Humidity-control assists high-efficient coal fly ash removal by PTFE membrane

doi:10.1016/j.cjche.2021.05.017

中国化学工程学报 ›› 2021, Vol. 40 ›› Issue (12): 88-95.DOI: 10.1016/j.cjche.2021.05.017

• Separation Science and Engineering • 上一篇下一篇

Humidity-control assists high-efficient coal fly ash removal by PTFE membrane

Dongyan Li¹, Xi Tang², Shasha Feng²

1. Chemical Engineering Department, Nanjing Polytechnic Institute, Nanjing 210048, China;
2. State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing 210009, China

收稿日期:2021-04-09 修回日期:2021-05-07 出版日期:2021-12-28 发布日期:2022-01-14
通讯作者: Dongyan Li,E-mail:ldy@njpi.edu.cn
基金资助:
This work is supported by the National Key Research and Development Project of China (2018YFE0203500), the High-end Research and Training Project for Specialty Leading Person of Jiangsu Higher Vocational Colleges (2020GRGDYX039), and the Qing Lan Project of Jiangsu Colleges.

Humidity-control assists high-efficient coal fly ash removal by PTFE membrane

Dongyan Li¹, Xi Tang², Shasha Feng²

1. Chemical Engineering Department, Nanjing Polytechnic Institute, Nanjing 210048, China;
2. State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing 210009, China

Received:2021-04-09 Revised:2021-05-07 Online:2021-12-28 Published:2022-01-14
Contact: Dongyan Li,E-mail:ldy@njpi.edu.cn
Supported by:
This work is supported by the National Key Research and Development Project of China (2018YFE0203500), the High-end Research and Training Project for Specialty Leading Person of Jiangsu Higher Vocational Colleges (2020GRGDYX039), and the Qing Lan Project of Jiangsu Colleges.

摘要/Abstract

摘要： In the present study, the effects of relative humidity on filtrating coal-fired fly ash with hydrophobic poly tetra fluoroethylene (PTFE) membranes were investigated. The intergranular force of particulate matter at different RH conditions was measured by analyzing the critical angle between particles. Effects of humidity (from 30% to 70%) on filtration pressure drop and membrane fouling conditions were characterized. It was found the membrane showed optimal filtration resistance of 530 Pa at RH of 60% and the gas permeance can be maintained at 1440 m³·m^-²·h^-1·kPa^-1. Moreover, to optimize the operation parameters for this filtration system, effects of fly ash concentration, diameter, membrane pore size, and gas velocities were systematically investigated.

关键词: Relative humidity, Collapse angle, Pressure drop, Poly tetra fluoroethylene (PTFE) membrane, Fly ash

Abstract: In the present study, the effects of relative humidity on filtrating coal-fired fly ash with hydrophobic poly tetra fluoroethylene (PTFE) membranes were investigated. The intergranular force of particulate matter at different RH conditions was measured by analyzing the critical angle between particles. Effects of humidity (from 30% to 70%) on filtration pressure drop and membrane fouling conditions were characterized. It was found the membrane showed optimal filtration resistance of 530 Pa at RH of 60% and the gas permeance can be maintained at 1440 m³·m^-²·h^-1·kPa^-1. Moreover, to optimize the operation parameters for this filtration system, effects of fly ash concentration, diameter, membrane pore size, and gas velocities were systematically investigated.

Key words: Relative humidity, Collapse angle, Pressure drop, Poly tetra fluoroethylene (PTFE) membrane, Fly ash

Dongyan Li, Xi Tang, Shasha Feng. Humidity-control assists high-efficient coal fly ash removal by PTFE membrane[J]. 中国化学工程学报, 2021, 40(12): 88-95.

Dongyan Li, Xi Tang, Shasha Feng. Humidity-control assists high-efficient coal fly ash removal by PTFE membrane[J]. Chinese Journal of Chemical Engineering, 2021, 40(12): 88-95.

参考文献

[1] R. Betha, S.N. Behera, R. Balasubramanian, 2013 Southeast Asian smoke haze: fractionation of particulate-bound elements and associated health risk, Environ. Sci. Technol. 48 (8) (2014) 4327–4335
[2] A. Nel, Air pollution-related illness: effects of particles, Science 308 (5723) (2005) 804–806
[3] U. Pöschl, Atmospheric aerosols: composition, transformation, climate and health effects, Angew. Chem. Int. Ed. Engl.44 (46) (2005) 7520–7540
[4] Q. Zhang, X. Jiang, D. Tong, S.J. Davis, H. Zhao, G. Geng, T. Feng, B. Zheng, Z. Lu, D.G. Streets, R. Ni, M. Brauer, A. van Donkelaar, R.V. Martin, H. Huo, Z. Liu, D. Pan, H. Kan, Y. Yan, J. Lin, K. He, D. Guan,Transboundary health impacts of transported global air pollution and international trade, Nature 543 (7647) (2017) 705–709
[5] J.C. Chow, J.G. Watson, J.L. Mauderly, D.L. Costa, R.E. Wyzga, S. Vedal, G.M. Hidy, S.L. Altshuler, D. Marrack, J.M. Heuss, G.T. Wolff, C. Arden Pope III, D.W. Dockery, Health effects of fine particulate air pollution: Lines that connect, J. Air Waste Manag. Assoc. 56 (10) (2006) 1368–1380.
[6] D.E. Horton, C.B. Skinner, D. Singh, N.S. Diffenbaugh, Occurrence and persistence of future atmospheric stagnation events, Nat. Clim. Chang. 4 (2014) 698–703
[7] C. Liu, P.C. Hsu, H.W. Lee, M. Ye, G. Zheng, N. Liu, W. Li, Y. Cui, Transparent air filter for high-efficiency PM_2.5 capture, Nat. Commun. 6 (2015) 6205
[8] X.W. Zhang, W. Zhang, M.Q. Yi, Y.J. Wang, P.J. Wang, J. Xu, F.L. Niu, F. Lin, High-performance inertial impaction filters for particulate matter removal, Sci. Rep. 8 (1) (2018) 4757
[9] C. Rao, F. Gu, P. Zhao, N. Sharmin, H. Gu, J. Fu, Capturing PM_2.5 emissions from 3D printing via nanofiber-based air filter, Sci. Rep. 7 (1) (2017) 10366
[10] K.J. Maji, A.K. Dikshit, M. Arora, A. Deshpande, Estimating premature mortality attributable to PM_2.5 exposure and benefit of air pollution control policies in China for 2020, Sci. Total Environ. 612 (2018) 683–693.
[11] W.J. Fisk, D. Faulkner, J. Palonen, O. Seppanen, Performance and costs of particle air filtration technologies, Indoor Air 12 (4) (2002) 223–234
[12] D.W. Hu, L.P. Qiao, J.M. Chen, X.N. Ye, X. Yang, T.T. Cheng, W. Fang, Hygroscopicity of inorganic aerosols: Size and relative humidity effects on the growth factor, Aerosol Air Qual. Res. 10 (3) (2010) 255–264
[13] D.A. Japuntich, J.I.T. Stenhouse, B.Y.H. Liu, Experimental results of solid monodisperse particle clogging of fibrous filters, J. Aerosol Sci. 25 (2) (1994) 385–393
[14] A.D. Schwarz, L. König, J. Meyer, A. Dittler, Impact of water droplet and humidity interaction with soluble particles on the operational performance of surface filters in gas cleaning applications, J. Aerosol Sci. 142 (2020) 105523
[15] L.Y. Wang, L.E. Yu, T.S. Chung, Effects of relative humidity, particle hygroscopicity, and filter hydrophilicity on filtration performance of hollow fiber air filters, J. Membr. Sci. 595 (2020) 117561
[16] A. Gupta, V.J. Novick, P. Biswas, P.R. Monson, Effect of humidity and particle hygroscopicity on the mass loading capacity of high efficiency particulate air (HEPA) filters, Aerosol Sci. Technol. 19 (1) (1993) 94–107
[17] X. Gao, S.S. Wen, B.L. Yang, J. Xue, H.H. Wang, Enhanced air filtration performance under high-humidity condition through electrospun membranes with optimized structure, Chin. J. Chem. Eng. 28 (7) (2020) 1788–1795
[18] C. Liu, Z.J. Dai, B. He, Q.F. Ke, The effect of temperature and humidity on the filtration performance of electret melt-blown nonwovens, Materials 13 (21) (2020) 4774
[19] Y. Huang, Q.L. Huang, H. Liu, C.X. Zhang, Y.W. You, N.N. Li, C.F. Xiao, Preparation, characterization, and applications of electrospun ultrafine fibrous PTFE porous membranes, J. Membr. Sci. 523 (2017) 317–326
[20] Y. Yang, S. Meng, E.G. Wang, Water adsorption on a NaCl (001) surface: a density functional theory study, Phys. Rev. B 74 (24) (2006) 245409
[21] Q. Dai, J. Hu, M. Salmeron, Adsorption of water on NaCl (100) surfaces: role of atomic steps, J. Phys. Chem. B 101 (11) (1997) 1994–1998
[22] D.J. Dai, S.J. Peters, G.E. Ewing, Water adsorption and dissociation on NaCl surfaces, J. Phys. Chem. 99 (25) (1995) 10299–10304
[23] L. Bocquet, E. Charlaix, S. Ciliberto, J. Crassous, Moisture-induced ageing in granular media and the kinetics of capillary condensation, Nature 396 (6713) (1998) 735–737
[24] C.D. Willett, M.J. Adams, S.A. Johnson, J.P.K. Seville, Capillary bridges between two spherical bodies, Langmuir 16 (24) (2000) 9396–9405
[25] A. Joubert, J.C. Laborde, L. Bouilloux, S. Chazelet, D. Thomas, Modelling the pressure drop across HEPA filters during cake filtration in the presence of humidity, Chem. Eng. J. 166 (2) (2011) 616–623
[26] E.F. Mikhailov, S.S. Vlasenko, L. Krämer, R. Niessner, Interaction of soot aerosol particles with water droplets: influence of surface hydrophilicity, J. Aerosol Sci. 32 (6) (2001) 697–711
[27] P.A. Kralchevsky, N.D. Denkov, Capillary forces and structuring in layers of colloid particles, Curr. Opin. Colloid Interface Sci. 6 (4) (2001) 383–401
[28] A.F. Payam, M. Fathipour, A capillary force model for interactions between two spheres, Particuology 9 (4) (2011) 381–386
[29] N. Stevens, J. Ralston, R. Sedev,The uniform capillary model for packed beds and particle wettability, J. Colloid. Interface Sci. 337 (1) (2009) 162–169
[30] S.M. Kreidenweis, M.D. Petters, P.J. DeMott, Single-parameter estimates of aerosol water content, Environ. Res. Lett. 3 (3) (2008) 035002
[31] H.J. Kim, S.J. Park, D.I. Kim, S. Lee, O.S. Kwon, I.K. Kim, Moisture effect on particulate matter filtration performance using electro-spun nanofibers including density functional theory analysis, Sci. Rep. 9 (1) (2019) 7015
[32] M. Gysel, E. Weingartner, U. Baltensperger, Hygroscopicity of aerosol particles at low temperatures. 2. Theoretical and experimental hygroscopic properties of laboratory generated aerosols, Environ. Sci. Technol. 36 (1) (2002) 63–68
[33] X. Tang, S.F. Zhao, S.S. Feng, Z.X. Zhong, W.H. Xing, Exploring the key factors in dusty gas filtration: experimental and modeling studies, Ind. Eng. Chem. Res. 58 (42) (2019) 19633–19641

Humidity-control assists high-efficient coal fly ash removal by PTFE membrane

Humidity-control assists high-efficient coal fly ash removal by PTFE membrane

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