22
doi:10.3969/j. issn. 1009 3230.2017.08.007
应用能源技术
2017年第8期（总第236期）
电石渣作为循环流化床锅炉炉内和炉外
湿法脱硫剂的应用
梁娜娜
（神华神东电力重庆万州港电有限责任公司，重庆404100）
摘要：近年来，随着全国环境保护形势越来越严峻，火电机组环保排放指标监管越来越严，脱硫系统采用的脱硫剂供应及品质问题成为众多保障环保达标排放及脱硫效率的重要影响因素，同时随着全国各地火电机组的超低排放改造不断推进，脱硫设施提效改造成为环保改造重点之一，一方面稳定持续保障二氧化硫达到超低排放，另一方面降低生产运行成本成为企业首要问题，针对以上问题及实际情形，现就循环流化床锅炉炉内和炉外湿法脱硫采用电石渣作为脱硫剂进行分析，以提供相关类似机组帮助和借整。
关键词：电石；脱硫剂；应用
中图分类号：TK229.4文献标志码：B
文章编号：10093230(2017)08-002204
AnalysisoftheFixingTypeProblemsforthe3OoMWCFBBoilerSeparator
CenterTubeandImprovementMeasurementDiscussion
LIANG Na na
(Chongqing Shendong Electric Power Wanzhou Port Electricity Co. ,Ltd. Chongqing 404100,China)
Abstract: CFB boiler is an efficient and low pollution combustion technology rapidly developed in recent years. It can approach or reach the same combustion efficiency as that of PC boilers. The fuel adaptability of CFB is strong. Both of the high quality coal, such as bituminous coal and a variety of low - quality fuels can be combusted in CFB boilers. The load adjustment range is wide. The combustion is stable even under the 25% boiler load. The low temperature combustion reduce the amount of NOx formation, and the limestone can be used as additive to conduct in -fumace desulfurization at a low cost. The boiler slag can also easily be comprehensively utilized. Therefore CFB boiler is one of the best commercial clean coal technologies all over the world. Because of the above advantages, the large - scale CFB boilers has been rapidly developed. For the CFB boiler, the separation cyclone is an important component. The separation efficiency can directly affect the safe and economic operation.
Key words: 300 MW CFB boiler; Center tube; Fixing type; Improvement measurements
0引言
电石渣是在工业生产聚氟乙烯、聚乙烯醇、乙炔气等产品的过程中，电石水解后产生的废渣，长期露天堆放会污染土和浅层地下水，使土壤盐
收稿日期：2017-06-11修订日期：201707-10
作者简介：梁娜娜，女，本科、助理工程师，从事多年运行岗
位工作，担任发电运行部副值岗位。
万方数据
渍化和盐碱化，大量电石渣的堆放还挤占宝贵的土地资源。电石渣的主要成分为氢氧化钙，含量高达60%以上，另外还含有硅、铁、铝、镁等的氧化物和氢氧化物，少量的硫化物、磷化物以及乙炔气。它具有强碱性，pH值可高达14左右。电石渣相对于石灰石具有颗粒小，比表面积大，活性强等特点，用电石渣替代常规的石灰石作脱硫剂不但可以达到石灰石作为脱硫剂的脱硫效果，还能