粉尘对介质阻挡放电脱硫脱硝效率影响的研究

Investigation on the Effects of Dust on the Desulfurization Denitration Efficiency by Using Dielectric Barrier Discharge

火电厂燃煤中排放的硫氮氧化物造成大气污染的主要成分之一,介质阻挡放电是一项有效的同时脱硫脱硝技术,研究了粉尘在介质阻挡放电空间中的电场荷电与扩散荷电;分析粉尘对脱硫、脱硝效率的影响,得出粉尘本身对脱硫有促进作用,提升脱硫效率3%左右,粉尘对NO没有脱除作用,随着输入电压提高,粉尘荷电造成的能量消耗影响减小,粉尘消耗多余能量降低放电空间温度使脱除率有所提升。

Sulfur and nitrogen oxides emissions from coal-fired thermal power plants are one of the main components of air pollution. Dielectric barrier discharge is an effective simultaneous desulfurization and denitrification technology. The electric field electrically charged and diffusion charging of in the dielectric barrier discharge space charged was studied. The effect of dust on the desulphurization and denitration efficiency was analysed. It is concluded that dust has promoting effect to desulfurization, improving the desulfurization efficiency is about 3 % ; dust has no removal effect on the NO. As the input voltage risesing, the energy consumption caused by dust has reduced and dust consuming the extra energy to reduce the discharge space temperature, result in the increment of De-NO efficiency.