“脱硫”已经成为近年来环保界最为响亮的名词之一,火力发电厂为实现烟气的达标排放,新电厂都同步上马了脱硫设备,配套烟囱有金属内筒或耐酸砖内筒烟囱,本文介绍了烟囱金属内筒焊接施工工艺,积累了烟囱金属内筒施工经验,为烟囱金属内筒施工提供参考和借鉴。 “Desulfurization ” has become one of the most resounding terms in the environmental protection circles in recent years. In order to achieve the standard discharge of flue gas, the new power plants have launched the desulfurization equipment synchronously. The matching chimney has metal inner cylinder or acid-resistant brick inner cylinder chimney , This paper introduces the construction technology of chimney metal inner tube welding and accumulates experience in the construction of chimney metal inner tube to provide reference for the chimney metal inner tube construction.