The single film model of a burning carbon particle is employed with CO as the sole heterogeneous reaction product. Arrhenius parameters which describe the chemical reaction rate coefficients are derived for the chars of a hvb-biturninous coal from Missouri, a North Dakota lignite and a high-...
Combustion of the char is a surface (heterogeneous) reaction. These reactions are for the most part sequential, and the slowest of these will determine the rate of the overall process. Devolatilization of pulverized coal and volatiles combustion The design of coal burners and furnaces is very ...
chemical reaction kineticsmineralogyThe elemental and mineralogical variation in a self-burning coal seam from Coalspur, Alberta, is determined using instrumental neutron activation analysis (INAA) and x-ray diffraction (XRD). The elemental variation in the coal seam is related to temperatures in the...
SUBSTANCE: method is based on preheating coal by burning high-reaction fuel. Used as high-reaction fuel is high-reaction coal which is preliminarily fired up in first section of primary furnace and heat thus obtained acts on low- reaction coal. EFFECT: low cost of method due to use of low...
Taking the blended coal chars of anthracite and bituminous coal as examples,the physical and chemical properties andcombustion reactivityof blended coal chars were investigated by micro-analysis method. 以无烟煤和烟煤的混煤焦为例,采用微观分析方法研究混煤焦的理化特性和燃烧反应性。
Further, some method might be considered of either pitching or waxing casks so that they will not require so many men to wash them, and consequently less coal for heating water, etc. Unfortunately we are again hampered in this ... Riley,A Walter - 《Journal of the Institute of Brewing》...
reaction kineticsstatistical analysis/ coke ash particlesfluidized bed furnaceA generalized statistical model of the process of burning out of coal particles in a fluidized-bed furnace is constructed. It takes into account the kinetics of heterogeneous chemical reactions, as well as radiant and ...
(IARC, 1987). Most of these PAHs have been studied in biomedical, biochemical and other laboratory-based experiments. Out of these 15 PAHs, at least 8 are present in coal tar that is used as a fuel in the steel industry and blast furnaces. Coal tar is also used in the treatment o...
6. Factors affecting catalyst regeneration were discussed based on the coke-burning kinetics of cracking catalyst and the chemical reaction engineering principles. 利用裂化催化剂上的烧碳动力学和化学反应工程学原理,讨论了催化剂再生的影响因素,并通过再生器的烧焦计算,重点讨论了再生温度、过程热效应、催化剂循...
Hurt, The temperature, burning rates and char character of pulverised coal particles prepared from maceral concentrates, Symposium (International) on Combustion, vol. 24, Elsevier, 1992, pp. 1207-1215.T. F. Wall, et al., "The Temperature, Burning Rates and Char Character of Pulverised ...