| 摘要 |
<p>1374623 Mixing SNIA VISCOSA SOC NAZIONALE INDUSTRIA APPLICAZION I VSCOSA SpA 21 Oct 1971 [12 Oct 1970] 49047/71 Heading B1C Apparatus, e.g. for forming a homogeneous paste from terephthalic acid and ethylene glycol as a stage in polyester production comprises a vessel 10, means 22, 24 for feeding metered quantities of the materials to be mixed into the vessel 10, mechanical mixing means 12, means 26 for continuously removing the paste, and heat removing means for limiting the mixing temperature to not above 50‹C. The mixing means 12 may comprise vertical blades 12' driven by a motor 14, cooling water, e.g. at 15‹C being circulated through a jacket 16 with an inlet 18 and outlet 20. The paste, removed by a valve 26 and pump 28 may be recirculated through conduits 30, 32, 34 provided with sampling means 38, while pumps 42, 44 provided with valves 46, 48 control flow through a duct 50, e.g. to an esterification reactor.</p> |
