Wiped film distiller

Abstract

The invention relates to a wiped film distiller which comprises a barrel. A feeding inlet, a light phase outlet, a heavy phase outlet and a vacuum port are opened on the barrel respectively, a heating jacket is arranged on the periphery of the barrel, and a heating medium inlet pipe and a heating medium outlet pipe are distributed on the heating jacket respectively; a stirring driving mechanism is installed at one end of the barrel, the stirring driving mechanism extends into the barrel to be connected with one end of a rotation shaft, the other end of the rotation shaft penetrates through a distributing device and is connected with a sliding fixing bearing, and the sliding fixing bearing is installed on a supporting plate; a stirring film forming device is installed on the periphery of the rotation shaft and located on the lower portion of the distributing device; and an inner guiding barrel is installed on the supporting plate and located on the upper portion of the distributing device, an outer guiding barrel is sleeved on the periphery of the inner guiding barrel, a condensing coil is arranged between the inner guiding barrel and the outer guiding barrel, and a cold medium inlet and a cold medium outlet are opened on the outer guiding barrel. The wiped film distiller is simple in structure and convenient to install and is provided with rectifying and filling functions so that purity and colors of products after rectifying are greatly improved.

Description

technical field [0001] The invention relates to a distiller, in particular to a wiped film distiller with rectification function. Background technique [0002] In the prior art, the function of the thin-film evaporator is that the material liquid flows along the heating tube wall in a film shape to conduct heat transfer and evaporation. The advantages are high heat transfer efficiency, fast evaporation speed, and short residence time of the material, so it is especially suitable for heat-sensitive substances. evaporation. However, due to the long journey of the vapor phase, the operating vacuum on the surface of the evaporation membrane is low (compared with the short-path still), and a higher separation temperature is required for the separation of boiling point mixtures under normal pressure, which is easy to cause carbonization and coking of materials, etc. situation is very limited. [0003] Since the operating vacuum of the short-path distiller is much higher than tha...

AI Technical Summary

Problems solved by technology

However, due to the long journey of the vapor phase, the operating vacuum on the surface of the evaporation membrane is low (compared with the short-path still), and a higher separation temperature is required for the separation of boiling point mixtures under normal pressure, which is easy to cause carbonization and coking of materials, etc. situation, very limited

[0003] Since the operating vacuum of the short path distiller is much higher than that of the scraped film evaporator, it has great advantages for the separation of high boiling point mixtures. Foam entrainment; and due to the short journey of the vapor phase, there is almost no effect of vapor-liquid separation, so a small amount of high boiling substances will be entrained in the light phase material, resulting in too dark color or low purity of the product

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