以75 t/h中压锅炉为对象，介绍了水冷异型分离循环流化床的压火、启动特性。其冷态启动到满负荷的时间约为1.5～2 h，燃烧室升温速率平均为12 ℃/min，最大为21 ℃/min。压火6～7 h后可以直接热态启动，热态启动时间约为30 min，温态启动时间与启动时的床温有关，一般在30～60 min。运行中的负荷变化率为9%/min～11%/min。 Taking the 75 t / h medium pressure boiler as an example, the characteristics of pressure fire and start - up of water - cooled shaped separation circulating fluidized bed are introduced. Its cold start to full load time is about 1.5 ~ 2 h, the average heating rate of the combustion chamber 12 ℃ / min, the maximum is 21 ℃ / min. 6 ~ 7 h after the fire can be directly hot start, hot start time is about 30 min, warm start time and start bed temperature, usually 30 ~ 60 min. The load change rate during operation is 9% / min ~ 11% / min.