光学原位法探针测量超低减排烟气

张焰峰; 杨正鹏; 陈军; 苏明旭; 陶雷行; 蔡小舒

doi:10.13700/j.bh.1001-5965.2016.0126

光学原位法探针测量超低减排烟气

doi: 10.13700/j.bh.1001-5965.2016.0126

张焰峰^{1, 2},
杨正鹏^{1, 2},
陈军^{1, 2, ,},
苏明旭^{1, 2},
陶雷行³,
蔡小舒^{1, 2}

1.
上海理工大学能源与动力工程学院, 上海 200093
2.
上海市多相流及传热传质重点实验室, 上海 20009
3.
上海明华电力技术工程有限公司, 上海 200093

基金项目:

国家自然科学基金 41375124

国家自然科学基金 91544225

详细信息

作者简介:
张焰峰, 男, 硕士研究生。主要研究方向:光谱在线测量及在环境和排放监测中的应用

陈军, 男, 博士, 讲师。主要研究方向:光谱在线测量及在环境和排放监测中的应用

蔡小舒, 男, 博士, 教授, 博士生导师。主要研究方向:两相流在线监测技术

通讯作者:
陈军, E-mail:j.chen@usst.edu.cn

中图分类号: TK314
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- 被引次数: 0
出版历程
- 收稿日期: 2016-02-07
- 录用日期: 2016-06-12
- 网络出版日期: 2017-02-20

In-situ optical probe measurement of ultra-low emission reduction flue gas

ZHANG Yanfeng^{1, 2},
YANG Zhengpeng^{1, 2},
CHEN Jun^{1, 2
, ,},
SU Mingxu^{1, 2},
TAO Leixing³,
CAI Xiaoshu^{1, 2}

1.
School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
2.
Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, Shanghai 20009
3.
Shanghai Minghua Power Technology Engineering Co., Ltd., Shanghai 200093, China

Funds:

National Natural Science Foundation of China 41375124

National Natural Science Foundation of China 91544225

More Information

Corresponding author: E-mail:j.chen@usst.edu.cn

摘要

摘要:
随着燃煤电厂超低减排的开展，烟气监测技术的要求也越来越严格。研制了应用差分光学吸收光谱（DOAS）和多波长消光的实时在线烟气监测探针，可同时对SO₂、烟尘等浓度进行监测。并在实验室进行了标定，SO₂浓度及烟尘反演误差均小于10%，不同浓度SO₂反演浓度曲线线性度好，线性相关系数为0.999 64。利用该系统对某燃煤电厂烟气中的SO₂和液滴颗粒物进行了现场监测。结果表明：该系统对SO₂、液滴颗粒的监测结果与锅炉运行工况、实际运行状况吻合。
- 原位法 /
- 超低减排 /
- 烟气 /
- 光学探针 /
- 燃煤电厂
Abstract:
With the development of ultra-low emission reduction in coal-fired power plant, the requirement of monitoring technologies is becoming more and more rigid. A detector probe based on differential optics absorption spectroscopy (DOAS) and multi-wavelength extinction method is presented, which can be used to realize the in-situ measurement of SO₂, particulate in flue gas, etc. The system was calibrated with the standard SO₂ gas and polystyrene particulate, and both inversion concentrations agree well with real values. The error is less than 10%, the fitting line of seven SO₂ measurement points has good linearity, and linear correlation coefficient is 0.999 64. The system was successfully applied to a coal-fired power plant in different operating conditions for a longer time continuous monitoring. Results show that the system has a good agreement between system monitoring and working conditions on SO₂ and particulate in flue gas.
- in-situ /
- ultra-low emission reduction /
- flue gas /
- optical probe /
- coal-fired power plant

HTML全文

图 1 朗伯比尔定律示意图

Figure 1. Schematic diagram of Lambert-Beer law

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图 2 光学探针结构图

Figure 2. Schematic of optical probe structure

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图 3 实验室标定得到的SO₂吸收截面及处理结果

Figure 3. SO₂ absorption cross sections obtained from laboratory calibration and results

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图 4 实验室SO₂标气测量结果

Figure 4. Standard SO₂ measurement result in laboratory

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图 5 SO₂标气测量结果

Figure 5. SO₂ standard gas measurement results

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图 6 折射率为1.33和1.57时得到的液滴索太尔平均直径

Figure 6. Sauter average droplet size at refractive index of 1.33 and 1.57

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图 7 实验测得烟气中SO₂浓度

Figure 7. Experimental measurement of SO₂ concentration in flue gas

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图 8 除雾器出口液滴颗粒体积浓度

Figure 8. Droplet particle volume concentration at outlet of demister

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图 9 液滴颗粒浓度与锅炉负荷

Figure 9. Droplet particle concentration and boiler load

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图 10 某时刻液滴颗粒粒径分布

Figure 10. Droplet particle size distribution at a certain time

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表 1 标准颗粒测试结果

Table 1. Test results of standard particles

标准值/nm D₃₂/nm D₃₂误差/% D₅₀/nm D₅₀误差/%

960 987 2.81 926 3.54

2 100 1 958 6.76 1 932 8.00

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参考文献(17)

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