某电厂石灰石石膏湿法脱硫系统设计

某电厂石灰石石膏湿法脱硫系统设计

XXXXX大学本科毕业设计说明书× 某电厂石灰石-石膏湿法脱硫系统设计专业环境工程班级环工学号学生姓名指导教师完成日期年月日× 某电厂石灰石-石膏湿法脱硫系统设计× 摘要：据统计，我国目前约有30万台中小型燃煤工业锅炉，耗煤量占全国原煤产量的1/3。而这些锅炉中，部分没有安装脱硫设备，致使这些地区酸雨频频发生，严重危害了工农业生产和人体健康。因此，烟气脱硫是当前环境保护的一项重要工作。目前，世界上烟气脱硫工艺达数百种之多。脱硫装置的分类有许多种，按脱硫产物的价值可分为回收法和抛弃法，按吸收剂和脱硫产物的状态可分为湿法、半干法和干法。常见脱硫工艺有：氨法脱硫、石灰石-石膏法、炉内喷钙、旋转喷雾法、循环硫化床。在这些脱硫工艺中，有的技术较为成熟，已经达到工业应用的水平，有的尚处于试验研究阶段。在以上几种脱硫工艺中，以石灰石-石膏湿法脱硫工艺最为成熟、可靠，该技术目前在世界上也是应用最多的脱硫工艺。

本次设计主要设计的是一套除尘脱硫系统，该系统主要包括除尘系统、烟气系统、吸收系统、吸收剂浆液制备系统、石膏脱水系统以及废水处理系统，并重点对电除尘器、吸收系统、吸收剂浆液制备系统和石膏脱水系统中的主要设备进行计算设计选型。

关键词：湿法石灰石－石膏法；电除尘器；烟气脱硫；主

体设备计算 Wet limestone gypsum flue gas desulphurization system design of the Power Plant Abstract: According to statistics, now china has about300,000 medium and small coal fired industrial boiler, coal consumption accounts

for the national coal production1/

3、some of these boilers do not have to install desulphurization equipment resulting in these areas of

acid rain happens again and again, serious harm to the industrial and agricultural production and human health、Therefore, flue gas desulphurization is the current environmental protection an important work、 At present, the flue gas desulphurization process has many kinds、Desulphurization device classification has many kinds, according to the desulphurization products value can be divided into recycling method and abandonment method, according to the absorbent and desulphurization products

of the state can be divided into wet and dry, semi-dry、mon desulphurization process is: ammonia desulphurization, limestone-gypsum, spraying calcium inside furnace,

rotating spray method, circulating fluidized bed、 In the above several desulphurization technologies, with wet

limestone gypsum flue gas desulphurization technology the most mature, reliable, the technology currently in the world, but also the application of most of the desulphurization process、 In the desulphurization process, the technology is more mature, have reached the level of industrial application, some are still at the stage of experimental study、 The design of my design is a set of dust removal and desulphurization system, this system mainly includes the dust removal system, flue gas system, the absorption system, the absorbent slurry preparation system, gypsum dewatering system and waste water treatment system, and focus on electric precipitator, absorption system, absorbent slurry preparation system and the gypsum dewatering system of main equipment calculation of the design type selection、Key words: wet limestone-gypsum method； electric dust collector； flue gas desulphurization； main equipment calculation 目录

第一章文献综述1

1、1 烟气除尘脱硫的背景1

1、2 烟气脱硫的目的及意义1

1、3 课题研究的主要内容2