燃煤电厂和钢铁厂烧结烟气有色烟羽排放特征与管控建议

韩军赞; 张洁; 闫威卓; 王社扣; 张妍; 邓建国

doi:10.13205/j.hjgc.202402017

燃煤电厂和钢铁厂烧结烟气有色烟羽排放特征与管控建议

doi: 10.13205/j.hjgc.202402017

韩军赞^1,2,
张洁^1,2,3,4, ,,
闫威卓^1,2,
王社扣^1,2,
张妍^1,2,3,
邓建国⁵

1. 江苏省环境工程技术有限公司, 南京 210019;
2. 江苏省重点行业减污降碳协同控制工程研究中心, 南京 210019;
3. 江苏省工业园区规范化建设及智慧化管控工程研究中心, 南京 210019;
4. 江苏省环保集团有限公司;
5. 清华大学环境学院, 北京 100084

基金项目:

江苏省环保集团科技项目计划(JSEP-TZ-2021-2003-RE,JSEP-TZ-2021-2002-RE)

详细信息

作者简介:
韩军赞(1989-),男,硕士,工程师,主要研究方向为大气污染源排放特征与控制对策研究。hnshhjz@foxmail.com

通讯作者:
张洁(1983-),女,博士,正高级工程师,主要研究方向为大气污染控制。zhangjie@jsep.com

计量
- 文章访问数: 65
- HTML全文浏览量: 7
- PDF下载量: 6
- 被引次数: 0
出版历程
- 收稿日期: 2023-05-09
- 网络出版日期: 2024-04-28

EMISSION CHARACTERISTICS AND CONTROL SUGGESTIONS OF COLORED SMOKE PLUMES FROM COAL-FIRED POWER PLANTS AND IRON AND STEEL PLANTS' SINTERING PROCESSES

HAN Junzan^1,2,
ZHANG Jie^{1,2,3,4
, ,},
YAN Weizhuo^1,2,
WANG Shekou^1,2,
ZHANG Yan^1,2,3,
DENG Jianguo⁵

1. Jiangsu Environmental Engineering Technology Co., Ltd., Nanjing 210019, China;
2. Jiangsu Province Engineering Research Center of Synergistic Control of Pollution and Carbon Emissions in Key Industries, Nanjing 210019, China;
3. Jiangsu Province Engineering Research Center of Standardized Construction and Intelligent Management of Industrial Parks, Nanjing 210019, China;
4. Jiangsu Environmental Protection Group Co., Ltd., Nanjing 210019, China;
5. School of Environment, Tsinghua University, Beijing 100084, China

摘要

摘要: 超低排放改造后,电力和钢铁行业常规大气污染物排放量大幅削减,非常规污染物及有色烟羽问题逐步引起关注,视觉污染及“脱白”问题一时成为讨论的焦点。基于国内外相关标准方法,对3家燃煤电厂和2家钢铁厂烧结机机头烟气总排口处的SO₃、NH₃、可过滤颗粒物(FPM)和可凝结颗粒物(CPM)的排放水平进行测试,评估超低排放实施效果和有色烟羽治理的可行性。结果表明,3家燃煤电厂和2家钢铁厂烧结烟气SO₃、NH₃和FPM的排放浓度分别为0.11~1.61,0.02~1.66,0.81~5.76 mg/Nm³,均处于较低水平,其中FPM排放浓度均能够满足超低排放要求,实施烟气“脱白”改造后SO₃和NH₃排放浓度与同行业相比均有显著下降,但减排效果较为有限。3家燃煤电厂和2家钢铁厂烧结烟气中CPM排放浓度分别为3.39~4.82,26.6~29.1 mg/Nm³,其中钢铁厂CPM排放浓度处于较高水平,约为颗粒物超低排放限值的3倍,CPM/总颗粒物(TPM)达到97%左右。无论是燃煤电厂和还是钢铁厂,新增“脱白”技术后并不一定能够显著降低CPM排放水平,因此,超低排放改造后再增加“脱白”改造的可行性值得深思。此外,燃煤电厂和钢铁厂烧结烟气颗粒物在线监测结果均处于较低水平,且远低于手工监测测得的TPM排放浓度,现有在线监测数据由于不包括CPM,因而在评价烟气中颗粒物达标排放情况时存在一定局限性和不确定性,亟需完善现有固定源烟气中颗粒物的测量体系和排放标准体系,以控制CPM排放水平。
- 燃煤电厂 /
- 钢铁厂 /
- 有色烟羽 /
- 超低排放 /
- 可凝结颗粒物
Abstract: After the ultra-low emission renovation, the conventional air pollutant emissions from the power and steel industries have been significantly reduced. The new problem caused by unconventional pollutants and colored plumes has gradually attracted people's attention for its visual appearance and "de-whitening" problem for a long time. Based on relevant domestic and international standards and methods, the emission levels of SO₃, NH₃, filterable particulate matter(FPM), and condensable particulate matter(CPM) at the main exhaust ports in three coal-fired power plants and the sintering machine heads of two iron and steel plants were tested to evaluate the effectiveness of ultra-low emission implementation and the feasibility of colored smoke plume control. The results showed that the emission concentrations of SO₃, NH₃ and FPM from three coal-fired power plants and sintering flue gas of the two steel plants were 0.11 mg/Nm³ to 1.61 mg/Nm³, 0.02 mg/Nm³ to 1.66 mg/Nm³, and 0.81 mg/Nm³ to 5.76 mg/Nm³, respectively, which were all at a low level, and the emission concentrations of FPM could all meet the ultra-low emission requirements. After implementing the flue gas "de-whitening" transformation, the emission concentrations of SO₃ and NH₃ from coal-fired power plants or iron and steel plants' sintering processes decreased significantly, but the emission reduction effect was limited. The CPM emission concentrations from three coal-fired power plants and two steel plants' sintering processes were 3.39 mg/Nm³ to 4.82 mg/Nm³ and 26.6 mg/Nm³ to 29.1 mg/Nm³, respectively. The latter was at a higher level, about 3 times the ultra-low emission limit of particulate matter, and about 32 times of FPM emission concentration, and the CPM/total particulate matter(TPM) reached about 97%. Whether in coal-fired power plants or steel plants, applying "de-whitening" technology might not necessarily significantly reduce CPM emissions. Therefore, the feasibility of adding "whitening" transformation after ultra-low emission transformation is worth pondering. In addition, the online monitoring results of particulate matter in coal-fired power plants and iron and steel plants were both at a relatively low level, and far lower than the TPM emission concentrations measured by manual monitoring. The existing online monitoring data, which does not include CPM, has certain limitations and uncertainties in evaluating the particulate matter emissions in flue gas meeting the standard. Hence, it is urgent to improve the existing measurement system and emission standard system of particulate matter in stationary pollution sources to control the emissions of CPM.
- coal-fired power plant /
- iron and steel plant /
- colored smoke plume /
- ultra-low emission /
- condensable particulate matter(CPM)

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