METHOD FOR MANUFACTURING SUCCINIC ACID
    3.
    发明公开

    公开(公告)号:EP3322688A1

    公开(公告)日:2018-05-23

    申请号:EP16739125.9

    申请日:2016-07-14

    申请人: PURAC Biochem BV

    摘要: The invention pertains to a method for preparing succinic acid comprising the steps of - providing an aqueous magnesium succinate solution to an acidification step, wherein the magnesium succinate solution is acidified by the addition of hydrogen chloride, thereby obtaining an aqueous solution comprising succinic acid and magnesium chloride; - subjecting an aqueous solution comprising succinic acid and magnesium chloride derived from the acidification step to a treatment step with active carbon, - precipitating succinic acid from an aqueous mixture comprising succinic acid and magnesium chloride resulting from the active carbon treatment step in a precipitation step to form solid succinic acid and a magnesium chloride solution, - separating the solid succinic acid from the magnesium chloride solution - subjecting the magnesium chloride solution to a thermal decomposition at a temperature of at least 300°C, thereby decomposing the magnesium chloride to magnesium oxide and hydrogen chloride, and - recycling the hydrogen chloride generated in the thermal decomposition step to the acidification step. It has been found the method according to the invention leads to succinic acid crystals with better properties than a comparable method wherein no active carbon treatment is used.

    METHOD FOR MANUFACTURING SUCCINIC ACID
    7.
    发明公开
    METHOD FOR MANUFACTURING SUCCINIC ACID 审中-公开
    VERFAHREN ZUR HERSTELLUNG VONBERNSTEINSÄURE

    公开(公告)号:EP3118185A1

    公开(公告)日:2017-01-18

    申请号:EP15176659.9

    申请日:2015-07-14

    申请人: PURAC Biochem BV

    摘要: The invention pertains to a method for preparing succinic acid comprising the steps of
    - providing an aqueous magnesium succinate solution to an acidification step, wherein the magnesium succinate solution is acidified by the addition of hydrogen chloride, thereby obtaining an aqueous solution comprising succinic acid and magnesium chloride;
    - subjecting an aqueous solution comprising succinic acid and magnesium chloride derived from the acidification step to a treatment step with active carbon,
    - precipitating succinic acid from an aqueous mixture comprising succinic acid and magnesium chloride resulting from the active carbon treatment step in a precipitation step to form solid succinic acid and a magnesium chloride solution,
    - separating the solid succinic acid from the magnesium chloride solution
    - subjecting the magnesium chloride solution to a thermal decomposition at a temperature of at least 300°C, thereby decomposing the magnesium chloride to magnesium oxide and hydrogen chloride, and
    - recycling the hydrogen chloride generated in the thermal decomposition step to the acidification step.
    It has been found the method according to the invention leads to succinic acid crystals with better properties than a comparable method wherein no active carbon treatment is used.

    摘要翻译: 本发明涉及一种制备琥珀酸的方法,包括以下步骤:向酸化步骤提供琥珀酸镁水溶液,其中通过加入氯化氢将琥珀酸镁溶液酸化,从而得到包含琥珀酸和镁的水溶液 氯化物; 使来自酸化步骤的琥珀酸和氯化镁的水溶液经活性炭处理步骤,从沉淀步骤中由活性炭处理步骤得到的琥珀酸和氯化镁的水性混合物沉淀琥珀酸, 形成固体琥珀酸和氯化镁溶液, - 将固体琥珀酸与氯化镁溶液分离 - 在至少300℃的温度下使氯化镁溶液进行热分解,从而将氯化镁分解成氧化镁和 和 - 将在热分解步骤中产生的氯化氢再循环到酸化步骤。 已经发现根据本发明的方法导致具有比不使用活性炭处理的可比较方法更好性能的琥珀酸晶体。

    Abtrennung von Metallchloriden aus deren Suspensionen in Chlorsilanen
    10.
    发明公开
    Abtrennung von Metallchloriden aus deren Suspensionen in Chlorsilanen 审中-公开
    从他们的混悬液氯硅烷分离金属氯化物

    公开(公告)号:EP1174388A1

    公开(公告)日:2002-01-23

    申请号:EP01112040.9

    申请日:2001-05-23

    摘要: Die Erfindung betrifft ein Verfahren zur Abtrennung von Metallchloriden aus deren Suspensionen in Chlorsilanen, bei dem man die Suspension unter Luft- und Feuchtigkeitsausschluß in einer inertisierten Zone unter Druck filtriert, den Filterkuchen in einer inertisierten Zone zerkleinert und den zerkleinerten Filterkuchen einer Lösungszone zuführt, in der die Metallchloride zu einer wäßrigen Metallchlorid-Lösung gelöst werden. Die Erfindung betrifft weiterhin eine Filter- und Lösevorrichtung für dieses Verfahren sowie einen Apparat für die Einleitung des Rohgases in eine Suspension von Metallchloriden in Chlorsilanen zur Erzeugung eines Edukts für das genannte Verfahren.

    摘要翻译: 本发明涉及一种用于从它们在氯硅烷悬浮液,其中所述悬浮液在压力下的惰性化区域下的空气和水分过滤分离金属氯化物的方法,粉碎在惰性化区中的滤饼和馈送压碎的滤饼中的溶液区,其中 金属氯化物溶于一种水性金属氯化物溶液中。 本发明还涉及一种过滤器和用于该方法和用于导入原料气体成悬浮液的金属氯化物的氯硅烷中以产生用于所述方法的原料的装置释放装置。