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:
Aug. 16, 2011
Filed:
Jul. 17, 2008
Jotaro Miyata, Komaki, JP;
Takashi Goshima, Kohnan, JP;
Chikashi Ihara, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A to-be-burned object including a metal Si component or SiC or SiNcan be burned in such a manner that vaporized SiO can be safely exhausted without causing SiO attached to a wall of a furnace or an inner face of an exhaust duct. An exhaust method of a continuous furnace for continuously burning a to-be-burned object containing a metal Si component or highly-fire-resistant SiC or SiNincludes steps of 1) exhausting in-furnace gas including SiO vaporized during a burning process. An exhaust ductused for this exhaust is provided at an upper part of a side wallof the furnace having a higher temperature (1300 degrees C. or more) than a concentration temperature of SiO vaporized during a burning process. 2) oxidizing the exhausted SiO at the outside of the furnace to detoxify SiO. The in-furnace gas exhausted by the exhaust ductis guided to an exhaust pipeconnected to an outlet of the exhaust ductat the outside of the furnace. This exhaust pipeincludes oxygen supply holesand. By sending oxygen supplied from an appropriate oxygen supply source into the exhaust pipe, SiO guided to the exhaust pipereacts with oxygen and is detoxified.