| 摘要 |
The invention belongs to the field of production technologies of non-fossil biofuels, more specifically production methods of bioethanol, and it is applicable in biofuel production process from lignocellulosic biomass. In nitrogen explosion method for disrupting cell structure, dry milled biomass is mixed with water to achieve creamy consistency (the biomass to water ratio from 1:5 to 1:15), pressure is increased using nitrogen gas (N2) to a range of 10 to 60 bars, temperature in the pressure vessel is raised to the range of 125 to 190 degrees Celsius and is kept thus for the incubation period of 10 to 120 minutes. The mixture is then cooled to the temperature range of 25 to 90 degrees Celsius, while the total time of biomass heating, incubation and cooling is in the range of 1 to 4 hours. After reaching the final temperature, the pressure is suddenly released to achieve explosive decompression and the pretreated biomass is used in further processing. |
