250y ceramic structured packing is a critical component in chemical distillation, specifically engineered to enhance efficiency in ethylbenzene production. As a specialized separation tool, its design—combining a 250 m²/m³ specific surface area, y-type wire gauze structure, and high-purity alumina ceramic material—enables superior mass transfer, low pressure drop, and stable operation, directly boosting ethylbenzene purity and production yield in industrial distillation processes.
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Structural Design and Material Advantages
The "250y" designation reflects its core performance parameters: 250 m²/m³ (250 is the specific surface area, m² per cubic meter) and "y" denotes the Y-shaped wire gauze, which optimizes fluid distribution and contact between vapor and liquid phases. Made from high-alumina ceramics (typically 90%+ Al₂O₃), it exhibits exceptional mechanical strength (compressive strength >50 MPa), chemical inertness (resistant to acids, alkalis, and organic solvents), and thermal stability (operating temperature up to 1000°C). These properties make it ideal for ethylbenzene distillation, where high temperatures (250-350°C) and corrosive benzene-based mixtures demand robust, long-lasting equipment.
Product Specifications and Practical Applications
250y ceramic structured packing features a balanced design: 250 m²/m³ specific surface area, 95%+ porosity, and a theoretical plate count of ~12-15 per meter, equivalent to 3-4 times the efficiency of traditional random packing. In ethylbenzene production, it is widely used in the C8 aromatic separation section, where it efficiently separates ethylbenzene from xylenes and other C8 components. For example, in large-scale ethylbenzene-styrene plants, replacing traditional metal or plastic packings with 250y ceramic packing increases throughput by 20-30%, reduces operating pressure drop by 15-20%, and lowers energy consumption by 10-12%, while ensuring product purity exceeds 99.9%.
FAQ:
Q1: What does "250y" signify in the structured packing's model?
A1: "250" refers to the specific surface area (250 m²/m³), and "y" denotes the Y-shaped wire gauze structure, optimizing vapor-liquid contact for high efficiency.
Q2: Can 250y ceramic packing handle the high temperatures in ethylbenzene distillation?
A2: Yes, its alumina composition ensures stability up to 1000°C, well-matching the 250-350°C process temperature range in ethylbenzene distillation.
Q3: How does 250y ceramic packing compare to metal alternatives in service life?
A3: Ceramic packing has a longer service life (10+ years vs. 5-8 years for metal), reducing maintenance frequency and total cost of ownership in harsh chemical environments.
