Enhancing energy recovery in the steel industry: Matching continuous charge with off-gas variability smoothing
Enhancing energy recovery in the steel industry: Matching continuous charge with off-gas variability smoothing
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DOI：
10.1016/j.enconman.2015.05.012
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发表时间：
2015-11
影响因子：
10.4
通讯作者：
F. D. Magro;A. Meneghetti;G. Nardin;S. Savino
中科院分区：
文献类型：
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作者：
F. D. Magro;A. Meneghetti;G. Nardin;S. Savino
为了从钢铁行业的废气中高效回收能量，应该对热流的高变化性进行管理。将基于高温相变材料的温度平滑装置插入连续装料电弧炉废钢预热工艺的废气管线中。为了解决过热问题，通过开发分析模型引入并选择流经容器的传热流体。通过热流体动力学模拟分析平滑系统的性能。废气最高温度的降低可以减少下游能量回收系统的尺寸和投资成本，而最低温度的提高则提高了汽轮机的负载系数，从而提高了其利用率。由于二恶英的产生，还获得了解决环境问题的好处。
In order to allow an efficient energy recovery from off-gas in the steel industry, the high variability of heat flow should be managed. A temperature smoothing device based on phase change materials at high temperatures is inserted into the off-gas line of a continuous charge electric arc furnace process with scrap preheating. To address overheating issues, a heat transfer fluid flowing through containers is introduced and selected by developing an analytical model. The performance of the smoothing system is analyzed by thermo-fluid dynamic simulations. The reduced maximum temperature of off-gas allows to reduce the size and investment cost of the downstream energy recovery system, while the increased minimum temperature enhances the steam turbine load factor, thus increasing its utilization. Benefits on environmental issues due to dioxins generation are also gained.