Filtering Acidic Water from Ammonia Wash Towers – Basket Filter

I. Working Condition Background: The Harsh Challenges of Acidic Fluids

The 8-inch filter used by the Israeli customer processes acidic water from the ammonia wash tower, with a pH value of approximately 3. It not only contains 25% ammonium sulfate but also contains a small amount of particles generated during air washing. This highly acidic and corrosive medium environment places extremely high requirements on the corrosion resistance and structural stability of the filter material. The presence of ammonium sulfate accelerates the corrosion and aging of common metal materials, while suspended particles may cause internal blockage of the filter, affecting the long-term stable operation of the equipment. Therefore, it is crucial to select a filter device that is highly adaptable.

II. Custom Recommendation: 316L + PTFE Coated Basket Filter

In response to the above harsh working conditions, after professional analysis and selection, we recommend to the Israeli customer a 316L stainless steel material combined with PTFE (polytetrafluoroethylene) coating basket filter. The core advantages of this solution are as follows:

Firstly, 316L stainless steel, as a commonly used corrosion-resistant material in the industrial field, has a lower carbon content compared to ordinary 316 stainless steel, with superior intergranular corrosion resistance, which can effectively resist the initial corrosion in the acidic environment, providing a solid foundation structure guarantee for the filter. Secondly, PTFE coating has the unique characteristics of “non-stick, corrosion-resistant, and high-temperature resistance”, known as the “plastic king”, which can remain stable in a pH range of 1-14 for strong acids and strong bases, firmly isolating the direct contact between the ammonium sulfate solution and the stainless steel substrate, fundamentally solving the erosion problem of corrosive media on the equipment, and significantly extending the service life of the filter.

At the same time, the structure design of the basket filter is adapted to the processing requirements of fluid containing particles. The built-in filter basket uses high-precision filtering materials, which can efficiently intercept a small amount of particles in the fluid, preventing pipeline blockage; and the basket structure is convenient for disassembly and cleaning, which can reduce equipment maintenance costs and ensure the continuous and stable operation of the filtration system, perfectly matching the actual working conditions of the customer.

III. Solution Value: The Optimal Choice for Safety and Efficiency

In the harsh corrosive acid fluid working conditions, ordinary stainless steel filters are difficult to withstand the erosion of the medium for a long time, prone to leakage and damage, not only increasing equipment replacement costs but also affecting production progress due to equipment shutdown for maintenance. While the 316L + PTFE coated basket filter, through the dual protection of material and coating, not only solves the corrosion problem of ammonium sulfate solution but also effectively handles particle impurities, achieving dual guarantees of protection and practicality.

This solution has been verified through multiple similar industrial working conditions and has mature application experience, providing reliable filtration support for the production process of the Israeli customer, helping the customer avoid equipment corrosion risks, reducing operation and maintenance costs, and is the optimal choice that combines safety, efficiency, and economy.