Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Chlorodifluoromethane (CHClF2) Thermal Decomposition by DC Nitrogen Plasma

질소 플라즈마 공정을 이용한 염화이불화메탄(CHClF2) 열분해

  • Ko, Eun Ha (Department of Chemical Engineering (BK21 plus program), Inha University) ;
  • Yoo, Hyeonseok (Department of Chemical Engineering (BK21 plus program), Inha University) ;
  • Jung, Yong-An (Chemical Analysis Center, Korea Testing Certification) ;
  • Park, Dong-Wha (Department of Chemical Engineering (BK21 plus program), Inha University) ;
  • Kim, Dong-Wook (Department of Chemical Engineering (BK21 plus program), Inha University) ;
  • Choi, Jinsub (Department of Chemical Engineering (BK21 plus program), Inha University)
  • 고은하 (인하대학교 화학공학과(BK21+ 프로그램)) ;
  • 유현석 (인하대학교 화학공학과(BK21+ 프로그램)) ;
  • 정용안 (한국기계전기전자시험연구원 화학분석센터) ;
  • 박동화 (인하대학교 화학공학과(BK21+ 프로그램)) ;
  • 김동욱 (인하대학교 화학공학과(BK21+ 프로그램)) ;
  • 최진섭 (인하대학교 화학공학과(BK21+ 프로그램))
  • Received : 2016.12.13
  • Accepted : 2017.02.24
  • Published : 2017.04.10
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Abstract

The nitrogen plasma thermal decomposition and recovery processes for $CHClF_2$ (Chlorodifluoromethane) refringent were investigated. The steam generator was employed to provide superheated steam reactor, supporting the decomposition reaction of refringent. Even though over 94% of R-22 was decomposed on the condition of 60 A and 9.0 kW, a higher power and specific energy density were required to achieve the complete combustion of carbon materials. In the operating condition of 60 A and 12.6 kW, $O_2$/R-22 ratio in reactants gases are a key factor to obtain much higher decomposition ratio during process. It should be noticed that injecting the mixture of $O_2$ and air was much more effective than injecting the air consisting equivalent $O_2$ amount.

염화이불화메탄($CHClF_2$) 냉매를 완전하게 분해하여 회수하기 위한 질소 플라즈마 열분해 공정이 연구되었다. 과열증기를 공급하여 분해가 보다 원활히 이루어질 수 있도록 스팀 발생기가 부착되었다. 60 A, 9.0 kW 이상의 운전 조건에서 94% 이상의 높은 분해율을 보이지만 탄소 성분의 완전 연소를 위해서는 같은 전류 대비 더 높은 power와 specific energy density를 갖춰야 함이 확인되었다. 60 A, 12.6 kW급 이상의 운전 조건에서는 $O_2$/R-22 ratio가 specific energy density에 비례하여 증가하였을 때 더 높은 분해율을 획득할 수 있었다. 반응물인 산소를 주입하는데 있어서 air를 단독으로 과량 주입하는 것보다는 산소를 air와 혼합하여 주입하는 것이 더 유용함이 밝혀졌다.

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