Hearth structure improvement method for enhancing heating furnace hearth heat transfer efficiency

Abstract

The invention discloses a hearth structure improvement method for enhancing heating furnace hearth heat transfer efficiency. The method includes: dismantling an original heating furnace bottom refractory material and maintaining a furnace bottom steel structure, laying a high-alumina brick layer, a clay brick layer, a light insulating brick layer and a silicon calcium board layer from the inside to the outside in order at the furnace bottom, and determining the thickness value of each layer according to the elevation size of the heating furnace bottom; arranging a two-channel nozzle expansion temperature field burner or an elliptical nozzle burner on the furnace wall, and making the burner tilt towards the furnace bottom by certain angle; dismantling an original water beam embankment from the heating furnace, and positioning the water beam again, then pouring a water beam embankment, adopting heavy castable as a pouring material, determining the embankment height according to the position of the water beam in the furnace, keeping the embankment height of a heating section and a soaking section at 150mm-250mm, and keeping the embankment height of a heat recovery section at 100mm-150mm. The method transforms the hearth structure, elevates the furnace bottom height, effectively improves the heat transfer efficiency of the heating furnace, reduces fuel consumption, and enhances the energy-saving effect of heating furnace transformation.

Description

technical field [0001] The invention relates to a furnace structure improvement method for improving the heat transfer efficiency of a heating furnace furnace. Background technique [0002] The heating furnace is used for heat treatment of various billets; in the design of the traditional heating furnace, the convenience of operation and maintenance of the heating furnace is mainly considered. Generally, the direct distance between the bottom of the heating furnace and the steel loading line is relatively high. The height of the steel wire is generally between 1.9m and 2.1m, so the height of the furnace is relatively large. Excessive height of the furnace will reduce the thermal efficiency of the furnace and affect the production efficiency of the heating furnace; and the high furnace height will increase the heat dissipation area of ​​the heating furnace, resulting in an increase in heat dissipation. And the temperature of the operating environment increases, which is not ...

AI Technical Summary

Problems solved by technology

Due to the complex structure of the bottom of the heating furnace, and the burners of the thermal equipment on the side wall are generally stereotyped products, it is difficult to change. Therefore, the current energy-saving renovation of the heating furnace mostly adopts the method of increasing the furnace top pressing structure and hanging the disturbing parts on the furnace top to improve the efficiency. The energy-saving transformation of the heating furnace efficiency has a certain energy-saving effect, but it is not very obvious