Numerical analysis on a thermal plasma reactor for HFC-23 treatment

Title
Numerical analysis on a thermal plasma reactor for HFC-23 treatment
Authors
최수석조규영우주만임종주이중기
Keywords
Thermal plasma; HFC-23; Greenhouse gas; Thermal decomposition; Reactor design; 2012개인평가에 반영할것
Issue Date
2011-09
Publisher
Current applied physics
Citation
VOL 11, NO 5, S94-S98
Abstract
It was simulated that thermal flow characteristics inside a thermal plasma reactor for an abatement ofHFC-23 (trifluoromethane, CHF3) which is a kind of greenhouse gas. Effects of arc current and length of reaction tubes on the decomposition process were numerically analyzed to find out a suitable plasma torch operating condition and an optimal reactor design. Numerical results were in good agreements with experimental results on measured temperature at reactor exit and a damaged appearance of the inner reaction tube after the practical decomposition process. A sufficiently large area and high temperature over 1500 K for HFC-23 decomposition was predicted in the torch operation with an arc current of 50 A. In this condition, a high decomposition rate over 99.5%was achieved in spite of a short residence time estimated around 50 ms. And it was revealed that not only the length of the inner reaction tube which is continuously contact with high heat flux from the thermal plasma jet but also the outer tube length is important for a durable operation of the reactor system.
URI
http://pubs.kist.re.kr/handle/201004/41418
ISSN
1567-1739
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KIST Publication > Article
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