中国水泥工业CO2产生机理及减排途径研究

根据水泥生产的基本原理和工艺特点,推导出煤燃烧和石灰质原料煅烧时CO2排放因子分别为2.38 t·t-1和0.527 t·t-1;采用水泥工业CO2排放数学模型计算2001-2008年中国水泥工业CO2排放量,并分析了不同的生产技术水平和产品品种结构对CO2,排放量的影响.结果表明:中国水泥工业CO2排放量与单位产品的...

CO2 emissions from the Chinese cement industry and methods to reduce them

According to the principles and characteristics of cement production,the emission factors of carbon dioxide were calculated to be 2.38 t·t^-1 for burning coal and and 0.527 t·t^-1 for burning lime materials.Amathematical model of CO₂ emission in the cement industry was used to deduce the CO₂ emissions load of the Chinese cement industry from 2001 to 2008.The results indicated that there is a linear relationship between the Chinese industrial emission of CO₂ and the energy and resource consumption per unit product.CO₂ emitted in the fuel burning and cement producing process were respectively responsible for 46% and 50% of total CO₂ emissions by the cement industry.Indirect power loss occupied only 4% of total CO₂ emissions.When the new suspension preheater(NSP) cement technique was used,CO₂ emission decreased by 34% compared with that produced by the traditional technique.The CO₂ emission of cement and admixture production decreased by 35% compared with Portland cement production.Compared with 2007,total Chinese cement outputs increased 2% in 2008,but there was only a 0.23% increase in CO₂ emissions.The results indicate that techniques for energy saving and resource recycling have great influence on the reduction of CO₂ emissions.