阅读说明：本技术 用于从蒸馏残余物中回收二异氰酸酯的方法 (Process for recovering diisocyanates from distillation residues ) 是由 J·莫拉夫斯基 T·洛登肯佩尔 S·朗格 R·贝林豪森 U·利森费尔德 M·默克尔 M· 于 2019-04-03 设计创作，主要内容包括：本发明涉及用于从蒸馏残余物中回收在室温下为固体的单体二异氰酸酯的方法,所述方法包括以下步骤：(i)提供至少一种包含在室温下为固体的二异氰酸酯的残余物,和(ii)在基于步骤(i)中提供的残余物的质量计小于2重量％的沥青的存在下,在至少一个捏合干燥器、叶片式干燥器和/或辊筒式干燥器中将所述残余物分离成包含在室温下为固体的单体二异氰酸酯的气态部分和贫化了在室温下为固体的二异氰酸酯的脆性残余物。(The present invention relates to a process for recovering monomeric diisocyanates that are solid at room temperature from distillation residues, said process comprising the steps of: (i) providing at least one residue comprising a diisocyanate that is solid at room temperature, and (ii) separating the residue in at least one kneading dryer, blade dryer and/or drum dryer in the presence of less than 2% by weight of bitumen, based on the mass of the residue provided in step (i), into a gaseous fraction comprising monomeric diisocyanate that is solid at room temperature and a brittle residue depleted of diisocyanate that is solid at room temperature.)