Double-staged oxy-fuel burner

A burner and oxygen technology, applied in the direction of gas fuel burner, burner, staged combustion, etc., can solve the problems of weakening the convection of the melt to drive the secondary flow, interrupting the clarification process, and reducing the glass temperature

Active Publication Date: 2018-08-28
AIR PROD & CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of lower glass heat transfer rate, this lowers the temperature of the glass, weakens the convection-driven secondary flow within the melt, interrupts the fining process, and allows more defects to persist in the finished product

Method used

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  • Double-staged oxy-fuel burner
  • Double-staged oxy-fuel burner
  • Double-staged oxy-fuel burner

Examples

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Embodiment Construction

[0059]As used herein, the term "oxygen" refers to molecular oxygen (O 2 ) concentration is greater than the oxygen in the air (O 2 ) concentration (i.e., greater than 20.9 mol%), and in some embodiments, the oxygen has at least 23 mol% O 2 , at least 30mol% O 2 , at least 70mol%O 2 or at least 90mol%O 2 .

[0060] As used herein, the term "oxy-fuel burner" means a burner as defined herein combusting fuel and oxygen.

[0061] As used herein, the term "fuel" includes any mixture of hydrocarbons capable of burning, including specifically gaseous, liquid, and powdered solid fuels. All data presented here are for natural gas as the fuel, but the results are considered generally applicable to other fuels, especially other gaseous fuels.

[0062] As used herein, the term "staged" means supplying a portion of a staged reactant through a nozzle spaced from a burner element through which another reactant is supplied. For example, when discussing burner elements, if the oxygen is ...

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Abstract

An oxy-fuel burner includes a central burner element having a central conduit terminating in a central nozzle and an annular conduit terminating in an annular nozzle surrounding the central conduit, the central conduit flowing a first reactant and the annular conduit flowing a second reactant; a first staging conduit spaced apart from a side of the central burner element and terminating in a firststaging nozzle; a second staging conduit spaced apart from an opposite side the central burner element and terminating in a second staging nozzle; a first mechanism to apportion a flow of the secondreactant into a non-zero primary flow of the second reactant directed to the annular conduit and a non-zero secondary flow of the second reactant; and a second mechanism to selectively apportion the secondary flow of the second reactant between the staging conduits; wherein one reactant is fuel and the other reactant is oxygen.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application No. 62 / 461,946, filed February 22, 2017, which is incorporated by reference in its entirety. Background technique [0003] The present application relates to an oxy-fuel burner and method of operation thereof, and more particularly to an oxy-fuel burner capable of producing a staged flame in two alternate configurations, wherein staged oxygen is introduced above or below the fuel-rich main flame, Or both above and below the fuel-rich main flame, depending on furnace operating conditions and parameters. [0004] The burner and the method of the present application have addressed certain persistent problems in oxy-fuel combustion, particularly in glass melting furnaces. [0005] First, it is difficult to produce high brightness in an oxygen-natural gas flame. In the visible and near-infrared regions of the electromagnetic spectrum, substantial thermal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/02F23D14/62C03B5/235
CPCC03B5/2353F23D14/02F23D14/62F23N5/003F23N5/02F23C2900/06041F23D14/22F23D14/32F23M5/025F23D2900/00013Y02E20/34Y02P40/50F23D14/70F23C5/28F23D2203/007C03B5/16F23C2201/101F23D14/56
Inventor M.D.达戈斯蒂尼A.G.斯拉夫科夫M.D.巴津斯基W.J.霍兰
Owner AIR PROD & CHEM INC
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