Alcohol-Based Extraction
Alcohol-Based Extraction
Mechotech engineers Ethanol Extraction as a food-grade-ethanol solvent configuration of its extraction platforms — a solvent option already documented across Mechotech's continuous, counter-current, and other extraction equipment. Ethanol suits recovery of a broad range of moderately polar target compounds and is widely accepted in food, nutraceutical, and pharmaceutical applications where solvent residue limits favour ethanol over hydrocarbon solvents such as hexane.
Feed material is contacted with food-grade ethanol within the same batch, continuous, or counter-current extraction body Mechotech supplies for its other solvent configurations, with ethanol flammability requiring flame-proof (explosion-protected) electrical and mechanical provisions through the extraction, solvent-handling, and recovery train. The ethanol-rich miscella is filtered and clarified, then routed to Mechotech's solvent-recovery and distillation equipment, where ethanol is recovered and recirculated to the extraction stage for reuse. Mechotech fabricates the extraction vessel or body, solvent-handling system, and filtration/clarification train in SS 316L (or a process-appropriate grade) with electropolished product-contact surfaces, with capacity and configuration engineered to the customer's feedstock and target extract.
Process Flow
Technical Specifications
| Technology | Ethanol-based solid-liquid extraction |
|---|---|
| Working Principle | Food-grade ethanol contacts the feed material, drawing moderately polar target compounds into the miscella for downstream recovery |
| Extraction Format | Batch, continuous, or counter-current (configurable, per Mechotech's extraction-body platforms) |
| Solvent | Food-grade ethanol |
| Product-contact Material | SS 316L (or process-appropriate grade), electropolished |
| Solvent Recovery | Integrated ethanol recovery and recirculation via solvent-recovery/distillation equipment |
| Compliance Note | Flame-proof (explosion-protected) electrical and mechanical provisions, specified to the site’s hazardous-area classification |
| Automation | PLC-based control of temperature and residence time (configurable to SCADA) |
| Capacity | Configured to requirement — pilot to commercial scale |
| Utilities | Ethanol supply and solvent-recovery utilities, electric power, compressed air |
| Compliance | GMP hygienic design; full documentation for qualification |
Plant Capacities
| Plant Scale | Feed Throughput | Typical Use |
|---|---|---|
| Pilot | Configured to your feedstock and trial plan | Product development, parameter validation |
| Semi-Commercial | Configured between pilot and commercial scale | Scale-up trials, contract manufacturing |
| Commercial | Configured to raw-material supply and confirmed buyer volume | Commercial production |
Extraction-body configuration, solvent-handling capacity and recovery system are sized to the confirmed feedstock and target extract; a pilot system is recommended to validate extraction parameters before scaling.
Manufacturing Process
Feed Preparation
Feed material is sized and prepared ahead of extraction to suit ethanol-based mass transfer.
Ethanol Charging / Contact
Food-grade ethanol is charged to or circulated through the extraction body, contacting the feed material at the process-controlled temperature.
Extraction Hold
The feed and ethanol are held in contact for the process-defined residence time, allowing target compounds to transfer into the extract.
Miscella Drawoff
The ethanol-rich extract (miscella) is drawn off from the extraction body for downstream filtration and solvent recovery.
Filtration & Clarification
The miscella passes through filtration to remove suspended solids ahead of solvent recovery and concentration.
Marc Discharge
Extracted, solvent-wet solids are discharged from the extraction body for downstream desolventising or disposal.
Solvent Recovery & Recirculation
Ethanol is recovered from the miscella through Mechotech's solvent-recovery and distillation equipment and returned to the extraction stage for reuse.
Major Plant Equipment
- Extraction vessel or body (batch, continuous, or counter-current configuration)
- Ethanol charging / circulation system
- Miscella drawoff and collection manifold
- Filtration / clarification unit
- Marc discharge system
- Solvent recovery and recirculation interface
- Flame-proof (explosion-protected) electrical and mechanical provisions
- Instrumentation — temperature and level sensors
- PLC/HMI control panel
Plant Output
Applications
- Food-grade botanical and herbal extract production
- Nutraceutical actives extraction where ethanol residue limits are preferred over hydrocarbon solvents
- Full-spectrum plant extract production for pharmaceutical and nutraceutical use
- Flavour and fragrance compound extraction
Key Features
Food-Grade Solvent Compatibility
Ethanol is widely accepted in food, nutraceutical, and pharmaceutical applications where solvent residue limits favour ethanol over hydrocarbon solvents such as hexane.
Integrated Solvent Recovery
Ethanol is recovered from the miscella and recirculated through Mechotech's solvent-recovery and distillation equipment, reducing fresh-solvent consumption.
Flame-Proof Provisions
Ethanol's flammability is engineered for throughout the extraction, solvent-handling, and recovery train with appropriate flame-proof electrical and mechanical design.
Configurable Extraction Format
Available in batch, continuous, or counter-current configuration, built on the same extraction-body platforms Mechotech supplies for its other solvent options.
GMP Hygienic Construction
Electropolished SS 316L product-contact surfaces support GMP hygienic design, with documentation for regulatory qualification.
Frequently Asked Questions
What is Ethanol Extraction and why choose ethanol as the solvent?
What extraction formats are available for Ethanol Extraction?
Is the ethanol recovered and reused?
What safety provisions does ethanol extraction require?
What capacity range can Mechotech supply?
Does Mechotech supply the complete Ethanol Extraction system as a turnkey plant?
How is Ethanol Extraction different from Hydroalcoholic Extraction?
Which downstream equipment follows an ethanol extraction body?
Where can I read more about ethanol extraction and how it compares with other solvents?
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