Burner support member, glass melting furnace, combustion burner replacement method, glass melting method, and glass manufacturing method

Abstract

To provide a burner support member that, when replacing an air combustion burner with an oxygen combustion burner, can install the oxygen combustion burner while suppressing deviation from an installation position of the air combustion burner without changing a position of equipment for the air combustion burner, and can reduce burden of a work of replacing the oxygen combustion burner.SOLUTION: A burner support member includes a support part installed in an opening part of a furnace wall of a glass melting furnace to support an oxygen combustion burner. The support part includes: a first support block installed in a bottom part of the opening part; a second support block installed between the first support block and an inner surface of the opening part; and a through-hole penetrating through the inside to the outside of the furnace wall between the first support block and the second support block, and supports the oxygen combustion burner inside the through-hole.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a burner support member, a glass melting furnace, a combustion burner replacement method, a glass melting method, and a glass manufacturing method. [Background technology]

[0002] The furnace wall of a glass melting furnace is provided with an air-fired burner that burns a mixture of gaseous fuel such as natural gas or liquid fuel such as heavy oil with air. The heat of the air-fired burner raises the temperature inside the glass melting furnace (hereinafter also referred to as the furnace interior) from room temperature to a temperature at which the glass raw materials supplied into the furnace can be melted.

[0003] As an air-fired burner, for example, a gas burner has been disclosed that has a burner body, a burner holding tube that houses the burner body so that it can slide longitudinally, and a casing that houses the burner holding tube, located outside the furnace wall of a glass melting furnace, and that forms a premixing space for mixing combustion gas and primary air by changing the size of the space formed on the tip side of the burner body, thereby maintaining combustion of the mixed gas (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-112652 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when replacing an air-fuel combustion burner such as the gas burner in Patent Document 1 with an oxygen-fuel combustion burner for the purpose of reducing CO2 emissions, etc., removing the equipment for the air-fuel combustion burner and installing new equipment for the oxygen-fuel combustion burner involves a significant switching work burden, which is problematic. Also, if the installation position of the oxygen-fuel combustion burner is misaligned with the installation position of the air-fuel combustion burner, the quality of the glass produced is likely to change.

[0006] An object of one aspect of the present invention is to provide a burner support member that allows the oxygen-fuel combustion burner to be installed without changing the position of the equipment for the air-fuel combustion burner when replacing the air-fuel combustion burner, while minimizing any deviation from the installation position of the air-fuel combustion burner, and that reduces the burden of the oxygen-fuel combustion burner replacement work. [Means for solving the problem]

[0007] One aspect of the burner support member according to the present invention is a support portion provided in an opening in a furnace wall of the glass melting furnace and supporting an oxygen combustion burner; The support portion is a first support block installed at the bottom of the opening; a second support block disposed between the first support block and the inner surface of the opening; a through hole penetrating from the inside to the outside of the furnace wall between the first support block and the second support block; The oxygen combustion burner is supported within the through hole. [Effects of the Invention]

[0008] One aspect of the burner support member according to the present invention makes it possible, when replacing an air-fuel combustion burner with an oxygen-fuel combustion burner, to install the oxygen-fuel combustion burner without changing the position of the equipment for the air-fuel combustion burner, while minimizing any deviation from the installation position of the air-fuel combustion burner, and also reduces the burden of the oxygen-fuel combustion burner replacement work. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a partial perspective view showing an example of a state in which a burner support member according to an embodiment of the present invention is installed in a glass melting furnace. FIG. [Figure 2] FIG. 2 is a cross-sectional view showing an example of a state in which a burner support member is installed on a furnace wall of a glass melting furnace. [Figure 3] 1 is a view showing a state in which a burner support member is installed on a furnace wall of a glass melting furnace, as viewed from inside the wall of the glass melting furnace. FIG. [Figure 4] FIG. 2 is a view showing a state in which refractories are installed on the furnace wall of the glass melting furnace, as viewed from outside the wall of the glass melting furnace. [Figure 5] FIG. 2 is an exploded perspective view showing the configuration of a burner support member. [Figure 6] FIG. 4 is an explanatory diagram showing a method for replacing a combustion burner. [Figure 7] FIG. 10 is another explanatory diagram showing a method for replacing the combustion burner. [Figure 8] FIG. 10 is another explanatory diagram showing a method for replacing the combustion burner. [Figure 9] FIG. 10 is another explanatory diagram showing a method for replacing the combustion burner. [Figure 10] FIG. 10 is another explanatory diagram showing a method for replacing the combustion burner. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present invention will be described in detail. To facilitate understanding of the description, the same components in each drawing will be assigned the same reference numerals, and duplicate explanations will be omitted. The scale of each member in the drawings may differ from the actual scale. In this specification, unless otherwise specified, "to" indicating a range of values ​​means that the values ​​before and after it are included as the lower and upper limits.

[0011] <Burner support member> A burner support member according to an embodiment of the present invention will be described. Fig. 1 is a partial perspective view, with a portion cut away, showing a state in which a burner support member according to an embodiment of the present invention is installed on a furnace wall (wall surface) of a glass melting furnace, Fig. 2 is a cross-sectional view showing an example of a state in which a burner support member is installed on a furnace wall of a glass melting furnace, Fig. 3 is a view of the burner support member installed on the furnace wall of a glass melting furnace as seen from the inside (inside the furnace) of the furnace wall of the glass melting furnace, Fig. 4 is a view of the burner support member installed on the furnace wall of a glass melting furnace as seen from the outside (outside the furnace) of the furnace wall of the glass melting furnace, and Fig. 5 is an exploded perspective view showing the configuration of the burner support member.

[0012] As shown in FIG. 1, a burner support member 1 according to this embodiment is provided at an opening 101 a of a furnace wall 101 of a glass melting furnace 100 .

[0013] 2, the glass melting furnace 100 includes a cylindrical burner block 110 at an opening 101a of a furnace wall 101, and a casing 120 provided on the furnace wall 101 and the burner block 110 outside the furnace wall 101 (outside the furnace). The glass melting furnace 100 includes an oxygen combustion burner 130 at the opening 101a of the furnace wall 101 that supplies oxygen and fuel to the inside of the furnace wall 101 (inside the furnace).

[0014] The fuel is a gaseous fuel such as natural gas or a liquid fuel such as heavy oil.

[0015] As shown in Figures 3 and 4, the opening 101a of the furnace wall 101 is formed in a substantially rectangular shape when viewed from the front. The outer shape of the burner block 110 is formed in a substantially rectangular shape when viewed from the front so as to correspond to the shape of the opening 101a. The burner block 110 has an opening 110a formed in a substantially circular shape at its substantially central portion when viewed from the front. Note that the shape of the opening 101a of the furnace wall 101 may be other than a substantially rectangular shape, and the shape of the opening 110a of the burner block 110 may be other than a substantially circular shape.

[0016] The burner block 110 may be formed so as to have an opening 110a in a pair of blocks 111A and 111B. The burner block 110 may be made up of only one block, or may be made up of three or more blocks.

[0017] The casing 120 has a main cylindrical portion 121 that is open at both axial ends and a lid portion 122 that closes the rear opening of the main cylindrical portion 121, and holds an oxygen combustion burner 130 inside the main cylindrical portion 121, penetrating the main cylindrical portion 121 in the axial direction.

[0018] The main cylindrical portion 121 has an opening 123 that opens upward in its furnace wall. The opening 123 may be closed by fixing with a lid portion 124. Note that the method for fixing the lid portion 124 is not particularly limited, and general fixing methods such as adhesives, welding, and bolts may be used. The opening 123 is used as a supply port for supplying secondary air from the outside. Since the glass melting furnace 100 is equipped with an oxygen-fuel combustion burner 130 and there is no need to supply secondary air to the oxygen-fuel combustion burner 130 from the outside, the opening 123 may be closed with the lid portion 124. If the glass melting furnace 100 is equipped with an air-fuel combustion burner (not shown), it is necessary to supply secondary air to the air-fuel combustion burner (not shown). Therefore, the opening 123 is opened and secondary air is supplied from the outside into the main cylindrical portion 121 and then supplied to the air-fuel combustion burner (not shown).

[0019] The main cylindrical portion 121 has flange portions 121a and 121b at its front end (the left end in FIG. 2) and rear end (the right end in FIG. 2), with the furnace wall 101 fixed to the flange portion 121a and the lid portion 122 fixed to the flange portion 121b. The method for fixing the main cylindrical portion 121 is not particularly limited, and general fixing methods such as adhesive, welding, and bolt fixing may be used.

[0020] The lid portion 122 has a through-hole at its axis, through which the oxygen combustion burner 130 passes, and is fixed to the main cylindrical portion 121. The lid portion 122 may be provided with a sight glass, a temperature sensor, etc. (not shown) so that the combustion state can be checked.

[0021] The oxygen combustion burner 130 is provided in a state in which it penetrates the casing 120 and is inserted partway into an opening 110a of the burner block 110. The glass melting furnace 100 may be provided with an air combustion burner (not shown) instead of the oxygen combustion burner 130.

[0022] As shown in FIG. 2, the burner support member 1 is inserted into the opening 110a of the burner block 110 provided in the opening 101a of the furnace wall 101, and has a support portion 10 and a sleeve brick 20 which is a joining member.

[0023] As shown in Fig. 5, the support part 10 has a first support block 11 and a second support block 12. The support part 10 is formed into a substantially cylindrical shape by the first support block 11 and the second support block 12, and has a through hole 10a. The through hole 10a of the support part 10 is preferably formed into a substantially circular shape so that a sleeve brick 20 to which the oxygen combustion burner 130 is fixed can be inserted. Note that the shape of the through hole 10a may be other than a substantially circular shape.

[0024] 2, the first support block 11 is installed with a portion thereof inserted into the opening 110a of the burner block 110. The first support block 11 is formed in a substantially semicircular shape when viewed in the axial direction, and is installed in the opening 110a so as to be concave upward.

[0025] Like the first support block 11, the second support block 12 has a portion inserted into the opening 110a of the burner block 110 and is placed between the first support block 11 and the inner surface of the opening 110a. The second support block 12 is formed in a semicircular shape when viewed in the axial direction, and is placed in the opening 110a so as to be concave downward and face the inner circumferential surface of the first support block 11. The support part 10 has a substantially cylindrical shape due to the combination of the first support block 11 and the second support block 12.

[0026] The outer shapes of the first support block 11 and the second support block 12 when viewed in the axial direction are approximately circular, but are not particularly limited as long as they are formed to correspond to the shape of the opening 110a, and other shapes are also acceptable.

[0027] The support part 10 may have an extension part 13 formed on the underside of one end of the first support block 11 so as to contact the bottom of the opening 101a of the furnace wall 101. Because the first support block 11 and the second support block 12 are inserted into the opening 110a of the burner block 110, a gap is formed between the first support block 11 and the bottom of the opening 101a. Since the extension part 13 supports the underside of the first support block 11, the support part 10 can be stably fixed to the opening 110a of the burner block 110 even when the first support block 11 is installed with only a portion inserted into the opening 110a of the burner block 110.

[0028] Although the support portion 10 does not come into direct contact with the molten glass, it does come into contact with molten glass vapor, high-temperature combustion gases, and the like, and is therefore formed of a refractory material with excellent heat resistance and corrosion resistance. Electrocast refractories and fired refractories, which have excellent heat resistance, corrosion resistance, and compressive strength, are generally used as refractories. Materials used to form the support portion 10 include, for example, general electrocast refractories, fired refractories, and bricks. Examples of electrocast refractories include alumina-silica, alumina, zirconia, alumina-zirconia-silica, magnesia-chromium, chromium-alumina, and alumina-zirconia-silica-chromium. Examples of fired refractories include zircon, alumina-zirconia-silica, and the like. Fired refractories are refractories made by solidifying raw material powder and firing it in a kiln. They are also called sintered refractories or bonded refractories.

[0029] 2, the sleeve brick 20 is installed in a state where it is inserted into the through hole 10a of the support part 10. The sleeve brick 20 has a head part 21 and a shaft part 22, and has a second through hole 20a that passes through the head part 21 and the shaft part 22 in the axial direction. The second through hole 20a is composed of the second through hole 21a of the head part 21 and the second through hole 22a of the shaft part 22.

[0030] The head 21 is a disk-shaped cylindrical member, and is provided on one end face (the right end face in FIG. 2) of the shaft 22, with a second through-hole 21a formed so that the oxygen combustion burner 130 can be inserted therein. The head 21 is formed with a larger diameter than the shaft 22. This allows the sleeve brick 20 to be easily inserted and removed from the through-hole 10a, and also allows the inserted oxygen combustion burner 130 to be fixed in place.

[0031] The head 21 is formed to have a substantially circular shape in a plan view. The shape of the head 21 in a plan view is not particularly limited, and may be a polygon such as a substantially triangular, substantially rectangular, or substantially hexagonal shape.

[0032] The shaft portion 22 extends from the head portion 21 so as to be approximately perpendicular to the rear surface of the head portion 21, and contacts the through-hole 10a of the support portion 10. The shaft portion 22 is formed in a substantially cylindrical shape.

[0033] The shaft portion 22 has a second through-hole 22a formed therein, into which the oxygen combustion burner 130 can be inserted. The second through-hole 22a may have a step along the way. This allows the oxygen combustion burner 130 to be inserted into a predetermined position without passing through the second through-hole 22a. The second through-hole 22a may have multiple steps and be formed in a stepped pattern from the head portion 21 side toward the tip side of the shaft portion 22 (left side in FIG. 2), or may be formed so that its diameter decreases from the head portion 21 side toward the tip side of the shaft portion 22 (left side in FIG. 2).

[0034] The head 21 and the shaft 22 may be integrally formed, or may be joined by welding, adhesive, or the like.

[0035] The sleeve bricks 20 are made of a refractory material with excellent heat resistance and corrosion resistance, since they do not come into direct contact with the molten glass but do come into contact with the vapors of the molten glass and high-temperature combustion gases. Electrocast refractories and fired refractories, which have excellent heat resistance, corrosion resistance, and compressive strength, are generally used as refractories. Examples of materials used to form the sleeve bricks 20 include general electrocast refractories, fired refractories, and bricks. Examples of electrocast refractories include alumina-silica, alumina, zirconia, alumina-zirconia-silica, magnesia-chromium, chromium-alumina, and alumina-zirconia-silica-chromium. Examples of fired refractories include zircon, alumina-zirconia-silica, and the like. Fired refractories are refractories made by solidifying raw material powder and firing it in a kiln. They are also called sintered refractories or bonded refractories.

[0036] The support part 10 holds a part of the tip of the oxygen combustion burner 130 inserted into the through-hole 10a via the sleeve brick 20. The support part 10 may directly hold a part of the tip of the oxygen combustion burner 130 in the through-hole 10a, or the support part 10 may be removed as shown in FIG. 6 when using the air combustion burner 140 (see FIG. 6).

[0037] A description will be given of a method for replacing a combustion burner using the burner support member 1 according to this embodiment. In this embodiment, a case will be described in which an air-fuel combustion burner 140 installed at an opening 101a of a furnace wall 101 of a glass melting furnace 100 is replaced with an oxygen-fuel combustion burner 130.

[0038] As shown in FIG. 6, an air-fired burner 140 is installed at an opening 101a in a furnace wall 101 of a glass melting furnace 100, and the lid 124 is removed to open the opening 123, so that secondary air can be supplied from the outside into the main cylindrical portion 121 and supplied to the air-fired burner 140.

[0039] First, the air-fired burner 140 installed on the furnace wall 101 of the glass melting furnace 100 is removed to the outside of the glass melting furnace 100 (removal step of the air-fired burner).

[0040] Next, as shown in FIG. 7, the lid portion 122 is removed from the main cylindrical portion 121, and the first support block 11 of the support portion 10 is inserted from the outside of the glass melting furnace 100 and placed on top of the block 111A of the burner block 110 (first support block installation process).

[0041] Next, as shown in FIG. 8, the second support block 12 is inserted from the outside of the glass melting furnace 100 and placed on the first support block 11 (a step of placing the second support block).

[0042] Next, as shown in FIG. 9, the sleeve brick 20 is inserted from the outside of the glass melting furnace 100 and placed on the inner peripheral surfaces of the first support block 11 and the second support block (a step of placing the joining member).

[0043] As a result, the support portion 10 is provided in a state where it is inserted into the opening 110a of the burner block 110 installed in the opening 101a of the furnace wall 101.

[0044] 10, the removed lid portion 122 is then reinstalled on the main cylindrical portion 121, and the oxygen combustion burner 130 is inserted into the second through-hole 20a of the sleeve brick 20 up to the stepped portion of the second through-hole 22a in the shaft portion 22 (oxygen combustion burner installation step). Note that the member supporting the oxygen combustion burner 130 is not limited to the lid portion 122, and may be another member capable of supporting the oxygen combustion burner 130.

[0045] Furthermore, when the inside of the furnace is not heated, the first support block 11, the second support block 12, and the sleeve brick 20 may be inserted from the inside of the glass melting furnace 100. In this case, the lid portion 122 may or may not be removed from the main cylindrical portion 121.

[0046] The combustion burner replacement method according to this embodiment uses the burner support member 1 according to this embodiment, so by inserting the oxygen-fuel combustion burner 130 into the opening 101a of the furnace wall 101 while maintaining the equipment for the air-fuel combustion burner 140, the position of the oxygen-fuel combustion burner 130 can be adjusted to approximately the same position as when the air-fuel combustion burner 140 was installed. Therefore, the oxygen-fuel combustion burner replacement method according to this embodiment allows replacement with the oxygen-fuel combustion burner 130 without changing the position of the equipment for the air-fuel combustion burner 140.

[0047] In the combustion burner replacement method according to this embodiment, the case where the air-fuel combustion burner 140 is replaced with the oxygen-fuel combustion burner 130 has been described. However, the combustion burner replacement method according to this embodiment can also be used when replacing the oxygen-fuel combustion burner 130 with the air-fuel combustion burner 140. In this case, the steps shown in FIGS. 6 to 10 are performed in reverse order. That is, in the combustion burner replacement method according to this embodiment, the oxygen-fuel combustion burner 130 installed in the furnace wall 101 of the glass melting furnace 100 is extracted and removed to the outside of the glass melting furnace 100 (oxygen-fuel combustion burner removal step). Next, the lid portion 122 is removed from the main cylindrical portion 121, and the sleeve brick 20 is removed to the outside of the furnace wall 101 and the casing 120 of the glass melting furnace 100 (joint member removal step). Next, the second support block 12 is removed to the outside of the glass melting furnace 100 (second support block removal step), and the first support block 11 is removed to the outside of the glass melting furnace 100 (first support block removal step). Next, the removed lid portion 122 is reinstalled on the main cylindrical portion 121, and with the burner block 110 still installed in the opening 101a of the furnace wall 101, the air-fired burner 140 is inserted into the casing 120, and the air-fired burner 140 is inserted into the opening 101a so that the tip of the air-fired burner 140 is positioned within the opening 101a of the furnace wall 101 (air-fired burner installation step).

[0048] The glass melting method according to this embodiment uses a glass melting furnace 100 equipped with the burner support member 1 according to this embodiment, and produces molten glass by heating glass raw materials supplied into the glass melting furnace 100 with an oxygen combustion burner 130 provided on a furnace wall 101 of the glass melting furnace 100. Since the glass melting method according to this embodiment uses the oxygen combustion burner 130 as the burner provided on the furnace wall 101, molten glass of the same quality as that obtained with an air combustion burner 140 can be obtained.

[0049] The glass manufacturing method according to this embodiment uses a glass melting furnace 100 equipped with the burner support member 1 according to this embodiment, and includes a melting process in which glass raw materials in the glass melting furnace 100 are heated and melted by oxygen-fuel burners 130 provided on the furnace wall 101 of the glass melting furnace 100 to obtain molten glass, a fining process in which gas bubbles are removed from the molten glass to refine the molten glass, and a shaping process in which the refined molten glass is formed into a predetermined shape. Of these processes, the melting process uses the glass melting method described above, and glass raw materials supplied to the melting tank of the glass melting furnace 100 are melted using oxygen-fuel burners 130 provided on the furnace wall 101, so that molten glass of the same quality as that obtained using air-fuel burners 140 can be obtained.

[0050] The molten glass obtained in the melting process is removed from the melting tank and sent to the fining process. In the fining process, the molten glass obtained in the melting process is supplied to a fining tank, and bubbles in the molten glass are caused to float up and be removed. Methods for promoting the floating of bubbles include, for example, reducing the pressure in the fining tank to degas the glass.

[0051] The forming step is a step of forming the refined molten glass into a plate having a predetermined thickness. Examples of methods for forming the glass into a plate include the common float method and fusion method.

[0052] As described above, the burner support member 1 according to this embodiment includes a support part 10 at the opening 101a provided in the furnace wall 101 of the glass melting furnace 100. The support part 10 has a first support block 11, a second support block 12, and a through hole 10a, and supports the oxygen-fuel combustion burner 130 inserted in the through hole 10a. By providing the support part 10 at the opening 101a of the furnace wall 101, the oxygen-fuel combustion burner 130 can be held in the through hole 10a. Therefore, the oxygen-fuel combustion burner 130 can be installed at the opening 101a of the furnace wall 101 without replacing the equipment used for the air-fuel combustion burner 140, such as the burner block 110 provided at the opening 101a of the furnace wall 101 and the casing 120 attached to the furnace wall 101, so that the axis of the oxygen-fuel combustion burner 130 is approximately aligned with the axis of the air-fuel combustion burner 140. Therefore, when replacing the air-fuel combustion burner 140 with the oxygen-fuel combustion burner 130, the burner support member 1 can be installed without changing the position of the equipment for the air-fuel combustion burner 140, while preventing the oxygen-fuel combustion burner 130 from being misaligned with the installation position of the air-fuel combustion burner 140.

[0053] Furthermore, when replacing the air-combustion burner 140 with the oxygen-combustion burner 130, if all of the equipment used for the air-combustion burner 140, such as the burner block 110 provided at the opening 101a of the furnace wall 101 and the casing 120 attached to the furnace wall 101, is replaced, the load required for the replacement work is large. Similarly, when replacing the oxygen-combustion burner 130 with the air-combustion burner 140 again, if all of the equipment used for the air-combustion burner 140 must be reinstalled, the load required for the replacement work is also large. In this embodiment, the burner support member 1 can replace the air-combustion burner 140 with the oxygen-combustion burner 130 while maintaining the equipment used for the air-combustion burner 140, thereby reducing the load required for the combustion burner replacement work.

[0054] Furthermore, the position of the burner support member 1 in the axial view of the through hole 10a can be made to be approximately the same as the axis of the air-combustion burner 140 when the air-combustion burner 140 is installed. Therefore, the support part 10 can hold the oxy-fuel burner 130 in the through hole 10a at approximately the same position as the air-combustion burner 140 when the air-combustion burner 140 is installed. The burner support member 1 can supply oxygen and fuel from the oxy-fuel burner 130 into the furnace from approximately the same position in the through hole 10a as the position from which the air-combustion burner 140 supplies air and fuel. If the air-combustion burner 140 and the oxy-fuel burner 130 are provided at different positions on the furnace wall, the degree of heating of the glass will vary between when the air-combustion burner 140 and the oxy-fuel burner 130 are used, which may result in changes in the quality of the glass produced. In this embodiment, the burner support member 1 can supply oxygen and fuel from the oxygen combustion burner 130 into the furnace from the support part 10 at approximately the same position as the position where air and fuel are supplied from the air combustion burner 140, so that glass of the same quality as that produced when the air combustion burner 140 is used can be produced.

[0055] The burner support member 1 has a burner block 110 in the opening 101a, and the support part 10 is installed on the burner block 110. As a result, even if the burner block 110 remains in the opening 101a, the burner support member 1 makes it possible to easily replace the air-fired burner 140 with the oxygen-fired burner 130 so that the axis of the oxygen-fired burner 130 is positioned approximately the same as the axis of the air-fired burner 140 without changing the position of the equipment for the air-fired burner 140.

[0056] The burner support member 1 has an extension portion 13 on the underside of the first support block 11. As a result, the burner support member 1 can support the underside of the first support block 11 with the extension portion 13, so even if the first support block 11 is installed in a state where part of it protrudes into the opening 110a of the burner block 110, the first support block 11 can be stably installed in the opening 110a of the burner block 110. Furthermore, because displacement of the first support block 11 is suppressed, when the oxy-fuel burner 130 is installed on the first support block 11, the oxy-fuel burner 130 can be stably installed. Therefore, the burner support member 1 can be easily replaced with the oxy-fuel burner 130.

[0057] The burner support member 1 has a sleeve brick 20 that is provided so that a portion of it can be inserted into the through-hole 10a. This allows the burner support member 1 to easily fix the position of the oxygen-fuel combustion burner 130 by inserting it into the second through-hole 22a of the sleeve brick 20, making it easy and stable to insert the oxygen-fuel combustion burner 130 and fix its position.

[0058] The burner support member 1 has a head portion 21 on the sleeve brick 20. This allows the burner support member 1 to easily fix the oxygen combustion burner 130 to the support portion 10.

[0059] The burner support member 1 can be formed so that the second through holes 30a of the sleeve bricks 20 become smaller in size in stages from the outside to the inside of the furnace wall 101. This allows the burner support member 1 to easily and stably insert the oxygen combustion burners 130 and fix their positions.

[0060] Although the embodiments have been described above, they are presented as examples and the present invention is not limited to the above embodiments. The above embodiments can be implemented in various other forms, and various combinations, omissions, substitutions, modifications, etc. can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as set forth in the claims. [Explanation of symbols]

[0061] 1 Burner support member 10 Support part 10a through hole 11 First Support Block 12 Second Support Block 13 Extension section 20 Sleeve brick (jointing member) 20a 2nd through hole 21 Head 22 Shaft 100 Glass melting furnace 101 Furnace wall 101a, 110a opening 110 Burner Block 130 Oxygen combustion burner 140 Air-fired burner

Claims

1. a support portion provided at an opening in a furnace wall of the glass melting furnace and supporting the oxygen combustion burner; a joining member having a cylindrical shape; Equipped with The support portion is a first support block disposed at the bottom of the opening; a second support block disposed between the first support block and the inner surface of the opening; a through hole penetrating from the inside to the outside of the furnace wall between the first support block and the second support block; the joining member has a second through hole that is provided so as to be partially insertable into the through hole and is large enough to allow the oxygen combustion burner to be inserted therein; The oxygen combustion burner is a burner support member fixed to the joining member.

2. The burner support member according to claim 1 , further comprising a burner block in which the support portion is disposed in the opening.

3. 3. The burner support member according to claim 2, wherein the first support block has an extension on a lower surface thereof that contacts the burner block.

4. 4. The burner support member according to claim 1, wherein the joining member has a head portion that contacts one end surface of the first support block and one end surface of the second support block.

5. The burner support member according to any one of claims 1 to 4, wherein the second through hole is formed so as to become smaller in size in stages from the outside to the inside of the furnace wall, or the diameter of the second through hole is reduced from the outside to the inside of the furnace wall.

6. A burner support member according to any one of claims 1 to 5; Burner and A glass melting furnace comprising:

7. 7. The glass melting furnace according to claim 6, further comprising a casing provided on the furnace wall and holding the burner in a state in which the casing penetrates the burner in the axial direction.

8. Remove the air combustion burner installed in the opening of the furnace wall of the glass melting furnace, The burner support member according to any one of claims 1 to 5 is installed in the opening, The burner support member supports an oxygen combustion burner inserted into the opening. How to replace a combustion burner.

9. A glass melting method using the glass melting furnace according to claim 6 or 7, wherein glass raw materials are heated by the burner to form molten glass.

10. Using the glass melting furnace according to claim 6 or 7, The glass raw material is heated by the oxygen combustion burner to form molten glass, The obtained molten glass is formed into a plate shape. Glass manufacturing methods.

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