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Estimation of CO_2 emissions from China's cement production: Methodologies and uncertainties

机译：中国水泥生产中CO_2排放量估算：方法论和不确定性

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摘要

In 2010, China's cement output was 1.9 Gt, which accounted for 56% of world cement production. Total carbon dioxide (CO_2) emissions from Chinese cement production could therefore exceed 1.2 Gt. The magnitude of emissions from this single industrial sector in one country underscores the need to understand the uncertainty of current estimates of cement emissions in China. This paper compares several methodologies for calculating CO_2 emissions from cement production, including the three main components of emissions: direct emissions from the calcination process for clinker production, direct emissions from fossil fuel combustion and indirect emissions from electricity consumption. This paper examines in detail the differences between common methodologies for each emission component, and considers their effect on total emissions. We then evaluate the overall level of uncertainty implied by the differences among methodologies according to recommendations of the Joint Committee for Guides in Metrology. We find a relative uncertainty in China's cement-related emissions in the range of 10 to 18%. This result highlights the importance of understanding and refining methods of estimating emissions in this important industrial sector.
机译：2010年，中国水泥产量为1.9 Gt，占世界水泥产量的56％。因此，中国水泥生产中的二氧化碳排放总量可能超过1.2吨。一个国家中单个工业部门的排放量突显了需要了解中国目前水泥排放量估算的不确定性。本文比较了几种用于计算水泥生产的CO_2排放的方法，包括排放的三个主要组成部分：熟料生产的煅烧过程中的直接排放，化石燃料燃烧的直接排放和电力消耗的间接排放。本文详细研究了每种排放成分的通用方法之间的差异，并考虑了它们对总排放量的影响。然后，我们根据计量学联合指南委员会的建议，评估由方法之间的差异所隐含的不确定性的总体水平。我们发现中国水泥相关排放的相对不确定性在10％至18％的范围内。这一结果凸显了在这一重要工业部门中了解和改进估算排放量的方法的重要性。

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  • 来源
    《Energy Policy》 |2013年第6期|172-181|共10页
  • 作者

    Jing Ke; Michael McNeil; Lynn Price; Nina Zheng Khanna; Nan Zhou;

  • 作者单位

    Energy Analysis and Environmental Impacts Department, Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 90R2002, Berkeley, CA 94720, USA;

    Energy Analysis and Environmental Impacts Department, Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 90R2002, Berkeley, CA 94720, USA;

    Energy Analysis and Environmental Impacts Department, Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 90R2002, Berkeley, CA 94720, USA;

    Energy Analysis and Environmental Impacts Department, Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 90R2002, Berkeley, CA 94720, USA;

    Energy Analysis and Environmental Impacts Department, Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 90R2002, Berkeley, CA 94720, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    cement industry; CO_2 emissions; uncertainty;

    机译：水泥工业二氧化碳排放量;不确定;

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