CN109721222B - Glass kiln and control method thereof - Google Patents
Glass kiln and control method thereof Download PDFInfo
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- CN109721222B CN109721222B CN201910123096.3A CN201910123096A CN109721222B CN 109721222 B CN109721222 B CN 109721222B CN 201910123096 A CN201910123096 A CN 201910123096A CN 109721222 B CN109721222 B CN 109721222B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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Abstract
The embodiment of the invention provides a glass kiln and a control method of the glass kiln, and relates to the technical field of glass manufacturing. The glass kiln comprises: one end of the clarification tank is provided with a discharge port, and the other end of the clarification tank is connected with the melting tank through the throat; and the heating modules comprise a first heating module and a second heating module and are used for melting the raw materials in the melting tank into molten glass and enabling the clarifying agent in the raw materials to release gas through heating. Through the technical scheme, on the basis that the existing kiln only comprises the melting tank, the throat and the clarification tank are additionally arranged, so that the glass liquid can be subjected to a glass liquid clarification process before entering the channel, the bubble rate in the glass liquid is effectively reduced, the bubble defect is reduced, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of glass manufacturing, in particular to a glass kiln and a control method of the glass kiln.
Background
In the manufacturing process of TFT, LTPS substrate glass and optical glass, the glass is melted in a kiln, the melted glass flows to a channel, and a forming disease is formed into a glass substrate. Because the prior TFT and LTPS glass substrates are made of more environment-friendly raw materials, and the metal oxide serving as a new clarifying agent needs higher clarifying temperature, the clarifying temperature of glass liquid needs to be improved, and the yield needs to be improved at the same time so as to meet the market demand.
Disclosure of Invention
An object of an embodiment of the present invention is to provide a glass kiln and a control method of the glass kiln, which are used for solving one or more of the above technical problems.
In order to achieve the above object, an embodiment of the present invention provides a glass furnace, including: one end of the clarification tank is provided with a discharge port, and the other end of the clarification tank is connected with the melting tank through the throat; and the heating modules comprise a first heating module and a second heating module and are used for melting the raw materials in the melting tank into molten glass and enabling the clarifying agent in the raw materials to release gas through heating.
Optionally, the clarifier includes: and the weir is arranged on the inner wall of the bottom of the clarification tank and used for reducing the thickness of the molten glass on the upper part of the weir.
Optionally, the height of the weir is 30mm to 100 mm; the height from the upper surface of the weir to the liquid level of the molten glass is 50mm to 100 mm.
Optionally, the height of the weir is 50mm to 80mm, the height of the upper surface of the weir from the liquid level of the molten glass is 70mm to 100mm, or the height of the weir is 30mm to 50mm, and the height of the upper surface of the weir from the liquid level of the molten glass is 50mm to 80 mm.
Optionally, the heating module includes: the burning guns are arranged on the wall surfaces of the melting tank and the clarification tank, the positions of the burning guns are higher than the liquid level of the molten glass, and the end parts of the burning guns extend into the melting tank and the clarification tank to heat the upper air in the melting tank and the clarification tank; and electrodes disposed on the walls of the melting tank and the clarification tank and disposed at least partially in liquid-phase contact with the glass in the tank.
Optionally, the electrode is disposed below the lance.
Optionally, a first plurality of burning guns are symmetrically arranged on the wall surface of the melting tank, and a second plurality of burning guns are symmetrically arranged on the wall surface of the clarification tank; the first plurality of electrodes are symmetrically disposed on the wall of the melting tank, and the second plurality of electrodes are symmetrically disposed on the wall of the clarifier.
Optionally, the glass kiln further comprises: and the temperature detection module is used for detecting the temperature of the molten glass in the melting tank and the clarifying tank.
Optionally, the temperature detection module is a thermocouple, and the thermocouple includes a thermocouple AT for the upper portions of the melting tank and the clarifier and a thermocouple BT located AT the bottom portions of the melting tank and the clarifier.
In another aspect, the present invention also provides a control method for a glass kiln according to any one of the preceding claims, the method comprising: controlling the first heating module to enable the temperature in the melting tank to be in a first preset temperature range, so that raw materials entering the melting tank are melted into molten glass, and gas is released from a clarifying agent in the raw materials, and the gas released from the clarifying agent collides with bubbles in the molten glass and polymerizes when the molten glass flows through the throat; and controlling the second heating module to enable the temperature in the clarifying pool to be in a second preset temperature range so that bubbles in the molten glass are removed from the molten glass.
Optionally, controlling the temperature in the melting tank to be within a first preset temperature range includes: the temperature range of the upper part of the liquid level of the melting tank is controlled, and the temperature range comprises the following steps: controlling a first temperature T11 at the upper part of the liquid surface in the middle of the melting tank to be in a temperature range of 1500-1580 ℃; controlling a second temperature T12 at an upper portion of the liquid surface at the front portion of the molten bath to be in a range of T11-30 ℃ to T11; controlling a third temperature T13 at an upper portion of a liquid surface at a rear portion of the molten bath to be in a range of T11-30 ℃ to T11; and controlling the temperature range of the bottom of the melting tank, comprising: controlling a first temperature T21 at the bottom of the middle portion of the melting tank to be in a temperature range of 1500 ℃ to 1650 ℃; controlling a second temperature T22 at the bottom of the front of the molten bath to be in the range of T21-50 ℃ to T21; the third temperature T23 at the bottom of the rear part of the molten bath was controlled to a temperature ranging from T21-30 ℃ to T21.
Optionally, the controlling the temperature in the clarification tank to be in the second preset temperature range includes: the temperature range of the upper part of the liquid level of the clarification tank is controlled, and the temperature range comprises the following steps: controlling the first temperature T31 at the upper part of the liquid surface in the middle of the clarification tank to be 1580-1630 ℃; controlling a second temperature T32 at an upper portion of the liquid surface at the front portion of the clarifier to be in a range of T31-20 ℃ to T31; controlling a third temperature T33 at an upper portion of the liquid surface at the rear portion of the clarifier to be in a temperature range of T31-20 ℃ to T31; and controlling the temperature range of the bottom of the clarification tank, comprising: controlling a first temperature T41 at the bottom of the middle portion of the clarifier to be in a temperature range of 1600 ℃ to 1650 ℃; the second temperature T42 at the bottom of the front portion of the clarifier is controlled to be in the range of T23 to T41.
Through the technical scheme, on the basis that the existing kiln only comprises the melting tank, the throat and the clarification tank are additionally arranged, so that the glass liquid can be subjected to a glass liquid clarification process before entering the channel, the bubble rate in the glass liquid is effectively reduced, the bubble defect is reduced, and the production efficiency is improved.
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 structural diagram of a glass furnace provided in an embodiment of the present invention;
FIG. 2 is a schematic structural view of a molten pool provided in an embodiment of the present invention;
FIG. 3 is a schematic structural view of a clarifier according to an embodiment of the present invention;
fig. 4 is a flowchart of a control method for a glass furnace according to an embodiment of the present invention.
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. 1 is a schematic structural diagram of a glass kiln provided by an embodiment of the invention. As shown in fig. 1, the glass furnace comprises: the glass melting device comprises a melting tank 1 and a clarification tank 2, wherein the melting tank and the clarification tank are connected through a throat LYD, and the direction of an arrow in the figure 1 is the flow direction of molten glass, namely molten glass flows into the clarification tank 2 from the melting tank 1 through the throat LYD. The end, opposite to the throat LYD, of the melting tank 1 is provided with a feeding port, raw materials are fed into the melting tank through the feeding port, the raw materials are melted into molten glass in the melting tank 1 under the heating action of a first heating module located in the melting tank 1, a clarifying agent in the raw materials starts to react, released gas starts to polymerize with bubbles in the molten glass, when the molten glass enters the clarifying tank through the throat, the gas released by the clarifying agent and the bubbles in the molten glass generate torrent collision and mass polymerization in the throat LYD, and small bubbles quickly become large bubbles. Under the action of the second heating module positioned in the clarification tank 2, the bubbles are gradually discharged out of the molten glass, so that the purpose of clarifying the molten glass is achieved.
According to the technical scheme provided by the embodiment of the invention, on the basis that the existing kiln only comprises the melting tank, the throat and the clarification tank are additionally arranged, so that the glass liquid can be clarified before entering the channel, the bubble rate in the glass liquid is effectively reduced, the bubble defect is reduced, and the production efficiency is improved.
Alternatively, the heating temperatures of the first heating module and the second heating module may be set by those skilled in the art, as long as the set temperatures can achieve the reaction temperature for melting the raw glass material and reaching the fining agent. Generally, the reaction temperature of the fining agent will be greater than the melting temperature of the glass batch materials, so the second heating module located within the fining tank will be heated to a temperature greater than the first heating module located within the melting tank.
Optionally, the first heating module and the second heating module may each comprise a burning gun for heating gas and an electrode for heating molten glass, and the temperature of the molten glass in the fining tank is always within a preset temperature range through the combined action of the burning gun and the electrode.
In general, the burning guns are arranged on the wall surfaces of the melting tank and the clarification tank, the burning guns are positioned higher than the liquid level of molten glass, the end parts of the burning guns penetrate into the melting tank and the clarification tank, natural gas and oxygen are combusted after passing through the burning guns and spray flame into the kiln, and the temperature of the upper part of the kiln (including the temperature of the upper parts of the melting tank and the clarification tank) is controlled by adjusting the consumption of the natural gas and the oxygen in the production process. The electrodes are disposed on the wall surfaces of the melting tank and the fining tank so as to be at least partially in contact with the molten glass in the melting tank and the fining tank, and the electrodes are disposed in pairs, each pair of electrodes forming a circuit with the molten glass, and after the electrodes are powered on, the temperature of the molten glass can be adjusted by adjusting the value of the current flowing through the molten glass between the pair of electrodes, for example, when the current is increased, the amount of heat generated between the electrodes is increased, the temperature of the molten glass is increased, and when the current is decreased, the amount of heat generated between the electrodes is decreased, and the temperature of the molten glass is decreased.
As shown in fig. 2 and 3, which are a schematic structural view of the melting tank and a schematic structural view of the clarifier, respectively, in general, since molten glass is located at the bottom of both the melting tank 1 and the clarifier 2, the electrode DJ should be disposed below the lance SQ.
When the number of the burning guns and the number of the electrodes are both multiple, the first plurality of the burning guns are symmetrically arranged on the wall surface of the melting tank, the second plurality of the burning guns are symmetrically arranged on the wall surface of the clarification tank, the first plurality of the electrodes are symmetrically arranged on the wall surface of the melting tank, and the second plurality of the electrodes are symmetrically arranged on the wall surface of the clarification tank.
The number of the burning guns and the electrodes arranged at the melting tank and the clarification tank, the size of the electrode plates and the like can be selected by a worker according to actual conditions. This embodiment of the present invention provides a specific solution for explaining the heating module in detail in the present invention.
Specifically, as shown in fig. 1, the glass furnace provided by this embodiment of the present invention employs 14 electrodes and 12 burning guns. Wherein, burning guns SQ1, burning guns SQ2, burning guns SQ3, burning guns SQ4, burning guns SQ5 and burning guns SQ6 are evenly and symmetrically distributed at two sides of the upper space of the glass liquid surface of the melting tank 1, burning guns SQ7, burning guns SQ8, burning guns SQ9, burning guns SQ10, burning guns SQ11 and burning guns SQ12 are evenly and symmetrically distributed at two sides of the upper space of the glass liquid surface of the clarification tank 2, electrodes DJ1, electrodes DJ2, electrodes DJ3, electrodes DJ4, electrodes DJ5 and electrodes DJ6 are evenly and symmetrically distributed at two sides of the lower part of the glass liquid surface of the melting tank 1, electrode DJ7, electrode DJ8, electrode DJ9, electrode DJ10, electrode DJ11, electrode DJ12, electrode DJ13, and electrode DJ14 are distributed evenly and symmetrically on both sides of the lower portion of the glass surface of clarifier 2 (in fig. 1, due to the angle of view, lance SQ2, lance SQ4, lance SQ6, lance SQ8, lance SQ10, and lance SQ12, and also electrode DJ4, electrode DJ5, electrode DJ6, electrode DJ8, electrode DJ10, electrode DJ12, and electrode DJ14 are not shown in fig. 1).
Furthermore, in order to realize more precise temperature control, corresponding temperature detection modules can be arranged in the melting tank and the clarification tank, and the temperature in the melting tank and the clarification tank can be adjusted in a closed loop mode according to the temperature data detected by the temperature detection modules. Wherein the temperature detection module should enable detection of the temperature of the molten glass and the air above the molten glass in the melting tank and the fining tank. For example, as shown in FIGS. 2 and 3, the embodiment employs an upper thermocouple AT and a lower thermocouple BT for detecting the temperature of the upper portion of the melting tank 1, the temperature of the lower portion of the melting tank, the temperature of the upper portion of the clarifier, and the temperature of the lower portion of the clarifier, respectively.
Wherein the number of the upper thermocouple AT and the lower thermocouple BT may be plural, this embodiment of the present invention provides a specific solution to explain the functions, installation positions, and the like of the plural thermocouples.
As shown in fig. 1, the glass furnace provided in this embodiment of the present invention employs 6 upper thermocouples for reflecting the temperature in the furnace space and 6 lower thermocouples for reflecting the temperature at the bottom of the molten glass. Wherein, the thermocouple AT1, the thermocouple AT2 and the thermocouple AT3 are distributed AT the upper part of the melting tank 1, the thermocouple AT4, the thermocouple AT5 and the thermocouple AT6 are distributed AT the upper part of the clarification tank 2, the thermocouple BT1, the thermocouple BT2 and the thermocouple BT3 are distributed AT the lower part of the melting tank 1, and the thermocouple BT4, the thermocouple BT5 and the thermocouple BT6 are distributed AT the lower part of the clarification tank 2.
Optionally, in order to further improve the fining efficiency of the molten glass in the furnace, as shown in fig. 1, a weir YK may be further disposed on the inner wall of the bottom of the fining tank 2 to reduce the thickness of the molten glass located above the weir YK, and in the case of a thin thickness of the molten glass, the time required for the bubbles to be discharged from the inside of the molten glass is short, so that the discharge path of the bubbles from the bottom of the molten glass to the top of the molten glass can be reduced.
The kiln bank YK is a bank which is built by refractory materials and penetrates through the clarification tank 1, is buried at the lower part of the molten glass and is positioned at the front part of the bottom of the clarification tank 2.
Optionally, according to the actual production situation, the height H2 of the weir YK is generally set to 30mm to 100mm, and the height H1 of the upper surface of the weir YK from the liquid level of the molten glass is set to 50mm to 100mm, so that the bubble rate can be effectively reduced.
Preferably, the height H2 of the weir YK is 50mm to 80mm, and the height H1 of the upper surface of the weir YK from the liquid level of the molten glass is 70mm to 100 mm.
Preferably, the height H2 of the weir YK is 30mm to 50mm, and the height H1 of the upper surface of the weir YK from the liquid level of the molten glass is 50mm to 80 mm.
In addition, in connection with fig. 1, thermocouple BT4 corresponds to the position of electrode DJ7 and electrode DJ8, and thermocouple BT5 is disposed below the weir YK.
On the basis of the glass kiln provided by the embodiment of the invention, the temperature rule in the kiln is set as follows: the temperature of the molten glass in the melting tank and the clarifying tank is higher than the temperature of the upper part of the liquid level of the molten glass, the temperature of the middle part of the melting tank is higher than the temperature of the feeding port of the melting tank and the temperature of the throat, and the temperature of the middle part of the clarifying tank is higher than the temperature of the throat and the temperature of the discharging port.
This embodiment of the present invention provides a specific method of controlling the temperature in the melting tank and the fining tank in conjunction with fig. 1:
1500℃≤TAT2≤1580℃；
TAT2－30℃≤TAT1＜TAT2，TAT2－30℃≤TAT3＜TAT2；
1600℃≤TAT5≤1630℃；
TAT5－20℃≤TAT4＜TAT5，TAT5－20℃≤TAT6≤TAT5；
1550℃≤TBT2≤1650℃；
TBT2－50℃≤TBT1＜TBT2，TBT2－30℃≤TBT3＜TBT2；
1600℃≤TBT5≤1650℃；
TBT3≤TBT4≤TBT5。
the temperature in the above represents the real-time temperature detected by the thermocouple, and experimental research shows that under the temperature setting, the raw materials can be fully melted, and the clarifier can be prevented from being decomposed prematurely.
The specific working process of the glass kiln provided by the embodiment of the invention is as follows: when the raw materials are pushed to the melting tank through a charging port under the action of a charging machine, the raw materials in the melting tank start to melt under the heating action of a burning gun and an electrode and flow to a throat along with the flow direction of molten glass, the raw materials are changed into molten glass along with continuous heating, the temperature of an upper thermocouple and a lower thermocouple of the melting tank reaches a set temperature and keeps stable by adjusting the gas quantity of the burning gun and the current value of the electrode, at the moment, the molten glass contains a large number of bubbles, when the molten glass passes through the rear part of the melting tank, the temperature of a thermocouple BT2 at the lower part of the melting tank reaches the temperature which enables a clarifier in the raw materials to react violently and release a large number of oxygen, the oxygen is combined with the bubbles in the molten glass, when the molten glass enters the melting tank through the throat, torrent collision between the clarifying gas and the gas in the throat occurs and large number of polymerization, the small bubbles are quickly changed into large bubbles, when the glass liquid enters the clarifier, the temperature setting in the clarifier needs to ensure the temperature of the thermocouple BT5 to be the highest, and also needs to ensure the temperature rising process from the thermocouple BT3 to the thermocouple BT5, such a setting may allow the molten glass to continue to be heated after entering the finer, the temperature of the lower thermocouple BT4 to continue to rise, the fining agent to continue to react, the fining gases to continue to be released, so that the bubbles in the molten glass become larger and larger, when the molten glass flows through the weir of the clarification tank, the temperature of the molten glass reaches the highest, and the viscosity of the molten glass is the lowest, and the thickness of the glass liquid is the thinnest, the bubbles in the glass liquid are quickly discharged out of the glass liquid, and the glass liquid keeps high temperature after passing through the kiln bank, the bubbles which are not discharged at the position of the kiln bank are continuously discharged at high temperature, and the glass liquid after the clarification treatment flows to the next procedure through a discharge hole.
Experimental studies have shown that the temperature is set as: t is more than or equal to 1500 DEG CAT2≤1550℃、TAT2－30℃≤TAT1＜TAT2、TAT2－30℃≤TAT3＜TAT2、1600℃≤TAT5≤1615℃、TAT5－20℃≤TAT4＜TAT5、TAT5－20℃≤TAT6≤TAT5、1550℃≤TBT2≤1600℃、TBT2－50℃≤TBT1＜TBT2、TBT2－30℃≤TBT3＜TBT2、1600℃≤TBT5≤1625℃、TBT3≤TBT4≤TBT5And the height H2 of the weir YK is 50mm to 80mm, the height H1 of the upper surface of the weir YK from the liquid level of the molten glass is 70mm to 100mm, and the bubble rate can be reduced by 10% under the condition that the state of the kiln is stable.
Experimental studies have shown that the temperature is set as: t is not less than 1550 DEG CAT2≤1580℃、TAT2－20℃≤TAT1＜TAT2、TAT2－20℃≤TAT3＜TAT2、1615℃≤TAT5≤1630℃、TAT5－15℃≤TAT4＜TAT5、TAT5－15℃≤TAT6≤TAT5、1600℃≤TBT2≤1650℃、TBT2－30℃≤TBT1＜TBT2、TBT2－20℃≤TBT3＜TBT2、1620℃≤TBT5≤1650℃、TBT3≤TBT4≤TBT5The height H2 of the weir YK is 30mm to 50mm, the height H1 of the upper surface of the weir YK from the liquid level of the molten glass is 50mm to 80mm, and the bubble rate can be reduced by 15% under the condition that the state of the kiln is stable.
The technical scheme provided by the invention can be used for clarifying in the kiln, so that the gas flowing into the molten glass in the next procedure from the kiln is greatly reduced, the bubble defect can be reduced, and the benefit of the production line is improved.
Fig. 4 is a flowchart of a control method of a glass kiln according to an embodiment of the present invention. As shown in fig. 4, the control method includes: controlling a first heating module to enable the temperature in the melting tank to be in a first preset temperature range, so that raw materials entering the melting tank are melted into molten glass, and gas is released from a clarifying agent in the raw materials, and the gas released from the clarifying agent collides with bubbles in the molten glass and polymerizes when the molten glass flows through the throat; and controlling a second heating module to enable the temperature in the clarifying pool to be in a second preset temperature range so that bubbles in the molten glass are removed from the molten glass.
Specifically, referring to fig. 2, the controlling the temperature in the melting tank to be in the first preset temperature range includes controlling the temperature range of the upper part of the liquid level of the melting tank and controlling the temperature range of the bottom of the melting tank.
Wherein, the temperature range of the upper part of the liquid level of the melting tank is controlled, and the method comprises the following steps:
controlling a first temperature T11 at the upper part of the liquid surface in the middle of the melting tank to be in a temperature range of 1500-1580 ℃;
controlling a second temperature T12 at an upper portion of the liquid surface at the front portion of the molten bath to be in a range of T11-30 ℃ to T11; and
the third temperature T13 at the upper part of the liquid surface at the rear part of the melting tank is controlled to be in the range of T11-30 ℃ to T11.
Controlling the temperature range of the bottom of the melting tank, comprising:
controlling a first temperature T21 at the bottom of the middle portion of the melting tank to be in a temperature range of 1500 ℃ to 1650 ℃;
controlling a second temperature T22 at the bottom of the front of the molten bath to be in the range of T21-50 ℃ to T21; and
the third temperature T23 at the bottom of the rear part of the molten bath was controlled to a temperature ranging from T21-30 ℃ to T21.
And controlling the temperature in the clarification tank to be in a second preset temperature range comprises controlling the temperature range of the upper part of the liquid level of the clarification tank and the temperature range of the bottom of the clarification tank.
Wherein the temperature range of the upper part of the liquid level of the clarification tank is controlled, and the temperature range comprises the following steps:
controlling the first temperature T31 at the upper part of the liquid surface in the middle of the clarification tank to be 1580-1630 ℃;
controlling a second temperature T32 at an upper portion of the liquid surface at the front portion of the clarifier to be in a range of T31-20 ℃ to T31; and
the third temperature T33 at the upper part of the liquid surface at the rear part of the clarifier is controlled to be in the temperature range of T31-20 ℃ to T31.
Controlling the temperature range of the bottom of the clarification tank, comprising:
controlling a first temperature T41 at the bottom of the middle portion of the clarifier to be in a temperature range of 1600 ℃ to 1650 ℃; and
the second temperature T42 at the bottom of the front portion of the clarifier is controlled to be in the range of T23 to T41.
Wherein, the temperature data are all real-time temperatures. Experimental research shows that under the temperature setting, the raw materials can be fully melted, and the clarifier can be prevented from being decomposed prematurely.
The specific details and benefits of the control method for the glass kiln provided by the embodiment of the invention are similar to the specific working principle and benefits of the glass kiln provided by the embodiment of the invention, and are not repeated herein.
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.
Claims (7)
1. A control method for a glass furnace, characterized in that the glass furnace comprises:
one end of the melting tank is provided with a feed inlet, the other end is connected with the throat,
one end of the clarification tank is provided with a discharge hole, and the other end of the clarification tank is connected with the melting tank through the throat; and
the heating module comprises a first heating module and a second heating module and is used for melting the raw materials in the melting tank into molten glass and enabling a clarifying agent in the raw materials to release gas through heating;
the heating module includes:
the burning guns are arranged on the wall surfaces of the melting tank and the clarification tank, the positions of the burning guns are higher than the liquid level of the molten glass, and the end parts of the burning guns extend into the melting tank and the clarification tank to heat the upper air in the melting tank and the clarification tank; and
electrodes disposed on the walls of the melting tank and the clarifier tank and disposed at least partially in liquid-phase contact with glass in the tank;
the first plurality of burners are symmetrically arranged on the wall surface of the melting tank, and the second plurality of burners are symmetrically arranged on the wall surface of the clarification tank;
the first plurality of electrodes are symmetrically arranged on the wall surface of the melting tank, and the second plurality of electrodes are symmetrically arranged on the wall surface of the clarification tank;
the first plurality of burning snacks are evenly and symmetrically distributed on two sides of the upper space of the glass liquid level of the melting tank, the second plurality of burning snacks are evenly and symmetrically distributed on two sides of the upper space of the glass liquid level of the clarification tank, the first plurality of electrodes are evenly and symmetrically distributed on two sides of the lower part of the glass liquid level of the melting tank, and the second plurality of electrodes are evenly and symmetrically distributed on two sides of the lower part of the glass liquid level of the clarification tank;
the control method comprises the following steps:
controlling the first heating module to enable the temperature in the melting tank to be in a first preset temperature range, so that raw materials entering the melting tank are melted into molten glass, and gas is released from a clarifying agent in the raw materials, and the gas released from the clarifying agent collides with bubbles in the molten glass and polymerizes when the molten glass flows through the throat;
controlling the second heating module to enable the temperature in the fining pool to be in a second preset temperature range so that bubbles in the molten glass are removed from the molten glass;
controlling the temperature within the melt tank within a first predetermined temperature range comprises:
the temperature range of the upper part of the liquid level of the melting tank is controlled, and the temperature range comprises the following steps:
controlling a first temperature T11 at the upper part of the liquid surface in the middle of the melting tank to be in a temperature range of 1500-1580 ℃;
controlling a second temperature T12 at an upper portion of the liquid surface at the front portion of the molten bath to be in a range of T11-30 ℃ to T11;
controlling a third temperature T13 at an upper portion of a liquid surface at a rear portion of the molten bath to be in a range of T11-30 ℃ to T11; and
controlling the temperature range of the bottom of the melting tank, comprising:
controlling a first temperature T21 at the bottom of the middle portion of the melting tank to be in a temperature range of 1500 ℃ to 1650 ℃;
controlling a second temperature T22 at the bottom of the front of the molten bath to be in the range of T21-50 ℃ to T21;
controlling a third temperature T23 at the bottom of the rear portion of the molten bath to be in the range of T21-30 ℃ to T21;
controlling the temperature within the fining tank to be within a second predetermined temperature range comprises:
the temperature range of the upper part of the liquid level of the clarification tank is controlled, and the temperature range comprises the following steps:
controlling the first temperature T31 at the upper part of the liquid surface in the middle of the clarification tank to be 1580-1630 ℃;
controlling a second temperature T32 at an upper portion of the liquid surface at the front portion of the clarifier to be in a range of T31-20 ℃ to T31;
controlling a third temperature T33 at an upper portion of the liquid surface at the rear portion of the clarifier to be in a temperature range of T31-20 ℃ to T31; and
controlling the temperature range of the bottom of the clarification tank, comprising:
controlling a first temperature T41 at the bottom of the middle portion of the clarifier to be in a temperature range of 1600 ℃ to 1650 ℃;
the second temperature T42 at the bottom of the front portion of the clarifier is controlled to be in the range of T23 to T41.
2. The control method according to claim 1, wherein the clarifier includes:
and the weir is arranged on the inner wall of the bottom of the clarification tank and used for reducing the thickness of the molten glass on the upper part of the weir.
3. The control method according to claim 2,
the height of the weir is 30mm to 100 mm;
the height from the upper surface of the weir to the liquid level of the molten glass is 50mm to 100 mm.
4. The control method according to claim 2,
the height of the weir is 50mm to 80mm, and the height of the upper surface of the weir from the liquid level of the molten glass is 70mm to 100mm, or
The height of the weir is 30mm to 50mm, and the height of the upper surface of the weir from the liquid level of the molten glass is 50mm to 80 mm.
5. The control method of claim 1, wherein the electrode is disposed below the lance.
6. The control method of claim 1, wherein the glass furnace further comprises:
and the temperature detection module is used for detecting the temperature of the molten glass in the melting tank and the clarifying tank.
7. The control method according to claim 6, wherein the temperature detection module is a thermocouple, and the thermocouple includes a thermocouple AT for an upper portion of the melting tank and the clarifier and a thermocouple BT AT a bottom portion of the melting tank and the clarifier.
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| CN110395881A (en) * | 2019-07-19 | 2019-11-01 | 东旭(锦州)精密光电科技有限公司 | A kind of glass metal clarifying equipment and glass metal defecation method |
| CN112573817A (en) * | 2020-11-05 | 2021-03-30 | 河南光远新材料股份有限公司 | Production process of low-bubble low-dielectric glass fiber yarn |
| CN113754245A (en) * | 2021-08-05 | 2021-12-07 | 芜湖东旭光电科技有限公司 | Kiln and glass production method |
| CN115304241A (en) * | 2022-07-28 | 2022-11-08 | 陕西彩虹工业智能科技有限公司 | One-kiln two-line production line for substrate glass and production method |
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Application publication date: 20190507 Assignee: Zhejiang Chuangrou Display Technology Co.,Ltd. Assignor: DONGXU OPTOELECTRONIC TECHNOLOGY Co.,Ltd. Contract record no.: X2023110000127 Denomination of invention: Control methods for glass kilns and glass kilns Granted publication date: 20220304 License type: Exclusive License Record date: 20231010 |