First of all you want to know, we understand what is bath boiler flue combustion phenomenon it again? Next Xiaobian universal about it: 1. re-combustion flue phenomenon ① flue combustion flue gas temperature points again after a sharp increase, oxygen table indicates the value is too small. ② negative dramatic changes flue and combustion chamber, a secondary air temperature and exhaust gas temperature rises abnormally, ③ found the fire and smoke from the flue checked at the door hole, severe smoke Xiao inspection doors and chimney black smoke. ④ such as the occurrence of secondary combustion air preheater, the shell temperature radiation Nuisance or red-hot sensation, severe air preheater happen bit astringent, air preheater motor current indication shaking. 2. The process of combustion flue ① again as normal when the exhaust gas temperature does not rise, you should check all parts of the flue gas temperature immediately determine Ran combustion occurring in the region, with a soot blower steam soot blowing. ② reported value of a long, strengthen adjustment of combustion, reducing the unit load. When ③ especially by taking measures remain efficiency, exhaust gas temperature does not rise properly continue to 250T or threaten the safety of air preheater, report the value of long emergency shutdown. ④ stop blower, fan, closes all dampers and smoke damper, non Ventilation: An air preheater fire should be put out the fire using a blower unit or water. ⑤ Ran economizer cycle valve opens to protect coal is apricot. ⑥ to confirm the absence of fire within the flue, you can start indexing, blower, make the furnace purge. I hope the above content on all future work can help!