PROPERTY OF PYROLYTIC PRODUCTS FROM RICE STRAW AND LIGNIN
A pyrolysis tube furnace system was designed to assess the impacts of different components on pyrolysis characteristics under nitrogen atmosphere, and pyrolysis temperature (400～900oC) as an important impact factor acts on the sample pyrolyzing. The obtained pyrolysate was classified into three groups, i.e. the condensed liquid product (bio-oil), solid product (char), and light gas. Gas chromatograph (GC) was used to analyze ingredient of light gas released from sample pyrolysis, and gas chromatography/mass spectrometer (GC/MS) was performed to analyze bio-tar. The results revealed that the volatile from rice straw pyrolysis exceeded that of lignin at the temperature below 700oC as a result of the higher char generated from lignin pyrolysis. With an increase in pyrolysis temperature, the yield of char decreased and light gas persistently increased, and yield of bio-tar had the maximal temperature of 500oC. In gas product, H2, CO, CO2 and some light hydrocarbon (CH4, C2H4 and C2H6) can be found, and the content of H2, CO was abounding. Bio-oil derived from lignin was relatively simple and comprised aromatic hydrocarbons, chain hydrocarbon, monoaromatic compounds and little ketones, and only phenol compounds held 50～60％, easily to get high-value chemicals and high quality biofuels.
rice straw lignin pyrolysis products
Lou Rui Wu Shubin Lv Gaojin
State Key Laboratory of Pulp and Paper Engineering,South China University of Technology, Guangzhou,510640, China
国际会议
广州
英文
405-408
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）