湿法脱硫浆液的氧化控制缺陷及对策

doi:10.16085/j.issn.1000-6613.2016.08.39

化工进展 ›› 2016, Vol. 35 ›› Issue (08): 2547-2552.DOI: 10.16085/j.issn.1000-6613.2016.08.39

湿法脱硫浆液的氧化控制缺陷及对策

马双忱, 杨静, 张立男, 华继洲, 于伟静

华北电力大学(保定)环境学院, 河北保定 071003

收稿日期:2015-12-29 修回日期:2016-02-24 出版日期:2016-08-05 发布日期:2016-08-05
通讯作者: 马双忱(1968—),男,教授,博士生导师。E-mail:msc1225@163.com。
作者简介:马双忱(1968—),男,教授,博士生导师。E-mail:msc1225@163.com。

Defects and countermeasures of slurry oxidation control in the Wet-FGD

MA Shuangchen, YANG Jing, ZHANG Linan, HUA Jizhou, YU Weijing

School of Environment, North China Electric Power University, Baoding 071003, Hebei, China

Received:2015-12-29 Revised:2016-02-24 Online:2016-08-05 Published:2016-08-05

摘要/Abstract

摘要： 针对近年来石灰石-石膏湿法脱硫技术在我国的应用和发展，论述了湿法脱硫浆液氧化控制的研究进展，详细介绍了亚硫酸盐氧化动力学的相关研究成果，指出当前电厂在工程实践中氧化控制存在重大缺陷，并针对该缺陷分析了问题症结，提出了脱硫浆液pH与ORP氧化双控制应对策略。着重分析应对方案的理论可行性，建立了S(Ⅳ)-S(Ⅵ)-H₂O体系理想状态下的电位-pH模型。结果表明：该方案具有兼顾脱硫系统SO₂气体吸收和CaSO₃氧化控制的双重优点，并能有效减少脱硫系统结垢、降低氧化风机能耗，优化亚硫酸钙氧化控制系统，提高石膏品质，表明该方案在脱硫浆液氧化控制中有很好的应用前景。

关键词: 脱硫浆液, 亚硫酸钙氧化, ORP控制, 电位-pH模型

Abstract: In view of the application and development of W-FGD technology of our country in recent years,this paper discusses the research progress of W-FGD sulfite oxidation control.The related research results of sulfite oxidation kinetics was introduced in detail,pointing out the major defects in the engineering practice of current power plant oxidation control,aiming at the defect analysis of the issue,and putting forward the slurry pH and ORP oxidation double control strategy.The theoretical feasibility of the plan was analyzed emphatically.Meanwhile,under the ideal state,the potential-pH model of the S(Ⅳ)-S(Ⅵ)-H₂O system was established.Results showed that the scheme has dual advantages of SO₂ gas absorption and the control of the CaSO₃ oxidation,and could effectively alleviate desulfurization system scaling,reduce energy consumption of the oxidation fan,optimize the control system of calcium sulfite oxidation,raise the quality of gypsum. The research indicates that the proposed scheme in sulfite oxidation control has a good application prospect.

Key words: desulfurization, sulfite oxidation, ORP control, potential-pH model

中图分类号:

X511

马双忱, 杨静, 张立男, 华继洲, 于伟静. 湿法脱硫浆液的氧化控制缺陷及对策[J]. 化工进展, 2016, 35(08): 2547-2552.

MA Shuangchen, YANG Jing, ZHANG Linan, HUA Jizhou, YU Weijing. Defects and countermeasures of slurry oxidation control in the Wet-FGD[J]. Chemical Industry and Engineering Progree, 2016, 35(08): 2547-2552.

参考文献

[1] 中国电力企业联合会.中国电力行业度发展报告2015 [R].北京:中国电力出版社,2015.
[2] 刘定平,陈博强.一种新型液包气雾化喷嘴流场特性的研究[J].动力工程学报,2013(6):466-471.
[3] 庞旭,薛勇,袁翀. 控制氧化对湿法烟气脱硫过程的影响研究[J].环境科学与技术,2008,31(5):87-90.
[4] 闫军. 湿法脱硫石膏浆液品质及控制施[A].全国发电机组技术协作会.全国火电200MW级机组技术协作会第24届年会论文集[C].全国发电机组技术协作会:2006..
[5] WARYCH J,SZYMANOWSKI M.Model of the wet limestone flue gas desulfurization process for cost optimization[J].Industrial & Engineering Chemistry Research,2001,40(12):2597-2605.
[6] 杨剑.湿法烟气脱硫氧化过程动力学研究[D].重庆:重庆大学,2008.
[7] 李守信,胡玉亭,纪立国.湿式石灰石-石膏法烟气脱硫中石膏质量的工艺控制因素[J].电力环境保护,2002(3):5-7.
[8] 汪黎东.烟气脱硫添加剂对正盐生成促进的实验研究[D].保定:华北电力大学(保定),2005.
[9] CHEN T I,BARRON C H. Some aspects of the homogeneous kinetics of sulfite oxidation [J]. Industrial & Engineering Chemistry Research,1972,11:466-470.
[10] MISHRA G C,SRIVASTAVA R D.Homogeneous kinetics of potassium sulfite oxidation[J].Chemistry Engineering Science,1976,31:969-971.
[11] LANCIA A,MUSMARRA D,PEPE F.Uncatalyzed heterogeneous oxidation of calcium bisulfite [J].Chemical Engineering Science,1996,51(16):3889-3896.
[12] KARATZA D,PRISCIANDARO M. Reaction rate of sulfite oxidation catalyzed by cuprous ions [J].Chemical Engineering Journal,2008,7:285-289.
[13] ZHAO B,LI Y,TONG H,ZHOU Y. Study on the reaction rate of sulfite oxidation with cobalt ion catalyst [J]. Chemical Engineering Science,2005,60:863-868.
[14] BRONIKOWSKA W,ZIAJKA J. Oxygen absorption into aqueous sulphur dioxide solutions [J]. Chemical Engineering Science,1985,40:1567-1572.
[15] BENGTSSON S,BJERLE I. Catalytic oxdiation of sulphite in diluted aqueous solutions [J]. Chemical Engineering Science,1975,30:1429-1435.
[16] GREENHALGH S H,MCMANAMEY W J,PORTER K E. An absorption peak in the oxidation of sodium sulphite solutions [J]. Chemical Engineering Science,1975,30:155-157.
[17] FREIBERG J. The mechanism of iron catalyzed oxidation of iron catalyzed oxidation of SO₂ in oxygenated solutions[J]. Atmospheric Environment,1975,9:661-672.
[18] HUSS A,LIM P K,ECKERT C A.The "uncatalyzed" oxidation of sulfur(Ⅳ)in aqueous solutions [J].Journal of the American Chemical Society,2002,100(19):6252-6253.
[19] KRAFT J,ELDIK R V.Kinetics and mechanism of the iron(Ⅲ)-catalyzed autoxidation of sulfur (Ⅳ) oxides in aqueous solution [J].Inorganic Chemistry,1989,28:2297-2312.
[20] WANG L D, WANG J, XU P Y,et al.Selectivity of transition metal catalysts in promoting the oxidation of solid sulfites in flue gas desulfurization [J].Applied Catalysis A,2015,10:52-60.
[21] 徐耀鹏,吕宏俊.强制氧化风量对湿法脱硫系统的影响分析[J]. 电站系统工程,2011(3):35-36+42.
[22] 吕宏俊.石灰石-石膏实发脱硫系统中强制氧化风量的分析[C]//中原经济区环境保护暨大气环境与气候学术会议,2012:539- 542.
[23] 马双忱,韩刚. 湿法烟气脱硫过程中石灰石离解模型及应用[J]. 电力科技与环保,2013(2):7-9.
[24] HONJO S,SUGITA S,NAKAYAMA Y,et al.MHI wet-FGD waste water treatment technologies[C]//Air and Waste Management Association-8th Power Plant Air Pollutant Control,Mega Symposium 2010:1395-1429.
[25] BROWN S. Causes & Impacts of WFGD ORP on Effluent Composition[EB/OL].Worldwide Pollution Control Association,2013,05.http://wpca.info/pdf/Presentations/Charlotte2013/4-Causes%20and%20Impact%20of%20WFGD%20ORP%20on%20Effluent%20Composition%20by%20Shannon%20Brown,%20BandW.pdf.
[26] 贾西部,金万元,李兴华,等.石灰石-石膏湿法烟气脱硫系统浆液起泡原因分析[J].中国电力,2015(9):157-160.
[27] 金萍,林开.湿法脱硫浆液中亚硫酸盐测量值偏小的原因分析[J]. 浙江电力,2009(2):68-71.
[28] PISU M,CINCOTTI A,CAO G,et al. Prediction of uncatalysed calcium bisulphite oxidation under operating conditions relevant to wet flue gas desulphurization plants [J]. Chemical Engineering Research and Design,2004,82(A7):927-932.
[29] 薛恒友,李小敏. 提高脱硫石膏生产品质的措施[J]. 粉煤灰,2010,22(3):32-40.
[30] 徐宏建,李浩然,孙肆鹃,等.有机酸添加剂强化电石渣脱硫的试验研究[J].动力工程学报,2015(8):659-665.
[31] 林蔚,江燕明. 浅谈电厂烟气脱硫浆液系统在线pH计测量系统的优化[J].中国科技信息,2009(11):159-160.

湿法脱硫浆液的氧化控制缺陷及对策

Defects and countermeasures of slurry oxidation control in the Wet-FGD

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