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随着光学探测技术水准的进步，利用光学探测技术实现冶金行业中的测量控制已经成为新型冶金控制的手段。在冶金工艺中，转炉炼钢是一个重要的环节。转炉炼钢终点的精确控制是世界冶金行业一直亟待解决的问题。氧气顶吹转炉炼钢是目前世界上最主要的炼钢方法。转炉终点的准确控制在提高炼钢质量、节能减排、降低生产成本和提高吹炼自动化水平等方面均具有重要意义。目前，传统的转炉炼钢终点技术则难以实现对终点碳、温度的准确控制。在吹炼过程中，转炉炉口火焰的光谱数据隐含着炉内碳含量和温度方面的信息。为此，本文重点提出了针对转炉炼钢的光谱采集系统的构建。59582
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毕业论文关键词 转炉炼钢 终点控制 光谱采集 炉口火焰 特征光谱
Title The design of spectrum acquisition system on Basic Oxygen Furnace
Abstract With advances in optical detection technology, using optical detection technology for the metallurgical industry in the measurement and control has become a new means of metallurgical control. In the metallurgical process, the Basic Oxygen Furnace (BOF) is an important link. BOF endpoint’s precise control has been the world's problems to be solved in the metallurgical industry. BOF steelmaking is the most important steel-making methods in the world. The accurate control of BOF end point has important significance for energy conservation, the reduction the production costs and improvement of the blowing automation’s level. Currently, the traditional BOF endpoint technology is difficult to achieve on controlling the end-point carbon and the temperature accurately. It was found that the furnace mouth flame spectral data implied the information of carbon content and temperature of the furnace steel. Therefore, this thesis emphasizes to propose the construction of spectrum acquisition system on BOF.
Keywords Basic Oxygen Furnace end-point spectrum acquisition furnace mouth flame characteristic spectrum
目 次
1 绪论 1
1.1 研究背景及研究意义 1
1.2 转炉炼钢终点控制技术现状 2
1.2.1 传统终点控制技术 . 2
1.2.2 人工经验控制 . 2
1.2.3 静态控制 . 3
1.2.4 动态控制 . 5
1.2.5 光信息控制 . 7
1.3 本文主要内容 . 10
2 炉口火焰光谱分析与获取 . 12
2.1 火焰光谱理论分析 . 12
2.1.1 火焰辐射 12
2.1.2 辐射度学中的量和单位 12
2.1.3 辐射定律 13
2.1.4 光谱信息用于文本研究的可行性分析 15
2.2 光谱获取系统 . 16
2.3 炉口火焰的光谱信息采集区域选择 . 20
2.4 光谱仪获得的实际辐通量 . 21
2.5 本章小结 . 23
3 转炉炉口光谱数据采集系统的构建 . 24
3.1 光谱数据采集系统的的设计 . 24
3.1.1 微型光纤光谱仪概述 24
3.1.2 光谱数据显示系统 26
3.1.3 光谱数据存储系统 27
3.2 LabVIEW 与MATLAB的通信接口 . 28