Burner panels, submerged combustion melters, and methods

a technology of combustion melters and burner panels, which is applied in the direction of combustion types, lighting and heating apparatuses, manufacturing tools, etc., can solve the problems of high turbulence and foaming, rapid melting of glass batches or other feedstocks, and it is not economically feasible to fabricate the entire burner using these materials. , to achieve the effect of reducing or eliminating problems

Inactive Publication Date: 2020-08-20
JOHNS MANVILLE CORP
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This approach extends the operational life of submerged combustion burners by reducing thermal stress and corrosion, improving mechanical strength, and allowing for the use of non-noble metal materials, thereby enhancing the durability and cost-effectiveness of the burner components.

Problems solved by technology

The introduction of high flow rates of products of combustion of the oxidant and fuel into the molten material, and the expansion of the gases during submerged combustion (SC), cause rapid melting of the glass batch or other feedstock and much turbulence and foaming.
However, being expensive alloys, it is not presently economical to fabricate the entire burner using these materials.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Burner panels, submerged combustion melters, and methods
  • Burner panels, submerged combustion melters, and methods
  • Burner panels, submerged combustion melters, and methods

Examples

Experimental program
Comparison scheme
Effect test

embodiment 300

[0037]Referring again to FIG. 1A, fuel and oxidant conduits 4, 6, may extend above first major surface 8 by heights h1 and h2 respectively, which may be the same or different. Referring to embodiment 300 illustrated in FIG. 1C, fuel conduit 4 includes a distal end 28 and a proximal end 30, while oxidant conduit 6 includes a distal end 32 and a proximal end 34. Heights h1 and h2 of distal ends 28 and 32 may each range from about 0 (in other words, flush with major surface 8 or body panel 2), or in the alternative, the heights h1 and h2 may have a magnitude in the range of at least 5 cm or greater; or in the alternative, the heights h1 and h2 may have a magnitude in the range of at least 15 cm or greater; or in the alternative, the heights h1 and h2 may have a magnitude in the range of at least 25 cm or greater; or in the alternative, the heights h1 and h2 may have a magnitude in the range of at least 30 cm or greater. Theoretically the magnitude of heights h1 and h2 are limited only ...

embodiment 200

[0038]FIG. 1B illustrates schematically embodiment 200, where fuel conduit 4 and oxidant conduit 6 are angled toward each other at angles θ1 and θ2, which may be the same or different, and each may independently range from about 20 to about 90 degrees. All individual values and subranges from about 20 to about 90 degrees are included herein and disclosed herein. For example, the angles used can be from a lower limit of about 20, 21, 23, 25, 27, 29, 31, 33, 35, or 40 to an upper limit of 50, 52, 54, 56,58, 60, 75, 80, 85, or about 90 degrees. For example, the angles θ1 and θ2 may be in the range of from about 30 to about 80 degrees, or in the alternative, the angles θ1 and θ2 may be in the range of from about 40 to about 70 degrees, or in the alternative, the angles θ1 and θ2 may be in the range of from about 40 to about 50 degrees.

[0039]FIG. 1B also illustrates diameters d2 and d3 of fuel and oxidant conduits, respectively. Fuel and oxidant conduits 4 and 6 may be round or other cro...

embodiment 800

[0045]FIG. 3 illustrates schematically, embodiment 800, wherein fuel and oxidant are injected at the same point but may be injected at different times through a single conduit 36 connected fluidly at 38 to a “T” connection 40, and to an oxidant supply conduit 42 and associated valve or flow oscillator 46, and to a fuel supply conduit 44 and associated valve or flow oscillator 48. For example, a burner flowing only oxygen for 1 second and then only fuel for 1 second; thus, the oxygen and fuel would mix above the burner tip keeping most combustion away from the burner tip.

[0046]Other options are to use one or more slot nozzles for the introduction of the oxidant or fuel with small radial nozzles inside the oxidant or fuel slot for the introduction of the fuel or oxidant. This would change the glass and burner flows relationship relative to thermal stress and these designs are also easily scaled in size by increasing the length of the slot. Another version of this is replacing the radi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
distanceaaaaaaaaaa
distanceaaaaaaaaaa
distanceaaaaaaaaaa
Login to View More

Abstract

Combustion burner panels, submerged combustion melters including one or more of the panels, and methods of making the same are disclosed. In certain embodiments, the burner panel includes a panel body having first and second major surfaces, at least one oxidant through-passage extending from the first to the second major surface, and at least one fuel through-passage extending from the first to the second major surface. Oxidant and fuel delivery conduits are positioned in the respective passages. The oxidant and fuel delivery conduits include proximal and distal ends, at least some of the distal ends positioned away from the first major surface of the panel body. In other embodiments the burner panels include a frame enclosing a porous material having through passages for fuel and oxidant. The burner panels may enable delaying combustion in a submerged combustion melter, and therefore promote burner life and melter campaign length.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This patent application is a division of pending U.S. patent application Ser. No. 14 / 838,148, filed Aug. 27, 2015.BACKGROUND INFORMATIONTechnical Field[0002]The present disclosure relates generally to the field of combustion burners and methods of use, and more specifically to burners, submerged combustion melters, and methods of their use, particularly for melting glass-forming materials, mineral wool forming materials, and other non-metallic inorganic materials.Background Art[0003]A submerged combustion melter (SCM) may be employed to melt glass batch and / or waste glass materials to produce molten glass, or may melt mineral wool feedstock to make mineral or rock wool, by passing oxygen, oxygen-enriched mixtures, or air along with a liquid, gaseous and / or particulate fuel (some of which may be in the glass-forming materials), directly into a molten pool of glass or other material, usually through burners submerged in a melt pool. The intr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityApplications(United States)
IPC IPC(8): F23C3/00C03B5/235F23D14/78F23D14/22F23D11/36F23D11/12B23H1/00
CPCF23D14/78F23D14/22B23H1/00C03B2211/23F23D11/36C03B5/2356F23D11/12F23C3/004Y02P40/50
InventorBAKER, JOHN WAYNELUKA, MICHAEL WILLIAMMCCANN, JONATHANHUBER, AARON MORGANCHARBONNEAU, MARK WILLIAMSEGAR, PAUL OSCARGRAF, JAMES E
OwnerJOHNS MANVILLE CORP