KR20020053638A - Glass furnace - Google Patents

Abstract

PURPOSE: Provided is a glass furnace to control burning air supplied to combustion air ports properly and compensate temperature according to position inside melter for good quality of glass melt. CONSTITUTION: The glass furnace composed of a glass material melter(10), a pair of regenerative heat chambers, a number of combustion air ports and burners(25a). The regenerative heat chambers located on both sides of the melter supplies burning air or discharges waste gas generated in the melter. The combustion air ports(24a) located between the melter and a pair of regenerative heat chambers guides combustion air. The burners in each combustion air ports give flames inside melter. The furnace is characterized by damper(27) and damper drivers controlling aperture of combustion air ports. The damper enables to manage temperature at each site by controlling air flow.

Description

Glass Melting Furnace {GLASS FURNACE}

The present invention relates to a glass melting furnace, and more particularly, to a glass melting furnace having a plurality of combustion air ports disposed between a melter and a pair of heat storage chambers to form a flow path of combustion air.

In general, the glass melting furnace is a melter for supplying a solid glass raw material to be heated and melted, a refiner which removes air bubbles in the molten glass to make a high quality glass, and a glass state suitable for molding operation conditions is arranged in communication with the refiner. It has a glass supply unit which heats, cools, and stirs the glass to provide the compression molding apparatus. A pair of heat storage chambers are provided on both sides of the melter along the longitudinal direction of the melter to supply combustion air into the melter or discharge waste gas generated in the melter, and a plurality of spraying flames into the melter between the pair of heat storage chambers and the melter. A duct-shaped combustion air port for arranging the heating burner is provided. In general, a plurality of combustion air ports are arranged on both sides of the melter, and burners are arranged one by one in the combustion air port.

By such a configuration, a brief description will be given of a process in which the flame is injected into the melter assuming that the burners arranged on the left side of the burners arranged in the left and right sides of the melter are operated first.

First, when the left burners are UP and disposed in the left combustion air ports, the burners on the left side inject the flame into the melter by using the fuel and the primary combustion air supplied to the nozzle provided in the burner itself. At this time, the secondary burner air is provided to the burners on the left side to make the combustion atmosphere of the flame injected from the burner.

Secondary combustion air is supplied from a heat storage chamber disposed on the left side of the melter, and this combustion air is dividedly supplied into respective left combustion air ports provided between the heat storage chamber and the melter on the left side, and finally to the left combustion air ports. By supplying the arranged burners, the burners on the left side can spray a predetermined flame into the melter. At this time, the burners on the right side are in a down state, and waste gas generated in the melter by the flames of the burners on the left side is stored in the right heat storage chamber through the right combustion air ports provided between the heat storage chamber on the right side and the melter. It is discharged to the outside via.

When a predetermined time elapses, the burners on the left side are down again and the burners on the right side are up, and the flame is injected into the melter. In this case, the heat storage chamber on the left side forms a discharge path of the waste gas. On the contrary, the heat storage chamber on the right side constitutes the supply path of the secondary combustion air. As such, the solid glass raw material supplied into the melter is formed into the molten glass of the liquid phase by the respective burners disposed on the left and right sides of the melter.

On the other hand, since the melter is a place to form a solid glass raw material in the liquid phase, the flame formed through each combustion air port is to inject the flame with a different amount of fuel for proper temperature management of each part of the melter. As such, each of the burners disposed on both sides of the melter has a different intensity of flame sprayed according to its position, and therefore, the amount of secondary combustion air provided to each combustion air port is also different to each combustion air port. Must be distributed.

By the way, in the conventional glass melting furnace, since the primary combustion air is supplied through the nozzle provided in the burner itself, it is possible to appropriately control the amount of primary combustion air in each burner itself, but the secondary combustion air provided through the heat storage chamber. Is merely to be distributed to each combustion air port at the top of the heat storage chamber, and there is no separate means for properly distributing secondary combustion air provided to each combustion air port.

Conventional glass melting furnaces due to this cause, because it is difficult to properly distribute the secondary air according to the different fuel consumption for each burner, it is difficult to control the flame state injected through each combustion air port melter It is difficult to maintain the temperature control of each location of the, as a result there is a problem that can not obtain a good quality molten glass.

Accordingly, it is an object of the present invention to provide a glass melting furnace which enables to properly control the combustion air provided to the combustion air port.

1 and 2 are schematic plan and side views of a glass melting furnace according to the present invention;

Figure 3 is a schematic enlarged view of the main part of Figure 1 according to the installation position of the damper according to the present invention,

4 is a control block diagram of a damper according to the present invention.

* Explanation of symbols for the main parts of the drawings

10: melter 12: refiner

21a, 21b: Regenerative chamber 24a, 24b: Combustion air port

27: damper 29: damper driving unit

30: control unit

The object is, according to the present invention, a melter for melting a glass raw material, a pair of heat storage chambers disposed on both sides of the melter to supply combustion air into the melter or to discharge waste gas generated in the melter, and the melter And a plurality of combustion air ports disposed between the pair of heat storage chambers to form a flow path of combustion air, and a plurality of burners disposed in each of the combustion air ports to inject flame into the melter, A damper provided in the combustion air port to adjust an opening degree of the combustion air port; It is achieved by a glass melting furnace comprising a damper driver for driving the damper.

Here, each said combustion air port is arrange | positioned in the long channel shape between the said melter and the said heat storage chamber by the refractory wall. The damper may be inserted into a through hole formed in the refractory wall so that one end is disposed in the combustion air port and the other end is exposed to the outside of the combustion air port.

In this case, the damper may be composed of a pair of refractory bricks disposed transversely in the traveling direction of the combustion air on the refractory walls facing each other.

In addition, the damper driver, which may have various embodiments, may be configured as an actuator coupled to an end portion of the damper exposed to the outside to drive the damper horizontally in a traveling direction of the combustion air.

The controller may further include a controller configured to operate the damper driver based on the intensity of the flame sprayed from the burner.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 are schematic plan and side views of a glass melting furnace according to the present invention. As shown in these drawings, the glass melting furnace receives a solid glass raw material from the raw material supply unit 12 and heats it to about 1500 ° C to 1600 ° C to melt the melter 10 into a liquid molten glass material, and a molten glass material. The molten glass material is removed by cooling the molten glass material at a predetermined temperature between the refiner 14 and the melter 10 and the refiner 14 to remove impurities in the melt to form a high quality molten glass material. A glass supply unit which is arranged in communication with the bottleneck connecting portion 16 and the refiner 14 to homogenize and heats, cools, and stirs the molten glass material to a glass state suitable for molding operation conditions and provides the compression molding apparatus 20 ( 18).

On both sides along the longitudinal direction of the melter 10, the secondary combustion air is supplied to each of the burners 25a and 25b at the time of ignition of the burners 25a and 25b to be described later, or the waste gas generated in the melter 10 A pair of heat storage chambers 21a and 21b forming a discharge path are provided. The heat storage chambers 21a and 21b are composed of vertical years 23a and 23b vertically arranged in the vertical direction and horizontal years 22a and 22b connected at right angles to the ends of the vertical years 23a and 23b. A combustion air supply unit (not shown) for supplying secondary combustion air is provided in an adjacent region of the horizontal flue 22a, 22b. Here, the side walls of the melter 10 and the heat storage chambers 21a and 21b are mainly formed of a firebrick having excellent heat resistance and durability.

A plurality of duct-shaped combustion air ports 24a and 24b are provided between the heat storage chambers 21a and 21b and the melter 10, and the melter 10 is provided in each combustion air port 24a and 24b. One burner 25a, 25b for injecting a flame is disposed. Here, each of the burners 25a and 25b disposed in each of the combustion air ports 24a and 24b includes a combustion air injection nozzle (not shown) and a fuel injection nozzle (not shown) to which primary combustion air is supplied. Each is attached. The combustion air ports 24a and 24b are introduced into the combustion air ports 24a and 22b through the horizontal flue 22a and 22b and the vertical flue 23a and 23b which supply the secondary combustion air to the respective burners 25a and 25b. At this time, each combustion air port (24a, 24b) is a secondary combustion provided to each combustion air port (24a, 24b) because the volume according to the position is formed differently for temperature management for each position in the melter 10 Air must be provided differently for each combustion air port 24a, 24b.

Hereinafter, for convenience of description, the modifier "left" is used for the heat storage chamber 21a, the combustion air port 24a, and the burners 25a on the left side of the drawing, and the heat storage chamber 21b on the right side of the drawing, The combustion air port 24b and the burners 25b use the modifier "right" and distinguish reference numerals.

On the other hand, as shown in Fig. 3, each combustion air port 24a, 24b is disposed between the melter 10 and the heat storage chambers 21a, 21b in a long passage shape by a refractory wall, and each combustion air port Dampers 27 are provided at 24a and 24b to open the combustion air ports 24a and 24b. The damper 27 is operated by the predetermined damper driver 29.

Through-holes 31 for installing the dampers 27 are provided in the refractory walls of the combustion air ports 24a and 24b which face each other in the direction in which the combustion air flows. 27) is inserted. The damper 27 is made of a refractory brick, and one end is disposed in the combustion air ports 24a and 24b, and the other end is provided to be exposed to the outside of the combustion air ports 24a and 24b.

In this embodiment, the damper 27 made of a firebrick is allowed to be moved by an operator. However, the damper driver 29 for driving the damper 27 may be provided at the other end of the damper 27. That is, as shown in Figure 4, by implementing the damper driving unit 29 as an actuator, the cylinder body is fixed to the outside of the melter 10, the length of the cylinder body extending to the end region of the cylinder body damper (27) By fixing to the other end of the damper 27, the damper 27 can be moved by the working fluid. In this case, the flame detection unit 32 for detecting the flame is provided in the burners 25a and 25b and the control unit 30 automatically operates the damper driver 29 based on the signal of the flame detection unit 32. The opening degree of the combustion air ports 24a and 24b can also be adjusted.

In some cases, a guide rail may be provided on the edge of the through hole 31 formed in the refractory wall of the combustion air ports 24a and 24b, and the damper 27 may be engaged with the guide rail in a mutual dovetail shape. As a result, the damper 27 may be easily moved without being separated from the through hole 31.

By such a configuration, among the burners 25a and 25b arranged in a row on the left and right sides of the melter 10, a process of injecting a flame into the melter 10 assuming that the burner 25a disposed on the left side is operated first. This is as follows.

First, with the right burners 25b down, the left burners 25a are up and disposed in the left combustion air ports 24a, respectively, whereupon fuel and 1 are burned to the left burners 25a. By supplying the secondary combustion air, the left burners 25a inject flames of different intensity into the melter 10 according to their positions. At this time, secondary combustion air is provided to the left burners 25a to assist combustion of the flame injected from the left burner 25a.

When the secondary combustion air provided from the combustion air supply unit (not shown) is supplied through the left horizontal flue 22a and the left vertical flue 23a, the secondary combustion air is divided into the left combustion air ports 24a, respectively. Thereafter, the left burners 25a disposed in the left combustion air ports 24a are provided in a predetermined amount to assist the flames of the left burners 25a.

At this time, as described above, each of the left combustion air ports 24a is provided with a damper 27 for controlling the amount of secondary combustion air, so that the operator adjusts the opening degree of the damper 27 appropriately, whereby each left combustion air is provided. The amount of secondary combustion air provided to the port 24a can be adjusted appropriately. Here, the damper 27 is omitted because it can be operated by the damper driver 29 can have a variety of embodiments, as described above.

As such, the second burner air provided to each of the left combustion air ports 24a causes the left burners 25a to spray the flame having the intensity set for each position. At this time, the waste gas generated in the melter 10 is discharged to the outside via the right combustion air port 24b via the right vertical year 23b and the right horizontal year 22b.

When a predetermined time elapses and the injection of the flame by the left burners 25a is completed, the left burners 25a are down again and the right burners 25b are up at a predetermined time interval. The flame is sprayed into the melter 10. In this case, since the opening degree of the right combustion air port 24b can be adjusted by the damper 27 provided in the right combustion air port 24b, it is possible to appropriately adjust the intensity of flame for each position of the right burners 25b. The left heat storage chamber 21a forms a discharge path of the waste gas generated in the melter 10. As such, the solid glass material introduced into the melter 10 is melted and then directed to the refiner 14 by alternating operations of the burners 25a and 25b disposed on the left and right sides of the melter 10.

As described above, in the present invention, the temperature control for each position in the melter 10 can be compensated by appropriately adjusting the amount of secondary combustion air provided to the combustion air ports 24a and 24b using the damper 27. It is possible to obtain high quality glass.

In addition to the above-described embodiment, the damper driving unit may be provided with a pair of sprocket wheels rotatable by a motor and connected to the chain to allow the damper to move.

In the above-described embodiment, the dampers are described as refractory bricks, but in addition to the refractory bricks, the dampers may be replaced with other materials, for example, synthetic resins and engineering plastics.

As described above, according to the present invention, there is provided a glass melting furnace that can appropriately control the combustion air provided to the combustion air port.

In addition, according to the present invention, it is possible to obtain a glass of good quality by compensating the temperature management for each position in the melter.

Claims (5)

A melter for melting glass raw materials, a pair of heat storage chambers disposed at both sides of the melter to supply combustion air into the melter or to discharge waste gas generated in the melter, between the melter and the pair of heat storage chambers A glass melting furnace having a plurality of combustion air ports arranged to form a flow path of combustion air, and a plurality of burners disposed in each of the combustion air ports to inject flame into the melter, A damper provided in the combustion air port to adjust an opening degree of the combustion air port; Glass melting furnace comprising a damper driving unit for driving the damper. The method of claim 1, Each combustion air port is arranged in a long passage shape between the melter and the heat storage chamber by a refractory wall, The damper is inserted into the through-hole formed in the refractory wall, one end is disposed in the combustion air port and the other end is exposed to the outside of the combustion air port. The method of claim 2, And said damper is a pair of refractory bricks disposed transversely in the traveling direction of said combustion air on said refractory walls facing each other. The method of claim 1, The damper driver is a glass melting furnace, characterized in that the actuator coupled to the end of the damper exposed to the outside to drive the damper transversely in the direction of travel of the combustion air. The method according to any one of claims 1 to 4, And a control unit for operating the damper driver based on the intensity of the flame sprayed from the burner.