中国平板玻璃行业大气污染物排放特征研究

Emission characteristics from flat-glass industry in China

基于中国2013～2015年27个省(区、市)平板玻璃企业的逐生产线基础信息、活动水平及污染物控制技术等数据,建立了平板玻璃主要大气污染物SO_2、NO_x排放量计算方法和排放清单,使用蒙特卡洛法进行了不确定性分析.统计了平板玻璃产量、燃料使用量、燃料结构以及污染物控制技术,分析了排放特征与空间差异.结果表明:中国平板玻璃行业以天然气/煤气为主要燃料,平均单位产品能源消耗量为13.2kg标煤/重量箱,山西、内蒙古等省份较高;37%和42%的生产线分别安装了脱硫、脱硝设施,技术以烟气循环流化床、双碱法、SCR为主;SO_2排放量先升后降,2014年达到16.84万t,2015年下降至13.67万t,湖北、浙江、河北、广东排放量较大;NO_x排放量持续下降,从2013年的37.47万t下降至2015年的28.38万t,河北、湖北、山东、广东排放量较大;SO_2排放强度西南部地区高于其他地区,且有上升趋势,其他地区SO_2排放强度整体下降;NO_x排放强度中西部地区较高.应加强高能耗、高排放以及高强度地区的污染控制力度.

Based on the data of the basic production-line information,activity level and pollutant control technologies of the flat-glass enterprises of27provinces in2013~2015,the calculation methods and emission inventories of SO2and NOx emissions for the main atmospheric pollutants of the flat-glass industry are established with the analysis of the production,the energy consumption,the energy structure,pollutant control technology,the emission characteristics and spatial difference.Monte Carlo method is used for the uncertainty analysis of the inventories.The results show that Chinese flat glass industry uses natural gas/coal gas as the main energy,the average energy consumption per unit of product is13.2kg tce/weight box,Shanxi and Inner Mongolia and other provinces are higher;37%and42%of the flat-glass production line is installed with denitrification facilities and desulfurization facilities,the main technologies are flue gas circulating fluidized bed,Dual-Alkali Method and SCR.SO2emissions rose first and then dropped,reached168thousand tons in2014,and dropped to136thousand tons in2015,the emission of Hubei,Zhejiang,Hebei and Guangdong were relatively large.NOx emissions decreased continuously,from374thousand tons in2013to284thousand tons in2015,the emission of Hebei,Hubei,Shandong and Guangdong were relatively large.The SO2emission intensity in the southwest region is higher than other areas,and it has a rising trend,and the SO2emission intensity in other areas decreased as a whole.The NOx emission intensity in the southwest region is higher than other areas.Efforts should be made to strengthen pollutant control in areas with high energy consumption,high emission and high intensity.