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    KONTINUIERLICHES VERFAHREN ZUR MEHRSTUFIGEN TROCKNUNG UND NACHKONDENSATION VON POLYAMIDGRANULAT
    63.
    发明公开
    KONTINUIERLICHES VERFAHREN ZUR MEHRSTUFIGEN TROCKNUNG UND NACHKONDENSATION VON POLYAMIDGRANULAT 有权
    多级干燥连续法和冷凝聚酰胺GRANULAT的

    公开(公告)号：EP2297228A1

    公开(公告)日：2011-03-23

    申请号：EP09765919.7

    申请日：2009-06-19

    Applicant: BASF SE

    Inventor： LOTH, Wolfgang ,  EL-TOUFAILI, Faissal-Ali ,  STAMMER, Achim ,  KORY, Gad ,  GERSTLAUER, Achim ,  BECKER, Jens

    IPC: C08G69/46

    CPC classification number: C08G69/46 ,  C08G69/16

    Abstract: A continuous method for multi-staged drying and subsequent condensation of solid phase polyamide granulate is characterized in that 1) the pre-drying is carried out in a continuous drying apparatus operated in counter-flow or cross-flow mode with inert gas, steam or a mixture of inert gas and steam at a granulate temperature in the range of 70 to 200°C and 2) the subsequent continuous post-condensation is carried out in a separate shaft with a moving bed at a granulate temperature in the range of 120 to 210°C, wherein the shaft is operated in counter-flow mode with inert gas, steam or a mixture of inert gas and steam, the inert gas is fed at at least two points along the shaft, wherein 15 to 90% of the inert gas is fed at the base of the shaft and 10 to 85% of the inert gas is fed at the upper half below the granulate surface.

    INTEGRIERTES VERFAHREN ZUR HERSTELLUNG VON TRIOXAN AUS FORMALDEHYD
    64.
    发明授权
    INTEGRIERTES VERFAHREN ZUR HERSTELLUNG VON TRIOXAN AUS FORMALDEHYD 有权

    公开(公告)号：EP1915358B1

    公开(公告)日：2008-12-17

    申请号：EP06778089.0

    申请日：2006-08-01

    Applicant: BASF SE

    Inventor： LANG, Neven ,  STRÖFER, Eckhard ,  STAMMER, Achim ,  FRIESE, Thorsten ,  SIEGERT, Markus ,  HASSE, Hans ,  GRÜTZNER, Thomas ,  BLAGOV, Sergej

    IPC: C07D323/06

    CPC classification number: C07D323/06 ,  Y02P20/125

    Abstract: The invention relates to an integrated method for producing trioxane from formaldehyde. According to said method, a flow A1 containing water and formaldehyde as well as a recirculation flow B2 substantially composed of water and formaldehyde are delivered to a trioxane synthesis reactor in which the formaldehyde is reacted to trioxane such that a product flow A2 containing trioxane, water, and formaldehyde is obtained. Flow A2 and a recirculation flow D1 containing trioxane, water, and formaldehyde are fed to a first distillation column and are distilled at a pressure ranging from 0.1 to 2.5 bar such that a trioxane-enriched flow B1 and flow B2, which is essentially composed of water and formaldehyde, are obtained. Flow B1 is delivered to a second distillation column and is distilled at a pressure ranging from 0.2 to 17.5 bar such that a product flow substantially comprising trioxane and a flow C1 containing trioxane, water, and formaldehyde are obtained. Flow C1 is fed to a third distillation column and is distilled at a pressure ranging from 1 to 10 bar such that the recirculation flow D1 containing trioxane, water, and formaldehyde as well as a flow D2 that is substantially composed of water are obtained.

    Abstract translation: 本发明涉及由甲醛生产三恶烷的综合方法。 根据所述方法，将含有水和甲醛的流A1以及基本上由水和甲醛组成的再循环流B2输送到三烷合成反应器中，在该反应器中甲醛与三烷反应，从而产生含有三烷，水 ，并获得甲醛。 将含有三恶烷，水和甲醛的流动A2和再循环流D1送入第一蒸馏塔并在0.1-2.5巴的压力下蒸馏，使得富含三烷的流B1和流B2基本上由 水和甲醛。 将流B1输送至第二蒸馏塔并在0.2至17.5巴范围内的压力下蒸馏，使得获得基本上包含三烷和含三烷，水和甲醛的流C1的产物流。 将流C1供入第三蒸馏塔并在1-10巴的压力下蒸馏，从而获得包含三烷，水和甲醛的再循环流D1以及基本上由水组成的流D2。

    VERFAHREN ZUR HERSTELLUNG VON POLYOXYMETHYLENHOMO- ODER -COPOLYMEREN
    65.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON POLYOXYMETHYLENHOMO- ODER -COPOLYMEREN 审中-公开
    用于生产聚甲醛均聚物或共聚物

    公开(公告)号：EP1922346A1

    公开(公告)日：2008-05-21

    申请号：EP06793021.4

    申请日：2006-08-25

    Applicant: BASF SE

    Inventor： LANG, Neven ,  ZÖLLNER, Knut ,  STAMMER, Achim ,  STÖCKELMANN, Elmar

    IPC: C08G2/10 ,  C08G2/28 ,  C07D323/06

    CPC classification number: C08G2/10 ,  C07D323/06 ,  C08G2/28 ,  Y02P20/582

    Abstract: A method for production of polyoxymethylene homo- or co-polymers by homo- or co-polymerisation of trioxan or additional suitable co-monomers is disclosed, wherein trioxan is firstly produced in a monomer plant, which contains residual monomer and which is degassed in one or more stages to give one or more vapour streams (13, 14), optionally fed to a condenser (K) wherein the condensable components are condensed out to give a condensate (15), recycled into the polymerisation reactor (P) and a gaseous stream (16) containing formaldehyde and a partly degassed polyoxymethylene homo- or co-polymer (17), supplied to an extruder (E) or mixer and mixed with normal additives and processing agents to give a polymer melt (19) with removal of a formaldehyde-containing extruder or mixer exhaust gas (18) from the extruder (E) or mixer, characterised in that the formaldehyde-containing by product streams (14, 16, 18) are directly recycled to the monomer plant from the polymer plant without addition of adjuncts.

    INTEGRIERTES VERFAHREN ZUR HERSTELLUNG VON TRIOXAN AUS FORMALDEHYD
    66.
    发明公开
    INTEGRIERTES VERFAHREN ZUR HERSTELLUNG VON TRIOXAN AUS FORMALDEHYD 审中-公开

    公开(公告)号：EP1912965A1

    公开(公告)日：2008-04-23

    申请号：EP06764207.4

    申请日：2006-07-19

    Applicant: BASF SE

    Inventor： LANG, Neven ,  STRÖFER, Eckhard ,  STAMMER, Achim ,  FRIESE, Thorsten ,  SIEGERT, Markus ,  HASSE, Hans ,  GRÜTZNER, Thomas ,  BLAGOV, Sergej

    IPC: C07D323/06

    CPC classification number: C07D323/06 ,  Y02P20/125

    Abstract: The invention relates to an integrated process for preparing trioxane from formaldehyde, comprising the steps of: a) feeding a stream A1 comprising water and formaldehyde and a recycle stream B2 consisting essentially of water and formaldehyde to a trioxane synthesis reactor and allowing them to react to obtain a product stream A2 comprising trioxane, water and formaldehyde; b) feeding stream A2 to a first low-pressure distillation column and distilling it at a pressure of 0.1 to 2.5 bar to obtain a stream B1 which has been enriched in trioxane and additionally comprises water and formaldehyde and the recycle stream B2 which consists essentially of formaldehyde and water; c) feeding stream B1 and a recycle stream D1 which comprises trioxane, water and formaldehyde to a second low-pressure distillation column and distilling them at a pressure of 0.1 to 2.5 bar to obtain a stream C1 comprising predominantly trioxane and additionally formaldehyde and water, and a stream C2 consisting essentially of formaldehyde and water; d) feeding stream C1 to a high-pressure distillation column and distilling it at a pressure of 0.2 to 17.5 bar to obtain the recycle stream D1 and a product stream D2 consisting essentially of trioxane, wherein a removal of the low boilers present in streams B1 and/or C1 can be undertaken between steps b) and c) or c) and d).

    Abstract translation: 包括以下步骤：a）将包含水和甲醛的料流A1和基本上由水和甲醛组成的再循环料流B2供入三烷合成反应器中，并使其与三烷合成反应器反应 获得包含三恶烷，水和甲醛的产物流A2; b）将物流A2进料到第一低压蒸馏塔中，并在0.1-2.5巴的压力下将其蒸馏以获得富含三烷并另外包含水和甲醛的物流B1和基本上由 甲醛和水; c）将物流B1和包含三恶烷，水和甲醛的循环物流D1加入到第二低压蒸馏塔中，并在0.1-2.5巴的压力下蒸馏它们以获得主要包含三烷和甲醛和水的物流C1， 和主要由甲醛和水组成的物流C2; d）将物流C1进料至高压蒸馏塔并在0.2至17.5巴的压力下将其蒸馏以获得再循环物流D1和基本上由三恶烷组成的产物物流D2，其中去除存在于物流B1中的低沸物 和/或C1可以在步骤b）和c）或c）和d）之间进行。

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