释义 |
enriching column [in`rich·iŋ ´käl·ǝm] CHEMICAL ENGINEERING The portion of a countercurrent contractor (liquid-liquid extraction or vapor-liquid distillation) above the feed point in which an upward-moving, product-rich stream from the stripping column is further purified by countercurrent contact with a downward-flowing reflux stream from the overhead product-recovery vessel. |