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首页> 外文会议>International Federation of Automatic Control(IFAC) Workshop on New Technologies for Automation of Metallurgical Industry; 20031011-20031013; Shanghai; CN >TOOL FOR WHAT-IF-ANALYSIS OF THE CONDITIONS IN THE TUYERE AND RACEWAY REGION OF THE BLAST FURNACE
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TOOL FOR WHAT-IF-ANALYSIS OF THE CONDITIONS IN THE TUYERE AND RACEWAY REGION OF THE BLAST FURNACE

机译：高炉风口和赛道区域条件的假设分析工具

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摘要

A uniform distribution of blast is an important prerequisite for a balanced blast furnace operation, since the blast, after its combustion reactions with coke and injected reducing agents in the raceways, forms the hot gases that are needed for heating, reduction and melting of the iron ores. The supply of hot gas from individual tuyeres depends of the supply of blast, which reflects the flow resistances encountered in the tuyeres and behind the raceways. Not only the mass flow rates but also the gas velocities at the tuyere tips are important; a too low flow rate yields an unstable raceway and prevents the gases from entering the central part of the furnace, while a too high velocity degrades the coke and create fines that block the raceway boundaries and the dead man. A model evaluating the effect of changes in tuyere parameters and boundary conditions has been developed. The influence of changes in, e.g., the total blast volume, blast pressure, tuyere diameter, and the combustion degree of injected reductants in the tuyeres on the individual tuyere/raceway conditions has been studied by the model. An on-line version of the model has been applied to follow the evolution of the conditions in operating blast furnaces.
机译：高炉的均匀分布是平衡高炉运行的重要先决条件，因为高炉在与焦炭和滚道中注入的还原剂燃烧反应后，会形成加热，还原和熔化铁所需要的热气。矿石。来自各个风口的热气供应取决于爆炸的供应，这反映了在风口和滚道后面遇到的流动阻力。不仅质量流量重要，而且风口尖端的气体速度也很重要。太低的流速会产生不稳定的滚道，并阻止气体进入熔炉的中部，而太高的速度会使焦炭降解并产生细粉，从而阻塞滚道的边界和死者。已经开发了评估风口参数和边界条件变化影响的模型。通过该模型研究了例如总鼓风量，鼓风压力，风口直径以及在风口中注入的还原剂的燃烧程度的变化对各个风口/跑道条件的影响。该模型的在线版本已被应用来跟踪运行中的高炉条件的变化。

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