Crystal cooling device for preparing 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide

The utility model discloses a crystal cooling device for preparing 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, which relates to the technical field of DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) preparation, and comprises a reaction kettle, a feed port arranged on the side upper wall of the reaction kettle and a discharge port arranged at the bottom of the reaction kettle, a stirring part is arranged in the reaction kettle, and a cooling assembly for cooling materials is also arranged in the reaction kettle. According to the reaction kettle disclosed by the utility model, materials in the reaction kettle can be cooled while being uniformly stirred through the reaction kettle and the stirring component and the cooling assembly which are matched for use, so that the crystallization speed of the materials is increased, and the materials can be cooled more efficiently and uniformly through the cooling plate; local cooling of materials is avoided, and crystallization quality is improved. 本实