Reciprocating material turnover type rapid dehydration device for phthalate plasticizers

Abstract

The invention discloses a reciprocating material turnover type rapid dehydration device for phthalate plasticizers. The reciprocating material turnover type rapid dehydration device comprises a dehydration box, a centrifugal dehydration cylinder is arranged in the dehydration box, a plurality of air holes are uniformly formed in the surface of the centrifugal dehydration cylinder, and a rotating ring is fixedly connected to the middle of the surface of the centrifugal dehydration cylinder. Since a hollow body and a plurality of annular pipes arranged in a concentric mode are all provided withair holes, the centrifugal dehydration cylinder can be uniformly blown with hot air, the dehydration effect is good, and the dehydration is uniform. During the rotation of the centrifugal dehydrationcylinder, the orientation of the inclined lower end of the centrifugal dehydration cylinder is constantly changed, so that the phthalate plasticizers positioned in the centrifugal dehydration cylinderslide left and right in a reciprocating mode, the reciprocating material turnover effect is achieved on the phthalate plasticizers, and the dehydration uniformity of the phthalate plasticizers is further improved; and the problems that raw materials near the hot air end is dehydrated too much and raw materials far away from the hot air end is dehydrated too less in the prior art are avoided.

Description

technical field [0001] The invention relates to the technical field of plasticizer processing, in particular to a reciprocating turning type rapid dehydration device for phthalate plasticizers. Background technique [0002] Plasticizer is a polymer material additive widely used in industry. Adding this substance in plastic processing can make it more flexible, easy to process, and can be legally used for industrial purposes. Chinese manufacturers use a common plasticizer DEHP (later detected DINP, DNOP, DBP, DMP, DEP, etc.) instead of palm oil to prepare a clouding agent that can also produce a thickening effect similar to that of an emulsifier. [0003] In the production of phthalate plasticizers, the subsequent treatment, especially the dehydration process, has a great influence on the product color, thermal stability and other indicators. In the existing production process, the dehydration operation is mostly conventional distillation dehydration, and the material is deh...

AI Technical Summary

Problems solved by technology

In the existing production process, the dehydration operation is mostly conventional distillation dehydration, and the material is dehydrated under reduced pressure in the distillation kettle. Due to the long distillation time, the product color is light yellow to yellow, and prolonged heating will also cause some oil-soluble impurities to enter the finished product. , leading to poor thermal stability of the product, and it is easy to cause too much dehydration of raw materials near the hot air end and too little dehydration of raw materials far away from the hot air end

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