Steam Distillation Plant
Distillation Equipment

Steam Distillation Plant

Steam Distillation Plant Distillation Equipment — Mechotech

Steam Distillation Plant

Steam distillation is a gentle, widely used separation method in which live or generated steam is passed through aromatic and botanical feedstock to volatilise the essential oil without direct contact between the plant material and boiling water. Because the volatile aroma compounds co-distil with steam well below their normal boiling points, delicate oils are recovered with minimal thermal degradation. It is the industry standard for flowers, leaves, herbs, grasses and woody material where oil quality and yield both matter. Mechotech designs and manufactures complete turnkey steam distillation systems, engineered around each client's feedstock, throughput and target oil specification.

In a steam distillation plant, dry saturated steam is introduced beneath a perforated support carrying the charged botanical material inside a jacketed or insulated distillation vessel. The rising steam ruptures oil-bearing cells and carries the volatile constituents overhead as a vapour mixture, which is then condensed and gravity-separated. Working the aroma fraction at reduced effective temperature protects heat-sensitive top notes, gives a cleaner thermal profile and improves overall energy efficiency versus prolonged direct boiling. Product-contact parts are fabricated in SS 304 / SS 316L with electropolished finishes, matched to shell-and-tube or multi-tube condensers and stainless oil-water (Florentine) separators for clean phase splitting. PLC/SCADA automation manages steam rate, temperature and cycle time, and capacity is configured to requirement from pilot to full commercial scale.

Technical Specifications

TechnologySteam Distillation
Working PrincipleCo-distillation of volatile oils with injected steam below their boiling points
Operating TemperatureAround atmospheric steam range, configurable to feedstock
Operating PressureAtmospheric to low-pressure steam, configurable
Product-contact MaterialSS 304 / SS 316L
Condenser / SeparationShell-and-tube / multi-tube condenser with stainless oil-water (Florentine) separator
AutomationPLC/SCADA (configurable)
CapacityConfigured to requirement — pilot to commercial
UtilitiesSteam and cooling water
ComplianceGMP hygienic design
Final OutputEssential oil / distillate with recovered hydrosol

Manufacturing Process

1

Feedstock Charging

Prepared aromatic or botanical material is loaded onto a perforated grid inside the distillation vessel, sized to allow uniform steam penetration through the bed.

2

Steam Generation & Injection

Dry saturated steam from a boiler or in-built generator is injected below the charge at a controlled rate, avoiding channelling and localised overheating.

3

Volatilisation

Steam ruptures the oil glands and the volatile aroma compounds co-distil with the vapour at temperatures well below their individual boiling points.

4

Vapour Transfer

The oil-laden vapour rises through the swan-neck / vapour line and is directed to the condenser train under gentle, controlled flow.

5

Condensation

Shell-and-tube or multi-tube condensers cooled by circulating water bring the vapour mixture back to a two-phase liquid of essential oil and hydrosol.

6

Oil-Water Separation

The condensate is decanted in a stainless Florentine (oil-water) separator, splitting the essential oil from the aromatic water by density.

7

Collection & Hydrosol Recovery

Separated essential oil is collected and polished, while the aromatic hydrosol is recovered for reuse or as a co-product.

Applications

  • Essential oil production from flowers, leaves and grasses
  • Aromatic herb and medicinal plant processing
  • Spice oil recovery from clove, cinnamon, cumin and similar material
  • Perfumery and fragrance raw-material distillation
  • Flavour ingredient and food aroma extraction
  • Mint, lemongrass, citronella and eucalyptus oil distillation
  • Pharmaceutical and nutraceutical aromatic ingredient supply
  • Hydrosol and aromatic water production

Key Features

  • Gentle Thermal Profile

    Co-distillation with steam volatilises oils below their boiling points, protecting delicate top notes and preserving natural aroma quality.

  • SS 304 / SS 316L Construction

    Product-contact surfaces are fabricated in stainless steel with electropolished, hygienic finishes suited to food, flavour and pharma duty.

  • Efficient Condensation & Separation

    Matched shell-and-tube condensers and stainless Florentine separators deliver clean phase splitting and consistent oil recovery.

  • PLC/SCADA Automation

    Automated control of steam rate, temperature and cycle time gives repeatable batches and reduced operator dependency.

  • Configurable Capacity

    Vessels and utilities are engineered from pilot units to large commercial trains, sized to feedstock bulk density and throughput.

  • Turnkey Engineering

    Mechotech delivers design, fabrication, installation and commissioning as a single accountable scope.

Frequently Asked Questions

What is steam distillation?
Steam distillation is a separation technique in which steam is passed through aromatic or botanical material so that its volatile essential-oil compounds co-distil with the steam. The vapour is then condensed and the oil is separated from the aromatic water, giving a natural oil recovered at comparatively low temperature.
How does a steam distillation plant work?
Dry steam is injected beneath charged feedstock in a distillation vessel, rupturing the oil glands and carrying the volatile constituents overhead. The vapour passes to a water-cooled condenser and the condensate is decanted in an oil-water separator, collecting essential oil while recovering the hydrosol.
Which feedstocks and oils suit steam distillation?
It suits a wide range of aromatic and botanical materials — flowers, leaves, grasses, herbs, spices and woody parts — such as mint, lemongrass, citronella, eucalyptus, clove and cinnamon. It is well matched to oils whose aroma compounds are volatile and reasonably heat-stable at steam temperatures.
How does steam distillation compare to hydro and vacuum distillation?
In steam distillation the feedstock never contacts boiling water, giving good throughput and cleaner oils, whereas hydro distillation immerses the material directly in water and suits fine or powdery charges. Vacuum distillation runs under reduced pressure to lower boiling points further, which is preferred for very heat-sensitive or high-boiling fractions.
What capacities are available?
Capacity is fully configurable. Mechotech builds systems from pilot-scale units for product development through to large commercial distillation trains, sized to the bulk density, batch size and throughput of the specific feedstock.
What materials and compliance standards are used?
Product-contact parts are fabricated in SS 304 / SS 316L with electropolished, hygienic finishes and GMP-oriented design suited to essential oil, flavour, food and pharmaceutical applications.
Does Mechotech provide turnkey design, installation and commissioning?
Yes. Mechotech is a turnkey designer and manufacturer, delivering process design, fabrication, installation and commissioning of the complete steam distillation plant as a single performance-verified scope.

Ready to discuss your project?

Get a free quote and technical consultation from our engineering team.

Get A Free Quote
★Review Us