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. 05, 1993
Filed:
Jan. 10, 1992
Gerald T Amrhein, Louisville, OH (US);
Stanley J Vecci, Alliance, OH (US);
John M Rackley, Alliance, OH (US);
The Babcock & Wilcox Company, New Orleans, LA (US);
Abstract
A process and apparatus for simultaneously removing NO.sub.X and SO.sub.X from the exhaust of a furnace includes an injection of limestone into a region of the furnace having a temperature of about 2,000.degree.-2,400.degree. F., and an injection of ammonia into a region in the furnace having a temperature of about 1,600.degree.-2,000.degree. F. The limestone absorbs at least some of the SO.sub.X and the ammonia absorbs at least some of the NO.sub.X. The exhaust from the furnace which contains particulate and gases, is supplied to a dry scrubber where further reactions take place between unused ammonia and SO.sub.X, and calcium sorbent and SO.sub.X. Sorbent and ammonia regeneration can also be utilized to further improve the efficiency of the system.