논문 상세보기
pp.756-763
Since HFCs does not contain Cl component, they are not harmful to the depletion of Ozone layer but require reduction especially due to the high GWP (global warming potential). The HFC 134a, known as one of typical refrigerant of HFCs is generally shown to be effectively thermally decomposed only above the temperature of 3,000oC. However, giving condition of sufficient water vapor and the temperature more than 800oC with large heating source like in calcination reactor or blast furnace, the thermal decomposition of HFC 134a will occur easily due the component of H and O contained in water vapor. In order to investigate this phenomenological finding appeared in large scale field test, a series of experimental investigation has been made for the thermal decomposition rate of HFC 134a as a function oxygen and HFC 134a flow rate for a small tubular reactor. In this experiment the wall temperature of tubular reactor was fixed to be 900oC. In order to verify and figure out the finding by experiment, numerical calculation has also been made for the detailed reaction of HFC 134a inside the tubular reactor. The comparison between experiment and numerical calculation are in good agreement each other especially for the rate of thermal destruction at the exit of the reactor. Further, considering the efficient thermal decomposition of HFC 134a in the H2O vapor environment with sufficient heating source, the application of the stoichiometric mixture of hydrogen and oxygen, that is, H2+ 1/2O2, is made numerically in the same tubular reactor, for the thermal decomposition of HFC 134a. The result appears physically acceptable and looks promising for the future method of the HFCs decomposition.
II. 수치해석 및 실험적 연구 방법
III. 결과 및 고찰
IV. 결 론
사 사
References
