A continuous process for the glycerolysis of soybean oil
A continuous process for the glycerolysis of soybean oil
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DOI：
10.1007/s11746-004-0882-y
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发表时间：
2004-02-01
影响因子：
2
通讯作者：
Gutsman, MR
中科院分区：
文献类型：
--
作者：
Noureddini, H;Harkey, DW;Gutsman, MR
在中试装置上研究了以大豆油酯交换反应副产物粗甘油和纯甘油为原料进行大豆油甘油解的连续工艺。该方法配备有静态和高剪切混合器。实验研究探讨了混合强度、温度、反应物流速和反应物化学计量比对MG和DG形成的影响。所开发的方法导致TG向MG的高转化率。对于涉及粗甘油的反应，最有利的条件是230 ℃、40 mL/min总流量、25 min反应时间、2.5：1甘油/大豆油摩尔比和3600 rpm，其中产物中MG和DG的浓度分别为约56和36 wt%。在类似的条件下，纯甘油的甘油解产生58%的MG和33%的DG。在一般情况下，较高的温度和混合强度有利于TG转化为MG和DG。反应温度对反应程度的影响大于混合。MG的形成接近平衡，几乎所有的情况下进行调查。
A continuous process for the glycerolysis of soybean oil with pure and crude glycerol, the co-product from the transesterification of soybean oil, was investigated in a pilot plant. The process was equipped with a static and a high-shear mixer. The experimental studies explored the effects of variations in mixing intensity, temperature, reactant flow rates, and reactant stoichiometry on the formation of MG and DG. The developed process resulted in high conversion of TG to MG. The most favorable conditions were 230 C, 40 mL/min total flow, 25 min of reaction time, 2.5:1 molar ratio of glycerol/soybean oil, and 3600 rpm for the reactions involving crude glycerol where the concentrations of MG and DG in the product were about 56 and 36 wt%, respectively. Under similar conditions, glycerolysis of pure glycerol resulted in 58% MG and 33% DG. In general, higher temperatures and mixing intensities favored the conversion of TG to MG and DG. Reaction temperature had a greater influence on the extent of the reaction than mixing. The formation of MG approached equilibrium for nearly all cases under investigation.