Abstract
With the aim of controlling the problem of fine particles in the flue gas of lead-zinc smelting, a low-temperature plasma-electrocoagulation and electric bag composite dedusting experimental platform was designed by combining electrocoagulation and electric bag composite dust removal technology based on the research of low-temperature plasma technology. Firstly, the properties of fine particles in flue gas from lead-zinc smelting were analyzed, and the effects of input voltage, filter wind speed, dust concentration, and pulse-jet ash-cleaning cycle on the dust collection efficiency of the integrated device were studied. Then, the energy efficiency of the integrated technology was analyzed, and the control mechanism of the fine particles was revealed. The experimental results show that the integrated technology of low-temperature plasma-electrocoagulation and electric bag composite dust removal achieves a fine particle removal efficiency of more than 99.99% and the energy consumption per unit mass of the dust is only 0.008 kW · h/g. The integrated technology has broad application prospects and far-reaching practical significance for the lead-zinc smelting industry to achieve ultra-low emission targets for flue gas and achieve energy-saving and emission reduction effects.
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