| 内容提要: |
The effect of in-situ hydrogenation on the liquefaction of sewage sludge using different organic solvents was studied in this research. The highest bio-oils yields were 42.3% in ethanol at 360 oC, 43.1% in acetone at 360 oC and 26.3% in methanol at 280 oC. Esters were the main components of in ethanol and methanol, which comprised 43.55% ethyl esters and 61.05% methyl esters, respectively. N-components originating from protein constituted the main heterocyclic compounds and amides. The oxygen content decreased as the temperatures increased, the highest HHV for ethanol, acetone and methanol at 360 oC were (29.08, 29.53 and 27.95) MJ/kg, respectively. The DSC-TG-DTG results indicated that the bio-oil obtained from methanol was more stable than the others, and the main small molecule components decomposed before the temperature reached 373.5 oC. The highest weight loss rates were (4.31, 5.07, and 5.12) %/min at (238.8, 233.6, and 260.5) oC, respectively. |