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    • 72. 发明授权
    • Preparation of phthalic anhydride by gas phase oxidation of o-xylene
    • 通过邻二甲苯的气相氧化制备邻苯二甲酸酐
    • US08153825B2
    • 2012-04-10
    • US12301352
    • 2007-05-18
    • Thomas MackewitzFrank RosowskiAndreas Tenten
    • Thomas MackewitzFrank RosowskiAndreas Tenten
    • C07D307/89
    • C07D307/89C07C51/265C07C63/16
    • A process is described for preparing phthalic anhydride by catalytic gas phase oxidation of o-xylene, in, in a main reactor, a gaseous mixture of o-xylene and an oxygenous gas is passed through at least two reaction zones whose temperature can be controlled independently, and converted to a gaseous intermediate reaction product which comprises unconverted o-xylene, phthalic anhydride underoxidation products and phthalic anhydride, and the intermediate reaction product is introduced into a postreactor, wherein the temperature of the reaction zones in the main reactor is regulated in such a way that the concentration of unconverted o-xylene in the intermediate reaction product is at least 0.5% by weight. The process allows an increase in the overall yield of phthalic anhydride without or without significant deterioration in the product quality.
    • 描述了通过邻二甲苯的催化气相氧化制备邻苯二甲酸酐的方法,在主反应器中,邻二甲苯和氧气的气态混合物通过至少两个温度可独立控制的反应区 并转化为包含未转化的邻二甲苯,邻苯二甲酸酐未氧化产物和邻苯二甲酸酐的气态中间反应产物,将中间反应产物引入后反应器中,其中主反应器中的反应区的温度如此调节 在中间反应产物中未转化的邻二甲苯的浓度为至少0.5重量%的方式。 该方法允许邻苯二甲酸酐的总产率提高,而不会产生质量的显着劣化。
    • 80. 发明申请
    • Mehtod for the production of a catalyst for gas-phase oxidations by the coating of support materials in a fluid bed apparatus
    • Mehtod用于通过在流化床装置中涂覆支撑材料来生产用于气相氧化的催化剂
    • US20070135302A1
    • 2007-06-14
    • US10573480
    • 2004-09-24
    • Samuel NetoWolfgang RummelSebastien StorckJurgen ZuhlkeFrank Rosowski
    • Samuel NetoWolfgang RummelSebastien StorckJurgen ZuhlkeFrank Rosowski
    • B01J23/00
    • B01J2/16B01J2/006B01J23/22B01J35/0006B01J35/002B01J35/1014B01J37/0009B01J37/0221B01J37/0232B01J37/0244
    • The invention relates to a process for producing a catalyst for gas-phase oxidations, which comprises weighing a particulate inert support having a total mass of Msupport into a fluidized-bed apparatus, providing an aqueous suspension of a catalytically active material or sources therefor and a binder having a binder content of Bsusp, fluidizing the inert support by introduction of a gas stream heated to a temperature of Tgas at a flow rate of Qgas, and spraying the suspension at a rate of Qsusp onto the fluidized inert support. When Qgas, Qsusp, Bsusp, Msupport and Tgas are selected within the ranges 3000≦Qgas [m3/h]≦9000, 1000≦Qsusp [g/min]≦3500, 2≦Bsusp [% by weight]≦18, 60≦Msupport [kg]≦240. 75≦Tgas [° C.]≦120 so that a parameter K defined as K=0.020 Qgas−0.055 Qsusp+7.500 Bsusp−0.667 Msupport+2.069 Tgas−7satisfies the relationship 127.5≦K≦202, high-quality coatings can be produced and the formation of twins made up of support particles adhering to one another can be avoided.
    • 本发明涉及一种用于生产气相氧化催化剂的方法,该方法包括将具有总质量的载体的颗粒惰性载体称重到流化床装置中,提供水悬浮液 催化活性材料或其来源以及具有粘合剂含量为B susp susp susp susp susp a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a Q气体的流速,并以悬浮液的速度将悬浮液喷雾到流化的惰性载体上。 当气体气体时,Q 1,B 2,B 3,M 3,N 2, 在3000以下范围内选择气体[m 3 / h] <= 9000,1000 <= Q [g / min ] <= 3500,2 <= B [重量%] <= 18,60 <= M [kg] = 240。 75 <= T [°C] <= 120,使得定义为<?in-line-formula description =“In-Line Formulas”end =“lead”?> K = 0.020 Q气体-0.055 Q + +7.500 B&lt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 气体-7 <?在线公式描述=“在线公式”end =“tail”?>满足关系127.5 <= K <= 202,可以生产高品质涂层并形成 可以避免由彼此粘附的支撑颗粒构成的双胞胎。