公开(公告)号：MY145103A

公开(公告)日：2011-12-30

申请号：MYPI20091586

申请日：2007-10-17

Applicant: BASF SE

Inventor： JORG HEILEK ,  JOACHIM MULLER-ENGEL KLAUS DR ,  MARTIN DIETERLE ,  ARMIN DIEFENBACHER

IPC: C07C51/42

Abstract: METHOD OF SEPARATING THE ACRYLIC ACID FROM BENZOIC ACID CONTAINED IN A PRODUCT GAS MIXTURE FROM A HETEROGENEOUSLY CATALYZED GAS PHASE PARTIAL OXIDATION OF A C3-PRECURSOR 5 COMPOUND OF ACR)@IC ACID A METHOD OF SEPARATING ACRYLIC ACID-CONTAINING ACRYLIC ACID AND BENZOIC ACID IN A PRODUCT GAS MIXTURE FROM A PARTIAL OXIDATION, IN WHICH THE ACRYLIC ACID AND THE BENZOIC ACID ARE FIRST CONVENED INTO A LIQUID PHASE, COMPONENTS LIGHTER THAN BENZOIC ACID AND ACRYLIC ACID ARE BOILED AWAY BY MEANS OF THERMAL SEPARATION METHODS, AND THE ACRYLIC ACID IS SEPARATED BY CRYSTALLIZATION FROM THE I 0 REMAINING LIQUID PHASE.