Application of Intelligent Control Technology of External Pressure Equalization of Hot Stove
The intelligent control technology of external pressure equalization of hot stove is energy saving,and it consist of two parts:external pressure equalization technology for stove switchover and fully automatic intelligent control system.This technology can eliminate the fluctuation of air pressure during switchover of the stove and enable fully automatic operation of stove system through"one-button"action.The innovation of this technology focuses on(1)replacing the blower by the ex-ternal high-pressure air tank to boost the stove;(2)dynamically controlling the differential pressure during stove boosting under the control strategy of"small pressure difference,high flowrate"so as to ensure safe and reliable boosting process;the boosting time is shortened to 2-4min;(3)setting up a fully automatic process of stove boosting and stove switchover that co-ordinates with the stove working system;(4)establishing a whole process automatic operation mode based on the external pressure equalization technology so as to enable the ironmaking system to run automatically according to the blast temperature entered by the furnace director,and minimize human intervention and ineffective operation.The application result of this technology on 1260 m3 and 5500 m3 BFs shows that when the air temperature is increased by 20-50℃,the gas consumption is reduced by 5％-10％under the same parameter conditions.
hot stovestove boosting and switchoverexternal pressure equalizationintelligent controlair temperaturegas consumption
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