VERFAHREN ZUR REINIGUNG WÄSSRIGER GLYOXAL-LÖSUNGEN
    1.
    发明公开
    VERFAHREN ZUR REINIGUNG WÄSSRIGER GLYOXAL-LÖSUNGEN 有权
    清理方法乙二醛SOLUTIONS

    公开(公告)号:EP2621878A1

    公开(公告)日:2013-08-07

    申请号:EP11766943.2

    申请日:2011-09-28

    申请人: BASF SE

    IPC分类号: C07C45/80 C07C47/127

    CPC分类号: C07C45/80 C07C47/127

    摘要: A process for purifying an aqueous glyoxal solution comprising at least one acid by extractive acid removal, comprising the steps of i) mixing and dispersion of the aqueous glyoxal solution with an ion exchanger solution comprising 20 to 60% by weight of a tertiary amine and 80 to 40% by weight of an organic solvent which does not have unlimited miscibility with water at a temperature of 30 to 100°C, ii) phase separation and removal of the ion exchanger solution laden with the acid from the aqueous glyoxal solution at temperatures of 30 to 100°C, and iii) regeneration of the ion exchanger solution by contacting with a basic compound for neutralization of the acid and removal of the basic compound, iv) mixing and dispersion of the ion exchanger solution with water to free it of salts formed in the neutralization to obtain a dispersion of water and ion exchanger solution, v) phase separation and removal of the aqueous phase from the ion exchanger solution, and recycling of the ion exchanger solution into step i), which comprises phase separation and removal of the aqueous phase in step v) in such a way that the content of the aqueous phase of the regenerated ion exchanger solution obtained in step v) is

    VERFAHREN ZUR HERSTELLUNG VON CHLOR

    公开(公告)号:EP2414283A1

    公开(公告)日:2012-02-08

    申请号:EP10710046.3

    申请日:2010-03-25

    申请人: BASF SE

    IPC分类号: C01B7/04

    CPC分类号: C01B7/04

    摘要: A process is proposed for preparing chlorine by oxidizing hydrogen chloride in the presence of a heterogeneous particulate catalyst by the Deacon process in a fluidized bed reactor (1), wherein the heat of reaction is removed by evaporative cooling with water which circulates in the tubes (2) of a shell and tube heat exchanger, wherein the water is supplied from a steam drum (4) via a feed line (5) to the tubes (2) of the shell and tube heat exchanger at one end thereof, it heats up in the tubes (2) by absorbing the heat of reaction and evaporates partly to obtain a water/steam mixture which is passed back into the steam drum (4) via a return line (6) at the other end of the tubes (2) of the shell and tube heat exchanger, which is characterized in that the maximum pressure for which the fluidized bed reactor (1) has to be designed for the event of fracture of a tube (2) of the shell and tube heat exchanger is minimized by introducing a valve (7) into the feed line (5) and into the return line (6), said valve (7), in the event of a pressure rise owing to the fracture of a tube (2), blocking the feed line (5) and the return line (6), thus preventing water from flowing out of the steam drum (4) into the fluidized bed reactor (1).

    摘要翻译: 提出了一种通过在流化床反应器(1)中通过Deacon法在非均相颗粒催化剂存在下氧化氯化氢来制备氯气的方法,其中反应热通过用在管中循环的水进行蒸发冷却而除去 2)的壳管式热交换器,其中水从蒸汽鼓(4)经由供给管线(5)供给到其一端的壳管式热交换器的管(2),其加热 在管(2)中通过吸收反应热并且部分地蒸发以获得水/蒸汽混合物,所述水/蒸汽混合物经由管(2)的另一端处的返回管线(6)返回到蒸汽鼓(4) 其特征在于,流化床反应器(1)必须设计用于壳管式热交换器的管(2)断裂事件的最大压力最小化为 将阀(7)引入进料管线(5)和进料管中 所述阀(7)在由于管(2)的断裂而导致压力升高的情况下阻塞供给管线(5)和返回管线(6),从而防止水流动 离开蒸汽鼓(4)进入流化床反应器(1)。

    VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG VON ISOCYANATEN

    公开(公告)号:EP2408738A2

    公开(公告)日:2012-01-25

    申请号:EP10709217.3

    申请日:2010-03-18

    申请人: BASF SE

    IPC分类号: C07C263/10 C07C265/00

    摘要: The invention relates to a method for producing isocyanates by converting the corresponding amine with phosgene in the gas phase, in the presence of an inert medium as applicable, wherein phosgene and amine are first vaporized and then overheated to reaction temperature, the overheated phosgene and amine are mixed and added to a reactor wherein the phosgene and the amine are converted to isocyanate, wherein the dwell time of the phosgene at temperatures greater than 300°C equals a maximum of 5 sec and/or the temperature of heat transfer surfaces in contact with the phosgene is 20 K above the phosgene temperature to be set at maximum. The invention further relates to a device for producing isocyanates by converting the corresponding amine with phosgene in the gas phase.

    摘要翻译: 本发明涉及一种生产异氰酸酯的方法,该方法通过在惰性介质存在下将气相中的相应胺转化为气相,其中光气和胺首先被蒸发,然后过热至反应温度,过热的光气和胺 混合并加入其中光气和胺转化为异氰酸酯的反应器中,其中光气在高于300℃的温度下的停留时间等于最多5秒和/或与其接触的传热表面的温度 光气比光气温度高20K以设定最大值。 本发明还涉及一种通过在气相中用光气转化相应的胺来生产异氰酸酯的装置。

    VERFAHREN ZUR HERSTELLUNG VON CAROTINOID-LÖSUNGEN V
    6.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON CAROTINOID-LÖSUNGEN V 有权
    VERFAHREN ZUR HERSTELLUNG VON CAROTINOID-LÖSUNGENV

    公开(公告)号:EP2403361A1

    公开(公告)日:2012-01-11

    申请号:EP10707006.2

    申请日:2010-03-03

    申请人: BASF SE

    IPC分类号: A23L1/275 F28D3/00 C07C403/24

    摘要: The present invention relates to a method for producing carotenoid solutions in an oil suitable for food. In particular, the invention relates to a method for dissolving a carotenoid, in particular astaxanthin, in an oil suitable for food by heating a suspension of the carotenoid, especially astaxanthin, in the oil and then rapidly cooling (quenching) the obtained solution. The method comprises the following steps: i. providing a suspension of the carotenoid in an oil suitable for food; ii. continuously heating a flow of the carotenoid suspension, wherein a hot carotenoid solution is obtained; and iii. continuously rapidly cooling the hot carotenoid solution, wherein the carotenoid suspension is conducted over a heated heat exchanger surface as a thin liquid film in order to continuously heat the carotenoid suspension.

    摘要翻译: 本发明涉及在适用于食品的油中生产类胡萝卜素溶液的方法。 具体地说,本发明涉及一种通过在油中加热类胡萝卜素特别是虾青素的悬浮液然后快速冷却(骤冷)所得溶液来将类胡萝卜素,特别是虾青素溶解在适合食物的油中的方法。 该方法包括以下步骤:i。 提供类胡萝卜素在适合食物的油中的悬浮液; II。 连续加热类胡萝卜素悬浮液的流动,其中获得热的类胡萝卜素溶液; 和iii。 连续快速冷却热类胡萝卜素溶液,其中类胡萝卜素悬浮液作为薄液膜在加热的换热器表面上传导以连续加热类胡萝卜素悬浮液。

    VERFAHREN ZUR GEWINNUNG VON CYCLODODECATRIEN DURCH VERDAMPFUNG
    7.
    发明授权
    VERFAHREN ZUR GEWINNUNG VON CYCLODODECATRIEN DURCH VERDAMPFUNG 有权
    一种获得三烯由于膨胀

    公开(公告)号:EP1907342B1

    公开(公告)日:2011-12-21

    申请号:EP06763996.3

    申请日:2006-06-30

    申请人: BASF SE

    IPC分类号: C07C7/04 C07C13/277

    CPC分类号: C07C7/04 C07C13/277

    摘要: The invention relates to a method for obtaining cyclododecatriene (CDT) from a solution containing CDT and high-boiling components such as a deactivated catalyst and polymers. Said solution is supplied to a preheater and heated, and is then relaxed over a downstream pressure maintaining device, and the two-phase mixture obtained is supplied to a spiral tube evaporator where the CDT content of the liquid phase is reduced by partial evaporation and a gaseous product flow with an increased CDT concentration is derived.

    VERFAHREN ZUR HERSTELLUNG VON ISOCYANATEN

    公开(公告)号:EP2197836A1

    公开(公告)日:2010-06-23

    申请号:EP08803255.2

    申请日:2008-08-27

    申请人: BASF SE

    摘要: The invention relates to a method for producing polyisocyanates, comprising the following steps: a) amines are reacted with phosgene; b) hydrogen chloride, excess phosgene, and, if necessary, the solvent are separated from the reaction mixture; c) the liquid mixture from step b) is separated into a liquid and a gaseous phase; d) the gaseous phase from step c) is processed into the polyisocyanate.

    摘要翻译: 本发明涉及一种生产多异氰酸酯的方法,包括以下步骤:a)胺与光气反应; b)将氯化氢,过量的光气和必要时的溶剂从反应混合物中分离出来; c)将来自步骤b)的液体混合物分离成液相和气相; d)将来自步骤c)的气相加工成多异氰酸酯。