JOURNAL OF NATURAL RESOURCES ›› 2016, Vol. 31 ›› Issue (8): 1378-1387.doi: 10.11849/zrzyxb.20150951

• Resource Economy • Previous Articles     Next Articles

Research on CO2 Emission Factors of Cement Production by the Measurement of Carbonate

WEI Jun-xiao1, 2, GENG Yuan-bo1, ZHAO Jian-an1, 3, WANG Song1, 3, MU Yue1, 3   

  1. 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2. China University of Geosciences (Beijing), Beijing 100083, China;
    3. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2015-09-01 Revised:2016-05-06 Online:2016-08-20 Published:2016-08-20
  • Supported by:
    Strategic Priority Research Program of the Chinese Academy of Sciences, No.XDA05010400

Abstract: In order to optimize the calculation of cement CO2 emission factors, we analyzed and calculated the clinker and cement CO2 emission factors based on raw material carbonate method and the classification of emissions. The emissions are divided into the process-related emissions and the combustion-related emissions of NSP kilns, and the inorganic carbon emissions and the organic carbon emissions of shaft kilns. Based on the sampled test data, the process-related emission factors of NSP kilns are 520.00 kg CO2/tcl, the combustion-related emission factors are about 288.06 kg CO2/tcl, and the clinker CO2 emission factors are 808.06 kg CO2/tcl. For the shaft kiln, the inorganic carbon emission factors are 504.18 kg CO2/tcl, organic carbon emission factors are 343.67 kg CO2/tcl, and clinker carbon emission factors are 847.85 kg CO2/tcl. Due to the popularity of NSP kilns and cogeneration technology, and the decline of clinker-to-cement ratio, China’s cement CO2 emission factor has decreased year by year. From 2001 to 2012, China’s cement CO2 emission factors decreased from 767.13 kg CO2/tce to 550.80 kg CO2/tce, respectively. Process-related emissions, combustion-related emissions and electricity-related emissions account for 58.57%, 29.79% and 11.64% approximately in the cement CO2 emission.

Key words: cement CO2 emission factors, clinker CO2 emission factors, combustion-related emissions, inorganic carbon emissions, process-related emissions

CLC Number: 

  • TQ172.1