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| 1 | Removal of elemental mercury by iodine-modified rice husk ash sorbents显示文摘Iodine-modified calcium-based rice husk ash sorbents(I2/CaO/RHA) were synthesized and characterized by X-ray diffraction,X-ray fluorescence,and N2 isotherm adsorption/desorption.Adsorption experiments of vapor-phase elemental mercury(Hg0) were performed in a laboratory-scale fixed-bed reactor.I2/CaO/RHA performances on Hg0 adsorption were compared with those of modified Ca-based fly ash sorbents(I2/CaO/FA) and modified fly ash sorbents(I2/FA) .Effects of oxidant loading,supports,pore size distribution,iodine impregnation modes,and temperature were investigated as well to understand the mechanism in capturing Hg0.The modified sorbents exhibited reasonable effciency for Hg0 removal under simulated flue gas.The surface area,pore size distribution,and iodine impregnation modes of the sorbents did not produce a strong effect on Hg0 capture effciency,while fair correlation was observed between Hg0 uptake capacity and iodine concentration.Therefore,the content of I2 impregnated on the sorbents was identified as the most important factor influencing the capacity of these sorbents for Hg0 uptake.Increasing temperature in the range of 80-140°C caused a rise in Hg0 removal.A reaction mechanism that may explain the experimental results was presumed based on the characterizations and adsorption study. | Pengfei Zhao,Xin Guoff,Chuguang Zheng State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan 430074,China | 2010 | Journal of Environmental Sciences2010，22，10： | 15 |
| 2 | Review of soot measurement in hydrocarbon-air flames显示文摘Soot,which is produced in fuel-rich parts of flames as a result of incomplete combustion of hydrocarbons,is the No.2 contributor to global warming after carbon dioxide.Developing soot measurement techniques is important to understand soot formation mechanism and control soot emission.The various soot measurement techniques,such as thermophoretic sampling par-ticles diagnostics followed by electron microscopy analysis,thermocouple particle densitometry,light extinction,laser-induced incandescence,two-color method,and emission computed tomography,are reviewed in this paper.The measurement principle and application cases of these measurement methods are described in detail.The development trend of soot measurement is to realize the on-line measurement of multi-dimensional distributions of temperature,soot volume fraction,soot particle size and other parameters in hydrocarbon-air flames.Soot measurement techniques suitable for both small flames in laboratories and large-scale flames in industrial combustion devices should be developed.Besides,in some special situations,such as high-pressure,zero gravity and micro-gravity flames,soot measurement also should be provided. | LOU Chun,CHEN Chen,SUN YiPeng&ZHOU HuaiChun State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan 430074,China | 2010 | Science China(Technological Sciences)2010，53，8： | 13 |
| 3 | Photocatalytic energy storage ability of TiO_2-WO_3 composite prepared by wet-chemical technique显示文摘TiO2-WO3 hybrid photocatalysts were prepared using wet-chemical technique, and their energy storage performance was characterized by electrochemical galvanostatic method. TiO2 powder was coupled with WO3 powder, which was used as electron pool and the reductive energy could be stored in. As a result, the prepared TiO2-WO3 had good energy storage ability while pure TiO2 showed no capacity and pure WO3 showed quite low performance. The energy storage ability was affected by the crystal structure of WO3 and calcination temperature. The photocatalyst had better capacity when WO3 had low degree of crystallinity, since its loose structure made it easier for electrons and cations to pass through. The photocatalytic energy storage performance was also affected by the molar ratio of TiO2 to WO3. Energy storage capacity was significantly dependent on the composition, reaching the maximum value at TiO2/WO3 1:1 (mol/mol). | Linglin Cao, Jian Yuan, Mingxia Chen, Wenfeng Shangguan Research Center for Combustion and Environment Technology, Shanghai Jiao Tong University, Shanghai 200240, China. | 2010 | Journal of Environmental Sciences2010，22，3： | 5 |
| 4 | Performance and mechanism study for low-temperature SCR of NO with propylene in excess oxygen over Pt/TiO_2 catalyst显示文摘A 0.5 wt.% Pt/TiO2 catalyst was prepared and used for the low-temperature selective catalytic reduction(SCR) of NO with C3 H6 in the presence of excess oxygen.The effects of Pt loading and O2 concentration on Pt/TiO2 catalytic performance for low-temperature SCR were investigated.It was found that optimal Pt loading was 0.5 wt.% and excess O2 favored low-temperature SCR of NOx.The mechanism of low-temperature SCR of NO with C3 H6 was investigated with respect to the behavior of adsorbed species over Pt/TiO2 at 150°C using in situ DRIFTS.The results indicated that surface nitrosyl species(Pt δ+-NO and Ti 3+-NO) and Pt 2+-CO are main reaction intermediates during the interactions of NO,C3 H6 and O2.A simplified NO decomposition mechanism for the low-temperature SCR of NO with C3 H6 was proposed. | Zhixiang Zhang,Mingxia Chen,Zhi Jiang,Wenfeng Shangguan Research Center for Combustion and Environmental Technology,Shanghai Jiao Tong University,Shanghai 200240,China. | 2010 | Journal of Environmental Sciences2010，22，9： | 5 |
| 5 | Element geochemistry and cleaning potential of the No. 11 coal seam from Antaibao mining district显示文摘Based on the analyses of sulfur and 41 other elements in 8 channel samples of the No. 11 coal seam from Antaibao surface mine, Shanxi, China and 4 samples from the coal preparation plant of this mine, the distribution of the elements in the seam profile, their geo-chemical partitioning behavior during the coal cleaning and the genetic relationships between the both are studied. The conclusions are drawn as follows. The coal-forming environment was probably invaded by sea water during the post-stage of peatification, which results in the fact that the contents of As, Fe, S, etc. associated closely with sea water tend to increase toward the top of the seam, and that the kaolinite changes into illite and montmorillonite in the coal-sublayer near the roof. These elements studied are dominantly associated with kaolinite, pyrite, illite, montmorillonite, etc., of which the As, Pb, Mn, Cs, Co, Ni, etc. are mainly associated with sulfides, the Mo, V, Nb, Hf, REEs, Ta etc. mainly with kaolintie, the Mg, Al etc. mainly with epigenetic montmorillonite, and the Rb, Cr, Ba, Cu, K, Hg, etc. mainly with epigenetic illite. The physical coal cleaning is not only effective in the removal of ash and sulfur, but also in reducing the concentra-tion of most major and trace elements. The elements Be, U, Sb, W, Br, Se, P, etc. are largely or partly organically bound showing a relatively low removability, while the removability of the other elements studied is more than 20%, of which the Mg, Mn, Hg, Fe, As, K, Al, Cs, and Cr associ-ated mostly with the coarser or epigenetic minerals show a higher removability than that of ash. The distribution of the elements in the seam profile controls their partitioning behavior to a great degree during the coal cleaning processes. | WANG Wenfeng1, QIN Yong1, SONG Dangyu2, SANG Shuxun1, JIANG Bo1, ZHU Yanming1 & FU Xuehai1 1. College of Resources & Geosciences, China University of Mining and Technology, Xuzhou 221008, China 2. State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China | 2005 | Science China Earth Sciences2005，48，12： | 5 |
| 6 | Experimental and modeling study of NO emission under high CO_2 concentration显示文摘An experimental and numerical study of the NOx formation and reduction process in a designed coal combustion furnace under both traditional air atmosphere and O2/CO2 atmosphere was conducted, in an attempt to explore the chemistry mechanism of the experimentally observed NOx suppression under high CO2 concentration atmospheres. A simplified ‘chemically oriented’ approach, computational fluid dynamics (CFD)-chemical kinetics modeling method, was validated and used to model the experimental process. The high CO2 concentration’s chemical effect on NO reduction has been studied, and the differences in NOx reaction behaviors between O2/CO2 atmosphere and air atmosphere were analyzed by detailed chemical kinetic model. On the basis of investigations through elementary chemical reactions, it can be concluded that high CO2 concentration plays an important role on NOx conversion process during oxy-fuel combustion. Moreover, the dominant reaction steps and the most important reactions for NO conversion under different atmospheres were discussed. Under O2/CO2 atmosphere, the main active sequence for NO reaction includes: NO→N→N2, and the main active path for NO reaction under air atmosphere is through N2→N→NO. | ZHAO Ran, LIU Hao, HU Han, ZHONG XiaoJiao, WANG ZiJian, XU ZhiYing & QIU JianRong State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, 430074, China | 2010 | Science China(Technological Sciences)2010，53，12： | 4 |
| 7 | Technical-economic evaluation of O_2/CO_2 recycle combustion power plant based on life-cycle显示文摘In this study, a detailed technical-economic analysis on a O2/CO2 recycle combustion power plant (Oxy-combustion plant) retrofitted from the existing coal-fired plant (with a capacity of 2×300 MW) in China was carried out by using life cycle assessment (LCA) and life cycle cost (LCC) method. The CO2 emissions, investment cost, cost of electricity and CO2 avoidance cost within the life cycle were calculated respectively. The results showed that the CO2 emission avoidance rate of retrofitted Oxy-combustion plant in the life cycle was about 77.09% without taking account of the CO2 compression; the annual cost increased by 5.9% approximately, the net power decreased by 21.33%, the cost of electricity increased by 34.77%, and the CO2 avoidance cost was about 28.93 USD/t. Considering the compression process of CO2, the avoidance rate of CO2 emission was about 73.35% or so; the annual cost increased by 9.35% approximately, the net power decreased by about 26.70%, the cost of electricity increased by 49.13%, and the CO2 avoidance cost was about 45.46 USD/t. The carbon tax (the CO2 tax) should be more than about 24 USD/t and 34 USD/t under the condition of considering CO2 compression or not, respectively, which is beneficial to promote transformation of existing coal-fired plant for reducing the CO2 emissions. | WANG Yun, ZHAO YongChun, ZHANG JunYing & ZHENG ChuGuang State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China | 2010 | Science China(Technological Sciences)2010，53，12： | 4 |
| 8 | A pilot scale study on co-capture of SO_2 and NOx in O_2/CO_2 recycled coal combustion and techno-economic evaluation显示文摘This paper presents the study on co-capture of SO2 and NOx in O2/CO2 recycled coal combustion in a pilot scale facility with the heat input of 0.3 MW by using high-sulphur lean coal.Detailed comparison of SO2 and NOx emission indexes and desulphurization and denitration rates have been made among three working conditions of O2/CO2,O2/CO2 with limestone injection(O2/CO2+Ca) and O2/RFG(recycled flue gas) with limestone injection(O2/RFG+Ca).Combustion in air was performed as a base case.Results showed that in the O2/RFG with limestone injection,desulphurization and denitration rates could reach up to 96% and 89%,respectively.Limestone injection under the high-CO2 atmosphere caused a significant reduction on SO2 emission and NOx emission as well.This indicated O2/CO2 recycled coal combustion could reduce the investment on the flue gas purification.The techno-economic evaluation indicated that Oxy-combustion technique is not only feasible for CO2 emission control based on existing power plants but is also cost-effective. | ZOU Chun,HUANG ZhiJun,XIONG Jie,GUO Peng & ZHENG ChuGuang Stated Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan 30074,China | 2010 | Science China(Technological Sciences)2010，53，1： | 4 |
| 9 | A fundamental research on combustion chemical kinetic model's precision property显示文摘Uncertainty analysis was used to investigate the precision property of detailed chemical kinetic models.A general-purpose algorithm for assessing and evaluating the impact of uncertainties in chemical kinetic models is presented.The method was also validated through analysis of different kinetic mechanisms applied in the process of modeling NOx emission in methane flame. The algorithm,which provided a basis for further studies,was more efficient and general compared with other methods. | ZHAO Ran ,LIU Hao,HU Han,YAN ZhiQiang,WANG XiaoFeng, KONG FanHai&QIU JianRong State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan 430074,China | 2010 | Science China(Technological Sciences)2010，53，8： | 2 |
| 10 | One-step of CH-A1203/Cu nanocomposite via solution synthesis route 显示文摘 | NASIRI H fabrication combustion Compounds VAHDATI K J ZEBARJAD S M | 2011 | Journal of Alloys and2011，509，： | 1 |
| 11 | Afrox Ltd显示文摘 | Hampton G oxy-fuel technology saves energy in steel industry combustion processes market development | 1985 | International Foundry& Heat Treatment Conference1985，5，： | 1 |
| 12 | Supported palladium - platinum pressure 显示文摘 | Person K Ersson A Manrique A C catalysis for methane combustion at high | 2004 | Catalysis Today2004，100，3： | 1 |
| 13 | Modelling of the relationship betwen trace elements and three species of sulfur in coal显示文摘ModelingoftherelationshipbetwentraceelementsandthrespeciesofsulfurincoalLuXiaohua,ZengHancaiNationalKeyLaboratoryofCoalCom... | Lu Xiao hua, Zeng Han cai National Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China Wei Lu xian Center of Microanalysis, Wuhan University of Automobile Industry, Wuhan, China | 1998 | Journal of Environmental Sciences1998，10，2： | 1 |
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| 15 | Numerical simulation of hetero- by a level set method显示文摘 | Wang X Jackson T L Massa L geneous propellant combustion bustion Theory and Modelling burning ing be- Flame | 2004 | Com-2004，8，2： | 1 |
| 16 | Effect of chemical and thermal behaviour of polyurethane elastomer layered silicate nanocomposites 显示文摘 | Brata M Lindsay C Pans structure on combustion G | 2006 | Polymer Degradation and Stability2006，91，5： | 1 |
| 17 | 5 MW industrial gas turbine显示文摘 | Dalla Betta R A Rostrup-Nielsen T Application of catalytic combustion to a 1 | 1999 | Catalysis Today1999，47，14： | 1 |
| 18 | Part I显示文摘 | Bamford C H Crank J Malan D H The combustion of wood | 1946 | Proceedings of the Cambridge Philosophical Society1946，42，： | 1 |
| 19 | Pyrite transformations显示文摘 | Srinivasachar S Helhle J J Boni AA Mineral behavior during coal combustion 1 | 1990 | Progress in Energy and Combustion Science1990，16，4： | 1 |
| 20 | elemental and spectroscopic features显示文摘 | FERNANDES M B SKJEMSTAD J O JOHNSON B B Characterization of carbonaceous combustion residue:Imorphological | 2003 | Chemosphere2003，51，8： | 1 |
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