Extractive distillation is a specialized process used to separate liquid mixtures with components that have very close boiling points, making conventional methods like simple or fractional distillation less effective. It achieves this by introducing a solvent (extracting agent) that changes the relative volatility of the components, allowing for easier separation.

How It Works:

1. Adding Solvent: A specially chosen solvent is mixed with the liquid to be separated. The solvent alters the boiling behaviour of the components.
2. Heating: The mixture is heated, and the component with the adjusted boiling point starts to vaporize.
3. Separation: The vapor is collected, condensed, and separated from the solvent.
4. Solvent Recovery: The solvent is recycled for reuse, making the process efficient and cost effective.

Applications:

• Petrochemical Industry: Separation of hydrocarbons with close boiling points, such as in refining processes.
• Chemical Production: Separation of specialty chemicals or solvents.
• Pharmaceuticals: Purification of active ingredients and separating complex mixtures.

Benefits:

• Effective for Difficult Mixtures: Provides separation when boiling points are very close.
• Energy-Efficient: Requires less energy compared to other methods for such mixtures.
• Versatile: Can handle various combinations of solvents and components.
• Cost-Effective: Solvent recovery reduces operational costs.

Material of Construction: SS 304 / SS 316 / MS / As per client needs