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    • 1. 发明授权
    • Process for reducing the salt content of fractions comprising high boilers obtained in the preparation of phenol from cumene, by extraction
    • 通过萃取,还原包含从异丙苯制备苯酚得到的高锅炉馏分的盐含量的方法
    • US06489518B1
    • 2002-12-03
    • US09709353
    • 2000-11-13
    • Manfred WeberMarkus WeberHeinrich van BarneveldPeter BickertWilfried Jordan
    • Manfred WeberMarkus WeberHeinrich van BarneveldPeter BickertWilfried Jordan
    • C07C3768
    • C07C37/72C07C39/04
    • A process for reducing the salt content of fractions comprising high boilers obtained in the preparation of phenol from cumene, by extraction, is claimed. In the preparation of phenol from cumene, not only phenol and acetone but also by-products such as dimethyl phenyl carbinol or acetophenone are formed in the cleavage of cumene hydroperoxide. In the work-up of the cleavage product phase by distillation, these by-products are obtained as a fraction which boils only at high temperatures. These fractions further comprise alkali metal in the form of salts as a result of the neutralization by means of aqueous sodium hydroxide after the acid catalyzed cleavage. The presence of salt in this phase makes the work-up of this phase considerably more difficult. The salt is usually removed from the fraction by extraction of the fraction with water. However, considerable problems can occur if the aqueous phase cannot be cleanly separated from the organic phase. According to the invention, not only water but also an organic liquid is added to the fractions comprising high boilers for the purposes of extraction. This aids and accelerates the subsequent phase separation. The organic liquid to be added to the fractions comprising high boilers can be removed again from the treated fractions by simple distillation. Furthermore, the process of the invention lowers the phenol content of the fractions comprising high boilers and phenol is recovered. Fractions comprising high boilers which have been treated according to the invention can be used as starting material for the production of carbon black.
    • 要求保护包含从异丙苯制备苯酚得到的高沸点馏分的馏分的盐含量的方法。 在从异丙基苯制备苯酚时,在氢过氧化枯烯的裂解中不仅形成苯酚和丙酮,而且还产生二甲基苯基甲醇或苯乙酮等副产物。 在通过蒸馏处理裂解产物相时,这些副产物作为仅在高温下沸腾的馏分获得。 由于在酸催化裂解后通过氢氧化钠水溶液中和,这些级分还包含盐形式的碱金属。 在这一阶段盐的存在使得这一阶段的后处理更加困难。 盐通常通过用水萃取级分从馏分中除去。 然而,如果水相不能与有机相清洁分离,则可能会发生相当大的问题。 根据本发明,为了提取的目的,不仅将水,而且有机液体加入到包含高锅炉的馏分中。 这有助于并加速随后的相分离。 通过简单蒸馏,可以从经处理的馏分再次除去加入到包含高锅炉的馏分中的有机液体。 此外,本发明的方法降低了包含高锅炉和苯酚的馏分的苯酚含量。根据本发明已经处理的包含高锅炉的馏分可以用作生产炭黑的起始原料。
    • 2. 发明申请
    • PROCESS FOR REMOVAL OF HYDROXYACETONE FROM PHENOL
    • 从苯酚中除去羟基酮的方法
    • US20070244346A1
    • 2007-10-18
    • US11736531
    • 2007-04-17
    • Otto SchnurrManfred WeberMarkus Weber
    • Otto SchnurrManfred WeberMarkus Weber
    • C07C37/08
    • C07C37/08C07C39/04
    • The present invention relates to method for producing phenol which includes: a) oxidizing cumene to form an oxidation product containing cumene hydroperoxide; b) cleaving the oxidation product using an acidic catalyst to form a cleavage product containing phenol, acetone and impurities; c) neutralizing and washing the cleavage product with a basic aqueous medium to obtain a neutralized cleavage product; d) separating the neutralized cleavage product by at least one distillation step into at least a phenol containing fraction and an aqueous fraction comprising hydroxyacetone; e) treating the aqueous fraction with an oxidizing agent in presence of a base to obtain a basic aqueous medium reduced in hydroxyacetone; f) recycling at least a portion of the basic aqueous medium to the neutralizing and washing step c); and g) recovering phenol from the phenol containing fraction obtained in step d).
    • 本发明涉及苯酚的制备方法,其包括:a)氧化枯烯以形成含有氢过氧化枯烯的氧化产物; b)使用酸性催化剂切割氧化产物以形成含有苯酚,丙酮和杂质的裂解产物; c)用碱性水性介质中和洗涤裂解产物以获得中和的裂解产物; d)将中和的裂解产物通过至少一个蒸馏步骤分离成至少含苯酚的级分和包含羟基丙酮的含水级分; e)在碱的存在下用氧化剂处理含水部分以获得羟基丙酮中还原的碱性水性介质; f)将至少一部分碱性水性介质再循环到中和和洗涤步骤c)中; 和g)从在步骤d)中获得的含苯酚馏分中回收苯酚。
    • 3. 发明申请
    • Process for the preparation of phenolic compounds, for separating phenol from cleavage product mixtures, and an apparatus
    • 酚类化合物的制备方法,用于从分离产物混合物中分离苯酚和设备
    • US20050034970A1
    • 2005-02-17
    • US10888533
    • 2004-07-09
    • Christoph SchwarzMarkus WeberManfred Weber
    • Christoph SchwarzMarkus WeberManfred Weber
    • B01D3/14B01D3/32C07C37/08C07C37/74C07C39/04C07C45/53C07C45/82B01D3/00B01D3/02C07C27/26C07C29/74
    • C07C45/82B01D3/146B01D3/322C07C37/08C07C37/74C07C45/53C07C49/17C07C49/08C07C39/04
    • To improve energy efficiency of prior art processes while preserving the standards of quality and total yield of desired end products, a process for the preparation of phenolic compounds is proposed. The process of the invention comprises working-up of the cleavage product mixtures by distillation, which comprises resolving the cleavage product mixture into at least three fractions in a single distillation step by feeding the cleavage product mixture to the side of a distillation column, removing a first fraction comprising the ketone at the top of the distillation column, removing a second fraction comprising the phenolic compound at the bottom of the distillation column, and removing a third fraction comprising unreacted the alkylaryl compound and the hydroxy ketone, and water, as side stream, whereby the side stream take-off is situated above the feed of cleavage product mixture to the distillation column, characterized by removing heat from the distillation column, whereby the heat take-off is situated above the side stream take-off of the third fraction, and a process for separating phenol from cleavage product mixtures, wherein the cleavage product mixture prior feeding into the distillation column, is preheated to a temperature of above 70° C. at standard pressure, preferably to a temperature of above 100° C., more preferably to a temperature between 110° C. and 180° C., most preferred to a temperature of about 140° C. to 146° C., and an apparatus suitable therefore.
    • 为了提高现有技术工艺的能量效率,同时保持所需最终产品的质量和总产量的标准,提出了制备酚类化合物的方法。 本发明的方法包括通过蒸馏处理裂解产物混合物,其包括在单一蒸馏步骤中将裂解产物混合物分解成至少三个级分,将裂解产物混合物加入到蒸馏塔的侧面,除去 在蒸馏塔顶部包含酮的第一馏分,在蒸馏塔的底部除去包含酚类化合物的第二级分,并除去包含未反应的烷基芳基化合物和羟基酮的第三馏分和水作为侧流 ,由此侧流起飞位于裂解产物混合物的进料到蒸馏塔的上方,其特征在于从蒸馏塔除去热量,由此该热量取出位于第三馏分的侧流起飞之上 以及从裂解产物混合物中分离苯酚的方法,其中先前加入的裂解产物混合物 蒸馏塔在标准压力下预热至高于70℃的温度,优选至高于100℃的温度,更优选至110℃至180℃的温度,最优选为 温度为约140℃至146℃,因此适用的装置。
    • 4. 发明授权
    • Process for the preparation of phenolic compounds, for separating phenol from cleavage product mixtures, and an apparatus
    • 酚类化合物的制备方法,用于从分离产物混合物中分离苯酚和设备
    • US07626060B2
    • 2009-12-01
    • US10888533
    • 2004-07-09
    • Christoph SchwarzMarkus WeberManfred Weber
    • Christoph SchwarzMarkus WeberManfred Weber
    • C07C37/00C07C37/68
    • C07C45/82B01D3/146B01D3/322C07C37/08C07C37/74C07C45/53C07C49/17C07C49/08C07C39/04
    • To improve energy efficiency of prior art processes while preserving the standards of quality and total yield of desired end products, a process for the preparation of phenolic compounds is proposed. The process of the invention comprises working-up of the cleavage product mixtures by distillation, which comprises resolving the cleavage product mixture into at least three fractions in a single distillation step by feeding the cleavage product mixture to the side of a distillation column, removing a first fraction comprising the ketone at the top of the distillation column, removing a second fraction comprising the phenolic compound at the bottom of the distillation column, and removing a third fraction comprising unreacted the alkylaryl compound and the hydroxy ketone, and water, as side stream, whereby the side stream take-off is situated above the feed of cleavage product mixture to the distillation column, characterized by removing heat from the distillation column, whereby the heat take-off is situated above the side stream take-off of the third fraction, and a process for separating phenol from cleavage product mixtures, wherein the cleavage product mixture prior feeding into the distillation column, is preheated to a temperature of above 70° C. at standard pressure, preferably to a temperature of above 100° C., more preferably to a temperature between 110° C. and 180° C., most preferred to a temperature of about 140° C. to 146° C., and an apparatus suitable therefore.
    • 为了提高现有技术工艺的能量效率,同时保持所需最终产品的质量和总产量的标准,提出了制备酚类化合物的方法。 本发明的方法包括通过蒸馏处理裂解产物混合物,其包括在单一蒸馏步骤中将裂解产物混合物分解成至少三个级分,通过将裂解产物混合物加入到蒸馏塔的侧面,除去 在蒸馏塔顶部包含酮的第一馏分,在蒸馏塔的底部除去包含酚类化合物的第二级分,并除去包含未反应的烷基芳基化合物和羟基酮的第三馏分和水作为侧流 ,由此侧流起飞位于裂解产物混合物的进料到蒸馏塔的上方,其特征在于从蒸馏塔除去热量,由此该热量取出位于第三馏分的侧流起飞之上 以及从裂解产物混合物中分离苯酚的方法,其中先前加入的裂解产物混合物 蒸馏塔在标准压力下预热至高于70℃的温度,优选至高于100℃的温度,更优选至110℃至180℃的温度,最优选为 温度为约140℃至146℃,因此适用的装置。