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Coke and Blast Furnace Gases: Ecological and Economic Benefits of Use in Heating Furnaces

机译：可焦炭和高炉气体：在加热炉中使用的生态和经济效益

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摘要

Currently, the metallurgical industry in Poland is struggling with the problem of the energy use of process by-products. Coke oven gas (COG) or blast furnace gas (BFG) in accordance with the latest directives should not be a side effect troublesome to manage. They should become an energy carrier that improves the economic and ecological efficiency of the steelworks. The easiest way to manage them is combustion or co-combustion with natural gas directly in the place of production. In the article, simulations of process gas combustion were carried out in the actual operating conditions of a roller-hearth tunnel furnace for sheet hardening, using the Directed Relation Graph with Error Propagation aided Sensitivity Analysis (DRGEPSA) method. The main objective of the analyses was to determine the optimal solution for the use of COG and BFG gases in a heating furnace in the ecological and economic aspect. The conducted analysis shows that co-firing COG and BFG in appropriate proportions is the most advantageous solution. The presented savings resulting from the use of process gases and the heating of the sheet metal in the hardening furnace constitute a remarkable economic aspect of the furnace operation. Considering the growing competition on the steel market, the presented savings are a more advantageous technological solution for Polish steelworks, ensuring a lower price of the final product.
机译：目前，波兰的冶金行业正在努力解决过程副产品的能源使用问题。根据最新指令，焦炉燃气（齿轮）或高炉煤气（BFG）不应该是副作用麻烦的管理。它们应该成为一种能源载体，可提高钢铁厂的经济和生态效率。管理它们的最简单方法是与天然气直接在生产地上的天然气燃烧或共燃烧。在本文中，使用具有误差传播辅助灵敏度分析（DRGEPSA）方法的指导关系图，在用于片状硬化的滚子炉膛隧道炉的实际操作条件下进行处理气体燃烧的模拟。分析的主要目的是确定生态和经济方面在加热炉中使用COG和BFG气体的最佳解决方案。进行的分析表明，在适当比例中共用COG和BFG是最有利的解决方案。由于使用工艺气体和金属板在硬化炉中的加热而产生的储蓄构成了炉操作的显着经济方面。考虑到钢铁市场上不断增长的竞争，所提出的储蓄是波兰钢厂的技术解决方案，确保最终产品的较低价格。

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