摘要
在间歇高压釜实验装置上，采用均匀设计法优化了木材亚／超临界乙醇－水萃取过程参数。研究结果表明，当混合溶剂中水的质量分数为６０％ ，温度为２９０℃和溶木比为１５∶１（此时系统压力为７．８ ＭＰａ）时，能获得最高的木材转化率和萃取物产率，大约９０％ 的木材变成了可溶组分，这为木材液化开辟了新的技术途径。
In a batch autoclave experimental apparatus, the process parameters of sub and supercritical extraction of wood with ethanol water were optimized using uniform design technique. The results indicated that the highest wood conversion and extract yield could be obtained when the mass fraction of water in mixed solvent was 60%, temperature 290℃ and the ratio of solvent to wood 15∶1 (the system pressure at this time was 7 8 MPa), about 90% wood was converted into soluble components. This technique opened a novel way to wood liquefaction.
出处
《林产化工通讯》
CAS
北大核心
2000年第1期3-6,共4页
Journal of Chemical Industry of Forest Products
基金
国家自然科学基金!资助项目(39670591)。
关键词
木材
亚临界萃取
超临界萃取
均匀设计
液化
wood
subcritical extraction
supercritical extraction
uniform design
