中国水泥工业节能减排效果分析及对策研究

Analysis and Countermeasures on Effectiveness of Energy Saving and Emission Reduction for Chinese Cement Industry

根据水泥工业大气污染物排放的数学模型;测算2005年-2011年中国水泥工业二氧化碳(CO2)、氮氧化物(NO2)、二氧化硫(SO2)、颗粒物(PM)和氟化物(F)等污染物排放量,分析节能减排的效果并提出解决问题的对策。结果表明:水泥工业CO2排放量逐年增长,并且与水泥产量和单位产品综合能耗呈线性关系;原料煅烧和能源利用过程CO2排放量分别占56%和44%;单位水泥产品CO2排放强度由0.68 t·t-1下降到0.58 t·t-1,相当于每年节约标准煤682×104t、减少CO2排放共计1.03×108t。NO2排放量分别是SO2、PM、F的4、7、160倍。发展新型干法技术、建设烟气脱硝装置、协同处置固体废物是水泥工业未来节能减排的发展方向。

Based on a mathematical model, this paper calculated the air pollutant emissions in cement industry from 2005 to 2011 with the emission factors and production consumption. The results indicated that the carbon dioxide （ CO2 ） emissions increase rapidly every year in China, with a linear relationship between CO2 emissions and the cement outputs and the comprehensive energy and resource consumption per unit cement product. The raw material burning and energy consumption process accounts for about 56% and 44% in total CO2 emission of cement industry, respectively. CO2 emission decreases from 0. 68 t · t-1 in the 2005 to O. 58 t· t-1 in the 2011, Corresponding to saving standard coal 682 × 10^4t every year, 1.03× 10^8t in total CO2 emission reduction. The nitrogen oxide（ NO2 ） emissions is 4,7 and 160 times as high as sulfur dioxide（ SO2 ）, particulate matter（PM） and fluoride （F） emissions. The way of saving energy and reduce emissions is to develop new dry process technology, system of reduction fume denitration and synergistic treatment of solid waste in cement industry.