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    • 4. 发明申请
    • METHOD FOR PRODUCING MALEIC ANHYDRIDE
    • 制备马来酸酐的方法
    • WO2004014833A2
    • 2004-02-19
    • PCT/EP0307982
    • 2003-07-22
    • BASF AGWEIGUNY JENSRUPPEL WILHELMDUDA MARK
    • WEIGUNY JENSRUPPEL WILHELMDUDA MARK
    • C07B61/00C07D307/60C07C51/00
    • C07D307/60
    • The invention relates to a method for producing maleic anhydride by the heterogeneous catalytic gas phase oxidation of hydrocarbons comprising at least four carbon atoms with gases containing oxygen, in the presence of a volatile phosphorus compound, on a catalyst containing vanadium, phosphor and oxygen in a multitube flow reactor unit with at least one reaction zone that is cooled by a heat-transfer medium, at a temperature ranging between 350 and 500 °C. In the first reaction zone, in relation to the educt supply, the supply temperature and/or the supply quantity is set in such a way that the average temperature of the heat transfer medium in the first reaction zone TSB(1st zone), said temperature being produced by the average value formation of the supply temperature and the drainage temperature of the heat-transfer medium, fulfils the formulas (I) and (II): (I) TSB(1st zone)
    • 一种用于通过具有在挥发性含磷化合物的催化剂在具有钒,磷和氧在管束反应器单元的至少一个的温度在所述范围由载热介质的反应区中冷却的存在下与含氧气体的至少四个碳原子的烃的非均相催化气相氧化制备马来酸酐的方法 从350至500℃,其中,在其中进料的温度和/或载热介质的供给量相对于被调节到反应物供应,在第一反应区,使得在第一反应区TSB载热介质的平均温度(第一区 ),其通过平均入口温度和载热介质的流动温度,式(I)和(II)得到的:TSB(第一区)<= TD(1个区) - TSafety(1个区)(I)... ; TSB,λ最大(1个区) - TA <= TSB(第一区)<= TSB,λ最大+ TB(II)被满足,其中TD(1(1区)(1个区)(1个区)。。。。 用于第一反应区的通过温度; TSafety(第一区)代表第一反应区的安全温度,为1°C; (1个区)TSB,λ最大是在第一反应区中的载热介质,其中,在TSB(第一区)的范围内的平均温度<= TD最大产率在马来酸酐实现。(1个区); TA(第一区)为20°C; 和TB(第一区)是10℃