Filson
Candle Filter

Your Reliable Candle Filter Supplier in China

Filson is a professional candle filter manufacturer in China with over 18 years of candle filter manufacturing experience. We can provide many candle filters such as candle filter housing, brewery candle filters, medical use candle filters, candle filter elements at your request.

As a type of advanced, safe, efficient and pollution-free filtration mode, Filson candle filter is widely used for solid liquid separation and filtration in petroleum industry, ceramics industry, pharma industry, chemical industry, brewery industry and so on.

Filson candle filter is a compact industrial filter, which is mainly used for clarification filtration of low content of liquid and solid. And Filson candle filter is specially designed for the need in the production process requiring a harsh working environment.

Filson Candle Filter

Candle Filter Housing
There are many materials to make Filson candle filter housing such as 304/316L stainless steel, carbon steel, titanium, Hastelloy and so on. Filson candle filter housing, as a pressure vessel, is designed for harsh environments.
Brewery Candle Filter
Filson brewery candle filter, featuring with perfect tightness and steady performance, is an ideal updating filtration system in the beer, beverage industry. This machine adopts diatomite to be filter aid.
Candle Filter For Pharma
Filson candle filter for pharma is a sophisticated, highly automated and fulled enclosed system in pharmaceutical industry which has proven to be one of the most versatile and flexible solution.
Candle Filter Element
Filson candle filter element is available in various materials and sizes based on your application. And our candle filter element has large filtration surface area and high pressure differential resistance.

Why Choose Filson Candle Filter

It is hard to find a dependable candle filter supplier, then you are in right place, Filson is your best choice. Filson candle filter has been exported to over 40 regions and countries. And we have gained perfect reputation from our customers for our high quality candle filter.

To ensure quality of candle filter, Filson controls every detail of the manufacturing process. Filson candle filter comply with ISO quality certification, and all candle filters are tested for 100% integrity before delivery.

Filson is a customer-oriented company which is dedicated to offer outstanding candle filter for our OEM clients. We can customize your candle filter according to your application. Send us your drawing and specifications, we are always here to provide you with excellent products and responsible service.

Candle Filter Function

  • Remove solid particles as small as 0.2 micron
  • Clarify the media of low content solid and liquid
  • Used for thickening by partial removal of liquid phase
  • Produce uniform filter cake and create polishing filtrate
  • Achieve high yield the discharge of dried filter cake
  • Serve a wide variety of industrial applications
  • Decrease downtime, ensure operators safety
  • Avoid unnecessary abrasion and reduce installation space
Filson Candle Filter Function
Filson Candle Filter Application

Candle Filter Application

  • Separation of precious metal catalysts such as Nickel, Platinum, Palladium etc.
  • Separation of activated or charcoal carbon at API plants
  • Colour removal in veg oil
  • Resin filtration, fuel and oil additive filtration
  • All types of polishing applications
  • Filtration of hazardous liquids and many more
  • Pharmaceutical industry, fine chemical industry
  • Solid content: up to 2%

Candle Filter Specification

  • Vessel and element construction material: 304/316L stainless steel, duplex SS, carbon steel, titanium, Hastelloy and so on
  • Filter cloth: PP, PE, PPS, PTFE, nylon fiber, etc
  • Number of candles: generally from 3-112
  • Diameter: 100-700mm
  • Candle length: 1200-2100mm
  • Handling capacity: 1000-2000 LPH
  • Filter area: from 0.17m2 to 200 m2
  • Filtration accuracy: down to 0.2 micron
  • Operating temperature: up to 140℃
  • Working pressure: up to 10 bar
  • End connection: screwed or flange
  • Threaded connection size: DN 80, DN 50, DN 40
Candle Filter Specification
Filson Candle Filter Feature

Candle Filter Feature

  • High solid particles capture efficiency up to 99%
  • Sub-micron particle retention capability for fine filtration
  • Washable filter cake to obtain maximum economic benefit
  • Unique shaped cloverleaf candle element design
  • Uniform filter cakes dependably adhere to the filter cloth
  • Can be discharged (cake) in a slurry or dry cake form
  • No moving parts, a few seals are not subject to wear
  • Less maintenance requirements and costs
  • Closed system for less intervention(operators) and pollution
  • Use at high temperature and high corrosion load
  • Fully automatic operation and self-cleaning system
  • In accordance with ASME code or other industrial standard

Filson: Your Premier Candle Filter Choice for Your Application

Filson candle filter has captivated users for its exceptional design and operation simplicity around the world. The candle filter element with unique design is the core component of Filson candle type filter.

Candle filtration process for liquid-solid separation

Filson candle filter is a closed system which is mainly composed of a pressure vessel and vertical mounted spiral/cylindrical candle filter elements, simply candle. Compared with the open system, Filson candle filter can significantly reduce pollution and improve the dryness of the filter cake.

To meet stringent requirements, Filson candle filter is an alternative approach for filtering fine particles. Filson candle filters, compact industrial equipment, are specially designed to remove solid particles as small as 0.2micron. As a result, polishing grade filtrate is produced.

First, Filson candle filter is equipped with various candle filter elements(some special filter aid like activated carbon, diatomite), in which a uniform filter cake is formed. Because the gap between particles in the filter cake layer is very small, the escape of impurities in the liquid is blocked. The filtrate becomes clear to achieve the filtration effect.

Filson candle filter is perfectly ideal for automatic operation through PLC or DCS control system, which can effectively avoid shutdown and ensure operation safety of personnel. At this point, this assure safety of production, reproducible batch filtration and reliable product quality.

Industrial Candle Type Catalyst Filter

Filson candle filter are usually seen in dispose of titanium dioxide, high temperature flue gas, brine clarification, red mud, china clay, fine chemicals and other applications requiring high efficient separation of filter cake or high degree of polishing.

Filson candle filter element is cylindrical in shape. And it can be installed in a single tube or arranged in a group inside of a candle vessel. In either case the individual candle filter elements are connected to headers in a series or parallel arrangement.

Filson candle filter housings are made of high quality 304/316L stainless steel or carbon steel, with powder coating. And candles can be made out of a wide variety of materials including cloth, ceramic and metal, depending on the medium being filtered.

The few seals that are needed are static and not subject to wear. This greatly improves the operational reliability (no leakage). And the use of new synthetic materials, particularly filter internals, contributes to reliable operation and long life of the filters.

The replaceable filter media can be virtually and process compliant woven or sintered material. At the same time, Filson candle filter element guarantees adherence of the filter cake to the cloth throughout the entire filtration cycle, as well as effective and automatic cake discharge.

Filson candle filter element consists of a cylindrical perforated support structure. The filter media fits over the perforated support structure like a sock and is clamped in place. This rigid design allows for high pressure filtration.

Filson candle filters can be created into various size at your request. And the larger type may have an area of 200m2 and contain 250 or more candle filter elements installed in a 2.5-3 meter vessels. The operation pressure range is quite wide but most of Filson candle filter operate at a pressure of 6-10 bar.

Filson candle filters are characterized with no moving parts, high differential pressure resistance, and less maintenance requirements and costs. Besides, Filson candle filter has larger filtration surface area and longer service life (compared to the use of a jacket sieve).

Another feature of Filson candle filters is the cylindrical shape of candle filter elements that retain the formed cake. This shape, opposed to plate, leaf or filterpress, increase the filtration area as cakes grow thicker and compensate for the reduced in filtration rates to some extent.

Stainless steel 5micron candle filter cartridge

With its unique advantages, Filson candle filter serves a wide variety of applications such as separation of precious metal catalysts like Nickel, Platinum, separation of activated or charcoal carbon at API plants, all types of polishing applications, filtration of hazardous liquid and more.

Filson candle type filters can not only be used as a filter but also as a thickener to produce a concentrated flowable slurry. In this case, there is no need for a separate machine to thick the cake. Consequently, deploying our candle filter helps to reduce space needs for our customers.

Filson candle filter allows the cake to be discharged in a semi-liquid form(sludge) or in a dry form. And it is achieved by a rapid counter-current flow and pressure from the inside of the candle. The panted structure of Filson candle filter enhances the effect of this flow.

Filson candle filter is a self-cleaning system, a quick-pulse air or nitrogen (gas) blowback or a suitable liquid results in a rapid flexing of the the filter media away from the candle. This breaks the cake away from the filter media, causing it to fall to the bottom of the filter vessel.

Filson candle filter comply with ASME code or other industry standards and incorporates important functional enhancements designed by Filson professional engineers, each with extensive experience in candle filter design. So you can totally rely on our candle filters.

If you are interested in Filson candle filter or if there is any doubt about the size, material, function and other specifications, do not hesitate to contact us today. Filson specialized representatives will response as soon as possible.

More details to be known in the following ways:

Call: 86 – 157 3695 8886

Email: [email protected]

Filson is looking forward to being your candle filter partner in the future!

Candle Filter FAQ:

What is a candle filter?

Candle filter is named for their candle-like shape. Candle filter is a compact industrial equipment, which is mainly used for clarification filtration of low content of solid particles, down to 0.1%. As a result, polishing grade filtrate is produced.

What is a candle filter

Candle filter is very suitable for filtering flammable, toxic and corrosive medium. For example: separation of precious metal catalysts, separation of activated or charcoal carbon at API plants.    And it is mainly applying in petroleum, pharmaceutical, brewery, fine chemical industry, etc.

Candle filter is an enclosed system which is mainly comprised of a candle filter vessel, filter elements (filter cloth, filter aid) and other accessories. Through PLC or DCS computer control system, candle filter is a fully automatic system .

What is candle filters in microbiology?

Candle filters are simple device made out of a clay and used to filter drinking water in order to remove turbidity, suspended materials and pathogens. Removal takes place by physical process such as mechanical trapping and adsorption on the ceramic candles, which have micro-scale pores.

What is candle filters in microbiology

How does candle filter work?

Candle filter is equipped with one or more candle filter elements in the vessel, each candle filter element consists of a cylindrical perforated support structure. The filter media(like activated carbon, diatomite) fits over the perforated support structure like a sock and is clamped in place.

The slurry enters at the bottom of the filter vessel. The upward flow helps to keep the solids in suspension so that they are evenly deposited on the surface of the filter element.

How does candle filter work

When the liquid passes through filter media, the solid substances in the liquid will gradually gather on the surface of filter media. Until the solid material reaches a certain thickness, a layer has formed on the surface of candle filter element. This layer is so-called “filter cake layer”.

Because the gap between the particles in the filter cake layer is very small, the escape of the particles in the particle impurities in the liquid is blocked, so that the filtrate become clear to achieve the filtration effect.

  • Filling: the slurry is passed through pump from the bottom into the filter vessel. The upward flow helps keep the solids in suspension thereby depositing it evenly on the surface of the candle filter cartridges
  • Pre-coating: the suspension is circulated through candle filter elements to produce a porous precoat layer
  • Filtration: the filter cake is formed on the outside of the filter candle while the transparent filtrate is discharged from the inside of the candles through the header. The candle can form a cake raging from 5 to 25mm thick.
  • Cake washing: the wash liquid follows the same route as in the filtration process. Cakes can be washed or rearranged in one or more stages.
  • Cake drying: cake can be heated and dried in the vessel by using hot gases, such as steam, air or nitrogen.
  • Cake discharge: discharging of the dry cake is by gentle gas expansion of the filter element, where gas is purged backwards through the filter, which pushes the dry cake off the filter surface.
How effective is candle filter?

There are many factors affecting the candle filter such as: nature of the solution to be filtered, solid liquid ration, number of candle filter elements and so on. After certain time normal filtering, the cake thickness is increasing to high level, the filter speed is slow down and the filtering efficiency is decreased.

Filson candle filter is optimized to achieve the greatest filtration efficiency owing to high performance candle filter elements. The biggest efficiency of candle filter is up to 99.9%. It can fully meet your industrial purpose.

Why is it called a candle filter?

Candles are named based on their shape. These filter elements are usually hollow tubes with a cap on the bottom and a threaded connector on top that attaches to a header. The outer face of the tube is usually made of punch plate, expanded metal, sintered metal, or porous ceramic to provide support for the filter media.

Why is it called a candle filter

What is filter candle made of?

Candle type filters can be made out of a wide variety of materials such as metal, cloth, ceramic, depending on the material used and the medium being filtered. We can customize your candle filter based on your applications.

Candle vessel are mainly made of high quality 304/316L stainless steel or carbon steel. And candle filter elements are typically made of multiple layer stainless steel sintered mesh or stainless steel wire mesh, copper or brass. Special alloys: Incoloy, Monel, Hastelloy, etc.

While ceramic candle filter are made of ceramic or porcelain, it is a cheap, simple, and easy to use and clean device. The ceramic candles contain micro-scale pores that absorb turbidity, suspended substances and pathogens.

How do you clean a candle filter?

Candle filter is a self-cleaning system. The first step is the removal of filter cake. The wash liquid follows the same route as in the filtration process. Cakes can be washed or rearranged in one or more stages. Then cake can be heated and dried in the vessel by using hot gases, such as steam, air or nitrogen.

How do you clean a candle filter

Discharging of the dry cake is by gentle gas expansion of the filter element, where gas is purged backwards through the filter, which pushes the dry cake off the filter surface. After the process, next filtration cycle begins.

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