一、概述为了更有效地回收锅炉、加热炉的排烟余热,并防止因烟温降得过低导致预热管的低温露点腐蚀,使用玻璃管省煤器或空气预热器己成为发展中的一项有效技术措施。目前,国内己有80多台电厂锅炉装设使用。一些炼油厂的加热炉上试用,也积累了宝贵的经验,见表1。 I. Overview In order to more effectively recover boiler, furnace exhaust heat, and to prevent the smoke temperature drop is too low lead to preheating pipe dew point corrosion, the use of glass tube economizer or air preheater has become a developing A valid technical measure. At present, more than 80 domestic power plant boilers have been installed for use. Some refineries furnace trial, but also accumulated valuable experience, see Table 1.