Department of Civil and Environmental Engineering, Southern Methodist University, Dallas, TX, 75025, USA.
Center for Research on Environmental Diseases, University of Kentucky, Lexington, KY, 40536, USA.
Environ Monit Assess. 2018 Apr 15;190(5):284. doi: 10.1007/s10661-018-6653-z.
In this study, there were 54 municipal solid waste (MSW) moving-grate incineration power plants investigated in China. The flue gas emission data of CO, NO, SO, HCl, and particles were collected as monthly means directly from the plants for 12 consecutive months from 2011 to 2012, as well as the annual cumulative consumption data of activated carbon, CaO/Ca(OH), and #0 diesel. Eventually, 37 out of the 54 plants were evaluated on the overall performance using the Mahalanobis distance. As a result, there were 31 total outliers (potential errors or risks in the operation) detected from the flue gas emission data in 9 out of 37 plants. The results revealed that the Mahalanobis distance was an effective method to evaluate the overall performance of MSW moving-gate incineration from the massive normal-looking flue gas emission data. It was also illustrated that reducing the frequency of the load changes was more important than reducing the magnitude of the load changes, especially in the range between - 10 and 10% of the load changes. Furthermore, the average consumption of activated carbon, CaO/Ca(OH), and #0 diesel in the MSW moving-grate incineration power plants was 0.32 ± 0.13 kg, 7.75 ± 3.06 kg, and 0.15 ± 0.12 kg per ton of MSW, respectively.
本研究调查了中国 54 座城市生活垃圾（MSW）移动炉排焚烧发电厂。2011 年至 2012 年，我们连续 12 个月逐月直接从工厂收集 CO、NO、SO、HCl 和颗粒物的烟气排放数据，以及活性炭、CaO/Ca(OH)和#0 柴油的年累计消耗量数据。最终，使用马哈拉诺比斯距离对 54 座工厂中的 37 座进行了整体性能评估。结果表明，在 9 座工厂中的 37 座工厂中，从烟气排放数据中检测到 31 个总异常值（操作中的潜在误差或风险）。结果表明，马哈拉诺比斯距离是评估大量看似正常的烟气排放数据中 MSW 移动炉排焚烧整体性能的有效方法。还表明，减少负荷变化的频率比减少负荷变化的幅度更为重要，尤其是在负荷变化-10%到 10%的范围内。此外，MSW 移动炉排焚烧发电厂中活性炭、CaO/Ca(OH)和#0 柴油的平均消耗量分别为每吨 MSW 0.32±0.13 公斤、7.75±3.06 公斤和 0.15±0.12 公斤。
