针对目前锅炉空气预热器低温腐蚀 ,不耐磨损 ,导致漏风串烟 ,影响炉膛燃烧 ,检修难度大 ,无法更换 ,锅炉长期低负荷低效运行的难题 ,本文介绍了一种将预热器立式改卧式 ,采用搪瓷钢管、石棉盘根密封的改造方案。经实践验证 ,很好地解决了上述难题 ,对拥有空气预热器的电厂和工业用户都具有重要的推广价值。 In view of the current boiler air preheater low temperature corrosion, impatience wear and tear, leading to air leakage string smoke, affecting the furnace combustion, maintenance difficult, can not be replaced, the boiler long-term low-load operation inefficient, this paper describes a preheater Vertical horizontal, using enamel steel pipe, asbestos packing reform package. Proven by practice, the above problems are well solved and have important promotion value for power plants and industrial users who have air preheaters.