250y ceramic structured packing is a specialized ceramic separation device engineered specifically for acid concentration units. Its structured design and material properties make it ideal for efficiently separating acid solutions, addressing the high demands of corrosion resistance and mass transfer efficiency in chemical processing environments.
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Structural Design and Performance Advantages
The "250y" designation reflects its specific geometric parameters, including a bulk density of approximately 250 kg/m³ and a wave-patterned structure. Its high specific surface area (typically 250 m²/m³) and controlled void fraction (around 80%) enable optimal gas-liquid contact. Crafted from high-purity alumina ceramics (90%+ Al₂O₃), it exhibits exceptional resistance to strong acids like sulfuric, nitric, and phosphoric acid, as well as high-temperature stability. The structured wave geometry ensures uniform fluid distribution, reducing channeling and enhancing separation efficiency by 15-20% compared to traditional random packings.
Manufacturing involves precision extrusion and high-temperature sintering (1,600°C), resulting in uniform porosity and mechanical strength (compressive strength > 40 MPa), preventing breakage under pressure or thermal cycling. Standard module sizes (1m×1m×0.5m height) simplify installation in existing acid concentration towers, minimizing downtime during upgrades. Customizable dimensions and surface treatments (e.g., anti-sticking coatings) further adapt it to specific process requirements.
In acid concentration units, 250y ceramic structured packing is widely applied in multi-effect evaporators, falling film evaporators, and packed columns. It efficiently concentrates dilute acid streams (e.g., 20-30% H₂SO₄) to high concentrations (up to 98% H₂SO₄) by maximizing heat and mass transfer. For example, in fertilizer production, it recovers concentrated phosphoric acid, reducing raw material consumption by 10-15% while lowering environmental emissions of acid waste. In the pharmaceutical industry, it enables safe concentration of nitric acid for synthesis reactions, ensuring product purity and process safety.
FAQ:
Q1: What types of acids is 250y ceramic structured packing compatible with?
A1: It is highly resistant to all strong inorganic acids (e.g., sulfuric, nitric, hydrochloric, phosphoric acid) and most organic acids (e.g., acetic, oxalic acid) at temperatures up to 150°C.
Q2: What is the typical specific surface area and void fraction of 250y packing?
A2: The specific surface area is 250 m²/m³, and the void fraction is approximately 80%, balancing efficiency and pressure drop.
Q3: Can 250y ceramic packing be used in existing acid concentration towers without major modifications?
A3: Yes, its standardized 1m×1m module size allows easy replacement of random packing sections, typically requiring minimal structural adjustments to the tower internals.
