欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
为了研究煤燃烧过程中痕量元素的挥发及其影响因素，对焦作煤和六盘水煤在200～1000℃温度范围内进行了热解和燃烧试验，并将底灰中As和Se的变化与煤的热失重进行了对比分析．试验结果显示：As的挥发跟煤的热失重有一定的关系，当煤的热失重最剧烈时，As的挥发速率也最大；对于Se，由于其易挥发性，一般在600℃以后挥发趋于稳定．同时对这两种煤中痕量元素的挥发性进行了比较，发现焦作煤中痕量元素更易挥发，这主要是由于六盘水煤中的含硫量较高，大部分痕量元素跟硫铁矿结合，导致其熔沸点较高．最后，在800℃下对痕量元素As和Se的挥发行为进行了动力学分析．
英文摘要：
In order to study Se and As＇s evaporation and its influence factor during coal combustion, an experiment was carried out in a bench-scale fluidized bed combustor at the temperature range of 200- 1 000 ℃. The atmosphere, temperature and sulfur concentration in coal were considered in the experiment. The experimental results indicated that the behavior of As had relations to the weight loss rate of coal, the peak of As vaporization rate occurred at the maximum coal volatilization rate. However, the variation of Se concentration in ash was very limited when temperature was above 600 ℃. Moreover, it was also observed that the vaporization of Se and As in the low sulfur coal was easier than that of the high sulfur coal. The kinetic parameters of Se and As at 800 ℃ were also calculated.
同期刊论文项目
同项目期刊论文
Studying the influence of operation parameters on heavy and alkali metals partitioning in flue gases
Combustion Modeling of Blended Coal in a 300MW Tangentially-firing Boiler with a Three-mixture-fract
An Improved Petrov-Galerkin Spectral Collocation Solution for Linear Stability of Circular Jet, CMES
A Special Issue on 2009 Sino-Australian Symposium on Advanced Coal and Biomass Utilisation Technolog
An economic feasibility study of O2/CO2 recycle combustion technology based on existing coal-fired p
Relationship between nitrogenous species in coals and volatile nitrogen-containing yields during pyr
An investigation of the causes of the difference in coal particle ignition temperature between combu
Effect of cellulose, lignin, alkali and alkaline earth metallic species on biomass pyrolysis and gas
Physical quantity synergy in the field of turbulent heat transfer and its analysis for heat transfer
The effects of coal blending on the formation and properties of particulate matter during combustion
The Solution of Transient Riadative Transfer with Collimated Incident Serial Pulse in a Plane-Parall
Optimization of combustion based on introducing radiant energy signal in pulverized coal-fired boile
A compact optimization strategy for combustion in a 125 MW tangentially anthracite-fired boiler by a
Volatilization behavior of Cd and Zn based on continuous emission measurement of flue gas from labor
Numerical simulations of the slagging characteristics in a down-fired, pulverized-coal boiler furnac
A pilot scale study on co-capture of SO2 and NOx in O-2/CO2 recycled coal combustion and techno-econ
Pyrolysis of maize stalk on the characterization of chars formed under different devolatilization co
Effects of Indigenous and Added Minerals on Transformation of Organic and Inorganic Sulfur in Densit
Mineralogy and chemical composition of high calcium fly ashes and density fractions from a coal-fire
Study of flow mechanism and heat transfer enhancement in longitudinal-flow tube bundle of shell-and-
The Formation and Emission of Particulate Matter during the Combustion of Density Separated Coal Fra
An efficient solution for linear stability of circular jet: A combination of Petrov-Galerkin spectra
Physical quantity synergy in laminar flow field of convective heat transfer and analysis of heat tra
位置：