Recently, CADAIR’s bespoke VOCs control project for a renowned international ink manufacturer has been successfully accepted. Following treatment, all pollutant emission indicators exceed the requirements of the GB 37824-2019 “Emission Standards for Air Pollutants from Coatings, Inks and Adhesives Industry“, Notably, non-methane hydrocarbons (NMHC) fell below the national standard at under 40mg/m³, establishing a replicable technical model for VOCs management within the fine chemicals sector.
Client Spotlight: A Century-Old Brand’s Environmental Upgrade Journey
In a world where colour flows, premium digital inks empower diverse industries—from packaging and electronics to decoration—through exceptional adhesion, vibrancy, and eco-performance. As an internationally renowned ink manufacturer with 116 years of heritage, this enterprise holds global leadership in the field. Yet behind this vibrant palette, the complex organic waste gases generated during production presented a critical hurdle for green manufacturing, hindering the company’s pursuit of sustainable production goals.
After evaluating multiple environmental solutions providers, CADAIR emerged as the strategic partner through its deep industry expertise, bespoke technical solutions, and extensive track record of successful implementations. Together, they advanced the construction and deployment of an exhaust gas treatment system, helping establish a new environmental benchmark within the ink industry.
Treatment Challenges: Rigorous Tests Under Complex Conditions
This treatment project involves a total airflow volume of 82,500 m³/h, with VOC concentrations fluctuating between 200–820 mg/m³. Key pollutant components include ethyl acetate, n-propyl acetate, anhydrous ethanol, isopropanol, n-propanol…
These components exhibit high emission intensity, complex composition, and significant boiling point variations. Furthermore, the presence of dust in the exhaust poses substantial challenges to collection efficiency, treatment safety, and system stability. Concurrently, the client imposed stringent final emission requirements: non-methane hydrocarbons ≤ 40 mg/m³, while also demanding long-term operational reliability and economic viability.
Customised Solution: High-Efficiency Synergy of Pre-Treatment + Zeolite Rotor + CO Combustion
To address these complex conditions, the CADAIR team developed a bespoke solution combining ‘pre-treatment + zeolite rotor adsorption concentration + CO combustion’ for efficient purification of multi-component VOCs and energy recycling.
- Exhaust Gas Flow Rate: 82,500m³/h
- Adsorption Efficiency: ≥96.5%
- Concentration Ratio: 6–8 times
Process Flow
Ink exhaust gases undergo pre-treatment to remove particulates before entering the zeolite rotor for adsorption and concentration, achieving compliant emissions. Upon rotor saturation, hot air is employed for desorption. The resulting high-concentration exhaust enters the CO oxidation furnace, where it is converted into H₂O and CO₂ before compliant discharge.
While century-old ink brands illuminate the world with colour, CADAIR is safeguarding every breath of fresh air through professional environmental technology. We firmly believe that true high-end manufacturing lies not only in exceptional product quality but also in responsibility and commitment to the ecological environment.
Guided by our brand philosophy ‘Working in Nature’, CADAIR is dedicated to providing scientific, green, and sustainable environmental solutions for global industrial enterprises, empowering more businesses to achieve environmental upgrades and high-quality development.
