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近年来,我国能源结构进行了科学合理的调整,使得一些新能源的利用有效促进了经济社会的可持续发展。火力发电作为我国主要的发电方式,技术得到了长足的进步,在此基础上,如何进一步提高热力循环效率成为新的课题。文章从预热凝结水方面、预热一、二次风方面、区域制冷供热方面、利用烟气余热干燥褐煤方面就电厂锅炉排烟余热利用技术进行了探讨,以期能继续提高电厂热力循环效率。
In recent years, China’s energy structure has been scientifically and reasonably adjusted so that the utilization of some new energy sources has effectively promoted the sustainable economic and social development. As the main mode of power generation in China, thermal power generation has made great strides in technology. On the basis of this, how to further improve the thermal cycle efficiency has become a new issue. The paper discusses the technology of residual heat recovery of power plant boiler smoke from the aspect of preheating the condensate, preheating primary air and secondary air, regional cooling and heating, and drying lignite by residual heat of flue gas, in order to continue to improve the thermal cycle efficiency .