Abstract:

We perform pyrolysis experiments on a fixed bed reactor at 400, 450, 500 and 550 ℃ with corn straw, wheat straw and cotton straw as raw materials. We then obtain three biomassfastpyrolysis biooils. 500 ℃ is the optimal temperature for obtaining the highest average biooil yield. We further employ Gas ChromatographMass Spectrometercomputer (GC-MS）to determine their main chemical components and mass content at 500 ℃. Experimental results show that the kind of biomass materials has significant impact on biooil chemical components and contents. Biooil from every raw material has its own unique chemical compounds whose contents are also different. However, major components are approximately identical. Ketones are rich in biooil from corn stalk, and acids next. While acid is rich in biooil from wheat straw and cotton stalk, and ketones next.

Key words: biomass, fixedreactor, bio-oil, chemical component, pyrolysis