基于高温除尘的燃煤电站多污染物协同控制技术

发布时间：2018-05-21 05:23

本文选题：燃煤 + 污染物　；参考：《华北电力大学学报(自然科学版)》2017年06期

【摘要】：随着我国环保态势的不断严峻,燃煤电厂的污染排放指标不断提高,电站锅炉的污染处理措施需要进一步升级。目前,燃煤电站主要采用烟尘、SO_2、NO_x分开治理的污染物控制方式,应对环保指标提高的主要措施也是进行单一的技术升级,如增加SCR催化剂层数、串联脱硫塔、采用湿式电除尘等。这种进行单一技术升级的方式,带来了污染治理成本升高、治污系统庞大复杂、系统稳定性下降等问题,未来随着污染排放指标的进一步提升,燃煤电厂势必采用多种污染物协同控制或一体化控制的新型污染治理方式。介绍了目前已经研发的多种污染物协同治理方法,分析了其发展状况和优缺点,并提出了一种基于高温除尘的新型燃煤污染物协同控制工艺,并就该工艺所涉及的高温除尘、NO_x臭氧氧化结合碱液吸收和新型喷淋散射吸收技术等三个关键技术的工作原理、发展状况及其用于燃煤电站锅炉污染物控制的可行性、经济性进行了分析。
[Abstract]:With the serious situation of environmental protection in our country, the pollution emission index of coal-fired power plant is increasing constantly, and the pollution treatment measures of power plant boiler need to be further upgraded. At present, the coal-fired power station mainly adopts the pollutant control method of soot so _ 2o _ x separate treatment, and the main measure to improve the environmental protection index is to carry on a single technical upgrade, such as increasing the SCR catalyst layer, series desulphurizing tower, using wet type electric precipitator and so on. This way of upgrading a single technology has brought problems such as rising pollution control costs, huge and complex pollution control systems, declining system stability, and so on. In the future, with the further improvement of pollution emission targets, Coal-fired power plants are bound to adopt a new pollution control mode of coordinated or integrated control of various pollutants. This paper introduces a variety of coordinated control methods for pollutants that have been developed at present, analyzes their development status, advantages and disadvantages, and puts forward a new technology of coordinated control of pollutants from coal combustion based on high temperature dust removal. The working principle of three key technologies, such as high temperature dedusting, no _ x ozone oxidation combined with alkali absorption and new spray scattering absorption technology, and the feasibility of applying them to the control of pollutants in coal-fired power plant boilers are also discussed in this paper. The economy is analyzed.
【作者单位】：华北电力大学能源动力与机械工程学院;中节能工业节能有限公司;
【基金】：国家重点研发计划项目(2016YFB0600701)
【分类号】：X773

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