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    VERFAHREN ZUR GEWINNUNG VON (CHLOR)KOHLENWASSERSTOFFFREIEM CHLORWASSERSTOFF UND PHOSGENFREIEN (CHLOR)KOHLENWASSERSTOFFEN AUS EINEM (CHLOR)KOHLENWASSERSTOFFE UND PHOSGEN ENTHALTENDEN CHLORWASSERSTOFFSTROM
    3.
    发明公开
    VERFAHREN ZUR GEWINNUNG VON (CHLOR)KOHLENWASSERSTOFFFREIEM CHLORWASSERSTOFF UND PHOSGENFREIEN (CHLOR)KOHLENWASSERSTOFFEN AUS EINEM (CHLOR)KOHLENWASSERSTOFFE UND PHOSGEN ENTHALTENDEN CHLORWASSERSTOFFSTROM 有权
    一种获得（氯）油气游离盐酸和光气（氯）碳氢化合物A（氯）烃和光气含有盐酸电源

    公开(公告)号：EP1981619A1

    公开(公告)日：2008-10-22

    申请号：EP07712101.0

    申请日：2007-01-25

    申请人： BASF SE

    发明人： SESING, Martin ,  SCHELLING, Heiner ,  CIPRIAN, Jürgen ,  DEBERDT, Filip ,  KARCHES, Martin ,  SCHUBERT, Olga

    IPC分类号： B01D53/68 ,  B01D53/70 ,  B01D53/75 ,  C01B7/07

    CPC分类号： C01B7/0718

    摘要： In a process for extracting (chlorinated) hyrocarbon-free hydrogen chloride and phosgene-free (chlorinated) hydrocarbons from a hydrogen chloride stream containing (chlorinated) hydrocarbons and phosgene, (i) the fresh hydrogen chloride stream containing phosgene and (chlorinated) hydrocarbons is led in a first step first through a first adsorber and then through a second adsorber interconnected in series, until essentially no more (chlorinated) hydrocarbon is adsorbed by the first adsorber; (ii) the fresh hydrogen chloride stream is led in a second step through the second adsorber, while the first adsorber is regenerated, substantially phosgene-free (chlorinated) hydrocarbon being produced during regeneration; (iii) the fresh hydrogen chloride stream is led in a third step first through the second adsorber and then through the regenerated first adsorber, until substantially no more (chlorinated) hydrocarbon is adsorbed by the second adsorber; (iv) the fresh hydrogen chloride stream is led in a fourth step through the first adsorber, while the second adsorber is regenerated, a substantially phosgene-free (chlorinated) hydrocarbon being produced during regeneration, and steps (i) to (iv) can be successively repeated one or more times.

    VERFAHREN ZUR GEWINNUNG VON REIN-ANILIN
    5.
    发明公开
    VERFAHREN ZUR GEWINNUNG VON REIN-ANILIN 有权
    得到纯 - 苯胺

    公开(公告)号：EP2906528A1

    公开(公告)日：2015-08-19

    申请号：EP13774667.3

    申请日：2013-10-10

    申请人： BASF SE

    发明人： VANDEWALLE, Koenraad ,  VERCRUYSSE, Karen ,  DENISSEN, Leo ,  DEBERDT, Filip ,  DE WINNE, Hendrik ,  VAN DE VOORDE, Bart ,  REISER, Michael ,  NETO, Samuel

    IPC分类号： C07C209/84 ,  C07C211/46

    CPC分类号： C07C209/84 ,  C07C211/46

    摘要： The invention relates to a method for obtaining pure aniline by catalytically hydrogenating nitrobenzene and reprocessing the reaction mixture obtained therefrom, having the following method steps: - the catalytic hydrogenation of nitrobenzene; - optionally the partial condensation of the reaction mixture of the catalytic hydrogenation in one or more stages; - the separation of the reaction mixture obtained after the catalytic hydrogenation or the condensation, which is optionally carried out, into a gas phase, which contains hydrogen, and a liquid phase; - the liquid-liquid phase separation of the liquid phase obtained in the separation step, thereby obtaining an aqueous phase, which is further reprocessed or discharged, and raw analine as an organic phase, said raw analine containing 90-95 wt.% aniline, 4-9 wt.% water, and residual high boilers relative to the analine, in each case based on the total weight of the raw analine, and the sum of the components of the raw analine equaling 100 wt.%; and - the pre-cleaning of the raw analine by partly or completely separating the water via the head stream of a first distillation column, thereby obtaining a bottom stream that is fed as a feed stream to a purification column from which a pure aniline stream containing at least 99.9 wt.% aniline based on the total weight of the pure analine stream is drawn via the head and a bottom stream containing high boilers is drawn and fed to a combustion process. The invention is characterized in that the weight ratio of the bottom stream from the purification column is limited to maximally 0.8% relative to the weight of the feed stream, thereby ensuring that said bottom stream can be pumped under the effect of a corresponding trace heating of the lines provided for this purpose, said trace heating ensuring that the temperature of the stream conducted in the lines is 45 °C or higher, wherein the bottom stream is exposed to methanol, ethanol, propanol, acetone, or mixtures thereof in a weight ratio of 5-30% based on the weight of the bottom stream.