Polyester polyols continuous production unit

The utility model discloses a polyester polyols continuous production unit. The device includes thick liquids allotment jar, slurry transferring jar, esterifying kettle, polycondensation falling -film tower, the condensing tower is established at the esterifying kettle top, polycondensation falling -film tower and vacuum gas lift union coupling. The raw materials polyhydric alcohol carries out continuous production with binary acid or acid anhydride through above -mentioned continuous production unit and obtains the polyester polyols product, and this production technology is including stage of esterifying and polycondensation stage, the stage of esterifying: directly heat up to 200 from the room temperature 245 DEG C, add the catalyst, constant temperature 0.5 get into the polycondensation stage after 1.5h, the polycondensation stage: with the vacuum primary governor control to getting together required vacuum 1000 5000Pa, the polymerization 1.5 2.5h. The utility model discloses a continuous production unit