生物质在超临界水中热解行为的初步研究

Straw pyrolysis in supercritical water was studied using a high-pressure batch autoclave. The effects of temperature, pressure and reaction time on the distribution of pyrolysis products were examined. Results indicate that the yield of gas and oil increased with increasing temperature at first, and then oil yield decreased. The highest oil yield 28.57% was reached from 380 ℃ to 410 ℃. The yield of gas and oil increased with increasing pressure while the yield of residue decreased notably. When pressure is higher than 31.5 MPa, the yield of oil did not vary with pressure. The yield of gas increased with reaction time, and the yield of oil increased at first, and then decreased.