论文部分内容阅读
为了寻求提高流化床燃烧效率的有效方法,得到特定煤种的设计数据,在一横截面积0.3m×0.3m、高6m的常压流化床燃烧装置上进行了飞灰循环回燃流化床的燃烧动力特性试验,得到固体碳含量随循环倍率、颗粒粒径、取样位置、流动方向的变化规律,采用飞灰循环回燃后床层温度、流化速度对燃烧效率的影响以及悬浮空间温度物性和燃烧份额的变化。试验结果表明,采用飞灰循环回燃,既可大幅度提高燃烧效率,又可明显改善运行特性。
In order to find an effective way to improve the combustion efficiency of the fluidized bed, the design data of a specific kind of coal were obtained. The fly ash cycle was recuperated on a normal pressure fluidized bed combustion device with a cross-sectional area of 0.3m × 0.3m and a height of 6m The combustion kinetic characteristics of the bed were tested to obtain the variation of solid carbon content with the cycle rate, particle size, sampling position and flow direction, the effect of bed temperature and fluidization velocity on the combustion efficiency after fly ash was recycled back to the combustion, Spatial temperature properties and changes in the proportion of combustion. The test results show that the use of fly ash cycle back to combustion, can greatly improve the combustion efficiency, but also significantly improve operating characteristics.