Heat Transfer Analysis in the Regenerator of Coke Oven

by Ren-Hao Yang, Wei-Ming Su, Jau-Huai Lu

Publisher - National Chung Hsing University Taichung, Taiwan

Category - Engineering & IT

Coke oven is an energy intensive facility because converting coal to coke consumes a lot of energy. A regenerative heat exchanger is used to recover the waste heat of the conversion process to improve the total energy efficiency. Air at room temperature flows through the heat exchanger for heating, and then enters oven for combustion. After that high temperature gas flows through another regenerative room, recycling waste heat. Bricks are used as the medium for energy storage. The recovery efficiency depends on the brick property, porosity, flow velocity, and dimension of the heat exchanger. The purpose of this study is to analyze the heat transfer process in the regenerative room to evaluate its performance. One dimensional unsteady heat transfer model was used in this paper to calculate the temporal and special variations of brick and gas temperature inside the regenerator.

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