150mw燃煤电厂烟气除尘脱硫工程设计 大学本科毕业论文.doc

设计总说明 本设计针对燃煤废气的性质，采用布袋除尘，有荷电干式吸收剂喷射法去除二氧化硫。布袋除尘具有除尘效率高、造价低、处理烟气量大、低耗能、运行稳定等特点，荷电干式吸收剂喷射法具有造价低、占地面积小、脱硫效率高、运行费用低等特点，特别适合中小型锅炉的烟气脱硫。是目前比较新的一种脱硫技术。根据要去除的污染物，采取先用布袋除尘器预除尘，再用荷电干式吸收剂喷射法脱除二氧化硫，最后再用布袋除尘器处理未气。 关键词：二氧化硫 燃煤废气 布袋除尘器 荷电干式吸收剂喷射法 abstract This design in view of the fuel coal waste gas nature, uses the clothsack dust removal, has the electrically charged doing -like absorbentspray method to remove the sulphur dioxide. The cloth sack dustremoval has the dust removal efficiency high, the construction costlow, the processing smoke magnanimous, lowly consumes energy, movessteadily grades the characteristic, the electrically charged doing-like absorbent spray method has the construction cost lowly, the areasmall, the desulphurization efficiency high, the operating cost is lowand so on the characteristic, specially suits the middle and smallscale boiler the haze desulphurization. Is the present quite new kindof desulphurization technology. According to pollutant which mustremove, adopts first uses the cloth sack dust remover pre- dustremoval, then uses the electrically charged doing -like absorbentspray method to remove the sulphur dioxide, finally uses cloth sackdust remover processing not to be mad again. Key words: Sulphur dioxide Fuel waste gas The calico sack divideds by the dust 目 录 绪论…………………………………………………………………………………………1 工艺流程论证……………………………………………………………………2 2.1废气的除尘方法……………………………………………………………………2 2.2废气脱硫的方法……………………………………………………………………9 工艺流程的选择………………………………………………………………21 过程设计计算…………………………………………………………………24 设备设施计算 ……………………………………………………………- 26 - 5.1一号布袋除尘器的计算………………………………………………………- 26 - 5.2荷电干式吸收剂喷射脱硫法的设计……………………………………………28 5.3二号布袋除尘器的设计计算 ……………………………………………………30 5.4压力损失的计算 …………………………………………………………………31 5.5风机的选择…………………………………………………………………………31 过程投资概算 …………………………………………………………………32 结语 ……………………………………………………………………………34 参考文献……………………………………………………………………………35 致辞…………………………………………………………………………………36 1 绪论 大气是人类赖以生存的最基本的环境要素之一，任何生物从它诞生之日起，就需要通过呼吸维持生命，停止呼吸就意味着生命的终结。随着人类生产和生活活动的