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    • 3. 发明授权
    • Integrated process for the preparation of phenol from benzene with recycling of the by-products
    • 从苯中制备苯酚的副产物回收综合工艺
    • US07038093B2
    • 2006-05-02
    • US10716460
    • 2003-11-20
    • Daniele BianchiRossella BortoloRoberto BuzzoniAlberto CesanaLeonardo DalloroRino D'Aloisio
    • Daniele BianchiRossella BortoloRoberto BuzzoniAlberto CesanaLeonardo DalloroRino D'Aloisio
    • C07C37/00
    • C07C37/60B01J29/89B01J2229/30Y02P20/125Y02P20/52C07C39/04
    • The invention relates to a process for the preparation of phenol comprising the following phases: 1) preparation in continuous of phenol by means of the direct oxidation of benzene with hydrogen peroxide operating with an H2O2/benzene ratio ranging from 10 to 70%, in a three-phase reaction system comprising a first liquid phase consisting of benzene and an organic solvent, a second liquid phase consisting of water, a solid phase consisting of an activated catalyst based on titanium silicalite TS-1; 2) separation of the phenol and non-reacted benzene from the reaction mixture of the oxidation section (1), by means of fractionated distillation; 3) separation of the solvent and by-products from the mixture coming from the distillation tail (2), by means of basic extraction; 4) transformation of the by-products obtain in section (3) to phenol by means of hydrodeoxygenation with hydrogen operating in continuous, in aqueous solution, at a temperature ranging from 250 to 500° C., at pressures of 1-100 bar and in the presence of a catalyst based on elements of group VIB or their mixtures or group VIII of the periodic table or their mixtures; 5) recycling of the phenol obtained in section (4) to the distillation section (2).
    • 本发明涉及一种制备苯酚的方法,包括以下阶段:1)通过苯与氧化氢的直接氧化制备苯酚连续操作,所述过氧化氢用H 2 O 2 在含有由苯和有机溶剂组成的第一液相的三相反应体系中,第二液相由水组成,固相由活化的 基于钛硅沸石TS-1的催化剂; 2)通过分级蒸馏从氧化段(1)的反应混合物中分离苯酚和未反应的苯; 3)通过碱性萃取法从蒸馏尾料(2)中分离出溶剂和副产物与混合物; 4)将第(3)部分获得的副产物转化为苯酚,通过加氢脱氧,氢气在连续的水溶液中,在250-500℃的温度,1-100巴的压力和 在基于元素周期表VIB族元素或它们的混合物或VIII族元素或其混合物的催化剂的存在下; 5)将第(4)节中得到的酚再循环至蒸馏段(2)。
    • 7. 发明授权
    • Continuous process for the preparation of phenol from benzene in a fixed bed reactor
    • 在固定床反应器中从苯制备苯酚的连续方法
    • US07759529B2
    • 2010-07-20
    • US11575579
    • 2005-10-26
    • Daniele BianchiRossella BortoloChiara BustoCarla Lazzari
    • Daniele BianchiRossella BortoloChiara BustoCarla Lazzari
    • C07C29/14
    • B01J37/12B01J29/89B01J37/0009B01J2229/30B01J2229/42C07C37/60Y02P20/52C07C39/04
    • The invention relates to a continuous process for the preparation of phenol by means of the direct oxidation of benzene with hydrogen peroxide in the presence of a catalyst based on titanium silicalite TS-1 comprising: (a) running the process in a fixed bed reactor containing the catalyst based on TS-1 at a temperature ranging from 80-120° C. and at a pressure ranging from 3-15 atm; (b) feeding to the reactor a stream containing H2O2, benzene, sulfolane and water in a single or double phase, wherein the quantities of the single components are within the range of 0.2-6, 15-60, 30-80, 0.5-30 parts by weight, respectively, for every 100 units fed and whose total flow rate is calculated so that the residence time in the reactor (defined as the ratio between the quantity of catalyst by weight and the feeding flow rate) ranges from 0.3 to 2 min; (c) recovery of the products, by-products and solvent from the liquid stream leaving the reactor.
    • 本发明涉及一种通过在基于钛硅沸石TS-1的催化剂存在下用过氧化氢直接氧化苯的连续方法,其包括:(a)在含有 催化剂基于TS-1,温度范围为80-120℃,压力范围为3-15atm; (b)在单相或双相中向反应器中加入含有H 2 O 2,苯,环丁砜和水的流,其中单一组分的量在0.2-6,15-60,30-80,0.5- 对于每100个单位进料,分别计算30重量份,并且其总流速被计算为使得在反应器中的停留时间(定义为催化剂的重量比和进料流量之间的比率)为0.3-2 分钟 (c)从离开反应器的液体流中回收产物,副产物和溶剂。