The boiler of this industry includes two series of natural circulation water-tube waste heat boilers:carbon rotary kiln waste heat boiler and tank carbon waste heat boiler.With vertical Ⅱstructure,the structure of the boilers is brand new and has advanced properties.It is original throughout China and is a new-type carbon rotary kiln waste heat boiler developed independently by this company.
The flue gas is discharged from the boiler through boiler slag screen,super heater,convection tube tank and steel tube economizer.The boiler slag screen of the boiler is lengthened from the front water wall tube.The filter is horizontal pendant structure,constituded by high temperature section and low temperature section,and face-type temperature reduction arrangement is adopted.The convection tube tank is in-line pitching.Flue gas twice baffle plate is adopted to enhance the flue gas speed and formhorizontal scouring,so the heat transfer capacity of convection tube tank is improved.Economizer employs S-shaped tube,and has horizontal scouring staggered arrangement.The central part of water-cooling system is membrane-type water wall separating wall;in this way,not only the heating surface is enlarged,but both the sealing and safety are improveed.The front and back water wall also adopts membrane-type water wall.
This boiler structure,compared with traditional carton rotary kiln waste heat boiler,covers a smaller area,needs less investment,is brand new and has advanced properties.It is of leading level in China and is a new milestone in the development of carbon rotary kiln waste heat boiler.
The main specifications are as following:rated steam output 2-130 t/h rated steam pressure 0.6-9.8MPa.