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:
Oct. 17, 1995
Filed:
Jun. 06, 1994
Maynard G Ding, Yorktown Heights, NY (US);
Praxair Technology, Inc., Danbury, CT (US);
Abstract
A Process for combusting sulfur vapor released from a sulfur bearing material, comprising: (a) introducing a sulfur bearing material into a furnace having a combustion zone; (b) ejecting at least one fuel stream with or without a substoichiometric amount of at least one primary oxidant stream and combusting said at least one fuel stream with the substoichiometric amount of the primary oxidant stream or ambient gas in the combustion zone to produce heat sufficient to release some sulfur vapor from the sulfur bearing material and to form combustion products containing unburned fuel; (c) ejecting at least one secondary oxidant stream angled away or spaced from the fuel stream and primary oxidant stream; (d) causing a recirculating flow within the combustion zone to dilute at least a portion of the combustion products, secondary oxidant, sulfur vapor, unburned fuel and ambient gas in the furnace; and (e) combusting the sulfur vapor and the unburned fuel with said secondary oxidant. Alternatively, the fuel stream may be introduced with a superstoichiometric amount of the primary oxidant stream, with or without the secondary oxidant, such that excess oxygen is reacted with sulfur vapor released from the sulfur bearing material to produce more heat.