徐炜娜,王军锋,高健,孙培哲

• 1:江苏大学能源与动力工程学院
• 2:重庆大学能源与动力工程学院

摘要(Abstract)：

针对燃煤电厂湿法脱硫(WFGD)系统存在的能耗高、效率受限及调峰适应性差等问题，基于计算流体力学-离散相模型(CFD-DPM)数值模拟方法，以FLUENT为求解平台开展电场强化脱硫技术的应用优化研究。通过离散相模型(DPM)追踪荷电液滴在湍流场中的运动轨迹，并采用荷电传质模型对带电液滴的气液传质行为开展模拟，系统研究了工业尺度喷淋塔在多物理场耦合条件下的脱硫过程。研究表明，通过施加电压，系统可在液气比降低15%～20%的情况下仍维持98%以上的脱硫效率。该技术有望降低循环浆液泵的能耗，减少脱硫废水的排放。本研究明确了较优的操作工况区间，为现有脱硫系统的节能增效和改造提供了工业指导。

关键词(KeyWords)： 湿法烟气脱硫;荷电液滴;传质;离散相模型;多物理场;能耗优化

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52436005)

作者(Author): 徐炜娜,王军锋,高健,孙培哲

参考文献(References)：

• [1]中华人民共和国生态环境部. 2024中国生态环境状况公报[R].北京：中华人民共和国生态环境部，2025.Ministry of Ecology and Environment of the People's Republic of China. 2024 China Ecological Environment Status Bulletin[R].Beijing:Ministry of Ecology and Environment of the People's Republic of China,2025.
• [2]SLUSAREWICZ J H,KARPLUS V J. Changes in the temporal targeting of the US National Ambient Air Quality Standards(NAAQS)for SO2 reduce average and peak emissions from coal Power plants[J]. Environmental Science&Technology,2025,59(25):12437-12446.
• [3]HENNEMAN L,CHOIRAT C,DEDOUSSI I,et al. Mortality risk from United States coal electricity generation[J]. Science,2023,382(6673):941-946.
• [4]MAHLANGENI N,KAPWATA T,LABAN T,et al. Health risks of exposure to air pollution in areas where coal-fired power plants are located:protocol for a scoping review[J]. BMJ open,2024,14(3):e084074.
• [5]张建宇，潘荔，杨帆，等.中国燃煤电厂大气污染物控制现状分析[J].环境工程技术学报，2011,1(3):185-196.ZHANG J Y,PAN L,YANG F,et al. Study on current status of air pollution control for coal-fired power plants in China[J]. Journal of Environmental Engineering Technology,2011,1(3):185-196.
• [6]靳苏娜，吕瑞亮.湿法脱硫废水处理技术研究及应用进展[J].无机盐工业，2023,55(4):27-37.JIN S N, LU R L. Research and application progress of wet flue gas desulfurization wastewater treatment technology[J]. Inorganic Chemicals Industry,2023,55(4):27-37.
• [7]祝杰，吴振元，叶世超，等.石灰石-石膏湿法喷淋脱硫模型研究[J].高校化学工程学报，2015,29(1):220-225.ZHU J, WU Z Y, YE S C, et al. Modelling of wet limestone-gypsum flue gas desulfurization system in spray tower[J]. Journal of Chemical Engineering of Chinese Universities,2015,29(1):220-225.
• [8]KUMAR L,JANA S K. Advances in absorbents and techniques used in wet and dry FGD:a critical review[J]. Reviews in Chemical Engineering,2022,38(7):843-880.
• [9]林福全.燃煤电厂脱硫废水无软化高效蒸发浓缩工艺研究[J].电力科技与环保，2021,37(1):42-46.LIN F Q. Study on non softening and high efficiency evaporation concentration process of desulfurization wastewater from coal-fired power plant[J]. Electric Power Technology and Environmental Protection,2021,37(1):42-46.
• [10]王军锋，胡巍瀚，刘海龙，等.电场作用下气泡分散特性的实验研究[J].高电压技术，2019,45(11):3736-3742.WANG J F, HU W H, LIU H L, et al. Experimental investigation on bubble dispersion under electric field[J]. High Voltage Engineering,2019,45(11):3736-3742.
• [11]张伟，王军锋，苏巧玲，等.针-环电极配置下电场对气泡分散特性的影响[J].化工进展，2022,41(6):2931-2938.ZHANG W, WANG J F, SU Q L, et al. Effect of electric field on bubble dispersion characteristics under needle-ring electrode configuration[J]. Chemical Industry and Engineering Progress,2022,41(6):2931-2938.
• [12]HARTMANN J,SCH??R M T,HARDT S. Manipulation and control of droplets on surfaces in a homogeneous electric field[J]. Nature Communications,2022,13(1):289.
• [13]TAN G M, SHI Q H, SUN Y. Oscillatory transverse electric field enhances mass transfer and protein capacity in ion-exchange electrochromatography[J]. Journal of Chromatography A,2005,1098(1/2):131-137.
• [14]杜伯学，姚航，梁虎成，等.时变温差工况下直流GIL/GIS盆式绝缘子动态电场畸变抑制[J].电工技术学报，2024,39(9):2851-2859.DU B X,YAO H,LIANG H C,et al. Electric field relaxation of basin spacer under variable temperature gradient in DC-GIL/GIS[J].Transactions of China Electrotechnical Society,2024,39(9):2851-2859.
• [15]山本憲子，渡辺彰，中村富忠，等.イオウ酸化物の静電的捕集法[J]. Japan Analyst,1970,19(6):834-836.NORIKO Y,WATANABE A,TOMITADA N,et al. Electrostatic precipitation method for sulfur oxides[J]. Japan Analyst,1970,19(6):834-836.
• [16]CARLESON T E, BERG J C. The effect of electric fields on the absorption of pure sulfur dioxide by water drops[J]. Chemical Engineering Science,1983,38(6):871-876.
• [17]ZENG H C, GUO J, ZHOU J, et al. Sulfur dioxide(SO2)gas transfer process enhanced by corona discharge[J]. Journal of Electrostatics,2007,65(8):485-489.
• [18]DI NATALEA F,CAROTENUTOC C,MANNAA L,et al. Chemi-electro-hydrodynamic of sulphur dioxide absorption by electrified water sprays[J]. CHEMICAL ENGINEERING,2018,69.
• [19]LI Y,WANG Z,KONG Q,et al. Sulfur dioxide absorption by charged droplets in electrohydrodynamic atomization[J]. International Communications in Heat and Mass Transfer,2022,137:106275.
• [20]杨涛，刘代俊，陈建钧.外电场下二氧化硫的分子结构及其特性[J].物理学报，2016,65(5):62-68.YANG T, LIU D J, CHEN J J. Molecular structure and properties of sulfur dioxideunder the external electric field[J]. Acta Physica Sinica,2016,65(5):62-68.
• [21]霍元平，王军锋，毛文龙，等.荷电液滴脉动变形特性的实验研究[J].工程热物理学报，2013,34(1):99-102.HUO Y P, WANG J F, MAO W L, et al. Experimental study on oscillation and deformation of charged droplet[J]. Journal of Engineering Thermophysics,2013,34(1):99-102.
• [22]王军锋，左子文，霍元平.液滴演化及静电场下锥射流形成的数值模拟[J].工程热物理学报，2013,34(4):667-671.WANG J F, ZUO Z W, HUO Y P. Numerical simulation of droplet and EHD cone jet formation process[J]. Journal of Engineering Thermophysics,2013,34(4):667-671.
• [23]G??MEZ A,FUEYO N,TOM??S A. Detailed modelling of a flue-gas desulfurisation plant[J]. Computers&Chemical Engineering,2007,31(11):1419-1431.
• [24]王贞涛.石灰浆液双流体荷电喷雾烟气脱硫理论与试验研究[D].镇江：江苏大学，2008.WANG Z T. Theoretical and experimental research on flue gas desulfurization by two-fluid electrostatic spray of lime slurry[D].Zhenjiang:Jiangsu University,2008.
• [25]MAROCCO L, INZOLI F. Multiphase Euler–Lagrange CFD simulation applied to wet flue gas desulphurisation technology[J].International Journal of Multiphase Flow,2009,35(2):185-194.
• [26]CROWE C T, SCHWARZKOPF J D, SOMMERFELD M, et al. Multiphase flows with droplets and particles[M]. Boca Raton:CRC Press,2011.
• [27]WANG S, ZHU P, ZHANG G, et al. Numerical simulation research of flow field in ammonia-based wet flue gas desulfurization tower[J]. Journal of the Energy Institute,2015,88(3):284-291.
• [28]CHEN Z, WANG H, ZHUO J, et al. Experimental and numerical study on effects of deflectors on flow field distribution and desulfurization efficiency in spray towers[J]. Fuel processing technology,2017,162:1-12.
• [29]LAPIN A,L??BBERT A. Numerical simulation of the dynamics of two-phase gas—liquid flows in bubble columns[J]. Chemical Engineering Science,1994,49(21):3661-3674.
• [30]SHIH T-H,LIOU W W,SHABBIR A,et al. A new k-??eddy viscosity model for high reynolds number turbulent flows[J]. Computers&Fluids,1995,24(3):227-238.
• [31]MORSI S, ALEXANDER A. An investigation of particle trajectories in two-phase flow systems[J]. Journal of Fluid Mechanics,1972,55(2):193-208.
• [32]CHEN Z, WANG H, ZHUO J, et al. Enhancement of mass transfer between flue gas and slurry in the wet flue gas desulfurization spray tower[J]. Energy&Fuels,2018,32(1):703-712.
• [33]PERRY J H. Chemical engineers'handbook[M]. New York:ACS Publications,1950.
• [34]MONDAL M. Experimental determination of dissociation constant, Henry's constant, heat of reactions, SO2 absorbed and gas bubble–liquid interfacial area for dilute sulphur dioxide absorption into water[J]. Fluid phase equilibria,2007,253(2):98-107.
• [35]MAROCCO L. Modeling of the fluid dynamics and SO2 absorption in a gas–liquid reactor[J]. Chemical Engineering Journal, 2010,162(1):217-226.
• [36]DI NATALE F, PARISI A, CAROTENUTO C, et al. A model for the absorption rate in electrically charged droplets[J]. Chemical Engineering Science,2023,280:118964.
• [37]陆建荣，王贞涛，夏磊，等.荷电喷雾射流卷吸流场与脱硫传质试验研究[J].排灌机械工程学报，2017,35(10):881-886.LU J R,WANG Z T,XIA L,et al. Experiment on convolution flow and SO2 removal mass transfer in charged spray[J]. Journal of Drainage and Irrigation Machinery Engineering,2017,35(10):881-886.
• [38]ROSIN P. The laws governing the fineness of powdered coal[J]. Journal of the Institute of Fuel,1933,7(31):29-36.
• [39]EMEKWURU N, WATKINS A P. Analysis of a two-fluid sprayer and its use to develop the number size distribution moments spray model,Part II:Computational Analysis[J]. Atomization and Sprays,2010,20(8).
• [40]GANAN-CALVO A M. On the theory of electrohydrodynamically driven capillary jets[J]. Journal of Fluid Mechanics, 1997, 335:165-188.
• [41]CHEN J, ZHOU Y, HUANG X, et al. Ladderphane copolymers for high-temperature capacitive energy storage[J]. Nature, 2023,615(7950):62-66.
• [42]FERN??NDEZ A. Shear flow of an emulsion of drops less conductive than the suspending fluid immersed in an electric field by numerical simulation[J]. Colloids and Surfaces A:Physicochemical and Engineering Aspects,2009,338(1/2/3):68-79.
• [43]WEI Z, LI Y, COOKS R G, et al. Accelerated reaction kinetics in microdroplets:Overview and recent developments[J]. Annual Review of Physical Chemistry,2020,71(1):31-51.
• [44]张璐，钟文琪，李益国，等.面向DCS优化控制的氨法脱硫过程模拟[J].东南大学学报（自然科学版），2018,48(3):435-442.ZHANG L,ZHONG W Q,LI Y G,et al. Simulation of ammonia desulfurization process for DCS optimization control[J]. Journal of Southeast University(Natural Science Edition),2018,48(3):435-442.
• [45]HE W,BAIRD M,CHANG J. The effect of electric field on mass transfer from drops dispersed in a viscous liquid[J]. The Canadian Journal of Chemical Engineering,1993,71(3):366-376.
• [46]CHOI B, FLETCHER C. Turbulent particle dispersion in an electrostatic precipitator[J]. Applied Mathematical Modelling, 1998,22(12):1009-1021.
• [47]ZHANG H, CUI Y, ZHENG X. How electrostatic forces affect particle behaviour in turbulent channel flows[J]. Journal of Fluid Mechanics,2023,967:A8.
• [48]ROSTI M E,GE Z,JAIN S S,et al. Droplets in homogeneous shear turbulence[J]. Journal of Fluid Mechanics,2019,876:962-984.
• [49]罗艳，李鸣，杨大勇.微通道内电渗压力混合驱动幂律流体流动模拟[J].应用数学和力学，2016,37(4):373-381.LUO Y,LI M,YANG D Y. Simmulation of mixed electroosmotic and pressure-priven flows of power-law fluids in microchannels[J].Applied Mathematics and Mechanics,2016,37(4):373-381.
• [50]苏鹏宇，吴友佩.湿法FGD系统的一些参数对SO2吸收速率影响的研究[J].电力与能源，2014,35(4):495-498.SU P Y,WU Y P. Effect of some premier parameters on SO2 absorption rate in limestone-gypsum wet flue gas desulfurization system[J].Power&Energy,2014,35(4):495-498.
• [51]CHEN M,DENG X,HE F. Removal of SO2 from flue gas using basic aluminum sulfate solution with the byproduct oxidation inhibition by ethylene glycol[J]. Energy&Fuels,2016,30(2):1183-1191.
• [52]刘庆宏.电场下离子浓度对油水界面特性与液滴运动行为影响研究[D].哈尔滨：哈尔滨理工大学，2024.LIU Q H. Study on the influence of ion concentration on oil-water interface characteristics and droplet movement behavior under electric field[D]. Harbin:Harbin University of Science and Technology,2024.
• [53]李锐.金属锂电池负极材料的制备与电化学性能研究[D].济南：山东大学，2020.LI R. Syntheses and electrochemical performances of anode materials for lithium metal batteries[D]. Jinan:Shandong University,2020.
• [54]MANCIU M, RUCKENSTEIN E. Role of the hydration force in the stability of colloids at high ionic strengths[J]. Langmuir, 2001,17(22):7061-7070.
• [55]CHEN Z, DONG H, YU H, et al. In-situ electrochemical flue gas desulfurization via carbon black-based gas diffusion electrodes:Performance,kinetics and mechanism[J]. Chemical Engineering Journal,2017,307:553-561.
• [56]LANCIA A, MUSMARRA D, PEPE F, et al. SO2 absorption in a bubbling reactor using limestone suspensions[J]. Chemical Engineering Science,1994,49(24):4523-4532.
• [57]KUANG M, WANG J, HU X, et al. Seawater/seawater cascade-scrubbing desulfurization performance for exhaust gas of a 162-kW marine diesel engine[J]. Journal of Environmental Engineering,2020,146(1):04019090.
• [58]OH J M,KO S H,KANG K H. Shape oscillation of a drop in ac electrowetting[J]. Langmuir,2008,24(15):8379-8386.
• [59]HUANG C-H,KUMAR S. Electrostatic assist of liquid transfer between flat surfaces[J]. Langmuir,2018,34(17):5124-5137.