公开(公告)号：US4595461A

公开(公告)日：1986-06-17

申请号：US599089

申请日：1984-04-11

申请人： Lutz Jeromin ,  Wilhelm Johannisbauer ,  Klaus Thorausch ,  Franjo Skrapac ,  Helmut Hartmann ,  Karl Hentschel ,  Otto Michel

发明人： Lutz Jeromin ,  Wilhelm Johannisbauer ,  Klaus Thorausch ,  Franjo Skrapac ,  Helmut Hartmann ,  Karl Hentschel ,  Otto Michel

IPC分类号： C07C53/126 ,  C07C51/00 ,  C07C51/44 ,  C07C67/00 ,  C11C1/10 ,  B01D1/22 ,  B01D3/38 ,  C11C1/08

CPC分类号： C07C51/445 ,  C07C51/44 ,  Y10S203/16 ,  Y10S203/20 ,  Y10S203/90

摘要： A process for the nondegenerative distillation of C.sub.6 -C.sub.24 -fatty acids, of the type obtained by splitting natural fats and oils or by synthetic processes, such as for example the oxidation of paraffins, the crude product is thermally dried under reduced pressure, the dried and heated crude product is subjected to fractional evaporation in falling-film evaporators, optionally in the presence of superheated steam, and the various vapor fractions are deposited in condensers. The thermal drying process is conducted at a temperature of 60.degree.-80.degree. C. and a pressure of 90-100 mbars. The de-watered crude product is fractionated in a film-forming evaporator and, after distillation, passes to a rectification column which condenses the low boiling constituents as the main runnings.

摘要翻译： 通过分离天然脂肪和油或通过合成方法（例如石蜡氧化）得到的类型的C 6 -C 24脂肪酸的非退化蒸馏方法，粗产物在减压下热干燥，干燥 并且加热的粗产物在降膜蒸发器中任选地在过热蒸汽的存在下进行分级蒸发，并且各种蒸气馏分沉积在冷凝器中。 热干燥过程在60-80℃的温度和90-100mbar的压力下进行。 脱水的粗产物在成膜蒸发器中分馏，并在蒸馏之后进入精馏塔，其将低沸点组分作为主要流路冷凝。