海勃湾发电厂烟气脱硝工艺技术方案选取及效果评价

发布时间：2018-04-20 16:16

本文选题：燃煤电厂 + 氮氧化物　；参考：《内蒙古大学》2016年硕士论文

【摘要】：近年来,国内环保形势日趋严峻,国家对环境保护更加重视,连续发布了《大气污染防治行动计划》十条措施和新修订《中华人民共和国大气污染防治法》,促使许多火电厂开展脱硫除氮的技术改造,烟气脱硝工艺种类日趋繁多,然而脱硝技术改造通常涉及成本、技术、社会、资源与环境等诸多方面,各种脱硝工艺优缺点不同,不同的火电厂又存在自身特点。因此,如何立足于燃煤电厂的生产运营,科学合理的分析脱硝技术改造中涉及的相关因数,评估和优选成本低、效益好、经济适用且技术先进、去除率高对环境影响小的脱硝技术方案,具体很强的现实意义。本文基于海勃湾发电厂脱硝改造工程项目实际,使用的SCR氮氧化物排放控制技术为实例。监测数据显示,在机组工况负荷为92.7%～100.0%,平均负荷为98.7%的情况下,脱硝设施甲侧进口最大折算浓度为428mg/m3,出口NOx最大排放浓度为79.3mg/m3。乙侧进口最大折算浓度为393.4mg/m3,出口NOx最大排放浓度为75.8mg/m3,总出口NOx最大排放浓度为95.9mg/m3。脱硝设施甲侧脱硝效率为81.2%-83.1%、乙侧脱硝效率为80.1%-80.6%。氨区氨气无组织排放监测结果最大值为0.113mg/m3。最后,对氮氧化物防治技术建设和运行进行科学的综述、对比、评估,为其选择经济、适用的脱硝改造技术提供了合理的依据,为电力企业开展的氮氧化物治理提供一份参考。
[Abstract]:In recent years, the situation of environmental protection in China has become increasingly serious, and the state has paid more attention to environmental protection. Ten measures of the Action Plan for the Prevention and Control of Air pollution and the new revision of the Law of the people's Republic of China on the Prevention and Control of Atmospheric pollution have been issued in succession, which has prompted many thermal power plants to carry out the technical transformation of desulfurization and nitrogen removal, resulting in a growing variety of flue gas denitrification processes. However, denitrification technology usually involves many aspects, such as cost, technology, society, resources and environment. The advantages and disadvantages of various denitrification processes are different, and different thermal power plants have their own characteristics. Therefore, how to base on the production and operation of coal-fired power plant, scientifically and reasonably analyze the related factors involved in denitrification technology transformation, evaluate and select the low cost, good benefit, economic application and advanced technology, The technical scheme of denitrification with high removal rate and little environmental impact is of great practical significance. Based on the practice of denitrification project in Haibo Bay Power Plant, the SCR nitrogen oxide emission control technology is used as an example. The monitoring data show that under the condition that the working load of the unit is 92.7% and the average load is 98.7%, the maximum conversion concentration of the inlet of the denitrification facility is 428 mg / m ~ 3, and the maximum emission concentration of the export NOx is 79.3 mg / m ~ (3). The maximum commutation concentration of B side is 393.4 mg / m ~ (3), the maximum emission concentration of export NOx is 75.8 mg / m ~ (3), and the maximum emission concentration of total export NOx is 95.9 mg / m ~ (3). The denitrification efficiency of the denitrification facility was 81.2% -83.1% and 80.1% -80.6% for the second side denitrification facility. The maximum value of monitoring ammonia gas emissions in ammonia region is 0.113 mg / m ~ (3). Finally, the construction and operation of nitrogen oxide prevention technology are summarized, compared and evaluated, which provides a reasonable basis for its choice of economy and suitable denitrification technology, and provides a reference for the nitrogen oxide treatment carried out by electric power enterprises.
【学位授予单位】：内蒙古大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：X773

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