In the field of edible oil refining, the filtration step directly determines the quality, color, clarity, and storage stability of the final oil product. Designed specifically for demanding industrial environments, the Soybean Oil Perforated Composite Sintered Filter Cartridge, with its unique composite structure and excellent comprehensive performance, is gradually becoming the ideal filtration choice for soybean oil and other vegetable oil refining processes.
The Soybean Oil Perforated Composite Sintered Filter Cartridge is an integrated filter cartridge formed by combining a stainless steel perforated plate with multiple layers of stainless steel woven wire mesh through a special layered assembly, followed by sintering under vacuum using a high-temperature diffusion bonding process. This cartridge integrates a pressure-resistant skeleton (perforated plate) and a filtration functional layer (sintered mesh) into one unit, combining the high-strength support of the perforated plate with the high-precision filtration performance of the sintered mesh.
The product is manufactured using standard materials such as stainless steel 304 and 316L, offering a filtration accuracy ranging from1 microns to 200microns, with a filtration efficiency exceeding 99.99%. The maximum operating temperature can reach400°C, fully meeting the filtration requirements of various stages in soybean oil production, including pretreatment and refining.
The core process of this filter cartridge is "composite sintering". Specifically, a stainless steel plate is first punched to form a perforated plate with a specific aperture and open area ratio. This perforated plate is then combined with several layers of stainless steel woven wire mesh according to a designed layer structure. The combined materials are placed in a vacuum furnace, evacuated to a certain pressure, and subjected to a high-temperature diffusion process that achieves atomic-level bonding between the stainless steel perforated plate and the mesh layers. Subsequent processes such as gas pressurization and rolling result in an integrated filter material with excellent mechanical properties and a stable structure.
The standard five-layer structure typically consists of a protective layer, a precision control layer, a dispersion layer, and multiple support layers. The mesh openings of each layer are staggered with each other, forming a uniform and ideal filtration path, allowing the filter cartridge to achieve an optimal balance among filtration accuracy, flow capacity, and strength.
1. High Precision and High Uniformity
Using a unique graded mesh configuration, the filtration precision is uniform and stable. The mesh apertures do not change during use, effectively removing suspended impurities, colloids, and fine particles such as soap stocks produced during refining from soybean oil. With a wide precision range (1-200 μm), it can be flexibly selected according to the filtration requirements of different process stages.
2. Excellent Mechanical Strength
The standard five-layer mesh structure combined with a stainless steel perforated plate as a rigid support layer endows the filter cartridge with extremely high mechanical strength and pressure resistance. It can withstand long-term operation under acidic/alkaline environments and high temperatures exceeding 200°C. It performs particularly well in soybean oil filtration conditions involving high pressure, high viscosity, and high solids loading.
3. Excellent Cleanability and Backwashability
Due to its surface filtration structure, where impurities are mainly retained on the surface rather than embedded deep inside, the cartridge exhibits excellent reverse flow cleaning performance. Various cleaning methods such as reverse flow of water or filtrate, ultrasonic cleaning, dissolution, and baking can be used to regenerate the cartridge, allowing it to be reused many times and significantly reducing production costs.
4. Excellent High-Temperature and Corrosion Resistance
Cartridges made of 316L stainless steel can operate stably over a wide temperature range from -200°C to 650°C, with outstanding corrosion resistance, making them particularly suitable for high-temperature processes such as oil degumming and decolorization. Without gaskets, the maximum operating temperature can reach 816°C.
5. Long Service Life and High Overall Economic Benefit
The cartridge is entirely made of stainless steel, with no risk of filter media shedding and not easily damaged, giving it a much longer service life than traditional filter media. Although the initial investment is slightly higher than that of conventional media, the overall operating cost is lower over long-term use due to convenient cleaning/regeneration and low replacement frequency.
In large-scale oil processing facilities, the perforated composite sintered filter cartridge can be used in multi-stage filtration systems:
Pretreatment Stage: Coarser filter cartridges are used to preliminarily remove large particles, debris, etc., from crude oil, providing relatively clean oil for subsequent refining.
Refining Stage: High-precision filter cartridges further remove fine colloids, soap stocks, and other impurities, effectively improving the clarity and transparency of soybean oil to meet edible oil quality standards. According to case study data, one soybean oil producer reduced clay consumption by 18% and increased refined oil light transmittance to 98.6% after adopting multilayer sintered metal filter elements, achieving significant results.
Circulating Filtration: When used with an automatic self-cleaning filter system, the perforated composite sintered filter cartridge can serve as the intermediate filtration element, enabling continuous, automated filtration operations and greatly improving production efficiency and automation levels.
Additionally, this filter cartridge can be used to remove harmful substances such as benzo(a)pyrene from edible oil, playing an important role in ensuring the safety of edible oil.
| Parameter | Typical Value |
|---|---|
| Material | SS304, SS316L, 2205, 904L |
| Filtration Accuracy | 1μm - 200μm |
| Filtration Efficiency | > 99.99% |
| Operating Temperature | ≤500° |
| Outer Diameter | 25mm - 500mm (customizable) |
| Length | 40mm - 1016mm (customizable) |
| Connection Types | DOE, 220, 222, 226, thread, flange, tie rod, etc. |
The perforated composite sintered filter cartridge has a wide range of applications. In addition to soybean oil refining, it can also be used for:
Precision filtration of various vegetable oils (rapeseed oil, peanut oil, corn oil, olive oil, etc.)
Oil filtration in hydraulic systems
High-temperature liquid filtration in the chemical and chemical fiber industries
Filtration, washing, and drying of materials in the pharmaceutical industry
Clarification filtration in the food and beverage industry
Water treatment and high-temperature gas filtration
