Device for the purification of contaminated exhaust air through heterogeneous catalysis

US5567392A · kind A · utility

Assignee

• Mannesmann AG · DE

Inventors

• Oliver Becker · Ludwigsburg, DE
• Sabine Kolz · Großrosseln, DE
• Herbert Hager · Nalbach, DE

Key dates

• Filing date: Jun 28, 1994
• Grant date: Oct 22, 1996
• Expiry date: Jun 28, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A device for the purification of an exhaust gas containing at least one contaminant removable through heterogeneous catalysis and flowing through a chamber having an inlet and an outlet, comprises at least one disk structure positionable within the chamber and defining a central cavity alignable with the inlet of the chamber. The disk structure includes a non-metallic, gas-permeable and flexible carrier element comprising a band woven of glass fiber yarn. The yarn is formed of individual fibers coated with a layer of pulverized zeolitic material defining a molecular sieve and having a catalytic material, selected to act adsorptively upon the at least one contaminant, dispersed therein. The device further includes a heatable metallic woven band disposed in laminar relation with the carrier element, the metallic woven band and carrier element being wound spirally end-over-end, whereby exhaust gas flowing into the central cavity from the chamber inlet passes through the woven bands and the at least one contaminant is removed therefrom. A plurality of disk elements may be stacked and positioned within a cylindrical housing a having perforated sidewall, an inlet end, and a sealed end. E…