Zhang Xiaoxing, Cui Zhaolun, Li Yalong, Xiao Hanyan, Li Yi, Tang Ju, Xiao Song
School of Electrical Engineering, Wuhan University, Wuhan 430072, China; State Key Laboratory of Power Transmission Equipment & System Security and New Technology, College of Electrical Engineering, Chongqing University, Chongqing 400030, China.
School of Electrical Engineering, Wuhan University, Wuhan 430072, China.
J Hazard Mater. 2018 Oct 15;360:341-348. doi: 10.1016/j.jhazmat.2018.07.115. Epub 2018 Aug 3.
In this paper, the degradation rate, energy yield and the degradation by-products of SF was studied when different concentrations of NH were added. When NH concentration increased from 0 to 2%, the degradation rate efficiency(DRE) of SF increased from 60% to 97.23% under the flow rate of 50ml/min and 94W input power. The energy yield(EY) reached 4.16g/kWh. In addition, we found that increasing the flow rate to 250ml/min, the DRE decreased to 58.71%, but the EY increased to 12.55g/kWh. The main gas by-products are SOF, SOF, SO, OF, HF and NF. When the concentration of initial NH increased, the SO concentration increased while the concentrations of SOF, SOF, SOF decreased. In addition, we found that a pale yellow film formed on the surface of the reactor wall. XPS analysis showed that the solid products were mainly S, NHHF and NHHF. The emission spectra show that NH addition can effectively promote the formation of active particles and increase plasma density.The addition of NH can convert some of the sulfur and fluorine into solid products and reduce the production of toxic gases.
本文研究了添加不同浓度的NH时，SF的降解率、能量产率和降解副产物。当NH浓度从0增加到2%时，在流速为50ml/min和输入功率为94W的条件下，SF的降解率效率（DRE）从60%提高到97.23%。能量产率（EY）达到4.16g/kWh。此外，我们发现将流速提高到250ml/min时，DRE降至58.71%，但EY增加到12.55g/kWh。主要气体副产物为SOF、SOF、SO、OF、HF和NF。当初始NH浓度增加时，SO浓度增加，而SOF、SOF、SOF的浓度降低。此外，我们发现反应器壁表面形成了一层淡黄色薄膜。XPS分析表明，固体产物主要为S、NHHF和NHHF。发射光谱表明，添加NH可以有效促进活性粒子的形成并增加等离子体密度。添加NH可以将部分硫和氟转化为固体产物并减少有毒气体的产生。
