Comprehensive Analysis of Tube explosion accident in Industrial Boiler of Chemical Plant
The harm degree of Tube explosion in Chemical Plant Industrial Boiler mainly refers to the damage of smoke pipe, water wall tube and convective pipe. Boiler tube, steam, water pouring violations, boiler water shortage caused by a short period of time, if not properly dealt with, will continue to expand, seriously threatening the safety of production and people's lives.
Analysis on the causes of Tube explosion in Industrial Boiler of Chemical Plant (1) the blockage of boiler tube results in poor water cycle, resulting in local overheating and tube explosion. The common reasons for blocking the pipeline are: unqualified water treatment, boiler pipe pollution, new pipe does not pass the ball inspection, sand and other sundries in the pipe or bring cotton yarn, falling scale and other sundries. (2) Local damage of the pipe, such as touch to local concave or mechanical damage, Blowing causes local wear, baffle wall (smoke folding wall) local furnace tube damage is short circuit, fly ash worn furnace tube near the furnace wall high speed smoke flow and tube local corrosion thinning, etc. (3) steel pipe manufacturing defects, such as poor welding quality, Unreasonable structure, pipe The material cannot be elongated, etc. (4) the local temperature difference of the pipeline varies greatly, which leads to the cracking of the pipeline, such as improper treatment after lack of water, improper burning and low feed water temperature. After entering the boiler, it is not mixed well with the boiler water, etc. (5) the coking in the furnace is not cleared in time, the water is improperly treated after the water is made, and the heating of the pipe is uneven and the feed water temperature is low because of incorrect fire. After entering the pot, it is not well mixed with furnace water. (5) Coking in the furnace is not cleared in time, resulting in uneven heating and destruction of water cycle.
3. The treatment method of tube explosion in the industrial boiler of chemical plant (1) reduce the load, stop blowing, increase the feed water, maintain the water level, report to the leader immediately according to the normal shutdown treatment and immediately report to the leader. (2) the water level meter can not maintain the water level, When the water level is not visible, the inlet water should be stopped immediately and the furnace should be stopped urgently, but the furnace should continue to run so that smoke and steam can be discharged from the furnace.
