【摘要】 在1台75 t/h循环流化床锅炉上进行了改变床存量的燃烧试验,在3220~7330 Pa床层压降变化范围内,测试了改变床存量对锅炉负荷能力、炉内轴向颗粒浓度分布以及实际燃烧效率的影响.结果表明:在远低于常规床层压降的条件下,循环流化床锅炉仍能保持满负荷运行,而且燃烧得到改善;在适当控制燃料粒度的条件下,循环流化床锅炉降低床层压降运行不仅可行,还可以使锅炉整体运行性能得到优化,是锅炉设计和运行优化的方向.更多还原

【Abstract】 Combustion tests were conducted by changing bed inventory on a 75 t/h circulating fluidized bed boiler.Within the bed pressure drop range of 3 220 Pa to 7 330 Pa,the influences of bed inventory on boiler load,axial particle concentration distribution in the furnace and actual combustion efficiency were tested.Results show that the boiler can still maintain full load operation under the condition of low bed pressure drop which is far from the normal bed pressure drop,and combustion is improved.It is concluded that under the condition of proper control of fuel particle sizes,operation of circulating fluidized bed boiler under low bed pressure drop is not only feasible,bus can also optimize the integral operational performance of the boiler.It is the tendency of boiler design and operation optimization.更多还原