Ceramic-Rashig Ring
Ceramic Raschig Rings are one of the most widely used random column packings for mass transfer applications. Designed with an equal length-to-diameter ratio, these rings provide a large surface area and high void space, optimizing liquid-gas distribution while minimizing pressure drop.
Manufactured from high-grade industrial ceramic materials, Npceram Ceramic Raschig Rings exhibit outstanding chemical stability, enabling them to withstand all organic solvents and inorganic acids (except hydrofluoric acid) even at elevated temperatures.
- Superior Corrosion Resistance: Unaffected by organic solvents, salts, and strong mineral acids.
- High Thermal Shock Resistance: Maintains structural integrity under severe temperature fluctuations.
- Low Pressure Drop: High void fraction ensures efficient gas flow and energy savings.
- High Mechanical Strength: Excellent crush strength prevents breakage during column loading and operation.
- Optimal Liquid-Gas Distribution: Ensures uniform wetting and high contact efficiency.
1. Material & Composition:
- Material Type: Chemical Porcelain / High-Alumina Ceramic.
- Alumina Content (Al2O3Al_2O_3): 23% to 99.5% (Depending on the specific grade selected for the application).
- Color: Off-white / Ivory.
- Structure: Dense, non-porous structure to prevent liquid retention.
2. Physical Properties:
- Bulk Density: 500 – 750 kg/m3kg/m^3 (Depending on size and packing type).
- Water Absorption: ≤ 0.5% (Ensures low liquid hold-up in the tower).
- Porosity: High void fraction (65% – 75% for efficient gas-liquid contact).
- Specific Surface Area: 100 – 800 m2/m3m^2/m^3 (Varies significantly by ring size).
3. Thermal Properties:
- Maximum Operating Temperature: Up to 1100°C (Standard grade) / 1600°C (High-purity Alumina grade).
- Thermal Shock Resistance: Excellent; capable of withstanding rapid temperature fluctuations.
- Coefficient of Thermal Expansion: Low, preventing mechanical stress cracks in high-heat environments.
4. Chemical Resistance:
- Acid Resistance: ≥ 99.8% (ASTM C515 standard; extremely stable against inorganic and organic acids, except Hydrofluoric acid).
- Alkali Resistance: Highly resistant to most alkaline solutions.
- Chemical Stability: Non-reactive with organic solvents and process chemicals.
5. Mechanical Properties:
- Crushing Strength: High mechanical integrity to support bed weight in tall distillation columns.
- Hardness: Resistant to mechanical abrasion and erosion caused by high-velocity gas flows.
6. Geometric Specifications (Standard Sizes):
- Available Outer Diameters: 6mm, 10mm, 13mm, 15mm, 25mm, 38mm, 50mm, 75mm.
- Dimensional Tolerance: ± 2% standard industry tolerance for industrial packing.
- Wall Thickness: Engineered for optimal balance between weight and strength.
- Petrochemical & Refining: Acid gas absorption, stripping, and distillation towers.
- Chemical Processing: Chlorine gas drying, sulfuric acid plants, and solvent recovery.
- Environmental Technology: Scrubber towers for air pollution control and VOC removal.
- Thermal Applications: Support media for catalyst beds and heat exchangers.
Optimized for low pressure drop and high durability, ensuring maximum process efficiency and extended operational lifespan for industrial columns.
