Vertical leaf filters are primarily suitable for precision filtration of high-temperature, corrosive liquids, especially in applications requiring explosion-proof containment and residue recovery. Typical applications include:
- Molten sulfur
- Hot oils/fats
- Aluminum sulfate
- Bleaching solutions
- Lubricant additives
- Catalyst recovery
- Dye intermediate recovery
Structure of Vertical Leaf Filter
1. Pressure Vessel System
- Vertical Tank: Cylindrical vessel (design pressure ≤0MPa), top quick-opening cover (hydraulic-driven)
- Elliptical Head: Bottom conical structure with rubber/PTFE anti-corrosion lining
2. Filtration Unit
- Vertical Leaf Assembly: Multi-layer stainless steel frame (single leaf filtration area: 1-5 m²)
- Filter Leaf Structure: Support mesh + Fine filter mesh + Protective mesh
- Liquid Collection Manifold: Core fluid transfer component
3. Residue Discharge System
- Vibration Motor: Core driver for residue discharge
- Gas Backflush Valve: Compressed air (0.5MPa) reverse pulse cleaning to reduce cake moisture
- Pneumatic Bottom Valve: Large-diameter discharge valve
4. Auxiliary Systems
- CIP Spray Ball: Top-mounted rotary spray head for hot alkali solution cleaning
- Differential Pressure Sensor: Real-time monitoring of filter clogging
Vertical pressure leaf filter working principle
Operates based on pressure-driven cake-layer filtration in three stages:
1. Filtration Stage
- Pressurized Feeding: Suspension pumped (0.3-0.6MPa) into sealed tank, permeating vertical filter leaves (pore size: 1-100μm).
- Cake Formation: Solids accumulate on leaf surfaces forming a rigid filter cake (primary filtration medium).
- Filtrate Collection: Clarified liquid discharged via central manifold.
2. Discharge Stage
- Cake Drying: Compressed air/inert gas (0.5MPa) blowing reduces moisture to <20%.
- Automatic Discharge: Bottom valve opens; cake detaches via gravity/vibration (15-30Hz).
3. Regeneration Stage (Optional)
- Backflushing: Reverse cleaning fluid injection to restore flux.
- CIP Cleaning: Hot alkali circulation for sterilization (sanitary-grade applications e.g., edible oils).
About the Author : Komine
Komine is a seasoned expert in the filtration industry with years of experience in providing innovative solutions for industrial and commercial filtration needs. As a key member of Yuwei Filter, he has contributed significantly to advancing filtration technologies and ensuring top-notch product quality. His expertise and dedication have made him a trusted authority in the field.
