Ceramic raschig ring packings are critical structured packing elements in chemical processing, offering efficient gas-liquid contact and robust durability. This article provides comprehensive technical data, performance metrics, and practical applications to guide industries in selecting optimal separation equipment.
.jpg)
Technical Specifications and Material Properties
Manufactured from high-purity alumina ceramics, ceramic Raschig rings feature uniform porosity and precise dimensional accuracy. Key material properties include a density of 2.3-2.5 g/cm³, compressive strength over 60 MPa, and thermal shock resistance up to 1000°C. Standard dimensions range from 10mm to 75mm, with 25mm, 38mm, and 50mm being the most widely used. Their hollow cylindrical structure (height-to-diameter ratio = 1:1) ensures balanced gas distribution and stable liquid flow, maximizing surface area (180-280 m²/m³) for efficient mass transfer.
Performance Metrics and Industrial Applications
Performance metrics highlight their operational advantages: mass transfer efficiency (HETP 0.6-1.5m), low pressure drop (0.3-1.8 kPa/m), and high throughput capacity. These features make them indispensable in distillation columns (e.g., ethanol and methanol production), absorption towers (e.g., H₂S removal in refineries), and extraction systems (e.g., pharmaceutical intermediate separation). In the chemical industry, they replace random packings to reduce equipment volume by 20-30% and lower energy consumption by 15-25%. For environmental protection, they are applied in wastewater treatment to enhance pollutant degradation efficiency.
Common Questions About Ceramic Raschig Rings
1. Q: What is the maximum operating temperature for ceramic Raschig rings?
A: They typically handle temperatures up to 1200°C, making them suitable for high-temperature chemical processes.
2. Q: How do ring sizes impact separation performance?
A: Smaller rings (10-25mm) improve mass transfer precision for fine separation, while larger rings (50-75mm) reduce pressure drop for high-flow applications.
3. Q: Are ceramic Raschig rings compatible with organic solvents?
A: Yes, their alumina composition resists most organic solvents, ensuring long-term stability in corrosive environments.
