点击次数：

论文类型：会议论文

发表时间：2017-01-01

收录刊物：Scopus、CPCI-S

卷号：1864

关键字：Pine sawdust; pressurized pyrolysis; bio-oil; bio-char

摘要：In this work, the pressurized pyrolysis of pine sawdust was performed with a self-made pressurized pyrolysis reactor to investigatethe influence of pyrolysis pressure in the range of 0-5 MPa on products distribution and characteristics. The combustion feature and microstructure of bio-char had analyzed by thermogravimetric (TG) and scanning electron microscopy (SEM), respectively. Elemental analyzer and Fourier transform infrared spectroscopy (FTIR) were used to confirm the identities of bio-oil. The results indicated the pressure had a notable impact on the biomass pyrolysis, which promoted the secondary cracking of bio-oil to produce more gaseous products and bio-char. The minimum bio-oil yield of 20.24% was obtained at the pressure of 5 MPa. Furthermore, the pressure improved the products characteristics. The increasing of pressure was favour to the deoxygenation and dehydrogenation reactions of bio-oil, which led to the increase of CH4, H2 and CO2 in gas. At the same time, under the influence of pressure, the surface structure and compactedness of the bio-char were obviously improved.