【摘要】 机械化学水解法,属于植物原料浓酸水解范畴中的一种新型水解方法,又称为浓酸小酸比水解法。本研究采用振动磨为主水解设备,以木屑为原料;先后经过基础试验及中间试验两个阶段,完成了这一方法工业化的系统研究。 本报告只涉及与主水解有关的研究部分。 研究结果表明:原料(木屑)的平均得糖率取40％时(占干基),每吨水解糖的主水解电耗为1450～1600度,采用经过预水解的纤维木素作原料,得糖率可达50％(占木屑干基)以上,其电耗可降为1100～1200度。如建厂按年处理5000吨木屑的生产能力计算,水解糖的成本约为每吨300～330元;采用预水解方案时,糖价尚可下降20％左右。这种水解糖的价格与工业淀粉糖相比是具有竞争力的。 以本研究为基础,北京市光华木材厂,曾于七十年代中期建设了以生产药用酵母为产品的生产车间,并进行过几年生产。更多还原

【Abstract】 A mechano-chemical hydrolysis, derived from Riga process, which is also known as strong sulfuric acid and low acid ratio hydrolysis, was thoroughly investigated for its commercialization. Vibration ball mill was used as a main hydrolyzer, and sawdust as raw material. On the basis of laboratory and pilot experiments, this method was tried in commercial practice.The present paper only deals with the part of work on main hydrolysis. It has shown that when the average yield of sugar (based on dry wood) after hydrolysis is 40%, the power consumption for main-hydrolysis is 1450-1600 kwhr per ton of sugar, and the yield of total sugar may be increased to over 50% when sawdust is prehydrolyzed and the ligno-cellulose is used for main hydrolysis. In that case, the power consumption may be reduced to 1100-1200 kwhr per ton of sugar. It was estimated that in a plant with production capacity of 5000 tons of sawdust a year, the costs of the sugar will be 300-330 yuan/ton and this could be further reduced by 20% if prehydrolysis is used. This price could compete with that of commercial starch sugar in certain circumstances.In the middle of 70s, a workshop producing medicinal yeast based on this method was set up and run for a certain period of time in Beijing Guang Hua Wood Working Factory.更多还原