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:
Feb. 02, 1999
Filed:
Dec. 02, 1996
Applicant:
Inventors:
Goran Berglund, Sandviken, SE;
Ulf Eriksson, Goteborg, SE;
Assignee:
Edmeston AB, Goteborg, SE;
Primary Examiner:
Int. Cl.
CPC ...
F28D / ;
U.S. Cl.
CPC ...
422201 ; 422150 ; 422200 ; 422202 ; 422203 ; 165 82 ; 165160 ;
Abstract
Carbon black is produced by burning a mixture of air and oil to produce hot gases and then conducting the hot gases through tubes extending through a chamber of a heat exchanger. Heat exchange air is conducted through the chamber in a direction opposite the direction of gas flow, in heat-exchange relationship with the tubes, to pre-heat the air. The pre-heated air is then mixed with the oil to be burned. Prior to entering the chamber, the air is conducted within a hollow section of the wall structure of the heat exchanger to transfer heat from a hot end of the wall structure toward a cooler end thereof.