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| 1 | Non-uniform distribution of gas-solid flow through six parallel cyclones in a CFB system: An experimental study显示文摘In large-scale circulating fluidized bed (CFB) boilers, it is common to use multiple cyclones in parallel for the capture of solids, assuming that gas-solid flow to be the same in the cyclones. This article presents a study investigating gas-solid flow through six parallel cyclones in a CFB cold test rig. The six cyclones were located asymmetrically on the left and right walls of the riser. Solid volume fraction and particle velocity profiles at the riser outlets and in the horizontal ducts were measured using a fiber optical probe. Cyclone pressure drop and solid circulating rate were measured for each individual cyclone. Measurements showed good agreement as to the non-uniform distribution of the gas-solid flow, which occurred mainly across the three cyclones on one side: the middle cyclones on both sides had higher particle velocities. Conversely, the solid volume fractions, solid fluxes and solid circulating rates of the middle cyclones were lower than those of the other four cyclones. The apparent reason for the flow non-uniformity among the cyclones is the significant flow non-uniformity at the riser outlets. Under typical operating conditions, the solid volume fractions at the riser outlets had a deviation of up to 26% whereas the solid circulating rates at the stand pipes, 7%. These results are consistent with most other studies in the literature. | Xinglong Zhou Leming Cheng Qinhui Wang Zhongyang Luo Kefa Cen | 2012 | Particuology2012，10，2： | 31 |
| 2 | The discovery of the oldest rocks in the Kuluketage area and its geological implications显示文摘The basement rocks in the Kuluketage area are composed predominately of tonalite-trondhjemite-granodiorite rocks, and occured mainly in Xinger and Korla. U-Pb dating of TTG gneiss near Korla yielded a late Neoarchean weighted mean 207Pb/206Pb age of 2.65 Ga, which is the oldest published age for the TTG rocks in the Kuluketage area and thus suggests that Archean terrane in the area was formed in the late Neoarchean. The Korla gneiss is much younger than the TTG rocks in the northern Altyn Tagh, eastern Tarim Craton, indicating that the oldest terrane of the Tarim Craton was exposed probably in the northern Altyn Tagh. Until late Neoarchean, the Tarim continent extends to the Kuluketage area and finally had generated a relatively large uniform Archean basement within the craton. Zircon Hf isotopic analyses of the TTG gneiss give low εHf(t) values (-5 to 1) with Paleoarchean to Mesoarchean two-stage model ages (TDM2) between 3.0 and 3.3 Ga, suggesting that the basement rocks in the northern Tarim Craton were derived dominately from partial melting of Paleoarchean to Mesoarchean juvenile crustal material. The Hf model ages, therefore, indicate that no continent crust older than 3.3 Ga existed in the Kuluketage area. | LONG XiaoPing YUAN Chao SUN Min XIAO WenJiao ZHAO GuoChun ZHOU KeFa WANG YuJing HU AiQin | 2011 | Science China Earth Sciences2011，54，3： | 16 |
| 3 | Frequency comparative study of coal-fired fly ash acoustic agglomeration显示文摘Particulate pollution is main kind of atmospheric pollution.The fine particles are seriously harmful to human health and environment.Acoustic agglomeration is considered as a promising pretreatment technology for fine particle agglomeration.The mechanisms of acoustic agglomeration are very complex and the agglomeration efficiency is affected by many factors.The most important and controversial factor is frequency.Comparative studies between high-frequency and low-frequency sound source to agglomerate coal- fired fly ash were carried out to investigate the influence of frequency on agglomeration efficiency.Acoustic agglomeration theoretical analysis,experimental particle size distributions (PSDs) and orthogonal design were examined.The results showed that the 20 kHz high-frequency sound source was not suitable to agglomerate coal-fired fly ash.Only within the size ranging from 0.2 to 0.25 μm the particles agglomerated to adhere together,and the agglomerated particles were smaller than 2.5 μm.The application of low-frequency (1000-1800 Hz) sound source was proved as an advisable pretreatment with the highest agglomeration efficiency of 75.3%,and all the number concentrations within the measuring range decreased.Orthogonal design L16 (4) 3 was introduced to determine the optimum frequency and optimize acoustic agglomeration condition.According to the results of orthogonal analysis,frequency was the dominant factor of coal-fired fly ash acoustic agglomeration and the optimum frequency was 1400 Hz. | Jianzhong Liu Jie Wang Guangxue Zhang Junhu Zhou Kefa Cen | 2011 | Journal of Environmental Sciences2011，23，11： | 13 |
| 4 | LES investigation of swirl intensity effect on unconfined turbulent swirling premixed flame显示文摘A finite reaction rate model is presented as a closure of large eddy simulation(LES) to numerically study an open premixed methane/air swirling flame. The resultant model is firstly validated by comparing with reported data and then employed to investigate the effect of swirling intensity on flow field, flame characteristics and combustion instability of the swirling flame. Three different swirl numbers are considered. The LES results show that as swirling intensity increases, the vortex entrainment and micro-mixing are enhanced, leading to more lean equivalent ratios at flame front; consequently, higher swirling number causes lower flame temperatures and slower CO oxidization; for all simulated swirl numbers,flame fronts are completely located out of the recirculation zones and anchored at the inner surface of the annular swirling steams; swirl number has a crucial effect on swirling flame extension toward radial and tangential dimensions and then significantly affects streamwise flame length, which is a great influencing factor on combustion instability; vortex-induced disturbance on flame in streamwise plays a critical role in combustion instability. | Zhihua Wang Yanwei Xu Yu L Zhijun Zhou Junhu Zhou Kefa Cen | 2014 | Chinese Science Bulletin2014，59，33： | 6 |
| 5 | Premixed jet flame characteristics of syngas using OH planar laser induced fluorescence显示文摘Lean premixed flame characteristics of several typical low calorific value (LCV) syngases (basis CO/H2/CH4/CO2/N2),including bituminous coal,wood residue,corn core,and wheat straw gasification syngas,were investigated using OH planar laser induced fluorescence (PLIF) technology.OH radical distributions within the turbulent flame were measured for different turbulence intensities.Flame structures of syngases were analyzed and characterized with respect to burnt and unburnt regions,flame curvature (sharp cusp),local extinction (holes and penetration),OH reaction layer thickness,wrinkling,and other features,with OH-PLIF instantaneous images and statistical analysis.Results show that H2 content,LCV,and turbulence intensity are the most effective factors influencing the OH radical intensity and thickness of OH radical layers.The bituminous coal gasification syngas with relatively higher LCV and H2 content tends to burn out easily.Through changes in thickness of the OH radical layers and signal intensities,the reaction layer can be compressed by intensifying turbulence and thereby the combustion processes of syngas. | YANG Li WANG ZhiHua ZHU YanQun LI ZhongShan ZHOU JunHu HUANG ZhenYu CEN KeFa | 2011 | Chinese Science Bulletin2011，56，26： | 5 |
| 6 | Application of cluster analysis to geochemical compositional data for identifying ore-related geochemical anomalies显示文摘 | Shuguang ZHOU Kefa ZHOU Jinlin WANG Genfang YANG Shanshan WANG | 2018 | Frontiers of Earth Science2018，12，3： | 3 |
| 7 | Atmospheric emission characterization of a novel sludge drying and co-combustion system显示文摘A novel system combining sludge drying and co-combustion with coal was applied in disposing sludge and its atmospheric emission characteristics were tested. The system was composed of a hollow blade paddle dryer, a thermal drying exhaust gas control system,a 75 tons/hr circulating fluidized bed and a flue gas cleaning system. The emissions of NH3, SO2, CH4and some other pollutants released from thermal drying, and pollutants such as NOx, SO2etc. discharged by the incinerator, were all tested. Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans(PCDD/Fs) in the flue gas from the incinerator were investigated as well. The results indicated that the concentrations of NOx and SO2in the flue gas from the incinerator were 145 and 16 mg/m3, respectively,and the I-TEQ concentration of 2,3,7,8-substitued PCDD/Fs was 0.023 ng I-TEQ/Nm3. All these values were greatly lower than the emission standards of China. In addition, there was no obvious odor in the air around the sludge dryer. The results demonstrated that this drying and co-combustion system is efcient in controlling pollutants and is a feasible way for large-scale treatment of industrial sludge and sewage sludge. | Shengyong Lu Liqin Yang Fa Zhou Fei Wang Jianhua Yan Xiaodong Li Yong Chi Kefa Cen | 2013 | Journal of Environmental Sciences2013，25，10： | 3 |
| 8 | Study on RS-and GIS-based ecological capital assessment in arid areas显示文摘生态的大写的评价当前是生态学,资源经济,环境经济和生态的经济的学科交差的领域里的重要研究内容之一。为了科学地估计生态的资本,增加到决策人在经济开发考虑生态的费用,并且为在干旱区域的持续经济开发也是必要的。基于风景生态学的理论,在这篇论文生态的资本在干旱区域珍视的per 单位区域被使用 Landsat TM 数据, CBERS 卫星数据,气象学的数据, MODIS 卫星数据和另外的生态的数据研究,并且 RS --并且在干旱区域估计生态的大写的价值的官方补给底的模型被开发。而且基于测量地的数据,在在威信河盆的生态的大写的评价以后的案例研究,在 2003 的 Xinjiang 被执行。盆被划分成 4 个生态的大写的区域以便份量上计算生态系统的生态的大写的价值,分析生态的资本的空间分发,并且制定生态的资本的空间分发的地图。结果证明在在 2003 的威信河盆的生态系统的全部的生态的大写的价值是 1.494 54 癮 吗?? | ZHOU Kefa CHEN Xi ZHOU Huarong ZHANG Qing ZUO Qiting ZHANG Haibo YAN Jinfeng CHEN Chuan | 2006 | Chinese Science Bulletin2006，51，A01： | 3 |
| 9 | Quantitative assessment and analysis on the dynamic change of ecological capital in arid areas显示文摘生态的资本是生物资源的直接价值和生态系统的生态的服务功能价值的求和。在 RS , GPS 和 GIS 的支持下面,在这篇论文,估计生态的资本的 基于RS 的量的测量模型每由包括 Landsat TM 数据使用生态的参数统一区域基于生态的资本的价值上的传统的生态学理论和研究被开发, CBERS 卫星数据,气象学的数据, MODIS 卫星数据,陆地封面数据和测量地的数据。在在 1990, 1995 和 2003 的 Changji Hui 自治的府的生态的资本的空间与时间的分发上的案例研究被执行,并且在府的生态的资本的动态变化被测量并且与 GDP 相比。在学习区域的生态的资本的空间分发的地图被制定,并且生态的资本的空间分发的特征被分析。结果证明在在 1990, 1995 和 2003 的府的生态的资本的价值是 1.473 68 吗?? | CHEN Xi ZHANG Qing ZHOU Kefa SUN Li | 2006 | Chinese Science Bulletin2006，51，A01： | 2 |
| 10 | Density Functional Study of NO Desorption from Oxidation of Nitrogen Containing Char by O2显示文摘 | Xiuxia Zhang Zhijun Zhou Junhu Zhou Jianzhong Liu Kefa Cen | 2012 | Combustion Science and Technology2012，，4： | 2 |
| 11 | Effects of the physical and chemical properties of petroleum coke on its slurryability显示文摘In this study, the effects of particle size distribution (PSD), chemical composition and pore structure of petroleum coke on the slurryability of petroleum coke water slurry (PCWS) were investigated. Four petroleum cokes were studied, and they showed completely different slurryability. The solid concentration at fixed viscosity (i.e. apparent viscosity of 1000 mPa) (SCFV) of four PCWSs is different from each other, with the highest value of 70.9%, and lowest of 62.1%. The apparent viscosity of the four PCWSs all increased with an increase of the solid concentration. The results showed that the PSD, inherent moisture content, specific surface area and pore volume of petroleum coke were key factors to affect the slurryability. The slurryability was enhanced with increasing PSD range and particle packing fraction, and with decreasing inherent moisture content, specific surface area and pore volume. | Gao Fuyan Liu Jianzhong Wang Chuancheng Zhou Junhu Cen Kefa | 2012 | Petroleum Science2012，9，2： | 2 |
| 12 | Simultaneous removal of NO x , SO 2 and Hg in nitrogen flow in a narrow reactor by ozone injection: Experimental results显示文摘 | Zhihua Wang Junhu Zhou Yanqun Zhu Zhengcheng Wen Jianzhong Liu Kefa Cen | 2007 | Fuel Processing Technology2007，，8： | 2 |
| 13 | Direct numerical simulation of hydrogen turbulent lifted jet flame in a vitiated coflow显示文摘The direct numerical simulation (DNS) method with 16 steps detailed chemical kinetics was applied to a lifted turbulent jet flame with H2/N2 fuel issuing into a wide hot coflow of lean combustion products,at temperature of 1045 K and low oxygen concentrations. The chemical reactions were handled by the library function of CHEMKIN which was called by the main program in every time step. Parallel com-putational technology based on message passing interface method (MPI) was used in the simulation. All the cases were run by 12 CPUs on a high performance computer system. Faver-averaged DNS re-sults were obtained by long time averaging the transient profile and compared with the experimental data. The roll-up and evolution of the vortices in jet flame were well captured. The vortices in the same rotating direction attracted each other and those in different rotating directions repulsed each other. Through complex interactions between vortices,the original symmetrical vortex structure could be converted into nonsymmetrical and more complex structures by combination,distortion and splitting of the vortices. The transient profiles of H,OH and H2O mass fraction at 5.76 ms showed the flame structure in jet flame,especially the autoignition regions clearly. The lift-off height was about 9 d―11 d,in agreement with the experimental observation. At the corner point of the flame sheet indicated by OH and H profiles,the combustion was always enhanced by the flame curvature and extended resident time. The profiles of turbulence intensities show that the flames were diffused from the original two outside flame sheets into the core. The DNS results can be considered in developing more accurate and more universal turbulence models. | WANG ZhiHua FAN JianRen ZHOU JunHu CEN KeFa | 2007 | Chinese Science Bulletin2007，52，15： | 2 |
| 14 | Influence of Hydrothermal Dewatering on the Gasification Characteristics of Typical Chinese Lignites显示文摘 | GE Lichao ZHANG Yanwei YING Zhi WANG Zhihua ZHOU Junhu CEN Kefa | 2013 | 中国电机工程学报2013，33，32： | 2 |
| 15 | Corridor effect of the spatial changes of landscape patterns in arid areas:A case study of the river corridor areas in the middle and lower reaches of Tarim River显示文摘在 Tarim Riverare 的中间、更低的活动范围的河走廊区域在 Ruoqiang 从 Qara 水库 inYuli 县沿着河节由传统的绿走廊统治了到泰泰马·莱克县,它在 Tarim 河分水岭在社会、经济的发展起一个重要作用与一极其重要的生态的功能。对水路垂直的缓冲区地区从水路在 5-kminterval 开始沿着两个河边被定义(10 km 更宽) 用缓冲区地区分析的方法。每个缓冲区地区的风景模式索引被计算,并且主要风景模式的索引被分析以便在风景和补丁层次上揭示放射的效果和河走廊的特征。放射的宽度通常是在学习区域的 30 km 的结果表演,和罐头直到在潜水艇的 50-70 km -- 区域 FG1 因为学习区域位于二排水盆,与在他们之间的一个生态的空隙的地区。树林和沼泽地的 Thelandscapes 通常在 10 km 缓冲区地区以内被散布(它意味着缓冲区地区是离开水路的 5 km;一样此后) 沿着两个河边。而且,缓冲区地区越靠近到水路,补丁密度和最大的补丁索引是越多 higher。在为学习区域的生态、环境的新生,河走廊的生态的效果的程度必须充分被考虑,并且工程必须科学地并且讲道理地被计划并且设计。 | ZHOU Huarong XIAO Duning ZHOU Kefa | 2006 | Chinese Science Bulletin2006，51，A01： | 2 |
| 16 | Sulfur removal at high temperature during coal combustion in furnaces:a review显示文摘 | Jun Cheng Junhu Zhou Jianzhong Liu Zhijun Zhou Zhenyu Huang Xinyu Cao Xiang Zhao and Kefa Cen | | 0，，05： | 1 |
| 17 | Modeling and optimization of the NOx emission characteristics of a tangentially fired boiler with artificial neural networks显示文摘 | Hao Zhou Kefa Cen Jianren Fan | 2003 | Energy2003，，1： | 1 |
| 18 | Direct numerical simulation of ozone injection technology for NOx control in flue gas显示文摘 | Wang Zhihua Zhou Junhu Cen Kefa | 2006 | Energy & Fuels2006，20，6： | 1 |
| 19 | Optimizing pulverized coal combustion performance based on ANN and GA显示文摘 | Zhou Hao Qian Xinping Cen Kefa | | 0，，1： | 1 |
| 20 | Sulfur removal at high temperature during coal combustion in furnaces: a review显示文摘 | Jun Cheng Junhu Zhou Jianzhong Liu Zhijun Zhou Zhenyu Huang Xinyu Cao Xiang Zhao Kefa Cen | 2003 | Progress in Energy and Combustion Science2003，，5： | 1 |
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