中文摘要：

30 kW 凳子规模钻塔白煤研磨了燃烧由传播预热了使流体化的床(CFB ) 被开发。CFB 起床人有 90 公里和 1,500 公里的高度的一条直径。下面开火的燃烧房间(DFCC ) 有 260 公里和 3,000 公里的高度的一条直径。燃烧实验被执行用与 6.74% 不稳定的内容白煤研磨了。这低不稳定的煤是困难的点火并且烧坏。因此，它要求更长的染料烧尽时间和更高的燃烧温度，它导致更大的 NOX 排出物。在当前的学习，影响燃烧特征和 NOX 排出物的重要因素在减少的地区被调查例如过量空气比率，在减少的地区的空气比率，和燃料住处时间。白煤研磨了能快速被预热直到 800x

英文摘要：

A 30 kW bench-scale rig of pulverized anthracite combustion preheated by a circulating fluidized bed （CFB） was developed. The CFB riser has a diameter of 90 mm and a height of 1,500 mm. The down-fired combustion chamber （DFCC） has a diameter of 260 mm and a height of 3,000 mm. Combustion experiments were carded out using pulverized anthracite with 6.74% volatile content. This low volatile coal is difficult to ignite and burn out. Therefore, it requires longer burnout time and higher combustion temperature, which results in larger NOx emis- sions. In the current study, important factors that influence the combustion characteristics and NOx emissions were investigated such as excess air ratio, air ratio in the reducing zone, and fuel residence time in the reducing zone. Pulverized anthracite can be quickly preheated up to 800~C in CFB when the primary air is 24% of theo- retical air for combustion, and the temperature profile is uniform in DFCC. The combustion efficiency is 94.2%, which is competitive with other anthracite combustion technologies. When the excess air ratio ranges from 1.26 to 1.67, the coal-N conversion ratio is less than 32% and the NOx emission concentration is less than 371 mg/m^3 （@6% O2）. When the air ratio in the reducing zone is 0.12, the NOx concentration is 221 mg/m^3 （@6% O2）, and the coal-N conversion ratio is 21%, which is much lower than that of other boilers.