Compared to short-path distillation, film evaporators have their respective application areas, such as:

The raw material contains a significant amount of light components that need to be removed, and the use of a薄膜 evaporator would be more efficient.

-   No need for a high vacuum level; typically, below 1 mbar is sufficient for separation.

The need for process scaling requires that film evaporators, compared to short-path evaporators, better prevent the splashing of light components, making them suitable for scaling up the film evaporation process to pilot or industrial production.

Stainless steel evaporators offer higher heat transfer efficiency compared to glass, with a greater processing capacity per unit area. An evaporator with a 0.1 square meter surface area can process approximately 10 kilograms per hour.

Film evaporators can be designed with a full jacket, ensuring all contact points with the material are heated after entering the evaporator. Suitable for processing materials with high melting points and high viscosity.

Film evaporators can serve as reboilers for distillation columns, offering excellent scalability. Modified, they can become a distillation unit with a film evaporator as the reboiler, suitable for separating components with closely similar boiling points.

All light and heavy fractions are equipped with gear pumps, allowing simultaneous sampling at the gear pump outlet. After weighing, the feed rate data and critical data such as the distillation ratio of the light fraction can be obtained, which can guide the experiment process at any time. Since the feed is continuous, the discharge of both light and heavy fractions is also continuous. Sampling and discharge under vacuum are unrestricted, enabling continuous distillation whether the light fraction or the heavy fraction is the product.

The pilot-scale thin-film evaporator in the VTA can achieve the following main functions:

Demonstrate the feasibility of thermal separation using thin-film evaporation

Optimize the process to obtain design data for industrial production systems

- Can be produced in a miniaturized manner, with continuous operations, and the processing capacity can reach 10 kg/hour.

Optimize the evaporator's performance, including determining the suitable scraping blade rotor