Candle filter (CF)
Reliable solutions for separation problems
The BHS candle filter (type CF) is a fully automatic, batch-operated filter with filter elements arranged vertically inside a pressure vessel. It is used as a deep bed or precoat filter for clarifying liquids with low solids content.
The suspension is fed into the pressure vessel and continuously pumped until the required cake thickness is reached. The filter cake is formed on the outside of each filter candle. The filtrate is discharged from the inside of the candles through immersion pipes. After filtration, the filter cake can be washed, reslurried or dried. Finally, the cake is lifted by a blast of compressed air and discharged.
- A complete BHS candle filter plant used for catalyst conditioning (FCC)
BHS also provides complete candle filter installations including fittings, instrumentation, piping, pumps, tanks, skids and control systems. The plants have a modular design for easy transport and assembly.
Process criteria:
| Mode of operation | batch |
|---|---|
| Operating pressure | up to 10 bar (g) |
| Operating temperature | up to 250 °C |
| Solids content (suspension) | up to 5% (weight) |
| Cake thickness | up to 30 mm |
| Particle size | 0.5 - 50 μm |
| Filtration capacity (suspension) | 0.1 - 10 m³/m² h |
| Filtration capacity - dry solid | - |
| Active filter area | 1 - 150 m² |
