Energy-efficient exhaust air purification with an efficiency of up to 97%

Regenerative thermal incineration

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Efficient Purification of VOC-Contaminated Process Exhaust Air

Regenerative exhaust air purification is one of the most sought-after processes for purifying VOC-contaminated process exhaust air in industrial applications. In addition to thermal and catalytic exhaust air purification, it is gaining particular attention in applications where VOC emissions must be reliably reduced while simultaneously maximizing energy efficiency. It is used wherever volatile organic compounds, solvents, or odorous components must be safely removed from the exhaust air.

Venjakob Umwelttechnik develops system solutions designed for high purification performance, reliable compliance with legal emission limits, low operating costs, and sustainable treatment of industrial exhaust air streams. The systems are individually tailored to production processes, exhaust air volumes, and pollutant concentrations.

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VEN CLEANAIR RTO Regenerative Incineration Systems

RTO Systems for Stable and Reliable Process Integration

At VEN CLEANAIR RTO, the technical design takes center stage: ceramic heat storage elements, controlled airflow, and a switching concept tailored to the production process ensure stable purification operation. Exhaust air volume, VOC concentration, solvent composition, and production operating mode determine the specific system configuration. The result is not a one-size-fits-all solution, but rather an RTO system that is reliably integrated into the respective production process with regard to process safety/reliability.

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The Benefits of Regenerative Thermal Incineration

Regenerative thermal incineration uses ceramic storage media to recover heat from the purified gas and preheat the incoming exhaust air stream(s). This makes the process particularly suitable for VOC-laden processes where minimizing additional energy requirements is a priority.

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High Heat Recovery

Ceramic heat storage media transfer heat from the purified gas to the incoming exhaust air.

Low additional energy requirement

If the VOC load is sufficient, the system can operate largely without additional power.

Suitable for high volume flows

The processes are specifically designed for continuous exhaust air streams with low to moderate VOC concentrations.

Process safety/reliability for switching

Multi-chamber systems and optimized valve technology ensure stable flow control during continuous operation.

An Overview of the Incineration Processes

Post-combustion processes reliably oxidize VOCs into CO₂ and water. Depending on the exhaust air stream(s), pollution levels, and energy requirements, three established processes are used. The following overview simplifies the selection process for applications such as coating, drying, and adhesive application.

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Regenerative Thermal Oxidation (RTO)

Typical Application
Large exhaust air flow rates with low to medium VOC concentrations
Temperature / Technology
> 800 °C, ceramic heat storage elements
Energy Efficiency
Very high (autothermal operation possible)
Special Features
Maximum heat recovery, low operating costs
Capacity range
approx. 1,000–70,000 Nm³/h


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Thermal incineration (TNV)

Typical Application
Highly fluctuating or high VOC loads, exhaust air containing particulates
Temperature / Technology
> 750 °C, robust thermal process
Energy Efficiency
Moderate
Special Features
Highly tolerant of cyclic loading and particles
Performance range
approx. 800–32,000 Nm³/h

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Catalytic incineration (KNV)

Typical Application
Small to medium exhaust air streams with uniform load
Temperature / Technology
250–350 °C thanks to the catalyst
Energy Efficiency
High
Special Features
Compact design, economical with stable VOC levels
Performance range
approx. 500–20,000 Nm³/h

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Industry-Specific Solutions for Clean Exhaust Air

Every industry has its own pollutants, volume flow / airflow volume, and emission limits. Venjakob Umwelttechnik develops exhaust air treatment solutions tailored to these differences—drawing on decades of experience across various industries. The result is systems that reliably comply with emission limits and can be operated cost-effectively.

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We’d be happy to advise you

Would you like to explore our systems, processes, or solutions—or do you already have a specific project in mind? Our representatives are here to assist you with expert advice, technical expertise, and years of experience.

Christian Hoyme

Projects & Sales

Telephone: +49 5066 9806-0
E-mail: ed.tu-bokajnev@egarfna

Cord Brönneke

Projects & Sales

Telephone: +49 5066 9806-0
E-mail: ed.tu-bokajnev@egarfna

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