POREX® Radial Cartridge

Porex Radial Cartridge Filter

Application: Hydrogen Peroxide Platinum Catalyst Recovery

Target Market: Chemical and Refineries

Application Description
Platinum is used to catalyze hydrogen and oxygen into hydrogen peroxide (H2O2). As a catalyst, platinum acts only as an agent in the reaction and is not affected by the process. This makes it available for reuse. It is important to easily and completely recover the platinum from the solution for reuse. Filtration of platinum catalyst can be an effective methodology to accomplish this purpose.

Porous Polyethylene

Types of Filters Used
Typically, pleated polypropylene meltblown cartridges or sintered metal tubular filters are used in platinum catalyst recovery applications. The pleated polypropylene cartridges are incinerated to recover the platinum while the sintered metal filters are backflushed.

Purpose of Filtration 
The primary purpose of the filtration of platinum catalyst is to capture and recover the platinum catalyst for reuse. The difference in the type of filter used is based on how the platinum is recovered from the filter. If incinerated, polyolefin filters are used. If backflushed, metallic filters are used.

Common Filtration-Related Problems

  • Loss of catalyst caused by by-pass or bleed through
  • Poor recovery from incineration or backflushing
  • High backflush frequency caused by limited surface area

Sintered High-Density or Ultra-High Molecular Weight Polyethylene
Rigid, Omni-Directional Pore Structure
  • Absolute Ratings
  • Consistent pore structure minimizes performance changes caused by differential pressure
  • Reproducible performance
  • Narrow Pore Size Distribution
  • Highly-effective surface filtration for particles larger than the filter pore size rating
  • Allows for effective cleaning, backwash and reuse
  • Thermally-Bonded
  • Sintered omni-directional pore structure
  • No media migration, bypass or unloading from 5 to 100 microns
  • Excellent Chemical and Thermal Compatibility
  • High chemical resistance of HDPE and UHMWPE
  • Completely incineratable with a high BTU output
  • No chemical degradation resulting in bypass or contamination of the process fluid
  • No incineration residue
Unique, Molded Radial Design
  • High Surface Area
  • Low pressure drop and higher flow rate
  • Increased life or fewer filters results in lower filtration costs
  • Open Channels
  • Easy access to filtration area
  • Effective filtration and cleaning
  • Single-Layer Structural Media
  • Eliminates unnecessary support materials
  • Improves backwash and cleanability
  • Rigid, One-Piece Construction
  • Multiple diameters, lengths and end configurations
  • Easily adapts to existing filtration systems

Performance Comparison

Rigid, Omni-Directional Pore Structure

POREX Radial
Cartridge Filter vs
Micron Rating =/- =/- =/-
Absolute Filtration =/+ =/+ =
Surface Retention =/+ + =
Classification Filtration =/+ + =
Sintered Process + + =
Polyolefin Material = = +
Chemical Compatibility = = =/-
Thermal Compatibility = = =/-

Unique, Molded Radial Design

POREX Radial
Cartridge Filter vs
Backflushable + + =
Surface Area + - +
Molded Construction + + +
Rigid Structure =/+ + =
Open Pleats + + +
Disposal Cost + + +
Performance Priced + + +
Single Material = =/+ +
Vessel Seal = = =
Housing Fit = = =/-
Symbol Key: = Porex equivalent | + Porex advantage | - Porex potential limitation