Development of gas dry cylindrical electrostatic precipitator for large converters
GUO Qichao
LI Yonghui
ZHANG Juan
MA Yongdong
YANG Lifan
Abstract：In response to the demand for large-scale converter and accelerated smelting pace,China National Heavy Machinery Research Institute Co.,Ltd.has successfully developed a large-diameter gas dry cylindrical electrostatic precipitator for the purification and recovery of primary flue gas from converters.The electrostatic precipitator adopts an explosion-resistant plug-flow structure and integrates multiple key technologies,including numerically simulated design of gas distribution devices,optimized configurations of electrode plates and wires(ZT24 anode plates with upgraded B8 and V15 cathode wires),a novel ash-scraping device,an improved cathode rapping system,and an efficient full-DC high-voltage power supply with variable impedance.Engineering applications shows that the equipment can achieve the ultra-low emission target of stable dust concentration in flue gas below 10 mg/Nm3,and meet the requirements for long-term safe and stable operation.At present,cylindrical electrostatic precipitators with a diameter of 13.5 m have been successfully applied in multiple large-scale converter projects,significantly improving dust removal efficiency and system reliability.
Keywords：dry gascylindrical electrostatic precipitatorlarge-diameterultra-low emissions
Publication Date：2025-07-20
Online Publishing Date：2025-09-08(First online date of this platform, not the publication date of the document)
Pages：5( 105-109 )