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PREDICTION OF FOULING AND SLAGGING IN PULVERIZED-COAL FIRED FURNACES

机译：煤粉炉的结垢和结渣预测

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The objective of this paper is to develop a method for predicting the fouling dynamics and thermal resistance of a certain coal and its fly ash in a coal-fired utility boiler as well as determine the emissivity of the fly ash in order to optimize soomblowing procedures for fouling clean-up. The methodology comprises combustion experiment in a 50kW test facility, characterization of the coal and its mineral matter and the consequent fly ash as well a series of computational fluid dynamic simulations. Ash deposition from Cerrejon D Colombian and Billiton-Prime South African coals were studied and their behavior predicted in 575MW tangentially-fired and 550MW opposite-wall boilers. Good comparison was obtained between predicted results and actual data from the boilers.
机译：本文的目的是开发一种预测燃煤电站锅炉中特定煤及其粉煤灰结垢动力学和热阻的方法，并确定粉煤灰的发射率，以优化燃煤锅炉的沉灰程序。结垢清理。该方法包括在50kW测试设备中进行燃烧实验，煤及其矿物质的表征以及随之产生的粉煤灰，以及一系列计算流体动力学模拟。研究了Cerrejon D哥伦比亚煤和南非Billiton-Prime煤的灰分沉积，并预测了它们在575MW切向燃烧和550MW对壁锅炉中的行为。锅炉的预测结果和实际数据之间获得了很好的比较。

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