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Impact of Operation Factors on Biomass Pyrolysis and the Characteristics of Bio-Char(PDF)

南京师范大学学报(工程技术版)[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2011年04期
Page:
29-33
Research Field:
Publishing date:

Info

Title:
Impact of Operation Factors on Biomass Pyrolysis and the Characteristics of Bio-Char
Author(s):
Zhou LeiyuWang MengWu HaoZhang HairuYang Hongmin
School of Energy and Mechanical Engineering,Nanjing Normal University,Nanjing 210042,China
Keywords:
biomasspyrolysisoperation factorsbio-char
PACS:
X712
DOI:
-
Abstract:
The experiments of the rice husk pyrolysis were performed in a fixed-bed reactor to produce bio-oil. The effects of the different operation factors such as pyrolysis temperature,sweeping gas ( N2 ) flow rates and heating rates on the yields of three products and the characteristics of bio-char were investigated. The maximum bio-oil yield of 49. 91% was obtained at 550℃ pyrolysis temperature with a heating rate of 25℃ /min and nitrogen flow rate of 150 mL/min. As the heating rate increased,it favored the yields of liquid product,yet the bio-char yields decreased. Thermogravimetric analysis ( TGA) was introduced to study the thermal decomposition of the feedstock. Crystals and morphology of bio-char with different pyrolysis temperatures were characterized by X-ray diffraction ( XRD) and scanning electron microscopy ( SEM) analysis. The results showed that pyrolysis temperatures played an important role on the surface morphology and crystal phase of bio-char and the prominent porosity with the bio-char which was generated under 550℃ pyrolysis temperature was observed.

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Last Update: 2013-03-21