Products Description

What are the advantages and limitations of thin film evaporation compared to other evaporation technologies (e.g., boiling evaporation, spray drying)?

Thin film evaporation system compared with other evaporation technology (such as boiling evaporation, spray drying), has its unique advantages and limitations.

Advantages:

1. Thin film evaporation in the rotating scraper film evaporator to achieve the material flow and secondary steam flow of independent channels, this design significantly reduces the pressure loss, because the material is along the evaporation cylinder wall descending film down, while the secondary steam evaporated by the evaporation of evaporation surface from the cylinder in the centre of the space almost out of the evaporator.

2. In contrast to the conventional boiling evaporation technique, the film evaporation technique takes advantage of the properties of a high velocity updraft to eject the liquid and maintains an efficient heat transfer performance even at very high heat flow densities.

Limitations:

1. Although thin film evaporation technology can provide low pressure loss and efficient heat transfer performance in some cases, not all materials are suitable for treatment by means of thin film evaporation. This means that the range of applications for thin film evaporation technology may be limited.

Compared to spray drying technology, thin film evaporation technology may have disadvantages in terms of drying speed, product dispersion and solubility. Spray drying technology, by dispersing the material to be dried into mist-like droplets and exchanging them with a stream of hot air, enables rapid drying and the achievement of products with good dispersibility and solubility.

Technical specification

Model	Diameter (mm)	Surface (㎡)	Processing measures (kg/h)
WF70-7	70	0.07	0.2-3
WF125-17	125	0.17	0.5-6
WF200-45	200	0.45	0.7-8
WF300-75	300	0.75	1.0-11

Scraped Film Evaporator Configuration

Part Name	Unit	Quantity	Note
Jacketed type main reaction evaporator	set	1	Standard
Digital frequency conversion stirring device control	set	1	Standard
250ML quantitative feeding containers	set	1	Standard
Multiple glass condenser	set	1	Standard
Vacuum protect cold trap	pcs	1	optiona
Scraped panel type scraped film system	set	1	Standard
Material discharge collection system	set	1	Standard
Stainless steel workbench	set	1	Standard
Tube luca pieces	set	1	Standard
Quantitate charge pump	set	1	Standard
Vacuum system	set	1	optiona
High temperature heating circulator (room temp to 180 ℃)	Set	1	Optional, jacketed reacto heating
Low temperature cooling circulator(room temp to -20℃)	Set	1	Optional,condenser cooling
Secondary circulation device	Set	1	Optional
Digital thermometer	set	1	Optional, tube temperature could be measured
Digital vacuum gauge	set	1	optiona
Unique customization is supported by strong specialist team who have more than ten years technical experience.