With the help of the ash conveying system in one 600 MW supercritical unit,the application of a double driving pipes pneumatic technology is introduced.

• 以湖北国电荆门三期2x600MW超临界机组除灰系统为例,介绍了双套管气力除灰技术在长距离灰渣输送中的特点、系统设置、及运行模式;