Heating furnaces are energy-consuming equipment in the steel industry, accounting for about 70% of the energy consumption of the rolling process, directly affecting the production cost and energy consumption of the steel industry.

iFurnace is a newly developed intelligent combustion system by Zhongguan Information. In response to the heating furnace process and energy-saving and environmental protection needs, it is installed in the communication room of the first and second level of heating furnaces. In addition to the existing secondary functions, it develops intelligent optimization control strategies to meet the automatic temperature control of multiple and small amounts of steel grades, ensuring that the heating furnace can have energy-saving effects when it is produced in the natural production of the heating furnace.

Through intelligent control, it is achieved:

    1. Improve the cost indicators of heating furnace energy consumption and rust loss

    2. Process indicators for improving temperature control accuracy and steel blast homogenization

    3. Improve the environmental protection indicators of NOx emissions

System functions: Energy saving and waste reduction in heating furnace and process optimization technology

    1. Furnace pressure prediction control: predict the degree of air suction, automatically adjust the furnace pressure, and effectively inhibit air suction

    2. Hypoxic furnace atmosphere control: Use the concept of Soft sensor (soft sensor) to automatically adjust the air-fuel ratio of each furnace area, maintain the optimal combustion state, and realize the hypoxic furnace atmosphere and exhaust gas low oxygen control in the high-temperature furnace area

    3. Intelligent temperature control: According to process requirements, three-dimensional embryo temperature calculation and prediction of embryo temperature and rolling stop strategy are used to adjust the optimal temperature rise temperature control, so as to achieve rapid interlacing of hot and cold embryos, adapt to the wide range of steel types to effectively control hits, save energy and improve the quality of steel embryos

    4. Application benefits

      1. Energy saving range

            i. Hot rolled farm about 2%

            ii.Ball Steel Factory Small Steel Bulk Factory About 3~8%

      2. Reduce waste: reduce burn loss of steel billets up to 0.06%

      3. Reduce the displacement: The annual output of four hot-rolled production lines is 12.6 million tons

            i. Can reduce CO2 emissions by 9,000 tons

            ii. Reduce NOx emissions by 7.7ppmNOx

      4. Improve the quality of embryo temperature: effectively improve the uniformity of steel embryo

            i. Take into account the uniformity of three-dimensional embryo temperature

            ii. Optimize energy saving amplitude and temperature uniformity