基于现场实测的湿电除尘器颗粒物特性变化研究

杨建军; 杜利劳; 马启翔; 林启才

doi:10.16803/j.cnki.issn.1004-6216.2019.03.008

环境保护科学

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杨建军, 杜利劳, 马启翔, 林启才. 基于现场实测的湿电除尘器颗粒物特性变化研究[J]. 环境保护科学, 2019, (3): 45-50. doi: 10.16803/j.cnki.issn.1004-6216.2019.03.008

引用本文:

杨建军, 杜利劳, 马启翔, 林启才. 基于现场实测的湿电除尘器颗粒物特性变化研究[J]. 环境保护科学, 2019, (3): 45-50. doi: 10.16803/j.cnki.issn.1004-6216.2019.03.008

YANG Jianjun, DU Lilao, MA Qixiang, LIN Qicai. Study on Particles Characteristics Variation of WESP Based on Field Measurement[J]. Environmental Protection Science, 2019, (3): 45-50. doi: 10.16803/j.cnki.issn.1004-6216.2019.03.008

Citation:

YANG Jianjun, DU Lilao, MA Qixiang, LIN Qicai. Study on Particles Characteristics Variation of WESP Based on Field Measurement[J]. Environmental Protection Science, 2019, (3): 45-50. doi: 10.16803/j.cnki.issn.1004-6216.2019.03.008

基于现场实测的湿电除尘器颗粒物特性变化研究

1. 西安文理学院生物与环境工程学院, 陕西西安 710065;
2. 陕西省环境科学研究院, 陕西西安 710061

作者简介: 杨建军(1975-),男,博士、高级工程师。研究方向:大气污染控制。E-mail:yangjianjun_05@163.com

基金项目:
陕西省科技统筹创新工程计划课题(2012KTZB03-01)资助
中图分类号: X513

Study on Particles Characteristics Variation of WESP Based on Field Measurement

1. School of Biological and Environmental Engineering, Xi'an University, Xi'an 710065, China;
2. Shaanxi Research Academy of Environmental Sciences, Xi'an 710061, China
Fund Project:

摘要: 采用自主设计的固定源细颗粒物稀释采集系统以及根据GB/T 16157-1996方法对陕西关中地区某燃煤电厂湿电除尘器(WESP)进出口的颗粒物开展了现场实测与特性分析。结果表明:WESP对PM_2.5、PM₁₀和颗粒物的脱除效率分别为67.85%、43.57%、40.88%;WESP前后质量浓度峰值均出现在积聚模态,但由双峰(1.764、0.649 μm)变成单峰(1.764 μm),峰值移至大粒径段,数浓度峰值出现在爱根核模态和积聚模态,但由多峰(0.017、0.129、0.384、1.764 μm)变成双峰(0.017、0.073 μm),峰值移至小粒径段;经WESP,PM_2.5积聚模态大多粒径段颗粒物的质量浓度与数浓度均在下降(如在质量浓度和数浓度下降粒径段中,0.129 μm处下降率均最少(均为59.03%)),爱根核模态大多粒径段颗粒物的质量浓度与数浓度均在上升(如在质量浓度和数浓度上升粒径段中,0.017 μm处上升率均最少(均为55.36%)),但无论是WESP前或后,PM_2.5的主要质量浓度均集中在大粒径段、主要数浓度均集中在小粒径段;WESP对PM_2.5中大粒径段颗粒物的去除效果要优于小粒径段颗粒物。
- 现场实测 /
- WESP /
- 颗粒物 /
- 粒径分布
Abstract: Field experiments and characteristic analysis of particles in flue gas from inlet and outlet of a coal-fired power plant using WESP in Guanzhong area of Shaanxi province was carried out according to GB/T 16157-1996 and the dilution and collection system of PM_2.5 in stationary sources designed by our team. The removal rates of PM_2.5, PM₁₀ and particles by WESP were 67.85%, 43.57% and 40.88%, respectively. The peak of mass concentration before and after WESP appeared in the accumulation mode, but changed from two peak (1.764μm、0.649μm) to one peak (1.764μm), and the peak moved to large particle. The peak of number concentration appeared in Aitken mode and accumulation mode, but changed from multi peak (0.017μm、0.129μm、0.384μm、1.764μm) to two peak (0.017μm、0.073μm), and the peak moved to small particle. The mass concentration and number concentration of most particle size fractions in accumulation mode were decreasing (For example, the rate of descent at 0.129μm were the lowest (59.03%) in the decreasing particle size fractions of mass concentration and number concentration). The mass concentration and number concentration of most particle size fractions in Aitken mode are on the rise (For example, the rate of increase at 0.017μm were the lowest (55.36%) in the ascending particle size fractions of mass concentration and number concentration). However, the major mass concentration of PM_2.5 was concentrated in the large particle size, and the main number concentration was concentrated in the small particle size, either before or after the WESP for PM_2.5. The removal efficiency of WESP on large particles for PM_2.5 was better than that of small particles.
- Field Measurement /
- WESP /
- Particle /
- Size Distribution

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杨建军, 杜利劳, 马启翔, 林启才. 基于现场实测的湿电除尘器颗粒物特性变化研究[J]. 环境保护科学, 2019, (3): 45-50. doi: 10.16803/j.cnki.issn.1004-6216.2019.03.008

引用本文:

杨建军, 杜利劳, 马启翔, 林启才. 基于现场实测的湿电除尘器颗粒物特性变化研究[J]. 环境保护科学, 2019, (3): 45-50. doi: 10.16803/j.cnki.issn.1004-6216.2019.03.008

Citation:

基于现场实测的湿电除尘器颗粒物特性变化研究

作者简介: 杨建军(1975-),男,博士、高级工程师。研究方向:大气污染控制。E-mail:yangjianjun_05@163.com
1. 西安文理学院生物与环境工程学院, 陕西西安 710065;

2. 陕西省环境科学研究院, 陕西西安 710061

收稿日期: 2019-01-07

基金项目:

陕西省科技统筹创新工程计划课题(2012KTZB03-01)资助

关键词:

现场实测 /
WESP /
颗粒物 /
粒径分布

摘要: 采用自主设计的固定源细颗粒物稀释采集系统以及根据GB/T 16157-1996方法对陕西关中地区某燃煤电厂湿电除尘器(WESP)进出口的颗粒物开展了现场实测与特性分析。结果表明:WESP对PM_2.5、PM₁₀和颗粒物的脱除效率分别为67.85%、43.57%、40.88%;WESP前后质量浓度峰值均出现在积聚模态,但由双峰(1.764、0.649 μm)变成单峰(1.764 μm),峰值移至大粒径段,数浓度峰值出现在爱根核模态和积聚模态,但由多峰(0.017、0.129、0.384、1.764 μm)变成双峰(0.017、0.073 μm),峰值移至小粒径段;经WESP,PM_2.5积聚模态大多粒径段颗粒物的质量浓度与数浓度均在下降(如在质量浓度和数浓度下降粒径段中,0.129 μm处下降率均最少(均为59.03%)),爱根核模态大多粒径段颗粒物的质量浓度与数浓度均在上升(如在质量浓度和数浓度上升粒径段中,0.017 μm处上升率均最少(均为55.36%)),但无论是WESP前或后,PM_2.5的主要质量浓度均集中在大粒径段、主要数浓度均集中在小粒径段;WESP对PM_2.5中大粒径段颗粒物的去除效果要优于小粒径段颗粒物。

English Abstract

Study on Particles Characteristics Variation of WESP Based on Field Measurement

1. School of Biological and Environmental Engineering, Xi'an University, Xi'an 710065, China;
2. Shaanxi Research Academy of Environmental Sciences, Xi'an 710061, China

Received Date: 2019-01-07

Fund Project:

Keywords:

Abstract: Field experiments and characteristic analysis of particles in flue gas from inlet and outlet of a coal-fired power plant using WESP in Guanzhong area of Shaanxi province was carried out according to GB/T 16157-1996 and the dilution and collection system of PM_2.5 in stationary sources designed by our team. The removal rates of PM_2.5, PM₁₀ and particles by WESP were 67.85%, 43.57% and 40.88%, respectively. The peak of mass concentration before and after WESP appeared in the accumulation mode, but changed from two peak (1.764μm、0.649μm) to one peak (1.764μm), and the peak moved to large particle. The peak of number concentration appeared in Aitken mode and accumulation mode, but changed from multi peak (0.017μm、0.129μm、0.384μm、1.764μm) to two peak (0.017μm、0.073μm), and the peak moved to small particle. The mass concentration and number concentration of most particle size fractions in accumulation mode were decreasing (For example, the rate of descent at 0.129μm were the lowest (59.03%) in the decreasing particle size fractions of mass concentration and number concentration). The mass concentration and number concentration of most particle size fractions in Aitken mode are on the rise (For example, the rate of increase at 0.017μm were the lowest (55.36%) in the ascending particle size fractions of mass concentration and number concentration). However, the major mass concentration of PM_2.5 was concentrated in the large particle size, and the main number concentration was concentrated in the small particle size, either before or after the WESP for PM_2.5. The removal efficiency of WESP on large particles for PM_2.5 was better than that of small particles.