Nitrogen in Chinese coals |
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| Authors: | Daishe Wu Jie Lei Baoshan Zheng Xiuyi Tang Mingshi Wang Jun Hu Shehong Li Binbin Wang R B Finkelman |
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| Institution: | (1) CAS Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, People’s Republic of China;(2) State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi’an, 710075, Shaanxi, People’s Republic of China |
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| Abstract: | Three hundred and six coal samples were taken from main coal mines of twenty-six provinces, autonomous regions, and municipalities
in China, according to the resource distribution and coal-forming periods as well as the coal ranks and coal yields. Nitrogen
was determined by using the Kjeldahl method at U.S. Geological Survey (USGS), which exhibit a normal frequency distribution.
The nitrogen contents of over 90% Chinese coal vary from 0.52% to 1.41% and the average nitrogen content is recommended to
be 0.98%. Nitrogen in coal exists primarily in organic form. There is a slight positive relationship between nitrogen content
and coal ranking. |
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| Keywords: | coal nitrogen distribution |
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