| Environmental & Energy Engineering |
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| Fluidized-bed pyrolysis of waste bamboo |
| XIAO Gang, NI Ming-jiang, HUANG He, CHI Yong, XIAO Rui, ZHONG Zhao-ping, CEN Ke-fa |
| Key Lab. on Clean Coal Power Generation and Combustion Technology of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China; State Key Lab. of Clean Energy Utilization, College of Mechanical and Energy Engineering, Zhejiang University, Hangzhou 310027, China; College of Life Science and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing 210009, China |
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Abstract Bamboo was a popular material substituting for wood, especially for one-off commodity in China. In order to recover energy and materials from waste bamboo, the basic characteristics of bamboo pyrolysis were studied by a thermogravimetric analyzer. It implied that the reaction began at 190~210 °C, and the percentage of solid product deceased from about 25% to 17% when temperature ranged from 400 °C to 700 °C. A lab-scale fluidized-bed furnace was setup to research the detailed properties of gaseous, liquid and solid products respectively. When temperature increased from 400 °C to 700 °C, the mass percent of solid product decreased from 27% to 17% approximately, while that of syngas rose up from 19% to 35%. When temperature was about 500°C, the percentage of tar reached the top, about 31%. The mass balance of these experiments was about 93%~95%. It indicated that three reactions involved in the process: pyrolysis of exterior bamboo, pyrolysis of interior bamboo and secondary pyrolysis of heavy tar.
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Received: 10 February 2007
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