Candle Filter for Clarification & Recovery of Liquid with Low Solid Content

Description of metal mesh candle filter

Candle filter is composed of a filter housing, filter bags, filter elements, registers, a computer control system, accessories, etc.

The filter housing is provided with instrument connection nozzle, air vent, inlet nozzle, discharge nozzle, inspection hole, etc.

Candle filter consists of multiple combined filter elements inside. Every filter element is composed of 6 porous metal tubes and a central tube and then covered with a filter bag. The filter bag is selected according to the characteristics of the raw material liquid. Filter aids are required when filtering some special raw material liquids, such as activated carbon, diatomaceous earth, etc. Filter elements are used to support filter bags, and all filter elements are connected to the register at the top of the filter.

Specification of metal mesh candle filter

• Filter rating: 0.22–100 μm (depends on filter elements and functional design)
• Standard design pressure rating: 0.6 MPa, 1.0 MPa, 1.6 MPa, 2.0 MPa, higher pressures are available upon request.
• Filter bag material: PP, PET, nylon, PPS, PVDF
• Filter element material: SS316L, PP, PVDF
• Flow rate range:10–300 m3/h
• Filter area: 0.9–60 m2, other sizes are available upon request.
• Housing diameter: 250–2500 mm
• Back flushing differential pressure: 0.2–0.3 MPa
• Inlet & outlet size: 2" – 24"
• Housing material: SS304, SS316L, carbon steel or customized.
• Inner corrosion protection: PTFE, PVDF (suitable for strong acids and bases and other corrosion resistance requirements)
• Cake discharge nozzle: Soft seal or hard seal butterfly valve
• Optional automation instrumentation: Differential pressure/pressure transmitter, filter cake thickness detector, liquid level switch, flow transmitter, etc.

Application of metal mesh candle filter

Candle filters are mainly used to purify liquids with low solid content and recover expensive materials from them. They are widely used in the following industries.

• Pharmaceuticals. Biological and plasma products filtration, compressed air and gas filtration, catalyst recovery filtration;
• Food & beverage. Fermented beer filtration; edible oil bleaching & filtration, edible oil dewaxing or antifreeze oil filtration and catalyst recovery filtration, decolorizer and activated carbon filtration;
• Oil & gas. Crude oil mercury removal & filtration, gas desulfurization, sulfur recovery, etc.
• Environmental protection. Power station flue gas desulfurization, incineration waste gas disposal, waster toxic chemical precipitation & filtration, etc.
• Mining. Catalyst recovery & filtration, aluminum recovery washing water filtration, filtration in lithium and nickel production.