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:
Jul. 09, 1991
Filed:
Feb. 24, 1989
Applicant:
Inventors:
Rolf E Malmstrom, Helsinki, FI;
Pekka O Ritakallio, Hameenlinna, FI;
Assignee:
A. Ahlstrom Corporation, Noormarkku, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F22D / ;
U.S. Cl.
CPC ...
122 / ; 110234 ; 110233 ;
Abstract
The invention relates to a method of improving the heat recovery in a waste head boiler, in which gas, produced in high-temperature processes and containing molten and/or solid particles and/or evaporated components, is cooled. In a waste heat boiler, a slowly cooling zone, i.e. a hot 'tongue' is generally formed in the gas flow. To improve the cooling of the hot 'tongue', gas and/or solid particles and/or vaporizing liquid, such as circulating gas or circulating particles separated from the process and cooled, are introduced into the hot zone or 'tongue'.