The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 16, 2008
Filed:
Jul. 04, 2002
Kari Sundman, Pirkkala, FI;
Markku Raiko, Hyvinkää, FI;
Mika Repka, Helsinki, FI;
Jari Sutinen, Espoo, FI;
Kari Sundman, Pirkkala, FI;
Markku Raiko, Hyvinkää, FI;
Mika Repka, Helsinki, FI;
Jari Sutinen, Espoo, FI;
Metso Power Oy, Tampere, FI;
Abstract
Method for treatment of spent liquor at a pulp mill, in which method at least a part of the spent liquor flow arriving from the evaporation plant is taken to a pyrolysis reactor, wherein it is pyrolysed at a temperature of 300-800° C. in order to separate evaporable compounds from the coke remaining in a solid state. The pyrolysis products, which are gases or liquids, may be used as fuel or they may be processed further. The coke resulting from the pyrolysis is burnt in a soda recovery boiler or in a gasification reactor to regenerate cooking chemicals. The method is suitable for recovery of chemicals and energy both in sulphate and sulphite processes and also in cooking methods based on organic solvents.