Decomposition of Adsorbed Xylene on Adsorbent Using Nonthermal Plasma and Gas Circulation-猫眼课题宝

DOI：

10.1109/08ias.2008.118

发表时间：

2008-10

期刊：

2008 IEEE Industry Applications Society Annual Meeting

影响因子：

--

通讯作者：

中科院分区：

其他

文献类型：

--

作者：

T. Kuroki;K. Hirai;Ryouhei Kawabata;M. Okubo;Toshiaki Yamamoto

研究了由吸附剂吸附过程和气体循环非热等离子体吸附二甲苯分解过程组成的二甲苯分解系统。采用两种类型的疏水性沸石颗粒作为吸附剂。交流60hz和20khz高压电源用于非热等离子体产生。由邻二甲苯、间二甲苯和对二甲苯组成的对二甲苯或二甲苯混合物被吸附剂吸附130 min后，产生非热等离子体，以气体循环分解吸附的二甲苯。对于对二甲苯，在交流60hz等离子体条件下，吸附二甲苯对CO和CO2（乙氧柯）的转化率达到43%，在交流20khz等离子体条件下，吸附二甲苯对CO和CO2（乙氧柯）的转化率达到70%，处理60 min后，能量效率（Ed）分别为0.26和0.75 g/kWh。二甲苯混合物在交流60hz等离子体作用90 min和交流20khz等离子体作用75 min时，得到的乙氧克斯含量分别为69%和48%，Ed分别为0.27和0.43 g/kWh。交流20khz等离子体的能量效率优于交流60hz等离子体，但交流20khz等离子体不稳定，会产生NOx作为副产物。从处理后废气的FTIR分析可以看出，N2O是由交流60hz等离子体产生的。

The xylene decomposition system which consists of adsorption process by adsorbents and adsorbed xylene decomposition process using nonthermal plasma with gas circulation is investigated. Two types of hydrophobic zeolite pellets are used as adsorbent. The ac 60 Hz and 20 kHz high voltage power supplies are employed for nonthermal plasma generation. After p-xylene or xylene mixture which consists of o-, m- and p-xylene is adsorbed by adsorbent for 130 min, nonthermal plasma is generated in order to decompose adsorbed xylene with gas circulation. For p-xylene, the conversion ratios of adsorbed xylene to CO and CO2 (etacox) reach 43% for ac 60 Hz plasma and 70% for ac 20 kHz plasma during 60 min treatment and then the energy efficiencies (Ed) are 0.26 and 0.75 g/kWh, respectively. As for xylene mixture, etacox of 69 and 48% are obtained by ac 60 Hz plasma for 90 min and ac 20 kHz plasma for 75 min, and Ed are 0.27 and 0.43 g/kWh. Ac 20 kHz plasma is better energy efficiency than that of ac 60 Hz plasma, however, ac 20 kHz plasma is unstable and generates NOx as byproduct. From FTIR analysis of exhaust gas after treatment, it is clarified that N2O is generated by ac 60 Hz plasma.