Promoting the rational and sufficient combustion of fuel is due to the fact that the fan capacity of the heating furnace EPC in the past was generally too large, and the manual gate adjustment of air volume is limited by production conditions and the labor intensity of the furnace operator, resulting in unsatisfactory adjustment of air pressure and volume, which leads to the inability of fuel to burn reasonably and fully, affecting the utilization rate of fuel. We have carried out technological upgrades to the air and oil supply system, adding a supporting variable frequency control system. The stoker adjusts the air and oil supply amount through the electronic control system according to the actual production situation, within the range of changes in production rhythm, thus reducing the occurrence of excessive steel oxide scale sticking to the ingot.
According to calculations, after this renovation, the oxidation burn loss can be reduced by 5. Calculated based on an annual steel production of 1.5 million yuan, it can create economic benefits of nearly 15 million yuan per year, and the entire investment in the renovation can be recovered in less than three months. We also made appropriate modifications to the structure of the atomizing nozzle, significantly improving the atomization situation of the burner; At the same time, it preheats all the fuel to enhance its heat reaction capability. Through these small-scale technological upgrades, the combustion efficiency of fuel has reached over 95%, achieving considerable economic benefits; In addition, it has achieved good social benefits by reducing fuel consumption and exhaust emissions.