公开(公告)号：DE10222163A1

公开(公告)日：2003-11-27

申请号：DE10222163

申请日：2002-05-17

Applicant: BASF AG

Inventor： WAGNER KATRIN ,  RAULS MATTHIAS ,  FREYHOF REINHARD ,  FRIESE THORSTEN ,  ARMBRUSTER HARALD ,  ZEINER HARTMUT ,  EGBERS GITTA ,  STROEFER ECKHARD ,  HECK LUDWIG E ,  HILDENBRAND PETER

IPC: C07D323/06

Abstract: Production of trioxane by trimerization of formaldehyde in aqueous acid solution followed by separation of trioxane from a crude trioxane product mixture of trioxane, water and formaldehyde comprises: distillation of the crude trioxane; crystallization of the trioxane and; separation from the mother liquor followed by melting and distillation of other byproducts. A process for the production of trioxane by trimerization of formaldehyde in aqueous acid solution followed by separation of trioxane from a crude trioxane product mixture of trioxane, water and formaldehyde comprises: (a) distillation of the crude trioxane; (b) crystallization of the trioxane and; (c) separation from the mother liquor followed by; (d) melting and; (e) distillation of other byproducts.

公开(公告)号：AU2002250959A1

公开(公告)日：2003-09-04

申请号：AU2002250959

申请日：2002-02-15

Applicant: BASF AG

Inventor： STROFER ECKHARD ,  BREDEHOFT JAN PETER ,  PALLASCH HANS-JURGEN ,  HECK LUDWIG E

IPC: B01D1/30 ,  B01D3/32 ,  B60P1/28 ,  C07C263/10 ,  C07C265/14 ,  B01D3/00

Abstract: An arrangement for carrying out chemical reactions comprises at least one distillation column and/or at least one container and at least one circulation evaporator, which are connected to one another via connecting elements, liquid being taken off completely or partly from a tray or from a stacked packing bed or from a dumped packing bed or from a liquid collector of the distillation column or being fed as an external feed stream below the lower tube sheet of the circulation evaporator to said evaporator.