| 脉冲电晕放电降解CH2Cl2的初步研究 |
| 摘要点击 1320 全文点击 2112 投稿时间：1997-02-03 |
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| 中文关键词 脉冲电晕放电 脉冲形成电容 CH2Cl2降解 BaTiO3 催化作用 |
| 英文关键词 pulse corona discharge destruction CH2Cl2 BaTiO3 |
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| 中文摘要 |
| 对高压脉冲电晕放电降解CH2Cl2(实验气体为空气中含有42.8μmolL-1的CH2Cl2)进行初步研究,比较了正负脉冲电晕降解的活性,正脉冲电晕优于负脉冲电晕。探讨了脉冲形成电容CP之值及反应器的电晕线材料对降解反应活性的影响。为进一步提高室温下CH2Cl2的降解,在反应器中加入BaTiO3为催化剂,在高压脉冲电场下,BaTiO3受激产生局部电晕,增强了电晕放电流柱,提高了反应活性,CH2Cl2的转化率达90%以上。 |
| 英文摘要 |
| in this paper,High voltage pulsed corona Discharges has been used for destruction of methlene chloride with concentration of 42 8μmol/L in air.Both positive and negative pulse generators were tested and found that the positive one can give much higher destruction efficiency than that on the nagetive one.The value of capacitors for pulse formation(CP)and the material of electrodes also influence the destruction efficiency.A packed bed corona reactor with 2—3 mm spherical BaTiO3 pellets as a catalyst was used in this experiments.Enhancement of CH2Cl2 destruction and the conversion of 90% were demonstrated.It may be attributed to the partial corona discharge induced by the contacted points between BaTiO3 pellets, and then the density of corona was enchanced.The corona and catalyst combined technology gives a better destruction efficiency compared with that without BaTiO3 catalyst. |
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