Executive Summary
An essential oil manufacturer required a fully automated, GMP-oriented Citronella Essential Oil Distillation Plant capable of producing premium Citronella Essential Oil, Citronellal-Rich Oil, Citronellol-Rich Oil, Citronella Hydrosol, and high-value natural ingredients for mosquito repellents, pharmaceuticals, cosmetics, aromatherapy, and personal care products.
The customer required a turnkey processing facility capable of maximising essential oil recovery, preserving volatile aldehydes and alcohols, minimising steam and utility consumption, and consistently manufacturing export-quality products to the customer's quality and regulatory requirements, with documentation to support qualification.
Mechotech successfully designed, engineered, manufactured, supplied, installed, and commissioned a Citronella Essential Oil Distillation Plant integrating automated raw material preparation, continuous steam distillation, high-efficiency condensation, Florentine oil separation, vacuum polishing, PLC-SCADA automation, and energy recovery systems.
Customer Background
The customer supplies botanical ingredients to Mosquito Repellent Manufacturers, Pharmaceutical Companies, Cosmetic Manufacturers, Personal Care Brands, Aromatherapy Companies, Agrochemical Manufacturers, Household Product Companies, and International Essential Oil Exporters. Growing worldwide demand for natural insect repellents, herbal disinfectants, clean-label cosmetics, and eco-friendly household products encouraged investment in a modern automated distillation facility.
Customer Challenges
Before modernisation, the customer experienced:
- Low essential oil recovery
- Loss of volatile citronellal
- High steam consumption
- Long distillation cycles
- Manual process variability
- High operating costs
- Inconsistent oil composition
- Limited production capacity
- Difficulty meeting export specifications
Project Objectives
Mechotech developed a turnkey solution capable of:
- Processing 35 MT/day of Fresh Citronella Grass
- Producing premium Citronella Essential Oil
- Maximising citronellal and citronellol recovery
- Producing pharmaceutical-grade hydrosol
- Reducing steam consumption
- Improving energy efficiency
- Documentation to support the customer's quality and regulatory qualification
- Supporting future expansion
Raw Material
- Botanical Name
- Cymbopogon winterianus / Cymbopogon nardus
- Common Name
- Citronella
- Plant Parts Used
- Leaves, Stems
- Major Bioactive Components
- Citronellal, Citronellol, Geraniol, Limonene, Citronellyl Acetate, Elemol
- Daily Processing Capacity
- 35,000 kg/day
Finished Product
Available Options
Applications
- Mosquito Repellents
- Household Insect Repellents
- Personal Care Products
- Soaps & Detergents
- Aromatherapy
- Pharmaceuticals
- Agrochemical Formulations
- Candles & Fragrance Products
Process Flow
Process Description
Raw Material Preparation
Fresh citronella grass is cleaned and chopped into uniform lengths to improve steam penetration and maximise extraction efficiency.
Steam Distillation
Prepared citronella grass is processed in specially designed stainless steel steam distillation vessels. Controlled steam efficiently vaporises volatile aromatic compounds while preserving citronellal, citronellol, and geraniol.
Advantages include:
- High essential oil recovery
- Uniform steam distribution
- Low thermal degradation
- Consistent product quality
Condensation
Essential oil vapours are rapidly condensed using high-efficiency shell-and-tube condensers to preserve volatile aromatic compounds.
Florentine Oil Separation
Condensed liquid is separated into:
- Premium Citronella Essential Oil
- Citronella Hydrosol
Precision separation minimises oil loss and improves product quality.
Vacuum Polishing
The essential oil undergoes vacuum polishing to remove moisture and improve clarity while maintaining its natural chemical profile.
Quality Standardisation
Each production batch is analysed for:
- Citronellal
- Citronellol
- Geraniol
- Specific Gravity
- Refractive Index
- Optical Rotation
- Moisture
- Colour
- GC-MS Fingerprint
- ISO 3848 Compliance
Major Equipment Supplied
- Raw Material Conveyor
- Grass Chopper
- Stainless Steel Steam Distillation Vessels
- Steam Distribution System
- Shell & Tube Condensers
- Florentine Oil Separators
- Essential Oil Filters
- Vacuum Oil Polishing Unit
- Essential Oil Storage Tanks
- Hydrosol Storage Tanks
- PLC-SCADA Automation Panel
- Electrical MCC
- Instrumentation Package
- Automatic CIP System
Automation Features
The plant incorporates intelligent PLC-SCADA automation featuring:
- Automatic Recipe Management
- Steam Flow Control
- Distillation Cycle Automation
- Temperature Monitoring
- Pressure Monitoring
- Condenser Performance Monitoring
- Oil Separator Automation
- Batch Traceability
- Alarm Management
- Utility Monitoring
- Production Analytics
- Remote Diagnostics
- Industry 4.0 Connectivity
GMP & Safety Features
The facility is designed with hygienic, GMP-oriented practice in view; the standards that apply to the client's facility and product are scoped per project. Features include:
- SS 316L product-contact surfaces
- Hygienic sanitary piping
- Closed processing system
- Food & pharmaceutical-grade seals
- Automatic CIP cleaning
- Validation-ready engineering
- GMP-oriented layout
- HACCP-oriented design
- Low-contamination operation
Plant Utilities
- Steam Boiler
- Cooling Tower
- Chilled Water System
- Air Compressor
- RO Water System
- Soft Water System
- Electrical Power
- Instrument Air
Sustainability Features
The plant incorporates environmentally responsible engineering through:
- Heat recovery from condensate
- Energy-efficient steam utilisation
- Water recycling systems
- Utility optimisation
- Biomass utilisation after distillation
- Reduced emissions
- Sustainable manufacturing practices
Customer Benefits
Following successful commissioning, the customer achieved:
- Higher essential oil recovery
- Reduced steam consumption
- Designed for efficient operation
- Increased manufacturing capacity
- Enhanced export competitiveness
- Reliable international product quality
- Reduced environmental footprint
Plants Used In This Project
Why Mechotech?
Mechotech is a manufacturer of turnkey essential oil distillation plants, botanical extraction systems, nutraceutical processing equipment, pharmaceutical machinery, and aromatic ingredient manufacturing facilities. With engineering expertise, our advanced steam distillation technologies, intelligent PLC-SCADA automation, energy-efficient engineering, and GMP-oriented manufacturing enable customers worldwide to produce premium essential oils.
Conclusion
The Citronella Essential Oil Distillation Plant from Mechotech provides a complete turnkey solution for manufacturing premium Citronella Essential Oil, Citronellal-Rich Oil, and Citronella Hydrosol. Through advanced steam distillation, intelligent PLC-SCADA automation, energy-efficient engineering, and GMP-oriented manufacturing, the facility combines these process stages in a single turnkey solution.
Key Technical Highlights
- Raw Material
- Cymbopogon winterianus / Cymbopogon nardus
- Finished Products
- Citronella Essential Oil, Citronellal-Rich Oil, Citronella Hydrosol
- Technology
- Steam Distillation + Florentine Separation + Vacuum Oil Polishing
- Automation
- PLC-SCADA with Industry 4.0 Integration
- Construction Material
- SS 304 / SS 316L
- Compliance
- Hygienic, GMP-oriented design with documentation to support the client's qualification; applicable standards are scoped per project
- Applications
- Mosquito Repellents, Pharmaceuticals, Cosmetics, Personal Care, Aromatherapy, Agrochemicals
Why Global Manufacturers Choose Mechotech
- engineering excellence in essential oil distillation and botanical processing
- Complete turnkey solutions from 100 kg/day pilot plants to industrial facilities
- High-efficiency steam distillation
- Intelligent PLC-SCADA automation with complete production traceability
- GMP-oriented hygienic engineering for pharmaceutical, cosmetic, and personal care industries
- Energy-saving heat recovery and utility optimisation systems
- Complete installation, commissioning, validation, operator training, preventive maintenance, spare parts supply, and lifetime technical support
- Proven expertise in essential oils, herbal extracts, nutraceuticals, pharmaceuticals, oleoresins, natural colours, and specialty botanical processing plants
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