Energy consumption and CO2 emissions in China's cement industry: A perspective from LMDI decomposition analysis
Energy consumption and CO2 emissions in China's cement industry: A perspective from LMDI decomposition analysis
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DOI：
10.1016/j.enpol.2012.08.038
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发表时间：
2012-11-01
期刊：
影响因子：
9
通讯作者：
Fan, Ying
中科院分区：
文献类型：
--
作者：
Xu, Jin-Hua;Fleiter, Tobias;Fan, Ying
采用对数平均Divisia指数（LMDI）方法分析了1990-2009年中国水泥行业能源消费和CO2排放的变化及其驱动因素。它以熟料生产的典型生产工艺为基础，区分了四个决定因素：水泥产量、熟料份额、工艺结构和每种窑型的比能耗。结果表明，水泥产量的增长是推动能源消费上升的最重要因素，熟料份额下降，结构转变主要推动能源消费下降（与CO2排放量相似）。这些效率的提高得益于一系列政策，这些政策正在使整个水泥行业向国际最佳做法转变，包括关闭许多老厂和提高水泥厂的效率标准。然而，效率的提高无法弥补经济增长带来的水泥产量的大幅增加，特别是在基础设施和建筑部门。最后，情景分析表明，采用最佳可行技术将导致额外的节能潜力为26%，二氧化碳减排潜力为33%，与2009年相比。(C)2012爱思唯尔有限公司保留所有权利。
We analyze the change of energy consumption and CO2 emissions in China's cement industry and its driving factors over the period 1990-2009 by applying a log-mean Divisia index (LMDI) method. It is based on the typical production process for clinker manufacturing and differentiates among four determining factors: cement output, clinker share, process structure and specific energy consumption per kiln type. The results show that the growth of cement output is the most important factor driving energy consumption up, while clinker share decline, structural shifts mainly drive energy consumption down (similar for CO2 emissions). These efficiency improvements result from a number of policies which are transforming the entire cement industry towards international best practice including shutting down many older plants and raising the efficiency standards of cement plants. Still, the efficiency gains cannot compensate for the huge increase in cement production resulting from economic growth particularly in the infrastructure and construction sectors. Finally, scenario analysis shows that applying best available technology wound result in an additional energy saving potential of 26% and a CO2 mitigation potential of 33% compared to 2009. (C) 2012 Elsevier Ltd. All rights reserved.