V0 PPs Fire Retardant Activated Carbon Box

Product Model	V0 Flame Retardant PP Activated Carbon Adsorption Box
Category	Waste Gas Treatment Equipment
Reference Price	Price on request

Hot Customizable for Working Conditions 10 Technical Parameters

Product Overview

The V0 PPs flame-retardant activated carbon box is an activated carbon adsorption unit fabricated from V0 flame-retardant grade PPs sheets, used to treat VOCs organic exhaust gas and odors. Activated carbon is loaded in layers inside the box; as the exhaust gas passes through the carbon bed, organic pollutants are adsorbed and purified. Compared with ordinary PP carbon boxes, its most distinctive feature is that the box body is made of V0 flame-retardant grade PPs sheets, delivering better flame-retardant performance while retaining the advantages of PPs material—corrosion-resistant to acids and alkalis, good flexibility, and easy welding and fabrication. It is suitable for indoor exhaust gas treatment applications where organic exhaust gas is present together with anti-corrosion and relatively high fire-protection requirements.

Activated carbon adsorption of organic exhaust gas involves adsorption heat and a certain fire risk, and ordinary combustible plastic box bodies provide insufficient fire protection when used indoors and in equipment rooms. In vertical burning tests, V0 flame-retardant grade PPs sheets self-extinguish rapidly once removed from the flame and produce no flaming drips, indicating a high flame-retardant rating. Using this material for the carbon box body, ducts, and internal components reduces the risk of the equipment itself being ignited and of flame spread, making it more suitable for installation inside workshops, on equipment floors, and close to production equipment. PPs sheets offer good flexibility and are easy to hot-melt weld, and can be fabricated into various non-standard sizes and drawer structures according to the airflow and site conditions.

Xicheng Environmental Protection can design V0 PPs flame-retardant activated carbon boxes according to the treated airflow, VOCs composition, and on-site space. The box is equipped with honeycomb or granular activated carbon drawers, airflow distribution, and sealing structures; the box sheets, welding rods, and internal components are all made of matching V0 flame-retardant PPs, corrosion-resistant to acids and alkalis with a high flame-retardant rating. The inlet and outlet ports are matched with PPs ducts, making the unit suitable for the adsorption and purification of indoor organic exhaust gas and acid-alkali organic mixed exhaust gas in industries such as chemicals, electroplating, electronics, and printing.

Working Principle

The purification principle of the equipment remains physical adsorption by activated carbon: driven by the fan, organic exhaust gas enters the box body; as it passes through the honeycomb or granular activated carbon bed, VOCs molecules diffuse into the micropores of the activated carbon and are adsorbed on the surface, and the purified gas is discharged. Once the activated carbon is saturated, the drawers are pulled out for replacement. The V0 PPs box body itself does not participate in purification; its role is to provide a corrosion-resistant, flame-retardant, and sealed reaction space, while the drawer structure ensures that the airflow passes uniformly through the carbon bed without short-circuiting.

The fire-protection principle of V0 flame retardancy is that the flame-retardant system added to the material suppresses combustion upon contact with a fire source, allowing the sheet to self-extinguish rapidly after leaving the flame and preventing burning drips from igniting objects below, thereby keeping the fire risk of the equipment body at a low level. It should be emphasized that the flame-retardant box body reduces the risk of the equipment being ignited and of fire spread, but cannot eliminate the adsorption heat and safety risks inherent in the activated carbon adsorption of organic matter; inlet gas concentration and temperature must still be controlled, and temperature monitoring and fire-fighting measures must be provided. The anti-corrosion principle derives from the polypropylene matrix: PPs sheets resist corrosion by acids, alkalis, and salts, so the box body neither rusts nor corrodes when treating organic mixed exhaust gas containing acids and alkalis. The weld seams use V0 flame-retardant welding rods of the same material, ensuring continuous anti-corrosion and flame retardancy throughout.

Structural Composition

The V0 PPs flame-retardant activated carbon box consists of a V0 flame-retardant PPs box body, activated carbon drawers, activated carbon, distribution plates, an inspection door, seals, and support legs. The box body is formed by cutting, bending, and hot-melt welding of V0 PPs sheets, with reinforcing ribs on the outer walls; both the sheets and the welding rods are of V0 flame-retardant grade. Guide rails and activated carbon drawers are installed in layers inside the box, and the drawer frames and grilles are also made of flame-retardant PPs.

The activated carbon drawers are filled with honeycomb or granular activated carbon; the windward and leeward faces are flame-retardant perforated plates, and sealing strips are embedded around the drawers, which are pressed tight after insertion to prevent airflow short-circuiting and air leakage. An airflow distribution plate is provided on the air inlet side; the box body is fitted with inlet and outlet flanges for connection to PPs ducts, and is equipped with an inspection door, a differential pressure gauge interface, a temperature monitoring port, and a sampling port, with support legs or a base at the bottom. An external reinforcing frame can be added to bear the weight of the carbon bed; the overall structure is designed according to the equipment's fully loaded carbon weight, with secure lifting and support. The matching ducts and dampers are likewise made of V0 PPs material to ensure consistent flame retardancy across the system.

Specifications and Models Table

The table below compares the V0 PPs carbon box with the ordinary PP carbon box for selection according to fire-protection requirements.

Item	V0 PPs Carbon Box	Ordinary PP Carbon Box
Flame-retardant rating	V0 grade, self-extinguishing after flame removal	Generally not flame-retardant
Corrosion resistance	Resistant to acids, alkalis, and salts	Resistant to acids, alkalis, and salts
Application	Indoor, high fire-protection requirements	Outdoor or low requirements
Fabrication	Easy welding of non-standard sizes	Easy welding

Product Features

The V0 PPs flame-retardant activated carbon box is anti-corrosive and flame-retardant, with a high safety level and flexible fabrication, making it a safety-oriented unit for indoor organic exhaust gas adsorption. Its main features are as follows.

V0 flame-retardant grade PPs box body, self-extinguishing after flame removal without ignition or fire spread
Corrosion-resistant to acids, alkalis, and salts, suitable for organic and acid-alkali mixed exhaust gas
Sheets, welding rods, and internal components all flame-retardant as a matched set, with no fire-protection gaps
PPs offers good flexibility and easy welding; non-standard sizes are easy to fabricate
Drawer-type activated carbon loading for easy replacement and reliable sealing
Optional temperature and differential pressure monitoring for enhanced operational safety
Matched with PPs ducts and dampers for unified anti-corrosion and flame retardancy across the system

Box material	V0 rated flame retardant PP boards
Welding Electrode Material	V0 Flame Retardant PP Welding Rod
Adsorbent materials	Honeycomb / Granular Activated Carbon
Object Processing	`VOCs organic exhaust gas`
Flame Retardancy Rating	V0 Level
Corrosion resistance performance	Acid and Alkali Salt Resistant
Material Properties	Flexible and extensible, easy to weld
Filling Method	Drawer type
Monitoring Configuration	Temperature / Differential Pressure Optional
Specifications and Features	Supporting Custom Non-Standardization

Application Industries

Adsorption and purification of VOCs in indoor factory layouts
Organic gas emission control with anti-corrosion requirements in chemical workshops
Indoor activated carbon adsorption equipment in electronics factories and semiconductor workshops
Flame-retardant carbon boxes installed near printing and coating production lines
Adsorption devices with high fireproofing requirements in equipment layers and basements
Anti-corrosion adsorption systems for mixed acid/alkali mists and organic gases
Indoor exhaust gas treatment projects compatible with PPs flame-retardant ducts

Typical Process Locations

The V0 PPs flame-retardant activated carbon box is installed indoors or in equipment layers, located after pretreatment (filtering, washing, demisting) and before/after anti-corrosion fans. The exhaust gas is pretreated to remove dust, mist, and acid/alkali mists before entering the carbon box for VOC adsorption. The purified gas is discharged through PPs ducts and stacks. Space is left around the equipment for drawer extraction and carbon material replacement. The layout meets fire distance and fire lane requirements, and all connections with other equipment and ducts use V0 flame-retardant PPs materials to avoid flammable breaks in the system.

During installation, the box is mounted on a foundation and legs based on full carbon weight. After welding and assembly, the box seams and drawer seals are inspected, and the V0 flame-retardant certification documents for the plates are verified. Before operation, the activated carbon is loaded and recorded, and temperature and pressure differential monitoring are set up. During operation, the inlet organic concentration and temperature are controlled within safe limits to avoid direct high-concentration gas entry into the carbon box. Regularly check the carbon layer temperature, pressure differential, and outlet concentration. Saturated activated carbon is replaced and disposed of according to hazardous waste regulations. During shutdown, the carbon layer is purged with fresh air, and appropriate fire protection facilities are installed near the equipment.

V0 rating indicates that the enclosure material self-extinguishes quickly upon contact with a flame in standard combustion tests, demonstrating strong flame retardancy. This significantly reduces the risk of the enclosure being ignited by external heat sources and the spread of flames along the equipment. However, it does not guarantee that the equipment will never catch fire. Activated carbon adsorbs organic substances, releasing adsorption heat. When adsorbing high concentrations of VOCs or when the bed fails to dissipate heat properly, the carbon layer may heat up. Both activated carbon and organic substances are combustible. Therefore, even with V0-rated enclosures, it is still essential to control inlet concentration and temperature, implement temperature monitoring and alarms, and adopt fire protection and shutdown purging measures. Do not mistake material flame retardancy for process safety. The fire protection design of the entire adsorption system must comply with regulations.

Equipment installed indoors, on equipment floors, in basements, or in areas with high fire protection requirements, and handling organic exhaust gas, should prioritize the selection of V0 PPs flame-retardant carbon boxes, paired with V0 flame-retardant ductwork and dampers to meet building fire protection and safety requirements. When equipment is independently installed outdoors, with sufficient fire separation distance from the factory, and in areas with lower fire protection requirements, standard PPs or other material carbon boxes can be selected to control costs. Regardless of the material, safety measures for activated carbon adsorption processes cannot be omitted. Specific configurations should be based on building fire protection design and local review requirements, with V0 configurations recommended for critical locations.

The V0 PPs board is made by adding a flame retardant system to polypropylene, with the main material still being PPs. Its acid, alkali, and salt corrosion resistance performance is basically comparable to that of ordinary PPs, and it can handle general acid and alkali mists and organic exhaust gases without issues. However, some strong oxidizing agents or high-concentration special organic compounds may affect the material or flame retardant components. When treating complex mixed exhaust gases, the manufacturer should be provided with the gas composition, concentration, and temperature to verify material compatibility, and immersion testing may be necessary if required. When selecting materials, attention should be paid to both the flame retardant test report and corrosion resistance applicability—neither should be considered in isolation.

V0 PPs housing is acid and alkali resistant, capable of contacting acidic and alkaline mist gases. However, it is not recommended to allow large amounts of water mist or acidic and alkaline mist to directly enter the activated carbon layer in the process: liquid droplets will cause the activated carbon to become damp, block pores, and reduce adsorption capacity. Acids and alkalis may also react with the carbon or adsorbed organic substances. The proper approach is to first pass through spray washing and demisting to remove acidic and alkaline mist, then enter the activated carbon housing for adsorption of residual organic compounds, forming a washing plus adsorption combination process. The carbon housing should be in a dry or low-humidity airflow. This approach leverages the corrosion resistance of the PPs housing while protecting the activated carbon.

Need to provide the following parameters: airflow rate, VOC components and concentration, waste gas temperature and humidity, whether it contains acid-base mist and dust, required purification efficiency and emission standards, installation location (indoor or outdoor) and available space, flame retardancy level requirements for the housing and ductwork, and the orientation and size of the inlet and outlet ports. The airflow rate determines the cross-sectional area of the housing and the number of drawers, the components determine the type and loading amount of activated carbon, and indoor installation determines the V0 flame retardant configuration and external dimensions. After providing the parameters, the manufacturer designs based on the residence time and carbon layer thickness, and provides matching V0 flame retardant ductwork, dampers, and monitoring instruments.

Acceptance includes aspects of materials, structure, and performance. For materials, verify the V0 flammability rating certificate for the box body, welding rods, and internal components, and take samples for retesting if necessary. For structure, inspect weld quality, drawer quantity and sealing, airflow distribution plate, maintenance door, flange, and legs to confirm full carbon strength. For performance, test equipment resistance, inlet and outlet pollutant concentrations, and purification efficiency under design airflow, check if temperature and pressure differential monitoring are normal. For documentation, verify the activated carbon certificate of conformity, loading quantity, and replacement log requirements. The flammability rating certificate and treatment efficiency test report are important documents for indoor engineering acceptance.

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