Plate Air Preheater for VOC Catalytic Combustion Furnace

All-welded plate air preheater is the core waste heat recovery equipment matched with VOC catalytic oxidation furnace (CO furnace). It recovers high-temperature clean exhaust heat after VOC catalytic decomposition to preheat low-temperature incoming waste gas, drastically cutting auxiliary gas/electric heating consumption, realizing self-sustaining operation of catalytic furnace, and supporting enterprises to meet VOC emission standards while reducing energy costs.

Working Principle for VOC Catalytic Furnace

1. Cold Side (Untreated VOC Waste Gas)

Low-temperature VOC waste gas (20–60℃) flows through one side of corrugated plate channels, absorbs heat and rises to 220–300℃ (catalyst reaction initiation temperature).

2. Hot Side (Clean Catalytic Flue Gas)

High-temperature purified exhaust gas (300–450℃ after catalytic reaction) flows countercurrent on the other plate side, releases residual heat.

3. Closed independent partition completely separates VOC raw gas and clean flue gas, zero cross leakage to avoid explosion risk of mixed combustible gas.

4. Preheated VOC gas enters catalyst chamber for low-temperature oxidative decomposition; cooled exhaust gas is discharged after simple treatment.

Core Unique Advantages for VOC Catalytic Combustion

1. Ultra-High Energy Saving, Realize Self-Thermal Balance

Recycle most exhaust heat to preheat incoming VOC gas. When VOC concentration ≥500ppm, the furnace can maintain catalytic reaction temperature without auxiliary heating, save 80%+ natural gas/electric heating cost, annual energy saving is remarkable.

2. High Safety, Zero Cross-Media Leakage

Full-welded airtight structure, gas leakage rate ≤0.5%. Isolate combustible untreated VOC gas and high-temperature clean flue gas thoroughly, eliminate fire & explosion risk, meet explosion-proof standard of VOC environmental protection equipment.

3. Compact Size, Easy Old Furnace Retrofit

Heat exchange density is 3–5 times tubular preheater, small floor space, easy to install on existing CO catalytic furnace without large civil transformation, ideal for factory VOC equipment renovation projects with limited workshop space.

4. Low Operation & Maintenance Cost

Smooth corrugated plate surface not easy to stick solvent tar; modular drawing design for quick washing; no wearing vulnerable parts, service life 8–12 years, far longer than gasket plate heat exchanger.

5. Low Secondary Pollution, Meet Environmental Standards

Lower auxiliary fuel consumption reduces CO₂ and NOₓ generation; stable heat recovery ensures full VOC decomposition (removal efficiency ≥98%), fully satisfies national industrial waste gas emission regulations.

Application Scenarios

Support all medium-low concentration VOC catalytic combustion systems:

- Coating & Automotive Painting Line VOC catalytic furnace

- Printing, ink, adhesive lamination waste gas CO equipment

- Pharmaceutical, fine chemical solvent waste gas treatment

- Plastic, rubber, packaging printing organic exhaust recovery

- Wood furniture paint mist & odor catalytic oxidation system