凝结水精处理系统节水减排降耗关键技术
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摘要
凝结水精处理系统会消耗大量的除盐水,占电厂除盐水消耗总量的50%以上,且设备再生过程中产生的酸碱废水也是高盐废水的重要来源。对此,可通过增大周期制水量和减少自用水量大幅度降低自用水耗。采用西安热工研究院有限公司研发的凝结水精处理系统节水减排降耗新技术,其中包括高速混床运行优化技术、精处理混床智能控制技术、提高高速混床布水均匀性技术以及再生废液中氯离子减排技术,显著地提高了凝结水设备的周期制水量,降低水耗,同时大幅节约除盐水和新鲜水,减少废水排放量和酸碱用量,并且能够极大地降低废水零排放工程的造价和运行费用。这种过程节水法已在国内三十多家大型发电厂成功应用,是一种低成本的节水方式,具有良好的推广应用前景。
Condensate polishing treatment system consumes a large amount of desalted water, which accounts for more than 50% of the total desalted water consumption in power plants, and the acid-base wastewater produced in the process of equipment regeneration is also an important source of high salt wastewater. The ratio of water consumption can be sharply reduced by increasing the cycle water production and decreasing the self water consumption. Xi'an Thermal Power Research Institute Co., Ltd. Has developed a new technology for water saving, emission reduction and consumption reduction of condensate polishing treatment system, which includes the optimization technology of operation in high flowrate mixed-bed(HFMB), the intelligent control technology of polishing treatment mixed bed, the uniform enhancement technology of water distribution in HFMB, and the reduction of chloridion concentration in regenerated waste liquid. All the above technologies can evidently increase the cycle production, reduce the water consumption ratio, save the desalinated water and fresh water significantly, and decrease the waste water discharge and consumption of acid-alkali wastewater. Moreover, these technologies can greatly decrease the cost of zero discharge and operation fees. This method of water saving in process has been successfully used in more than thirty power plants in China. It is a low cost water saving method and has good popularization and application prospect.
Condensate polishing treatment system consumes a large amount of desalted water, which accounts for more than 50% of the total desalted water consumption in power plants, and the acid-base wastewater produced in the process of equipment regeneration is also an important source of high salt wastewater. The ratio of water consumption can be sharply reduced by increasing the cycle water production and decreasing the self water consumption. Xi'an Thermal Power Research Institute Co., Ltd. Has developed a new technology for water saving, emission reduction and consumption reduction of condensate polishing treatment system, which includes the optimization technology of operation in high flowrate mixed-bed(HFMB), the intelligent control technology of polishing treatment mixed bed, the uniform enhancement technology of water distribution in HFMB, and the reduction of chloridion concentration in regenerated waste liquid. All the above technologies can evidently increase the cycle production, reduce the water consumption ratio, save the desalinated water and fresh water significantly, and decrease the waste water discharge and consumption of acid-alkali wastewater. Moreover, these technologies can greatly decrease the cost of zero discharge and operation fees. This method of water saving in process has been successfully used in more than thirty power plants in China. It is a low cost water saving method and has good popularization and application prospect.
引文
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[10]和慧勇,田文华,贾予平,等.凝结水经处理运行优化技术在1 000 MW机组上的应用[J].热力发电,2014,43(12):110-113.HE Huiyong,TIAN Wenhua,JIA Yuping,et al.Application of condensate polishing operation optimization technology in a 1 000 MW unit[J].Thermal Power Generation,2014,43(12):110-113.
[11]田文华,雷俊茹,祝晓亮,等.高速混床树脂分离与输送过程的智能监控[J].中国电力,2015,48(11):22-25.TIAN Wenhua,LEI Junru,ZHU Xiaoliang,et al.Intelligent monitoring of resins separation and transportation for mixed bed polisher[J].Electric Power,2015,48(11):22-25.
[12]田文华,李鹏,和慧勇.空冷机组凝结水精处理系统设备优化配置[J].热力发电,2009,38(3):81-84.TIAN Wenhua,LI Peng,HE Huiyong.Optimization allocation of the condensate polishing system for direct air-cooling units[J].Thermal Power Generation,2009,38(3):81-84.
[13]韩隶传,李志刚.凝结水精处理混床机理和应用研究[J].中国电力,2007,40(12):90-93.HAN Lichuan,LI Zhigang.Mechanism and application of condensate polishing mixed bed[J].Electric Power,2007,40(12):90-93.
[14]田文华,祝晓亮.一种小阻力高速混床进水分配装置:201721260523.5[P].2017-09-28.TIAN Wenhua,ZHU Xiaoliang.A water distribution device for high speed mixed bed with low resistance:201721260523.5[P].2017-09-28.
[15]田文华.电力系统化学与环保试验[M].北京:中国电力出版社,2018:62-64.TIAN Wenhua.Power system chemistry and environmental protection test technical improvement methods[J].Beijing:China Electric Power Press,2018:62-64.
[2]李培元,周柏青.火力发电厂水处理及水质控制[M].3版.北京:中国电力出版社,2018:468-479.LI Peiyuan,ZHOU Baiqing.Thermal power plant water treatment and water quality control[M].3rd ed.Beijing:China Electric Power Press,2018:468-479.
[3]周柏青,陈志和.热力发电厂水处理[M].4版.北京:中国电力出版社,2009:255-279.ZHOU Baiqing,CHEN Zhihe.Thermal power plant water treatment[M].4th ed.Beijing:China Electric Power Press,2009:255-279.
[4]杨东方.凝结水处理[M].北京:水利电力出版社,1989:10.YANG Dongfang.Condensate water treatment[M].Beijing:Water Resource and Electric Press,1989:10.
[5]吕富忠,赵爱民,祝晓亮,等.火电厂凝结水精处理设备技改方法及效果实例[J].水处理技术,2014,40(6):123-125.LV Fuzhong,ZHAO Aimin,ZHU Xiaoliang,et al.Technical improvement methods and effect of condensate polishing equipment in thermal power plant[J].Technology of Water Treatment,2014,40(6):123-125.
[6]中华人民共和国国家能源局.火电厂凝结水精处理系统技术要求第1部分:湿冷机组:DL/T333.1-2010[S].北京:中国电力出版社,2011:5.National Energy Administration of the People’s Republic of China.Technique requirements of condensate polishing in thermal power plant part 1:water-cooled unit:DL/T 333.1-2010[S].Beijing:China Electric Power Press,2011:5.
[7]张广文,李鹏,田文华,等.直接空冷机组极高pH下高混长期稳定运行技术[J].水处理技术,2018,44(7):123-125.ZHANG Guangwen,LI Peng,TIAN Wenhua,et al.Techniques of long-term stable operation of high-speed mixed bed with high pH in direct air cooling unit[J].Technology of Water Treatment,2018,44(7):123-125.
[8]中华人民共和国国家质量监督检验检疫总局,中华人民共和国国家标准化管理委员会.火力发电机组及蒸汽动力设备水汽质量:GB/T 12145-2016[S].北京:中国标准出版社,2016:2.General Administration of Quality Supervision,Inspection and Quarantine of the People’s Republic of China,Standardization Administration of the People’s Republic of China.Quality criterion of water and steam for power plant and steam-generating equipment:GB/T 12145-2016[S].Beijing:Standards Press of China,2016:2.
[9]韩隶传,和慧勇,田文华,等.分离系数与混合系数的定义和应用[J].热力发电,2010,39(9):11-13.HAN Lichuan,HE Huiyong,TIAN Wenhua,et al.Definitions of separation coefficient and mixing coefficient as well as their application[J].Thermal Power Generation,2010,39(9):11-13.
[10]和慧勇,田文华,贾予平,等.凝结水经处理运行优化技术在1 000 MW机组上的应用[J].热力发电,2014,43(12):110-113.HE Huiyong,TIAN Wenhua,JIA Yuping,et al.Application of condensate polishing operation optimization technology in a 1 000 MW unit[J].Thermal Power Generation,2014,43(12):110-113.
[11]田文华,雷俊茹,祝晓亮,等.高速混床树脂分离与输送过程的智能监控[J].中国电力,2015,48(11):22-25.TIAN Wenhua,LEI Junru,ZHU Xiaoliang,et al.Intelligent monitoring of resins separation and transportation for mixed bed polisher[J].Electric Power,2015,48(11):22-25.
[12]田文华,李鹏,和慧勇.空冷机组凝结水精处理系统设备优化配置[J].热力发电,2009,38(3):81-84.TIAN Wenhua,LI Peng,HE Huiyong.Optimization allocation of the condensate polishing system for direct air-cooling units[J].Thermal Power Generation,2009,38(3):81-84.
[13]韩隶传,李志刚.凝结水精处理混床机理和应用研究[J].中国电力,2007,40(12):90-93.HAN Lichuan,LI Zhigang.Mechanism and application of condensate polishing mixed bed[J].Electric Power,2007,40(12):90-93.
[14]田文华,祝晓亮.一种小阻力高速混床进水分配装置:201721260523.5[P].2017-09-28.TIAN Wenhua,ZHU Xiaoliang.A water distribution device for high speed mixed bed with low resistance:201721260523.5[P].2017-09-28.
[15]田文华.电力系统化学与环保试验[M].北京:中国电力出版社,2018:62-64.TIAN Wenhua.Power system chemistry and environmental protection test technical improvement methods[J].Beijing:China Electric Power Press,2018:62-64.