Energy-Saving and High-Performance Environmental Protection Equipment for VOC Removal and Intelligent Operation

Equipment Description:

I. Process Flow
1. Waste Gas Collection and Pretreatment
Paint spray exhaust flows through a branch pipe into the main pipeline, where it passes through a bag filter to remove paint mist and then is adsorbed by activated carbon to concentrate organic matter.
2. Adsorption-Desorption Cycle
Saturated activated carbon is desorbed by hot air at 120–150°C. The concentrated, high-concentration exhaust (above 2000 ppm) enters the catalytic combustion chamber.
3. Catalytic Oxidation and Emission
The exhaust gas is oxidized and decomposed into CO₂ and H₂O under the action of a catalyst, achieving a purification rate exceeding 95%. Qualified exhaust is discharged through a chimney, with some of the heat energy being recycled into the desorption process.

II. Performance and Features
1. High-Efficiency Purification: VOC removal rate ≥99%, meeting emission standards such as GB16297.
2. Energy-Saving Design: Heat recovery efficiency reaches 60–70%, reducing system operating energy consumption by over 40%.
3. Intelligent Operation: Supports alternating operation of multiple adsorption beds, adapting to continuous or intermittent production. 4. Safe and reliable explosion-proof design, capable of treating flammable and explosive exhaust gases; catalyst lifespan reaches 3–5 years.

III. Scope of Application
Industries: Paint spray booths, foundries, rubber products, plastics processing, etc.
Exhaust Gas Type: Low-concentration (≤1000mg/m³) high-volume exhaust gases such as benzene, toluene, xylene, esters, and ketones.

IV. Operating Precautions
1. Activated Carbon Management: The desorption temperature must be controlled between 80–120°C to avoid high-temperature spontaneous combustion.
2. Catalyst Maintenance: Regularly clean carbon deposits to prevent sulfur and phosphorus compounds from poisoning the catalyst and causing inactivation.
3. Environmental Compatibility: Do not treat exhaust gases containing high humidity, dust, or viscous grease.

V. Comparative Technical Advantages

Main structures and components:

I. Pretreatment System
1. Filtration Device
A multi-stage filtration design (such as G4/F6/F9 filter pads) intercepts particulate matter, paint mist, and other impurities in the exhaust gas, achieving a filtration efficiency of ≥98% and humidity control of ≤80% RH.
A differential pressure monitoring instrument provides real-time feedback on filter media clogging and prompts replacement.
2. Adsorption and Concentration Device
Zeolite Rotor: Hydrophobic zeolite material rotates through adsorption, desorption, and cooling zones to achieve efficient adsorption and concentration of VOCs (adsorption efficiency >90%).
Activated Carbon Adsorption Chamber: Honeycomb activated carbon absorbs low-concentration exhaust gas and releases high-concentration VOCs via 120–150°C hot air during desorption. Multiple chambers can be connected in series and operated alternately.

II. Catalytic Combustion Core System
1. Preheating Device: An electric or gas heater raises the exhaust gas temperature to a catalytic reaction temperature range of 200–400°C, reducing energy consumption. 2. Catalytic Reactor (Catalytic Combustion Bed)
Catalyst Bed: Honeycomb or plate-type precious metal (platinum, palladium) catalysts trigger a low-temperature, flameless oxidation reaction of VOCs (temperature range 200–300°C), achieving a conversion rate ≥95%.
Electric Heating Chamber: Built-in electric heating elements, with a PLC automatically adjusting heating power to ensure precise temperature control and safety.
3. Heat Exchange System: Shell-and-tube or plate-type heat exchangers recover heat from high-temperature post-combustion gases (recovery efficiency 60–70%) for preheating intake and exhaust gases, reducing energy consumption by 30–40%.

III. Auxiliary and Control Units
1. Power System: Centrifugal or axial flow fans provide exhaust gas transport power, suitable for high air volume requirements (e.g., 20,000–50,000 m³/h).
2. Control System: A PLC/industrial computer integrates temperature, pressure, and flow sensors to automatically control the adsorption-desorption cycle, heating power, and valve opening. The touchscreen human-machine interface supports parameter settings, fault alarms, and operational data storage.
3. Safety Components
Flame Arrester: A multi-layered metal mesh or ceramic fiber structure prevents sparks from backdrafting.
Pressure Relief Valve and Temperature Detector: Monitors abnormal internal pressure and temperature of the equipment, triggering emergency shutdown protection.

IV. Emissions and Energy Recovery
1. Purified Gas Emissions
Treatened gas is discharged through a chimney, meeting standards such as GB16297 (VOCs concentration ≤ 30 mg/m³).
2. Heat Recycling
Waste heat can be reused in the factory's drying process or to preheat the fresh air system, achieving an overall energy saving rate of ≥40%.

Features:

1.High cost performance: Based on the customer's product positioning and development strategy, and with economic affordability as the foundation, we achieve the best cost performance.
2.The advanced and meticulous design concept of the equipment, along with the highly automated industrial equipment, showcases the image of a modern and advanced enterprise.
3. It has high adaptability, meeting the current production requirements and reserving room for development, taking into account the needs of increased production and improved quality in the future.
4.Quality compliance strictly adheres to the ISO900 quality management system, with every minute detail of the entire equipment installation being strictly controlled.