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관형반응기에서의 CHClF2의 열분해에 관한 연구

A Kinetic Study of the Pyrolysis of CHClF2 in a Tubular Reactor

HWAHAK KONGHAK, October 1983, 21(5), 253-262(10), NONE
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Abstract

상용공장에서 사용되는 관현반응기를 사용하여 CHClF2의 열분해 반응에 대한 반응속도론적 연구를 하였다. CHClF2는 열분해 반응에 의하여 C2F4와 HCl을 생성하며 C2F4는 polytetrafluoroethylene의 단량체로서 사용되고 있다.
반응이 층류구간에서 진행되므로 반응기 내부에 온도 및 속도의 구배가 존재하며 반경방향의 온도 구배를 측정한 결과 2차 곡선과 잘 일치함을 알 수 있었다. 각 반응조건하에서 얻어진 전환율과 온도 및 속도구배를 사용하고 확산 및 가역반응을 고려하여 활성화 에너지와 Arrhenius상수를 계산하였으며 계산과정에서 computer를 사용하였다.
계산결과
γA = k1[CHClF2]-k2[CF2:][HCl]
(k1 = A1e-E1/RT, k2 = A2e-E2/RT
로 표시되는 반응속도식에서
E1 = 48,951 cal/mole
A1 = 0.3358 1015/sec
E2 = 5,117 cal/mole
A2 = 0.1452 1014㎤/mole·sec
의 값을 얻을 수 있었다.
Kinetic study has been made on the pyrolysis of CHClF2 using a tubular reactor of a commercial plant scale under the commercial plant conditions. CHClF2 is decomposed to HCl and C2F4, which is used as a monomer of polytetrafluoroethylene.
The pyrolysis proceeds in the laminar flow range, so temperature and velocity gradient exist in the reactor.
The activation energies and Arrhenius constants were calculated by computer. Temperature gradient, velocity gradient, diffusion and reversibility of the reactions were considered in the calculation.
The parameters were found to be
E1 = 48,951 cal/mole
A1 = 0.3358 1015/sec
E2 = 5,117 cal/mole
A2 = 0.1452 1014㎤/mole·sec
in the following overall rate equation, where
γA = k1[CHClF2]-k2[CF2:][HCl]
(k1 = A1e-E1/RT, k2 = A2e-E2/RT

Keywords

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