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Energy Conversion and Management 49 (2008) 2078–2082

Contents lists available at ScienceDirect

Energy Conversion and Management journal homepage: www.elsevier.com/locate/enconman

Low-temperature gasification of waste tire in a fluidized bed q
Gang Xiao a,b,*, Ming-Jiang Ni b, Yong Chi b, Ke-Fa Cen b a b

Key Laboratory of Clean Coal Power Generation and Combustion Technology of MOE, Thermo-Energy Engineering Research Institute, Southeast University, Nanjing 210096, China Institute for Thermal Power Engineering, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China

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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 °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 °C, characteristics of carbon black is similar. When temperature is over 700 °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 650– 700 °C and ER is 0.2–0.4. Under this condition, LHV and yield of syngas are about 4000–9000 kJ/Nm3 and 1.8–3.7 Nm3/kg, respectively; surface area and yield of carbon black lie in range of 20–30 m3/g and 550–650 g/kg, respectively. The carbon balance of these experiments achieves 85–95% when temperature is over 600 °C. Ó 2008 Elsevier Ltd. All rights reserved.

Article history: Received 14 September 2006 Received in revised form 2 July 2007 Accepted 25 February 2008 Available online 8 April 2008 Keywords: Waste tire Gasification Fluidized bed Syngas Carbon black

1. Introduction With