English Translation (industrial professional version, official website style)

Many customers often consult us: my material operates at high temperature with extremely high or low pH value. Which option is more suitable, ceramic membrane tubes or sintered metal powder filter cartridges?

There is no one-size-fits-all answer, as the "optimal choice" depends entirely on the inherent properties of your material. As application engineers from Henan Yongxin Technology, our daily work is to develop perfectly tailored solutions for customers under various working conditions. Today we will sort out three key factors to clarify your selection logic.

1. Operating Temperature

If the material runs continuously above 200°C, such as high-temperature oil and polymer melts in the petrochemical industry, sintered metal powder filter cartridges are your ideal choice. Sintered stainless steel filters can withstand temperatures of 300°C or even higher, which exceeds the maximum temperature resistance of ceramic materials. When the temperature stays below 100°C, both products are applicable, and you may refer to other indicators for decision-making.

2. pH Value and Chemical Environment

Ceramic materials boast outstanding performance in this aspect. Ceramic membrane filter cartridges made of alumina and zirconia feature excellent resistance to strong acids and alkalis, covering the full pH range of 1 to 14. Metal membrane tubes are also corrosion-resistant, yet 316L stainless steel performs poorly in highly concentrated strong alkali or strongly oxidizing environments. Switching to titanium or Hastelloy materials is required in such scenarios, which will greatly increase costs.

3. Material Characteristics: Viscosity and Abrasiveness

We analyze the inherent traits of your feed fluid — whether it is viscous or contains hard abrasive particles.

Viscous media prone to membrane fouling, such as fermentation broth and oily wastewater, benefit from ceramic membranes whose surface properties are ideal for anti-fouling modification, delivering extended cleaning intervals. For fluids loaded with hard, highly abrasive particles including catalyst slurries and mineral powders, sintered metal filter cartridges offer superior toughness and are less susceptible to brittle fracture.

Summary

• High temperature, high pressure and heavy abrasion — Metal membrane tubes (316L or titanium series from Yongxin Technology) are recommended first;

• Strong acid/alkali service, biopharmaceutical and food industries — Ceramic membrane filtration systems are preferred;

• Complicated working conditions with uncertain selection — Send us your sample for lab pilot testing.

At the laboratory of Henan Yongxin Technology, we complete process verification for hundreds of clients annually. The most expensive solution is not always the right one; what you truly need is a partner proficient in feed materials, membrane media and complete filtration systems. This is where the value of our customized filtration equipment lies.