| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of efficiently operating and controlling a distillation tower even when the charge amount of a continuous distillation device is small. <P>SOLUTION: In a continuous distillation device with a heater 2 and a condenser 3 attached to a tower bottom and a tower top, respectively, a distillation tower bottom liquid is introduced into a charge stage or a recovery part when the throughput of a distillation tower 1 is small. Even when the charge liquid amount of the distillation tower is small, a part of the bottom liquid is introduced into the distillation tower charge stage or the recovery part in order to ensure stable operation of the distillation tower, whereby a weeping state of the distillation tower can be prevented by increasing the load of the distillation tower, and increase of steam usage can be reduced. <P>COPYRIGHT: (C)2012,JPO&INPIT |
