Scraper type thin film evaporation

NegotiableUpdate on 02/03

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Overview

Scraper type thin film evaporation is a thermal separation process that utilizes high vacuum to scrape materials into thin films in a form that facilitates material evaporation. On the inner surface of the heated evaporator cylinder, a rotating film scraping system scrapes the raw material into a uniform thin film. The scraping film system can create good turbulence effects on the liquid film, optimize heat and mass transfer processes, thereby greatly improving evaporation efficiency, reducing the boiling point of materials, and achieving separation processes under lower and milder temperature conditions. The evaporated light component gas is condensed in an external condenser. The concentrated heavy phase is continuously discharged from the bottom of the evaporator. The operating pressure inside the thin film evaporator can be as low as 1mbar.

Product Details

Scraper type thin film evaporationAdvantage:

Low operating temperature:

Due to the above characteristics, the evaporation process can be maintained under high vacuum conditions. Due to the increase in vacuum degree, the corresponding boiling point of the material is greatly reduced, so the operation can be carried out at lower temperatures, reducing the thermal decomposition of the product.

Short material retention time:

The material flows from the top to the bottom of the evaporator by gravity, due toScraper type thin film evaporationThe special structure of the evaporator makes the residence time of the material very short, making it particularly suitable for the evaporation of thermosensitive materials.

High heat transfer efficiency (fast evaporation rate):

Due to the action of the scraper rotor, the thickness of the turbulent liquid film is reduced, which lowers the thermal resistance. At the same time, the function of the scraper can effectively prevent material scaling on the heating surface, improve heat exchange efficiency, and therefore have a large material processing capacity per unit area of the evaporator.

Widely used:

In thin film evaporators, materials with high viscosity, heat sensitivity, and easy oxidation, as well as materials that are prone to crystallization, can be processed.

From small-scale testing, pilot testing to industrial production, relying on a strong team of engineers and manufacturing personnel, Nanjing Korisheng can provide customers with customized turnkey devices that meet process requirements.

Model:

Product Model	Evaporation area	processing power
KWE10	0.1m2	3-12kg/h
KWE 20	0.2m2	5-25kg/h
KWE 50	0.5m2	10-60kg/h
KWE 100	1m2	20-120kg/h
KWE 200	2m2	50-250kg/h
KWE 400	4m2	100-500kg/h
KWE 600	6m2	100-700kg/h