[1]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.[doi:10.3969/j.issn.1001-0505.2018.03.009]
 Zhang Lu,Zhong Wenqi,Li Yiguo,et al.Simulation of ammonia desulfurization process for DCS optimization control[J].Journal of Southeast University (Natural Science Edition),2018,48(3):435-442.[doi:10.3969/j.issn.1001-0505.2018.03.009]
点击复制

面向DCS优化控制的氨法脱硫过程模拟()
分享到:

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
48
期数:
2018年第3期
页码:
435-442
栏目:
能源与动力工程
出版日期:
2018-05-20

文章信息/Info

Title:
Simulation of ammonia desulfurization process for DCS optimization control
作者:
张璐钟文琪李益国展锦程
东南大学能源热转换及其过程测控教育部重点实验室, 南京 210096
Author(s):
Zhang Lu Zhong Wenqi Li Yiguo Zhan Jincheng
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China
关键词:
氨法脱硫 喷淋塔 脱硫效率 优化控制
Keywords:
ammonia desulfurization spray tower desulfurization efficiency optimization control
分类号:
TK16
DOI:
10.3969/j.issn.1001-0505.2018.03.009
摘要:
为了实现氨法脱硫过程优化控制,建立了脱硫塔喷淋脱硫过程气液流动与化学反应耦合的三维数理模型,气相场采用k-ε湍流模型,喷淋液采用颗粒轨道模型,SO2的吸收基于双膜理论.以2个单塔烟气处理量750 000 m3/h的喷淋塔为对象,通过数值模拟考察了烟气流速、入口烟气SO2浓度、液气比对脱硫效率的影响.研究结果显示:随着烟气流速及入口SO2浓度增大、液气比的降低,脱硫效率降低.在此基础上,结合现场运行数据,构建了DCS优化控制函数,采用Visual C++与MATLAB混合编程开发了流场可视化模块,并将其嵌入DCS系统中.在360 MW热电厂烟气脱硫系统上,实现了氨法脱硫过程数据的实时显示分析和优化控制,确保了脱硫效率在95%~99%之间.
Abstract:
A three-dimensional numerical model for a desulfurization tower gas-liquid flow coupling with chemical reaction in mass transfer of the ammonia desulfurization process was established to achieve the optimization control. The k-ε turbulence model was used for the gas phase trajectories were calculated by a discrete particle model and the two-film theory absorption model was used for the absorption of SO2. The influences of gas velocity, the initial concentration of SO2 and liquid-gas ratio on the desulfurization efficiency(η)of sulfur dioxide were studied by the numerical simulation on a model of two spray tower and single tower flue gas was 750 000 m3/h. Research results show that the desulfurization efficiency decreases with the increase of the gas velocity and the initial concentration of SO2, or with the decrease of liquid-gas ratio. The DCS(distributed control system)optimization control function is established combined with the field operation data based on the numerical simulation result. The flow field visualization module is developed and loaded to the DCS of power plant combined with the optimization control function by the using of Visual C++ and MATLAB mixed programming. The real-time analysis on data and DCS optimization control is realized in the flue gas desulfurization system of 360 MW thermal power plant and desulfurization efficiencies are ensured by 95% to 99%.

参考文献/References:

[1] 徐长香,傅国光. 氨法烟气脱硫技术综述 [J]. 电力环境保护,2005,21(2):17-20. DOI:10.3969/j.issn.1674-8069.2005.02.007.
Xu Changxiang, Fu Guoguang. Review on ammonia flue gas desulfurization [J].Electric Power Environmental Protection, 2005, 21(2): 17-20. DOI:10.3969/j.issn.1674-8069.2005.02.007. (in Chinese)
[2] Marocco Luca, Inzoli Fabio. Multiphase Euler-Lagrange CFD simulation applied to wet flue gas desulphurisation technology [J]. International Journal of Multiphase Flow, 2009, 35(2): 185-194. DOI:10.1016/j.ijmultiphaseflow.2008.09.005.
[3] Yan Jinpei, Bao Jingjing, Yang Linjun, et al. The formation and removal characteristics of aerosols in ammonia-based wet flue gas desulfurization [J]. Journal of Aerosol Science, 2011, 42(9): 604-614. DOI:10.1016/j.jaerosci.2011.05.005.
[4] 刘国荣,王政威,魏玉垒,等.喷淋塔氨法烟气脱硫模型与实验研究[J].化工学报,2010,61(9):2463-2467.
  Liu Guorong, Wang Zhengwei, Wei Yulei, et al. Experimental study and modeling for ammonia desulfurization in pray tower [J].Journal of Chemical Industry and Engineering, 2010, 61(9): 2463-2467.(in Chinese)
[5] 石振晶,陶明,何育东,等.喷淋脱硫塔内除雾器性能数值模拟[J].热力发电,2016,45(3):92-102. DOI:10.3969/j.issn.1002-3364.2016.03.092.
Shi Zhenjing, Tao Ming, He Yudong, et al. Numerical simulation on demister performance of spray tower desulfurization system [J].Thermal Power Generation, 2016, 45(3): 92-102. DOI:10.3969/j.issn.1002-3364.2016.03.092. (in Chinese)
[6] 丁开翔,郭永红,王勇强,等.不同喷淋层布置的脱硫塔流场优化数值模拟[J].电站系统工程,2016,32(1):24-27.
  Ding Kaixiang, Guo Yonghong, Wang Yongqiang, et al. Flow fie1d optimization of FGD under different spray levels operation by numerical simulation [J].Power System Engineering, 2016, 32(1): 24-27.(in Chinese)
[7] 杨春和,李贤.氨法烟气脱硫制亚硫酸氢铵过程模拟优化[J].现代化工,2017,37(3):199-202. DOI:10.16606/j.cn ki.issn0253-4320.2017.03048.
Yang Chunhe, Li Xian. Process simulation and optimization for ammonia-based flue gas desulfurization to ammonium bisulfite [J].Modern Chemical Industry, 2017, 37(3): 199-202. DOI:10.16606/j.cnki.issn0253-4320. 2017.03048.
[8] Zhang Qi, Wang Shijie, Zhu Ping, et al. Full-scale simulation of flow field in ammonia-based wet flue gas desulfurization double tower [J]. Journal of the Energy Institute, 2017, 1(11): 1-11. DOI:10.1016/j.joei.2017.02.010.
[9] Jia Yong, Yin Liguo, Xu Yalin, et al. Simulation of the absorption of SO2 by ammonia in a spray scrubber [J]. Chemical Engineering and Processing, 2017, 116: 60-67. DOI:10.1016/j.cep.2017.03.001.
[10] 居静. 钢铁烧结烟气脱硫脱硝的数值模拟与工程试验 [D]. 南京:东南大学能源与环境学院,2014.
[11] 居静. 旋转喷雾塔Ca(OH)2/NaClO2联合脱硫脱硝数值模拟[J]. 东南大学学报(自然科学版),2014,44(5):968-974. DOI:10.3969/j.issn.1001-0505.2014.05.017.
Ju Jing. Numerical simulation of simultaneous desulfurization and denitration using Ca(OH)2/NaClO2 in rotary spray tower [J]. Journal of Southeast University(Natural Science Edition), 2014, 44(5): 968-974. DOI:10.3969/j.issn.1001-0505.2014.05.017. (in Chinese)
[12] Marocco Luca. Modeling of the fluid dynamics and SO2 absorption in a gas-liquid reactor [J]. Chemical Engineering Journal, 2010, 162(1): 217-226. DOI:10.1016/j.cej.2010.05.033.
[13] 贾勇,钟秦,杜冬冬,等. 填料塔氨法脱硫模型研究 [J]. 中国机电工程学报,2009,29(14):52-57.
  Jia Yong, Zhong Qin, Du Dongdong, et al. Research on ammonia desulphurization model of packed column [J].Proceeding of the CSEE, 2009, 29(14): 52-57.(in Chinese)
[14] 赵喆,田贺忠.颗粒轨道模型用于烟气脱硫喷淋塔两相流数值模拟[J].环境科学,2005,26(6):33-37. DOI:10.13227/j.hjkx.2005.06.007.
Zhao Zhe, Tian Hezhong. Particle trajectory model used in numerical simulation of flue gas desulfurization spray tower [J]. Environment Science, 2005, 26(6): 33-37. DOI:10.13227/j.hjkx.2005.06.007. (in Chinese)
[15] 陈梅倩,何伯述,陈广华.氨法脱硫反应特性的化学动力学分析[J].环境科学学报,2005,25(7):886-890.DOI:10.13671/j.hjkxxb.2005.07.005.
Chen Meiqian, He Boshu, Chen Guanghua. Chemical kinetics based analyses on SO2 removal reactions by ammonia scrubbing [J]. Acta Scientiae Circumstantiae, 2005, 25(7): 886-890.DOI:10.13671/j.hjkxxb.2005.07.005. (in Chinese)
[16] 李立清,胡蔷,黄贵杰,等. 环栅喷淋泡沫塔欧拉-离散相模型三相除尘模拟[J].中国电机工程学报,2012,32(5):68-77.
  Li Liqing, Hu Qiang, Huang Guijie, et al. Numerical simulation of three-phase flow in the scrubber for a cascade-ring foam tower using a combined Euler-discrete phase model method [J]. Proceeding of the CSEE, 2012, 32(5): 68-77.(in Chinese)
[17] 李立清,张纯,黄贵杰. 多组分颗粒轨道模型氨法脱硫过程仿真研究[J]. 中国电机工程学报,2014,34(32):5741-5749.DOI:10.13334/j.0258-8013.pcsee.2014.32.007.
Li Liqing, Zhang Chun, Huang Guijie. A multicomponent droplet model in simulating mass transfer of the ammonia-based spray process [J]. Proceeding of the CSEE, 2014, 34(32): 5741-5749.DOI:10.13334/j.0258-8013.pcsee.2014.32.007. (in Chinese)

相似文献/References:

[1]金保升,赵健植,仲兆平,等.基于响应曲面法研究喷淋塔的脱硫效率[J].东南大学学报(自然科学版),2007,37(3):446.[doi:10.3969/j.issn.1001-0505.2007.03.019]
 Jin Baosheng,Zhao Jianzhi,Zhong Zhaoping,et al.Desulphurization efficiency with spray tower by response surface methodology[J].Journal of Southeast University (Natural Science Edition),2007,37(3):446.[doi:10.3969/j.issn.1001-0505.2007.03.019]

备注/Memo

备注/Memo:
收稿日期: 2017-10-10.
作者简介: 张璐(1992—),女,硕士生;钟文琪(联系人),男,博士,教授,博士生导师,wqzhong@seu.edu.cn.
基金项目: 国家重点研发计划资助项目(2016YFB0600802)、江苏省环保科研课题资助项目(2015018).
引用本文: 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. DOI:10.3969/j.issn.1001-0505.2018.03.009.
更新日期/Last Update: 2018-05-20