Filtration

Variants of filtration:

• automatic filtration
• filtration with manual regeneration

Automatic filtration

Oil of filtering is prepared in the homogenising tank an filtered at an automatic sheet filter. The entire process of filtering is controlled automatically. A part of filtering is also the compressed air source (compressor, air chamber neede for filter operation. The filtered oil is pumped into oil containers.

List of machines and equipment:

• Separation
• Tank with mixer
• Pump
• Automatic sheet filter with accessories
• Transport of filtering pie into the press
• Hopper with crusher and flap
• Steel structures
• Eletrical installation

Filtration with manual regeneration

The pressed oil is prepared for filtering in the homogenising tank and it is then filtered on a desk filter. The principle of filtering consists in pushing the filtered oil through the filtering desks. These desks must be regenerated by hand. The caught impurities in the filter (filtering pie) can be transported into the cakes storage. The filtered oil is pumped into oil containers.

Advantages: low investment demands, simplicity, suitable for smaller capacities.

Desk filters

Desk filters is used as main filtration. Filtering cloths are made from fabric and must be manually regenerated.

List of machines and equipment:

• Tank with mixer
• Pump
• Desk filter
• Valves, pipelines
• Filtering cloths
• Eletrical installation

Sleeve filters

The sleeve filter is used for safety filtering and is located behind the main (desk) filtering.

The filtering speed depends on the viscosity (temperature).

Filtering selectivity – 1, 5, 10 µm.

Candle filters

The candle filter is used for fine filtering and is located behind the safety (sleeve) filtering. The filtering speed depends on the viscosity (temperature).

Candle filters serve for final cleaning of very fine pollutant particles.

Filtering selectivity – 1, 5, 10 µm.

Process diagram