烟气脱硫论文.doc

烟气脱硫论文 燃煤电厂石灰石-石膏湿法烟气脱硫系统 内容提要 目前，全世界烟气脱硫工艺共有200多种，经过几十年不断的探索和实践，在火电厂上应用的脱硫工艺仅在10种左右，主要包括有：石灰石－石膏湿法烟气脱硫工艺；旋转喷雾半干法烟气脱硫工艺；炉内喷钙加尾部烟道增湿活化脱硫工艺；循环流化床锅炉脱硫工艺；海水脱硫烟气工艺；电子束烟气脱硫工艺以及荷电干式喷射法烟气脱硫工艺等。其中，应用最广泛的是石灰石—石膏湿法脱硫工艺，湿式石灰石／石膏法脱硫工业化装置已有四十余年的历史，经过多年不断改进发展与完善，目前已成为世界上技术最为成熟、应用最为广泛的脱硫工艺，在脱硫市场特别是大容量机组脱硫上占主导地位，约占电厂装机容量的85％。应用的单机容量已达1000MW。神华国华台山电厂是国产600MW机组第一台采用此种技术的机组，石灰石-石膏湿法烟气脱硫技术在台电的成功应用,引起了同行各单位的关注。 Summary At present, the worlds total of more than 200 kinds of flue gas desulfurization process, after decades of constant exploration and practice, the application of the thermal power plant desulfurization process only about 10 species, mainly including: limestone - gypsum technology; rotating spray semi-dry flue gas desulfurization; limestone injection plus rear flue desulfurization humidification activation; circulating fluidized bed boiler desulfurization process; seawater flue gas desulfurization process; electron beam flue gas desulfurization and Charged dry flue gas desulfurization process and other jet. Among the most widely used is limestone - gypsum wet FGD technology, wet limestone / gypsum FGD plant has 40 years of industrial history, after years of development and improvement of continuous improvement, technology has become the worlds most mature, most applications extensive desulfurization process, in the desulfurization market, especially large-capacity unit desulfurization dominant, accounting for about 85% of plant capacity. Application of unit capacity reached 1000MW. God Hua Guohua Taishan Power Plant is a 600MW unit made use of such technology, the first unit, limestone - gypsum wet flue gas desulfurization technology in the Taiwan Power Companys success, and causing the concern of the peer units. 目录 内容提要 1 １、引言 6 2、石灰石-石膏湿法烟气脱硫系统概述 7 2．1、烟气脱硫系统原理介绍 7 2．2、FGD系统简单的工艺流程 9 2.3、FGD系统重要组成系统介绍 10 3、石灰石-石膏湿法烟气脱硫系统设计 14 3.1、烟气系统 14 3．2、 SO2 吸收系统 18 3.3、石灰石浆液制备系统 29 3.4、石膏脱水系统 31 3.5、废水处理系统 32 3.6、 工艺水系统 33 3.7、废水输送系统 35 3.8、 吸收塔紧急系统 35 ４、设计运