| 摘要 |
PURPOSE: To improve the thermal efficiency of a continuous heating furnace by fitting plural pairs of regenerative change-over combustion type burners as the heat source of a continuous heating furnace of steel slabs at the upper and the lower parts of a passing line of the steel slab and alternately changing over the combustion and the heat storage processes. CONSTITUTION: Plural lines of regenerative change-over type combustion burners 11a, 11b and 12a, 12b are provided oppositely to each other in two steps, above and below the steel slab S on both side walls 4a, 4b in the longitudinal direction of the heating furnace while the steel slab S is moved in the continuous heating furnace with fixed skids 2 and movable skids 3. The respective burners have heat storage bodies 21a, 21b and 22a, 22b, respectively and a blower 8 for blasting, blower 9 for exhausting and air change-over valves 41, 42 are utilized, and alternately changing over the paired burners 11a, 11b and 22a, 22b for the use of the burner for combustion and burner for heat storage, respectively. The sensible heat of high temp. exhaust gas from the burner is stored to heat the air for combustion of the burner, and thereby the utilizing efficiency of fuel in the heating furnace is improve and the temp. of the exhaust gas from the heating furnace is lowered. |
