【作者】 付文华；

【导师】 雷小云；

【作者基本信息】 太原理工大学 ， 电力系统及其自动化， 2005， 硕士

【摘要】 随着工业的不断发展,大气污染问题越来越严重,已成为世界性问题,备受各国关注。SO₂是大气环境污染物之一,主要来自于燃煤电厂。种种数据表明,燃煤电厂SO₂的排放日益严重,给我国造成了巨大的经济损失。 烟气脱硫是一种大规模商业化应用的脱硫方式,是控制酸雨和二氧化硫污染的主要技术手段。随着湿法、半干法和干法的各种烟气脱硫技术的逐步完善和成熟,可供电厂选择的技术种类也随之不断增加,但是由于各个电厂自身具体条件不同,这就决定只有选择最为适合自身特点的脱硫技术才能达到最好的脱硫效果。由此可见,建立一套科学合理的脱硫技术经济性综合评价体系是非常有必要的。 本文较为详细的介绍了目前主流的湿法、半干法和干法多种脱硫技术,对现有烟气脱硫装置的技术要点进行了分析,对其重要技术参数做了分析评价,指出了各种技术的优点及其局限性,并且对装置的经济指标进行分析研究,找出了评价的主更多还原

【Abstract】 With the development of industiy, the atmospheric pollution is getting more and more serious, which has become a worldwide problem. SO2 from fire power plants is one of the main atmospheric pollutants. A lot of data show that SO2 given off from fire power plants is getting more terrible, which brings huge loss for our country.Flue Gas Desulfurization (FGD) is the one cosmically commercial desulfurization way in the world. It is the main technology measure to control acid rain and sulfur dioxide pollution. Since the wet, semi-dry and dry FGD are more perfect and mature, power plants may widely choose adoptabledesulfurization techniques. Under different conditions, each power plant may gain the best effect of desulfurization only when it adopts most suitable FGD technique. Obviously, it is necessary to build up a suit of scientific, reasonable, economical and integrated evaluation system for FGD techniques.In this thesis the main desulfurization technologies are introduced in detail, which includes wet, semi-dry and dry flue gas desulfurization. Author analyzed the technical essential of FGD equipment and appraised its technique parameters. In the thesis advantages and shortages of each technique are pointed out, and economical index are researched to find out the main factors for evaluation. The author confirmed a suit of index synthetical for appraising technical and economical capability of FGD techniques.The multi-level fuzzy mathematics model was presented to evaluate the comprehensive performance of Flue Gas Desulfurization (FGD) technologies for fire power plants. The first-level factors include efficiency performance, economicparameters and technical performance. Each consists of a few second-level factors. The evaluation steps are as followings. Firstly, the influence of second-level factors on assessment is expressed in membership functions. Then the first-level factors are evaluated elementarily. The comprehensive evaluation is conducted on the basis of results from elementary assessment.Based on the multi-level fuzzy mathematics model, a lot of important factors are added to the model, such as water amount, environment performance. Thus the evaluation system becomes more perfect and external. Six kinds of important FGD technologies are evaluated by using the fuzzy model. According to the rule of Maximum Membership Value, the best is wet limestone flue gas desulfurization and the second is wet ammonia process. The conclusion will provide a good reference for the fire power plants to choose flue gas desulfiirization.更多还原