Working Principle of Titanium Rod Filter
The titanium rod filter operates based on the following principles. It consists of a stainless steel shell made from materials such as 304 or 316L stainless steel with porous titanium tubes serving as the inner filter element. The porous titanium tube possesses excellent properties, including high temperature and pressure resistance, resistance to strong acids and alkalis, corrosion resistance, and the ability to be regenerated multiple times. The filter tube is manufactured using a metallurgical method that involves creating a hollow structure from titanium metal powder without the need for high-temperature sintering. This filter is extensively used for liquid-solid separation in various industries such as food, beverage, medicine, and chemicals. It is particularly suitable for large-scale infusion and injection production lines in the pharmaceutical sector.
Application Example: Decarbonization Filtration
The titanium rod filter, equipped with a sintered titanium powder filter element, is commonly employed for coarse or intermediate filtration during decarbonization processes. This filter element offers several advantages, including high precision, resistance to high temperatures, corrosion resistance, and high mechanical strength. It complies with the Good Manufacturing Practice (GMP) standards.
sintered filter
titanium rod filter
Principle of Selecting a Titanium Rod Filter
The selection of an appropriate titanium rod filter model is crucial for achieving optimal filtration results in practical applications. The following principles are considered when selecting a titanium rod filter:
1. Inlet and Outlet Diameter: The filter's inlet and outlet diameter should ideally match or be larger than the diameter of the connected pump's inlet. Typically, it is recommended to use the same diameter as the inlet pipeline.
2. Nominal Pressure: The filter's pressure level should be chosen based on the highest pressure expected in the filtration pipeline.
3. Filtration Precision: The particle size of the impurities to be captured is a key factor. The filtration precision is determined according to the technical requirements of the specific medium and process.
4. Calculation of Filter Resistance Loss: For water filters, the pressure loss is typically between 0.52 and 1.2 kPa at the rated flow rate. Selecting the appropriate filtering equipment is crucial for achieving the desired filtration efficiency.
Application Example: Pharmaceutical Factory
In a pharmaceutical factory, the recommended filtration approach for decarbonization involves multiple stages to ensure optimal results. The charcoal used in pharmaceutical factories is typically 767 injection charcoal or 737 medicinal charcoal, with a particle size ranging between 70-320 mesh. To intercept carbon particles of different sizes, improve flow rate, prolong cleaning cycles, and enhance the filter element's lifespan, a two-stage filtration system is recommended.
In the first stage, a 3-core 3μm titanium rod without residue filter is used to intercept larger carbon particles. For the second stage, a 3-core 1μm titanium rod without residue filter is employed. This two-stage filtration process effectively intercepts over 99.5% of activated carbon particles.
Additionally, to ensure the longevity of the terminal filter element, a 0.45μm filter element is used for coarse filtration after dilution. These filters can be customized as non-residue filters based on the factory's requirements.
In summary, for decarbonization filtration in a pharmaceutical factory, a two-stage titanium rod without residue filter is recommended. The first stage employs a 3μm titanium rod, while the second stage utilizes a 1μm titanium rod. This configuration ensures efficient filtration and interception of activated carbon particles.
