title: Abatement of fluorinated compounds using a 2.45GHz microwave plasma torch with a reverse vortex plasma reactor.
abstract: Abatement of fluorinated compounds (FCs) used in semiconductor and display industries has received an attention due to the increasingly stricter regulation on their emission. We have developed a 2.45GHz microwave plasma torch with reverse vortex reactor (RVR). In order to design a reverse vortex plasma reactor, we calculated a volume fraction and temperature distribution of discharge gas and waste gas in RVR by ANSYS CFX of computational fluid dynamics (CFD) simulation code. Abatement experiments have been performed with respect to SF6, NF3 by varying plasma power and N2 flow rates, and FCs concentration. Detailed experiments were conducted on the abatement of NF3 and SF6 in terms of destruction and removal efficiency (DRE) using Fourier transform infrared (FTIR). The DRE of 99.9% for NF3 was achieved without an additive gas at the N2 flow rate of 150 liter per minute (L/min) by applying a microwave power of 6kW with RVR. Also, a DRE of SF6 was 99.99% at the N2 flow rate of 60 L/min using an applied microwave power of 6kW. The performance of reverse vortex reactor increased about 43% of NF3 and 29% of SF6 abatements results definition by decomposition energy per liter more than conventional vortex reactor.
authors.affiliation: Plasma Technology Research Center, National Fusion Research Institute, 814-2 Oxikdo-dong, Gunsan-city, Jeollabuk-do, South Korea.
authors.forename: J H
authors.initials: JH
authors.lastname: Kim
authors.affiliation: Plasma Technology Research Center, National Fusion Research Institute, 814-2 Oxikdo-dong, Gunsan-city, Jeollabuk-do, South Korea.
authors.forename: C H
authors.initials: CH
authors.lastname: Cho
authors.affiliation: Plasma Technology Research Center, National Fusion Research Institute, 814-2 Oxikdo-dong, Gunsan-city, Jeollabuk-do, South Korea.
authors.forename: D H
authors.initials: DH
authors.lastname: Shin
authors.affiliation: Plasma Technology Research Center, National Fusion Research Institute, 814-2 Oxikdo-dong, Gunsan-city, Jeollabuk-do, South Korea. Electronic address: ychong@nfri.re.kr.
authors.forename: Y C
authors.initials: YC
authors.lastname: Hong
authors.affiliation: Plasma Technology Research Center, National Fusion Research Institute, 814-2 Oxikdo-dong, Gunsan-city, Jeollabuk-do, South Korea; School of Advanced Green Energy and Environments, Handong Global University, Heunghae-eup, Buk-gu, Pohang-city, Gyeongbuk, South Korea.
authors.forename: Y W
authors.initials: YW
authors.lastname: Shin
mesh_terms: D000393:Air Pollutants / Q000737:chemistry / Q000528:radiation effects; D001274:Atmospheric Pressure; D005459:Fluorides / Q000737:chemistry / Q000528:radiation effects; D057446:Hydrodynamics; D008872:Microwaves; D017672:Nitrogen Compounds / Q000737:chemistry / Q000528:radiation effects; D058626:Plasma Gases; D012666:Semiconductors; D017550:Spectroscopy, Fourier Transform Infrared; D013459:Sulfur Hexafluoride / Q000737:chemistry / Q000528:radiation effects; D014866:Waste Products
chemical_list: D000393:Air Pollutants; D017672:Nitrogen Compounds; D058626:Plasma Gases; D014866:Waste Products; C534617:nitrogen trifluoride; D005459:Fluorides; D013459:Sulfur Hexafluoride
keywords: Fluornated compounds abatement; Microwave plasma torch; Reverse vortex reactor