Licensee Of
Maelstrom High
Shear Mixers - U.K
Top-Notch Technology In Production Of Oils And Fats
The top cover is provided with devit arm mechanism for raising the lid for cleaning/ removing the leaves. “I” bolts are provided for quick opening and closing of top lid. A mechanical jack is provided to lift the top for cleaning/removing the leaves. Lugs are provided for mounting the PLF.
The Filter leaves filter on both sides and hence a large filtration area is obtained in a relatively small vessel.
PRESSURE LEAF FILTER
The Pressure Leaf Filter is a MS/SS Vertical Vessel with Filter Leaves inside. The leaves are mounted vertically on a common manifold pipe, through which the filtered liquid flows out. On the top, the leaves are held by a vibrating shaft . A mechanical vibrator driven by electric motor/pneumatic vibrator is provided for vibrating the leaf shaft for cake discharge. Jacket for hot filtration can be offered if desired Over flow, vent/steam/air charging, pressure gauge & safety valve are provided on the top.The top cover is provided with devit arm mechanism for raising the lid for cleaning/ removing the leaves. “I” bolts are provided for quick opening and closing of top lid. A mechanical jack is provided to lift the top for cleaning/removing the leaves. Lugs are provided for mounting the PLF.
The Filter leaves filter on both sides and hence a large filtration area is obtained in a relatively small vessel.
The Pressure Leaf Filter is used in
- EDIBLE OIL INDUSTRY :- Bleached ,winterized , Deodorized , Hydrogenated Fractionzed oils, Dewaxing, Catalyst, Mineral oil, Sulphur.
- BEVERAGE INDUSTRY :- For Glucose, fruit Juices, cold drinks, sugar, vinegar.
- CHEMICAL INDUSTRY : - For Organic & Inorganic salts , dyes, chemicals, plastizers
- PHARMA INDUSTRY :- For Pharmaceutical intermediates, syrup, bulk drugs, antibiotics, intravenous solutions.
- PETROCHEMICAL INDUSTRY :- Crude oil, LPG, lubricating oil, sulphur.
- Interesterification
- Herbal Extraction Plants
- Micronutrient Recovery
- Essential Oil Distillation
- High Vacuum Separation by Molecular Distillation
- Lube Oil Rerefining
Working Of The Pressure Leaf Filter
Leaf Filters are ideal for Solid-Liquid Separation & work on principle of Precoating & pressure. Pre coating is done with the help of suitable filter aid about 0.5 to 1% ( Bleaching earth , supercel, Hyflo, super flo etc.) mixed with the liquid to be filtered. Unfiltered liquid is pumped into the filter vessel. Initially the filter aid starts forming a precoat layer on both sides of the filter leaves, until then cloudy material comes out of the Filter. Once the layer is formed , Pressure starts developing, restricting the impurities. Clear liquid flows from both sides into the leaves ( filter elements), flows along the tubular channel & gets discharged from Bottom of the leaf. All the leaves are mounted on a common manifold. The leaves start getting choked on both the sides by impurities forming cake, which is in wet form. Once the leaves get chocked completely, the pressure rises to 3-4 Kg/cm² & the output flow almost stops.
The Pump is stopped & steam /air pressure is applied from the top ( without dropping the filter pressure) to filter the material around the leaves held up in the tank & to squeeze the cake further & reduce the liquid retention in it . The hold up unfiltered liquid in the conical portion is taken back.
In PLF the cake can be dried by steam /hot air & then discharged from the bottom with the help of mechanical/pneumatic leaves vibrator. The whole operation of cake drying takes 30-45 min, & cake discharge takes 5-10 min.
For wet cake discharge water spray nozzles are provided.
MATERIAL OF CONSTRUCTION
Stainless Steel, Carbon Steel ,PP with Leaves in Stainless steel 304, 316, 316L and materials as required. ‘O’ Ring sealings are available in Viton,EPDM, Nitrile, Silicon etc.PLF LEAVES
Each Leaf is made of 5 Ply of SS wire mesh of different gauge wires.Two outer filtering mesh are Hollander weaves and three inner Mesh are only for support. The 5 ply wire mesh are held together by a tubular frame & made leak proof by machine riveting. The quality of filtration & life of filter depends mainly on the quality of outer wire mesh & riveting.
| MODEL NO | FILTER | NO OF | MAX CAKE | LEAF | TANK | LEAF | FILTER | CAKE |
| AREA | LEAVES | VOLUMN | PITCH | OD | HEIGHT | HEIGHT | OUTLET | |
| sq m | m³ | Mm | mm | mm | mm | DN | ||
| PLFV5/5 | 5 | 5 | 0.125 | 70 | 780 | 920 | 1930 | 350 |
| PLFV8/7 | 8 | 7 | 0.2 | 70 | 900 | 920 | 2050 | 350 |
| PLFV10/9 | 10 | 9 | 0.25 | 70 | 900 | 920 | 2050 | 350 |
| PLFV12.5/11 | 12.5 | 11 | 0.3 | 70 | 900 | 920 | 2050 | 350 |
| PLFV15/9 | 15 | 9 | 0.375 | 70 | 1100 | 1250 | 2540 | 500 |
| PLFV17.5/9 | 17.5 | 9 | 0.4375 | 70 | 1100 | 1250 | 2540 | 500 |
| PLFV20/11 | 20 | 11 | 0.5 | 70 | 1100 | 1250 | 2540 | 500 |
| PLFV23.5/11 | 23.5 | 11 | 0.5875 | 70 | 1225 | 1250 | 2730 | 500 |
| PLFV25/11 | 25 | 11 | 0.625 | 70 | 1225 | 1250 | 2730 | 500 |
| PLFV27/13 | 27 | 13 | 0.675 | 70 | 1225 | 1250 | 2730 | 500 |
| PLFV30/15 | 30 | 15 | 0.75 | 70 | 1225 | 1250 | 2730 | 500 |
| PLFV35/13 | 35 | 13 | 0.875 | 75 | 1380 | 1350 | 3000 | 600 |
| PLFV38/15 | 38 | 15 | 0.95 | 75 | 1380 | 1350 | 3000 | 600 |
| PLFV42/13 | 42 | 13 | 1.05 | 75 | 1500 | 1500 | 3300 | 600 |
| PLFV46/15 | 46 | 15 | 1.15 | 75 | 1500 | 1500 | 3300 | 600 |
| PLFV50/17 | 50 | 17 | 1.25 | 75 | 1500 | 1500 | 3300 | 600 |
| PLFV60/17 | 60 | 17 | 1.5 | 75 | 1500 | 1650 | 3450 | 600 |
| PLFV70/19 | 70 | 19 | 1.75 | 75 | 1650 | 1500 | 3500 | 600 |
| PLFV75/19 | 75 | 19 | 1.875 | 75 | 1650 | 1650 | 3650 | 600 |
| PLFV80/19 | 80 | 19 | 2.125 | 75 | 1750 | 1650 | 3650 | 700 |
| PLFV90/19 | 90 | 19 | 2.25 | 75 | 1850 | 1650 | 3750 | 800 |
