FUNDABAC^® Candle Filter

Efficient solid-liquid separation with automatic cake discharge.

Self cleaning filter with unique cloverleaf shaped candle element design for efficient solid-liquid separation.

Efficient solid-liquid separation

The unique cloverleaf shaped candle element design of this tubular pressure filter is at the heart of the self cleaning filter system. This design allows for efficient solid-liquid separation resulting in a polishing grade filtrate while guaranteeing adherence of the filter cake to the cloth throughout the entire filtration cycle, as well as effective and automatic cake discharge. Once the clean filtrate has passed through the filter cloth, it flows into the perforated peripheral tubes and then down to the bottom of the candle, before rising in the central tube toward the registers.

Regardless whether the solids discharge is in slurry or a dry cake form, it is achieved by a rapid counter-current flow and pressure from the inside of the candle. The patented candle structure accentuates the effect of this counter-current flow. A quick-pulse air or nitrogen (gas) blowback results in a rapid flexing of the filter media away from the candle. This breaks the cake away from the filter media, causing it to fall from the candle to the bottom of the filter vessel.

It is perfectly suited for automatic operation via PLC or DCS. This ensures reliable product quality and reproducible batch filtration. It is designed to operate in the absence of any moving parts. As a result, maintenance requirements and costs are extremely low. The use of new synthetic materials, particularly filter internals, contributes to reliable operation and long life of the filters.

Advantages

Unique cloverleaf shaped candle element design
High solids capture efficiency
Sub-micron particle retention capability
Can be designed to work by using filter aid (precoat, body feed) according the needs
Uniform filter cakes dependably adhere to the filter cloths
Slurry or dry cake discharge
Patented heel volume filtration ensures minimal liquid loss
Can be designed to recovery valuable precious metals/catalysts
Effective cake washing can be implemented as an additional process step
Fully enclosed design and automatic operation means virtually no operator intervention of materials contact
Virtually no operating costs
Lab and pilot units readily available for testing under the supervision of trained field service representatives

Features

Specialized Filtrate Piping
Pressure Reducing Valve
Process Engineering and Control System Packages
Discharge Valve
Overfill Protection Device
Filter vessels available in CS, various types of stainless steel, Titanium, High Nickel Alloys and Fibre glass
Liners available in Hard rubber, PVDF, PFA, PP and Halar
Filter internals available in Stainless steel 316L, PP, PVDF and PPS
Filter media available in PP, PVDF, PTFE, PPS, PEEK, PE, UP and SS 316L

FUNDABAC® Candle Filter Internal Design

Filter Elements

Gallery

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Videos

Applications

Adipic Acid

Decolorization of mother liquor in adipic acid production.

Crude Oil Mercury Removal

Mercury removal from crude oil to prevent upsets in downstream processes, such as contamination of precious metal hydrogenation catalyst used in catalytic cracking.