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bce ›› 2015, Vol. 49 ›› Issue (1): 1-6.doi: 10.3969/j.issn.1673-5854.2015.01.001

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Characteristics of Sawdust and Coal Slow Co-pyrolysis Products

SUN Yun-juan1,2, JIANG Jian-chun1, XU Yu1,2, YING Hao1,2, DAI Wei-di1,2   

  1. 1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab.for Biomass Chemical Utilization;Key and Open Lab.of Forest Chemical Engineering, SFA;Key Lab.of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China;
    2. Research Institude of Forestry New Technology, CAF, Beijing 100091, China
  • Received:2014-08-20 Online:2015-01-30 Published:2015-02-10

Abstract: By using TG-FTIR method,the co-pyrolysis products of sawdust and coal were analyzed.It was found that co-pyrolysis products yield was not simple accumulation of mono-pyrolysis,but the result of inhibition or acceleration effect of synergistic reaction.With the increase of coal rank,the CO and CH4 products yields increased,CO2 product yield decreased,and liquid and solid products yields increased.The mixture ratio had less influence on the co-pyrolysis products.With the mixture ratio of 5:5,the CO and CH4 yields were the minimum.When the co-pyrolysis temperature was less than 500 ℃,CO2 yield was the maximum in mixture ratio of 5:5.While the co-pyrolysis temperature was over 500 ℃,CO2 yields decreased with the increase of mixture ration.Solid product yields of sawdust and lignite co-pyrolysis gradually increased as the sawdust ratio in blending raw material promoted.But solid product yields of sawdust and anthracite co-pyrolysis were going in the opposite direction.

Key words: sawdust, coal, coal rank, synergistic effect, co-pyrolysis

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