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Short Path Evaporator


Explore the features that enable the fine separation of volatile fraction from heat-sensitive chemical mixtures with high boiling points

Wiper system

PTFE wiper blades spread the feed on the evaporation column to form a thin film. The grooves of the wiper blade are angled in such a way that, in addition to thin film formation over the evaporation surface area, it moves the film downwards with every rotation.

Short residence time on the evaporation surface

Gentle distillation at low temperature

Less damage to the heat sensitive chemical fraction

Low fouling on the evaporation surface

Evaporator Rotary Wiper

Easy to install and dismantle the rotary wiper

Evaporation performance

Different components evaporate at different rates in both Short Path and Thin Film Evaporators. We studied the evaporation rates of different solvent types, which you can see in the graph on the right.

Experimental Conditions
* Pressure : Atmospheric pressure
* Flow rate of heat transfer fluid : 18 L/min

Difference between Short Path and Thin Film Evaporator

The main differences between our Short Path and Thin Film Evaporators are the operating pressure and the position of the condenser.

AGI Short Path Evaporator has an internal condenser co-axially positioned alongside the wiper and evaporation surface area. It can operate from 0.001 mbar (abs.) to atmospheric pressure.

AGI Thin Film Evaporator has an external condenser and can operate from 0.1 mbar (abs.) to atmospheric pressure.

The difference in pressure is due to the pressure drop that occurs when the vapour travels from the evaporating area to the condensing area. For our Short Path Evaporator, this distance is shorter compared to our Thin Film Evaporator. This means that AGI Short Path Evaporator can operate at very low pressure compared to AGI Thin Film Evaporator.

Thin Film Evaporator Vs Short Path Evaporator Comparison
Thin Film
Evaporator
Short Path
Evaporator
Design Pressure0.1 mbar (abs.)0.001 mbar (abs.)
CondenserExternal condenserInternal condenser

Easy installation and dismantling

AGI Short Path Evaporator can be easily installed without the use of complex tools or steps. The rotary wiper can be easily removed for cleaning and reinstalled.

Easy to clean and maintain

Prevents cross-contamination from batch-to-batch

Easy to install and dismantle the rotary wiper

Standard package

No.PartDN60DN100
1Jacketed EvaporatorID 60 mm
Evaporation Surface Area: 0.05 m²
ID 100 mm
Evaporation Surface Area: 0.1 m²
2Magnetic Seal with CoverTorque: 1.1 N.m, Cover: SS316
3Stirrer ShaftSS316
4WiperPTFE Wiper: +200 oC (Polybenzimidazole: +300 oC)
5Feed VesselFeed Vessel: 1000 mL
Vent Valve: ф10
Thermometer Pocket SQG 14/25, ф8, 245(L) Cap
SQG 29/32 Needle Valve, NGTV-12L
Feed Vessel: 2000 mL
Vent Valve: ф10
Thermometer Pocket SQG 14/25, ф8, 330(L) Cap
SQG 29/32 Needle Valve, NGTV-12L
6TrapDN 50, 200 H, NW 40
Borosilicate Glass 3.3
DN 50, 200 H, NW 40
Borosilicate Glass 3.3
7Receiver for High Molecular Weight500 mL
Borosilicate glass 3.3
1000 mL
Borosilicate glass 3.3
8Receiver for Low Molecular Weight500 mL
Borosilicate glass 3.3
1000 mL
Borosilicate glass 3.3
9Receiver300 mL
Borosilicate glass 3.3
500 mL
Borosilicate glass 3.3
10Support StructureW 645 x D 400 x H 1530 mm
SS + Epoxy Coating
*Continuous feed configurations are also available. Please contact us.
*All O-rings are consumable parts
*Overhead stirrer motor is not included

Something else in mind?

At AGI, we can help to find the best solution for you. If you have additional requirements or a design already in mind, feel free to send us a message and/or drawing so that we can understand your process better and provide you with a customised product that meets your exact needs.