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    • 6. 发明授权
    • Reaction of a solution comprising a mixture
    • 包含混合物的溶液的反应
    • US06610888B1
    • 2003-08-26
    • US09583290
    • 2000-05-31
    • Eckhard StröferStephan SchollHans Hasse
    • Eckhard StröferStephan SchollHans Hasse
    • C07C21100
    • C07C45/82C07B63/00C07C29/80C07C47/04C07C31/22C07C31/20
    • A method of reacting a solution comprising a mixture of chemical compounds which are in chemical equilibrium with one another with at least one further chemical compound (9) is provided. The method comprises the following steps: fractionation of the solution by means of a separation method to give at least two fractions (5, 6) which are enriched in different chemical compounds of the mixture; and reaction of a fraction (5) with the further chemical compound or compounds (9). The fractionation is advantageously carried out using a film evaporator (1). Unreacted fractions (6) can be recirculated via a residence time vessel (3) back to the fractionation step. The method is particularly suitable for reactions of an aqueous formaldehyde solution in which various components of the solution (formaldehyde, methylene glycol, polyoxymethylene glycols) react in different ways.
    • 提供了使包含与化学平衡化学平衡的化合物的混合物的溶液与至少一种其它化合物(9)反应的方法。 该方法包括以下步骤:通过分离方法对溶液进行分级,得到富含混合物不同化合物的至少两个级分(5,6); 以及级分(5)与其它化合物或化合物(9)的反应。 有利的是使用薄膜蒸发器(1)进行分馏。 未反应的馏分(6)可以通过停留时间容器(3)再循环回分馏步骤。 该方法特别适合甲醛水溶液的反应,其中溶液的各种组分(甲醛,亚甲基二醇,聚氧化亚甲基二醇)以不同的方式反应。