Title :
Comparison of reactor performance in the nonthermal plasma chemical processing of hazardous air pollutants
Author :
Futamura, Shigeru ; Einaga, Hisahiro ; Zhang, Aihua
Author_Institution :
Nat. Inst. for Resources & Environ., Ibaraki, Japan
Abstract :
The performances of three different types of plasma reactors such as ferroelectric packed-bed (FPB), pulsed corona (PCR), and silent discharge (SDP) were compared in the decomposition of trichloroethylene (Cl2C=CHCl, TCE), bromomethane (CH3Br), and tetrafluoromethane (CF4). Irrespective of reactors, HAP (hazardous air pollutants) reactivity decreased in the order: TCE>CH 3Br>CF4. Similar byproducts were obtained with any of the above reactors, and similar trends were observed in the HAP decomposition rate-retarding effect by gaseous oxygen and water. In the TCE decomposition, PCR was extremely effective and 1000 ppm of TCE almost completely decomposed in dry nitrogen at 0.09 s of residence time, but its performance went down in the CH3Br decomposition. Comparable performances were observed for FPB and SDP, and CF4 conversions were little higher with SDP than with FPB at the same specific energy densities
Keywords :
air pollution control; corona; plasma applications; plasma devices; HAP decomposition rate-retarding effect; HAP reactivity; bromomethane; ferroelectric packed-bed reactor; gaseous oxygen; hazardous air pollutants; nonthermal plasma chemical processing; plasma reactors; pulsed corona reactor; reactor performance; silent discharge reactor; tetrafluoromethane; trichloroethylene; water; Chemical hazards; Chemical processes; Chemical reactors; Corona; Ferroelectric materials; Inductors; Plasma applications; Plasma chemistry; Plasma materials processing; Plasma properties;
Conference_Titel :
Industry Applications Conference, 1999. Thirty-Fourth IAS Annual Meeting. Conference Record of the 1999 IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5589-X
DOI :
10.1109/IAS.1999.801642
