The laying of firebrick in furnace

Drum type heating furnace is mainly composed of a cylinder, head, tube, pipe, oil (water) distribution pipe, smoke box, a chimney, saddle and the interface tube etc… The combustion of the fuel in the furnace, forming high temperature flue gas and release the heat, high temperature flue gas heat generated by a fire tube or pipe to heat conduction, convection, radiation, convection, the heat is transferred to the medium in the furnace, the temperature reached the process demand.

The heating furnace in the burner side fire tube entrance laying 1.2 ~ 2.4m long refractory brick, the fuel burns, ceramic fiber blanket generates a lot of heat in the refractory brick refractory brick surface, heat transfers to the outside, causing the distance refractory brick recent fire tube heat intensity is too high, local overheating, oxidation, axial, radial deflection indentation deformation.

Transfer station is widely used at present, self discharge process, silt into the furnace from the water discharge pipe, the heating medium convection heating furnace of sediment, stirring constantly, and finally fell on top of the fire tube and smoke pipe.

Can be found in dredging, heating furnace overhaul, the heating furnace tube sediment thickness more than 150mm, especially in the high temperature zone of the fire tube (refractory bricks in 100 ~ 500mm of maximum sediment thickness). Under such circumstances, is bound to cause loss, heat transfer efficiency of the heating furnace of local overheating, drum kits, perforation may happen at any time.