燃煤脱硫技术研究现状及发展趋势  

Research status and progress of steam coal desulfurization technologies

作　　者：苗强 

机构地区：[1]北京低碳清洁能源研究所,北京102209

出　　处：《洁净煤技术》2015年第2期59-63,共5页Clean Coal Technology

基　　金：国家高技术研究发展计划(863计划)资助项目(GB9300120009)

摘　　要：为开发具有自主知识产权的燃煤脱硫技术,论述了国内外燃煤脱硫技术现状,重点介绍了干法、湿法和半干法烟气脱硫技术主要工艺及流程,并对燃煤脱硫技术发展趋势进行展望。湿法烟气脱硫技术最为成熟,已得到大规模工业化应用,但由于投资成本高还需对工艺和设备进行优化;干法烟气脱硫技术不存在腐蚀和结露等问题,但脱硫率远低于湿法脱硫技术,须进一步开发基于新脱硫原理的干法脱硫工艺;半干法烟气脱硫技术脱硫率高,但不适合大容量燃烧设备。最后提出未来应重点创新脱硫原理;研发多联产工艺或多级脱硫工艺,重点开发生产硫酸铵化肥和硫酸镁化肥等副产品的脱硫工艺;开发低廉、高效、多功能的复合型和可再生循环利用的脱硫剂、催化剂或吸附剂及其脱硫工艺;研发新型辅助脱硫技术,扩大工艺适用范围。In order to develop steam coal desulfuration technologies with proprietary intellectual property rights,the status of steam coal desulfuration technologies at home and abroad was introduced. The core processes and flows of dry,wet and semidry method flue gas desul-furation technologies were highlighted. The results showed that,the wet method was mature and realized a large-scale industrial applica-tion,while the complicated process increased cost. The dry method didnˊt have corrosion and condensation problems,but the desulfuration efficiency was lower. The desulfuration efficiency of semidry method was higher,while it wasnˊt suitable for large-capacity combustion de-vices. At last,the author pointed out that it should focus on desulfuration principle innovation,multiple-products process or multi-stage desulfuration process development which produced the byproduct of ammonium sulfate and magnesium sulfate fertilizers. The cheap,more efficient and multifunctional composite and recyclable desulfurizer,catalyst and absorbent as well as new assistive desulfuration technolo-gies should be determined as the key research fields.

关 键 词：燃煤 烟气脱硫 湿法 干法 半干法 

分 类 号：X701[环境科学与工程—环境工程]