杭州协联热电有限公司二期工程新建的一台2 2 0 t/ h循环流化床锅炉 ( 4号炉 ) ,为三级过热 ,两级减温 ,无中间再热式高压锅炉。主汽额定压力为 9.8MPa,额定汽温为 540℃ ,带一台双抽 2 5MW汽轮机 ( 3号机 ) ,中、低压两级抽汽单元制。老系统有 3台 1 2 0 t/ h中压锅炉 ,3台 1 A 220 t / h circulating fluidized bed boiler (No.4 furnace) newly built in the second phase of Hangzhou Xielian Thermoelectric Co., Ltd. Is a three - stage overheating and two stage desuperheating without intermediate reheat type high pressure boiler. The main steam rated pressure of 9.8MPa, rated steam temperature of 540 ℃, with a double pumping 2 5MW turbine (No. 3), low-pressure two-stage extraction unit system. The old system has three 120 t / h medium pressure boilers, three 1