Wuxi Hengji Heat Exchange Equipment Co. , Ltd.

139 6185 0188

139 0618 6561

scraped film evaporator

Product Details

Product Description

Scraper type thin film evaporator is an efficient evaporation and distillation equipment that uses high-speed rotation to distribute liquid into a uniform thin film for evaporation or distillation. It can also perform deodorization, defoaming reactions, heating, cooling and other unit operations, and is suitable for industries such as pharmaceuticals, food, light industry, petroleum, chemical, and environmental protection in China and the West.

Performance and Features


This device adopts a centrifugal sliding groove rotor, which can form a thin film even at low flow rates. The sediment adhering to the inner wall surface of the evaporation section of the cylinder can be quickly removed by a movable scraper. Compared with a fixed gap scraper evaporator, the evaporation capacity can be increased by 40-69%. It has the following performance and characteristics:
1. The heat transfer coefficient value is high, the evaporation capacity is large, the evaporation intensity can reach 200kg/m2 · hr, and the thermal efficiency is high.
2. The heating time of the material is short, between about 5 seconds and 10 seconds, and it works under vacuum conditions, which is beneficial for thermosensitive materials, keeping various components from decomposing and ensuring product quality.
3. It can adapt to a wide range of viscosity changes and handle both high and low viscosity materials, with material viscosity up to 100000 centipoise (CP).
4. Changing the rotation direction of the scraper groove can adjust the maintenance time of the material in the evaporator.
5. The inner wall of the evaporation section cylinder is precision bored and polished, making the surface less prone to coking and scaling.
6. Easy to operate, easy to adjust product indicators, and capable of continuous production under closed conditions with self-control.
7. The equipment has a small footprint, simple structure, easy maintenance, and easy cleaning.

Technical Specifications

Project Model LG0.8 LG1.5 LG2.5 LG4 LG6 LG10
heat transfer area m² 0.8 1.5 2.5 4 6 10
vapor pressure MPa 0.3 0.3 0.3 0.3 0.3 0.3
degree of vacuum KP 70 70 70 70 70 70
evaporation kg/n 160 300 500 800 1200 2000
energy consumption kg/n 168 315 525 840 1260 2100
Motor power KW 1.1 1.5 2.2 4 5.5 11
speed rpm 300 300 280 134 134 88
equipment height mm 2500 3295 4100 5180 5800 7800