One-dimensional model of heat-recovery, non-recovery coke ovens. Part III: Upper-oven, down-comers and sole-flues
| Autor: | Rafal Buczynski, Ronald Kim, Roman Weber, Patrick Schwöppe |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Chemical substance
Chemistry 020209 energy General Chemical Engineering Organic Chemistry Energy Engineering and Power Technology Dimensional modeling 02 engineering and technology Coke Mechanics Combustion Fuel Technology Chemical engineering Thermal radiation Heat recovery ventilation Heat transfer 0202 electrical engineering electronic engineering information engineering Flue |
| Zdroj: | Fuel. 181:1132-1150 |
| ISSN: | 0016-2361 |
| Popis: | This paper is Part III of the series (Buczynski et al., 2016) concerning the mathematical modeling of HR/NR coke ovens and it formulates one-dimensional models describing combustion and heat transfer in the space above coking-bed (upper-oven), in down-comers and in sole-flues. The space above a coking-bed is modeled using the well-stirred reactor concept while other oven branches are modeled using the long plug-flow furnace concept. The numerical simulations indicate a slow mixing-controlled combustion of gaseous mixtures in the down-comers and in the sole-flue channels. Such a behavior is typical for industrial coke ovens. Thermal radiation is the main mechanism of heat transfer and it accounts for up to 90% of the overall heat transfer rate. The mathematical model calculates also the refractory temperatures and in some sole-flue branches they approach too high values which may render oven damages. |
| Databáze: | OpenAIRE |
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