The weight of 1 cubic meter CPVC cascade ring packings for chemical use typically ranges from 350 to 420 kg. This value is determined by CPVC's inherent density (1.35–1.45 g/cm³) and the packing's unique stepped structure, which minimizes material usage while preserving high传质效率 (mass transfer efficiency). The truncated top edge and downward extension of cascade rings reduce overall volume, making them lighter than traditional random packings while maintaining optimal performance.
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Key Factors Influencing the Weight of 1 Cubic Meter CPVC Cascade Ring Packings
Several critical factors affect the weight of 1 cubic meter CPVC cascade ring packings:
1. Material Density: CPVC, a chlorinated polyvinyl chloride copolymer, has a higher density than common plastics like PP or PVC (1.35–1.45 g/cm³ vs. 0.9–1.4 g/cm³). This contributes to the packing's base weight, though its chemical resistance often justifies the trade-off.
2. Structural Geometry: The cascade ring's design—with a height of 50–100 mm, diameter of 25–76 mm, and high void fraction (93–96%)—reduces material consumption. The stepped edge, for instance, lowers packing height by 10–15% compared to standard rings, directly impacting overall weight.
3. Production Process: Precision injection molding ensures uniform ring dimensions, avoiding excess material. Tighter tolerances (±0.2 mm) minimize waste, maintaining consistent weight across production batches.
Product Features and Industrial Applications of CPVC Cascade Ring Packings
CPVC cascade ring packings excel in balancing lightweight design with robust performance for chemical processes:
- Chemical Resistance: They withstand strong acids, alkalis, and organic solvents, making them ideal for harsh environments like acid absorption towers or solvent recovery systems.
- Temperature Adaptability: With a continuous operating temperature range of 80–95°C (176–203°F), they outperform many plastic packings, ensuring stability in heating/cooling processes.
- Efficiency and Pressure Drop: High void fraction and optimized flow paths reduce pressure drop by 15–20% versus traditional packings, while 85–90% theoretical plate efficiency meets strict separation requirements.
In applications, CPVC cascade rings are widely used in:
- Chemical Distillation: Purifying solvents (e.g., ethanol, methanol) in refineries and petrochemical plants.
- Environmental Protection: Treating industrial wastewater to remove pollutants (e.g., H2S, SO2) in scrubbers.
- Pharmaceutical Processing: Isolating APIs in distillation columns, where corrosion resistance ensures product purity.
Q1: What is the minimum weight of 1 cubic meter CPVC cascade ring packings?
A1: ~350 kg, achieved through optimized structural design and high-quality CPVC resin.
Q2: How does the stepped edge reduce the weight of CPVC cascade rings?
A2: The edge reduces material usage by ~10% while maintaining 90% of the packing's original传质效率 (mass transfer efficiency).
Q3: Why is the weight of 1 cubic meter CPVC packings slightly higher than PP?
A3: CPVC has a denser base material, but its chemical resistance and temperature tolerance make it more suitable for harsh chemical services.
