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Low-temperature gasification of waste tire in a fluidized bed

Author:
Xiao, Gang  Ni, Ming-Jiang  Chi, Yong  Cen, Ke-Fa  


Journal:
ENERGY CONVERSION AND MANAGEMENT


Issue Date:
2008


Abstract(summary):

In order to recovery energy and materials from waste tire efficiently, low-temperature gasification is proposed. Experiments are carried out in a lab-scale fluidized bed at 400-800 degrees C when equivalence ratio (ER) is 0.2-0.6. Low heat value (LHV) of syngas increases with increasing temperature or decreasing ER, and the yield is in proportion to ER linearly. The yield of carbon black decreases with increasing temperature or ER lightly. When temperature is over 600 degrees C, characteristics of carbon black is similar. When temperature is over 700 degrees C, LHV of syngas rises up lightly with increasing temperature, which indicates that it hardly facilitates gasification any more. It is suitable for tire gasification when temperature is 650700 degrees C and ER is 0.2-0.4. Under this condition, LHV and yield of syngas are about 4000-9000 kJ/Nm(3) and 1.8-3.7 Nm(3) /kg, respectively; surface area and yield of carbon black lie in range of 20-30 m(3)/g and 550-650 g/kg, respectively. The carbon balance of these experiments achieves 85-95% when temperature is over 600 degrees C. (c) 2008 Elsevier Ltd. All rights reserved.


Page:
2078---2082


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