Volume 36 Issue 5
Oct.  2008
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ZHANG Jiu-ling, GUO Li-wen, WANG Yue-hong, LIN Jian-guang, YANG Xiao-wei. CO adsorptive characteristics of macerals in low rank coals[J]. COAL GEOLOGY & EXPLORATION, 2008, 38(5): 1-5.
Citation: ZHANG Jiu-ling, GUO Li-wen, WANG Yue-hong, LIN Jian-guang, YANG Xiao-wei. CO adsorptive characteristics of macerals in low rank coals[J]. COAL GEOLOGY & EXPLORATION, 2008, 38(5): 1-5.
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CO adsorptive characteristics of macerals in low rank coals

  • 1. School of Resource and Safety Engineering, China University of Mining and Technology, Beijing 100083, China;

  • 2. School of Resource and Environment, Hebei Polytechnic University, Tangshan 063009, China;

  • 3. MCC Capital Engineering and Research Incorporation Limited, Beijing 100176, China;

  • 4. Xingtai Risun Coal and Chemical Co. Ltd, Xingtai 054001, China

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  • Received Date: January 17, 2008
  • Available Online: March 10, 2023
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  • The study of the CO adsorptive capability of every maceral of low rank coal is highly significant for choosing the index gas for estimating spontaneous combustion of low rank coal.Under different temperature and pressure,the isothermal adsorption tests of pure inertinite and vitrinite are carried out at 30 ℃,40 ℃,50 ℃,55 ℃,60 ℃,65 ℃ respectively,after analyzing the proximate,element and maceral of coal samples.The results show that the adsorption isotherm of CO can be described by Langmuir equation at low temperature(T≤50 ℃);and the relationship is linear between the coal adsorption quantity of CO and the pressure at high temperature(T>50 ℃),it can be described by Henry equation,which increases with pressure,however,the temperature’s effect is so complex that the mechanism need to study further.At the same time,the fusinit,oxygen-function groups and negative func-tional groups are high popularly in low rank coal samples,especially,the content of hydroxide(—OH) has great influence on CO adsorption in that the inertinite has stronger effect than vitrinite on adsorptive capability of low rank coal samples.
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