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:
Nov. 15, 1988
Filed:
Apr. 22, 1987
Lennart Karlsson, Alings.ang.s, SE;
Leif Karlsson, Bollebygd, SE;
Other;
Abstract
Each of a pair of heat exchangers in a combustion plant includes a storage space holding basic granules, and will alternatingly be flown through by combustion gas and air, respectively. Residual heat from the combustion gas will be absorbed by the granules, and the moisture contend of the gases will condense upon the granules. Sulphur dioxide in the combustion gas will react with the basic material to calcium sulphite, and the moist granules will catch ash particles and other cntaminants in the gas. When valves have been re-set, air is made to pass through the granules, whereby it will be preheated. The heated air may be conducted to a burner, to a regeneration apparatus for the granules, or through a conduit to the gas exhaust duct. After some time of operation the granules are transferred to the regeneration apparatus, which includes a rotatable drum, where the granules will be subjected to mechanical working and separation of calcium sulphate and dust particles, preferably while being heated.