Vertical pressure leaf filter

The pressure leaf filter has been a proven solid liquid filtration system for decades, used in a wide variety of markets and applications. Particularly in the edible oil industries, pressure leaf filters are most commonly used in crude oil, bleached oil, winterized oil and nickel catalyst filtration.

Benefits

  • Fully automated
  • No electrical parts
  • Robust and simple design
  • Large filter area for relatively small floor space
  • Proven and tested technology

Applications

  • Cold Pressed Crude
  • Miscella
  • Bleaching
  • Winterization
  • Hydrogenated
  • Post-Bleaching
  • Deodorizing
Johannes Filtration B.V.
  • +31 (0) 297 785 129
  • info@johannesfiltration.com

How a vertical pressure leaf filter works

In a vertical pressure leaf filter, the filtration process begins within minutes of the start of the filtration cycle. Solid particles form a filtering layer on the fine outer wire cloth of the filter leaves. This process, known as cake building, enables all solids that can be filtered to be extracted from the slurry. The clear filtrate flows through the verticallyplaced, double-faced filter leaves and into the horizontal-mounted outlet manifold.

As the leaves filter on both sides, a large filtration area can be obtained in a relatively small vessel. Each leaf consists of five layers of stainless steel wire cloth, with the outer layers of fine mesh acting as the filtration media, and the centre layer facilitating drainage of the filtrate. The remaining layers act as supports for the filter media.

A fully-baffled inlet ensures that the solids in the incoming feed are kept in suspension and cake formation on the filter leaves remains undisturbed.

The filtration cycle ends as soon as the maximum pressure and/or cake thickness is reached. The unfiltered oil remaining in the filter tank is transferred to an intermediate tank for recirculation of filtration process.

The disposal of the dry cake begins by blowing dry with compressed air, inert gas or steam before being discharged automatically by the pneumatic vibrator and butterfly valve cake door. The vibrator assembly, which acts as both cake discharge mechanism and leaf spacer is mounted from outside the filter vessel. The vibrator shaft passes through a rubber membrane and utilises an O-ring seal to ensure that all the vibration energy is utilised in the filter cake release.

With this construction, the vertical pressure leaf filter offers large filtration areas in a small floor space, concentrated cake discharge, totally enclosed operation and ease of automation.

Technical support & service

Troubleshooting & problem solving

Maintenance repair
& overhaul

Immediate parts replacement

Get in touch with Europe’s filtration specialist

We focus on providing filtration solutions.
Please contact us for more information or to receive a quote.

Johannes Filtration
Amsteldijk-Noord 33
1422 XX Uithoorn
The Netherlands

T : +31 (0) 297 785 129
E : info@johannesfiltration.com