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Icon - Filtertechnik von KÖBO ECO>PROCESS

Precoat filter

The precoat filter from KÖBO ECO>PROCESS GmbH for fine oil filtration

The precoat filter (ASF) is a filter dome equipped with filter cartridges, which is fed discontinuously with contaminated oils (or solutions) via filter pumps.

In the first step, a filter aid suspended in the oil (e.g. cellulose, diatomaceous earth, perlite, etc.) is floated onto the filter carriers (filter cartridges) and a filter cake layer is formed. The pores of this filter aid layer are much finer than those of the filter carriers and thus enable fine filtration. Once the precoat layer has formed, the process is automatically switched to filtration mode.

The contaminated liquid is now passed through the filter layer of the filter cartridges from the outside to the inside, filtering out the dirt particles it contains. When a predefined differential pressure is reached (or after a set time has elapsed), the filter elements are cleaned by an automatic backwash and are ready for a new filter cycle.

Structure
  • The precoat filter consists of a filter dome and a cartridge plate in which the filter cartridges are mounted vertically
  • The cartridge plate separates the lower dirt area of the filter from the upper clean area in the dome cover
  • The inlets of the contaminated medium and the precoat line for the oil/filter aid mixture flow into the lower dirt area
  • The outlet opening for the sludge drain is located at the lower end of the filter dome
  • The outlet line for returning the filtrate to the clean tank or to the precoat tank leads from the upper clean area of the dome cover
  • Precoating the filter cartridges with a filter aid (e.g. cellulose, diatomaceous earth, perlite or carbon products)
  • Feeding the liquid to be filtered into the lower section of the ASF
  • Filtration of the contaminated liquid through the filter layer
  • Filtrate emerges from the upper dome cover
  • If the predefined differential pressure or the preset max. filter time, the filtration process is interrupted and automatic backwashing is started
  • Washing off the dirt-laden filter aid with the liquid dominate to the wash-off tank
  • The sludge is processed by a secondary unit

The precoat filter system is ideal for ultra-fine cleaning of liquids, e.g. for:

  • Fine filtration of cooling lubricants (oil) for
  • Grinding, honing and cold rolling processes
  • Finishing, lapping, eroding
  • Presses and rollers
  • in beer production, aqueous solutions, water treatment, etc.
  • High filtration capacity with low space requirement
  • Highest achievable filtrate quality
  • Modular design and expansion of the overall system possible
  • Fully automatic operation
  • Filter fineness [µm]: approx. 10
  • Size [m² Filterfläche]: 10,0 - 67,0
  • Throughput [l/min]: 300 - 4,000
  • Higher system outputs are also possible by connecting several filters in series

Find out more about our services and references by calling +49 (0) 202 / 7 09 02 - 0

In urgent cases, you can also contact us via our KÖBO ECO>PROCESS service hotline: Tel. +49 (0) 202 / 7 09 02 - 199

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KÖBO ECO PROCESS GmbH
Am Raukamp 14
42111 Wuppertal

info@koebo-eco.com
www.koebo-eco.com

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