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    • 52. 发明授权
    • Co-production of dialkyl carbonates and diols with treatment of hydroxy alkyl carbonate
    • 与碳酸二烷基酯和二醇共同生产碳酸羟基烷基酯
    • US06573396B2
    • 2003-06-03
    • US09976608
    • 2001-10-12
    • J. Scott BuchananJose G. SantiestebanZhaozhong Jiang
    • J. Scott BuchananJose G. SantiestebanZhaozhong Jiang
    • C07C6996
    • C07C68/065Y02P20/127C07C69/96
    • A process for the production of a dialkyl carbonate and a diol from a cyclic carbonate and an aliphatic monohydric alcohol wherein the cyclic carbonate and aliphatic monohydric alcohol are reacted in the presence of a transesterification catalyst to form a crude product stream which contains a dialkyl carbonate, a diol, a hydroxy alkyl carbonate, which is formed as an intermediate of the two step transesterification reaction, unreacted aliphatic monohydric alcohol and unreacted cyclic carbonate. The dialkyl carbonate and unreacted aliphatic monohydric alcohol are separated from the crude product stream and then the hydroxy alkyl carbonate is diminished, reduced or eliminated from the crude product stream, prior to the separation and purification steps needed to recover the diol, resulting in improved yields and product purity.
    • 一种由环状碳酸酯和脂族一元醇生产碳酸二烷基酯和二醇的方法,其中环状碳酸酯和脂肪族一元醇在酯交换催化剂的存在下反应,形成含有碳酸二烷基酯的粗产物流, 作为两步酯交换反应的中间体形成的二醇,羟基烷基碳酸酯,未反应的脂肪族一元醇和未反应的环状碳酸酯。 将碳酸二烷基酯和未反应的脂肪族一元醇与粗产物流分离,然后在回收二醇所需的分离和纯化步骤之前,从粗产物流中减少,还原或消除羟基烷基碳酸酯,从而提高产率 和产品纯度。
    • 56. 发明授权
    • Process for BTX purification
    • BTX纯化方法
    • US06500996B1
    • 2002-12-31
    • US09428762
    • 1999-10-28
    • Stephen H. BrownTarun K. ChaudhuriJose G. Santiesteban
    • Stephen H. BrownTarun K. ChaudhuriJose G. Santiesteban
    • C07C266
    • C10G69/08C10G59/02C10G61/02
    • A process for the removal of hydrocarbon contaminants, such as dienes and olefins, from an aromatics reformate by contacting an aromatics reformate stream with a hydrotreating catalyst and/or a molecular sieve. The hydrotreating catalyst substantially converts all dienes to oligomers and partially converts olefins to alkylaromatics. The molecular sieve converts the olefins to alkylaromatics. The process provides an olefin depleted product which can be passed through a clay treater to substantially convert the remaining olefins to alkylaromatics. The hydrotreating catalyst has a metal component of nickel, cobalt, chromium, vanadium, molybdenum, tungsten, nickel-molybdenum, cobalt-nickel-molybdenum, nickel-tungsten, cobalt-molybdenum or nickel-tungsten-titanium, with a nickel molybdenum/alumina catalyst being preferred. The molecular sieve is an intermediate pore size zeolite, preferably MCM-22. The clay treatment can be carried out with any clay suitable for treating hydrocarbons.
    • 通过使芳族化合物重整产物流与加氢处理催化剂和/或分子筛接触,从芳族化合物重整产物中除去烃类污染物如二烯和烯烃的方法。 加氢处理催化剂基本上将所有二烯转化为低聚物并将烯烃部分转化为烷基芳族化合物。 分子筛将烯烃转化为烷基芳族化合物。 该方法提供烯烃消耗产物,其可以通过粘土处理器以将剩余的烯烃基本上转化为烷基芳族化合物。 加氢处理催化剂具有镍,钴,铬,钒,钼,钨,镍 - 钼,钴 - 镍 - 钼,镍 - 钨,钴 - 钼或镍 - 钨 - 钛的金属组分和镍钼/氧化铝 催化剂是优选的。 分子筛是中等孔径的沸石,优选MCM-22。 粘土处理可以用适合于处理碳氢化合物的任何粘土进行。
    • 58. 发明授权
    • Production of phenol using reactive distillation
    • 使用反应蒸馏生产苯酚
    • US06410804B1
    • 2002-06-25
    • US09468465
    • 1999-12-21
    • Doron LevinJose G. Santiesteban
    • Doron LevinJose G. Santiesteban
    • C07C3708
    • C07C37/08C07C45/53Y02P20/127Y10S203/06C07C49/08C07C39/04
    • A process for producing phenol and acetone from cumene hydroperoxide comprises: i) introducing a cumene hydroperoxide feed into a reactive distillation column comprising at its upper portion a distillation column and at its lower portion a catalyst bed, at a point above said catalyst bed; ii) mixing a diluting portion of acetone with said cumene hydroperoxide to provide a diluted cumene hydroperoxide; iii) directing said diluted cumene hydroperoxide through said catalyst bed under conditions sufficient to effect the exothermic decomposition of said cumene hydroperoxide to a product comprising a heavy fraction comprising phenol and a vaporized light fraction comprising acetone; iv) withdrawing said heavy fraction as bottoms from said column; v) flowing said vaporized light fraction upwards through the catalyst bed and at least a portion of the reactive distillation column; vi) condensing said light fraction to provide at least a portion of said diluting portion of acetone for subsequent mixing with said cumene hydroperoxide feed; vii) optionally withdrawing a portion of said light fraction as overhead from said column; and viii) repeating steps i) through vii). An apparatus for carrying out the process is also provided.
    • 从氢过氧化枯烯生产苯酚和丙酮的方法包括:i)将氢过氧化枯烯进料引入反应性蒸馏塔,反应蒸馏塔在其上部包含蒸馏塔,其下部在催化剂床的上方加入催化剂床; ii 将丙酮的稀释部分与所述异丙基氢过氧化物混合以提供稀释的氢过氧化枯烯; iii)在足以使所述异丙基氢过氧化氢发生放热分解的产物的条件下将所述稀释的氢过氧化枯烯引导通过所述催化剂床,所述产物包含含有苯酚 以及包含丙酮的气化轻馏分; iv)从所述塔中抽出所述重馏分作为塔底物; v)使所述蒸发的轻馏分向上通过催化剂床和至少一部分反应蒸馏塔; vi)将所述轻馏分冷凝至 提供所述丙稀稀释部分的至少一部分用于随后的混合物 g用所述异丙基氢过氧化物进料; vii)任选地将所述轻馏分的一部分从塔中取出; 和viii)重复步骤i)至vii)。 还提供了一种用于执行该过程的装置。