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Distillation Columns
distillation columns

Distillation is a common laboratory technique. It is used to separate mixtures with differing properties; the efficiency depends on the rate of heat exchange between the fluid being distilled and the coolant.

Direct flow distillation: Suitable for mixtures, whose components have boiling points which differ by at least 25°C.

Reverse flow distillation: The separation is successful for mixtures whose components have boiling points which differ by at least 0.5°C.
Distillation Columns The diameter of the column defines the throughput and the acceptable pressure drop, while the height defines the distillate purity. Uncontrolled condensation on the column walls is reduced by insulation with silver coated vacuum jackets (10-6 mbar). The vacuum jacket has viewing strips.
The column type and its packing also influence separation efficiency.
Tapered glass items are available to US standards ASTM E676 astm logo
distillation column Standard Column Types

Packed Columns with Conical Ground Joints Packed columns can be fitted with different types of packing for various distillation requirements.

Packed Columns with Conical & Spherical Joints Conical joint at the top and spherical joint at the bottom.

Packed Columns with Spherical Ground Joints

Vigreux Columns

Vigreau Columns have a lower separating efficiency than packed columns with Rasching rings but can work with small volumes of fluid and produce low pressure losses.
Vigreux Columns with Conical Ground Joints

Vigreux Columns with Conical and Spherical Ground Joint Conical joint at the top and spherical joint at the bottom.

Vigreux Columns with Spherical Ground Joints

 vigreux columns
bubble tray columns


Bubble Cap Tray Columns

Bubble tray columns have high separating efficiencies, they are very suitable for analysis of processes that will be substantially scaled up.
Bubble Cap Tray Columns with Conical Joints

Bubble Cap Tray Columns with Insulating Jacket