Prediction of Flow and Erosion in Power Utility Boilers and Comparison With Measurement

摘要: Multidimensional simulations of both flue gas and fly ash (solid particle) flows with application to erosion prediction in the economisers coal-fired power utility boilers are reported. A computer code specifically designed for boilers, DS4PUB (Design Software Power Utility Boilers), was used calculations. The major area often occurs at economizer boiler depends on particulate velocity concentration so that computational results include inlet distribution mean velocities, concentration. validated by comparisons previously available experimental data recently performed measurements flow velocity, dust burden, rates economizers large operating stations. multidimensional agreed reasonably well measurements. An important finding this study is transverse location maximum tube bank strongly upstream geometric design boiler. For a shorter turning path, found be close rear wall because occur region. configurations long which includes splitter plate, region closer front economizer, mainly due high relatively side also particles area. Interesting features complex geometries such as distributions different particle sizes discussed.