Main applications of stainless steel melt filter elements

Advantages of Stainless Steel Filter Elements:

- Wide temperature range (-200～400℃)

- High pressure resistance (10-15MPa)

- Reusable after cleaning (ultrasonic or chemical cleaning)

- 316L material meets food and pharmaceutical grade requirements

1. Polyolefin Production (approximately 40%)：

- Filtering catalyst residue in polyethylene/polypropylene (PE/PP) plants.

- Protection of reactor discharge pipelines, removing 20-50μm gel particles.

- Protection of granulator front end to prevent die clogging.

2. Synthetic Rubber Production (approximately 25%):

- Melt filtration of thermoplastic elastomers such as SBS/SEBS.

- Removal of unreacted styrene monomer clumps.

- Fiber impurity filtration in butyl rubber production.

3. Chemical Fiber Raw Material Preparation (approximately 20%):

- Precision filtration before polyester (PET) melt spinning.

- Oligomer removal in nylon 6/66 production.

- High-precision filtration requiring 5-20μm.

4. Specialty Resin Production (15%):

- Terminal Filtration of Epoxy Resins.

- Optical-Grade Purification of Polycarbonate (PC).

- Impurity Control of Food-Grade EVA Hot Melt Adhesive.

These applications generally use 316L stainless steel sintered filter elements, while Hastelloy materials are used in some highly corrosive conditions. The filter element structure is mainly composed of multi-layer metal fiber felt, balancing high filtration accuracy and large dirt-holding capacity.

Xinxiang Deya specializes in the R&D and production of stainless steel melt filter elements. Leveraging the advantages of Xinxiang's filtration industry cluster, it creates high-quality filter elements suitable for extreme operating conditions. The products are made of high-quality stainless steel such as 304 and 316L, combined with argon arc welding and core filter materials such as sintered felt and woven mesh, possessing high temperature resistance (up to 500℃), high pressure resistance (up to 30MPa), and corrosion resistance.

Filtration accuracy is customizable from 1-200μm, with uniform pore size, high air permeability, and large dirt holding capacity.

The pleated structure increases the filtration area, providing excellent regenerability; it can be repeatedly used after cleaning.

The all-metal structure is stable and reliable, suitable for complex operating conditions with high pressure differentials and high flow rates.

Widely used in petrochemical, chemical fiber, metallurgy, electronics, and pharmaceutical industries, it achieves efficient purification of high-viscosity melts, hydraulic oils, and fire-resistant oils, ensuring stable production processes.