Process Engineering
Candle Filters
Description
The BHS Candle Filter is designed for thin-cake, batch filtration and supports additional processes such as cake washing, drying, reslurry, and automatic cake discharge. The cake can be discharged as dry, wet, or concentrated slurry. Available in filter areas ranging from 0.17 m² to over 200 m² per vessel, the Candle Filter is ideal for clarification and recovery applications, handling liquids with low solids content ranging from 5% to ppm levels.
BHS filter candles are engineered for high liquid flow and low-pressure drop. Cake discharge is achieved by distributing gas to gently expand the filter sock. The materials of construction include stainless steel, alloys, and plastics, with vessels optionally lined with EPDM, Halor, PTFE, or other materials. Additionally, filter aids can be used as a precoat and/or body feed, which is particularly beneficial for handling sticky products or challenging filtration tasks.
Animation
Technical Specifications
| Type | Candle length | Candle area | Number of candles | Active filter area (total) |
|---|---|---|---|---|
| CF 12 | 1.200 mm | 0,34 m² | 3 units | 1 m² |
| 7 units | 2,4 m² | |||
| 19 units | 6,5 m² | |||
| CF 18 | 1.800 mm | 0,51 m² | 19 units | 9,7 m² |
| 37 units | 18,9 m² | |||
| 61 units | 31,1 m² | |||
| CF 21 | 2.100 mm | 0,6 m² | 7 units | 4,1 m² |
| 61 units | 36,0 m² | |||
| 91 units | 53,7 m² | |||
| 127 units | 74,9 m² | |||
| CF 24 | 2.400 mm | 0,68 m² | 19 units | 12,9 m² |
| 37 units | 25,2 m² | |||
| 61 units | 41,5 m² | |||
| 91 units | 61,9 m² | |||
| 127 units | 86,4 m² |
All specifications apply to the standard version. Technical data for customized designs may differ from the specified data. All technical data may change due to development. Subject to modification without notice.
| Operating method | intermittent |
|---|---|
| Operating pressure | up to 6 bar (g) |
| Operating temperature | up to 80 °C |
| Solids content (suspension) | up to 10 % (wt.) |
| Cake thickness | up to 30 mm |
| Particle size | 0,5 µm and above |
| Filter performance – suspension | 0,1 to 10 m³/m² h |
| Filter performance – dry solids | – |
| Active filter surface (total) | 1 to 86,4 m² |
Pilot Test Filter
Pilot Filter CF12-003
- Active Filter Area: 1.0m²
- Dimensions (LxWxH): 4.5ft x 3.5ft x 8.5ft
- Maximum Operating Pressure: 10 barg (145 psi)
- Material of Construction: Stainless Steel
LKF Pilot Filter
- Active Filter Area: 0.17m²
- Dimensions (LxWxH): 5ft x 3ft x 5ft
- Maximum Operating Pressure: 6 barg (87 psi)>
- Material of Construction: Stainless Steel