| 非超低与超低排放煤电机组启动过程NOx排放特征对比分析 |
| 摘要点击 1576 全文点击 570 投稿时间：2019-10-25 修订日期：2020-01-14 |
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| 中文关键词 超低排放 煤电机组 启动 NOx 排放特征 |
| 英文关键词 ultra-low emission coal-fired power unit start-up process NOx emission characteristics |
| 作者 | 单位 | E-mail | | 李辉 | 国电科学技术研究院有限公司, 南京 210023
国电环境保护研究院有限公司, 南京 210031 | lihui850627@126.com | | 朱法华 | 国电科学技术研究院有限公司, 南京 210023
国电环境保护研究院有限公司, 南京 210031 | | | 孙雪丽 | 国电环境保护研究院有限公司, 南京 210031 | | | 王宗爽 | 中国环境科学研究院, 北京 100012 | | | 王圣 | 国电环境保护研究院有限公司, 南京 210031 | | | 裴杰 | 国电科学技术研究院有限公司, 南京 210023 | | | 谭玉菲 | 中国环境科学研究院, 北京 100012 | | | 薛峰 | 国电科学技术研究院有限公司, 南京 210023 | | | 郭敏 | 中国环境科学研究院, 北京 100012 | | | 郑桂博 | 国电龙源电力技术工程有限责任公司, 北京 100039 | |
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| 中文摘要 |
| 通过采集671台次燃煤火电机组NOx排放实时监控数据，对非超低排放与超低排放机组总体及相应各等级机组启动过程中NOx排放特征进行了对比分析.结果表明，非超低排放机组启动阶段NOx超标率为81.53%，平均超标小时数为2.64 h，平均最大排放小时均值为284.06 mg·m-3；超低排放机组启动阶段NOx超标率为79.86%，平均超标小时数为2.52 h，平均最大排放小时均值为231.61 mg·m-3；非超低与超低排放机组总体及相应各等级机组间NOx超标率和平均超标时长无统计学意义上的差异，但平均最大排放小时均值浓度存在显著差异；非超低排放机组中，除300 MW等级机组平均最大排放小时均值浓度显著低于200 MW等级机组外，其余对比组在超标率、超标小时数及平均最大排放小时均值浓度上均无显著差异；不同等级超低排放机组之间在超标率、超标小时数和最大排放小时均值浓度上都有统计学意义上差异的情况，600 MW等级机组超标时长控制最优，1000 MW等级机组排放浓度控制较好. |
| 英文摘要 |
| Based on the NOx emission information of 671 coal-fired power units, the NOx emission characteristics of non-ultra-low-emission (non-ULE) and ultra-low-emission (ULE) coal-fired power units during the start-up process were compared and analyzed. The results showed that in the start-up stage of non-ULE units, the exceeding standard rate (ESR) of NOx emission concentration was 81.53%, the average exceeding standard hours (ESHs) was 2.64 h, and the average maximum emission hourly mean concentration (MEHC) was 284.06 mg·m-3. The NOx ESR of ULE units was 79.86%, the average ESHs was 2.52 h, and the average MEHC was 231.61 mg·m-3. There was no significant difference in the ESR and the average ESHs between non-ULE and ULE units, but the difference in the average MEHC was significant. There was no significant difference in the ESR, average ESHs, and average MEHC between different grades of non-ULE units, except that the average MEHC of 300 MW units was significantly lower than that of 200 MW units. There was statistical difference in the ESR, average ESHs, and average MEHC among different grades of ULE units, and 600 MW units performed best in the ESHs control, whereas 1000 MW units performed best in the emission concentration control. |
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