一、前言据统计全国１２ＭＷ以下的小型火电机组总容量为１２０００～１３０００ＭＷ，其中小型背压机组占了相当的比例。对小型背压式机组而言，其不利因素主要有二点：其一为机组容量小，单位千瓦造价较高；其二为地方及企业办热电厂普遍缺乏运行管理经验，人员技术水平... I. Preface According to the statistics, the total capacity of small thermal power units below 12MW is 12000 ~ 13000MW, among which the small backpressure units account for a considerable proportion. For small back pressure unit, the disadvantageous factors are mainly two points: one is the unit capacity is small, the unit cost is higher; the other is that the local thermal power plant and the enterprise generally lack of operation and management experience, technical level of personnel ...