types of the Jurassic basin were distinguished in Southeast China,according to their geodynamic features,namely the Late Triassic-Early Jurassic post-orogenic basin and the Middle Jurassic intra-continental extensional basin.The Early Jurassic sequence in Mount Wuyishan showed that the accumulation was changed from coarse-to fine-grained and the depositional environment was gradually turned deeper,from submontane river to shore-lake and to deep lake.As a distinct contrast,the Middle Jurassic accumulation was changed from clay stone to conglomerate in Southeast China coastal area,indicating that a crustal uplift was underway.Mount Wuyishan was a paleo-geographical Separating Zone since Middle Jurassic.The Late Jurassic stratum was absent in the most parts of Southeast China.A large-scale bimodal volcanic eruption was taken place in Middle Jurassic,forming W-Fujian to S-Jiangxi intra-continental rift Zone of 40km to 60km wide and 200km long,which was likely the most intensive volcanism in Southeast China since Cambrian period.The concord age of 160Ma±0.5 Ma was obtained by SHRIMP zircon U-Pb analysis on the rhyolite of Dongkeng basin,providing an upper limit of bimodal eruption time.Basin features indicated that a Middle-Late Triassic depositional environment change occurred from a shallow-sea to an intra-continent in Southeast China,as a tectonic response to the strong collision between the Yangtze and North China blocks.Sedimentary structures recorded a southward direction of Early Jurassic paleo-currents,reflecting their source areas were situated in the north side.The authors proposed that Mount Wuyishan was uplifted as early as Middle Jurassic,followed by a wide E-W trend depression and bimodal volcanism in the western foot of Mount Wuyishan.It was the uplift of the Mount Wuyishan domain that changed the Middle Jurassic paleo-geographic outline and formed the transformational tectonic regime from compression to extension,reflecting a strong tectonic response to the Pacific plate subduction.
