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:
Jan. 30, 2001
Filed:
Feb. 17, 1998
Applicant:
Inventors:
Tuomo Ruohola, Tampere, FI;
Matti Salmela, Tampere, FI;
Assignee:
Kvaerner Pulping Oy, Tampere, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F22B 3/710 ; F22B 3/700 ; F23M 5/00 ;
U.S. Cl.
CPC ...
F22B 3/710 ; F22B 3/700 ; F23M 5/00 ;
Abstract
In a recovery boiler for burning spent liquor of a pulp mill, a combustion chamber has heat transfer walls formed of tubes, at least one vertical heat transfer surface formed of tubes, and superheaters in an upper part of the combustion chamber for recovering heat generated by combustion and for cooling flue gases. The at least one vertical heat transfer surface divides the combustion chamber in a transverse direction into two combustion spaces.