Automatic Industrial-Scale Essential Oil Production Line

An industrial essential oil line is a closed system for steam distillation: boiler, stainless steel still, condenser with chilling, oil-water separator, pumps, sanitary piping and a PLC control cabinet. Automation stabilizes quality between batches, lowers labor and limits loss of volatile compounds.

Why automate?

Manual or semi-automatic distillation often suffers from low recovery, loss of volatile compounds, high labor cost and inconsistent quality between batches. An industrial automatic line standardizes the extraction process toward export quality.

Main equipment blocks

• Heating: an industrial boiler supplies stable steam through piping sized to the still's capacity.
• Distillation: stainless steel stills, typically 500 L to 5,000 L or more, where steam passes through the material and carries off volatile compounds.
• Cooling: a condenser with a chilling system turns the vapor mixture back to liquid and improves recovery.
• Separation: an oil-water separator splits essential oil from water; the aromatic water can be collected as hydrosol.
• Automation: temperature and pressure sensors, automatic valves and a touchscreen PLC cabinet to set distillation programs per raw material.
• Auxiliary: transfer pumps and mirror-polished sanitary stainless piping with quick clamp connections for easy CIP cleaning.

Process

1. Cleaning, preparation and loading of raw material.
2. Steam generation and supply to the still (typically 2 to 4 bar).
3. Steam distillation: steam releases the volatile compounds from plant tissue; used for lemongrass, melaleuca, mint, orange, lemon, grapefruit and more.
4. Condensation of the vapor mixture.
5. Oil-water separation.
6. Collection of essential oil and hydrosol.

Benefits

• Stable quality through controlled temperature, pressure and time.
• Less labor: valve operation, steam feed and temperature adjustment can be automated.
• Better recovery through integrated distillation, condensation and separation.
• Scalable capacity to match raw material supply.

Read the full technical article in Vietnamese

Frequently asked questions

What pressure is used for steam distillation?

The set steam pressure is typically 2 to 4 bar, adjusted for the raw material.

Which materials suit steam distillation?

Lemongrass, melaleuca, mint, orange, lemon, grapefruit and many other essential-oil-bearing plants.

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