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Help Center0.5-100um Pore Size SS316 Porous Sintered Filter Tube for Aeration Bubble Diffusion Sparger
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1. Manufacturing Technique
Stainless steel sintered porous material is stainless steel 304, 304L, 316, 316L powder as the raw material, after screening, molding, sintering microporous material.
Feature: Stainless steel sintered porous material has excellent corrosion resistance, oxidation resistance, wear resistance and mechanical properties.
2. Specification of stainless steel sintered porous materials
| Material | Filter Rating | Porosity | Penetrability | Working pressure | Operating temperature | Shape | specific surface area |
| 304,304L,316, 316L Stainless steel powder | 0.5um-70um | 30-45% | 3-1300M³/M²hKPa | 3.0MPa | 600℃ | Round Disc, Sheet,Tube,Round Bar,cap. | 10-40cm²/cm³ |
| Production | (Diameter)Length | (Diameter)Width | Thickness | Customized |
| Sintered porous round discs | φ5-φ300mm | φ5-φ300mm | 0.5-10mm | Yes |
| Sintered porous sheets | 5-300mm | 5-300mm | 0.5-10mm | Yes |
| Sintered porous tubes | 100-1200mm | φ20-φ200mm | 1-10mm | Yes |
| Sintered porous cartridge | 100-1200mm | φ20-φ200mm | 1-10mm | Yes |
3.Properties of stainless steel sintered porous materials:
High-temperature resistance, in normal use under 500 ℃.
High mechanical strength, good plasticity, can be machined.
Corrosion resistance, oxidation resistance, can be used in nitric acid, sulfuric acid, dilute hydrochloric acid (5%), acetic acid, liquid hydrogen, liquid nitrogen environment.
Good molding process, according to customer drawings for processing a molding.
High filtration precision and good purification effect.
The pores are uniform, the internal structure is stable, and no particles fall off.
Good air permeability, easy to back blow cleaning, can be used repeatedly online regeneration.
Wear resistance and impact resistance, good mechanical properties.
4. Application of stainless steel sintered porous materials
According to its physical and structural characteristics, stainless steel sintered porous materials are mostly used in the fields of noise elimination, filtration and separation, fluid distribution, flow limiting, capillary core and so on.
Chemical raw material production process in addition to impurity filtration, material decarburization filtration and fine filtration.
Ultrafiltration, RO, EDI system security filtration in water treatment.
Food and beverage industry finished product clarification filtration.
Filtration and recovery of precious metal catalyst in petrochemical industry.
Precision filtration of liquid raw materials, products and pharmaceutical intermediates in the chemical industry.
Reverse osmosis security filtration in the field of water injection filtration.
Gas purification of steam, compressed air deoiling purification.
Medium purification and flow limitation for pneumatic components, lubricants, fuels and hydraulic pressure systems.
Chemical dye industry of high - temperature decarburization.
5. Stainless steel sintered porous materials are allowed to use in the environment
Nitric acid, sulfuric acid, acetic acid, oxalic acid, phosphoric acid, 5% hydrochloric acid, molten sodium, liquid hydrogen, liquid nitrogen, hydrogen sulfide, acetylene, hydrogen, carbon dioxide gas, water vapor etc.
6. Precautions for the use of stainless steel sintered porous materials:
During installation, disassembly and clean avoid scratches, collisions and falls on hard objects.
When using, the filtrate is filtered from the outside in to avoid the reverse direction.
Avoid instant pressurization when the filter element works.
When the filtration efficiency is less than 50%, the filter element should be cleaned in time.
When cleaning the filter element, first backblow with pure gas, backblow pressure is 1.5 times of the working pressure, each time for 3-5 seconds, and 4-6 times, then backwash with clean liquid for 3-5 minutes, repeat 2-3 times.
If the filter element is not good after online backblowing and backwashing, it should be removed and cleaned in time.
7. Method for cleaning stainless steel sintered porous materials
The decarbonization filter elements in the pharmaceutical and chemical industries are mainly back blown and backwashed, and the ultrasonic cleaning is the best.
The filter elements of water industry are mainly rinsed with 5% concentration of nitric acid.
According to the chemical properties of the filtered impurities, the filter elements of the original liquid shall be respectively soaked in pickling (5% nitric acid) or alkaline washing (3-5% sodium hydroxide) and then washed with ultrasonic cleaning.
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