低温等离子体净化甲醛气体的实验研究

Decomposition of Formaldehyde With Non-thermal Plasma

摘要: 采用低温等离子体技术净化甲醛气体.主要考察了甲醛去除效率和绝对去除量与电源施加电压、初始浓度、气体流速和功率之间的关系,并对低温等离子体技术去除甲醛的机理进行了分析.实验结果表明,其他条件稳定不变的情况下,甲醛的去除效率随着电源施加电压和功率的提高而提高;随着初始浓度和气体流速的降低而升高;甲醛的绝对去除量随电源施加电压、初始浓度、气体流速和功率的增加而增加.在实验条件下,每处理1 mg甲醛气体需消耗电功约为0.092 kwh.

Abstract: Decomposition of formaldehyde with non-thermal plasma was studied in the paper.The relationships between formaldehyde removal efficiency and applied voltage,initial concentration,velocity of flow,supplied power were mainly investigated.The removal mechanisium of formaldehyde was studied in the plasma.The experimental results showed that the removal efficiency of formaldehyde increased with increasing applied voltage and power,and increased with decreasing initial concentration and velocity of flow under the same conditions.At the same time,absolute removal quality of formaldehyde increased with increasing applied voltage and power,initial concentration and velocity of flow.Under experimental conditions,the power of 0.092 kWh applied to remove formaldehyde per milligram.