Method for cleaning a glass furnace regenerator chamber

Abstract

The application discloses a glass kiln regenerator dredging method, comprising the following steps: firstly, adjusting the to-be-dredged side branch flue damper, opening the fire starting side door hole after completing kiln fire changing and stabilizing the working condition; then, starting the built-in dust cleaning one-key adjustment program of the DCS control system, linkage control of the corresponding small kiln combustion-supporting air valve opening, combustion-supporting air fan frequency and the temporary damper at the dust removal door, accurately maintaining the combustion-supporting air pressure and the kiln pressure in the set range; then, the operator enters the regenerator dredging grid body and leaves before each fire changing period, and the parameter adjustment and kiln reversing are automatically completed by the program; finally, the temporary damper is removed and the initial state of the equipment is restored. Through the airflow linkage control and one-key operation, the method realizes the stable control of the kiln pressure and the combustion-supporting air during the dust cleaning process, effectively reduces the risk of exceeding the environmental protection data and the product failure rate.

Description

Technical Field

[0001] This invention belongs to the technical field of glass production equipment. Specifically, this invention relates to a method for unblocking the regenerator chamber of a glass kiln. Background Technology

[0002] As a key encapsulation material for photovoltaic modules, photovoltaic glass has attracted much attention due to its energy consumption and environmental impact during production. The photovoltaic glass furnace, as the core equipment in production, is increasingly plagued by ash accumulation at the bottom of its heat storage chamber, which has had numerous negative impacts on the entire production system.

[0003] From an energy utilization perspective, ash accumulation at the bottom of the regenerator severely hinders effective heat transfer. The presence of ash is equivalent to adding an insulation layer inside the regenerator, causing a significant amount of heat that should be efficiently recovered to dissipate. Related research data indicates that when the ash thickness reaches a certain level, the heat recovery efficiency of the regenerator decreases by 20%-30%. This not only leads to the kiln consuming more fuel to maintain the required production temperature, increasing energy costs, but also significantly reduces the overall energy utilization rate of the production process.

[0004] Furthermore, the ash removal process itself can cause fluctuations in the process. Currently, ash removal mainly relies on periodically opening the ash removal door at the bottom of the regenerator for manual or mechanical cleaning. After the ash removal door is opened, the kiln pressure and combustion air pressure can only be stabilized by manually or roughly adjusting the frequency of the combustion fan, resulting in extremely imprecise control. This leads to two major problems: first, the combustion air volume and pressure fluctuate drastically, making it impossible to achieve a precise ratio with the fuel, causing fluctuations in the glass melting process conditions and directly increasing the product defect rate; second, the unstable combustion state can easily cause instantaneous pollutant emissions to exceed standards, posing a risk of exceeding environmental data limits.

[0005] This invention provides a method for unblocking the regenerator chamber of a glass furnace, specifically addressing how to achieve precise control of combustion air pressure, flow rate, and furnace pressure to avoid inaccurate combustion air control and furnace pressure fluctuations, thereby reducing the risk of exceeding environmental data standards and lowering product defect rates. Summary of the Invention

[0006] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention provides a method for unblocking the regenerator chamber of a glass kiln, with the purpose of achieving precise control of combustion air pressure, flow rate, and kiln pressure, thereby reducing the risk of exceeding environmental data standards and the product defect rate.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is: a method for unblocking the regenerator chamber of a glass furnace, comprising the following steps: S1. Pre-treatment for unblocking: Adjust the opening of the damper of the branch flue of the heat storage chamber to be unblocked, and after the kiln fire is changed and the kiln pressure and combustion air volume are stabilized, open the upper fire side door of the heat storage chamber to be unblocked. S2. Linkage pressure control and adjustment: Through the one-button ash removal adjustment program built into the DCS control system, the opening of the combustion air valve and the frequency of the combustion air fan of the small furnace corresponding to the heat storage chamber to be cleared are linked and adjusted. At the same time, the opening of the temporary gate at the ash removal door of the heat storage chamber is adjusted to maintain the combustion air pressure and kiln pressure within the preset range. S3. Periodic dredging operation: Operators enter the heat storage chamber to dredge and clean the grid. Before the end of each fire-changing cycle, all operators are evacuated. The opening of the combustion air valve and the frequency of the combustion air fan are restored by the one-button adjustment program for ash removal, and the temporary gate is closed to complete the kiln reversal. S4. Unblocking and finishing: After the heat storage chamber grid is unblocked, remove the temporary gate and restore the sealing structure of the heat storage chamber and the initial opening of the branch flue gate.

[0008] In step S1, 1 to 2 hours before the dredging operation, the damper of the branch flue of the heat storage chamber to be dredged is lowered by 400-800mm, so that the temperature of the corresponding branch flue drops from 500-600℃ to 180-220℃. The waste heat power generation system is notified at the same time, and environmental emission data is monitored and the relevant environmental protection equipment is ensured to operate normally.

[0009] In step S2, when the kiln is switched to the fire-up side of the regenerator to be cleared, the kiln switching system is switched from automatic control to semi-automatic control. Through the one-button adjustment program for ash removal, the combustion air valve of the small furnace corresponding to the regenerator to be cleared is switched to manual control and the opening is adjusted to 0. The opening of the combustion air valve of the other small furnaces in the same chamber is reduced by a preset ratio. At the same time, the opening of the temporary gate is reduced to 1 / 2 of the total opening, the frequency of the combustion air fan is reduced, and the kiln pressure fluctuation is controlled within ±5% of the kiln pressure corresponding to the normal opening.

[0010] In step S2, the standard flow rate of the combustion air is calculated from the operating flow rate using the following formula: Qn=Qv×(1.013+P) / 1.013×273 / (273+T) Where Qn is the standard flow rate, Qv is the operating flow rate, P is the operating gauge pressure in bar, and T is the operating temperature in °C.

[0011] In step S3, the dredging personnel are divided into at least two groups to take turns entering the heat storage chamber to work. They use dredging tools that match the specifications of the grid holes to clean the grid in layers. During the operation, the personnel avoid standing directly below the grid holes.

[0012] In step S3, 2 minutes before the end of each kiln switching cycle, the operators are notified to evacuate the regenerator; 60 seconds before the kiln switching, all unblocking operations are stopped and all openings of the regenerator are closed.

[0013] Throughout the dredging operation, SO2 and NO in the flue gas are monitored in real time. x The desulfurization unit operates synchronously with the emission data, adjusting the desulfurization slurry spray volume based on the online monitoring data. When the emission data exceeds the standard, the temporary gate is immediately closed through the one-button ash removal adjustment program, and the operation continues only after the emission data returns to the standard.

[0014] Step S1 also includes safety preparation steps: Form a special operation team of 6-10 people, equip the workers with high-temperature resistant protective gloves, protective headgear, heat-insulating clothing and dust masks, set up warning signs at the work site, demarcate the work area, and prohibit unauthorized personnel from entering.

[0015] The cleaning cycle of the heat storage chamber is 1-2 days. During the operation, the principle of allowing ventilation through the grid holes is sufficient, and complete cleaning is not required. The opening of the branch flue damper is adjusted by slowly raising or lowering it.

[0016] The preset reduction ratio of the combustion air valve opening of the other small furnaces in the same chamber is 60%, and the reduction ratio is flexibly adjusted according to the real-time kiln pressure; the combustion air pressure is maintained within the range of 1300±100Pa.

[0017] The glass kiln regenerator unblocking method of the present invention achieves precise control of combustion air pressure, flow rate and kiln pressure through airflow control technology, ash removal gate control technology and one-button operation function, avoiding the problems of inaccurate combustion air control and kiln pressure fluctuation, reducing the risk of exceeding environmental data standards and product defect rate. Attached Figure Description

[0018] This manual includes the following figures, which illustrate the following: Figure 1 This is a flowchart of the method for unblocking the heat storage chamber of a glass furnace according to the present invention; Figure 2 This is a schematic diagram of the temporary gate arrangement; Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the temporary gate in the open state; The diagram is marked as follows: 1. Temporary gate; 2. Guide rail; 3. Cable. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figure 1 As shown, this embodiment of the invention provides a method for unblocking the regenerator chamber of a glass furnace, comprising the following steps: S1. Pre-treatment for unblocking: Adjust the opening of the damper of the branch flue of the heat storage chamber to be unblocked, and after the kiln fire is changed and the kiln pressure and combustion air volume are stabilized, open the upper fire side door of the heat storage chamber to be unblocked. S2. Linkage pressure control and adjustment: Through the one-button ash removal adjustment program built into the DCS control system, the opening of the combustion air valve and the frequency of the combustion air fan of the small furnace corresponding to the heat storage chamber to be cleared are linked and adjusted. At the same time, the opening of the temporary gate at the ash removal door of the heat storage chamber is adjusted to maintain the combustion air pressure and kiln pressure within the preset range. S3. Periodic dredging operation: Operators enter the heat storage chamber to dredge and clean the grid. Before the end of each fire-changing cycle, all operators are evacuated. The opening of the combustion air valve and the frequency of the combustion air fan are restored by the one-button adjustment program for ash removal, and the temporary gate is closed to complete the kiln reversal. S4. Unblocking and finishing: After the heat storage chamber grid is unblocked, remove the temporary gate and restore the sealing structure of the heat storage chamber and the initial opening of the branch flue gate.

[0021] Specifically, the glass furnace regenerator cleaning method provided in this embodiment of the invention is applied to the cleaning operation of the regenerator in a photovoltaic glass melting furnace. The glass melting furnace is equipped with a DCS control system (Distributed Control System), multiple regenerators, multiple small furnaces connected to each regenerator, combustion fans, a reversing system, branch flue dampers, a waste heat power generation system, and a flue gas desulfurization device. A temporary damper for heat insulation is provided at the ash removal door of the regenerator. The temporary damper is linked with the combustion fan duct damper and can adjust the opening and closing degree in accordance with the furnace combustion reversing rhythm. The DCS control system has a built-in one-key ash removal adjustment program, which is configured to control the operating frequency of the combustion fans, the opening degree of the combustion fan valves of each small furnace, and the opening and closing degree of the temporary damper, so as to realize the closed-loop control of the furnace pressure and combustion fan parameters.

[0022] In this embodiment of the invention, step S1 above further includes a safety preparation step: Form a specialized work team of 6-10 people, equip the workers with high-temperature resistant protective gloves, protective headgear, heat-insulating clothing, and dust masks, and set up warning signs and demarcate the work area at the work site, prohibiting unauthorized personnel from entering. Specifically, the work team should include at least a central control operation group, an on-site dredging group, a safety monitoring group, and an environmental protection maintenance group, and complete safety and process briefings for all personnel; equip all on-site workers with complete personal protective equipment, including high-temperature resistant protective gloves, protective headgear, heat-insulating clothing, and dust masks; set up conspicuous warning signs such as "High Temperature Danger" and "Caution: Dust Prevention" at the ash removal work site, demarcate a dedicated work area, prohibit unauthorized personnel from entering the work area, and complete safety condition confirmation before work begins.

[0023] In step S1 above, 1 to 2 hours before the dredging operation, the damper of the branch flue of the heat storage chamber to be dredged is lowered by 400-800mm, so that the temperature of the corresponding branch flue drops from 500-600℃ to 180-220℃. The waste heat power generation system is notified at the same time, and environmental emission data is monitored and the relevant environmental protection equipment is ensured to operate normally.

[0024] Specifically, 1-2 hours before the unblocking operation, the damper of the branch flue corresponding to the heat storage chamber to be unblocked is slowly lowered by 400-800mm through the DCS control system, so that the operating temperature of the branch flue drops from 500-600℃ to about 200℃, creating an environment for continuous operation for the workers; the waste heat power generation system operation and maintenance team is notified in advance to monitor the environmental protection data of the flue gas online monitoring system in real time, ensuring that the desulfurization device, boiler induced draft fan and other related environmental protection and waste heat equipment are in normal operating condition; after the kiln has completed the routine fire replacement operation and the air-fuel ratio and kiln pressure parameters in the kiln are stable, the heat storage chamber door on the fire side of the heat storage chamber to be unblocked is opened, and the on-site workers monitor the light transmittance of the heat storage chamber grid, match the corresponding unblocking method according to the degree of grid blockage, and select unblocking tools that match the specifications of the brick grid holes.

[0025] In step S2 above, when the kiln is switched to the fire-up side of the regenerator to be cleared, the kiln switching system is switched from automatic control to semi-automatic control, eliminating the possibility of the system accidentally triggering the switching during operation and improving operational safety. Through the one-button adjustment program for ash removal, the combustion air valve of the small furnace corresponding to the regenerator to be cleared is switched to manual control and the opening is adjusted to 0. The opening of the combustion air valves of the other small furnaces in the same chamber is reduced by a preset ratio. At the same time, the opening of the temporary gate is reduced to 1 / 2 of the total opening, reducing the frequency of the combustion air fan and controlling the kiln pressure fluctuation within ±5% of the kiln pressure corresponding to the normal opening. This can solve the problems of chaotic combustion atmosphere in the kiln caused by drastic kiln pressure fluctuations in traditional operations and reduce the product defect rate.

[0026] Specifically, when the kiln reversing system switches the regenerator to be cleared to the upper fire side (combustion and air supply side), the kiln reversing system is switched from fully automatic control mode to semi-automatic control mode, and the automatic reversing countdown is locked to prevent accidental reversing during operation; the central control operation group executes the following linkage control operations through the one-button ash removal adjustment program of the DCS control system: 1. Select the relevant small furnace connected to the heat storage chamber to be cleared, input the preset combustion air opening ratio parameters of each small furnace, switch the combustion air valve corresponding to the target small furnace to manual control mode, and adjust its opening to 0; reduce the combustion air valve of the other small furnaces in the same chamber by 60% based on the original opening, and the reduction ratio can be flexibly adjusted according to the real-time kiln pressure parameters; 2. The temporary gate at the ash removal door is synchronously controlled to descend to 1 / 2 of the total opening. The temporary gate is made of refractory material with high heat insulation performance. It can be quickly disassembled and the opening can be adjusted. During the operation, the opening and closing height can be adjusted according to the air pressure and kiln pressure parameters monitored in real time by the DCS control system to ensure the stability of the melting process. 3. Simultaneously reduce the operating frequency of the combustion air blower, stabilize the pressure of the main combustion air pipe within the preset range of 1300±100Pa, and effectively control the fluctuation of the kiln pressure within ±5% of the kiln pressure corresponding to the normal opening.

[0027] like Figures 2 to 4 As shown, a pair of parallel guide rails are vertically arranged on both sides of the door opening of the heat storage chamber ash removal door. The guide grooves of the two guide rails are opened opposite each other. The two sides of the temporary gate are correspondingly embedded in the guide grooves of the two guide rails. The guide rails provide guidance and limit for the vertical lifting and lowering movement of the temporary gate. The top of the two guide rails is provided with a disassembly and assembly clearance opening that communicates with the guide groove. The size of the disassembly and assembly clearance opening is adapted to the cross-sectional size of the temporary gate, so that the temporary gate can directly enter or exit the guide groove in the vertical direction from the disassembly and assembly clearance opening. The temporary gate can be quickly assembled and disassembled without disassembling the fixing structure of the guide rail body.

[0028] The temporary gate is connected to a lifting drive mechanism, which includes a cable, a mounting bracket, a fixed pulley, and a winding motor. The mounting bracket is fixed above the ash removal door opening and directly above the two guide rails. The fixed pulley is rotatably mounted on the mounting bracket via a support shaft. The first end of the cable is connected to the top of the temporary gate, and the second end of the cable passes over the groove of the fixed pulley and is fixed and wound onto the drum of the winding motor. The winding motor is electrically connected to the DCS control system and is used to receive opening adjustment commands from the DCS control system. By rotating the drum in both directions to wind and unwind the cable, the temporary gate is driven to rise and fall vertically along the guide rails, thus adjusting the opening degree.

[0029] The aforementioned guiding and driving structure of the temporary gate ensures that it remains vertical during lifting, adjustment, and operation, completely avoiding problems such as inadequate fit and sealing failure caused by gate skew. This effectively reduces the amount of cold air seeping into the ash removal door and the amount of hot air leaking out of the kiln, further stabilizing the kiln pressure and combustion atmosphere, while also reducing kiln heat loss. Furthermore, the lifting drive mechanism, composed of a winding motor, cable, and fixed pulley, enables stepless electric adjustment of the temporary gate's opening degree. The winding motor is electrically connected to the DCS control system, allowing for synchronous linkage with the one-button ash removal adjustment program of this invention. While the DCS system adjusts the opening degree of the combustion air valve and the frequency of the combustion air fan, the opening degree of the temporary gate can be simultaneously adjusted.

[0030] In step S2 above, the standard flow rate of the combustion air is obtained by converting the operating flow rate based on the ideal gas law. The conversion formula is as follows: Qn=Qv×(1.013+P) / 1.013×273 / (273+T) Where Qn is the standard flow rate, which refers to the gas volume flow rate at 0℃ and 1.013 bar standard atmospheric pressure; Qv is the operating flow rate, which refers to the gas volume flow rate under actual working conditions; P is the gauge pressure under operating conditions, in bar. The operating pressure is the actual gas pressure during operation (gauge pressure, which needs to be increased by 1.013 bar to obtain the absolute pressure). T represents the operating temperature in °C, and 273+T converts the Celsius temperature to the thermodynamic temperature.

[0031] During the linkage control process, the DCS control system monitors the kiln pressure parameters in real time. If the kiln pressure is lower than the preset lower limit, a kiln pressure opening compensation operation is performed, which increases the opening of the corresponding combustion air valve by 5 units and repeats the verification of the kiln pressure parameters until the kiln pressure is restored to the preset range. If the kiln pressure is within the preset range, a work permit instruction is issued to the on-site operation team.

[0032] By using the ideal gas law, the conversion of combustion air flow rate from operating condition to standard condition under high temperature conditions is completed, which solves the problems of inaccurate flow measurement and uncontrolled combustion air ratio caused by gas volume expansion under high temperature environment. It realizes precise closed-loop control of combustion air pressure and flow rate, which not only ensures the sufficiency and stability of combustion in the kiln, but also avoids excessive emissions caused by excessive or insufficient combustion air.

[0033] In step S3 above, the dredging workers are divided into at least two groups to take turns entering the heat storage chamber to work. They use dredging tools that match the specifications of the grid holes to clean the grid layer by layer. During the operation, the workers avoid standing directly below the grid holes, thus standardizing the operation process and greatly improving the efficiency of the dredging operation.

[0034] After receiving the work permit instruction, the on-site work team will carry out the phased dredging operation. The effective window for the dredging operation is within a single fire exchange cycle when the heat storage chamber to be dredged is on the fire side. In this embodiment of the invention, the single fire exchange cycle is 20 minutes.

[0035] The on-site dredging team is divided into at least two groups, each with 2-4 people, taking turns to enter the area under the grate arch of the regenerator to carry out dredging operations. One on-site commander is assigned to oversee the entire operation, and one assistant is responsible for changing and passing dredging tools. Workers use dredging tools made of high-temperature resistant, high-strength alloy material to clean the grate in layers. The specific cleaning method is as follows: for the loose slag on the upper layer of the grate, a combination of gentle poking, slow rotation, and frequent pulling is used to break down the slag; for the clumps of slag in the middle layer, the end of the dredging tool is aimed at the center of the clump, and a combination of point poking and rotation is used to break the clumps; for large, unbreakable slag pieces, a hook is used to remove them through the side cleaning door of the regenerator; for the lower passage, the focus is on clearing blockages in the slag to ensure the ventilation performance of the grate openings. During the operation, workers are strictly prohibited from standing directly under the grate openings to avoid personal injury from falling blockages or bricks.

[0036] In step S3 above, 2 minutes before the end of each fire-changing cycle, the central control operation group issues an evacuation order to the on-site operation group. All personnel must immediately stop work and evacuate to a safe area. 60 seconds before the kiln reversal, it must be confirmed that all openings in the regenerator are closed, and all unblocking operations must cease. Reversal operations are strictly prohibited while the regenerator is open. After confirming that all personnel have evacuated and the regenerator is properly sealed, the linkage recovery operation is executed through the one-button ash removal adjustment program. This closes the temporary gate at the ash removal door, restores the initial opening of the combustion air valves of each small furnace and the initial operating frequency of the combustion air fan, and completes the kiln reversal operation on time. If the unblocking operation is not completed within a single fire-changing cycle, steps S2 to S3 are repeated to continue the operation when the kiln is reversed to the fire-up side of the regenerator to be unblocked.

[0037] In step S4 above, throughout the entire dredging operation, the DCS control system monitors SO2 and NO in the flue gas in real time. x The online emission data is monitored, and the desulfurization unit operates synchronously throughout the process. The spray volume of desulfurization slurry is adjusted in real time according to the online monitoring data to ensure that the SO2 outlet concentration meets the standard. Before the operation, the waste heat power generation system is communicated in advance to monitor and record the changes in flue gas parameters. If the emission of tail gas pollutants exceeds the standard, the temporary gate is immediately closed through the one-click ash removal adjustment program to stop the dredging operation. The kiln combustion conditions and desulfurization slurry parameters are adjusted simultaneously to investigate the cause of the exceedance. The dredging operation is resumed after the emission data returns to the standard range.

[0038] After all the cleaning work of the heat regenerator grid is completed, the temporary gate at the ash removal door is removed, and the sealing structure of the heat regenerator ash removal door is restored by using sealing bricks. The gate of the corresponding branch flue of the heat regenerator to be cleaned is slowly restored to the initial opening through the DCS control system. The kiln reversing system is switched back to the fully automatic control mode to complete all cleaning work.

[0039] In this embodiment of the invention, the total cycle of the heat storage chamber unblocking operation is 1-2 days. During the operation, the principle of "ventilation is sufficient for the grid holes, and it is not necessary to force complete unblocking" should be followed to prevent damage to the heat storage chamber structure caused by excessive unblocking and to extend the service life of the equipment. All opening adjustments of the branch flue damper should be performed by slowly raising or lowering the damper to avoid large fluctuations in kiln pressure caused by rapid damper movement. It is strictly forbidden to open any door or opening of the heat storage chamber when it is on the lower fire side (smoke exhaust side) or in the opposite combustion state of the furnace.

[0040] The glass kiln regenerator unblocking method of this invention achieves precise control of combustion air pressure, flow rate, and kiln pressure through airflow control technology, ash removal gate control technology, and one-button operation. This avoids problems such as inaccurate combustion air control and kiln pressure fluctuations, reducing the risk of exceeding environmental data standards and product defect rates. The ash removal gate control technology stabilizes the kiln pressure and combustion atmosphere, reduces heat loss, and improves operational convenience. The one-button operation function avoids operational errors, optimizes the operation process, and makes data control more precise. In terms of ash removal and environmental data control, by optimizing the process and strengthening waste gas treatment, environmental data compliance is ensured, reducing the impact on production and the environment, while also protecting the safety and working environment of operators. Example

[0041] In this embodiment, when cleaning and clearing the bottom of the photovoltaic glass kiln regenerator, the initial cleaning and preparation steps are followed. The opening of the damper on the flue of the regenerator branch is reduced to a suitable level beforehand. The waste heat power generation department is notified, and environmental data is closely monitored to ensure the normal operation of equipment such as desulfurization and boiler induced draft fans. After the fire is switched and the air volume and kiln pressure are stable, the door of the regenerator on the upper fire side is opened, and operators enter the regenerator to monitor the light transmittance of the grid. Based on the degree of blockage, an appropriate unblocking method is selected, and mechanical tools matching the grid hole pattern are used for cleaning.

[0042] Optionally, when switching to the ignition side, the melting personnel notify the on-site cleaning personnel to open the ash removal door. Immediately, using the one-button ash removal adjustment function in the computer control system, the opening of the combustion air of the relevant small furnace is switched to manual and adjusted to 0. The original opening of the combustion air of the small furnace in the same chamber is reduced by about 60% (which can be flexibly adjusted according to the actual kiln pressure). At the same time, the temporary gate of the ash removal door is lowered to half, and the frequency of the combustion air fan is reduced to keep the combustion air pressure within 1300±100Pa, controlling the kiln pressure fluctuation to about 5% of the normal opening, thereby effectively controlling environmental data.

[0043] For example, when clearing the grid, a one-click operation procedure for clearing the grid is set up, and 2-3 people are assigned to enter the regenerator to clean the ash, while 2 people are outside the regenerator to transfer the accumulated ash. High-strength, high-temperature resistant alloy cleaning shovels and matching long-handled operating rods are used for clearing, and slag is removed layer by layer. For the upper layer of loose slag, the operator holds the slag removal rod and slowly inserts it into the slag removal port, using a combination of gentle poking, slow rotation, and frequent pulling to knock off the loose slag on the surface; when encountering the middle layer of clump slag, the end of the slag removal rod is aligned with the center of the clump, and the clump is broken by a combination of point poking and rotation. Large pieces of slag that cannot be broken are hooked out through the side cleaning door with a hook; the lower channel is the focus of cleaning the blocked slag, and the slag removal rod is slowly inserted into the appropriate depth along the channel direction, gently moving up and down to ensure that there is no residual slag in the channel. Two minutes before the end of each fire-changing cycle (20 minutes), the kiln control room notifies the construction personnel to evacuate the inside of the regenerator and close the ash-cleaning door of the regenerator in conjunction with the temporary gate through the one-button ash-cleaning operation procedure to prepare for the reversal.

[0044] Regarding environmental data control, approximately one hour beforehand, the opening of the damper of the gas regenerator branch flue, which is about to be dredged, is lowered to 800mm-400mm to reduce the temperature at the bottom of the regenerator and provide a relatively safe working environment for the workers. During construction, the combustion air valve of the chamber is closed and the air volume of adjacent small furnaces is adjusted using the one-button ash cleaning operation program. The height of the temporary damper is also adjusted to reduce the air intake, precisely controlling the kiln pressure fluctuation to within approximately 5% above or below the normal opening. Before opening the door, the monitoring data changes are communicated with the waste heat power generation system operation and maintenance team, and records are kept. The desulfurization unit is operated synchronously, and the slurry spraying volume is adjusted according to the online monitoring data to ensure the SO2 outlet concentration. If the monitoring equipment shows that the exhaust gas pollutants exceed the standard, the temporary damper is immediately closed using the one-button ash cleaning operation program. The real-time monitoring flue gas emission data is checked, and the dredging operation and desulfurization slurry concentration are adjusted in a timely manner. After replacing the filter element or replenishing the slurry, the system is restarted, the cause is investigated, and the work continues only after the data reaches the standard.

[0045] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A method for unblocking the regenerator chamber of a glass furnace, characterized in that, Includes the following steps: S1. Pre-treatment for unblocking: Adjust the opening of the damper of the branch flue of the heat storage chamber to be unblocked, and after the kiln fire is changed and the kiln pressure and combustion air volume are stabilized, open the upper fire side door of the heat storage chamber to be unblocked. S2. Linkage pressure control and adjustment: Through the one-button ash removal adjustment program built into the DCS control system, the opening of the combustion air valve and the frequency of the combustion air fan of the small furnace corresponding to the heat storage chamber to be cleared are linked and adjusted. At the same time, the opening of the temporary gate at the ash removal door of the heat storage chamber is adjusted to maintain the combustion air pressure and kiln pressure within the preset range. S3. Periodic dredging operation: Operators enter the heat storage chamber to dredge and clean the grid. Before the end of each fire-changing cycle, all operators are evacuated. The opening of the combustion air valve and the frequency of the combustion air fan are restored by the one-button adjustment program for ash removal, and the temporary gate is closed to complete the kiln reversal. S4. Unblocking and finishing: After the heat storage chamber grid is unblocked, remove the temporary gate and restore the sealing structure of the heat storage chamber and the initial opening of the branch flue gate.

2. The method for unblocking the regenerator chamber of a glass furnace according to claim 1, characterized in that, In step S1, 1 to 2 hours before the dredging operation, the damper of the branch flue of the heat storage chamber to be dredged is lowered by 400-800mm, so that the temperature of the corresponding branch flue drops from 500-600℃ to 180-220℃, while monitoring environmental emission data.

3. The method for unblocking the regenerator chamber of a glass furnace according to claim 1, characterized in that, In step S2, when the kiln is switched to the fire-up side of the regenerator to be cleared, the kiln switching system is switched from automatic control to semi-automatic control. Through the one-button adjustment program for ash removal, the combustion air valve of the small furnace corresponding to the regenerator to be cleared is switched to manual control and the opening is adjusted to 0. The opening of the combustion air valve of the other small furnaces in the same chamber is reduced by a preset ratio. At the same time, the opening of the temporary gate is reduced to 1 / 2 of the total opening, the frequency of the combustion air fan is reduced, and the kiln pressure fluctuation is controlled within ±5% of the kiln pressure corresponding to the normal opening.

4. The method for unblocking the regenerator chamber of a glass furnace according to claim 1, characterized in that, In step S2, the standard flow rate of the combustion air is calculated from the operating flow rate using the following formula: Qn=Qv×(1.013+P) / 1.013×273 / (273+T) Where Qn is the standard flow rate, Qv is the operating flow rate, P is the operating gauge pressure in bar, and T is the operating temperature in °C.

5. The method for unblocking the regenerator chamber of a glass furnace according to any one of claims 1 to 4, characterized in that, In step S3, the dredging personnel are divided into at least two groups to take turns entering the heat storage chamber to work. They use dredging tools that match the specifications of the grid holes to clean the grid in layers. During the operation, the personnel avoid standing directly below the grid holes.

6. The method for unblocking the regenerator chamber of a glass furnace according to any one of claims 1 to 4, characterized in that, In step S3, 2 minutes before the end of each kiln switching cycle, the operators are notified to evacuate the regenerator; 60 seconds before the kiln switching, all unblocking operations are stopped and all openings of the regenerator are closed.

7. The method for unblocking the regenerator chamber of a glass furnace according to any one of claims 1 to 4, characterized in that, Throughout the dredging operation, SO2 and NO in the flue gas are monitored in real time. x The desulfurization unit operates synchronously with the emission data, adjusting the desulfurization slurry spray volume based on the online monitoring data. When the emission data exceeds the standard, the temporary gate is immediately closed through the one-button ash removal adjustment program, and the operation continues only after the emission data returns to the standard.

8. The method for unblocking the regenerator chamber of a glass furnace according to any one of claims 1 to 4, characterized in that, Step S1 also includes safety preparation steps: Form a special operation team of 6-10 people, equip the workers with high-temperature resistant protective gloves, protective headgear, heat-insulating clothing and dust masks, set up warning signs at the work site, demarcate the work area, and prohibit unauthorized personnel from entering.

9. The method for unblocking the regenerator chamber of a glass furnace according to any one of claims 1 to 4, characterized in that, The cleaning cycle of the heat storage chamber is 1-2 days. During the operation, the principle of allowing ventilation through the grid holes is sufficient, and complete cleaning is not required. The opening of the branch flue damper is adjusted by slowly raising or lowering it.

10. The method for unblocking the regenerator chamber of a glass furnace according to claim 3, characterized in that, The preset reduction ratio of the combustion air valve opening of the other small furnaces in the same chamber is 60%, and the reduction ratio is flexibly adjusted according to the real-time kiln pressure; the combustion air pressure is maintained within the range of 1300±100Pa.

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