关 键 词：

脱硫 吸收塔 设计 全套 cad 图纸

资源描述：

内容简介：

脱硫塔设计摘 要:考虑到对煤种及锅炉负荷的适应性、运行与维修的方便性、吸收剂的廉价性和来源广范性、副产品具有的综合利用价值性 (即使抛弃搁置也无二次污染)，在比较了几种不同工艺的特性以及它们中国的实际应用情况之后，本文选择了顺应吸收塔发展潮流的喷淋塔作为设计对象来实现石灰石石膏湿法烟气脱硫。这套工艺采用了脱硫、除尘和就地强制氧化同时完成的高性能化组合塔型。设计塔内烟气的流速为3 m/s ，液气比为18 L/m3，钙硫比为1.04。喷淋塔主体、除雾器和再喷淋层依次垂直布置，这样塔的整体布局将会更加紧凑，占地面积较小。对于脱硫产物石膏,则采取了回收与抛弃兼容的处理方法。塔内脱硫工作流程为：经释热降温后的烟气自下而上的进入吸收塔的逆流段，与依靠重力降落的高密度循环喷淋液滴进行高效接触，气液两相在空间完成传质和吸收的过程。然后洁净的烟气经过除雾器的除雾和再热器的加热后从烟囱中被释放到大气当中去。吸收浆液在塔下部的氧化槽中被氧化成石膏浆液，然后进入石膏浓缩脱水系统。关键词：湿法烟气脱硫，脱硫塔，石灰石石膏法Design of desulfurize towerAbstract:Considering the adaptability to coal type and loads, the convenience of operation and maintenance, the relatively cheap and easy-obtaining absorbent,the comprehensive utilization of by-product (no secondary pollution, even abandoned gypsum), after comparing different technical process features and the application situation in China, the spray scrubber, which is the developing trend of absorption tower, is designed for CaCO3-CaCO4 wet flue gas desulfurization in this paper. The technology uses the high-performance integral spray scrubber, in which the function of desulfurization, dedusting, and forced oxidation on the spot are possessed simultaneously. The designed velocity of flue gas in countercurrent section is 3m/s. The liquid/gas ratio is 18L/m3 and Ca/S ratio is 1.04.Spray tower, mist eliminator, reheater are arranged one on top of another vertically, therefore the tower area layout of it is more compact and the occupied land area is smaller. For the desulfurization products,gypsum, the treatment of part being recovered and part being abandoned was adopt. Working principle of it is that the flue gas flows upwards into the scrubber countercurrent section after heat being released and temperature being lowered, reacts with high-density circulating slurry drops downwards fallen by gravity, gas and slurry two phases finish the process mass transferring and absorption reaction. Then the clean flue gas passed through mist eliminator and reheater, and discharges to the lower oxidation sump, and then enters gypsum concentration and dehyd