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| 1 | Progress and recent trend in MILD combustion显示文摘Moderate or intense low oxygen dilution(MILD)combustion plays a significant role in the mitigation of combustion-generated pollutants and greenhouse gases whilst meeting thermal efficiency needs.However,due to the lack of the fundamental knowledge on this combustion,there is a misconception that MILD combustion should be established by high preheating of the air,which has limited its application.Our research and development on this combustion has been performed for several years. We have found that the requirements for establishing the MILD combustion are more relaxed than previously.It is also revealed that this combustion of different type,i.e.,non-premixed,partially premixed and fully premixed,can be achieved by firing various fuels(i.e.,gaseous,liquid and solid fuels).It is suggested that the application of the MILD combustion can be expanded significantly.The present review summarizes the progress and recent trend made in the R&D of this combustion and recommends further fundamental studies for improving our knowledge and widening its applications. | LI PengFei MI JianChun DALLY B B WANG FeiFei WANG Lin LIU ZhaoHui CHEN Sheng ZHENG ChuGuang | 2011 | Science China(Technological Sciences)2011，54，2： | 31 |
| 2 | 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 |
| 3 | Study on mechanism of mercury oxidation by fly ash from coal combustion显示文摘To understand the interaction of fly ash and mercury, systematic experiments on mercury oxidation in single flue gas composition are conducted on a fixed bed reactor system, the desorption rate and speciation of mercury are valuated. The results indicate that fly ash itself can significantly promote elemental mercury oxidation. A classification of fly ash activated sites is developed according to the speciation of mercury during adsorption-desorption tests, the reaction mechanism of mercury oxidation by fly ash is proposed. Acid gas can promote mercury oxidation and improve the stability of oxidation product. Lattice oxygen is an important oxidant of mercury oxidation. | ZHAO YongChun ZHANG JunYing LIU Jing DIAZ-SOMOANO Mercedes MARTINEZ-TARAZONA M. Rosa ZHENG ChuGuang | 2010 | Chinese Science Bulletin2010，55，2： | 13 |
| 4 | Integrated removal of NO and mercury from coal combustion flue gas using manganese oxides supported on TiO_2显示文摘A catalyst composed of manganese oxides supported on titania(MnO_x/TiO_2) synthesized by a sol–gel method was selected to remove nitric oxide and mercury jointly at a relatively low temperature in simulated flue gas from coal-fired power plants. The physico-chemical characteristics of catalysts were investigated by X-ray fluorescence(XRF), X-ray diffraction(XRD), and X-ray photoelectron spectroscopy(XPS) analyses, etc. The effects of Mn loading,reaction temperature and individual flue gas components on denitration and Hg^0 removal were examined. The results indicated that the optimal Mn/Ti molar ratio was 0.8 and the best working temperature was 240°C for NO conversion. O_2 and a proper ratio of [NH_3]/[NO]are essential for the denitration reaction. Both NO conversion and Hg^0 removal efficiency could reach more than 80% when NO and Hg^0 were removed simultaneously using Mn0.8 Tiat 240°C.Hg^0 removal efficiency slightly declined as the Mn content increased in the catalysts. The reaction temperature had no significant effect on Hg^0 removal efficiency. O_2 and HCl had a promotional effect on Hg^0 removal. SO2 and NH_3were observed to weaken Hg^0 removal because of competitive adsorption. NO first facilitated Hg^0 removal and then had an inhibiting effect as NO concentration increased without O_2, and it exhibited weak inhibition of Hg^0 removal efficiency in the presence of O_2. The oxidation of Hg^0 on Mn O x/TiO_2 follows the Mars–Maessen and Langmuir–Hinshelwood mechanisms. | Shibo Zhang Yongchun Zhao Zonghua Wang Junying Zhang Lulu Wang Chuguang Zheng | 2017 | Journal of Environmental Sciences2017，29，3： | 11 |
| 5 | Effect of particle inertia on temperature statistics in particle-laden homogeneous isotropic turbulence显示文摘The fluid temperature statistics along particle trajectories is crucial to under- stand the mechanisms of turbulent non-isothermal or reactive fluid-particle flow, especially for the Lagrangian model of non-isothermal particle-laden turbulent flow. In the present study, direct numerical simulations were utilized to generate temperature field statistics in particle-laden incompressible stationary homogeneous isotropic turbulent flows, which is focused on the effect of particle response time on the Lagrangian statistics of the particle and the fluid temperature seen by particles. It shows that, for the particles with τp/τk < 1, the ratio of the fluid intensity seen by particle to fluid temperature intensities deceased as τp/τk increased; while for larger particles (τp/τk > 1), the trend is inversed. For small parti- cles (τp/τk<5), the Lagrangian autocorrelation coefficient of the particle temperature RpT decreases as the particle inertia (τp/τk) increases. The trend is reversed for larger particles. The autocorrelation of fluid temperature along the particle path, RpfT, decreased as the particle inertia increased. And as the particle inertia increased, the autocorrelation coeffi- cient of the fluid temperature seen by particle decreased more rapidly than that of the particle temperature. The mean temperature gradient contributes to the correlation be- tween the particles velocity component and temperature fluctuations in the direction of the gradient. For the particles with τp/τk<1, the magnitude of the correlation coefficient in- creases as the particle inertia increases, while this value is independent of the particle time constant for larger particles. | HE Zhu LIU Zhaohui CHEN Sheng LIU Yaming ZHENG Chuguang | 2006 | Science China(Technological Sciences)2006，49，2： | 8 |
| 6 | Fundamental and Technical Challenges for a Compatible Design Scheme of Oxyfuel Combustion Technology显示文摘Oxyfuel combustion with carbon capture and sequestration(CCS) is a carbon-reduction technology for use in large-scale coal-fired power plants. Significant progress has been achieved in the research and development of this technology during its scaling up from 0.4 MWth to 3 MWth and 35 MWth by the combined efforts of universities and industries in China. A prefeasibility study on a 200 MWe large-scale demonstration has progressed well, and is ready for implementation. The overall research development and demonstration(RD&D) roadmap for oxyfuel combustion in China has become a critical component of the global RD&D roadmap for oxyfuel combustion. An air combustion/oxyfuel combustion compatible design philosophy was developed during the RD&D process. In this paper, we briefly address fundamental research and technology innovation efforts regarding several technical challenges, including combustion stability, heat transfer, system operation, mineral impurities, and corrosion. To further reduce the cost of carbon capture, in addition to the large-scale deployment of oxyfuel technology, increasing interest is anticipated in the novel and nextgeneration oxyfuel combustion technologies that are briefly introduced here, including a new oxygen-production concept and flameless oxyfuel combustion. | Chuguang Zheng Zhaohui Liu Jun Xiang Liqi Zhang Shihong Zhang Cong Luo Yongchun Zhao | 2015 | Engineering2015，1，1： | 7 |
| 7 | Experimental investigation on turbulence modification in a horizontal channel flow at relatively low mass loading显示文摘在一条水平隧道的粒子沉重的流动借助于二阶段的粒子图象 velocimetry (PIV ) 被调查技术。实验在一个雷纳兹数字被执行 6 826 并且流动与二种尺寸, 60 μm 和 110 μm 的聚乙烯祷告被播种。一个人比稍微小,其它比 Kolmogorov 长度规模大。粒子装载是相对低的,与装载比率从 5 × 1 的质量 0 −4 到 4 × 1 从 6 × 1 的 0 −2 和体积部分 0 −7 到 4.8 × 1 0 −5, 分别地。结果证明粒子的存在能戏剧性地甚至在 5 × 1 的最低集体装载比率下面修改骚乱 0 −4 。吝啬的流动与增加粒子尺寸并且集体装载被稀释并且减少。骚乱紧张在担心的所有案例中被提高。随集体装载的增加,紧张在小粒子的情况中以一种复杂方式变化,显示复杂粒子骚乱相互作用;而他们在大粒子的情况中单调地增加。粒子速度和集中也被给。粒子在中心区域落后于液体,但是领进墙区域,和这个趋势为大粒子是更突出的。溪流明智的粒子变化比为粒子的两种尺寸的煤气的变化大,然而,他们有集体装载的变化趋势不是那么清楚的。墙正常变化与增加集体装载增加。他们在 60 μm 粒子盒子中是更小的但是在 110 μm 粒子盒子中更大比那些煤气的阶段。当更大的粒子被他们的自己的惯性更多半统治时,看起来,小粒子跟随液体运动到某些程度。最后,粒子集中的显著不一致的分布被观察,特别为大粒子。粒子的惯性被证明为骚乱修正和粒子行为很重要并且应该因此在水平隧道被考虑。 | Yi Wu Hangfeng Wang Zhaohui Liu Jing Li Liqi Zhang Chuguang Zheng | 2006 | Acta Mechanica Sinica2006，22，2： | 6 |
| 8 | Sulfur evolution in chemical looping combustion of coal with MnFe_2O_4 oxygen carrier显示文摘Chemical looping combustion(CLC) of coal has gained increasing attention as a novel combustion technology for its advantages in CO2 capture. Sulfur evolution from coal causes great harm from either the CLC operational or environmental perspective. In this research, a combined MnFe2O4 oxygen carrier(OC) was synthesized and its reaction with a typical Chinese high sulfur coal, Liuzhi(LZ) bituminous coal, was performed in a thermogravimetric analyzer(TGA)-Fourier transform infrared(FT-IR) spectrometer. Evolution of sulfur species during reaction of LZ coal with MnFe2O4 OC was systematically investigated through experimental means combined with thermodynamic simulation. TGA-FTIR analysis of the LZ reaction with MnFe2O4 indicated MnFe2O4 exhibited the desired superior reactivity compared to the single reference oxides Mn3O4 or Fe2O3, and SO2 produced was mainly related to oxidization of H2S by MnFe2O4. Experimental analysis of the LZ coal reaction with MnFe2O4, including X-ray diffraction and X-ray photoelectron spectroscopy analysis, verified that the main reduced counterparts of MnFe2O4 were Fe3O4 and MnO, in good agreement with the related thermodynamic simulation. The obtained MnO was beneficial to stabilize the reduced MnFe2O4 and avoid serious sintering, although the oxygen in MnO was not fully utilized. Meanwhile, most sulfur present in LZ coal was converted to solid MnS during LZ reaction with MnFe2O4, which was further oxidized to MnSO4. Finally, the formation of both MnS and such manganese silicates as Mn2SiO4 and MnSiO3 should be addressed to ensure the full regeneration of the reduced MnFe2O4. | Baowen Wang Chuchang Gao Weishu Wang Haibo Zhao Chuguang Zheng | 2014 | Journal of Environmental Sciences2014，26，5： | 5 |
| 9 | Exergy life cycle assessment model of “CO_2 zero-emission” energy system and application显示文摘An exergy life cycle assessment(ELCA) model based on life cycle assessment(LCA) and exergy methodology was developed to assess a 2×300 MW coal-fired power plant,and the results indicated that the exergy input in operation phase of power plant accounts for 99.89% of the total input and only 0.11% in construction and decommission phases. Direct and indirect exergy inputs account for 93.03% and 6.97%,respectively. Compared with coal-fired power generation system before carbon emission reduction,exergy input-output ratio of life cycle 'CO2 zero-emission' energy system and exergy efficiency are about 5.563 and 17.97%,respectively,which increases by 62.47% and declines by 11.21% approximately. The model quantifies the energy,resource consumption and pollutant emissions of system life cycle using exergy as the basic physical parameter,which will make the assessment more objective and reasonable. | WANG Yun ZHANG JunYing ZHAO YongChun LI ZhongYuan ZHENG ChuGuang | 2011 | Science China(Technological Sciences)2011，54，12： | 5 |
| 10 | Geochemistry and Modes of Occurrence of Hazardous Trace Elements in the No.11 Coal Seam,Antaibao Surface Mine,Shanxi Province显示文摘Concentrations of seventeen hazardous trace elements including As, Pb, Hg, Se, Cd, Cr, Co, Mo, Mn, Ni, U, V, Th, Be, Sb, Br and Zn in the No.11 coal seam, Antaibao surface mine, Shanxi Province were determined using Instrumental Neutron Activation Analysis (INAA), Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES), Cold-Vapor Atomic Absorption Spectrometry (CV-AAS) and Graphite Furnace Atomic Absorption Spectrometry (GF-AAS). Comparisons with average concentrations of trace elements in Chinese coal show that the concentrations of Hg and Cd in the No. 11 coal seam, Antaibao surface mine are much higher. They may be harmful to the environment in the process of utilization. The variations of the trace elements contents and pyritic sulfur in vertical section indicated that: (a) the concentrations of As, Pb, Mn, and pyritic sulfur decrease from roof to floor; (b) the concentrations of Cr, Zn and Mo are higher in roof, floor and lower in coal seam; (c) the concentration of Br, Sb, and Hg are higher in coal seam and lower in roof and floor; (d) the concentrations of Mo, V, Th and Al vary consistently with the ash yield. Cluster analysis of trace elements, pyritic sulfur, ash yield and major elements, such as Al, Fe, P, Ca shows that: (a) pyritic sulfur, Fe, As, Mn, Ni, Be are closely associated and reflect the influence of pyrite; (b) Mo, Se, Pb, Cr, Th, Co, Ca and Al are related to clay mineral, which is the main source of ash; (c) U, Zn, V, Na, P maybe controlled by phosphate or halite; (d) Hg, Br, Sb and Cd may be mainly organic-associated elements which fall outside the three main groups. The concentration distribution characteristics of trace elements in coal seam and the cluster analysis of major and trace elements showed that the contents of trace elements in the No. 11 coal seam, Antaibao surface mine, are mainly controlled by detrital input and migration from roof and floor. | SONG Dangyu QIN Yong WANG Wenfeng ZHANG Junying ZHENG Chuguang | 2007 | Acta Geologica Sinica(English Edition)2007，81，1： | 4 |
| 11 | 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 |
| 12 | CO_2 Sequestration from flue gas by direct aqueous mineral carbonation of wollastonite显示文摘Emission of carbon dioxide is considered to be the main cause of the greenhouse effect. Mineral carbonation, an important part of the CCS technology, is an attractive option for long-term CO2 sequestration. In this study, wollastonite was chosen as the feedstock and the feasibility of direct aqueous mineral carbonation in the simulated flue gas was investigated via a series of experimental studies carried in a stirred reactor. X-ray diffraction (XRD), X-ray fluorescence spectroscopy (XRF), ion chromatography (IC) and thermal decomposition were used to determine the carbonation conversion. The influences of various factors, including reaction temperature, reaction pressure, solution composition, heat-treatment and particle size, were discussed. Concurrently, the effects of SO2 and NO presented in simulated flue gas were also investigated and a possible mechanism was used to explain the results. Experimental results show that reaction temperature, reaction pressure and particle size can effectively improve the carbonation reaction. Addition of 0.6 M NaHCO3 was also proved to be beneficial to the reaction and heat-treatment is not needed for wollastonite to get a higher carbonation conversion. Compared with carbonation in purified CO2 gas, CO2 sequestration directly from simulated flue gas by mineral carbonation is suggested to have a certain degree of economic feasibility in the conditions of medium and low-pressure. A highest carbonation conversion of 35.9% is gained on the condition of T=150°C, P=40 bar and PS <30 μm in distilled water for 1h. | YAN Heng ZHANG JunYing ZHAO YongChun ZHENG ChuGuang | 2013 | Science China(Technological Sciences)2013，56，9： | 4 |
| 13 | Techno-economic evaluation of oxy-combustion coal-fired power plants显示文摘Increasing attention is being paid to the oxycombustion technique of coal-fired power plants because CO 2 produced from fossil fuel combustion can be captured and sequestrated by it. However, there are many questions about the economic properties of the oxy-combustion technique. In this paper, a detailed techno-economic evaluation study was performed on three typical power plants (2 × 300 MW subcritical, 2 × 600 MW supercritical, 2 × 1000 MW ultra supercritical), as conventional air fired and oxycombustion options in China, by utilizing the authoritative data published in 2010 for the design of coal-fired power plants. Techno-economic evaluation models were set up and costs of electricity generation, CO 2 avoidance costs as well as CO 2 capture costs, were calculated. Moreover, the effects of CO 2 tax and CO 2 sale price on the economic characteristics of oxycombustion power plants were also considered. Finally, a sensitivity analysis for parameters such as coal sample, coal price, air separation unit price, flue gas treatment unit price, CO 2 capture efficiency, as well as the air excess factor was conducted. The results revealed that: (1) because the oxy-combustion technique has advantages in thermal efficiency, desulfurization efficiency and denitration efficiency, oxy-combustion power plants will reach the economic properties of conventional air fired power plants if, (a) the CO 2 emission is taxed and the high purity CO 2 product can be sold, or (b) there are some policy preferences in financing and coal price for oxy-combustion power plants, or (c) the power consumption and cost of air separation units and flue gas treatment units can be reduced; (2) from subcritical plants to supercritical and finally ultra-supercritical plants, the economics are improving, regardless of whether they are conventional air fired power plants or oxy-combustion power plants. | XIONG Jie ZHAO HaiBo ZHENG ChuGuang | 2011 | Chinese Science Bulletin2011，56，31： | 4 |
| 14 | 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 |
| 15 | Differentially weighted direct simulation Monte Carlo method for particle collision in gas-solid flows显示文摘In gas-solid flows,particle-particle interaction(typical,particle collision) is highly significant,despite the small particles fractional volume.Widely distributed polydisperse particle population is a typical characteristic during dynamic evolution of particles(e.g.,agglomeration and fragmentation) in spite of their initial monodisperse particle distribution.The conventional direct simulation Monte Carlo(DSMC)method for particle collision tracks equally weighted simulation particles,which results in high statistical noise for particle fields if there are insufficient simulation particles in less-populated regions.In this study,a new differentially weighted DSMC(DW-DSMC) method for collisions of particles with different number weight is proposed within the framework of the general Eulerian-Lagrangian models for hydrodynamics.Three schemes(mass,momentum and energy conservation) were developed to restore the numbers of simulation particle while keeping total mass,momentum or energy of the whole system unchanged respectively.A limiting case of high-inertia particle flow was numerically simulated to validate the DW-DSMC method in terms of computational precision and efficiency.The momentum conservation scheme which leads to little fluctuation around the mass and energy of the whole system performed best.Improved resolution in particle fields and dynamic behavior could be attained simultaneously using DW-DSMC,compared with the equally weighted DSMC.Meanwhile,computational cost can be largely reduced in contrast with direct numerical simulation. | Yongxiang He Haibo Zhao Haoming Wang Chuguang Zheng | 2015 | Particuology2015，13，4： | 4 |
| 16 | Monte Carlo simulation for simultaneous particle coagulation and deposition显示文摘The process of dynamic evolution in dispersed systems due to simultaneous particle coagulation and deposition is described mathematically by general dynamic equation (GDE). Monte Carlo (MC) method is an important approach of numerical solu- tions of GDE. However, constant-volume MC method exhibits the contradictory of low computation cost and high computation precision owing to the fluctuation of the number of simulation particles; constant-number MC method can hardly be applied to engineering application and general scientific quantitative analysis due to the continual contraction or expansion of computation domain. In addition, the two MC methods depend closely on the “subsystem” hypothesis, which constraints their expansibility and the scope of application. A new multi-Monte Carlo (MMC) method is promoted to take account of GDE for simulta- neous particle coagulation and deposition. MMC method introduces the concept of “weighted fictitious particle” and is based on the “time-driven” technique. Furthermore MMC method maintains synchronously the computational domain and the total number of fictitious particles, which results in the latent expansibility of simulation for boundary con- dition, the space evolution of particle size distribution and even particle dynamics. The simulation results of MMC method for two special cases in which analytical solutions exist agree with analytical solutions well, which proves that MMC method has high and stable computational precision and low computation cost because of the constant and limited number of fictitious particles. Lastly the source of numerical error and the relative error of MMC method are analyzed, respectively. | ZHAO Haibo ZHENG Chuguang | 2006 | Science China(Technological Sciences)2006，49，2： | 4 |
| 17 | Hydrogen production through CO_2 sorption-enhanced methane steam reforming:Comparison between different adsorbents显示文摘A two-dimensional transient model has been developed to describe the catalytic methane reforming(MSR) coupled with simultaneous CO2 removal by different absorbents under non-isothermal,non-isobaric and non-adiabatic operating conditions.The influences of temperature,pressure and steam/carbon(S/C) on enhancement were taken into account.The results showed that the hydrogen mole fraction(dry basis) higher than 94% could be achieved using Li4SiO4,CaO,and HTC as CO2 acceptors at the operating conditions of 550℃ and 0.1 MPa.When the reaction temperature varied from 500℃ to 600℃,the initial CO2 capture rates were HTC>CaO>Li4SiO4>Li2ZrO3,and the saturation rates HTC>CaO>Li4SiO4>Li2ZrO3.Increasing the reaction temperature would improve the CO2 capture rate and available CO2 capacity.For Li4SiO4,although the adsorbing rate increased as the operating temperature increased,the capacity almost did not change.At 550℃,increasing the working pressure could promote the enhancing factors of Li4SiO4,Li2ZrO3 and HTC.There was an optimal steam/carbon ratio between 2-4.5 such that all CaO,Li4SiO4,HTC and Li2ZrO3 would obtain the biggest enhancement for H2 production at the pre-breakthrough stage. | CHEN YuMing ZHAO YongChun ZHANG JunYing ZHENG ChuGuang | 2011 | Science China(Technological Sciences)2011，54，11： | 3 |
| 18 | Characteristics of hemicellulose, cellulose and lignin pyrolysis显示文摘 | Haiping Yang Rong Yan Hanping Chen Dong Ho Lee Chuguang Zheng | 2006 | Fuel2006，，12： | 3 |
| 19 | Experimental Study on Chemical Looping With Oxygen Uncoupling Using Copper Based Oxygen Carrier and Different Volatiles Contained Coal Chars显示文摘采用溶胶一凝胶法制备CuO/CuAl204氧载体,研究了该氧载体在N2气氛下的释氧性能,发现氧载体774℃时开始释氧,且随着温度的升高氧气含量不断升高。随后,在流化床反应器中研究了挥发分含量不同的6种煤焦的化学链氧解耦燃烧(chemicalloopingwithoxygenuncoupling,CLOU)特性,结果表明,挥发分含量的增加和温度的升高均会加速煤焦燃烧,煤焦中碳元素转化率达到95%所需要的时间随着挥发分含量及温度的升高不断减少,相应的碳的平均转化率也不断增加;然而,较高的挥发分含量和反应温度都会导致CO2捕集率的下降。对于挥发分含量低的高平煤焦和东欢坨煤焦,C02捕集率超过99%,而对于挥发分高的胜利褐煤焦,C02捕集率不足95%。 | MEI Daofeng ZHAO Haibo MA Zhaojun FANG Yanfei ZHENG Chuguang | 2013 | 中国电机工程学报2013，33，11： | 3 |
| 20 | A novel incompressible finite-difference lattice Boltzmann equation for particle-laden flow显示文摘In this paper, we propose a novel incompressible finite-difference lattice Boltzmann Equation (FDLBE). Because source terms that reflect the interaction between phases can be accurately described, the new model is suitable for simulating two-way coupling incompressible multiphase flow.The 2-D particle-laden flow over a backward-facing step is chosen as a test case to validate the present method. Favorable results are obtained and the present scheme is shown to have good prospects in practical applications. | Sheng Chen Zhaohui Liu Baochang Shi Zhu He Chuguang Zheng | 2005 | Acta Mechanica Sinica2005，21，6： | 2 |
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