收稿日期:2024-01-27 修回日期:2024-02-26
针对我国含油污泥产生量大、成分复杂、处置困难等问题,本文提出了在大型燃煤锅炉中掺烧含油污泥的技术路线。首先,对掺烧含油污泥的技术方案进行数值模拟,发现掺烧后锅炉内温度场分布变化不大,主燃区温度轻微升高;当部分燃料由煤粉替换为含油污泥时,由于后者着火快、燃尽高,可以提高主燃区燃烧温度,进而促进NO_x被还原,因此减少了NO_x排放;掺烧含油污泥后,飞灰含碳量降低,锅炉效率提高。随后,该技术在330 MW机组上进行了工程应用,实测结果表明,在120 MW负荷下,油泥掺烧后NO_x排放值由425 mg/Nm^3降低至376 mg/Nm^3,锅炉效率由原来的91.90%提高到92.13%,因此,该掺烧技术具有较好经济性和环保性,且具有较好的推广应用前景。
收起-顾永平, 吴剑波, 张凡志, 张海丹, 张辉, 张光学. 大型燃煤锅炉掺烧含油污泥的数值模拟及工程应用[J/OL]. 能源环境保护: 1-7[2024-03-13]. http://kns.cnki.net/kcms/detail/33.1264.X.20240311.1743.007.html.
GU Yongping, WU Jianbo, ZHANG Fanzhi, ZHANG Haidan, ZHANG Hui, ZHANG Guangxue. Numerical simulation of oily sludge blending in large coal-fired boilers and its engineering application[J/OL]. Energy Environmental Protection: 1-7[2024-03-13]. http://kns.cnki.net/kcms/detail/33.1264.X.20240311.1743.007.html.
GU Yongping, WU Jianbo, ZHANG Fanzhi, ZHANG Haidan, ZHANG Hui, ZHANG Guangxue. Numerical simulation of oily sludge blending in large coal-fired boilers and its engineering application[J/OL]. Energy Environmental Protection: 1-7[2024-03-13]. http://kns.cnki.net/kcms/detail/33.1264.X.20240311.1743.007.html.