Exploration on gas flue ultralow emission and desulfurization wastewater zero discharge transformation in coalfired power plants

Abstract

Abstract:

In order to ensure the concentration of flu gas at the outlet of a dust precipitator meets the ultralow emission standard, a modification scheme of “1+3” electric bag composite dust collector combining with zero discharge of desulfurization wastewater is proposed, which can simultaneously reduce the emission of flue and wastewater. The transformation results show that the mass concentration of flue at the outlet of the electric bag filter is less than 10mg/m3, and the total concentration of flue discharged from the power plant is less than 5mg/m3. After the desulfurization wastewater is sprayed into the flue, the relative humidity of the flue gas increases, the flue temperature decreases and dust removal efficiency of the bag filter is improved. As the amount of desulfurization wastewater injected increases, the dust removal efficiency of the bag filter is improved.

Key words:

electric bag dust collector, ultralow emission, flue, desulfurization wastewater

TAN Zhiling1，PENG Geliang1，CHEN Quanxi2，HUANG Guoxia3，FU Jiangtao2.

Exploration on gas flue ultralow emission and desulfurization wastewater zero discharge transformation in coalfired power plants

[J]. Huadian Technology, 2019, 41(5): 52-55.

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Exploration on gas flue ultralow emission and desulfurization wastewater zero discharge transformation in coalfired power plants

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