Experimental Study of the Removal of Fine Particulate Matter and Moisture from Flue Gas

ZHENG Xin, LU Yuan, WANG Bo, ZHAO Lifeng

热科学学报 ›› 2023, Vol. 32 ›› Issue (6) : 2273-2283.

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热科学学报 ›› 2023, Vol. 32 ›› Issue (6) : 2273-2283. DOI: 10.1007/s11630-023-1847-2  CSTR: 32141.14.JTS-023-1847-2

Experimental Study of the Removal of Fine Particulate Matter and Moisture from Flue Gas

  • ZHENG Xin1,2, LU Yuan1,2*, WANG Bo1,2, ZHAO Lifeng1,2
作者信息 +

Experimental Study of the Removal of Fine Particulate Matter and Moisture from Flue Gas

  • ZHENG Xin1,2, LU Yuan1,2*, WANG Bo1,2, ZHAO Lifeng1,2
Author information +
文章历史 +

摘要

开式吸收式系统是一种具有潜力的回收烟气水和余热的技术手段。文献研究表明吸收过程可同时脱除颗粒物。本文采用实验的方法研究了吸收器的细颗粒物脱除效果。实验中所用除湿剂为氯化钙水溶液。实验结果显示,质量平衡偏差不超过±10%,能量平衡偏差不超过±15%,表明了实验数据的可靠性。23.5%-46.0%的细颗粒物与23.9%-45.1%的水分从烟气中被脱除。通过比较除湿剂和水,发现二者对烟气的冲刷无法明显脱除细颗粒物。当除湿剂或水实现了相同的水回收率,二者的细颗粒物脱除率也十分接近。经过实验参数分析,细颗粒物脱除率与水回收率几乎呈线性关系。

Abstract

Liquid desiccant systems are promising methods to recover water and waste heat simultaneously from flue gas. Prior research found that the reduction of particulate matter could occur during the absorption processes. In the present paper, experiments were carried out to explore the effect of removing fine particulate matter (PM2.5) in a liquid desiccant dehumidifier. Aqueous calcium chloride (CaCl2) was used as the desiccant in the experiments. The discrepancies in mass and energy conservation were within ±10% and ±15%, respectively, which showed the good reliability of the experimental results. Additionally, 23.5%–46.0% of the PM2.5 and 23.9%–45.1% of the moisture in the flue gas were removed. By comparing the desiccant solution and water, it was found that they could minimally remove PM2.5 through washing the flue gas. Regardless of whether the flue gas was dehumidified by water or the solution, the removal fractions of PM2.5 of these two methods could be very close if they achieve the same fraction of moisture removal. From the results of a parameter analysis, it was found that the removal fraction of PM2.5 was nearly proportional to the removal fraction of moisture within the experimental range.

关键词

flue gas / fine particulate matter / removal / dehumidification

Key words

flue gas / fine particulate matter / removal / dehumidification

引用本文

导出引用
ZHENG Xin, LU Yuan, WANG Bo, ZHAO Lifeng. Experimental Study of the Removal of Fine Particulate Matter and Moisture from Flue Gas[J]. 热科学学报, 2023, 32(6): 2273-2283 https://doi.org/10.1007/s11630-023-1847-2
ZHENG Xin, LU Yuan, WANG Bo, ZHAO Lifeng. Experimental Study of the Removal of Fine Particulate Matter and Moisture from Flue Gas[J]. Journal of Thermal Science, 2023, 32(6): 2273-2283 https://doi.org/10.1007/s11630-023-1847-2

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基金

This work was supported by a National Science and Technology Major Project (No. 2017-I-0009-0010).

版权

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2023
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