包头地区15m3高炉喷煤系统设计.doc

高等职业技术学院 毕业设计说明书 设计题目：包头地区1500m3高炉喷煤系统设计 学　　　　号：_________________________ 姓　 　名：_________________________ 专 业 班 级：_________________________ 2011年06月09摘 要 高炉喷煤是20世纪60年代炼铁技术的重大进步，是降低焦比，强化冶炼，节能环保和提高经济效益的有效措施，同时可以降低炼铁成本等优点。经过几十年的探究，高炉喷煤技术得到了广泛的应用，已经成为炼铁时代的一项重大的技术，新建的炼铁厂都采用喷煤技术。本设计是结合包头地区原料条件和对目前国内外先进高炉喷吹工艺的学习，以及各大炼铁厂的实践应用中得到的结论。本设计采用直接喷吹技术，同时采用MPS 1713型中速磨煤机以及PPCS 96气箱式脉冲布袋收粉器，喷吹系统中采用高压喷吹的三罐重叠单系列喷吹。选用流化罐混合器使煤粉低速浓相输送，喷吹系统采用多管路向高炉喷吹，可以单独调节各个风口喷煤量，可以富氧，强化冶炼。煤粉计量与控制通过总喷煤量与喷煤单支管的计量与调节，以及计算机的精确控制系统，提高了喷煤的准确性。喷吹系统密封性好，防止煤气中毒。喷吹系统安装有防爆孔，防止爆炸产生的巨大威力对人员以及设备的危害，提高了喷吹的安全性。在本设计具有工艺先进，流程简单，连续性好，灵活性强，设备密封性能好，煤粉输送速度低、浓度高以及煤粉计量精度高，喷吹安全性高等特点。 关键词：高炉；喷煤；中速磨；喷吹罐 Baotou region blast furnace 1500m3 coal conveying system design Abstract Coal is blast furnace ironmaking 1960s major progress, is technology, strengthening smelting, reducing coke saving energy and environmental protection and effective measures to improve the efficiency of the economy, and to reduce cost of iron etc. After decades of inquiry, blast furnace coal technology, a wide range of applications, has become a major iron age of technology, new rebuilt.as coal injection technology is used. This design is a combination of material condition of baotou regions at home and abroad with advanced injection process of learning blast furnace, and the application of the big iron conclusion from the practice. This design USES the direct injection technology, while using MPS 1713 type medium-speed mill and PPCS 96 gas box pulse bag charge powder injection system implement, the high pressure injection single series of three cans of overlapping injection. Choose fluidization cans mixer speed to dense phase pulverized coal injection system adopts the conveying, how to blow, blast furnace pipe can be adjusted singlely.ensure each tuyere pulverized coal injection rate, can rich oxygen, strengthening smelting. Coal measurement and control through the general pulverized coal injection rate and coal injection of single pipe, and com