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    51.
    发明专利
    未知

    公开(公告)号：NO20080529L

    公开(公告)日：2008-02-29

    申请号：NO20080529

    申请日：2008-01-29

    Applicant: BASF SE

    Inventor： STROFER ECKHARD ,  STAMMER ACHIM ,  HASSE HANS ,  LANG NEVEN ,  SIEGERT MARKUS ,  FRIESE THORSTEN ,  BLAGOV SERGEJ ,  GRUETZNER THOMAS

    IPC: C07D323/06

    Abstract: The invention relates to an integrated process for preparing trioxane from formaldehyde, comprising the steps of: a) a stream A 1 comprising water and formaldehyde and a recycle stream B 2 consisting substantially of water and formaldehyde are fed to a trioxane synthesis reactor and allowed to react to obtain a product stream A 2 comprising trioxane, water and formaldehyde; b) stream A 2 is fed to a first low-pressure distillation column and distilled at a pressure of from 0.1 to 2.5 bar to obtain a stream B 1 enriched in trioxane and additionally comprising water and formaldehyde, and the recycle stream B 2 consisting substantially of formaldehyde and water; c) stream B 1 and a recycle stream D 1 comprising trioxane, water and formaldehyde are fed to a second low-pressure distillation column and distilled at a pressure of from 0.1 to 2.5 bar to obtain a stream C 1 comprising predominantly trioxane and additionally formaldehyde and water, and a stream C 2 consisting substantially of formaldehyde and water; d) stream C 1 is fed to a high-pressure distillation column and distilled at a pressure of from 0.2 to 17.5 bar to obtain the recycle stream D 1 and a product stream D 2 consisting substantially of trioxane, in which a removal of the low boilers present in streams B 1 or C 1 may be undertaken between steps b) and c) or c) and d).

    Integrated method for producing trioxane from formaldehyde
    52.
    发明专利
    Integrated method for producing trioxane from formaldehyde 未知

    公开(公告)号：AU2006277926A1

    公开(公告)日：2007-02-15

    申请号：AU2006277926

    申请日：2006-08-04

    Applicant: BASF SE

    Inventor： LANG NEVEN ,  BLAGOV SERGEJ ,  GRUTZNER THOMAS ,  STROEFER ECKHARD ,  HASSE HANS ,  STAMMER ACHIM ,  FRIESE THORSTEN ,  SIEGERT MARKUS

    IPC: C07D323/06

    Abstract: The invention relates to an integrated process for preparing trioxane from formaldehyde in which a stream A1 comprising water and formaldehyde and a recycle stream B2 consisting substantially of water and formaldehyde are fed to a trioxane synthesis reactor in which the formaldehyde is converted to trioxane to obtain a product stream A2 comprising trioxane, water and formaldehyde; stream A2 is fed to a first distillation column and distilled at a pressure in the range from 0.1 to 2.5 bar to obtain a stream B1 enriched in trioxane, and the stream B2 consisting substantially of water and formaldehyde; stream B1 and a recycle stream D1 comprising trioxane, water and formaldehyde are fed to a second distillation column and distilled at a pressure in the range from 0.2 to 17.5 bar to obtain a product stream C2 consisting substantially of trioxane, and a stream C1 comprising trioxane, water and formaldehyde; stream C1 is fed to a third distillation column and distilled at a pressure in the range from 0.1 to 2.5 bar to obtain the recycle stream D1 comprising trioxane, water and formaldehyde, and a stream D2 consisting substantially of water and formaldehyde.

    DEVICE FOR THE SYNTHESIS OF A POLYMER WITH EXTRACTION OF A GASEOUS SUBSTANCE, COMPRISING A REACTION CHAMBER HAVING AT LEAST ONE CIRCULAR-CYLINDRICAL SECTION
    54.
    发明专利
    DEVICE FOR THE SYNTHESIS OF A POLYMER WITH EXTRACTION OF A GASEOUS SUBSTANCE, COMPRISING A REACTION CHAMBER HAVING AT LEAST ONE CIRCULAR-CYLINDRICAL SECTION 未知

    公开(公告)号：CA2913498C

    公开(公告)日：2021-09-07

    申请号：CA2913498

    申请日：2014-06-11

    Applicant: BASF SE

    Inventor： ZHU NING ,  STAMMER ACHIM ,  CLAUSS JOACHIM ,  KORY GAD

    IPC: B01J19/00 ,  B01J19/18 ,  C08G69/00

    Abstract: The invention relates to a device for the synthesis of a polymer with extraction of a gaseous substance (8) comprising a reaction chamber (1) that comprises a substantially circular-cylindrical upper section (11), which is delimited by two circular faces (111, 112) and a lateral face (113) and has a cylinder longitudinal axis, and a lower section (12), an inlet opening (2), which is arranged in a circular face or the lateral face of the upper section (11), a first outlet opening (3), which is arranged in a wall of the lower section (12), a second outlet opening (4), which is arranged in the lateral face of the upper section (11) and lies opposite the first outlet opening (3), and a stripping apparatus (5), which is arranged such that the stripping apparatus (5) can rotate about the cylinder longitudinal axis and touches both circular faces and the lateral face. Said device can be used in particular for carrying out a method that comprises feeding an oligomer melt (6) into a reaction chamber (1) through an inlet opening (2), polymerising the oligomer melt (6) to form a polymer melt (7), removing the polymer melt (7) from the reaction chamber (1) through a first outlet opening (3) of the reaction chamber, and removing a gaseous substance (8) from the reaction chamber (1) through a second outlet opening (4) of the reaction chamber (1), wherein deposits on at least one inner wall of the reaction chamber (1) are removed by a stripping apparatus (5) and transported into the oligomer melt (6).

    DEVICE FOR SYNTHESIZING A POLYMER WITH REDUCED FORMATION OF DEPOSITS IN THE REACTION CHAMBER
    57.
    发明专利
    DEVICE FOR SYNTHESIZING A POLYMER WITH REDUCED FORMATION OF DEPOSITS IN THE REACTION CHAMBER 未知

    公开(公告)号：MY170782A

    公开(公告)日：2019-08-28

    申请号：MYPI2015002911

    申请日：2014-06-11

    Applicant: BASF SE

    Inventor： ZHU NING ,  STAMMER ACHIM ,  CLAUSS JOACHIM ,  WITT UWE ,  KORY GAD ,  BIEDASEK SILKE

    Abstract: The invention relates to a device for synthesizing a polymer accompanied by separating a gaseous substance. Said device comprises: a reactor chamber (1) having a substantially circular cylinder-shaped upper section (11), which is delimited by two circular surfaces (111, 112) and a circumferential surface (113) and has a longitudinal cylinder axis, and a lower section (12), the upper section (11) and the lower section (12) being connected to one another via the first circular surface (111); an inlet opening (2); a first outlet opening (3), which is arranged in a wall of the lower section (12); a second outlet opening (4), which is arranged in the second circular surface (112) or in the circumferential surface (113) between the inlet opening (2) and the second circular surface (112); and a removal device (51), which is arranged so as to be movable along the longitudinal cylinder axis at least between the second circular surface (112) and the inlet opening (2), and contacts the circumferential surface (113). The invention further relates to a method comprising: feeding an oligomer melt (7) into a circular cylinder shaped first section (11) of a reaction chamber (1) through an inlet opening (2) tangentially to a circumferential surface (113) of the first section (11); polymerizing the oligomer melt (7) to form a polymer melt (8); removing the polymer melt (g)from the reaction chamber (1) through a first outlet opening (3) of the reaction chamber (1); and removing a gaseous substance (9) from the reaction chamber (1) through a second outlet opening (4) of the reaction chamber (1) above the inlet opening (2). Deposits on at least one inner wall of the first section (11) of the reaction chamber (1) above the inlet opening (2) are removed by a removal device (51).

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