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    • 4. 发明公开
    • VERFAHREN ZUR GEWINNUNG AROMATISCHER WERTPRODUKTE AUS LIGNINHALTIGEN ZUSAMMENSETZUNGEN
    • EP3215247A1
    • 2017-09-13
    • EP15790940.9
    • 2015-11-06
    • BASF SE
    • PELZER, RalfREGENBRECHT, CarolinWONG, Chung HuanIFFLAND, GabrieleVOITL, Agnes
    • B01D15/00C07C45/79
    • C07C45/79B01D15/00C07C47/58
    • The invention relates to a method for extracting aromatic compounds from aqueous, alkaline compositions containing lignin, which have a pH value of at least pH 10, in particular of at least pH 11, especially of at least pH 12, characterized in that the aqueous, alkaline composition containing lignin is treated with active carbon, the active carbon separates from the aqueous, alkaline composition containing lignin and the active carbon then undergoes a desorption step in order to extract the aromatic compounds, wherein the desorption step comprises the treatment of the active carbon (i) by means of an organic solvent, which essentially consists of one or more aromatic hydrocarbons or a mixture of at least one aromatic hydrocarbon together with at least one C
      1 -C
      4 alkanol, or (ii) by means of water vapor, wherein an eluate is obtained which contains the aromatic compounds.
    • 本发明涉及从含有木质素的含水碱性组合物中提取芳族化合物的方法,所述组合物具有至少pH 10,特别是至少pH 11,特别是至少pH 12的pH值,其特征在于所述含水, 将含有木质素的碱性组合物用活性炭处理,将活性炭与含木质素的含水碱性组合物分离,然后进行解吸步骤以提取芳族化合物,其中解吸步骤包括处理活性炭 (i)借助于基本上由一种或多种芳族烃或至少一种芳族烃与至少一种C 1 -C 4链烷醇的混合物组成的有机溶剂,或(ii)借助水蒸气,其中 得到含有芳族化合物的洗出液。