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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 16, Number 5
JKCSEZ 16(5)
October 20, 1972 

A Study on Combustion Reaction Mechanism of Korean Anthracites

국산무연탄의 연소반응기구에 관한 연구
Jung Euy Hwang, Moo Young Son

황정의, 손무용
DTA에 의한 국산무연탄의 연소반응과정을 속도론적으로 해석할 수 있는 아래의 관계식을 도출하였다. K = (W0·Cs)/(ΔH·ΔC·SA·M)[dy/dt + A(y - ys)] 이 식을 이용하여 각탄종에 대한 활성화 energy값을 구한 결과 비흑연성탄종은 40Kcal/mole, 흑연성탄종은 45Kcal/mole로서 탄화도가 증가되면 활성화 energy값이 증가된다는 것을 알았다. 무연탄을 공기중에서 연소시킬때 온도에 의하여 d(002) X-선회절강도가 점차적으로 커지는 현상으로부터 무연산중의 일부가 층구조(무연화)로 변화됨을 알았으며 이 변화된 층구조에 생성된 CO2의 일부가 접촉분해되어 다시 CO로 환원됨을 알았다. 그리고 무연탄의 반응성을 좌우하는 활성기의 종류는 -OH, -SH, -NH, -CH2-CH3, 및 -CO, -COC-, -COOH가 존재하며 IR 로서 탄화도를 측정할 수 있었다.

The rate Constants and energies of activation for the Combustion reaction of Korean anthracites have obtained by DTA method using the following rate equation derived by authors. K = (W0·Cs)/(ΔH·ΔC·SA·M)[dy/dt + A(y - ys)] The anthracites of various ranks were treated at the different temperatures in the furnace. The probable combustion reaction mechanisms have discussed with the results obtained by the X-ray diffraction method, IR spectroscophic analysis, and gas chromatography. By the intensity of d(002) Values, it was confirmed that a parts of the amorphous carbon was converted to graphite form by heat treatment. The appreciable amounts of CO gas were expelled in the combustion process and it appeared that a little amount of the gas came from the catalytic decomposition of anthracites, The functional groups such as -OH, -SH, -NH, -CH2-CH3, -CO, -COC-. and polycondensed aromatic rings in anthracites have observed by IR spectrophotometric analysis.

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