阅读说明：本技术 含钠盐的mma-甲醇混合物的提取处理 (Extraction treatment of MMA-methanol mixture containing sodium salt ) 是由 M·格罗姆皮恩格 S·克里尔 A·黎金 M·卢基科 S·芬格尔 于 2016-09-14 设计创作，主要内容包括：本发明涉及一种用于通过直接氧化酯化甲基丙烯醛来制备甲基丙烯酸甲酯的方法。甲基丙烯酸甲酯大量用于制备与其他可聚合化合物的聚合物和共聚物。另外,甲基丙烯酸甲酯是用于各种基于甲基丙烯酸(MAS)的特殊酯的重要构造单元,所述特殊酯能够通过与对应的醇的酯交换来制备。由此对这种起始材料的尽可能简单经济且环保的制备方法存在很大兴趣。本发明尤其涉及对氧化酯化甲基丙烯醛的反应器出料的经优化的处理,借助于该处理能够最大程度减少工艺排出流并且能够以最优的方式再循环工艺水。此外,最优地回收并同时分离在工艺中产生的丙烯酸或将其转化为丙烯酸烷基酯的有价值材料。此外,此方法的优点是,在设备的装置设计方面需要提出的要求比现有技术中的更少。(The invention relates to a method for producing methyl methacrylate by direct oxidative esterification of methacrolein. Methyl methacrylate is used in large quantities for the preparation of polymers and copolymers with other polymerizable compounds. In addition, methyl methacrylate is an important building block for various special esters based on Methacrylic Acid (MAS), which can be prepared by transesterification with the corresponding alcohol. There is thus great interest in a process for the preparation of this starting material which is as simple, economical and environmentally friendly as possible. The invention relates in particular to an optimized treatment of the reactor output of an oxidative esterification of methacrolein, by means of which the process discharge stream can be minimized and the process water can be recycled in an optimum manner. Furthermore, the valuable materials of acrylic acid produced in the process or its conversion into alkyl acrylates are optimally recovered and simultaneously separated. Furthermore, this method has the advantage that fewer requirements need to be made in the design of the device of the apparatus than in the prior art.)