Plastic Multifaceted Hollow Spheres
Briefly introduces the characteristics and applications of multifaceted hollow plastic spheres.
Plastic Multifaceted Hollow Spheres
Plastic multifaceted hollow spheres are a type of high-efficiency random packing material, composed of two hemispheres joined together. The surface of each sphere has multiple fan-shaped or blade-like openings, and the interior is hollow. Due to its large specific surface area, low pressure drop, and resistance to clogging, it is widely used in environmental protection and water treatment.
Structural Features
Spherical shape, surface composed of multiple fan-shaped blades or openings
Hollow interior, with large gaps between the blades
Common materials: PP, PE, PVC
Specifications: Φ25mm, Φ38mm, Φ50mm, Φ76mm
The open structure allows gas and liquid to pass freely through the interior of the sphere, significantly reducing flow resistance.
Performance Comparison with Other Packing Materials
Comparison Items | Multifaceted Hollow Sphere | Pall Ring | Rectangular Saddle Ring |
Specific Surface Area | 150-300 m²/m³ | 100-200 m²/m³ | 100-250 m²/m³ |
Porosity | 85%-90% | 85%-95% | 85%-95% |
Pressure Drop | Low | Medium | Low |
Anti-clogging Performance | Good (Large Channel) | Fair | Medium |
Mass Transfer Efficiency | Medium | High | High |
While the mass transfer efficiency of multifaceted hollow spheres is lower than that of structured packings and Pall rings, their advantages in anti-clogging and low pressure drop are significant.
Core Advantages
Lower Pressure Drop: The spherical structure combined with large-area openings results in low gas flow resistance, suitable for high-volume applications.
Anti-clogging: Wide channels between blades prevent solid particle accumulation, suitable for dusty gases or easily fouling media.
Larger Specific Surface Area: Higher than Pall rings but lower than structured packings, suitable for applications requiring moderate efficiency.
Lightweight: Hollow structure, made of plastic, easy to install, low support requirements.
Fragile: Plastic has good toughness and impact resistance, resulting in low losses during filling and transportation.
Typical Applications
Exhaust Gas Scrubber: Used for scrubbing and absorbing paint spraying exhaust gases, acid mist, and alkali mist. The multifaceted hollow spheres offer low pressure drop and anti-clogging properties, suitable for pretreatment sections of exhaust gases containing paint mist and dust.
Cooling Tower: Used as a water spray packing material, utilizing its high porosity to reduce fan energy consumption for circulating water cooling.
Water treatment degassing tower: Used to remove dissolved gases such as CO₂, O₂, and H₂S from water. PP or PE materials are water-resistant and cost-effective.
VOCs pretreatment: Used as packing material in water scrubbing towers to remove particulate matter and soluble components before high-concentration VOCs waste gas enters activated carbon adsorption or RTO.
Desulfurization tower: In wet desulfurization, multi-faceted hollow spheres are used below the spray layer to evenly distribute airflow and retain liquid.
Material Selection
Material | Applicable Scenarios | Limitations |
PP | Acid and alkali media, organic solvents | Temperature <80℃ |
PE | Low-temperature conditions, cold resistance requirements | Aromatic hydrocarbon resistance is weaker than PP |
PVC | Water treatment, acid mist | Not resistant to organic solvents, temperature <60℃ |
Summary
Multifaceted hollow plastic spheres offer low pressure drop, good anti-clogging, large surface area, and moderate efficiency. Ideal for scrubbers, cooling towers, and degassing towers where pressure drop matters more than efficiency. PP (≤80°C) is standard; PP for organics, PP/PVC for water treatment. We are a Chinese plastic filler supplier. Contact: annayu@169chem.net or WhatsApp +8618909016373.