【作者】 庄新姝； 王树荣； 骆仲泱； 岑可法；

【Author】 ZHUANG Xin-shu, WANG Shu-rong, LUO Zhong-yang, CEN Ke-fa (State Key Laboratory of Clear Energy Utilization, Zhejiang University, Hangzhou 310027, China)

【机构】 浙江大学能源清洁利用国家重点试验室；

【摘要】 通过对当今世界面临的液体燃料危机形势和燃料乙醇的应用情况分析,指出乙醇汽油燃料是当前减少石油消耗非常有效的方法,长远看来以生物质为原料生产燃料乙醇势在必行,有着广阔的发展前景。进而对生物质生产燃料乙醇必经的水解工艺进行了较为详细的综述,指出生物质二步超低酸水解非常有发展前途;结合浙江大学热能所在生物质热裂解技术领域的研究成果,提出了生物质稀酸水解与热裂解联合利用的构想:利用生物质热裂解产生的有机酸做为水解催化剂,水解生物质和热裂解的主要产物左旋葡聚糖,水解液通过发酵生产燃料乙醇,富含木质素的生物质水解残渣通过热裂解生产芳香族化工产品和活性炭,活性炭用做水解液发酵前的净化剂,从而实现生物质的高效联合利用,为生物质的大规模综合利用打下基础。最后在自行设计的生物质水解试验台上,以白松、速生杨和玉米秸秆为原料进行了两步超低酸水解的试验研究,分别得到了39.29%、42.83%、23.82%的还原糖转化率和41.78%、57.84%和53.44%的原料转化率,针对转化率最高的速生杨做了进一步的分步水解和第二步不加酸水解的对比研究,发现分步水解转化率高于两步连续水解,并对残渣做了分析。更多还原

【Abstract】 Through the analysis of the critical situation of liquid fuel and the application of gasohol, it is pointed out that the gasohol utilization is the most direct and efficient way to lessen the oil consumption,and it is very imperative to produce fuel ethanol by biomass. Furthermore, biomass hydrolysis process for fuel ethanol producing was summarized. Combined with the research results of biomass pyrolysis of Zhejiang university, the co-utilization of biomass dilute acid hydrolysis and pyrolysis was discussed: Biomass materials and levoglucan produced by pyrolysis were hydrolyzed with one of the products of pyrolysis - acetic acid , then fermenting the hydrolyzate to fuel ethanol, the hydrolysis residues which are rich of lignin were pyrolyzed to produce aromatic chemicals and active carbon, the active carbon used as the purificant of the fermenting liquid. The co-utilization would lay the foundation of biomass comprehensive utilization to solve the energy problem. Simultaneously with the facility designed ourselves, pine, poplar and corn straw were hydrolyzed by two step extremely low acid hydrolysis. The reducing sugar conversion ratio is 39.29%, 42.83% and 23.82% and the material conversion ratio is 41.78%, 57.84% and 53.44% respectively. Finally the hydrolysis residues were analyzed.更多还原