New large diameter automotive catalyst extruder

Orthos introduces a BMS-KEMA high-pressure extruder, the VENR 500, for the manufacture of large-size catalyst honeycomb units for use in Selective Catalytic Reduction (SCR) systems for diesel engines

The extruder was designed to achieve a high level of NOx reduction in diesel engine exhaust gases even at low temperatures.

The unit, with its auger diameter of 500mm and extrusion pressures of up to 80 bar, can perform the very arduous duty of extruding catalyst honeycombs with diameters in excess of 12'' and cell densities in the range 300 - 400 cpsi (cells per square inch) using a press body based on a TiO2-V2O3-WO3 mixture.

This body is much more abrasive and corrosive than, for instance, cordierite, which is frequently used as a substrate.

Orthos can also supply BMS-KEMA extruders with an auger diameter of 350mm designed for the production of smaller honeycomb structures for use as particulate filters and catalyst units, and extruders with auger diameters in the range, 200mm - 750mm, for the production of ceramic insulators and other components.

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