CN116675420A - System and method for controlling glass melting furnace erosion - Google Patents
System and method for controlling glass melting furnace erosion Download PDFInfo
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- CN116675420A CN116675420A CN202310791132.XA CN202310791132A CN116675420A CN 116675420 A CN116675420 A CN 116675420A CN 202310791132 A CN202310791132 A CN 202310791132A CN 116675420 A CN116675420 A CN 116675420A
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- pool wall
- temperature sensor
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- 239000011521 glass Substances 0.000 title claims abstract description 94
- 238000002844 melting Methods 0.000 title claims abstract description 61
- 230000008018 melting Effects 0.000 title claims abstract description 61
- 230000003628 erosive effect Effects 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 175
- 239000007788 liquid Substances 0.000 claims abstract description 70
- 239000011449 brick Substances 0.000 claims abstract description 68
- 238000011010 flushing procedure Methods 0.000 claims abstract description 36
- 230000001276 controlling effect Effects 0.000 claims description 28
- 230000001105 regulatory effect Effects 0.000 claims description 24
- 230000001502 supplementing effect Effects 0.000 claims description 13
- 239000002918 waste heat Substances 0.000 claims description 13
- 238000011084 recovery Methods 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 13
- 230000007797 corrosion Effects 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 7
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000009991 scouring Methods 0.000 description 26
- 238000012423 maintenance Methods 0.000 description 4
- 239000006060 molten glass Substances 0.000 description 4
- 230000008439 repair process Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 101001035767 Danio rerio Protein HEG Proteins 0.000 description 1
- 101000872736 Homo sapiens Protein HEG homolog 1 Proteins 0.000 description 1
- 102100034735 Protein HEG homolog 1 Human genes 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/42—Details of construction of furnace walls, e.g. to prevent corrosion; Use of materials for furnace walls
- C03B5/44—Cooling arrangements for furnace walls
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/42—Details of construction of furnace walls, e.g. to prevent corrosion; Use of materials for furnace walls
- C03B5/425—Preventing corrosion or erosion
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to the technical field of glass production, in particular to a system and a method for controlling glass melting furnace erosion, wherein the system comprises a melting furnace body and a cooling device; the melting furnace body comprises a pool wall brick and a cooling cavity arranged inside the pool wall brick; the side wall of the cooling cavity is recessed in an arc shape towards the junction of the glass liquid flushing liquid level in the glass melting furnace and the pool wall bricks, and the cooling device comprises a PLC controller, a cavity temperature sensor, a cooling air blower, a cooling air inlet pipe and a cooling air outlet pipe. The invention has the beneficial effects that: according to the system and the method for controlling the corrosion of the glass melting furnace, disclosed by the invention, the effects that the wall of the tank is not corroded or is less corroded can be achieved by arranging the novel structure of the wall brick of the glass melting furnace with the special cooling chamber and the auxiliary cooling device to realize intelligent digital integrated fine monitoring and accurate control.
Description
The scheme is a divisional application which takes an invention patent with application date of 2021-07-20, application number of 202110816709.9 and name of 'a system for effectively controlling erosion of a glass melting furnace' as a main application.
Technical Field
The invention relates to the technical field of glass production, in particular to a system and a method for effectively controlling glass melting furnace erosion.
Background
In glass plants, the furnace is the heart of glass production, and the two side walls of the melting part of the furnace are the most central components of the heart. The length of the operation production period of one glass production line has the most direct relation with the service life of a kiln, and the length of the operation production period is further related to the production and manufacturing cost. The service life of the kiln is related to the burning loss, erosion and scouring degree of the key parts of heavy points such as pool walls, arches, breast walls, front face hanging walls, rear gable walls, neck hanging walls and the like, and particularly the erosion scouring speed of the pool walls is a critical factor related to the service life of the kiln. Therefore, reducing or slowing down pool wall erosion and scouring is a very important technical task for glass plants and is a worldwide technical challenge.
At present, the same technical problem exists in the aspect of glass furnace tank wall bricks in the international or national fields, namely the corrosion of the junction of the tank wall bricks and the liquid surface line of molten glass is quicker under the normal production condition, particularly the corrosion of the tank wall bricks before and after a hot spot is particularly quick and serious, even if the subsequent three-four binding brick maintenance is carried out, more furnaces finally have to be put on water to stop production and repair.
In the prior art, most enterprises are most common habit measures for slowing down the erosion of the pool wall bricks of the glass kiln: a cooling tuyere is additionally arranged at the position of a liquid surface line on the outer side of the pool wall brick to reduce the temperature of the upper half part of the pool wall brick; at present, a large fan is generally used for uniformly supplying air, and a branch pipe air valve is used for manually controlling local air quantity. The measures are rough and not fine enough, erosion and scouring cannot be accurately and effectively controlled, and the problems cannot be fundamentally solved. Although the erosion and scouring speed can be slowed down, bricks are bound for at least three to four times in one kiln period, and the service life of the kiln can only reach about 8 to 12 years at most.
And secondly, after the erosion and the scouring of the pool wall are serious, a cooling water drum is closely inserted into the inner side surface of the pool wall brick so as to block glass liquid and slow down the erosion and the scouring of the pool wall brick. The measure can naturally slow down erosion and scouring, but has the advantages of extremely high safety risk, high operation difficulty and high energy consumption, and is not dare to be easily adopted by common factories. In general, expert scholars do not advocate nor support.
The third measure is to invent the 'erosion-resistant glass melting furnace melting part pool wall brick' (patent number: ZL 201410753438.7), and to reserve a medium channel in the upper half of the pool wall brick to slow down and prevent the erosion and scouring of the molten glass in high temperature melting state. The invention has novel thought and creativity. However, although the invention can improve the cooling efficiency and slow down erosion and scouring, the invention lacks complete series of devices, accurate monitoring and accurate control.
And fourthly, reserving a groove at the inner side of the upper part of the pool wall brick, embedding a layer of high-zirconium plate for preventing the erosion and the scouring of the pool wall by the high-temperature molten glass. However, the high zirconium plate is inlaid on the inner side of the pool wall, so that the maintenance difficulty is high, the risk is high, the operation is difficult, the pollution to glass is easy, and the glass quality is affected during normal production.
The invention aims to develop a series of anti-erosion scouring devices and intelligent digital integrated accurate process technical methods, which have the advantages of less investment, low running cost, convenient maintenance, simple operation, fine monitoring, accurate control, good anti-erosion scouring effect, and capability of ensuring synchronous anti-erosion scouring of the hot spot area range and the first pair and the last pair of small furnace pool walls.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the system for effectively controlling the corrosion of the glass melting furnace is accurate in control and good in corrosion resistance and scouring effect.
In order to solve the technical problems, the invention adopts the following technical scheme: a system for effectively controlling glass melting furnace erosion is provided, comprising a melting furnace body and a cooling device; the melting furnace body comprises a pool wall brick and a cooling cavity arranged inside the pool wall brick;
the side wall of the cooling cavity is recessed in an arc shape towards the junction of the glass liquid flushing liquid level in the glass melting furnace and the pool wall brick, the distance between the side wall of the cooling cavity on the plane of the glass liquid flushing liquid level and the inner side wall of the pool wall brick is nearest, the plane of the glass liquid flushing liquid level is taken as a boundary to the upper side and the lower side, and the distance between the side wall of the cooling cavity and the inner side wall of the pool wall brick is gradually increased; the cross section of each height of the cooling chamber in the horizontal direction takes the plane of the glass liquid flushing liquid level as a boundary to the upper side and the lower side, and the cross section area of the cross section is gradually reduced;
the cooling device comprises a PLC controller, a chamber temperature sensor, a cooling air blower, a cooling air inlet pipe and a cooling air outlet pipe;
the cooling chamber is characterized in that the chamber temperature sensor is arranged on the side wall, close to one side of the glass liquid flushing liquid level, inside the cooling chamber, the cooling air blower is arranged on the cooling air inlet pipe, the cooling air inlet pipe is connected with the upper portion of the cooling chamber, the cooling air outlet pipe is connected with the lower portion of the cooling chamber, and the PLC, the chamber temperature sensor and the cooling air blower are electrically connected with each other.
The invention has the beneficial effects that: the system for effectively controlling the corrosion of the glass melting furnace can realize intelligent digital integrated fine monitoring and accurate control by arranging the novel structure of the glass melting furnace pool wall brick with the special cooling chamber and the auxiliary cooling device, so that the effect that the pool wall is not corroded or is less corroded can be achieved; the invention controls the erosion and the scouring of the pool wall bricks, so that the pollution caused by the erosion and the scouring of the pool wall bricks into glass liquid is greatly reduced, the invention also greatly improves the quality and the yield of glass, and is also beneficial to the reduction of the cost of the glass; the invention can also greatly improve the service life of the glass melting furnace tank wall, ensure that the tank wall bricks are not corroded basically in a kiln period of 8-14 years, are basically intact, prolong the kiln life and save maintenance and cold repair cost; the invention also feeds the hot air waste heat of the cooling pool wall into the combustion-supporting air system, thereby realizing waste heat utilization, saving resources, reducing waste and protecting environment.
Drawings
FIG. 1 is a schematic diagram of a system for effectively controlling glass melting furnace erosion in accordance with an embodiment of the present invention;
description of the reference numerals:
1. pool wall bricks; 2. chi Dezhuan; 3. glass liquid; 4. a cooling chamber; 41. a chamber temperature sensor; 5. a cooling air inlet pipe; 51. a first regulating valve; 52. a first pressure gauge; 6. a cooling air outlet pipe; 61. a second regulating valve; 62. a second pressure gauge; 7. a cooling air blower; 71. a frequency converter; 8. a hot air cache box; 81. air supplementing port; 9. a combustion fan; 10. a regenerator; 11. and a PLC controller.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
The invention provides a system for effectively controlling glass melting furnace erosion, which comprises a melting furnace body and a cooling device; the melting furnace body comprises a pool wall brick and a cooling cavity arranged inside the pool wall brick;
the side wall of the cooling cavity is recessed in an arc shape towards the junction of the glass liquid flushing liquid level in the glass melting furnace and the pool wall brick, the distance between the side wall of the cooling cavity on the plane of the glass liquid flushing liquid level and the inner side wall of the pool wall brick is nearest, the plane of the glass liquid flushing liquid level is taken as a boundary to the upper side and the lower side, and the distance between the side wall of the cooling cavity and the inner side wall of the pool wall brick is gradually increased; the cross section of each height of the cooling chamber in the horizontal direction takes the plane of the glass liquid flushing liquid level as a boundary to the upper side and the lower side, and the cross section area of the cross section is gradually reduced;
the cooling device comprises a PLC controller, a chamber temperature sensor, a cooling air blower, a cooling air inlet pipe and a cooling air outlet pipe;
the cooling chamber is characterized in that the chamber temperature sensor is arranged on the side wall, close to one side of the glass liquid flushing liquid level, inside the cooling chamber, the cooling air blower is arranged on the cooling air inlet pipe, the cooling air inlet pipe is connected with the upper portion of the cooling chamber, the cooling air outlet pipe is connected with the lower portion of the cooling chamber, and the PLC, the chamber temperature sensor and the cooling air blower are electrically connected with each other.
Use of the above system: the glass liquid flushing liquid level is the most serious corresponding level of glass liquid flushing, and the cooling chamber is manufactured according to the flushing curve from the melting furnace charging port to the cooling chamber structure of the clarifying part pool wall brick. When the temperature and the flow rate of the glass liquid corresponding to the inner side of the pool wall brick change, the temperature sensor embedded in the cooling cavity in the pool wall brick can timely transmit temperature information to the PLC, and the PLC increases or reduces cooling air quantity and pressure through the cooling air blower to stabilize the constant temperature of the inner side of the pool wall brick of the unit and ensure that the pool wall is not eroded and flushed. The cooling chamber of each pool wall brick can automatically and accurately adjust the air quantity according to the monitored corresponding temperature, and the temperature of the cooling chamber is always kept constant, so that the erosion and scouring of the inner surface of the pool wall brick by high-temperature molten glass are avoided.
As is clear from the description, the outer side of the upper end of the pool wall brick of the glass melting furnace imitates the erosion and scouring curve of the pool wall, a cooling cavity with a large upper cavity and gradually shrinking and reducing downwards is prepared, the cooling cavity structure from the melting furnace feed port to the clarifying part pool wall brick is manufactured according to the erosion and scouring curve, and the cavity size is determined by the erosion and scouring degree and the cooling strength. The erosion scouring curve can be designed according to the actual erosion scouring curve of the erosion scouring of the wall bricks of the cold repair pool of the kiln according to the size of the kiln, different fuels and glass varieties and by combining with the numerical simulation of a computer. The effect that the pool wall is not eroded or is eroded little can be achieved.
Further, in the system for effectively controlling corrosion of the glass melting furnace, three chamber temperature sensors are arranged on the upper side wall, the middle side wall and the lower side wall of the cooling chamber, which are close to one side of the glass liquid flushing liquid level.
As can be seen from the above description, the cooling condition of the cooling chamber can be obtained more accurately by providing the three chamber temperature sensors, so that the PLC controller controls the air supply size of the cooling air blower.
Further, in the system for effectively controlling erosion of the glass melting furnace, the chamber temperature sensor is a thermocouple.
Further, in the system for effectively controlling corrosion of the glass melting furnace, the cooling device further comprises a frequency converter connected with the PLC, and the frequency converter is used for adjusting power of the cooling air blower.
Further, in the system for effectively controlling corrosion of the glass melting furnace, the system further comprises a waste heat recovery device, wherein the waste heat recovery device comprises a hot air cache box, a combustion-supporting fan and a regenerator which are connected in sequence in a pipeline manner; and the side wall of the hot air cache box is provided with an insulating layer.
The hot air inlet of the hot air buffer box is communicated with the cooling air outlet pipe, the hot air outlet of the hot air buffer box is communicated with the regenerator, the combustion-supporting fan is arranged on a pipeline between the hot air buffer box and the regenerator, and the combustion-supporting fan is electrically connected with the PLC.
As can be seen from the description, the invention feeds the hot air waste heat of the cooling tank wall into the combustion air system, thereby realizing waste heat utilization, saving resources, reducing waste and protecting environment.
Further, in the system for effectively controlling corrosion of the glass melting furnace, the surface of the hot air buffer tank is provided with the air supplementing port, the air supplementing port is provided with the air supplementing regulating valve, the buffer tank temperature sensor and the buffer tank pressure gauge are arranged inside the hot air buffer tank, and the air supplementing regulating valve, the buffer tank temperature sensor and the buffer tank pressure gauge are respectively electrically connected with the PLC.
As can be seen from the above description, the air supply adjusting valve and the buffer box temperature sensor are respectively electrically connected with the PLC controller, when the pressure of the hot air buffer container is reduced, the temperature is reduced, and the waste heat and the air quantity thereof are insufficient, the PLC controller automatically adjusts and opens the air supply opening and adjusts the air supply adjusting valve, and starts to supply the air quantity into the hot air buffer container.
Further, in the system for effectively controlling corrosion of the glass melting furnace, the cooling air inlet pipe is provided with the first regulating valve and the first air pipe temperature sensor, the cooling air outlet pipe is provided with the second regulating valve and the second air pipe temperature sensor, and the first regulating valve, the second regulating valve, the first air pipe temperature sensor and the second air pipe temperature sensor are respectively electrically connected with the PLC controller.
Further, in the system for effectively controlling corrosion of the glass melting furnace, the cooling air inlet pipe is provided with the first pressure gauge, the cooling air outlet pipe is provided with the second pressure gauge, and the first pressure gauge and the second pressure gauge are respectively and electrically connected with the PLC.
As can be seen from the description, the cooling air inlet pipe is provided with the first pressure gauge, the first regulating valve and the first air pipe temperature sensor, and the cooling air outlet pipe is provided with the second pressure gauge, the second regulating valve and the second air pipe temperature sensor. The temperature sensor and the pressure gauge are used for acquiring temperature information and sending the temperature information to the PLC controller to control the regulating valve, so that the control of the system is more accurate.
Example 1
Referring to FIG. 1, a system for effectively controlling glass melting furnace erosion includes a melting furnace body and a cooling device; the melting furnace body is internally provided with glass liquid 3, and comprises a pool bottom brick 2, a pool wall brick 1 and a cooling cavity 4 arranged inside the pool wall brick 1;
the side wall of the cooling chamber 4 is recessed in an arc shape towards the junction of the glass liquid flushing liquid level in the glass melting furnace and the pool wall brick 1, the distance between the side wall of the plane where the glass liquid flushing liquid level is located and the inner side wall of the pool wall brick 1 is nearest, the plane where the glass liquid flushing liquid level is located is taken as a boundary to the upper side and the lower side, and the distance between the side wall of the cooling chamber 4 and the inner side wall of the pool wall brick 1 is gradually increased; the cross section of each height of the cooling chamber 4 in the horizontal direction is gradually reduced in cross section from the plane of the glass liquid flushing liquid level to the upper and lower sides;
the cooling device comprises a PLC (programmable logic controller) 11, a chamber temperature sensor 41, a cooling air blower 7, a cooling air inlet pipe 5 and a cooling air outlet pipe 6;
the chamber temperature sensor 41 is arranged on the side wall of the cooling chamber 4, which is close to one side of the glass liquid flushing liquid level, the cooling air blower 7 is arranged on the cooling air inlet pipe 5, the cooling air inlet pipe 5 is connected with the upper part of the cooling chamber 4, the cooling air outlet pipe 6 is connected with the lower part of the cooling chamber 4, and the PLC 11, the chamber temperature sensor 41 and the cooling air blower 7 are electrically connected with each other.
In the system for effectively controlling glass melting furnace erosion, three chamber temperature sensors 41 are provided, and are respectively disposed on the upper side wall, the middle side wall and the lower side wall of the cooling chamber 4, which are close to the side of the glass liquid flushing liquid level. The chamber temperature sensor 41 is a thermocouple. The cooling device further comprises a frequency converter 71 connected with the PLC 11, wherein the frequency converter 71 is used for adjusting the power of the cooling air blower.
The outer side of the upper end of a pool wall brick of the glass melting furnace is imitated to follow a pool wall erosion flushing curve, a cooling cavity with a large upper cavity and gradually shrinking downwards is prepared, wherein the glass liquid flushing liquid level is the most serious plane of glass liquid erosion flushing, the structure from a melting furnace charging port to a clarifying part pool wall brick cooling cavity is manufactured according to the erosion flushing curve, and the cavity size is determined by the erosion flushing degree and cooling strength; the erosion scouring curve is an actual erosion scouring curve which is eroded and scoured according to the size of the melting furnace, different fuels, glass varieties and the wall bricks of the cold repair pool of the furnace each time, and is designed by combining with computer numerical simulation.
In the invention, a cooling air inlet pipe and a cooling air outlet pipe are pre-buried in a cavity of a pool wall brick, one end of the cooling air inlet pipe is connected with the cooling cavity, and the other end is connected with a cooling fan. The upper pipe is used for feeding cooling air, the lower pipe is used for discharging cooled hot air, the outer wall of the cooling chamber is a vertical plane, and the inner wall is a slope surface. Three thermocouple temperature measuring points are pre-buried in the cavity of the pool wall brick, the cooling fan is connected with a frequency converter, and the power of the cooling fan can be adjusted through the frequency converter, so that the air quantity can be increased or reduced, and the cooling effect can be adjusted; the frequency converter is automatically calculated by the PLC according to the temperature measured in the cavity of the pool wall brick, the frequency converter is adjusted, and the frequency converter is used for adjusting the cooling fan.
Example 2
Referring to FIG. 1, a system for effectively controlling glass melting furnace erosion includes a melting furnace body and a cooling device; the melting furnace body comprises a pool wall brick 1 and a cooling cavity 4 arranged inside the pool wall brick 1;
the side wall of the cooling chamber 4 is recessed in an arc shape towards the junction of the glass liquid flushing liquid level in the glass melting furnace and the pool wall brick 1, the distance between the side wall of the plane where the glass liquid flushing liquid level is located and the inner side wall of the pool wall brick 1 is nearest, the plane where the glass liquid flushing liquid level is located is taken as a boundary to the upper side and the lower side, and the distance between the side wall of the cooling chamber 4 and the inner side wall of the pool wall brick 1 is gradually increased; the cross section of each height of the cooling chamber 4 in the horizontal direction is gradually reduced in cross section from the plane of the glass liquid flushing liquid level to the upper and lower sides;
the cooling device comprises a PLC (programmable logic controller) 11, a chamber temperature sensor 41, a cooling air blower 7, a cooling air inlet pipe 5 and a cooling air outlet pipe 6;
the chamber temperature sensor 41 is arranged on the side wall of the cooling chamber 4, which is close to one side of the glass liquid flushing liquid level, the cooling air blower 7 is arranged on the cooling air inlet pipe 5, the cooling air inlet pipe 5 is connected with the upper part of the cooling chamber 4, the cooling air outlet pipe 6 is connected with the lower part of the cooling chamber 4, and the PLC 11, the chamber temperature sensor 41 and the cooling air blower 7 are electrically connected with each other.
The system for effectively controlling the corrosion of the glass melting furnace further comprises a waste heat recovery device, wherein the waste heat recovery device comprises a hot air cache box 8, a combustion-supporting fan 9 and a regenerator 10 which are connected in sequence in a pipeline manner;
the hot air inlet of the hot air buffer box 8 is communicated with the cooling air outlet pipe 6, the hot air outlet of the hot air buffer box 8 is communicated with the regenerator 10, the combustion-supporting fan 9 is arranged on a pipeline between the hot air buffer box 8 and the regenerator 10, and the combustion-supporting fan 9 is electrically connected with the PLC 11.
The surface of hot-blast buffer memory case 8 is equipped with air supply mouth 81, be equipped with the air supply governing valve on the air supply mouth 81, the inside buffer memory case temperature sensor and the buffer memory case manometer that are equipped with of hot-blast buffer memory case 8, air supply governing valve, buffer memory case temperature sensor and buffer memory case manometer are connected with PLC controller 11 electricity respectively.
The cooling air inlet pipe 5 is provided with a first regulating valve 51 and a first air pipe temperature sensor, the cooling air outlet pipe 6 is provided with a second regulating valve 61 and a second air pipe temperature sensor, and the first regulating valve 51, the second regulating valve 61, the first air pipe temperature sensor and the second air pipe temperature sensor are respectively electrically connected with the PLC 11.
The cooling air inlet pipe 5 is provided with a first pressure gauge 52, the cooling air outlet pipe 6 is provided with a second pressure gauge 62, and the first pressure gauge 52 and the second pressure gauge 62 are respectively and electrically connected with the PLC 11.
As can be seen from the above description, the cooling air outlet pipe 6 of the cooling chamber of the pool wall brick 1 is connected to one side of a hot air buffer box 8, and the hot air buffer container has the functions of pressure resistance and temporary hot air storage, also has the functions of saving waste heat without loss, and playing a role in buffering waste heat. The buffer container is provided with a pressure gauge, a temperature sensor, an air inlet, an air outlet and an air supplementing port, and the PLC controls air supplementing of the air supplementing port through an air valve positioner.
Above-mentioned hot-blast buffer memory case 8 one end is connected with the cooling air outlet pipe, and the other end is connected with combustion-supporting fan 9, the surface of hot-blast buffer memory case 8 is equipped with the air supply mouth, be equipped with the air supply governing valve on the air supply mouth, hot-blast buffer memory incasement portion is equipped with buffer memory case temperature sensor and buffer memory case manometer, air supply governing valve, buffer memory case temperature sensor and buffer memory case manometer are connected with the PLC controller electricity respectively.
The hot air in the hot air buffer tank is transmitted to a frequency converter for adjusting the combustion-supporting fan through a computer and a PLC controller, and the frequency converter adjusts the combustion-supporting fan to feed the hot air containing waste heat into the heat accumulation chamber.
The invention is provided with a first pressure gauge 52, a first regulating valve 51 and a first air pipe temperature sensor on a cooling air inlet pipe 5, and a second pressure gauge 62, a second regulating valve 61 and a second air pipe temperature sensor on a cooling air outlet pipe 6. The temperature sensors on the upper cooling air inlet pipe 5 and the cooling air outlet pipe 6 are temperature sensors with the precision of +/-1 ℃, and the temperature sensors and the pressure gauge are used for acquiring temperature information and sending the temperature information to the PLC, so that the control of the system is more accurate.
The system is arranged at one side of the glass kiln, two variable-frequency cooling fans can be arranged in the system, one variable-frequency cooling fan is used for one standby, and two variable-frequency combustion-supporting fans are also arranged in the system, and one variable-frequency combustion-supporting fan is used for one standby. The temperature of the cooling cavity of the pool wall brick, the temperature and the pressure of the air inlet pipe, the air valve, the variable-frequency cooling fan, the pressure and the temperature of the air outlet pipe, the air supplementing valve and the combustion-supporting variable-frequency fan are all controlled by a networking computer and a PLC controller in a centralized and unified way.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.
Claims (7)
1. A system for controlling glass melting furnace erosion, comprising a melting furnace body and a cooling device; the melting furnace body comprises a pool wall brick and a cooling cavity arranged inside the pool wall brick;
the side wall of the cooling cavity is recessed in an arc shape towards the junction of the glass liquid flushing liquid level in the glass melting furnace and the pool wall brick, the distance between the side wall of the cooling cavity on the plane of the glass liquid flushing liquid level and the inner side wall of the pool wall brick is nearest, the plane of the glass liquid flushing liquid level is taken as a boundary to the upper side and the lower side, and the distance between the side wall of the cooling cavity and the inner side wall of the pool wall brick is gradually increased; the cross section of each height of the cooling chamber in the horizontal direction takes the plane of the glass liquid flushing liquid level as a boundary to the upper side and the lower side, and the cross section area of the cross section is gradually reduced;
the cooling device comprises a PLC controller, a chamber temperature sensor, a cooling air blower, a cooling air inlet pipe and a cooling air outlet pipe;
the cooling air blower is arranged on a cooling air inlet pipe, the cooling air inlet pipe is connected with the upper part of the cooling chamber, the cooling air outlet pipe is connected with the lower part of the cooling chamber, and the PLC, the chamber temperature sensor and the cooling air blower are electrically connected with each other;
the three chamber temperature sensors are respectively arranged on the upper side wall, the middle side wall and the lower side wall of the cooling chamber, which are close to one side of the glass liquid flushing liquid level.
2. The system for controlling glass melting furnace erosion of claim 1 wherein the cooling device further comprises a frequency converter connected to the PLC controller, the frequency converter for regulating the power of the cooling fan.
3. The system for controlling glass melting furnace erosion of claim 1, further comprising a waste heat recovery device comprising a hot air cache tank, a combustion fan and a regenerator connected in turn by a pipeline;
the hot air inlet of the hot air buffer box is communicated with the cooling air outlet pipe, the hot air outlet of the hot air buffer box is communicated with the regenerator, the combustion-supporting fan is arranged on a pipeline between the hot air buffer box and the regenerator, and the combustion-supporting fan is electrically connected with the PLC.
4. The system for controlling glass melting furnace erosion according to claim 3, wherein a wind supplementing port is arranged on the surface of the hot air buffer tank, a wind supplementing regulating valve is arranged on the wind supplementing port, a buffer tank temperature sensor and a buffer tank pressure gauge are arranged inside the hot air buffer tank, and the wind supplementing regulating valve, the buffer tank temperature sensor and the buffer tank pressure gauge are respectively electrically connected with the PLC.
5. The system for controlling glass melting furnace erosion according to claim 1, wherein a first regulating valve and a first air duct temperature sensor are arranged on the cooling air inlet duct, a second regulating valve and a second air duct temperature sensor are arranged on the cooling air outlet duct, and the first regulating valve, the second regulating valve, the first air duct temperature sensor and the second air duct temperature sensor are respectively electrically connected with the PLC.
6. The system for controlling glass melting furnace erosion according to claim 1, wherein a first pressure gauge is arranged on the cooling air inlet pipe, a second pressure gauge is arranged on the cooling air outlet pipe, and the first pressure gauge and the second pressure gauge are respectively and electrically connected with the PLC.
7. A method of controlling glass melting furnace erosion using the system for controlling glass melting furnace erosion of any of claims 1-6, comprising the steps of:
when the temperature and the flow rate of the glass liquid corresponding to the inner side of the pool wall brick change, the temperature information of the chamber temperature sensor embedded in the cooling chamber in the pool wall brick can be timely transmitted to the PLC, the PLC increases or reduces the cooling air quantity and the pressure through the cooling air blower, the inner side temperature of the pool wall brick of the unit is stabilized to be constant, and the pool wall is ensured not to be corroded and eroded.
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| CN202310791132.XA CN116675420A (en) | 2021-07-20 | 2021-07-20 | System and method for controlling glass melting furnace erosion |
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| CN202310791132.XA CN116675420A (en) | 2021-07-20 | 2021-07-20 | System and method for controlling glass melting furnace erosion |
| CN202110816709.9A CN113354258B (en) | 2021-07-20 | 2021-07-20 | System for effectively controlling glass melting furnace erosion |
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| CN202110816709.9A Active CN113354258B (en) | 2021-07-20 | 2021-07-20 | System for effectively controlling glass melting furnace erosion |
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| CN113845292B (en) * | 2021-11-08 | 2023-08-11 | 中国建材国际工程集团有限公司 | Tank wall cooling system for ultra-white glass production and glass melting furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4039601A1 (en) * | 1990-12-12 | 1992-06-17 | Sorg Gmbh & Co Kg | MELTING TUB FOR GLASS TUBE OVEN WITH PALISADES STONES AND OPERATING METHOD FOR THIS |
| CN201458952U (en) * | 2009-08-11 | 2010-05-12 | 中国洛阳浮法玻璃集团有限责任公司 | Cooling protection device for glass furnace pool wall |
| CN202671390U (en) * | 2012-07-07 | 2013-01-16 | 蚌埠玻璃工业设计研究院 | Erosion slowing device for pool wall of flat glass melting kiln |
| CN103951162B (en) * | 2014-05-10 | 2017-06-13 | 蚌埠玻璃工业设计研究院 | A kind of easy attack sites cooling device of Flat Glass Furnace pool wall |
| CN110028227A (en) * | 2019-04-23 | 2019-07-19 | 蚌埠中光电科技有限公司 | A kind of glass furnace tank block automation integrative cooling system |
| CN215480516U (en) * | 2021-07-20 | 2022-01-11 | 福州新福兴玻璃科技有限公司 | System for effectively controlling erosion of glass melting furnace |
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