6th燃煤锅炉脱硫除尘一体化工程设计说明书.docVIP

word格式.整理版 温江工业园区6t/h燃煤锅炉脱硫除尘一体化工程设计 摘 要 控制燃煤的途径有燃烧前脱硫，燃烧中脱硫，燃烧后烟气脱硫。目前，烟气脱硫（Flue Gas Desulfurization，缩写为FGD）是世界上唯一大规模商业化应用的脱硫技术[1]。世界各国致力于烟气脱硫研究的方法约200多种，但工业化应用的只有10多种，其中较多采用石灰石- 石膏法、双碱法和钠碱法，但由于石灰石- 石膏法、钠碱法经济成本较高，双碱法脱硫工艺在中、小型燃煤锅炉中的应用得到广泛推广[2]。 本论文选择以6t/h燃煤锅炉为对象设计烟气脱硫除尘工艺，在查阅文献和工程设计手册以及工程实践参数的基础上，确定采用双碱法，进行工艺的选择和设计计算以及设备选型。 在烟气脱硫系统中，吸收塔是核心装置[2]，当前湿法脱硫的吸收设备种类很多，其中旋流塔板是湿法脱硫的常用设备，其具有高负荷、压降低、不易堵塞及弹性宽等优点[3]，适用于吸收速率快的吸收剂，且考虑到实施企业的现状，决定采用旋流塔板作为脱硫工艺的吸收设备。烟气以逆流的方式通过塔体，增大了浆液与的接触面积，降低了所需的液气比，节约了动力费用，还减少了工艺用水量，除雾、吸收和氧化同时在一个塔内进行，有效减小了装置的体积和占地面积。 本设计在保证了脱硫系统可行性的同时，又保证了脱硫效率，使排放浓度达到了设计要求。 关键词： 燃煤锅炉，烟气脱硫，双碱法，旋流板塔，设计 word格式.整理版 Flue gas Dedust and Desulfurization Design for 6t/h boiler in Wenjiang industrial park Abstract There are many ways to control coal desulfurization before combustion, combustion desulfurization, flue gas desulfurization after combustion. At present, the FGD (flue gas desulfurization, the acronym for the FGD) is the worlds only large-scale commercial application of desulfurization technology.FGD countries in the world dedicated to research about more than 200 kinds of ways, but only 10 kinds of ways in industrial application. One more use of limestone-gypsum method, dual-alkali sodium alkali. However, due to limestone - gypsum, sodium alkali high economic cost, dual-alkali FGD process in the medium and small coal-fired boiler applications are widely promoted. In this paper, chosen to 6t / h coal-fired boiler flue gas desulfurization for the object design process, in the literature review and engineering design manual [1], as well as engineering practice parameters. Determined using dual-alkali design process of calculation and selection of equipment. In the flue gas desulfurization system, the tower is the core devices, One cyclone tower is commonly used in wet desulfurization equipment, which has a high load, low pressure drop, easy to plug and flexible width, etc., f