Case

I. Three Golden Rules for Industrial Activated Carbon Selection

1. Matching the Molecular Size of Pollutants

• VOCs Control: Choose 4mm pillared carbon (surface area ≥1000 m2/g) with a mesopore ratio >60%, specifically designed to capture large molecules such as benzene and ketones.

• Gold Extraction: 8×30 mesh coconut shell carbon precisely targets Au(CN)₂⁻ complexes, with a gold loading of >320g/ton.

• Heavy Metal Removal: Sulfur-impregnated carbon captures Hg²⁺/Cd²⁺ through chemical bonding, increasing penetration capacity by three times.

2. System compatibility determines lifespan

• High-pressure reactor: Select spherical granular carbon (compression resistance ≥15N/granule), capable of withstanding 20MPa cyclic shock.

• Acidic environment: Use acid-washed pretreated carbon (pH tolerance 1-14), with an ash content <3% to prevent pore clogging.

• Fluidized bed system: Customized uniform particle size carbon (0.5-1mm), reducing pressure drop by 40% and saving ¥80,000/year in energy consumption.

3. Lifecycle cost accounting

Kelin’s thermal regeneration technology achieves an adsorption retention rate of >90% after five cycles, saving a petrochemical company ¥3.6 million annually. Compared to the frequent replacement of cheaper carbon, total costs are reduced by 50%

II. Practical solutions for industrial scenarios

▷ Chemical waste gas treatment

• Pain point: Acrylic acid units produce aldehydes that are difficult to meet emission standards, and traditional carbon loses effectiveness within three months.

• Kelin’s solution: Cu-Zn bimetallic impregnated carbon catalytically oxidizes aldehydes to carboxylic acids, extending lifespan to 18 months. • Results: A Tianjin enterprise reduced its emission concentration from 200ppm to <5ppm, saving ¥1.5 million annually in hazardous waste disposal costs.

▷ Pharmaceutical Purification Process

• Pain Point: Residual pigments in antibiotics lead to product degradation.

• Kelin Solution: Pharmaceutical-grade acid-washed carbon (heavy metals undetectable), with a pore size of 2-5nm for targeted adsorption of pigment molecules.

• Results: An Indian pharmaceutical company increased its first-pass crystallization yield from 82% to 99%, increasing its annual output value by ¥20 million.

▷ Mine Wastewater Reuse

• Pain Point: Combined cyanide/arsenic contamination, resulting in ineffective biological treatment.

• Kelin Solution: Fe⁺-MnO₂ modified carbon, simultaneously adsorbing As⁺/CN⁻, with a penetration rate of 120 bed volumes.

• Results: A Chilean copper mine reduced its recycled water costs by 60%, and reduced its emission reduction fines to zero.

III. Why Do Industrial Giants Choose Kelin Carbon? √ Nanoscale Pore Control Laser etching technology precisely controls pore size distribution (deviation <0.1nm), resulting in a surface area as high as 1500 m2/g—equivalent to seven football fields per kilogram of carbon adsorption.

√ 24-hour Emergency Response 3,000 tons of standing inventory and a global bonded warehouse network provide 72-hour direct delivery to mining areas in North America and Africa. We once airlifted 200 tons of carbon to an Australian gold mine, preventing a complete production halt.

√ Closed-loop Regeneration Value Chain Providing carbon regeneration and waste carbon recycling services, achieving a 92% recovery rate for regenerated carbon and a 90% reduction in hazardous waste. This has reduced carbon costs for one electroplating park by ¥5.4 million annually.