Horizontal homotaxial self-cleaning film evaporator

Abstract

The invention discloses a horizontal homotaxial self-cleaning film evaporator which comprises a barrel. A hollow principle axle is transversely arranged in the inner cavity of the barrel, a pluralityof inner scrapers which are arranged spirally and edge wall outer scrapers which are sequenced spirally are axially distributed on the hollow principle axle in the barrel, the inner scrapers and the edge wall outer scrapers are spaced separately, a plurality of axially and parallelly distributed fixed scrapers are arranged on one side, two sides or a plurality of sides of the inner wall of the barrel, one or more fixed scrapers in a same radial section in the barrel are located between the inner scraper and the edge wall outer scraper, the fixed scrapers are connected to the inner wall of thebarrel through handles, the inner scrapers are connected to the outer wall of the hollow principle axle through paddle plates, and the edge wall outer scrapers are connected to the outer wall of the hollow principle axle through hollow paddle plates. The horizontal homotaxial self-cleaning film evaporator solves the problem that the unit volume heat exchange area is small, and the heat exchange area is increased according to mutual connecting and position relationships of the inner scrapers, the edge wall outer scrapers, the fixed scrapers, the paddle plates and the paddle plates.

Description

technical field [0001] The invention relates to a fluid treatment device, in particular to a horizontal single-shaft self-cleaning film evaporator. Background technique [0002] For the high-viscosity fluid evaporation concentration, devolatilization, and defoaming process, the traditional method is to process it in equipment such as a strip-type devolatilization kettle and a vertical scraper-type thin-film evaporator. With the volatilization of volatile components in the product and the reduction of the amount of residual monomers, the viscosity of the product gradually increases, and it becomes more and more difficult to remove the solvent and defoam. Therefore, the whole process of this equipment is carried out under high vacuum to reduce the partial pressure of volatile components in the gas phase as much as possible. In order to increase the production capacity, increasing the specific surface area of ​​the melt and increasing the surface renewal rate, and then increas...

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Problems solved by technology

It is also suitable for the treatment of medium and low viscosity materials. If the viscosity is higher, the material will wind around the main shaft, the dead angle of the material at the back of the scraper will be large, and the phenomenon of agglomeration is serious. The effective heat transfer area is limited.

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