Rotary Concentration + RTO
The preferred solution for large-volume, low-concentration exhaust gases. A zeolite rotary concentrator first concentrates the low-concentration exhaust into a high-concentration, small-volume stream, which is then fed into an RTO for efficient oxidation, significantly reducing operating energy consumption. This technology is widely used in workshops for home appliance coating, automotive painting, and electronic manufacturing, making it a cost-effective and efficient environmental control solution.
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Keywords: Rotary Concentration + RTO
Rotary Concentration + RTO
1. Product Introduction
For low-concentration, high-volume VOC exhaust gases, the heat generated by the oxidative decomposition of VOCs is insufficient to sustain the RTO’s self-circulating operation, necessitating the consumption of additional fuel. The concentrated rotor–RTO incineration system employs a zeolite-based adsorption rotor to first adsorb the exhaust gas, followed by desorption; the desorbed and concentrated exhaust gas is then fed into the RTO for incineration, thereby significantly reducing the energy consumption associated with the combustion process during exhaust gas treatment.
2. Process Principle
A rotary wheel packed with zeolite adsorbent material is divided into three zones: the adsorption zone, the desorption zone, and the cooling zone. First, low-temperature, low-concentration, high-volume exhaust gas is passed through the adsorption zone for adsorption; the treated, compliance-certified gas is then discharged to the atmosphere. As the wheel rotates, the adsorption zone, now loaded with a certain concentration of VOCs, moves into the desorption zone, where a small stream of fresh air—preheated by waste heat from the RTO at 180°C to 200°C—is blown in reverse to strip the previously adsorbed VOCs, generating a small volume of high-concentration exhaust gas (with a concentration ratio of 10:1 to 20:1). This concentrated exhaust gas is then fed into the RTO for thermal oxidation, ultimately converting it into carbon dioxide and water. Next, the wheel continues to rotate into the cooling zone, where ambient-temperature fresh air from outdoors cools the zone that has just undergone high-temperature desorption, preparing it for more effective subsequent adsorption. After passing through the high-temperature desorption zone, this cooling air becomes hot air; it is further heated by waste heat recovered from the RTO to reach 180°C to 200°C before entering the next cycle of adsorption–desorption–combustion. This process repeats continuously in a closed loop.
3. Process Flow Diagram
4. Performance Characteristics
- High adsorption and desorption efficiency enables the conversion of VOC exhaust gases with originally high air volume and low concentration into those with low air volume and high concentration, thereby reducing the cost of downstream end-of-pipe treatment equipment.
- The pressure drop generated by VOC adsorption on the zeolite rotor is extremely low, significantly reducing electricity consumption.
- The concentration factor can reach 10–20 times, significantly reducing the size of downstream treatment equipment and lowering operating costs.
- The overall system features a modular design, achieving minimal footprint;
- The exhaust gas, after being concentrated by the rotary concentrator, can meet the national emission standards.
5. Scope of Application
①It can be widely used in spray coating and painting for automobiles, vehicles, shipbuilding, and industrial products; in the petroleum, chemical, ink, and dye industries; in the rubber and plastics, leather, adhesive tape, cable, enameled wire, electronics, and printed circuit board industries; in printing, packaging, metal coil coating lines, laminating lines, tinplate printing and can manufacturing, and the textile dyeing and printing industry; in the coating and spraying sectors for building materials, decoration, and furniture; as well as in the pharmaceutical, food, and additive industries.
② Particularly suitable for the treatment of low-concentration, high-volume VOC-containing exhaust gases in large workshops and warehouses.
Related product lines
Production Workshop
RTO furnace
Coating and Line Drying Oven
Coating and Line Drying Oven
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