Process and device for the purification of a mixture of organic substances of high molecular weight

Abstract

Abstract A PROCESS FOR THE PURIFICATION OF A MIXTURE OF ORGANIC SUBSTANCE OF HIGH MOLECULAR WEIGHT, WHICH COMPRISES CONVEYING THE MIXTURE CONTINUOUSLY IN EVEN FLOW THROUGH A PLURALITY OF HEATING AND COOLING ZONES UNDER VACUUM, WHILE FIRST ADDING SUFFICIENT HEAT TO THE MIXTURE FOR EVAPORATING SUBSTANTIALLY ALL OF THE FIRST RUNNING FRACTION TOGETHER WITH A SMALL PORTION OF THE MIDDLE FRACTION, THEREAFTER SUBJECTING THE DISTILLATE SO OBTAINED TO RECTIFICATION SO AS TO OBTAIN A PURE PRODUCT OF FIRST QUALITY, WHICH IS WITHDRAWN, AND A SLIGHTLY IMPURE PRODUCT OF SECOND QUALITY, AND CONTINUING THE PURIFICATION PROCESS BY EVAPORATING THE RESIDUAL MIXTURE REMAINING AFTER WITHDRAWAL OF THE FIRST-QUALITY PRODUCT, IN ADDITIONAL HEATING STAGES FOLLOWED BY CONDENSATIONS, TO OBTAIN FURTHER AMOUNTS OF FIRST-QUALITY PRODUCTS, THE HEAT ENERGY OF THE HOT VAPORS AND THE HOT CONDENSATES BEING UTILIZED FOR SAID RECTIFICATION. THE INVENTION ALSO COMPRISES A DEVICE FOR CARRYING OUT THE ABOVE PROCESS.

Inventors

• 👤 Hans Joachim Munch

Bibliographic Details