420th燃煤锅炉除尘脱硫系统设计.doc

中文题目:420t/h燃煤锅炉除尘脱硫系统设计
外文题目:420t/h DEDUSTING SYSTEM DESIGN OF COAL-FIRED BOILERS
毕业设计(论文)共 65 页(其中:外文文献及译文14页) 图纸共1张
完成日期 2010年6月答辩日期 2010年6月

摘要
目前,日益严重的能源危机和环保问题迫使除尘脱硫系统向节能高效的方向发展,但随着社会的发展与进步,工业产生的的烟气也随之增多,伴随而来的是烟尘,二氧化硫的严重污染。二氧化硫的排放所导致的酸雨与粉尘污染对人的身心健康的伤害都是不可设想的。本文归纳总结了燃煤锅炉烟气除尘脱硫系统的发展现状及目前存在的主要问题,主要从除尘系统的管道阻力计算,风机的选型与石灰石-石膏湿法烟气脱硫,脱硫后处理,烟囱的设计等方面进行设计。而其分析了除尘管道的阻力,对其不合理的局部阻力进行了节能改造,从阻力分析及节能计算中可以看出进行节能措施改造后的除尘系统能耗明显降低,在节约能源的同时保护了环境,并且希望可以提高燃煤锅炉烟气除尘脱硫的效率,其将会产生很好的经济效益和社会效益,还会还给我们的世界一片美丽而又干净的天空。
关键字:大气污染;除尘;脱硫;旋风除尘器;湿式石灰/石灰石-石膏法
Abstract
Currently, the increasingly serious energy crisis and environmental problems to force the system to energy efficient dust removal and desulfurization direction, but with social development and progress, industrial sources of smoke also increase, panied by the dust, sulfur dioxide serious of sulfur dioxide and acid rain caused by dust pollution damage to human health are not envisaged. This article sums up the coal-fired boiler flue gas dust removal and desulfurization system development and the current major problems, the main pipeline from the dust removal system resistance calculation, fan selection and limestone - gypsum flue gas desulfurization, desulfurization post-processing, design aspects of the design. Analysis of the pipeline and its resistance to dust, its unreasonable to local resistance made energy-saving, and energy calculation from the resistance of energy-saving measures can be seen in the dust transformed significantly lower energy consumption, saving energy while protecting the environment, and hope to increase coal-fired boiler flue gas dust removal and desulfurization efficiency, its will have good economic and social benefits, but also returned to our world a beautiful and clean and the sky.
Keywords :airpollution;dust;desulfurization ;cyclone ;wet limestone-gypsum
1. 概述
燃煤锅炉烟气污染及其防治措施
燃煤锅炉生产燃料的构成及特点
我国是燃煤大国,煤炭蕴藏量和生产量都居世界第一位。在我国的资源结构中占绝对优势。1994年末探明煤储量1145亿吨,而油气资