公开(公告)号：US4220597A

公开(公告)日：1980-09-02

申请号：US6402

申请日：1979-01-25

申请人： Kurt Halcourt ,  Paul Losacker ,  Manfred Martin ,  Norbert Schenk ,  Wulf Schwerdtel

发明人： Kurt Halcourt ,  Paul Losacker ,  Manfred Martin ,  Norbert Schenk ,  Wulf Schwerdtel

IPC分类号： C07C50/18 ,  C07C45/00 ,  C07C46/02 ,  C07C46/04 ,  C07C51/31 ,  C07C67/00 ,  C07C49/68

CPC分类号： C07C46/04 ,  C07C46/02 ,  C07C51/313

摘要： A process has been found for the preparation of anthraquinone by catalytic oxidation of naphthalene in the gas phase to provide a reaction product, obtained by quenching, cooling or quenching and cooling, containing naphthaquinone and phthalic anhydride, treating said reaction product directly with butadiene to provide tetrahydroanthraquinone, oxidation by means of molecular oxygen to the tetrahydroanthraquinone contained in this reaction product, to give anthraquinone, and separation of naphthalene, phthalic anhydride, anthraquinone and by-products by distillation, the gases produced in the quenching and/or cooling of the gases from the naphthalene oxidation and the gases from the oxidation of the tetrahydroanthraquinone to give anthraquinone being completely or partially recycled to the oxidation of naphthalene, in which a compound with an alkaline reaction is introduced between the reactor in which naphthalene is oxidized and the reactor in which the reaction with butadiene takes place, and/or into the gas streams which are recycled to the oxidation of naphthalene.The process of the invention reduces considerably the formation of higher-boiling products formed in the continuous preparation of anthraquinone from naphthalene and increases the selectivity of the conversion of naphthalene to anthraquinone. In addition, the process of the invention provides greater freedom in separation of the reaction products since the production of troublesome high-boilers is minimized; and the process results in a reduced formation of carbon dioxide in the oxidation of naphthalene.

摘要翻译： 已经发现通过在气相中催化氧化萘来制备蒽醌的方法，以提供含有萘醌和邻苯二甲酸酐的淬火，冷却或冷却或冷却获得的反应产物，直接用丁二烯处理所述反应产物以提供 四氢蒽醌，通过分子氧氧化成该反应产物中所含的四氢蒽醌，得到蒽醌，并通过蒸馏分离萘，邻苯二甲酸酐，蒽醌和副产物，在气体的淬火和/或冷却中产生的气体 从萘氧化和四氢蒽醌氧化的气体中得到蒽醌被完全或部分地再循环到萘的氧化中，其中将具有碱性反应的化合物引入萘被氧化的反应器中，其中反应器 与丁二烯的反应需要 ace和/或进入再循环到萘的氧化的气流中。 本发明的方法显着降低了从萘中连续制备蒽醌形成的较高沸点产物，并提高了萘转化为蒽醌的选择性。 此外，本发明的方法提供了更大的反应产物分离自由度，因为生产麻烦的高锅炉最小化; 并且该过程导致萘氧化中二氧化碳的形成减少。