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Andritz Oy patents


Recent patent applications related to Andritz Oy. Andritz Oy is listed as an Agent/Assignee. Note: Andritz Oy may have other listings under different names/spellings. We're not affiliated with Andritz Oy, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "A" | Andritz Oy-related inventors


Method and arrangement for burning lime mud

An arrangement for burning lime mud into lime in a lime kiln. The lime mud flows counter-currently to flue gases from a feed end to a firing end and the fuel used is flue gas that is produced by gasifying a fuel in the presence of combustion air in a... Andritz Oy

Heating of hydraulic digesters

A method and system for heating a hydraulic digester, such as a single-vessel hydraulic digester, which has a top separator, a level of chips and a liquid phase above the level of chips. The method includes: a. entraining chips in liquor to produce a slurry having a first temperature, b.... Andritz Oy

Method for handling spent wash solution of a lignin-recovery process

A method for handling spent wash solution produced in the washing of lignin that has been precipitated and then separated from spent alkaline pulping liquor. At least part of the spent wash solution is introduced into the chemical recovery cycle at a location in that part of the cycle which... Andritz Oy

A feeding a sealing medium into a liquor filter and a liquor filter

A method and a liquor filter, in which liquor filter sealing medium is fed via a sealing medium channel (3) into an innermost sealing zone formed by an innermost sealing member (1), an outer seal (2) and the space between them at a causticizing plant of a chemical pulp mill.... Andritz Oy

Method for utilizing lignin separated from black liquor as lime-kiln fuel

A method of utilizing lignin-containing material separated from spent kraft pulping liquor including: acidifying the liquor to a pH not less than seven thereby precipitating solid particles, separating precipitated solid particles from the accompanying liquid, and subjecting the separated precipitated solid particles to a washing process in which: the separated... Andritz Oy

Method and arrangement for generating steam at a digester plant of a chemical pulp mill

The present invention relates to a method of producing steam at a digester plant of a chemical pulp mill. Black liquor is discharged from the digester at a first temperature and pressure. The black liquor is treated in a flash tank for generating flashed black liquor and flash steam at... Andritz Oy








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