Method and arrangement for cleaning pipe-shaped filter elements

US6736881B2 · kind B2 · utility

Assignees

• Forschungszentrum Karlsruhe GmbH · DE
• Pall Corporation · US

Inventors

• Hans Leibold · Ettlingen, DE
• Robert Mai · Karlsruhe, DE
• Bernd Zimmerlin · Rheinstetten, DE
• Karsten Schulz · Melbourne, AU

Key dates

• Filing date: Sep 28, 2001
• Grant date: May 18, 2004
• Expiry date: Dec 26, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/0396
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

In a method and apparatus for cleaning pipe-shaped filter elements arranged in a housing including a separation wall dividing the housing into a clean gas space and a raw gas space into which the filter elements extend from the clean gas space through the separation wall and the raw gas is directed from the raw gas space through the filter elements into the clean gas space while dust is removed from the raw gas and collected on the filter elements, the filter elements are cleaned from time to time by supplying momentarily pressurized flushing gas to the clean air space which, at the same time, is closed to generate a flushing gas pulse providing for a backflow of clean gas from the clean gas space to the raw gas space, which dislodges dust collected on the filter elements.