分子团裂化重组对生物质制油的影响机理

The project was mainly focused on the pyrolysis mechanism of cellulose, which is the most component of biomass. Experiment research was carried out on the effect of temperature, heating rate, gas resident time and metal salt on production distribution. By detecting the components in bio-oil with GC-MS, the restraining effect of operation parameters on molecular group was studied in detail. By focusing on the evolution behaviours of levoglucosan, hydroxyacetaldehyde and acetol, the mechanism of molecule group secondary cracking and recombining was discussed in converse view. Combined with the study of cellulose pyrolysis kinetics and other experimental researches, the effect of molecular group on bio-oil production and quality was researched. A demonstration unit with the feed rate of 20Kg/h was set up, which will be beneficial to the industrialization of biomass pyrolysis technology.

本研究针对生物质热裂解制取生物油技术中由于大分子团中间产物二次裂化导致的生物油产率低和品质不稳定的主要问题，提出通过控制热解温度、升温速率、滞留期和冷却速率等主要过程参数，研究分子团裂化重组机理和提高生物油产率与品质的措施，为高效生物质制油技术装置设计开发和运行提供理论依据，使该技术和生物油产品尽早投入巨大的应用市场。