Cause analysis of the water cooled wall tube burst focused on irrational points of design, excessive thermal loading, changes of coal category, burner defects and deposits in throttle valves.
The main transformed parts included water cooling wall, burner, coal saver, dust removing equipment, air suction machine and coarse powder separator.
主要改造部分有：水冷壁、燃烧器、省煤器、除尘设备、吸风机和粗粉分离器等。
3
Meanwill, the composition of flue gas changes evidently. The conclusion provides an important theoretical basis for design and operation on the oil-free ignition of burner with hot wall.