绪言近五年来,电站设计的工艺及生态学方面的要求起了急剧的变化,其小特别影响锅炉设计的两个变化无疑具有不可逆转的性质:1.油及天然气等优质燃料将愈来愈不可能用来产生蒸汽,因此必须大量利用较丰富的燃料——主要是煤。而且是向使用灰份多和质量差的劣质煤发展。2.烟囱排放量要求控制在愈来愈严格的水平上。 INTRODUCTION In the last five years, the process and ecology requirements of power station design have dramatically changed. Two minor changes that affect the design of boilers undoubtedly have an irreversible nature: 1. Higher quality fuels such as oil and natural gas will become increasingly available It can not be used to generate steam, so much richer fuel must be used - mainly coal. But also to the use of ash and poor quality of poor quality coal development. 2. Chimney emissions control requirements at an increasingly stringent level.