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    • 91. 发明授权
    • Removal of salts in the manufacture of phenolic compound
    • 去除酚类化合物制造中的盐
    • US06720461B2
    • 2004-04-13
    • US09728275
    • 2000-12-01
    • Austin Dale Taggart, IIEdgar Donald AllanRoberto Carlos LongoriaDavid Werner DaumRobert Lawrence Blackbourn
    • Austin Dale Taggart, IIEdgar Donald AllanRoberto Carlos LongoriaDavid Werner DaumRobert Lawrence Blackbourn
    • C07C3768
    • C07C37/685C07C37/08C07C39/04
    • There is provided a process for the manufacture of phenolic compounds by separating a neutralized aralkyl hydroperoxide cleavage mass stream containing salts of neutralization into a crude ketone stream and a crude phenolic stream containing the salts of neutralization; separating the crude phenolic stream into a concentrated phenolic-rich stream, enriched in phenolic compounds, and a crude phenolic bottoms stream enriched in tars and alpha methyl styrene dimers, each compared to the crude phenolic stream, said crude phenolic bottoms stream containing salts of neutralization; to the crude phenolic bottoms stream, adding water and a diluent composition, thereby forming a phase separable crude phenolic bottoms stream, said diluent composition comprised of hydrocarbons phase compatible with the crude phenolic bottoms stream and having a combined density lower than the density of the crude phenolic bottoms stream; separating the separable crude phenolic bottoms stream into a hydrocarbon phase and an aqueous phase containing salts of neutralization; whereby the amount of salts of neutralization in the hydrocarbon phase is reduced compared to the amount of salts of neutralization present prior to separation.
    • 提供了一种通过将含有中和盐的中和的芳烷基氢过氧化物切割质量流分离成粗酮物流和含有中和盐的粗酚物流来制备酚类化合物的方法; 将粗酚流分离成富含酚类化合物的富含浓酚的料流,以及富含焦油和α-甲基苯乙烯二聚体的粗酚底物流,其与粗酚流相比,所述粗酚底物流含有中和盐 ; 加入水和稀释剂组合物,从而形成可分离的粗酚底物流,所述稀释剂组合物由与粗酚底物流相容的烃相组成,并且具有低于粗制酚底物流密度的组合密度 酚底物流; 将可分离的粗酚底物流分离成烃相和含有中和盐的水相; 由此与分离前存在的中和盐的量相比,烃相中的中和盐的量减少。
    • 94. 发明授权
    • Process for preparing phenols
    • 酚类制备方法
    • US06630608B2
    • 2003-10-07
    • US10090475
    • 2002-03-04
    • Uwe TangerReinhard SiggSiegmund GreschekManfred Weber
    • Uwe TangerReinhard SiggSiegmund GreschekManfred Weber
    • C07C3768
    • C07C37/08C07C39/04
    • The present invention relates to a process for preparing phenols, in which the pH of the reaction product from the acid-catalyzed cleavage of alkylaryl hydroperoxides is set to a value of at least 8 at a temperature of at least 100° C. prior to the work-up of the product. This measure enables the content of undesirable by-products, e.g. hydroxyacetone, in the cleavage product to be significantly reduced. This procedure is particularly advantageously integrated into a process for preparing phenols by: a) acid-catalyzed cleavage of alkylaryl hydroperoxides and b) thermal after-treatment of the cleavage product from step a), with the temperature in step b) being higher than in step a) and is at least 100° C., wherein the adjustment to a pH of at least 8 is carried out after the thermal after-treatment and prior to cooling of the cleavage product.
    • 本发明涉及一种制备酚的方法,其中来自烷基芳基氢过氧化物的酸催化裂解的反应产物的pH在至少100℃的温度之前设定为至少8的值 产品的后处理。 该措施使得不期望的副产物的含量,例如 羟基丙酮,在裂解产物中显着降低。 该方法特别有利地整合到通过以下步骤制备酚的方法中:a)烷基芳基氢过氧化物的酸催化裂解和b)来自步骤a)的裂解产物的热后处理,步骤b)中的温度高于步骤 a)并且至少为100℃,其中调节至少8的pH在热后处理之后和在冷却切割产物之前进行。