Views: 0 Author: Site Editor Publish Time: 2025-09-23 Origin: Site
Molecular sieves are widely used in gas drying and solvent purification due to their precise selective adsorption properties. To achieve the best cost-performance ratio, procurement should match product grade with specific application needs.
1. Define Adsorption Requirements
Industrial Gas Drying: For high-humidity gases such as compressed air, 4A molecular sieves are preferred. They offer water uptake above 20% and low regeneration temperature (200–300℃), ideal for continuous operation.
Special Gas Removal: For deep CO₂ removal in air separation units, 13X molecular sieves are recommended. Key parameters include crush strength (≥85 N/bead) and water adsorption capacity (≥26%). Advanced domestic products have further enhanced CO₂ capacity through pore optimization.
Low-Temperature Operations: Premium sieves maintain high efficiency below –20℃, suitable for LNG pretreatment.
2. Differentiate Industry Standards
Power Industry: Focus on dust resistance and thermal stability to reduce maintenance.
Chemical Industry: Emphasize acid resistance (stable at pH 2 for 24h) and selective adsorption to prevent catalyst poisoning.
Food & Pharmaceutical: Require certified products with heavy metal content <1 ppm to ensure safety.
3. Assess Supplier Capability
Large-scale factories (annual output >10,000 tons) ensure batch stability, while SMEs offer flexibility for custom grades. Technical strength can be measured by patent ownership and customer case studies.
4. Sample Testing
Request ≥500 g samples and conduct 72-hour tests under simulated conditions. Verify dynamic adsorption capacity at 2 m/s gas flow and 80% humidity; top domestic products should reach ≥90% of rated performance.
About Chemxin:
Guangzhou Chemxin Environmental Material Co., Ltd. has specialized in the production of molecular sieve, molecular sieve activated powder, activated alumina, and ceramic ball for over 23 years. Our factory covers 50,000 square meters and employs more than 250 staff members, including a dedicated R&D team committed to innovation and quality.
If you have any inquiries or requirements, please feel free to contact us at any time. We are here to provide you with professional solutions and reliable service.
E: info@chemxin.com
www.chemxin.com
