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水泥工业是中国制造业中温室气体CO2的主要排放源,因此,根据水泥生产的基本原理和工艺特点,建立了CO2排放的数学模型并确定排放强度,计算了2001—2010年中国水泥工业CO2的排放量,分析了影响CO2排放量的主要因素及其发展趋势,并提出水泥工业CO2减排对策.结果表明,中国水泥工业CO2排放总量逐年增长,与水泥产量和单位产品原料、燃料消耗定额呈线性关系;在CO2排放总量中,原料煅烧和燃料燃烧阶段的排放量分别占49%和51%;“十一五”期间单位水泥产品CO2排放强度由0.69t.t-1下降到0.65t.t-1.万元GDPCO2排放量呈下降趋势,2008年达到最低值为0.3054t,平均每年万元GDPCO2排放量下降10.69%,说明水泥工业10年间实施节能降耗、资源循环利用、提高经济效益等措施对于减少CO2排放具有明显效果.
Cement industry is the main source of greenhouse gas CO2 emissions in China’s manufacturing industry. Therefore, according to the basic principle and process characteristics of cement production, the mathematical model of CO2 emissions and the emission intensity are established, and the CO2 emissions of China’s cement industry from 2001 to 2010 Emissions and analyzed the main factors that affect CO2 emissions and their development trends and put forward countermeasures for CO2 emission reduction in the cement industry.The results show that the total amount of CO2 emissions in China’s cement industry is increasing year by year and is in line with the cement output and raw material consumption per unit of product, In the total amount of CO2 emissions, the emissions of raw materials calcination and fuel combustion phase accounted for 49% and 51%, respectively; During the “Eleventh Five-Year” period, the CO2 emission intensity per unit of cement decreased from 0.69tt-1 to 0.65 TDP emissions of 10,000 yuan a downward trend in 2008 to reach the minimum value of 0.3054t, an average of 10,000 yuan per year GDPCO2 emissions decreased 10.69%, indicating that the cement industry in 10 years to implement energy saving, recycling of resources and improve economic efficiency Measures such as reducing CO2 emissions have obvious effects.