Exhaust air purification in oil mills – eliminate odors, secure the production environment
oxytec systems for the effective cleaning of polluted process exhaust air during oil extraction from seeds and residues
The processing of rapeseed, sunflower, soya and other oilseeds not only produces valuable crude oils, but also emission-intensive secondary processes: Pressing, drying, extracting and cleaning release fat vapors, VOCs and odorous substances. These pollute the ambient air, lead to technical deposits in ventilation systems – and, if they are not cleaned, often to complaints from residents or requirements from authorities.
With UV-based oxytec exhaust air purification systems, even greasy, warm and fluctuating air flows can be reliably cleaned – without thermal afterburning and without chemicals.
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Simply put your question to our AI. They will answer you individually:
Typical emissions in oil mills
| Process step | Typical pollutants | Special features |
|---|---|---|
| Pressing and grinding | Oil mist, VOCs, organic odorous substances | Aerosol formation, strong odor intensity |
| Drying of press cake | VOCs, roasting odor, dust, aldehydes | Warm, humid air, variable volume flow |
| Extraction (hexane etc.) | Solvent residues, VOCs, hazardous substances | Relevant for explosion protection, TA-Luft-relevant |
| Pelletization / storage | musty odors, organic residues | Long-term sources, weather-dependent emissions |
Why exhaust air purification in oil mills is so important
- VOC emissions are subject to strict limits (TA Luft 2021)
- Odors from pressing and drying disturb employees and residents
- Greasy exhaust air pollutes ducts, fans and heat exchangers
- Explosion protection for solvent residues requires precise cleaning concepts
Legal requirements
- TA Luft 2021: Limit values for VOCs, dust and odors
- GIRL: Odor assessment for proximity to residential or commercial areas
- 4th BImSchV / BImSchG: Approval requirement depending on process and capacity
- Oxytec supplies:
- Proof of emission reduction
- Documentation for approval and official reports
- Solutions with explosion protection certification
Get advice now – for emission-free oil processing with oxytec
Would you like to operate your oil mill with low emissions, efficiently and in compliance with licensing requirements?
Contact us – we will plan your individual exhaust air solution for pressing, drying and extraction.
Oxytec solutions for oil mills and oil plants
UV ozone systems for the decomposition of VOCs and grease vapors
- Oxidizes oil components, odour molecules and organic solvent residues
- No open fire, no additional gas consumption
- Effective with warm, moist, greasy exhaust air
Aerosol separator for oil mist and fine dust
- Filters droplets, fine dust, dust-oil mixtures
- Prevents deposits in pipe systems and heat exchangers
- Robust, low-maintenance and available in stainless steel
Activated carbon or combination filter for fine cleaning
- Retention of residual VOCs and substances that are difficult to oxidize
- Can be combined with UV ozone modules for optimum long-term effect
- Can also be used as a final module for approval security
Typical areas of application
Oil mills / oil pressing plants for rapeseed, soybeans, sunflowers
Seed cleaning and drying plants
Production halls with pelleting, storage or extraction
Animal feed plants with oil cake processing
Your benefits with Oxytec systems for oil mills
Effective against oil odor, VOCs and aerosols
No thermal post-combustion necessary
Low operating costs, easy to maintain and modular
Can be combined with heat recovery (e.g. B. Hot water from exhaust air heat)
Adaptable to existing pipe and hood systems
Future-proof and TA-Luft-compliant
FAQ – häufige Fragen
What typical emissions are produced in an oil mill?
Various process steps are involved:
- Fatty aerosols and oil mist during pressing and drying
- Odorous substances from organic components, e.g. from rapeseed, soy, sunflowers
- VOCs, e.g. aldehydes, alcohols, short-chain hydrocarbons
- Solvent residues (e.g. B. Hexane) during extraction
- Dust and moisture, often in combination
How does oxytec remove these emissions from the exhaust air?
We use a multi-stage cleaning concept:
- Aerosol separator for grease and oil droplets
- UV ozone system for the oxidation of odorous substances and VOCs
- Activated carbon filter for fine cleaning (optional)
These systems are modularly combinable and scalable.
Is the system also suitable for greasy and warm exhaust air?
Yes – our systems are specially designed for:
- Warm, humid air flows up to 70 °C
- Exhaust air with a high grease content or oil mist
- Continuous operation with variable load
Thanks to stainless steel components and robust construction, they are stable over the long term.
How high is the odor reduction with oxytec systems?
- Generally over 90 % reduction in odor emission load
- Verifiable through olfactometric measurements (EN 13725)
- VOC values can also be verified by chemical analysis
Are oxytec systems explosion-proof?
For processes with solvents (e.g. hexane extraction) we offer:
- System components with ATEX certification
- Zone classification and risk analysis in accordance with the Explosion Protection Directive
- Advice on integration into existing EX areas
How much maintenance is required?
Typically:
- UV lamps: Service life 8,000-10,000 hours
- Pre-separator: Cleaning every 4-12 weeks depending on load
- Activated carbon: Replacement intervals between 6 and 12 months
Maintenance can be supported via maintenance contract with remote monitoring
How is it integrated into our existing system?
Our systems are:
- compact, ready for connection and modular design
- can be easily integrated into existing exhaust air ducts or hood extraction systems
- Can also be realized as a container solution or ceiling installation if required
What are the legal requirements for oil mills?
- TA Luft 2021: Limit values for VOCs, odors and organic substances
- 4th BImSchV: Subject to approval depending on the size of the business
- GIRL (Odor Immission Directive): Relevant for proximity to settlements
Oxytec provides support with Measurements, documentation and official reports.
Are there any funding opportunities?
Yes – possible programs:
- Promotion of energy-efficient exhaust air and heat recovery systems
- Investments in low-emission production technology
- Industry-specific programs via BAFA, federal states or EU
We deliver eligible technical project documents.
