燃煤电厂超低排放应用现状及关键问题
发布时间：2018-09-09 11:35
【摘要】：目前我国的烟气协同治理技术路线应用时间较短,超低排放的运行和维护经验相对不足。为此,在介绍目前我国燃煤电厂超低排放改造技术现状的基础上,对我国已开展超低排放改造过程中及实际运行过程中存在问题进行了系统的总结分析,提出了合理改进运行建议,最后对我国超低排放各技术线路的经济性进行了比较分析和技术选择,并对燃煤电厂超低排放技术未来的发展趋势进行了展望。研究结果表明:相较于脱硝改造,电除尘和脱硫的超低排放改造工艺更为丰富,但都能满足烟尘、二氧化硫、氮氧化物这3项各自的排放质量浓度限值5、35、50 mg/m~3要求;超低排放各工艺技术实施过程中出现的问题主要集中在工艺设备的选型与安装、运行未达到预期、原料的运输及使用寿命、在线监测、上下游设备之间的影响等方面;燃煤装机容量越大,单位发电量的投资就越低,改造经济性也就越显著,推荐超低排放改造路线为"低氮燃烧+选择性催化还原+低低温电除尘器/电除尘器自身改造+单塔一体化技术/(脱硫改造+湿式电除尘器)";未来的超低排放发展趋势将会集中于开发低成本超低排放技术、协同脱除技术、全过程污染控制超低排放等。通过对我国燃煤电厂超低排放应用现状及关键问题的分析,可指导燃煤电厂大气污染物的控制研究及促进超低排放工艺技术的不断完善。
[Abstract]:At present, the application time of flue gas synergistic treatment technology in China is relatively short, and the operation and maintenance experience of ultra-low emission is relatively insufficient. Finally, the paper makes a comparative analysis of the economy of various technical lines with ultra-low emission and technical selection, and looks forward to the future development trend of ultra-low emission technology in coal-fired power plants. In order to enrich, but can satisfy the smoke dust, sulfur dioxide, nitrogen oxides these three respective emission mass concentration limit value 5,35,50 mg/m~3 requirements; Ultra-low emission each craft technology implementation process appears the question mainly in the craft equipment selection and the installment, the movement has not achieved the anticipation, the raw material transportation and the service life, on-line monitoring, upstream and downstream installment. The larger the coal-fired installed capacity, the lower the investment per unit generating capacity, and the more remarkable the economic efficiency of the retrofitting. It is recommended that the retrofitting route of ultra-low emission should be "low nitrogen combustion + selective catalytic reduction + low temperature electrostatic precipitator / electrostatic precipitator self-retrofitting + single tower integrated technology /(desulfurization retrofitting + wet electrostatic precipitator)"; The development trend of ultra-low emission will concentrate on the development of low-cost ultra-low emission technology, cooperative removal technology, and the control of ultra-low emission in the whole process of pollution control. It's perfect.
【作者单位】： 华北电力科学研究院有限责任公司;
【基金】：国务院安委会专家咨询委员会主持课题《火电燃煤机组快速启停调峰及安全经济运行》~~
【分类号】：X773
本文编号：2232258
[Abstract]:At present, the application time of flue gas synergistic treatment technology in China is relatively short, and the operation and maintenance experience of ultra-low emission is relatively insufficient. Finally, the paper makes a comparative analysis of the economy of various technical lines with ultra-low emission and technical selection, and looks forward to the future development trend of ultra-low emission technology in coal-fired power plants. In order to enrich, but can satisfy the smoke dust, sulfur dioxide, nitrogen oxides these three respective emission mass concentration limit value 5,35,50 mg/m~3 requirements; Ultra-low emission each craft technology implementation process appears the question mainly in the craft equipment selection and the installment, the movement has not achieved the anticipation, the raw material transportation and the service life, on-line monitoring, upstream and downstream installment. The larger the coal-fired installed capacity, the lower the investment per unit generating capacity, and the more remarkable the economic efficiency of the retrofitting. It is recommended that the retrofitting route of ultra-low emission should be "low nitrogen combustion + selective catalytic reduction + low temperature electrostatic precipitator / electrostatic precipitator self-retrofitting + single tower integrated technology /(desulfurization retrofitting + wet electrostatic precipitator)"; The development trend of ultra-low emission will concentrate on the development of low-cost ultra-low emission technology, cooperative removal technology, and the control of ultra-low emission in the whole process of pollution control. It's perfect.
【作者单位】： 华北电力科学研究院有限责任公司;
【基金】：国务院安委会专家咨询委员会主持课题《火电燃煤机组快速启停调峰及安全经济运行》~~
【分类号】：X773
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