CAJ | 학술논문

为了解我国火力发电行业温室气体排放状况及排放因子,利用U23多组分红外气体分析仪及TH880F烟尘分析仪对全国30台具有代表性的火力发电机组排放的CO_2和N_2O进行了在线监测;监测及后续的数据处理阶段均遵循了联合国政府间气候变化专门委员会(IPCC)关于温室气体排放计算的质量保证和质量控制原则.利用统计学方法对数据进行处理,给出了CO_2和N_2O 3种表达方式的排放因子.结果表明:CO_2排放因子主要受装机容量、燃料及机组使用年限与维护质量的影响;常规煤粉机组的N_2O排放因子随装机容量的增加逐渐变小,循环流化床机组N_2O排放因子最大;与IPCC缺省排放因子的比较表明,烟煤、褐煤的CO_2和N_2O排放因子均在IPCC缺省因子95%置信区间内,贫煤CO_2和N_2O的排放因子均大于IPCC缺省因子;天然气CO_2和N_2O排放因子与IPCC缺省因子相差不大.
위료해아국화력발전행업온실기체배방상황급배방인자,이용U23다조분홍외기체분석의급TH880F연진분석의대전국30태구유대표성적화력발전궤조배방적CO_2화N_2O진행료재선감측;감측급후속적수거처리계단균준순료연합국정부간기후변화전문위원회(IPCC)관우온실기체배방계산적질량보증화질량공제원칙.이용통계학방법대수거진행처리,급출료CO_2화N_2O 3충표체방식적배방인자.결과표명:CO_2배방인자주요수장궤용량、연료급궤조사용년한여유호질량적영향;상규매분궤조적N_2O배방인자수장궤용량적증가축점변소,순배류화상궤조N_2O배방인자최대;여IPCC결성배방인자적비교표명,연매、갈매적CO_2화N_2O배방인자균재IPCC결성인자95%치신구간내,빈매CO_2화N_2O적배방인자균대우IPCC결성인자;천연기CO_2화N_2O배방인자여IPCC결성인자상차불대.
Greenhouse gas (GHG) emissions from Chinese thermal power plants and the associated emission factors were investigated through on-line measurements at 30 typical generating units.Ultramat 23 Gas Analyzer and TH880F Flue Gas Analyzer were used to measure the CO_2 and N_2O emissions.The measurements and subsequent data manipulations were undertaken in accordance with the Intergovernmental Panel on Climate Change (IPCC) quality assurance (QA) and quality control (QC) for the calculation of GHG emissions.The CO_2 and N_2O emission factors were calculated using a statistical method and expressed in three different ways.Results showed that CO_2 emission factors were affected by installed capacity,fuel characteristics and age of the unit and its maintenance standard.N_2O emission factors of pulverized coal-fired units decreased with increased installed capacity,and the value was highest in circulating fluidized beds.A comparison with the IPCC calculations was then made,and it was found that CO_2 and N_2O emission factors of bituminous coal and lignite stay within the 95% confidence interval of IPCC default values,but those of sub-bituminous coal were higher than the IPCC default values.CO_2 and N_2O emission factors of natural gas had little difference with the IPCC default values.