| 摘要 |
A two-stage separation process for separating highly unsaturated triglycerides from an interesterification reaction product by sequential chromatographic separations wherein triglycerides are separated from saturated fatty acids in the first stage and unsaturated fatty acids are recovered in the second stage for recycle to the interesterification reaction zone. In a preferred embodiment using silica gel and silicalite in the two stages, respectively, and heptanone as desorbent in both stages, triglyceride product is removed as the first stage raffinate and the unsaturated fatty acid recycle product stream is removed as the raffinate in the second stage. In another embodiment, using silicalite adsorbent in both stages and 2-heptanone and acetone in the first and second stages, respectively, saturated fatty acids are removed as the extract in the first stage and triglycerides and unsaturated fatty acids are separated as raffinate product and extract product for recycle, respectively.
|
