A TOP-COMBUSTION TYPE HOT-MAST STOVE WITH A HEAT INSULATION LAYER IN THE PRE-COMBUST CHAMBER

摘要

A top-combustion type hot-mast stove with a heat insulation layer in the pre-combust chamber Longer service life of the top-combustion type hot-blast stove is achieved with the a heat insulation layer in the pre-combust chamber. Through setting heat insulation layers in pre-combust chamber, the hot-blast stove blocks the path between the inner wall of pre-combust chamber and the inner wall of coal gas annular cavity and air ann8lar cavity, reduces the temperature of the inner wall of coal gas annular cavity and air annular cavity, temperature stress and heat expansion of the inner wall of pre-combust chamber, furthermore it makes the slide freely between the inner wall of pre-combust chamber and the inner walls of coal gas annular cavity and air annular cavity and. doesn't generate force to inner wall of coal gas annular cavity and air annular cavity, accordingly increasing the service life of the hot-blast stove. At the same time, it sets an annular insulation layer in the second lining between the coal gas annular cavity and the air annular cavity. The inner wall of pre-combust chamber is a conical structure. A removable temperature isolation cover is set between the pre-combust chamber and the arch crown. According to the demand, it can increase the mixture effect of thecoal. Gas and air and reduce radiant heat of the hot blast to the pre-combust chamber in case of blowing.