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Investigations on fouling rate in convective bundles of coal-fired boilers in relation to optimization of sootblower operation

机译：与吹灰器优化有关的燃煤锅炉对流管结垢率研究

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The article deals with results of full-scale investigations on fouling in convective bundles of chosen types of coal-fired boilers. The boilers tested were: conventional pulverized-coal fired two-pass boilers (two types), a single-pass subcritical (a tower shape) boiler and CFB boiler. Mechanisms of deposit formation and basics of deposit modeling are shortly discussed. An own approach to predict build-up of loose powdery sediments was developed on the basis of the results of full-scale measurements. The correlation for maximum fouling time was obtained by statistical processing of measurement data and is applied in optimization of sootblower system operation. The obtained correlation depends on the following variables: geometric properties of the bundle, fly ash size distribution and basic parameters of the flue gases-all of them are easily accessible in boiler operation.
机译：该文章涉及对选定类型的燃煤锅炉的对流管束结垢的全面调查结果。测试的锅炉为：常规煤粉燃烧两程锅炉（两种类型），单程亚临界（塔形）锅炉和CFB锅炉。简短讨论了沉积物形成的机理和沉积物建模的基础。根据全面测量的结果，开发了一种预测松散粉状沉积物堆积的方法。通过测量数据的统计处理获得最大结垢时间的相关性，并将其用于优化吹灰器系统操作。所获得的相关性取决于以下变量：烟囱的几何特性，粉煤灰的粒径分布和烟气的基本参数-所有这些在锅炉运行中都很容易获得。

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