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. 06, 1979
Filed:
Nov. 29, 1978
Sidney M Heins, Chicago, IL (US);
Other;
Abstract
A low-cost method of taking sulfur out of coal in stoker furnaces comprising mixing the coal with natural-occurring flue dust from steel-making, pulverized red mud from aluminum-making, of pulverized retort residues from zinc-making, or a pulverized prepared material comprising principally the ferrites and oxides of certain minerals and at least a trace of ferric oxide as a catalyst for accelerating the conversion of sulfur dioxide to sulfur trioxide and heating the mixture in the combustion zone of the furnace in the presence of water vapor from the fuel to form sulfuric acid for oxidizing said natural-occurring or prepared sulfur dioxide absorbent materials into sulfates and precipitating the same along with ash in the fuel to the bottom of the furnace.