公开(公告)号：US3686077A

公开(公告)日：1972-08-22

申请号：US3686077D

申请日：1970-04-01

Applicant: STAMICARBON

Inventor： KONING HENDRIK DE

IPC: B01D1/06 ,  B01D1/10 ,  C07D201/16 ,  B01D3/04

CPC classification number: C07D201/16 ,  B01D1/06 ,  B01D1/10 ,  Y10S159/10

Abstract: A PROCESS FOR THE SEPARATION OF LOWER BOILING POINT LIQUIDS FROM THOSE OF A HIGH BOILING POINT, AND APPARATUS THEREFOR IS DISCLOSED. THE LIQUID MIXTURE IS SUPPLIED TO THE BASE OF THE EXTRACTOR AND PASSED UPWARDS UNDER CONTROLLED TEMPERATURE AND REDUCED PRESSURE IN THE VAPOR STATE THROUGH SEVERAL TUBES, WHOSE LENGTH IS FROM 15 TO 35 TIMES THEIR DIAMETER; THE VAPOR LEAVES THE TUBES AT A

VELOCITY APPROACHING THE VELOCITY OF SOUND IN THE VAPOR, AND IS SUBSEQUENTLY CONDENSED. THE LOWER BOILING LIQUID THUS RECOVERED IS OF HIGH PURITY, OFTEN REPRESENTING UP TO 90% OF THE TOTAL LOWER BOILING FRACTION OF THE MIXTURE ENTERING THE EVAPORATOR.