Evaporator / Flasher
Multi-stage Miscella Evaporator and Vacuum Flasher that strip solvent from miscella efficiently, protecting oil quality while keeping steam consumption low.
Evaporator / Flasher
Staged Solvent Stripping & Distillation Excellence
Once miscella leaves the extractor and passes through filtration, it still carries a large amount of hexane along with the oil. The Evaporator / Flasher section of the plant is where this solvent is separated from the oil in stages, so the plant recovers the solvent for reuse and delivers oil with solvent content low enough for the next stage of refining.
Super Techno Engineers manufactures the complete Evaporator / Flasher train for solvent extraction plants, from the first stage evaporator through to the vacuum flasher, sized for capacities from 50 TPD to 1500+ TPD. Each stage is designed to remove solvent efficiently while keeping the oil at a safe temperature, so oil quality is not compromised during distillation.
As a leading Evaporator Manufacturer in India, our staged distillation equipment preserves oil color, minimizes steam requirements, and ensures minimal residual solvent in the final discharged oil.
How the Evaporator / Flasher Section Works
Miscella coming out of extraction typically carries 25 to 30 percent oil, with the rest being solvent. Removing all of this solvent in one step would need very high temperatures, which can damage the oil. Instead, the Evaporator / Flasher train removes solvent in stages, with each stage working at a lower solvent load than the one before it.
The first stage evaporator takes the raw miscella and removes the bulk of the solvent using indirect steam heating. The partially concentrated miscella then moves to the second stage evaporator, which removes most of the remaining solvent. What is left after the second stage is a small amount of solvent trapped in the oil, and this is removed in the vacuum flasher using direct stripping steam under vacuum. The solvent vapor from every stage is routed to the condenser system for recovery, so very little hexane is lost from the process.
Staged Evaporation & Flashing Equipment
Miscella Evaporator
The Miscella Evaporator is the equipment that carries out solvent removal from miscella using indirect steam heating. Built as a shell and tube unit with miscella on one side and steam on the other.
- check_circle Indirect heating keeps oil separate from steam at all times.
- check_circle Shell and tube design gives high heat transfer area in a compact footprint.
- check_circle Handles changing solvent loads smoothly between stages.
- check_circle Built to run continuously alongside the extractor without interruption.
Falling Film Evaporator
The preferred design for miscella distillation because it protects oil quality. Miscella flows down vertical heated tubes as a thin film, exposed to heat for only a short duration.
- check_circle Short residence time reduces the risk of oil darkening or degradation.
- check_circle Thin film formation gives faster and more even heat transfer.
- check_circle Works well with fouling-prone miscella as the liquid film keeps moving.
- check_circle Suited to continuous, high-throughput commercial distillation.
First Stage Evaporator
The First Stage Evaporator is where distillation begins. It takes miscella straight from filtration and removes the largest share of the solvent load in one pass.
- check_circle Handles the highest solvent volume in the distillation train.
- check_circle Uses low pressure steam to keep energy consumption efficient.
- check_circle Brings oil concentration up sharply to ease subsequent stages.
- check_circle Designed for stable operation even with fluctuating feed rates.
Second Stage Evaporator
The Second Stage Evaporator takes partially concentrated miscella from the first stage and removes most of the remaining solvent before entering the flasher.
- check_circle Operates at a lower solvent load, allowing tighter temperature control.
- check_circle Brings oil concentration close to final levels before flashing.
- check_circle Works in series with the first stage evaporator for smooth gradation.
- check_circle Reduces the steam load required at the vacuum flasher stage.
Vacuum Flasher for Solvent Extraction
The final stage in the Evaporator / Flasher train. It removes the last traces of solvent from the oil using direct stripping steam under deep vacuum, keeping the boiling point low enough to avoid thermal damage.
Build Quality & Material of Construction
The Evaporator / Flasher equipment handles hot miscella and solvent vapor continuously, so it is built as a fully enclosed, vapor-tight system throughout. Super Techno Engineers fabricates the shell, tube bundles, and flasher vessel in materials suited to solvent duty, with structural supports designed for sustained operating temperature and pressure.
- verified Shell and tube bundles in carbon steel or SS 304, contact parts upgradable on request.
- verified Vapor-tight construction across every stage to prevent hexane loss.
- verified Insulated vessels to reduce heat loss and improve steam efficiency.
- verified Structural design rated for continuous operation without deformation under vacuum.
Operational Performance
Proven Distillation Efficiency
Less than 300 ppm residual solvent in oil after the vacuum flasher stage, safeguarding refined oil quality.
50 to 1500+ TPD capacity range across the complete Evaporator / Flasher distillation train.
Fully enclosed, negative-pressure design that captures and recovers solvent vapor at every stage.
Data Sheet
Standard Specifications
Key technical parameters for our continuous Evaporator / Flasher distillation systems. Custom configurations are available upon request.
| Parameter | Description / Value |
|---|---|
| Processing Capacity | 50 TPD to 1500+ TPD (Tons Per Day) |
| Number of Stages | First Stage Evaporator, Second Stage Evaporator, Vacuum Flasher |
| Heating Method | Indirect Steam (Evaporators), Direct Stripping Steam (Flasher) |
| Evaporator Type | Falling Film / Rising Film Shell and Tube |
| Residual Solvent in Oil | Less than 300 ppm after flashing (< 300 ppm) |
| Solvent Compatibility | Food Grade Hexane (standard) |
| Material of Construction | Carbon Steel / SS 304 (contact parts upon request) |
| Operating Condition | Vacuum operation at flasher stage, vapor-tight throughout |
Evaporator for Miscella Distillation
The Evaporator / Flasher train is built specifically for miscella distillation, not general purpose evaporation. Every stage is sized to the solvent load coming from the extractor and filtration section, so the equipment matches the actual flow and concentration profile of the plant rather than a generic capacity figure. Super Techno Engineers designs the evaporator for miscella distillation as part of the full solvent extraction plant, so it integrates directly with upstream extraction and downstream desolventizing equipment.
Evaporator for Solvent Recovery
Recovering solvent efficiently is as important as removing it from the oil. The Evaporator / Flasher train routes solvent vapor from every stage to the condenser system, where it is recovered and sent back into the process. An evaporator built for solvent recovery keeps vapor loss to a minimum, which directly reduces hexane make-up costs for the plant over time.
How We Work
Our process ensures that every evaporation and vacuum flashing vessel is designed to match your plant's exact miscella flow, minimizing steam consumption and safeguarding oil quality.
Miscella Load Analysis
We study the feed concentration and flow rate coming from extraction and filtration to size each evaporator stage correctly.
Staged Distillation Design
Our engineers set the heat transfer area, steam pressure, and vacuum level for each stage so solvent removal happens gradually without overheating the oil.
Fabrication & Vapor-Tight Testing
Every vessel is fabricated, pressure-tested, and checked for vapor tightness before shipment and installation at the plant.
Evaporator Manufacturer in India
Super Techno Engineers is an Evaporator manufacturer in India, supplying the complete Evaporator / Flasher train to solvent extraction plants across the country and to export clients. As an ISO 9001:2015 certified company, we manufacture the evaporators and flasher vessels in-house, which lets us control quality from tube bundle fabrication to final vapor-tight testing. Whether you are setting up a new distillation section or upgrading an existing one, our team can supply an Evaporator / Flasher train sized to your plant's capacity.
Evaporator Flasher Spare Parts
Tube bundles, gaskets, and steam control components see continuous wear from heat cycling and solvent exposure. Super Techno Engineers supplies Evaporator Flasher spare parts including tube bundles, gaskets, seals, steam traps, and vacuum system components, so plants can keep the distillation section running without long shutdowns.
Case Studies and Endorsements
Industry Testimonials
"Before installing the complete Evaporator and Vacuum Flasher train from Super Techno Engineers, our plant experienced oil darkening and higher solvent loss during peak runs. With their falling film design and vacuum flasher, residual solvent stays well below 300 ppm with lighter oil color and substantial steam savings."
Evaporator / Flasher Installation Video
Live Plant
Live Plant Commissioning
Continuous staged evaporation and vacuum flashing in operation
Support & Information
Frequently Asked Questions
Evaporators remove the bulk of the solvent from miscella using indirect steam heating, while the flasher removes the last traces of solvent under vacuum using direct stripping steam.
Removing all the solvent in one step would need very high heat, which can damage the oil. Staged distillation removes solvent gradually, protecting oil quality.
It is used for miscella evaporation with minimal oil exposure to heat, since the miscella flows as a thin film and solvent flashes off quickly.
Vacuum lowers the boiling point of the oil-solvent mixture, so the last traces of solvent can be stripped out at a lower temperature, protecting the oil.
Our Evaporator / Flasher equipment is available for plants ranging from 50 TPD to 1500+ TPD.
Yes. It can be installed or upgraded on an existing distillation line as long as the miscella flow rate and concentration profile are matched during design.