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- Candle Filter
Stainless Steel Candle Filter Housing for Oil Filtration
- 0.5-800μm
- candle filter cartridge
- S.S 304, 316L, Carbon steel
- 1 Year
- 1-60m2
- 1-200°C
- Description
- Video
Overview
The stainless steel candle filter is a closed-type pressure filtration device equipped with multiple stainless steel candle filter elements. It is suitable for clarifying and filtering various oils while removing impurities.
Core Function: Removes suspended particles, colloids, impurities, and filter aids to enhance oil cleanliness and quality stability.
Key Advantages
Sealed Structure Prevents Oxidation
High-Temperature & Corrosion Resistance
High Filtration Precision
High Automation Level
Structure and working principle
Structure
Candle filter is mainly composed of cylinder, filter cartridge, filter cloth, filter aid, PLC control system and other accessories. Other auxiliary equipment includes air compressor, pump, etc. The material of cylinder and filter cartridge is mainly stainless steel (304/316/321), carbon steel, titanium, the material of the filter cloth is mainly PP (polypropylene), PE (polyester), PPS (polyphenylene sulfide), PTFE (polytetrafluoroethylene), nylon fiber, etc. The amount of filter agent added is different according to different processes. The recommended ratio is between 1% and 3%, mainly including activated carbon and diatomaceous earth.
Principle
The candle filter is closed and composed of multiple porous filter cartridges (candle filter cartridges), and the filter cartridge is covered with a matching filter cloth. When these solid substances reach a certain thickness, the so-called "filter cake layer" is formed. Because the gap between the particles in the filter cake layer is very small, the escape of particulate impurities in the liquid is blocked, so that the filtrate becomes clear and the filtration effect required for production is achieved, so the candle filter is also called the filter cake layer filter. When the filter cake layer exceeds a certain thickness after normal filtration for a period of time, the rate of filtrate passing through the filter cake layer decreases, and the filtration efficiency becomes poor, and the "filter cake layer" needs to be removed. At this time, the system will perform backflushing according to the signal provided by the pressure sensor. To remove the cake, open the valve at the bottom of the cylinder to discharge slag, and then rebuild a new "filter cake layer" to start a new round of filtration cycle.
Specification
| Model | Cartridge QTY | Cartridge Size(mm) | Filtering Area(m2) | Capacity(t/h) | Housing Volume(L) | Inlet | Cake Discharging Outlet | Total Height(mm) |
|---|---|---|---|---|---|---|---|---|
| DZZS-1 | 7 | 90*500 | 1 | 2.2 | 140 | DN25 | DN150 | 1902 |
| DZZS-1.5 | 10 | 90*500 | 1.5 | 3.3 | 180 | DN25 | DN200 | 1928 |
| DZZS-2 | 7 | 90*1000 | 2 | 4.4 | 220 | DN32 | DN150 | 2402 |
| DZZS-3 | 10 | 90*1000 | 3 | 6.6 | 280 | DN40 | DN200 | 2428 |
| DZZS-4 | 14 | 90*1000 | 4 | 8.8 | 400 | DN40 | DN200 | 2502 |
| DZZS-6 | 19 | 90*1000 | 6 | 13.2 | 560 | DN50 | DN250 | 2578 |
| DZZS-8 | 24 | 90*1000 | 8 | 18 | 740 | DN65 | DN250 | 2644 |
| DZZS-12 | 40 | 90*1000 | 12 | 26 | 1200 | DN65 | DN300 | 2854 |
| DZZS-18 | 64 | 90*1000 | 18 | 40 | 1800 | DN80 | DN400 | 2904 |
| DZZS-30 | 106 | 90*1000 | 30 | 66 | 3000 | DN100 | DN500 | 3440 |
| DZZS-40 | 140 | 90*1000 | 40 | 88 | 3815 | DN150 | DN500 | 3560 |
| DZZS-60 | 190 | 90*1000 | 60 | 132 | 5700 | DN150 | DN500 | 3700 |
Typical Application Scenarios
- Dewaxing, decolorization, and precision filtration of industrial oils.
- Filtration of biodiesel, hydraulic fluids, waste oils, blended oils, base oils, diesel fuel, kerosene, lubricants, and transformer oil.
- Dewaxing, decolorization, and filtration of vegetable oils and edible oils.
Selection Notes (Limitations)
- Equipment investment costs are relatively high. Compared to bag filters or plate filters, the pressure vessel structure and automated systems increase initial investment.
- Strict management of filter aids is required. In edible oil refining, the usage of bentonite or diatomaceous earth must be carefully controlled to avoid compromising filtration efficiency and increasing costs.
