大型燃煤电站锅炉碳氧化率试验研究
|
摘要
国标GB/T32151.1—2015是目前发电行业核算CO_2排放量,并编制企业温室气体排放报告的参考标准。依据该标准规定的CO_2排放量核算方法,碳氧化率的核算准确程度会很大程度上影响CO_2核算的准确性。本文以40台大型燃煤电站锅炉的124次锅炉性能试验数据为基础,统计得到不同规模和类型锅炉碳氧化率的分布范围,同时从统计规律上研究了负荷率、煤质特性等因素与碳氧化率的相关关系。结果表明:300 MW及以上级别大型燃煤锅炉(不包括燃用无烟煤和贫煤锅炉)的碳氧化率均高于标准中推荐的缺省值98%,随着锅炉容量的提高,碳氧化率会有一定的上升;相同容量切圆燃烧锅炉的碳氧化率要明显高于对冲燃烧锅炉;碳氧化率与燃煤收到基灰分呈一定负相关关系,与燃煤全水分呈一定的正相关关系,而与锅炉负荷率、燃煤收到基含碳量和干燥无灰基挥发分的相关性很小。
China national standard GB/T 32151.1—2015 is the current reference standard for power generation enterprises to accounting CO_2 emission amounts and prepare the emission report for greenhouse gases. According to the standard, the accounting accuracy of the carbon oxidation rate will greatly affect the accounting accuracy of CO_2 emission. On the basis of 124 performance tests data for 40 large-scale coal-fired boilers, the distribution range of the carbon oxidation rate of the boilers with different scales and types was obtained statistically.Moreover, the relativity relationship between the carbon oxidation rate and load ratio or coal property was analyzed from statistical point of view. The results show that, the carbon oxidation rate of large-scale(300 MW and above) coal-fired boilers(except anthracite-and lean coal-fired boiler) was larger than the recommended value 98% of the standard. The carbon oxidation rate increased with the boiler scale and the carbon oxidation rate of the tangentially-fired boilers was higher than that of the opposed firing boilers. Besides, the carbon oxidation rate had weakly negative correlation with ash content of the coal and weakly positive correlation with total water content of the coal, while it was almost uncorrelated with the load ratio, the carbon content of the coal and the coal volatile matters.
China national standard GB/T 32151.1—2015 is the current reference standard for power generation enterprises to accounting CO_2 emission amounts and prepare the emission report for greenhouse gases. According to the standard, the accounting accuracy of the carbon oxidation rate will greatly affect the accounting accuracy of CO_2 emission. On the basis of 124 performance tests data for 40 large-scale coal-fired boilers, the distribution range of the carbon oxidation rate of the boilers with different scales and types was obtained statistically.Moreover, the relativity relationship between the carbon oxidation rate and load ratio or coal property was analyzed from statistical point of view. The results show that, the carbon oxidation rate of large-scale(300 MW and above) coal-fired boilers(except anthracite-and lean coal-fired boiler) was larger than the recommended value 98% of the standard. The carbon oxidation rate increased with the boiler scale and the carbon oxidation rate of the tangentially-fired boilers was higher than that of the opposed firing boilers. Besides, the carbon oxidation rate had weakly negative correlation with ash content of the coal and weakly positive correlation with total water content of the coal, while it was almost uncorrelated with the load ratio, the carbon content of the coal and the coal volatile matters.
引文
[1]康重庆,陈启鑫,夏清.低碳电力技术的研究展望[J].电网技术,2009,33(2):1-7.KANG Chongqing,CHEN Qixin,XIA Qing.Prospects of low-carbon electricity[J].Power System Technology,2009,33(2):1-7.
[2]温室气体排放核算与报告要求第1部分:发电企业:GB/T 32151.1-2015[S].北京:中国标准出版社,2015:1-19.Requirements of the greenhouse gas emission accounting and reporting:part 1:power generation enterprise:GB/T32151.1-2015[S].Beijing:China Stanadrds Press,2015:1-19.
[3]火力发电厂除灰设计技术规程:DL/T 5142-2012[S].北京:中国计划出版社,2012:75-77.Technical code for the design of ash handling system of fossil-fired power plant:DL/T 5142-2012[S].Beijing:China Planning Press,2012:75-77.
[4]周新刚.燃煤电站锅炉飞灰含碳量预测模型研究[D].济南:山东大学,2006:6-56.ZHOU Xingang.Study on prediction model of carbon content in fly ash of coal-fired power plant boiler[D].Jinan:Shandong University,2006:6-56.
[5]周永刚,王欢,王景,等.制粉方式及媒种对媒炭掺烧锅炉热力性能影响与方案优化[J].中国电力,2017,50(3):77-82.ZHOU Yonggang,WANG Huan,WANG Jing,et al.Impact of coal types and pulverizing methods of the thermal performance of blending-coal fired boilers and their operation optimization[J].Electric Power,2017,50(3):77-82.
[6]温文杰,马晓茜,刘翱.锅炉混煤掺烧的飞灰含碳量预测与运行优化[J].热力发电,2010,39(3):30-35.WEN Wenjie,MA Xiaoqian,LIU Ao.Prediction of unburned carbon content in fly ash and operation optimization for mixedly burning blended coal in boilers[J].Thermal Power Generation,2010,39(3):30-35.
[7]WU H D,HAN W,WANG D D,et al.A carbon oxidation factor regression model of coal-fired power plants in China[J].Journal of Cleaner Production,2017,142:4403-4411.
[8]李鑫,李振荣,赵亮富.中国燃料天然气二氧化碳排放因子的初步计算[J].现代化工,2016,36(6):11-14.LI Xin,LI Zhenrong,ZHAO Liangfu.The preliminary calculation of CO2 emission factors of different fuel natural gas in China[J].Modern Chemical Industry,2016,36(6):11-14.
[9]段志洁,张丽欣,李文波.燃煤电力企业温室气体排放量化方法对比分析[J].中国电力,2014,47(2):120-125.DUAN Zhijie,ZHANG Lixin,LI Wenbo.Comparison of GHG emission quantification methods for coal-fired electric power enterprises[J].Electric Power,2014,47(2):120-125.
[10]盖志杰,王鹏辉.燃煤电厂碳排放典型计算及分析[J].中国电力,2017,50(5):178-184.GAI Zhijie,WANG Penghui.A typical calculation and analysis of carbon emissions from coal-fired power plants[J].Electric Power,2017,50(5):178-184.
[11]刘睿,翟相彬.中国燃煤电厂碳排放量计算及分析[J].生态环境,2014,23(7):1164-1169.LIU Rui,ZHAI Xiangbin.Calculation of carbon emissions from China coal plants and the reduction suggestion[J].Ecology and Environmental Sciences,2014,23(7):1164-1169.
[12]吴汉栋,韩巍,高林.燃煤火电机组碳氧化因子分析与案例研究[J].工程热物理学报,2016,37(4):690-694.WU Handong,HAN Wei,GAO Lin.Carbon oxidation factor of coal-fired power plants and case study[J].Journal of Engineering thermophysics,2016,37(4):690-694.
[13]Fired steam generators performance test codes:ASMEPTC4-2013[S].The American Society of Mechanical Engineers,2014:1-272.
[14]电站锅炉性能试验规程:GB/T 10184-2015[S].北京:中国标准出版社,2016:1-72.Performance test code for utility boiler:GB/T 10184-2015[S].Beijing:China Standard Press,2016:1-72.
[15]温文杰.大型电站锅炉配煤掺烧的飞灰含碳量预测与优化运行[D].广州:华南理工大学,2010:1-58.WEN Wenjie.Prediction and optimal operation of carbon content in fly ash of large-scale power plant boiler with coal blending and burning[D].Guangzhou:Institutes of Technology of South China,2010:1-58.
[16]叶兆青.660 MW超临界对冲火焰燃煤锅炉飞灰含碳量预测与运行优化[D].长沙:长沙理工大学,2014:1-68.YE Zhaoqing.Prediction and operation optimization of carbon content in fly ash of 660 MW supercritical hedged flame coal-fired boiler[D].Changsha:Institutes of Technology of Changsha,2014:1-68.
[17]卫冬丽.中国燃煤电厂二氧化碳排放量计算方法研究[D].北京:北京交通大学,2014:1-78.WEI Dongli.Study on calculation method of carbon dioxide emission from coal-fired power plants in China[D].Beijing:Beijing Jiaotong University,2014:1-78.
[2]温室气体排放核算与报告要求第1部分:发电企业:GB/T 32151.1-2015[S].北京:中国标准出版社,2015:1-19.Requirements of the greenhouse gas emission accounting and reporting:part 1:power generation enterprise:GB/T32151.1-2015[S].Beijing:China Stanadrds Press,2015:1-19.
[3]火力发电厂除灰设计技术规程:DL/T 5142-2012[S].北京:中国计划出版社,2012:75-77.Technical code for the design of ash handling system of fossil-fired power plant:DL/T 5142-2012[S].Beijing:China Planning Press,2012:75-77.
[4]周新刚.燃煤电站锅炉飞灰含碳量预测模型研究[D].济南:山东大学,2006:6-56.ZHOU Xingang.Study on prediction model of carbon content in fly ash of coal-fired power plant boiler[D].Jinan:Shandong University,2006:6-56.
[5]周永刚,王欢,王景,等.制粉方式及媒种对媒炭掺烧锅炉热力性能影响与方案优化[J].中国电力,2017,50(3):77-82.ZHOU Yonggang,WANG Huan,WANG Jing,et al.Impact of coal types and pulverizing methods of the thermal performance of blending-coal fired boilers and their operation optimization[J].Electric Power,2017,50(3):77-82.
[6]温文杰,马晓茜,刘翱.锅炉混煤掺烧的飞灰含碳量预测与运行优化[J].热力发电,2010,39(3):30-35.WEN Wenjie,MA Xiaoqian,LIU Ao.Prediction of unburned carbon content in fly ash and operation optimization for mixedly burning blended coal in boilers[J].Thermal Power Generation,2010,39(3):30-35.
[7]WU H D,HAN W,WANG D D,et al.A carbon oxidation factor regression model of coal-fired power plants in China[J].Journal of Cleaner Production,2017,142:4403-4411.
[8]李鑫,李振荣,赵亮富.中国燃料天然气二氧化碳排放因子的初步计算[J].现代化工,2016,36(6):11-14.LI Xin,LI Zhenrong,ZHAO Liangfu.The preliminary calculation of CO2 emission factors of different fuel natural gas in China[J].Modern Chemical Industry,2016,36(6):11-14.
[9]段志洁,张丽欣,李文波.燃煤电力企业温室气体排放量化方法对比分析[J].中国电力,2014,47(2):120-125.DUAN Zhijie,ZHANG Lixin,LI Wenbo.Comparison of GHG emission quantification methods for coal-fired electric power enterprises[J].Electric Power,2014,47(2):120-125.
[10]盖志杰,王鹏辉.燃煤电厂碳排放典型计算及分析[J].中国电力,2017,50(5):178-184.GAI Zhijie,WANG Penghui.A typical calculation and analysis of carbon emissions from coal-fired power plants[J].Electric Power,2017,50(5):178-184.
[11]刘睿,翟相彬.中国燃煤电厂碳排放量计算及分析[J].生态环境,2014,23(7):1164-1169.LIU Rui,ZHAI Xiangbin.Calculation of carbon emissions from China coal plants and the reduction suggestion[J].Ecology and Environmental Sciences,2014,23(7):1164-1169.
[12]吴汉栋,韩巍,高林.燃煤火电机组碳氧化因子分析与案例研究[J].工程热物理学报,2016,37(4):690-694.WU Handong,HAN Wei,GAO Lin.Carbon oxidation factor of coal-fired power plants and case study[J].Journal of Engineering thermophysics,2016,37(4):690-694.
[13]Fired steam generators performance test codes:ASMEPTC4-2013[S].The American Society of Mechanical Engineers,2014:1-272.
[14]电站锅炉性能试验规程:GB/T 10184-2015[S].北京:中国标准出版社,2016:1-72.Performance test code for utility boiler:GB/T 10184-2015[S].Beijing:China Standard Press,2016:1-72.
[15]温文杰.大型电站锅炉配煤掺烧的飞灰含碳量预测与优化运行[D].广州:华南理工大学,2010:1-58.WEN Wenjie.Prediction and optimal operation of carbon content in fly ash of large-scale power plant boiler with coal blending and burning[D].Guangzhou:Institutes of Technology of South China,2010:1-58.
[16]叶兆青.660 MW超临界对冲火焰燃煤锅炉飞灰含碳量预测与运行优化[D].长沙:长沙理工大学,2014:1-68.YE Zhaoqing.Prediction and operation optimization of carbon content in fly ash of 660 MW supercritical hedged flame coal-fired boiler[D].Changsha:Institutes of Technology of Changsha,2014:1-68.
[17]卫冬丽.中国燃煤电厂二氧化碳排放量计算方法研究[D].北京:北京交通大学,2014:1-78.WEI Dongli.Study on calculation method of carbon dioxide emission from coal-fired power plants in China[D].Beijing:Beijing Jiaotong University,2014:1-78.