Strainer arrangement for straining liquid from a mixing arrangement

US6395171B1 · kind B1 · utility

Assignee

• Kvaerner Pulping AB · SE

Inventors

• Gustav Carlsson · Gothenburg, SE
• Tommy Eriksson · Kungälv, SE
• Christer Isaksson · Lindome, SE
• Sven-Erik Jansson · Gothenburg, SE
• Lennart Lindau · Mölndal, SE
• Bengt E. Nyman · Tempe, US
• Lars Olausson · Partille, SE
• Hans Håkan Sjöberg · Stenungsund, SE
• Jan Bergman · Spånga, SE

Key dates

• Filing date: Jul 7, 1999
• Grant date: May 28, 2002
• Expiry date: Jul 7, 2019

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D29/6484
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The strainer arrangement is adapted for straining a liquid from a mixing arrangement, such as a mixing tank, containing black liquor including solid particles of ash. The strainer arrangement comprises a strainer pipe with axial gaps defined therein for permitting a radial inflow of liquid into the strainer pipe. An axially movable shaft is disposed inside the strainer pipe and has cleaning pins attached thereto that extend into the gaps.