Ash deposition on the furnace wall of a boiling furnace
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Our factory experienced a ash collapse this year. The reasons analyzed are as follows: 1 excessive moisture in the raw materials; 2 deformation of the material feed mechanism and uneven material distribution; 3 insufficient bottom air flow leading to incomplete combustion. We hope everyone will be vigilant
In fact, it is also closely related to the particle size of the raw materials and the content of low-melting-point metals. This should also be given attention. Especially when parking to enter the furnace for maintenance, it is necessary to take appropriate safety measures. We took isolation and protective measures before entering the furnace to carry out inspection work.
The collapse of ash in fluidized bed boilers is nothing new; such incidents occurred frequently over the past few years. In the most severe case, after the fluidized layer in the boiler was cleaned, the ash inside the furnace collapsed, causing the boiler to shake. The amount of ash accumulated in the entire fluidized layer was much greater than the amount that had been removed (the thickness of ash on the furnace walls reached 800 mm)； (In the slurry-fed, boiling calcination acid production system), by removing heat from the boiling furnace, ash collapse hardly occurs, and little ash adheres to the furnace walls as well ；