湿法烟气脱硫塔内传递与化学反应过程CFD模拟

曲江源; 齐娜娜; 关彦军; 滕阳; 徐文青; 朱廷钰; 张锴

doi:10.11949/j.issn.0438-1157.20181368

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湿法烟气脱硫塔内传递与化学反应过程CFD模拟

流体力学与传递现象 | 更新时间：2026-07-24

- 湿法烟气脱硫塔内传递与化学反应过程CFD模拟
- CFD simulation of transfer and chemical reaction process in wet flue gas desulfurization tower
- 化工学报 2019年70卷第6期页码：2117-2128
- 作者机构：
  
  1.华北电力大学热电生产过程污染物监测与控制北京市重点实验室，北京 102206
  2.中国科学院过程工程研究所湿法冶金清洁生产技术国家工程实验室，北京 100190
- 作者简介：
  
  曲江源（1993－），男，博士研究生，qujy_ncepu@163.com
  齐娜娜(1984－)，女，博士，讲师，qinanabaodi@163.com
- 基金信息：
  
  国家重点研发计划项目(2017YFC0210601);国家自然科学基金青年基金项目(51706070)
- DOI：10.11949/j.issn.0438-1157.20181368
  中图分类号： X 701.3
- 收稿：2018-11-18，
  
  修回：2019-03-10，
  
  网络首发：2020-06-15，
  
  纸质出版：2019-06-05
- 稿件说明：
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曲江源, 齐娜娜, 关彦军, 滕阳, 徐文青, 朱廷钰, 张锴. 湿法烟气脱硫塔内传递与化学反应过程CFD模拟[J]. 化工学报, 2019, 70(6): 2117-2128

QU Jiangyuan, QI Nana, GUAN Yanjun, TENG Yang, XU Wenqing, ZHU Tingyu, ZHANG Kai. CFD simulation of transfer and chemical reaction process in wet flue gas desulfurization tower[J]. CIESC Journal, 2019, 70(6): 2117-2128
曲江源, 齐娜娜, 关彦军, 滕阳, 徐文青, 朱廷钰, 张锴. 湿法烟气脱硫塔内传递与化学反应过程CFD模拟[J]. 化工学报, 2019, 70(6): 2117-2128 DOI： 10.11949/j.issn.0438-1157.20181368.

QU Jiangyuan, QI Nana, GUAN Yanjun, TENG Yang, XU Wenqing, ZHU Tingyu, ZHANG Kai. CFD simulation of transfer and chemical reaction process in wet flue gas desulfurization tower[J]. CIESC Journal, 2019, 70(6): 2117-2128 DOI： 10.11949/j.issn.0438-1157.20181368.

摘要

以某330 MW燃煤发电机组湿法烟气脱硫塔为研究对象，采用欧拉-拉格朗日方法建立了塔内气-液两相流动、热质交换模型，以溶解平衡、质量守恒及电荷守恒描述浆液内13种溶质组分瞬时化学反应特性，通过用户自定义函数实现流动模型与传质模型、化学反应模型的耦合。基于上述模型预测了脱硫塔内气-液两相流动、液滴蒸发与SO

化学吸收过程，获得了SO

浓度与浆液pH的径向分布特性，详细分析了气-液流动对化学吸收特性的影响，结果表明局部液气比分布特性是影响SO

径向分布的关键因素之一，可通过调控近壁区及主管道区的两相流动状态提高脱硫塔的吸收性能；随着气相侧SO

浓度提高或液滴粒径减小，浆液pH下降速率增大且各化学组分浓度达到稳定状态用时缩短。

Abstract

The Eulerian-Lagrangian method is employed to describe the gas-liquid flow and the heat and mass transfer process in a full-scale wet flue gas desulfurization(WFGD) tower

which is in operation at a 330 MW coal-fired power unit. Instantaneous chemical reactions involving 13 dissolved species in aqueous phase are assumed to be at equilibrium obeying mass balance for the specific chemical compositions and electro neutrality. The gas-liquid flow model is coupled with mass transfer and chemical reactions procedures through user defined functions (UDFs). The gas-liquid hydrodynamics

droplets evaporation and SO

chemical absorption is predicted in the spray scrubber. Radial distribution characteristics of SO

concentration and pH of the droplets are obtained and the effect of gas-liquid flow behavior on chemical absorption process is analyzed. The results show that the local liquid-gas ratio distribution is one of the key factors affecting the radial distribution of SO

. Furthermore

the absorption performance of the desulfurization tower can be improved by controlling the two-phase flow pattern in the area around the wall and that beneath the main pipe. The dro

p rates of pH increase with the raise of SO

concentration in flue gas or the decrease of droplet diameter. Besides

the higher concentration of SO

in gas phase or the smaller characteristic size of droplet can accelerate the process that the concentration of each chemical component reaches a stable state.

关键词

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references

史文峥 , 杨萌萌 , 张绪辉 , 等 . 燃煤电厂超低排放技术路线与协同脱除 [J ] . 中国电机工程学报 , 2016 , 36 ( 16 ): 4308 - 4318 .

Shi W Z , Yang M M , Zhang X H , et al . Ultra-low emission technical route of coal-fired power plants and the cooperative removal [J ] . Proceedings of the CSEE , 2016 , 36 ( 16 ): 4308 - 4318 .

潘丹萍 , 郭彦鹏 , 黄荣廷 , 等 . 石灰石-石膏法烟气脱硫过程中细颗粒物形成特性 [J ] . 化工学报 , 2015 , 66 ( 11 ): 4618 - 4625 .

Pan D P , Guo Y P , Huang R T , et al . Formation of fine particles in flue gas desulphurization process using limestone-gypsum [J ] . CIESC Journal , 2015 , 66 ( 11 ): 4618 - 4625 .

张东辉 , 庄烨 , 朱润儒 , 等 . 燃煤烟气污染物超低排放技术及经济分析 [J ] . 电力建设 , 2015 , 36 ( 5 ): 125 - 130 .

Zhang D H , Zhuang Y , Zhu R R , et al . Ultra-low air pollutant control technologies for coal-fired flue gas and its economic analysis [J ] . Electric Power Construction , 2015 , 36 ( 5 ): 125 - 130 .

张军 . 超低排放的湿法高效脱硫协同除尘的机理及模型研究 [D ] . 杭州 : 浙江大学 , 2018 .

Zhang J . Mechanism and model study on high efficiency desulfurization and dedust based on ultra-low emission technology [D ] . Hangzhou : Zhejiang University , 2018 .

张军 , 郑成航 , 张涌新 , 等 . 某1000MW燃煤机组超低排放电厂烟气污染物排放测试及其特性分析 [J ] . 中国电机工程学报 , 2016 , 36 ( 5 ): 1310 - 1314 .

Zhang J , Zheng C H , Zhang Y X , et al . Experimental investigation of ultra-low pollutants emission characteristics from a 1000MW coal-fired power plant [J ] . Proceedings of the CSEE , 2016 , 36 ( 5 ): 1310 - 1314 .

杨业 , 徐超群 , 朱燕群 , 等 . 臭氧氧化结合硫代硫酸钠溶液喷淋同时脱硫脱硝 [J ] . 化工学报 , 2016 , 67 ( 5 ): 2041 - 2047 .

Yang Y , Xu C Q , Zhu Y Q , et al . Simultaneous removal of SO 2 and NO x by combination of ozone oxidation and Na 2 S 2 O 3 solution spray [J ] . CIESC Journal , 2016 , 67 ( 5 ): 2041 - 2047 .

Córdoba P . Status of flue gas desulphurization (FGD) systems from coal-fired power plants: overview of the physic-chemical control processes of wet limestone FGDs [J ] . Fuel , 2015 , 144 : 274 - 286 .

Angelo J , Lightfoot E , Howard D . Generalization of the penetration theory for surface stretch: application to forming and oscillating drops [J ] . AIChE Journal , 1966 , 12 ( 4 ): 751 - 760 .

Altwicker E , Lindhjem C . Absorption of gases into drops [J ] . AIChE Journal , 1988 , 34 ( 34 ): 329 - 332 .

Hsu C , Shih S . Semiempirical equation for liquid-phase mass-transfer coefficient for drops [J ] . AIChE Journal , 1993 , 39 ( 6 ): 1090 - 1092 .

Brogren C , Karlsson H . Modeling the absorption of SO 2 , in a spray scrubber using the penetration theory [J ] . Chemical Engineering Science , 1997 , 52 ( 18 ): 3085 - 3099 .

Zhong Y , Gao X , Huo W , et al . A model for performance optimization of wet flue gas desulfurization systems of power plants [J ] . Fuel Processing Technology , 2008 , 89 ( 11 ): 1025 - 1032 .

祝杰 , 叶世超 , 吴振元 , 等 . 石灰石-石膏脱硫喷淋塔吸收区高度计算模型 [J ] . 化工学报 , 2014 , 65 ( 8 ): 2896 - 2901 .

Zhu J , Ye S C , Wu Z Y , et al . Mathematical modeling for height of absorption region in spray tower for limestone-gypsum wet flue gas desulfurization [J ] . CIESC Journal , 2014 , 65 ( 8 ): 2896 - 2901 .

Nygaard H , Kiil S , Johnsson J , et al . Full-scale measurements of SO 2 gas phase concentrations and slurry compositions in a wet flue gas desulphurization spray absorber [J ] . Fuel , 2004 , 83 ( 9 ): 1151 - 1164 .

Gao X , Huo W , Luo Z Y , et al . CFD simulation with enhancement factor of sulfur dioxide absorption in the spray scrubber [J ] . Journal of Zhejiang University-Science A(Applied Physics & Engineering) , 2008 , 9 ( 11 ): 1601 - 1613 .

Gómez A , Fueyo N , Tomás A . Detailed modeling of a flue-gas desulfurization plant [J ] . Computers & Chemical Engineering , 2007 , 31 ( 11 ): 1419 - 1431 .

Crowe C , Sharma M , Stock D . The particle-source-in cell (PSI-CELL) model for gas-droplet flow [J ] . Journal of Fluids Engineering , 1977 , 99 ( 2 ): 325 - 332 .

林永明 , 高翔 , 施平平 , 等 . 大型湿法烟气脱硫喷淋塔内阻力特性数值模拟 [J ] . 中国电机工程学报 , 2008 , 28 ( 5 ): 28 - 33 .

Lin Y M , Gao X , Shi P P , et al . Numerical simulation on resistance characteristic of large scale wet flue gas desulfurization spraying scrubber [J ] . Proceedings of the CSEE , 2008 , 28 ( 5 ): 28 - 33 .

钟毅 , 高翔 , 王惠挺 , 等 . 基于CFD技术的湿法烟气脱硫系统性能优化 [J ] . 中国电机工程学报 , 2008 , 28 ( 32 ): 18 - 23 .

Zhong Y , Gao X , Wang H T , et al . Performance optimization of wet flue gas desulphurization system based on CFD technology [J ] . Proceedings of the CSEE , 2008 , 28 ( 32 ): 18 - 23 .

Chen Z , Wang H M , Zhuo J K , 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 .

Marocco L , Inzoli F . Multiphase Euler-Lagrange CFD simulation applied to wet flue gas desulphurization technology [J ] . International Journal of Multiphase Flow , 2009 , 35 ( 2 ): 185 - 194 .

Marocco L . Modeling of the flui d dynamics and SO 2 absorption in a gas-liquid reactor [J ] . Chemical Engineering Journal , 2010 , 162 ( 1 ): 217 - 226 .

Montanes C , Gomez S A , Fueyo N , et al . Computational evaluation of wall rings in wet flue-gas desulfurization plants [J ] . International Journal of Energy for A Clean Environment , 2009 , 10 ( 1 / 2 / 3 / 4 ): 15 - 36 .

Mors S , Alexander A . An investigation of particle trajectories in two-phase flow systems [J ] . Journal of Fluid Mechanics , 1972 , 55 ( 2 ): 193 - 208 .

Wang Y , James P . Assessment of an eddy-interaction model and its refinements using predictions of droplet deposition in a wave-plate demister [J ] . Chemical Engineering Research & Design , 1999 , 77 ( 8 ): 692 - 698 .

林瑜 , 陈德珍 , 尹丽洁 . 喷淋层组合方式对大型脱硫塔内流动和热湿交换过程影响的数值模拟 [J ] . 中南大学学报(自然科学版) , 2017 , 48 ( 10 ): 2572 - 2582 .

Lin Y , Chen D Z , Yin L J . Numerical simulation of impact of spraying layers scheme on gas-liquid two-phases flow, heat and mass transfer in large scale desulphurization absorption tower [J ] . Journal of Central South University (Science and Technology) , 2017 , 48 ( 10 ): 2572 - 2582 .

Zhu J , Ye S C , Bai J , et al . A concise algorithm for calculating absorption height in spray tower for wet limestone-gypsum flue gas desulfurization [J ] . Fuel Processing Technology , 2015 , 129 : 15 - 23 .

Füller E N , Schettler P D , Giddings J C . New method for prediction of binary gas-phase diffusion coefficient [J ] . Industrial & Engineering Chemistry , 1966 , 58 ( 5 ): 19 - 27 .

Newton G H , Kramlich J , Payne R . Modeling the SO 2 -slurry droplet reaction .[J ] . AIChE Journal , 1990 , 36 ( 12 ): 1865 - 1872 .

Maurer G . On the solubility of volatile weak electrolytes in aqueous solutions—thermodynamics of aqueous systems with industrial applications [J ] . ACS Symposium , 1980 , 133 : 139 - 172 .

Neveux T , Moullec Y L . Wet industrial flue gas desulfurization unit: model development and validation on industrial data [J ] . Industrial & Engineering Chemistry Research , 2011 , 50 ( 12 ): 7579 - 7592 .

Wang P H , Zhuang L W , Dai G C . Synergistic effect of droplet self-adjustment and rod bank internal on fluid distribution in a WFGD spray column [J ] . Chemical Engineering Science , 2017 , 162 : 227 - 244 .

Tseng C C , Li C J . Eulerian-Eulerian numerical simulation for a flue gas desulfurization tower with perforated sieve trays [J ] . International Journal of Heat and Mass Transfer , 2018 , 116 : 329 - 345 .

Chen Z , You C F , Liu H Z , et al . The synergetic particles collection in three different wet flue gas desulfurization towers: a pilot-scale experimental investigation [J ] . Fuel Processing Technology , 2018 , 179 : 344 - 350 .

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