Efficient Solvent VOCs Capture Solution

Kleanland VOC Capture Solution:
Turning Emissions into Reusable Resources

Volatile Organic Compounds (VOCs) are a group of organic chemicals that easily evaporate at room temperature and are widely found in industrial production and daily life. VOCs can be categorized based on their chemical structure into alkanes, aromatic hydrocarbons, esters, alcohols, ketones, and ethers. They are primarily used in industries such as coatings, inks, adhesives, cleaning agents, and chemical synthesis, serving as essential solvents or raw materials in many manufacturing processes.

VOCs pose significant risks to both human health and the environment. Short-term exposure can cause headaches, nausea, and irritation to the eyes and respiratory system, while long-term exposure may lead to damage to the central nervous system, liver, and kidneys, with some compounds even being carcinogenic. In the atmosphere, VOCs react with nitrogen oxides (NOx) under sunlight, forming ozone and photochemical smog, which contribute to air pollution and global climate change.

As a key production material, the efficient use of organic solvents is crucial for factories. Kleanland VOC Capture Solution utilizes adsorption, condensation, or catalytic technologies to recover VOC emissions from production processes and purify them into reusable organic solvents. This not only reduces VOC emissions and minimizes environmental pollution but also helps factories lower production costs, improve economic efficiency, and promote sustainable development.

Kleanland Rotary Carbon Wheel Adsorption system

Rotary Carbon Wheel Adsorption systems use a continuously rotating wheel packed with activated carbon. As the wheel turns, one section is exposed to the VOC-laden gas stream, where the activated carbon adsorbs the VOC molecules through physical adsorption (via Van der Waals forces). Later, the same carbon is moved into a regeneration zone where, under controlled conditions (often with heated air or a purge gas), the adsorbed VOCs are desorbed and recovered for reuse.

Adsorption Phase

The contaminated air enters the adsorption section.

The rotating wheel, loaded with activated carbon, captures VOCs from the gas stream as it passes through.

Rotation

The wheel continuously rotates, transferring the saturated carbon from the adsorption zone to the regeneration zone.

Regeneration Phase

TIn the regeneration zone, the carbon is exposed to a regeneration medium (typically heated air or purge gas) that desorbs the VOCs.

TThe desorbed VOCs are collected in a recovery system (e.g., a condenser or recovery vessel).

Return Cycle

Kleanland wet electrostatic precipitator Devices' Functions and Procedures

1. Smoke Collection and Cooling

During the glove manufacturing process, exhaust gases containing hot steam and oil fumes are collected by a smoke collection system. These gases are directed through ducts to a cooling unit, where circulating water lowers their temperature to below 30°C. As a result, pollutants condense into larger particles, making them easier to remove.

2. Electrostatic Purification

After cooling, the exhaust gases enter an electrostatic oil smoke removal system. High-voltage electrostatics charge the oil smoke particles, causing them to adhere to the anode plates of the device. The collected particles then flow down to the bottom of the system and are discharged safely through a pressurized pipe.

3. Exhaust Gas Discharge

The purified air is transported by an induced draft fan through ducts and is finally released into the atmosphere through a chimney, ensuring that only clean air is discharged.

4. Fire Safety Features

The system is equipped with an automatic fire safety mechanism. If a fire hazard or temperature anomaly is detected, the fire protection system is instantly triggered. The safety measures include:

• Shutting off power to the electrostatic equipment.
• Quickly closing fire dampers at the equipment’s front and back to contain the fire.
• Opening an electric valve to release firefighting water into the equipment.
• Activating both visual and audible alarms to alert personnel.


Kleanland Successful Projects of VOCs Capture




Industries Have VOCs Emission

1. Coatings and Paints

Contain organic solvents such as benzene, toluene, and xylene, which release VOCs during spraying or drying.

• Products: Solvent-based coatings, paints, varnishes, thinners.
• Typical Applications: Building coatings, automotive painting, furniture surface treatment.

2. Printing and Inks

Solvents in the ink (such as ethyl acetate, acetone) evaporate during printing and drying.

• Products: Offset printing inks, gravure printing inks, cleaning agents.
• Typical Applications: Packaging printing, publication printing, label production.

3. Adhesives and Sealants

Contain volatile components like formaldehyde and ethyl acetate, which release VOCs during curing.

• Products: Industrial adhesives, construction sealants, shoe adhesives.

4. Plastics and Rubber Products

Plasticizers and foaming agents (such as benzene compounds) decompose or volatilize at high temperatures during processing.

• Products: Plastic injection parts, rubber tires, foam materials.

5. Furniture and Wood Products

Adhesives (urea-formaldehyde resin) and surface coatings release formaldehyde and benzene compounds.

• Products: Engineered wood, wooden furniture, composite flooring.

6. Textiles and Dyeing

High-temperature treatment in stenter machines releases formaldehyde, organic silicon, and other VOCs.

• Products: Dyed fabrics, coated textiles, exhaust from fabric finishing processes.

7. Petrochemical Products

Refining, storage, transportation, and usage processes lead to volatilization.

• Products: Gasoline, diesel, lubricants, solvents (such as xylene, styrene).

8. Electronics Manufacturing

VOCs evaporate from cleaning agents (isopropanol), solder flux, and photoresists.

• Products: Circuit boards, semiconductor packaging, display screens.

9. Automotive Manufacturing

Solvent-based coatings in paint shops and adhesives in interiors release benzene, toluene, and other VOCs.

• Products: Automotive coatings, interior materials, adhesives.

10. Pharmaceuticals and Cosmetics

Ethanol, acetone, and other solvents used in production volatilize during packaging.

• Products: Drug synthesis, perfumes, nail polish.

Heavy VOC emission Industries and Processings (Solvent relative)

1. Flexible PVC Products

Cables and Wire Insulation: strong>PVC resin blended with plasticizers (e.g., phthalates) creates flexible materials used for cable sheathing and insulation. The high dielectric strength and flexibility make it ideal for electrical applications.
Hoses and Tubing: Medical tubing, automotive hoses, and industrial piping leverage PVC's chemical resistance and durability when combined with solvents or plasticizers.

2. Injection-Molded Parts

Consumer Goods: Items like toys, containers, and household fittings are produced using PVC resin. The addition of solvents or plasticizers improves flow during injection molding, reducing defects like "鱼鳞纹" (fish-scale patterns) and ensuring smooth surfaces.

3. Films and Sheets

Packaging and Flooring: PVC films (e.g., cling wrap) and sheets (e.g., vinyl flooring) are formed by calendering or extrusion. Plasticizers enhance flexibility, while solvents help in achieving uniform thickness.

4. Coatings and Adhesives

Protective Coatings: PVC solutions in solvents like tetrahydrofuran (THF) are used for dip-coating tools, wire racks, or fabric to create waterproof layers.

5. Automotive Components

Seals and Dashboards: Flexible PVC blends are molded into car interior parts, offering resistance to wear and environmental factors.

6. Medical Devices

Blood Bags and IV Tubing: Medical-grade PVC, softened with non-toxic plasticizers, is critical for disposable medical equipment due to its sterility and flexibility.

7. Footwear and Apparel

Shoe Soles and Artificial Leather: PVC mixed with plasticizers produces synthetic leather and durable shoe components, balancing flexibility and structural integrity.

8. Construction Materials

Window Profiles and Pipes: Rigid or semi-rigid PVC formulations are extruded into profiles for windows, pipes, and fittings. Solvents aid in processing, while additives improve UV resistance.

9. Inflatable Products

Toys and Mattresses: PVC plastisols (resin dispersed in plasticizers) are used in slush molding to create air-filled products like inflatable pools or toys.

10. Specialty Applications

Adhesive Tapes and Labels: PVC solutions are coated onto substrates to produce durable tapes or labels with strong adhesion properties.

10.1. Flexible PVC Products (High DOP content for softness)

These are made by adding high amounts of DOP or other plasticizers to PVC resin:

• PVC Gloves (medical, industrial, household) – via dipping
• PVC Artificial Leather (used in furniture, car seats, and bags) – via calendering
• PVC Inflatable Products (toys, swimming rings, air mattresses) – via heat welding
• PVC Flexible Hoses & Tubing (for medical use, fuel lines) – via extrusion
• PVC Cable Insulation & Sheathing – via extrusion
• PVC Film & Cling Wrap (food-grade, industrial applications) – via calendering/blow molding

10.2. Semi-Rigid & Rigid PVC Products (Lower DOP content or solvent-based processing)

When solvent (D70, D80) or a lower amount of plasticizer is used, the PVC remains semi-rigid or rigid:

• PVC Solvent-Based Adhesives – for bonding plastics, rubber, and leather
• PVC Coatings – used for fabric coatings, synthetic flooring, and waterproof layers
• PVC Molded Shoe Soles – via injection molding
• PVC Foam Products (for insulation, soundproofing) – via foaming extrusion
• PVC Sheets & Boards (semi-rigid panels for signage, construction) – via calendering
• PVC Toys & Figurines – via rotational or injection molding

10.3. PVC-Based Solvent Casting & Coatings

By dissolving PVC resin in D70/D80 solvents, it can be used for:

• PVC Inks & Printing Coatings (on banners, tarps, textiles)
• PVC Paints & Protective Coatings (used for corrosion resistance)
• PVC Dipping Compounds (to coat tool handles, grips, or rubberized textures)

Kleanland VOC Capture Equipment

Device Series	Airflow Handled	ESP Cell Type	Filtration Rate	Product Details
Dual-drive Industrial ESP	6K-72K m3/h	Wide Polarity Spiked Plate Type	95%	Click to check details>>
Honeycomb Industrial ESP	4k-52k m3/h	Honeycomb Type	95%	Click to check details>>
Twice-Puri IndustrialESP	16K-72K m3/h	Plate Collector plus Tubular Collector	90-95%	Click to check details>>