阅读说明：本技术 一种窑炉和玻璃生产方法 (Kiln and glass production method ) 是由 童其亮 董耀阔 李兆廷 石志强 李震 何怀胜 许伟 于 2021-08-05 设计创作，主要内容包括：本发明实施例提供一种窑炉和玻璃生产方法,该窑炉包括：进料口,用于接收玻璃液样品；窑炉池,与进料口连通,窑炉池包括依次连接的生料区、加热区以及澄清区,窑炉池设置有烧枪和电极,烧枪和电极用于加热玻璃液样品,使得玻璃液样品转化为玻璃液；出料口,与窑炉池连通,用于排出所述玻璃液；根据生料区、加热区以及澄清区的温度变化趋势,调节烧枪和电极。该窑炉实现了炉内热点后移,促使炉内水平、垂直环流向后的方法,提高窑炉熔融温度达到超高温的生产需求,同时增强炉内后区澄清能力,解决气泡不良的问题。(The embodiment of the invention provides a kiln and a glass production method, wherein the kiln comprises the following components: the feed inlet is used for receiving a glass liquid sample; the furnace tank is communicated with the feeding hole and comprises a raw material zone, a heating zone and a clarification zone which are sequentially connected, and the furnace tank is provided with a burning gun and an electrode which are used for heating a glass melt sample so as to convert the glass melt sample into glass melt; the discharge hole is communicated with the kiln pool and used for discharging the molten glass; the burning gun and the electrode are adjusted according to the temperature change trend of the raw material zone, the heating zone and the clarification zone. The kiln realizes the backward movement of hot spots in the kiln, promotes the horizontal and vertical circulation in the kiln to backward, improves the melting temperature of the kiln to meet the production requirement of ultra-high temperature, enhances the clarification capability of the rear area in the kiln, and solves the problem of poor bubbles.)

1. A furnace for glass production, comprising:

the feed inlet is used for receiving a glass liquid sample;

the kiln pool is communicated with the feeding hole and comprises a raw material area, a heating area and a clarification area which are sequentially connected, and a burning gun and an electrode are arranged on the kiln pool and used for heating the molten glass sample so as to convert the molten glass sample into molten glass;

the discharge hole is communicated with the kiln pool and used for discharging the molten glass;

and adjusting the burning gun and the electrode according to the temperature change trends of the raw material zone, the heating zone and the clarification zone.

2. The kiln of claim 1,

the burning gun and the electrode are respectively positioned on two sides of the inner wall of the kiln pool.

3. The kiln of claim 1,

the raw material area is provided with two electrodes and two burning guns; the heating zone is provided with two electrodes and a burning gun; the clarifying zone is provided with an electrode and a burning gun;

adjusting electrodes and lances of one or more of the raw meal zone, heating zone and fining zone to control the temperature of the raw meal zone within a first temperature range, the temperature of the heating zone within a second temperature range, and the temperature of the fining zone within a third temperature range.

4. The kiln of claim 3,

the first temperature range is: T1-T1-101.5%, T1 is the preset value of the material area temperature;

the second temperature range is: T2-T2-100.5%, T2 is the preset temperature value of the heating zone;

the third temperature range is: T3-99.5-T3-101%, T3 is the preset value of the temperature in the clarification zone.

5. The kiln of claim 4,

the preset temperature value of the heating zone is greater than the preset temperature value of the clarification zone, and the preset temperature value of the clarification zone is greater than the preset temperature value of the raw material zone.

6. The kiln of claim 1,

controlling the rate of temperature change of said raw meal zone within a first rate range;

controlling a rate of temperature change of the heating zone within a second rate range;

controlling a rate of temperature change of the fining zone within a third rate range.

7. The kiln of claim 6,

the first rate range is: 0.1T 1 ℃/h-0.5T 1 ℃/h, T1 is the preset value of the charging area temperature;

the second rate range is: 0.1T 2 ℃/h-0.2T 2 ℃/h, T2 is the preset heating zone temperature value;

the third rate range is: 0.1T 3 ℃/h-0.2T 3 ℃/h, T3 is the preset value of the temperature of the clarification zone.

8. The kiln of claim 1,

the area of the clarifying zone is respectively larger than the area of the raw meal zone and the area of the heating zone.

9. The kiln of claim 1,

the kiln is a double-breast wall support iron.

10. A method for producing glass, characterized in that it uses a furnace according to any one of claims 1 to 9, comprising:

a glass liquid sample enters a kiln pool from a feeding hole, sequentially passes through a raw material zone, a heating zone and a clarification zone and then flows out from a discharging hole;

and adjusting the burning gun and the electrode according to the temperature change trends of the raw material zone, the heating zone and the clarification zone, so that the temperature in the kiln pool is constant.

11. The method of claim 10,

the burning gun and the electrode are adjusted according to the temperature change trend of the raw material zone, the heating zone and the clarification zone.

12. The method of claim 11,

the raw material area is provided with two electrodes and two burning guns; the heating zone is provided with two electrodes and a burning gun; the clarifying zone is provided with an electrode and a burning gun;

adjusting electrodes and lances of one or more of the raw meal zone, heating zone and fining zone to control the temperature of the raw meal zone within a first temperature range, the temperature of the heating zone within a second temperature range, and the temperature of the fining zone within a third temperature range.

Technical Field

The invention relates to the technical field of glass production, in particular to a kiln and a glass production method.

Background

With the progress of science and technology, the occupancy rate of TFT-LCD substrate glass in the market is continuously reduced, and instead, ultrahigh temperature glass with higher technical level and better performance is produced. The existing glass kiln has the following problems in production and manufacturing: the melting temperature can not meet the requirement of ultra-high temperature, and the production of novel ultra-high temperature glass can not be met.

Disclosure of Invention

It is an object of embodiments of the present invention to provide a furnace and a method for producing glass, the furnace having a higher heating temperature. The kiln comprises: the feed inlet is used for receiving a glass liquid sample; the kiln pool is communicated with the feeding hole and comprises a raw material area, a heating area and a clarification area which are sequentially connected, and a burning gun and an electrode are arranged on the kiln pool and used for heating the molten glass sample so as to convert the molten glass sample into molten glass; the discharge hole is communicated with the kiln pool and used for discharging the molten glass; and adjusting the burning gun and the electrode according to the temperature change trends of the raw material zone, the heating zone and the clarification zone.

Optionally, the burning gun and the electrode are respectively located on two sides of the inner wall of the kiln pool.

Optionally, the raw material region is provided with two electrodes and two burning guns; the heating zone is provided with two electrodes and a burning gun; the clarifying zone is provided with an electrode and a burning gun; adjusting electrodes and lances of one or more of the raw meal zone, heating zone and fining zone to control the temperature of the raw meal zone within a first temperature range, the temperature of the heating zone within a second temperature range, and the temperature of the fining zone within a third temperature range.

Optionally, the first temperature range is: T1-T1-101.5%, T1 is the preset value of the material area temperature; the second temperature range is: T2-T2-100.5%, T2 is the preset temperature value of the heating zone; the third temperature range is: T3-99.5-T3-101%, T3 is the preset value of the temperature in the clarification zone.

Optionally, the preset heating zone temperature value is greater than the preset clarification zone temperature value, and the preset clarification zone temperature value is greater than the preset raw meal zone temperature value.

Optionally, controlling the rate of temperature change of said green zone within a first rate range; controlling a rate of temperature change of the heating zone within a second rate range; controlling a rate of temperature change of the fining zone within a third rate range.

Optionally, the first rate range is: 0.1T 1 ℃/h-0.5T 1 ℃/h, T1 is the preset value of the charging area temperature; the second rate range is: 0.1T 2 ℃/h-0.2T 2 ℃/h, T2 is the preset heating zone temperature value; the third rate range is: 0.1T 3 ℃/h-0.2T 3 ℃/h, T3 is the preset value of the temperature of the clarification zone.

Optionally, the area of the fining zone is greater than the area of the raw meal zone and the area of the heating zone, respectively.

Optionally, the kiln is double-breast wall back iron.

Correspondingly, the embodiment of the invention also provides a high-temperature glass production method, which utilizes the kiln of any one of the above-mentioned methods, and comprises the following steps: a glass liquid sample enters a kiln pool from a feeding hole, sequentially passes through a raw material zone, a heating zone and a clarification zone and then flows out from a discharging hole; and adjusting the burning gun and the electrode according to the temperature change trends of the raw material zone, the heating zone and the clarification zone, so that the temperature in the kiln pool is constant.

Optionally, the burning gun and the electrode are adjusted according to the temperature change trend of the raw material zone, the heating zone and the clarification zone.

Optionally, the raw material region is provided with two electrodes and two burning guns; the heating zone is provided with two electrodes and a burning gun; the clarifying zone is provided with an electrode and a burning gun; adjusting electrodes and lances of one or more of the raw meal zone, heating zone and fining zone to control the temperature of the raw meal zone within a first temperature range, the temperature of the heating zone within a second temperature range, and the temperature of the fining zone within a third temperature range.

Through the technical scheme, the invention realizes the method for moving hot spots in the furnace backwards and promoting the horizontal and vertical circulation in the furnace backwards, improves the melting temperature of the furnace to meet the production requirement of ultrahigh temperature, enhances the clarification capability of the rear area in the furnace and solves the problem of poor bubbles.

Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:

FIG. 1 is a schematic of the temperature distribution between a furnace of the present invention and a conventional furnace zone;

FIG. 2 is a front view of a kiln of the present invention;

fig. 3 and 4 are side views of a kiln of the present invention.

Description of the reference numerals

1 first breast wall support iron 2 breast wall

3 pool wall 4 second breast wall support iron

5 feed inlet and 6 discharge outlet

21 raw material zone first burning gun 22 raw material zone second burning gun

23 heating zone burning gun 24 clarification zone burning gun

31 green region first electrode 32 green region second electrode

33 heating zone first electrode 34 heating zone second electrode

35 clarification zone electrode

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.

Fig. 2 is a front view of a kiln of the present invention, and fig. 3 and 4 are side views of a kiln of the present invention. The kiln is used for producing high-temperature glass, and is characterized by comprising the following components: the device comprises a feed inlet 5, a discharge outlet 6 and a kiln pool, wherein the kiln pool is communicated with the feed inlet and is used for receiving a glass melt sample and comprises a raw material zone, a heating zone and a clarification zone which are sequentially connected, the kiln pool is provided with a burning gun and an electrode, and the burning gun and the electrode are used for heating the glass melt sample so as to convert the glass melt sample into glass melt; the burning gun and the electrode are respectively positioned on two sides of the inner wall of the kiln pool. The discharge port 6 is communicated with the furnace tank for discharging the molten glass as shown in fig. 2, 3 and 4, 5 pairs of electrodes are arranged on the wall 3 of the furnace tank upwards along with the molten glass, the electrodes are preferably electrode bricks, namely a raw material region first electrode 31, a raw material region second electrode 32, a heating region first electrode 33, a heating region second electrode 34 and a clarification region electrode 35, wherein the distance between the clarification region electrode 35 and the heating region second electrode 34 is larger than the other electrode distances (such as the distance between the raw material region first electrode 31 and the raw material region second electrode 32, the distance between the raw material region second electrode 32 and the heating region first electrode 33, and the distance between the heating region first electrode 33 and the heating region second electrode 34). Meanwhile, 4 groups of pure oxygen burning guns are paired on the breast wall 2, namely a raw material region first burning gun 21, a raw material region second burning gun 22, a heating region burning gun 23 and a clarification region burning gun 24, wherein the raw material region first burning gun 21 and the raw material region second burning gun 22 are matched with the positions above a raw material region first electrode 31 and a raw material region second electrode 32, the heating region burning gun 23 is designed at the positions above a heating region first electrode 33 and a heating region second electrode 34, and the clarification region burning gun 24 is matched with the position above the heating region second electrode 34. The kiln is a double-breast wall supporting iron and comprises a breast wall supporting iron 1 and a second breast wall supporting iron 4, so that the problems that the longitudinal stress of the single-breast wall supporting iron is increased, the kiln is seriously deformed when being used in a long-time high-temperature environment, and even the breast wall is collapsed and the like are solved. The design is used for constructing a novel mixed electric melting pure oxygen kiln which takes electric energy as a main energy source and is assisted with pure oxygen combustion.

The raw material region first electrode 31 and the raw material region second electrode 32 are the main energy sources for providing melting raw materials, and the raw material region first burning gun 21 and the raw material region second burning gun 22 are matched with the two pairs of electrodes to provide energy sources for assisting in melting the raw materials; the first electrode 33 of the upper heating zone and the second electrode 34 of the upper heating zone of the heating section are used as main energy sources for increasing the temperature of the kiln and increasing the melting temperature, the burning gun 23 of the heating zone is matched with the first electrode 33 of the heating zone and the second electrode 34 of the heating zone to provide fuel energy, and can be adjusted and controlled according to the temperature change trend of a raw material zone, so that the effect of taking account of the upper and lower parts is achieved, and the temperature of the zone is the high point of the temperature in the kiln; the control area of the electrode 35 of the fining area on the fining section is larger, the fining area burning gun 24 is used as an auxiliary energy source for stabilizing the melting temperature, the main energy source is used for reducing the heat taken away by the glass liquid flow to the subsequent process, the design area of the area is larger than that of other areas, and the sufficient fining area is provided, so that the melting temperature can be maintained, and the melting quality can be improved.

The invention designs a high-precision kiln temperature control method which is suitable for the production of ultra-high temperature glass. And adjusting the burning gun and the electrode according to the temperature change trends of the raw material zone, the heating zone and the clarification zone. Adjusting electrodes and lances of one or more of the raw meal zone, heating zone and fining zone to control the temperature of the raw meal zone within a first temperature range, the temperature of the heating zone within a second temperature range, and the temperature of the fining zone within a third temperature range. For example: adjusting the electrodes and burning lance of said green stock zone to control the temperature of said green stock zone within a first temperature range; adjusting the electrodes and the burning gun of the heating area to control the temperature of the heating area to be within a second temperature range; adjusting the electrodes and burning guns of the fining zone to control the temperature of the fining zone within a third temperature range.

According to a particular embodiment: the first temperature range is: T1-T1-101.5%, T1 is the preset value of the material area temperature; the second temperature range is: T2-T2-100.5%, T2 is the preset temperature value of the heating zone; the third temperature range is: T3-99.5-T3-101%, T3 is the preset value of the temperature in the clarification zone. The preset heating zone temperature T2 is greater than the preset clarification zone temperature T3, and the preset clarification zone temperature T3 is greater than the preset raw meal zone temperature T1. Controlling the rate of temperature change of said raw meal zone within a first rate range; controlling a rate of temperature change of the heating zone within a second rate range; controlling a rate of temperature change of the fining zone within a third rate range. The first rate range is: 0.1T 1 ℃/h-0.5T 1 ℃/h, T1 is the preset value of the charging area temperature; the second rate range is: 0.1T 2 ℃/h-0.2T 2 ℃/h, T2 is the preset heating zone temperature value; the third rate range is: 0.1T 3 ℃/h-0.2T 3 ℃/h, T3 is the preset value of the temperature of the clarification zone. The area of the clarifying zone is respectively larger than the area of the raw meal zone and the area of the heating zone. Assuming that the temperature of the raw material section is T1, the temperature of the heating section is T2, and the temperature of the clarifying section is T3, the temperature control method of the above-mentioned regions is required as follows: (1) setting the technological parameters of the heating device to heat the kiln, so that: the temperature of the raw material section is controlled in the range of T1-1% T1 to T1+ 1.5% T1; the temperature of the heating section is controlled within the range of T2 +/-0.5% T2; the temperature of the clarifying section is controlled in the range of T3-0.5% T3 to T3+ 1% T3. (2) The stability of the three-section temperature is accurately controlled, and the process requirements of the high-temperature glass are met: the control of the T1 temperature requires adjusting the parameter setting of the heating device according to the temperature change of the raw material region (including but not limited to the temperature change of the raw material region influenced by the length of the raw material pile, the material accumulation state, the trend of the raw material pile, the granularity of raw materials, batch switching and the like), and the parameter setting is changed at the rate of (0.1-0.5) T1 ℃/h; the T2 temperature is controlled by considering the temperature change slope caused by the rising or falling of the T1 temperature, and adjusting the parameter setting of the heating device to correspond to the temperature change of the front region at the rate of (0.1-0.2) T2 ℃/h; the T3 temperature is controlled by comprehensively considering the temperature change slope caused by the rise or fall of the T1 and T2 two-stage temperature, and adjusting the parameter setting of the heating device to correspond to the change of the front zone temperature at the rate of (0.1-0.2) T3 ℃/h. T2> T3> T1 in the above temperature. The temperature in the furnace can be ensured to reach the required high temperature and be stable by the temperature control method. The temperature control realizes accurate control by setting the position relation among the heating devices.

The rear zone of the kiln of the present invention establishes a relatively stable fining zone which includes primarily the heating zone second electrode 34 through the entire rear end of the kiln tail. In the production process, the gas quantity of the burning gun 24 in the clarification zone and the loading power of the electrode 35 in the clarification zone can be independently increased, so that the zone is used as an energy loading zone for increasing the temperature of the kiln, the aim of increasing the temperature of the clarification section is fulfilled, the glass defects caused by poor melting are reduced, the production process requirement of high temperature is met, meanwhile, the zone has larger area relative to the front zone, has stronger clarification capability, and further improves the melting quality of glass.

Assuming that the distance between the green region first electrode 31 and the green region second electrode 32 is D1, the distance between the green region second electrode 32 and the heating region first electrode 33 is D2, the distance between the heating region first electrode 33 and the heating region second electrode 34 is D3, and the distance between the heating region second electrode 34 and the fining region electrode 35 is D4; the width of the electrode brick is H. (the following designs are provided for setting the position of the burning gun, all with reference to the vertical center line of the burning gun)

First embodiment (as shown in fig. 3):

D1＝D2＝D3<D4；

the raw material region first burning gun 21, the raw material region second burning gun 22 and the clarification region burning gun 24 are respectively positioned above the raw material region first electrode 31, the raw material region second electrode 32 and the clarification region electrode 35, and the position setting range is set between 0 and H; (position setting means: the position setting range of the burning torch is based on the vertical center line of the burning torch and the corresponding electrode as a reference, the burning torch is set at 1/2H position where the burning torch coincides with the vertical center line of the corresponding electrode, the burning torch is set at 0 position, that is, the center line of the burning torch is directly above the left edge of the corresponding electrode, and the position H position where the center line of the burning torch is directly above the right edge of the corresponding electrode.)

The hot zone torch 23 is positioned between the first electrode 33 of the hot zone and 1/4D3-3/4D3 of the second electrode 34 of the hot zone.

The setting of the position of the heating device can realize two-part heating function, the raw material zone first burning gun 21 to the heating zone burning gun 23 are matched with the raw material zone first electrode 31 to the heating zone second electrode 34 to be a part of heating zone, the uniform heating function can be realized, and the temperature of the raw material section and the heating section can be accurately controlled by setting the technological parameters of the heating device; the clarification zone burning gun 24 is matched with the clarification zone electrode 35 to form a latter part of heating zone, so that a high-temperature heating function can be realized, and the temperature of the clarification section is accurately controlled by setting the technological parameters of the heating device, so that the temperature gradient of the temperature curve of the novel mixed electric melting pure oxygen kiln shown in figure 1 is realized.

Second embodiment (shown in fig. 4):

D1≠D2≠D3＜D4；

the raw material region first burning gun 21, the raw material region second burning gun 22 and the clarification region burning gun 24 are respectively positioned above the raw material region first electrode 31, the raw material region second electrode 32 and the clarification region electrode 35, and the position setting range is set between 0 and H; (same as the explanation of the position setting of the first embodiment)

The heating-zone torch 23 is located between the heating-zone first electrode 33 and the heating-zone second electrodes 340 to the range (D3+ H).

The setting of the positions of the heating devices can independently set each group of heating devices as a heating zone, and the temperature of the raw material section, the heating section and the clarification section is accurately controlled by setting the technological parameters of the heating devices, so that the temperature gradient of the temperature curve of the novel mixed electric smelting pure oxygen furnace in the figure 1 is realized.

In the prior art, the defect of poor melting of glass is usually overcome by increasing the temperature of the bottom of the furnace, namely increasing the temperature of the glass liquid, but the requirement of novel ultra-high temperature glass on the melting temperature is higher, and the production requirement of the high temperature glass is difficult to meet by the existing furnace temperature control method. Aiming at the temperature requirements, the temperature control method for the high-precision kiln realizes backward movement of a hot point in the kiln by designing a novel mixed electric melting pure oxygen kiln and adjusting the position of a heating device, promotes a method for backward horizontal and vertical circulation in the kiln, improves the melting temperature of the kiln to meet the production requirement of ultrahigh temperature, enhances the clarification capability of a rear area in the kiln, and solves the problem of poor bubbles.

The invention also provides a high-temperature glass production method, which utilizes the kiln and comprises the following steps: a glass liquid sample enters a kiln pool from a feeding hole, sequentially passes through a raw material zone, a heating zone and a clarification zone and then flows out from a discharging hole; and adjusting the burning gun and the electrode according to the temperature change trends of the raw material zone, the heating zone and the clarification zone, so that the temperature in the kiln pool is constant. The OLED/LCD substrate glass and the OLED carrier plate glass manufactured by the overflow downdraw method are used for production, and particularly, the high-quality high-temperature glass is produced by a method for accurately controlling the temperature of a kiln by setting the position relation between heating devices through a novel mixed electric melting pure oxygen kiln for producing ultra-high-temperature glass.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not describe every possible combination.

Those skilled in the art will understand that all or part of the steps in the method according to the above embodiments may be implemented by a program, which is stored in a storage medium and includes several instructions to enable a single chip, a chip, or a processor (processor) to execute all or part of the steps in the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.