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为了探讨催化剂与脉冲放电等离子体共同作用来处理恶臭气体的效果,采用V2O5/γ-Al2O3催化剂与脉冲放电等离子体共同作用来处理了恶臭气体甲硫醚,并探讨了反应中催化剂与脉冲放电等离子体的协同性及工艺参数对降解反应的影响。实验结果表明:电晕放电具有改变催化剂气-固相吸附平衡、减少吸附容量的作用,处理恶臭气体时可通过添加催化剂吸附-气体浓缩环节来提高降解反应的能量利用率;催化剂与脉冲放电等离子体共同作用比单一脉冲放电等离子具有更高的甲硫醚去除率,同时催化剂的填充通过改变介电性及电场强度使反应获得更大的能量,催化剂颗粒表面发生的强烈放电促进了降解反应的进行;在一定电压范围内,通过提高峰值电压、增加气体停留时间可有效提高甲硫醚去除率;当峰值电压为22 k V、甲硫醚体积分数为315×10-6、体积流量为550 m L/min时,甲硫醚去除率可达84.12%。催化剂协同脉冲放电等离子体能够有效处理恶臭气体甲硫醚。
In order to investigate the effect of catalyst and pulse discharge plasma on the treatment of malodorous gases, the odoriferous methyl sulfide was treated by V2O5 / γ-Al2O3 catalyst in combination with pulsed discharge plasma. The effects of catalyst and pulsed discharge plasma Synergetic effect of body and process parameters on degradation reaction. The experimental results show that the corona discharge has the effect of changing the adsorption equilibrium of gas-solid phase and reducing the adsorption capacity. The energy utilization rate of the degradation reaction can be increased by adding catalyst adsorption-gas condensation when the malodorous gas is treated. The synergistic effect of the two agents on the surface of the catalyst particles has a higher removal rate of dimethylsulfide than that of the single pulse discharge plasma. At the same time, the filling of the catalyst increases the energy of the reaction by changing the dielectric properties and electric field strength. The intense discharge on the surface of the catalyst particles promotes the degradation reaction ; When the peak voltage is 22 kV, the volume fraction of dimethylsulfide is 315 × 10-6 and the volume flow rate is 550, the peak voltage and the gas residence time can be increased effectively by increasing the peak voltage. When m L / min, dimethyl sulfide removal rate of up to 84.12%. The catalyst synergistically pulsed discharge plasma can effectively treat the stench gas methyl sulfide.