公开(公告)号：BRPI0412503B1

公开(公告)日：2020-11-03

申请号：BRPI0412503

申请日：2004-07-09

Applicant: BASF AG ,  BASF SE

Inventor： BERND ECK ,  HANS MARTAN ,  JOACHIM THIEL ,  JÜRGEN SCHRÖDER ,  KLAUS JOACHIM MÜLLER-ENGEL ,  ULRICH HAMMON

IPC: B01D3/14 ,  B01D3/32 ,  C07C51/215 ,  C07C51/25 ,  C07C51/43 ,  C07C51/44

Abstract: "processo de separação térmica para a remoção de pelo menos uma corrente contendo monômeros (met)acrílicos enriquecidos". a invenção diz respeito a um método para a separação de um fluxo de massa contendo monômeros (met)acrílicos enriquecidos de uma mistura contendo monômeros (met)acrílicos, em que as fases líquidas com temperatura alta e teor de monômero (met)acrílico alto retidas na área de separação são minimizadas.

公开(公告)号：MY153212A

公开(公告)日：2015-01-29

申请号：MYPI20092955

申请日：2008-01-23

Applicant: BASF SE

Inventor： NEVEN LANG ,  JOACHIM THIEL ,  ECKHARD STROEFER ,  JULIA KIRSCHBAUM ,  MARKUS SIEGERT

IPC: B01D3/14

Abstract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

公开(公告)号：MY150587A

公开(公告)日：2014-01-30

申请号：MYPI20102811

申请日：2008-12-11

Applicant: BASF SE

Inventor： MARKUS SIEGERT ,  NEVEN LANG ,  JOACHIM THIEL ,  ECKHARD STROEFER ,  CHRISTOPH SIGWART

IPC: C07D323/06

Abstract: A PROCESS FOR PREPARING CRUDE TRIOXANE (1) HAVING A CONCENTRATION IN THE RANGE FROM 50 TO 75% BY WEIGHT OF TRIOXANE BY TRIMERIZATION OF FORMALDEHYDE FROM AN AQUEOUS FORMALDEHYDE SOLUTION (2) IN THE PRESENCE OF AN ACID CATALYST (3) AND CONCENTRATION OF THE TRIOXANE FROM THE REACTION MIXTURE FROM THE TRIMERIZATION BY DISTILLATION, WHEREIN - THE TRIMERIZATION OF THE FORMALDEHYDE AND THE CONCENTRATION OF THE TRIOXANE FROM THE REACTION MIXTURE FROM THE TRIMERIZATION ARE CARRIED OUT IN A SINGLE COLUMN (K) WHICH - IS DIVIDED BY A HORIZONTAL DIVIDING PLATE (T) INTO A LOWER COLUMN REGION (A) AND AN UPPER COLUMN REGION (B), WITH THE LOWER COLUMN REGION (A) AND THE UPPER COLUMN REGION (B) BEING CONNECTED BY AN EXTERNAL VAPOR LINE AND AN EXTERNAL LIQUID LINE, AND - A REACTIVE DISTILLATION IN WHICH THE FORMALDEHYDE IS TRIMERIZED TO TRIOXANE AND THE TRIOXANE IN THE REACTION MIXTURE IS CONCENTRATED TO THE SOLUBILITY LIMIT OF FORMALDEHYDE IS CARRIED OUT IN THE LOWER COLUMN REGION (A) AT A PRESSURE IN THE RANGE FROM 0.1 TO 0.5 MPa (1 TO 5 BAR) AND - A DISTILLATION IN WHICH THE TRIOXANE IS CONCENTRATED TO GIVE CRUDE TRIOXANE HAVING A CONCENTRATION IN THE RANGE FROM 50 TO 75% BY WEIGHT IS CARRIED OUT IN THE UPPER COLUMN REGION (B) AT A PRESSURE IN THE RANGE FROM 0.02 TO 0.09 MPa (200 TO 900 MBAR), IS PROPOSED. (FIGURE 1)