Recycle Solvent by Recovering VOCs

VOCs (Volatile Organic Compounds) are organic chemicals that easily evaporate at room temperature and are widely present in industrial production and daily life. Based on their chemical structure, VOCs include alkanes, aromatic hydrocarbons, esters, alcohols, ketones, and ethers. They play a crucial role in industries such as coatings, inks, adhesives, cleaning agents, and chemical synthesis, serving as essential solvents or raw materials in various manufacturing processes. However, their widEspread use also leads to significant emissions, posing risks to both human health and the environment.

In the production of flexible and semi-rigid PVC products, solvents like D70, D80, or plasticizers such as DOP are used to achieve the desired material properties through processes like dipping, extrusion, injection molding, and calendering. While these solvents enhance production efficiency, they also release VOCs, which can cause serious environmental pollution and workplace hazards if not properly managed. High-plasticizer PVC products include gloves, artificial leather, inflatable toys, hoses, cable insulation, and films, while lower-plasticizer or solvent-based formulations are used in adhesives, protective coatings, shoe soles, foam products, sheets, boards, and toys.

To address VOC emissions, effective capture and recovery technologies are essential. Prolonged exposure to VOCs can harm human health, causing respiratory issues, organ damage, and even cancer. Additionally, VOCs contribute to atmospheric pollution by reacting with nitrogen oxides (NOx) to form ground-level ozone and photochemical smog. Kleanland’s VOC Capture Solution utilizes adsorption, condensation, and catalytic technologies to recover VOC emissions and convert them into reusable solvents. This approach not only reduces pollution and protects workers but also lowers production costs, enhances economic efficiency, and supports sustainable industrial development.

Carbon Absorption vs. RTO for VOC Recovery

Captures VOCs by adsorbing them onto activated carbon. The VOCs can then be desorbed, condensed, and reused in production, making this method a true recovery solution.

Destroys VOCs by burning them at high temperatures (750–1,000°C). While effective at eliminating emissions, it does not recover VOCs for reuse—essentially converting valuable solvents into CO₂ and water vapor.

RTO Burns away VOCs Like Burning Money

If VOCs can be recycled, then using an RTO to burn them away is like burning money. While RTOs are effective at destroying VOCs, they don't capture or reuse the valuable chemicals. Instead, they incinerate them, wasting the potential for recovery and reuse. In contrast, VOC recovery methods like carbon absorption allow for the recycling and reuse of VOCs, turning waste into a resource and offering long-term economic and environmental benefits.

Kleanland Turns VOCs into Gold

Adsorption Process (VOC Capture)

Adsorption is a surface phenomenon where gas-phase VOCs adhere to the surface of a solid (activated carbon) due to Van der Waals forces and capillary condensation in micropores. Activated carbon has a high surface area and porous structure, allowing it to effectively trap VOC molecules. The efficiency of adsorption depends on temperature, pressure, VOC concentration, and the nature of the VOCs (e.g., polarity, molecular weight).

Desorption Process (VOC Recovery & Carbon Regeneration)

Desorption is the reverse process of adsorption, where VOCs are removed from the activated carbon using heat, steam, vacuum, or inert gases. This process allows the carbon to be reused and the VOCs to be condensed and recovered for reuse.

Time Proven Successful Cases of Kleanland

Tarp manufacturers

medical glove manufacturers

flooring manufacturers

tile manufacturers

metal processing factories

ect..