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:
Sep. 11, 1984
Filed:
Oct. 14, 1981
George L Riggs, Alleghany, NY (US);
CF Industries, Inc., Long Grove, IL (US);
Abstract
A converter igniter is provided for igniting a converter screen assembly which acts as a catalyst for vapor phase oxidation of ammonia in a nitric acid reduction process. The igniter includes an elongate gas delivery tube and structure for sealably mounting the gas delivery tube with one end thereof within the vapor phase oxidation chamber. An igniting structure is provided at the end of the elongate gas tube includng a spark plug completely recessed within the end of the tube and a plurality of apertures in the tube end for producing a diffuse flame. An elongate rod-like conductor is concentrically mounted within the gas delivery tube and electrically and physically isolated therefrom by means of a concentrically mounted surrounding insulator structure. The structure for sealingly mounting the elongate tube to the vapor phase oxidation chamber includes a releasable sealing structure for selectively permitting slideable movement of the elongate tube, generally in the direction into and out of the chamber and further includes a ball joint through which the tube is slideably movable for further permitting angular motion of the tube within the chamber.