State Power Environmental Protection Research Institute

Nanjing, China

State Power Environmental Protection Research Institute

Nanjing, China

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Xie C.-Z.,South China University of Technology | Zhang Y.,South China University of Technology | Hao Y.-P.,South China University of Technology | Fan J.-B.,China Electric Power Research Institute | Yao Z.-Q.,State Power Environmental Protection Research Institute
Gaodianya Jishu/High Voltage Engineering | Year: 2010

Wind tunnel test, air flow field test and numerical simulation were used to study pollution deposit of ±800 kV UHV composite insulators. The result indicates that the flow field characteristics of the composite insulators are better than ceramic insulator, Three kinds of composite insulators are excellent aerodynamic flow pattern, In which #0 sample is the best.


Gao M.-S.,Nanjing Southeast University | Wang S.-H.,Nanjing Southeast University | Wang X.-M.,State Power Environmental Protection Research Institute | Guo M.-C.,Shanghai Huolin Engineering Plastics Co.
Advanced Materials Research | Year: 2012

Based on the volume average method, gas-liquid two-phase flow CFD model is established to describe the random packing column in seawater desulfurization. The fluid velocity and porosity distribution were obtained by calculation. Based on the experimental research with three different filler, the dry and wet loss curves which describes gas flow with in each packed bed are obtained, calculations results of pressure loss and experimental results are well consistent. Analyzing the seawater velocity vector in packed columns and velocity profile of the section on the middle of the packed tower, a significant "wall flow" phenomena was found. There is an accumulation trend near the wall along the direction of the liquid flow, and the wall flow becomes much more serious. As can be seen from the chart that the porosity distribution on the radial direction near the wall is significantly higher than it is at the middle area, which is the reason for the formation of wall flow. © (2012) Trans Tech Publications, Switzerland.


Gao M.-S.,Nanjing Southeast University | Wang S.-H.,Nanjing Southeast University | Wang X.-M.,State Power Environmental Protection Research Institute | Guo M.-C.,Shanghai Huolin Engineering Plastics Co.
Xiandai Huagong/Modern Chemical Industry | Year: 2011

With the volume average method, gas-liquid two-phase flow CFD model is established to describe seawater desulfulrization in random packing column. Based on the two-film theory, the average volumetric mass transfer model is established. By numerical calculation, the flow velocity, porosity distribution, pressure distribution and desulfurization efficiency of different liquid/gas ratio are obtained. Pressure loss and desulfurization efficiency are compared with experimental data, the prediction results and experimental results are well consistent, which is exactly the same trend. Combination of seawater velocity vector in packed columns and the velocity profile of the section on the middle high of the paced tower, it is found there is a significant 'wall flow' phenomena, and there is a accumulation trend near the wall along the direction of the liquid flow, and the wall flow becomes much more serious. According to the chart of the three kinds of filler porosity distribution on the radial direction, it can be seen that porosity near the wall is significantly higher than that of the middle region, it is stated that this is the reason for the formation of wall flow.


Gao M.-S.,Nanjing Southeast University | Wang S.-H.,Nanjing Southeast University | Wang X.-M.,State Power Environmental Protection Research Institute
Dongli Gongcheng Xuebao/Journal of Chinese Society of Power Engineering | Year: 2010

Experimental tests were performed in a 70 mm glass column by respectively taking Raschig ring and activated-carbon as the filler, so as to study the influence of filler category, inlet SO2 concentration and the filler height on both the desulfurization efficiency and SO3 residual ratio. Results show that under same working conditions, when activated-carbon is taken as the filler, the desulfurization efficiency is obviously higher and the SO3 2- residual ratio in the discharge liquid remarkably lower than that Raschig ring is used, which proves the activated-carbon filler to be catalytic in seawater desulfurization; When Raschig ring is taken as the filler, the higher the inlet SO2 concentration, the lower the desulfurization efficiency will be; whereas when activated-carbon is taken as the filler, the desulfurization efficiency at an inlet SO2 concentration of 10-3 is slightly higher than that of 5 × 10-4, indicating that the activated-carbon catalytic oxidation occurs simultaneously with seawater desulfurization. The desulfurization efficiency corresponding to higher SO2 concentration is contrarily higher.


Gao M.-S.,Nanjing Southeast University | Wang S.-H.,State Power Environmental Protection Research Institute | Wang X.-M.,State Power Environmental Protection Research Institute | Guo M.-C.,Shanghai Huolin Engineering Plastics Co.
Cleaner Combustion and Sustainable World - Proceedings of the 7th International Symposium on Coal Combustion | Year: 2012

By the volume average method, gas-liquid two-phase flow CFD and CHT model is established to describe the random packing column in seawater desulfurization. By numerical calculation, the flow velocity, porosity distribution, pressure distribution and temperature distribution of seawater are obtained. Pressure loss and the outlet temperature of seawater are compared with experimental data, the prediction results and experimental results are well consistent, is exactly the same trend. Analyzing the results of calculation, a significant "wall flow" phenomena was found, and the reason of its formation is that the porosity of filler near the wall is significantly higher than in the middle region. Analyzing the distribution of seawater temperature, it is found that the distribution of seawater temperature is more uniform on the top of column, the seawater temperature near the wall fluctuated and were gradually more uniform towards the center of the column. Along the direction of the column from top to bottom, the seawater temperature gradually decreased, and the degree of fluctuations gradually reduced and basically does not change at half of the column, which indicated that the heat exchange between the gas and liquid has been basically completed. © Tsinghua University Press, Beijing and Springer-Verlag Berlin Heidelberg 2012.


Pan W.,Hohai University | Liu X.,State Power Environmental Protection Research Institute | Nie D.,Beijing Wanglian HVDC Engineering Technology Co | Chen J.,Guodian Nanjing Automation Co.
Dianli Zidonghua Shebei/Electric Power Automation Equipment | Year: 2011

According to the basic insulation coordination method of UHVDC converter station and the requirements of engineering, a design & calculation software is developed for it with Excel and its VBA editor, including different functions, such as the selection of arrester arrangement scheme, modification and storage of parameters, calculation of insulation level, inquiry of arrester characteristic curves, etc. It is used in the design and calculation of insulation coordination for a ±800 kV UHVDC converter station. Case study shows that it is flexible, fast, accurate, convenient, user-friendly and adaptable.


Liu Y.,CAS Yantai Institute of Coastal Zone Research | Xu Z.,State Power Environmental Protection Research Institute | Duffy R.,CAS Yantai Institute of Coastal Zone Research | Chen W.,Institute of Chemical Defence | And 3 more authors.
European Journal of Soil Biology | Year: 2011

Stable isotopic characteristics of plant water represent an integrated response of root systems to water sources with different isotopic signatures. Analysis of these signatures can help to identify many ecological processes involved in the uptake, transport and utilization of different water sources. In August 2003, we collected soil water samples throughout the soil profile from a subalpine shrub ecosystem in Wolong Nature Reserve, West China, along with stem water samples from the two dominant shrub species, Quercus aquifolioides and Salix luctuosa. Stable isotope contents of the different water samples were determined in conjunction with rootlet biomass distribution of each species and soil water content throughout the soil profile. Results indicated that these subalpine non-phreatophytic shrubs utilized soil water primarily from the top 30 cm of the soil profile. Water uptake patterns were significantly positively correlated with rootlet biomass distribution as well as the soil water content profile. Hence, the two shrubs could play an important role in keeping rainwater from entering river channels quickly, thereby reducing risk of flooding. © 2011.


Sun F.-R.,State Power Environmental Protection Research Institute | Yan C.-Q.,Harbin Engineering University | Gu H.-F.,Harbin Engineering University
Yuanzineng Kexue Jishu/Atomic Energy Science and Technology | Year: 2011

The working principle of density lock was introduced in this paper, and the experimental loop was built so that researches on working performance of density lock in the system were done at steady-state operation and pump trip conditions. The results show that at steady-state operation conditions, density lock can keep close in a long run, which will separate passive residual heat removal circuit from primary circuit. As a result, passive residual heat removal circuit is in the non-operating conditions, which does not influence normal operation of reactors. At the pump trip conditions, density lock can be automatically opened quickly, which will make primary and passive residual heat removal system communicated. The natural circulation is well established in the two systems, and is enough to ensure removal of residual heat.


Li Y.,Harbin Engineering University | Yan C.-Q.,Harbin Engineering University | Sun F.-R.,State Power Environmental Protection Research Institute | Sun L.-C.,Harbin Engineering University
Yuanzineng Kexue Jishu/Atomic Energy Science and Technology | Year: 2011

Aiming at the temperature rising in the secondary side of the passive residual heat removal heat exchanger (PRHR HX) at initial operating stage, experiments on the heat transfer of vertical tube bundle immerged in an elevated tank during the heating up period were performed. The results show that in the early stage of experiments, heat is transfered by single-phase natural convection due to the large subcooling of water. The water temperature rises gradually which leads to a thermal stratification phenomenon in the tank and the heat transfer capability decreases with the water temperature increasing. As the subcooling decreasing, the heat transfer mechanism transforms from single-phase convection to subcooling boiling gradually. After water reaches the saturation temperature, saturated pool boiling is the primary mechanism of heat transfer. Adopting Churchill & Chu correlation, the natural convection heat transfer coefficient was separated from the total heat transfer coefficient. The proportion of single-phase natural convection and subcooling boiling at different heat transfer stages was analyzed. This work provides certain directive significance to the design of PRHR HX.


PubMed | State Power Environmental Protection Research Institute
Type: Journal Article | Journal: Huan jing ke xue= Huanjing kexue | Year: 2011

To sample and test mercury emission characteristics in different power plants, six representative coal-fired power plants were selected. And based on the data of mercury emission concentration from actual measurement, mercury removal rate and mercury average emission factor of every plant can be calculated, and mercury emission characteristics about every level capacity can be given, so as to provide support and foundation for the mercury control in China. The mercury emission concentration is about 4.72-14.54 microg/m3, mercury removal rate is about 20.89%-70.63%, and mercury average emission factor is about 14.09-56.08 microg/(kW x h). To compare the mercury emission characteristics with mercury emission characteristics from coal-fired power plants in USA, it is shown that the concentration of mercury emission from coal-fired power plants in China is far higher than those in USA, and the mercury removal rate is much lower than removal rate required by American national standard. To get conclusion that mercury average emission factor can come down with installed capacity and power generation load went up. And the function relation have been provided through comprehensive simulation between mercury average emission factor and installed capacity, generation load, mercury content in coal, the environmental protection equipment running level, and so on.

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