Industrial process for the production of a diol of high purity, diol of high purity, and distillation columns contu00ecnua stage multiple

摘要

Industrial process for the production of a diol of high purity, diol of high purity, and distillation columns contu00ecnua multiple stages. It is an object of this invention to provide a specific apparatus and process for the industrial production of a diol of high purity with a cyclic carbonate and an aliphatic alcohol monoidrico as starting materials.More specifically, it is an object to provide such an appliance specific industrial and industrial production process which are cheap and, for example, allow the diol of high purity is produced in an amount of not less than 1 toneladalh, preferably not less than 2 tonela The / h, more preferably not less than 3 tons / h,So stable over an extended period of time (e.g., no less than 1000 hours, preferably not less than 3000 hours, more preferably not less than 5000 hours).The objects above can be achieved by use of a distillation column is of multiple stages and having a specified structure, and removing a liquid component of the output side fraction, which is installed in the bottom of a chimney tray having a specified structure ins Talada in a section of the distillation column enrichment of continuous multi stages.