Experience highly efficient and energy-saving VOC treatment. Our RCO system achieves up to 99% purification efficiency and 95% heat recovery, drastically reducing your operational costs.
View Product DetailsRCO (Regenerative Catalytic Oxidizer) is a waste gas treatment device that combines high-efficiency heat recovery with low-temperature catalytic oxidation technology. It is specifically designed for removing low to medium concentrations of volatile organic compounds (VOCs), organic odors, and other oxidizable harmful gases, and is widely used in chemical, pharmaceutical, coating, printing, and electronics industries.
The core of RCO lies in the dual mechanism of “heat storage + catalysis”:
VOC-containing waste gas first enters the ceramic regenerative bed, where it is preheated to near the reaction temperature (typically 250–400°C) by the high-temperature ceramic body. Simultaneously, the purified gas discharged stores heat in another set of ceramic beds, achieving a heat recovery efficiency of up to 90–95%.
The preheated waste gas enters the catalytic reaction zone. Under the action of noble metal or transition metal catalysts (such as Pt, Pd, MnO₂, etc.), VOCs are completely oxidized to CO₂ and H₂O at temperatures far below traditional combustion temperatures.
The airflow direction is periodically switched via valves, causing the ceramic beds to alternately absorb and release heat, maintaining the system’s self-sustaining operation and significantly reducing external energy requirements.
Main chemical reaction equations:
For volatile organic compounds, such as methane (CH₄) and benzene (C₆H₆), the oxidation reaction equations are as follows:
CH4+2O2→CatalystCO2+2H2OCH_4 + 2O_2 \xrightarrow{Catalyst} CO_2 + 2H_2O
Methane reacts with oxygen in the presence of a catalyst to convert it into carbon dioxide and water.
Catalytic oxidation of benzene:
C6H6+7.5O2→Catalyst6CO2+3H2OC_6H_6 + 7.5O_2 \xrightarrow{Catalyst} 6CO_2 + 3H_2O
Benzene is completely oxidized into carbon dioxide and water under the action of a catalyst.
| Dimension | Technical Characteristics | Key Advantages |
| 1. Reaction Temperature | Low-Temperature Oxidation: The reaction typically occurs between 250°C and 500°C (far lower than the 760°C+ required for RTOs). | ✅ Extremely Low Energy Consumption: Fast start-up time; fuel consumption is significantly lower than direct combustion or RTOs. ✅ No Secondary NOx Pollution: The temperature is below the thermal NOx formation window. |
| 2. Heat Recovery Efficiency | Regenerative Heat Exchange: Uses ceramic heat storage media (similar to RTO); heat recovery efficiency can reach >95%. | ✅ Low Operating Cost: The exhaust temperature is typically only 20-30°C higher than the inlet temperature, ensuring maximum thermal energy utilization. |
| 3. Purification Efficiency | Catalytic Reaction: Uses precious metal (e.g., Pt, Pd) or base metal catalysts to lower the activation energy. | ✅ High Removal Rate: VOC removal rates typically reach 97% ~ 99%, easily meeting strict emission standards. |
| 4. Autothermal Combustion | Low-Concentration Self-Heating: Due to high thermal efficiency + low ignition temperature, the system can sustain itself at lower concentrations. | ✅ Wide Application Range: When VOC concentration reaches 2000-3000 mg/m³, the system can usually operate without auxiliary fuel (Zero-energy operation). |
| 5. Safety | Flameless Combustion: The reaction occurs on the catalyst surface; it is a deep oxidation process without open flames. | ✅ High Safety Profile: The risk of fire or explosion is far lower than in direct combustion devices, making it suitable for temperature-sensitive organic exhaust. |
| 6. Footprint & Lifespan | Compact Structure: Requires a smaller combustion chamber volume than RTOs (due to faster reaction speeds). | ✅ Long Equipment Life: Low-temperature operation reduces thermal stress deformation on the steel structure, making the main body more durable. |
High-alumina aluminum silicate fiber modules (up to 300mm thick) offering superior insulation compared to standard materials.
High-quality poppet valves built for precision, featuring minimal leakage (≤1%), rapid operation (≤1s), and a lifespan of up to 500,000 cycles.
A low-pressure proportional regulating gas burner fueled by natural gas, featuring high-pressure ignition and an impressive 30:1 continuous regulation range.
An advanced PLC (Programmable Logic Controller) system designed for the comprehensive management and automation of waste gas treatment.
High-performance exhaust fans designed for safe and consistent operation in demanding industrial environments.
A critical safety device consisting of an explosion venting disc and a holder, installed on both the RTO furnace and related fan equipment.
Also known as the regenerative filler, this crucial component acts as a highly efficient heat exchanger to maximize thermal recovery within the device.
The core of the system. It utilizes porous materials to significantly lower the required combustion temperature (300~450°C), accelerating the complete oxidation of harmful gases into CO2 and H2O.
Tailor-made for your exhaust gases
We understand that no two waste gases are exactly alike. Fluctuating concentrations, complex compositions, and varied operating conditions—general-purpose equipment often struggles to balance efficiency, safety, and cost. Therefore, we adhere to a customized design philosophy of “one solution for one plant,” providing highly adaptable, reliable, and economical RCO systems based on your specific waste gas characteristics, site conditions, and emission targets.
Identify pollutant types, concentrations, and potential catalyst poisons
✅ Third-party test report or real-time monitoring data:
Evaluate airflow, temperature, humidity, and operational pattern
✅ Exhaust system parameters:
Design equipment layout and integration plan
✅ On-site information:
Prevent poisoning and ensure long-term performance
Lab-scale testing (optional but recommended):
Optimize structure, materials, and control strategy
✅ Finalize based on verified data:
Digitally verify system feasibility
CFD and thermal modeling:
B*P**a GmbH is a mid-sized European pharmaceutical producer specializing in oncology and cardiovascular APIs. As part of its expansion and compliance with the EU Industrial Emissions Directive (IED) and German BImSchG regulations, the company needed to upgrade its existing carbon adsorption system, which struggled with fluctuating solvent emissions and frequent saturation during batch production cycles.
Their primary exhaust stream came from three synthesis reactors and a solvent recovery unit, emitting a mix of methanol, acetone, ethanol, and trace toluene at concentrations ranging from 300–2,500 mg/m³, with an average airflow of 8,000 Nm³/h.
The client had evaluated both RTO and CO systems but found RTO too energy-intensive and standard CO too vulnerable to temperature swings and catalyst deactivation.
While researching “low-temperature catalytic oxidizers for pharma VOCs” online, BioPharma’s engineering team discovered Ever-power’s technical white paper on RCO applications in GMP environments. Impressed by the data on >98% efficiency at 320°C and integrated safety controls, they contacted Ever-power through the website’s inquiry form. After a virtual technical workshop and reference check with an Ever-power client in the Netherlands, they invited our team for an on-site audit.
We delivered a fully engineered 2-chamber Regenerative Catalytic Oxidizer (RCO) with the following key features:
Installation was completed in 10 weeks, including commissioning and operator training.
✅ Destruction Efficiency: Consistently 99.2–99.6% (verified by third-party stack testing)
✅ Energy Savings: 58% less natural gas consumption vs. projected RTO baseline — saving ~€180,000/year
✅ Zero Downtime: Stable operation across 200+ batch cycles over 12 months
✅ Regulatory Approval: Full compliance with BImSchV and EU IED; no non-conformance notices
✅ Carbon Reduction: Estimated 420 tons CO₂e/year avoided due to lower fuel use
“Ever-power’s RCO gave us the perfect balance of compliance, reliability, and cost control. It’s now a benchmark for our other European sites.”
— Dr. Lena Weber, Environmental Compliance Manager, BioPharma GmbH
| Comparison Criteria | Dü*r (EcoDryScrubber + EcoCatalyst) | A*guil Environmental | E**enmann | C*P Clean Technology Partners | Ever-power |
|---|---|---|---|---|---|
| Headquarters | Germany | USA | Germany | Austria | Singapore |
| Primary Market Focus | Automotive, high-end industrial | North America, pharma | Automotive, paint | Chemical, printing | Global (EU, US, SEA, LATAM) |
| Typical VOC Destruction Efficiency | 95–98% | 96–99% | 95–98% | 97–99% | ≥98% (up to 99.5%) |
| Operating Temperature Range | 280–400°C | 250–400°C | 300–420°C | 260–380°C | 250–400°C (optimized catalyst) |
| Thermal Recovery Efficiency | 90–93% | 88–92% | 90–94% | 90–95% | 92–95% |
| Standard Catalyst Type | Pt/Pd (proprietary) | Pt/Pd or base metal | Pt-based | Custom formulations | Custom anti-poison catalysts (Pt/Pd or non-precious) |
| Lead Time (Standard System) | 20–30 weeks | 18–26 weeks | 22–32 weeks | 16–24 weeks | 8–14 weeks |
| CAPEX (Relative Index*) | 100 (benchmark) | 95 | 98 | 92 | 65–75 |
| OPEX (Fuel Savings vs. RTO) | ~50% | ~55% | ~50% | ~55% | 55–60% |
| Modular & Compact Design | Limited (often integrated with lines) | Yes | Moderate | Yes | Yes – skid-mounted, space-saving |
| Local Service & Support | Strong in EU/NA | Strong in NA | Strong in EU | Strong in EU | Global network + rapid remote diagnostics; local partners in 15+ countries |
| Compliance Certifications | CE, ATEX, TÜV | UL, CSA, FM | CE, ATEX | CE, ATEX | CE, ATEX, ISO 14001, ISO 9001, UL available |
| Customization Flexibility | High (but costly) | Medium-High | High | High | Very High – agile engineering, client-driven specs |
* CAPEX Index: Based on comparable 10,000 Nm³/h RCO system for pharma application (2024 market data). Lower = more cost-effective.
While established European and American brands offer reliable technology, Ever-power delivers comparable—or superior—performance at significantly lower total cost of ownership, without compromising on quality or compliance:
Editor: Miya