MODELLING OF PYROLYSIS PROCESSES OF POLYACRYLONITRILE

• 영문명: MODELLING OF PYROLYSIS PROCESSES OF POLYACRYLONITRILE
• 발행기관: 한국화재소방학회
• 저자명: Lipanov, A.M. Kodolov, V.I. Ovchinnikova, L.N. Savinsky, S.S. Khokhriakov, N.V. Sarakula, V.L.
• 간행물 정보: 『한국화재소방학회 학술대회논문집』1997년도 International Symposium on Fire Science and Technology, 112~119쪽, 전체 8쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 1997.11.30

영문 초록

The modelling of carbon substances obtaining, for instance, carbon fibers which have high fire resistance, has been realized on the example of the polyacrylonitrile pyrolysis modelling. The pyrolysis is considered as a double step process when the formation of a liquid phase and the oxidation of substance are excluded. Three main reactions are considered: a) with the evolution of ammonia; b) with the evolution of hydrogen cyanide; c) with the evolution of hydrogen. Reactions b) and c) are sequential, and a) and b) are parallel. The problem is formulated as one-dimensional. The equations of energy, masses or concentrations, porosity and thermal conductivity are proposed. The mathematical model of the carbonization process is designed using tile kinetic characteristics of the above reactions and the thermodynamic parameters of reagents and products in these reactions. The equations received are calculated by Runge-Cutta method and by Adams method of the fourth order accuracy.