大豆豆渣苯酚液化物制备工艺的研究

Affecting Factors and Optimum Processing of Soybean Dregs Liquefaction in Phenol

目前液化已成为生物质原料利用的重要途径之一,为了提高大豆豆渣的附加值,采用单因素试验和正交试验研究了大豆豆渣的苯酚液化工艺,液化产物欲用于制备木材胶粘剂。结果表明:在硫酸催化剂作用下,大豆豆渣可以很好地在苯酚中液化。液化过程的4个影响因素中,催化剂对液化效果的影响最显著,其次分别为液比、液化时间和液化温度。在选择的实验参数范围内,液比和催化剂用量越大时,豆渣的液化残渣率越小,即液化效率越高。大豆豆渣苯酚液化的优化工艺为:反应温度150℃、催化剂用量10%、液化时间1.5 h、苯酚与豆渣质量比(液比)为4;在此工艺条件下,液化效率可以达到97.3%。

Recently liquefaction has been an important way of using biomass raw material. In order to enhance the additional value of soybean dregs,the single factor experiment and the orthogonal test has been used to study the soybean dregs phenol liquefaction craft ,liquefaction production is prepared for wood adhesive. Under the effect of sulfuric acid catalytic, the soybean dregs could be liquefied well in the phenol. Among the four influncing factors of soybean dregs phenol liquefaction, catalyst had the most remarkable impact,then were the fluid ratio,the liquefaction time and the temperature. Within the scope of the experiment parameter that choiced, when the fluid ratio and the catalyst amount used were higher, the residual rate is lower, in other words the liquefied efficiency is higher. The optimal craft of soybean dregs phenol liquefaction was reacting at 150℃ for 1.5 h with 4： lof the phenol to soybean dregs mass ratio and 10% catalyst. Under this craft condition,the liquefation efficiency reached 97.3%.