Stainless steel powder sintered filter materials (including tubular and plate) is 316L powder as raw material, after sieving, molding, sintering from the micro filter element. We can produce porous elements with different shapes, structures, sizes and porosity, such as: cover, cap, sheet, tube, rod filter element. The sintered stainless steel filter material is a new filter material with wide development prospect.
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sales@world-filters.comStainless steel powder sintered filter material (including tube and plate) is made of 316L powder as raw material, after screening, molding and sintering. High filtering precision, good permeability, high mechanical strength, high material utilization, suitable for higher working temperature and heat shock. Widely used in pharmaceutical industry, water treatment industry, food industry, biological engineering, chemical industry, petrochemical industry, metallurgical industry and gas purification. Therefore, the stainless steel powder sintered filter material is a new type of filter material with wide development prospect because of its high-tech material composition and special molding process, which makes it have unique excellent performance.
High temperature resistance, under 500 degrees Celsius normal use.
High filtering precision, stable pore, can effectively remove suspended matter and particles, etc., excellent filtering precision and good purification effect.
Good permeability, low pressure loss. High porosity, uniform pore diameter, small initial resistance, easy back blowing, online regeneration, easy cleaning, strong regeneration ability, long service life.
The utility model has the advantages of high mechanical strength, good rigidity, good plasticity, no need of additional framework support and protection, simple installation and use, convenient maintenance, good assembly property, and can be welded, bonded and machining.
The pore is uniform, especially suitable for fluid distribution, homogenization treatment and other uniform requirements of the occasion.
Filtering precision: 1 ~ 65 μ m.
No particles fall off, and no secondary pollution is formed.
Good mechanical properties, low pressure, large flow, can be pressed or pumped filter, simple operation.
Good corrosion resistance, can be used in nitric acid, sulfuric acid, acetic acid, oxalic acid, phosphorous acid, 5% hydrochloric acid, molten sodium, liquid hydrogen, nitrogen, hydrogen sulfide, acetylene, water vapor, hydrogen, carbon dioxide gas and other environment.
Good molding process, the overall non-welding length up to 1200 mm. The stainless steel powder product is formed at one time, without cutting, the effective utilization rate of raw materials is high, the maximum degree of material saving, especially suitable for large quantities and complex structure components.
1. Stainless steel powder sintered filter core is consumable, although it is more durable than other filter elements, but in the process of cleaning and disassembly and assembly, attention should be paid not to scratch, smashing, falling and other phenomena to prevent man-made damage. It is strictly forbidden to use tools to exert force on the surface of the filter core.
2. Generally speaking, the filtrate is filtered from the outside to the inside of the filter core, and reverse filtration is not advocated.
3. When filtering, slowly pressure to the required working pressure, it is strictly forbidden to open the valve quickly supercharging.
4. The maximum working pressure is ≤ 3MPa. When the filtration efficiency is less than 50%, the clean air or clean liquid should be used for on-line backblowing and backwashing in time.
5. Stainless steel powder sintered filter core is generally blown back with pure gas, the back blowing pressure is 1.2-1.5 times of the working pressure, the backblowing time is 3-5 seconds, and the clean liquid is used for backwashing for 3-5 minutes and 2-3 times after repeated operation for 4-6 times.
6. If the filter core is still seriously damaged after on-line backblowing and backwashing, it should be removed in time for cleaning.
Stainless steel powder sintered filter core can be regenerated and cleaned by physical method and chemical method according to the pollution and the chemical properties of pollutants and the physical properties of stainless steel.
The main physical methods are as follows: clean liquid recoil, clean gas backblowing and ultrasonic cleaning. The main chemical methods are dilute acid, dilute alkali, oxidant, surfactants, enzymes and other cleaning agents. The above methods can also be used alternately.
According to several common applications, the cleaning methods are as follows:
1. The decarbonization and filtration in pharmaceutical and chemical fields should often be carried out by backblowing and backwashing combined with ultrasonic cleaning.
2. In the water industry, because the filter core surface intercepts for insoluble salt and oxide, generally uses 5% nitric acid immersion, does not need ultrasonic cleaning, can achieve the cleaning effect.
3. The original liquid filtration should be combined with the chemical properties of pollutants, and the following methods should be used for cleaning:
The main results are as follows: (1) Alkali washing: soaking in pure solution with 3-5% sodium hydroxide for 30-60 minutes and temperature about 40 degrees is the best in ultrasonic cleaning machine. After soaking, filter deionized water or injection water was washed inside and outside to neutral, and the conductivity was measured. Blow dry with pure air ≥ 0.4MPa pressure.
(2) pickling: soak in 5% nitric acid solution for more than 8 hours at a temperature of about 40 degrees. It is the best in ultrasonic cleaning machine. After soaking, rinse inside and outside with filtered deionized water or injection water to neutral, side conductivity. Blow dry with pure air ≥ 0.4MPa pressure.
(3) Organic pollution can be cleaned with surfactants, and the cleaning effect of cell fragment pollution system combined with enzyme is better (food and beverage can be cleaned with high concentration of citric acid).
(4) the above methods can be used alone or alternately with each other. If there are conditions, the effect of ultrasonic cleaning machine is the best. Note: it is necessary to regularly backwash online (online cleaning with pure compressed air or filter raw liquid or clean water backwash), can reduce the number of cleaning using the above methods.
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For more than 30 years, we have provided high quality filtration products to domestic and foreign customers, such as SS316L sintered fiber felts, SS316L multilayer wire mesh, SS312 sintered fiber felts, sintered special performated screen, sintered metal powder elements, and other sintered filter materials, filter elements and filtration equipment systems.
