JP7786256B2 - Burner support member, glass melting furnace, combustion burner replacement method, glass melting method, and glass manufacturing method - Google Patents

Description

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.

Air-fired burners are installed on the furnace walls of glass melting furnaces, which burn a mixture of air and gaseous fuel such as natural gas or liquid fuel such as heavy oil. The heat from the air-fired burners raises the temperature inside the glass melting furnace (hereinafter also referred to as the furnace interior) from room temperature to a temperature capable of melting the glass raw materials, thereby melting the glass raw materials supplied into the furnace.

As an air-fired burner, for example, a gas burner has been disclosed that is located on the outside of the furnace wall of a glass melting furnace and 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.By changing the size of the space formed at the tip of the burner body, a premixing space for mixing the combustion gas and primary air is formed, and the combustion of the mixed gas is maintained (see, for example, Patent Document 1).

JP 2010-112652 A

However, when replacing an air-fuel combustion burner such as the gas burner of Patent Document 1 with an oxygen-fuel combustion burner for the purpose of reducing _CO2 emissions, etc., there is a problem in that the burden of the switching work is large when the equipment for the air-fuel combustion burner is removed and new equipment for the oxygen-fuel combustion burner is installed. In addition, there is a problem in that if the installation position of the oxygen-fuel combustion burner is shifted from the installation position of the air-fuel combustion burner, the quality of the produced glass is likely to change.

One aspect of the present invention aims to provide a burner support member that allows the oxygen-fuel combustion burner to be installed without changing the position of the air-fuel combustion burner equipment when replacing an air-fuel combustion burner with an oxygen-fuel combustion burner, while minimizing misalignment with the installation position of the air-fuel combustion burner, and that reduces the burden of the oxygen-fuel combustion burner replacement work.

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 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 oxygen combustion burner is supported within the through hole.

One aspect of the burner support member according to the present invention allows for the installation of an oxygen-fuel combustion burner without changing the position of the air-fuel combustion burner equipment when replacing an air-fuel combustion burner with an oxygen-fuel combustion burner, minimizing misalignment with the installation position of the air-fuel combustion burner, and also reduces the burden of the oxygen-fuel combustion burner replacement work.

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. 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. 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. 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. FIG. 2 is an exploded perspective view showing the configuration of a burner support member. FIG. 4 is an explanatory diagram showing a method for replacing a combustion burner. FIG. 10 is another explanatory diagram showing a method for replacing the combustion burner. FIG. 10 is another explanatory diagram showing a method for replacing the combustion burner. FIG. 10 is another explanatory diagram showing a method for replacing the combustion burner. FIG. 10 is another explanatory diagram showing a method for replacing the combustion burner.

Embodiments of the present invention will be described in detail below. To facilitate understanding, identical components in each drawing will be assigned the same reference numerals, and duplicate explanations will be omitted. The scale of each component 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.

<Burner support member>
[0013] A burner support member according to an embodiment of the present invention will be described. Fig. 1 is a partial perspective view, partially 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 the 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. Fig. 5 is an exploded perspective view showing the configuration of the burner support member.

As shown in Figure 1, the burner support member 1 of this embodiment is installed in the opening 101a of the furnace wall 101 of the glass melting furnace 100.

As shown in Figure 2, the glass melting furnace 100 includes a cylindrical burner block 110 at the opening 101a of the furnace wall 101, and a casing 120 attached to the furnace wall 101 and burner block 110 on the outside of 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).

The fuel may be a gaseous fuel such as natural gas or a liquid fuel such as heavy oil.

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 to correspond to the shape of the opening 101a. The burner block 110 has an opening 110a formed in a substantially circular shape in its approximate center when viewed from the front. Note that the shape of the opening 101a of the furnace wall 101 may be other than substantially rectangular, and the shape of the opening 110a of the burner block 110 may be other than substantially circular.

The burner block 110 may be formed with a pair of blocks 111A and 111B, each having an opening 110a. The burner block 110 may consist of only one block, or three or more blocks.

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. The oxyfuel burner 130 is held inside the main cylindrical portion 121, penetrating it in the axial direction.

The main cylindrical portion 121 has an opening 123 that opens upward in its furnace wall. The opening 123 may be closed by being fixed with a lid portion 124. 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. The glass melting furnace 100 is equipped with an oxygen-fuel combustion burner 130, and since 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), secondary air must be supplied 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 to the air-fuel combustion burner (not shown).

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

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 also be equipped with a sight glass and temperature sensor (not shown) to allow the combustion state to be confirmed.

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

As shown in Figure 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 serves as a connecting member.

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

As shown in Figure 2, the first support block 11 is installed with a portion of it inserted into the opening 110a of the burner block 110. The first support block 11 is formed in a roughly semicircular shape when viewed in the axial direction, and is installed in the opening 110a so that it is concave upward.

Like the first support block 11, a portion of the second support block 12 is inserted into the opening 110a of the burner block 110, and is installed between the first support block 11 and the inner surface of the opening 101a. The second support block 12 is formed in a semicircular shape when viewed in the axial direction, and is installed in the opening 110a so that it is concave downward and faces the inner surface of the first support block 11. The support part 10 has a roughly cylindrical shape due to the combination of the first support block 11 and the second support block 12.

The external shapes of the first support block 11 and the second support block 12 when viewed in the axial direction are generally 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.

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. Because 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 only a portion of the first support block 11 is installed inserted into the opening 110a of the burner block 110.

Although the support portion 10 does not come into direct contact with the molten glass, it does come into contact with molten glass vapor and high-temperature combustion gases, 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-chrome, chrome-alumina, and alumina-zirconia-silica-chrome. Examples of fired refractories include zircon and alumina-zirconia-silica. 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.

As shown in Figure 2, the sleeve brick 20 is installed in the through hole 10a of the support part 10. The sleeve brick 20 has a head part 21 and a shaft part 22, and 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.

The head 21 is a disk-shaped cylindrical member that is provided on one end face of the shaft 22 (the right end face in Figure 2) and has a second through-hole 21a formed so that the oxygen combustion burner 130 can be inserted. 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.

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

The shaft 22 extends from the head 21 at a substantially right angle to the back surface of the head 21 and contacts the through-hole 10a of the support part 10. The shaft 22 is formed in a substantially cylindrical shape.

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 its length. 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 may be formed in a stepped pattern from the head portion 21 toward the tip of the shaft portion 22 (left side in Figure 2), or may be formed so that its diameter decreases from the head portion 21 toward the tip of the shaft portion 22 (left side in Figure 2).

The head 21 and shaft 22 may be formed integrally, or may be joined by welding, adhesive, etc.

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 molten glass vapor 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 make 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-chrome, chrome-alumina, and alumina-zirconia-silica-chrome. Examples of fired refractories include zircon and alumina-zirconia-silica. 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.

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

This embodiment describes a method for replacing a combustion burner using the burner support member 1. In this embodiment, we will explain the case where an air-fuel combustion burner 140 installed in the opening 101a of the furnace wall 101 of a glass melting furnace 100 is replaced with an oxygen-fuel combustion burner 130.

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

First, the air-fuel combustion 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 (air-fuel combustion burner removal process).

Next, as shown in Figure 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 block 111A of the burner block 110 (first support block installation process).

Next, as shown in Figure 8, the second support block 12 is inserted from the outside of the glass melting furnace 100 and placed on top of the first support block 11 (second support block installation process).

Next, as shown in Figure 9, the sleeve brick 20 is inserted from the outside of the glass melting furnace 100 and installed on the inner surfaces of the first support block 11 and the second support block (joint member installation process).

This allows the support part 10 to be inserted into the opening 110a of the burner block 110 installed within the opening 101a of the furnace wall 101.

Next, as shown in Figure 10, the removed lid portion 122 is 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 process). 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.

Also, when the interior 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.

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 oxygen-fuel combustion burner 130 can be positioned in 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.

While the combustion burner replacement method according to this embodiment has been described in connection with the replacement of an air-fuel combustion burner 140 with an oxygen-fuel combustion burner 130, the combustion burner replacement method according to this embodiment can also be used when replacing an oxygen-fuel combustion burner 130 with an air-fuel combustion burner 140. In this case, the steps shown in Figures 6 to 10 are performed in reverse order. That is, the combustion burner replacement method according to this embodiment involves extracting and removing the oxygen-fuel combustion burner 130 installed in the furnace wall 101 of the glass melting furnace 100 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 casing 120 of the glass melting furnace 100 (joint member removal step). Next, the second support block 12 is removed outside the glass melting furnace 100 (second support block removal process), and the first support block 11 is removed outside the glass melting furnace 100 (first support block removal process). 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 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 process).

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 heats glass raw materials supplied into the glass melting furnace 100 with an oxygen-fuel combustion burner 130 provided on the furnace wall 101 of the glass melting furnace 100 to produce molten glass. Because the glass melting method according to this embodiment uses an oxygen-fuel combustion burner 130 as the burner provided on the furnace wall 101, molten glass of the same quality as that obtained with an air-fuel combustion burner 140 can be obtained.

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. It includes a melting process in which glass raw materials in the glass melting furnace 100 are heated and melted using 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 fed using oxygen-fuel burners 130 provided on the furnace wall 101, thereby obtaining molten glass of the same quality as with air-fuel burners 140.

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, where air bubbles in the molten glass are caused to float up and be removed. One method for promoting the floating of air bubbles is to reduce the pressure inside the fining tank to degas it.

The forming process is a process in which the refined molten glass is formed into a plate of a specified thickness. Methods for forming into a plate include, for example, the common float method and fusion method.

As such, the burner support member 1 according to this embodiment includes a support portion 10 in an opening 101a provided in the furnace wall 101 of the glass melting furnace 100. The support portion 10 has a first support block 11, a second support block 12, and a through hole 10a, and supports an oxygen-fuel combustion burner 130 inserted in the through hole 10a. By providing the support portion 10 in the opening 101a of the furnace wall 101, the oxygen-fuel combustion burner 130 can be held within the through hole 10a. Therefore, the equipment used for the air-fuel combustion burner 140, such as the burner block 110 provided in the opening 101a of the furnace wall 101 and the casing 120 attached to the furnace wall 101, does not need to be replaced; instead, the oxygen-fuel combustion burner 130 can be installed in the opening 101a of the furnace wall 101 in its original state, with the axis of the oxygen-fuel combustion burner 130 positioned approximately in the same position as the axis of the air-fuel combustion burner 140. Therefore, when replacing an air-fuel combustion burner 140 with an 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 minimizing misalignment between the oxygen-fuel combustion burner 130 and the installation position of the air-fuel combustion burner 140.

Furthermore, when replacing an air-fuel combustion burner 140 with an oxygen-fuel combustion burner 130, if all of the equipment used for the air-fuel combustion burner 140, such as the burner block 110 installed at the opening 101a of the furnace wall 101 and the casing 120 attached to the furnace wall 101, is replaced, the workload required for the replacement is significant. Similarly, if all of the equipment used for the air-fuel combustion burner 140 must be reinstalled when replacing the oxygen-fuel combustion burner 130 with an air-fuel combustion burner 140, the workload required for the replacement is also significant. In this embodiment, the burner support member 1 allows the air-fuel combustion burner 140 to be replaced with the oxygen-fuel combustion burner 130 while maintaining the equipment used for the air-fuel combustion burner 140, thereby reducing the workload required for the combustion burner replacement work.

Furthermore, the burner support member 1 can be positioned such that the position of the through hole 10a in the axial direction is approximately the same as the axis of the air-fired burner 140 when the air-fired burner 140 is installed. Therefore, the support part 10 can hold the oxygen-fueled burner 130 in approximately the same position within the through hole 10a as the air-fired burner 140 when the air-fired burner 140 is installed. The burner support member 1 can supply oxygen and fuel from the oxygen-fueled burner 130 into the furnace from approximately the same position within the through hole 10a as the air-fired burner 140 supplies air and fuel. If the air-fired burner 140 and the oxygen-fueled burner 130 are installed at different positions on the furnace wall, the degree of glass heating will vary between when the air-fired burner 140 and the oxygen-fueled burner 130 are used, which may result in changes in the quality of the glass produced. In this embodiment, the burner support member 1 allows oxygen and fuel from the oxygen combustion burner 130 to be supplied into the furnace from the support part 10 at approximately the same position as where air and fuel are supplied from the air combustion burner 140, making it possible to produce glass of the same quality as when the air combustion burner 140 is used.

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 allows the air-fired burner 140 to be easily replaced with the oxygen-fired burner 130 without changing the position of the equipment for the air-fired burner 140, so that the axis of the oxygen-fired burner 130 is positioned approximately in the same position as the axis of the air-fired burner 140.

The burner support member 1 has an extension portion 13 on the underside of the first support block 11. This allows the burner support member 1 to support the underside of the first support block 11 with the extension portion 13, so even if the first support block 11 is installed with a portion of it protruding 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 misalignment of the first support block 11 is suppressed, when installing the oxygen-fuel combustion burner 130 on the first support block 11, the oxygen-fuel combustion burner 130 can be installed stably. Therefore, the burner support member 1 can be easily replaced with an oxygen-fuel combustion burner 130.

The burner support member 1 has a sleeve brick 20 that can be partially inserted into the through-hole 10a. This allows the oxygen-fuel combustion burner 130 to be inserted into the second through-hole 22a of the sleeve brick 20 and easily fixed in position, making it easy and stable to insert and fix the oxygen-fuel combustion burner 130 in position.

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

The burner support member 1 can be formed so that the second through-holes 30a of the sleeve bricks 20 become gradually smaller from the outside to the inside of the furnace wall 101. This allows the burner support member 1 to easily and stably insert and fix the position of the oxygen combustion burner 130.

Although the embodiments have been described above, they are presented as examples and do not limit the present invention. The embodiments can be implemented in a variety of other forms, and various combinations, omissions, substitutions, modifications, etc. are possible without departing from the spirit of the invention. These embodiments and their variations are included within the scope and spirit of the invention, as well as within the scope of the inventions and their equivalents as set forth in the claims.

REFERENCE SIGNS LIST 1 burner support member 10 support portion 10a through hole 11 first support block 12 second support block 13 extension portion 20 sleeve brick (joint member)
20a Second 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 combustion burner

Claims (10)

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 . The burner support member according to claim 1, further comprising a burner block in which the support portion is installed in the opening. A burner support member as described in claim 2, wherein the underside of the first support block has an extension portion that contacts the burner block. 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. 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. A burner support member according to any one of claims 1 to 5 ;
Burner and
A glass melting furnace comprising: 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. Remove the air combustion burner installed in the opening of the furnace wall of the glass melting furnace,
a burner support member according to any one of claims 1 to 5 installed in the opening;
The burner support member supports an oxygen combustion burner inserted into the opening.
How to replace a combustion burner. 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. 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.