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含水/脱水市政污泥与煤混烧的NO和SO2排放特性研究
NO and SO2 Emission Behaviors of Co-Combustion of Power Coal and High Water or De-Water Sewage Sludge
【摘要】 通过2种市政污泥分别和某电厂实际用煤混烧的试验,研究了污泥的种类、含水率、掺烧比例对混烧时NO和SO2排放的影响规律。试验结果表明:2种污泥与煤掺烧所体现的NO和SO2排放特性有所区别,西污泥的NO和SO2排放总量均要高于东污泥。污泥的含水率会影响排放特性,西污泥含水率越高,NO排放相应增加,SO2的排放减小;而东污泥含水率越高,NO的排放会相应的减小,SO2也会减小。随着污泥掺烧比的增加,污泥NO的排放会对应的增加,而对于东污泥的SO2排放,10%的掺混比例能使得SO2排放达到最大。
【Abstract】 In this paper, the experiments of two kinds of municipal sludge and a typical power coal were carried out, and the effects of the types of sludge, moisture content and mixed proportion of co-combustion on NO and SO2 emissions were studied. The experimental results show that the emission characteristics of NO and SO2 from co-combustion of two kinds of sludge with coal are different, and the total emission of NO and SO2 of the western sludge is higher than that of the eastern sludge. The moisture content of sludge will affect the emission characteristics. The higher the moisture content of western sludge, the higher the NO emission and the lower the SO2 emission. However, the higher the moisture content of the eastern sludge, the less NO and SO2 will be emitted accordingly. With the increase of sludge ratio, the NO emissions will increase correspondingly, while for the eastern sludge, 10% mixing ratio can make SO2 emissions reach the maximum in the experimental case.
【Key words】 sewage sludge; coal; co-combustion; moisture content; NO; SO2;
- 【文献出处】 锅炉技术 ,Boiler Technology , 编辑部邮箱 ,2022年01期
- 【分类号】X703
- 【被引频次】2
- 【下载频次】200