Petroleum coke combustion control method and petroleum coke combustion control system

Abstract

The application discloses a petroleum coke combustion control method and a petroleum coke combustion control system and relates to the technical field of glass. The application optimizes the action sequence among the material bin, the sending tank, the mixer, the conveying gas pipeline, the first fluidizing gas pipeline and the pressure charging pipeline in the feeding module, so that the petroleum coke experiences the process of gradually establishing the airflow, the pressure and the mixing state in the conveying process, the petroleum coke particles can be stably discharged, uniformly conveyed and fully combusted, the residual nickel element in the glass melt is reduced, the formation probability of the fluidized nickel crystal is reduced, the problem that the glass bursts after being tempered due to the petroleum coke as the main fuel is solved, and the safety and the quality of the glass product are improved.

Description

Technical Field

[0001] This invention relates to the field of glass technology, and in particular to a method and system for controlling the combustion of petroleum coke. Background Technology

[0002] Currently, glass furnaces both domestically and internationally primarily use heavy oil / natural gas as their energy source, supplemented by petroleum coke as an auxiliary energy source. Energy accounts for nearly 50% of the glass industry's energy consumption. Due to the continuous rise in international oil prices, some companies have switched to petroleum coke as their primary energy source, with heavy oil / natural gas as an auxiliary energy source. Because petroleum coke contains sulfur and nickel, it severely affects glass quality during use, necessitating an efficient combustion control technology to improve glass quality. Currently, when petroleum coke is used as the main fuel, glass is primarily used in high-end and mid-range construction and deep processing. The main problems with existing finished raw glass sheets are: The glass contains nickel sulfide crystals, which can cause it to crack during or after the tempering process. Current combustion control measures cannot meet the requirements for reducing the nickel content in glass. Summary of the Invention

[0003] The main objective of this invention is to propose a petroleum coke combustion control method and a petroleum coke combustion control system, which aims to solve the problem of glass cracking during or after tempering when petroleum coke is used as the main fuel in the prior art.

[0004] To achieve the above objectives, the present invention proposes a petroleum coke combustion control method, which is applied to a petroleum coke combustion control system. The petroleum coke combustion control system includes a melting furnace and multiple feeding modules respectively arranged on opposite sides of the melting furnace. Each of the aforementioned feeding modules includes: The silo is used to store petroleum coke particles; The sending tank has one end connected to the silo via a feed pipe and the other end connected to the mixer via a discharge pipe. A pulverized coal injection valve is installed on the discharge pipe. The sending tank is also connected to a first fluidizing gas pipeline. A mixer connected to the melting furnace and connected to a gas supply pipeline; A pressurization pipeline, which is connected to both the dispensing tank and the silo; The petroleum coke combustion control method includes the following steps: The control system sends a switching signal; Turn off the multiple feeding modules that are in operation on one side of the furnace; After the feeding module in the working state is shut down for a first time, the gas supply lines of the multiple feeding modules in the standby state on the other side of the furnace are connected and continued for a second time. Connect the first fluidizing gas line and continue for a third time; The pressurization line is connected and maintained for a fourth time. The pulverized coal injection valve is opened to connect the discharge pipe. The petroleum coke particles in the silo are conveyed to the sending tank under pressure. The petroleum coke particles in the sending tank are mixed with fluidizing gas and then conveyed to the mixer under pressure. The mixture is then blown to the melting furnace through the conveying gas pipeline.

[0005] In one embodiment, the gas delivery pipeline includes a delivery sub-line and a purging sub-line, wherein a delivery gas regulating valve is provided on the delivery sub-line and a purging gas regulating valve is provided on the purging sub-line; After the feeding module in the working state is shut down for a first time, the gas supply lines of the multiple feeding modules in the standby state on the other side of the furnace are connected, and the process continues for a second time. After the feeding module, which is in the working state, is shut down for a period of time; Open the conveying gas regulating valves of the multiple feeding modules in standby state on the other side of the furnace to conduct the conveying sub-circuit, and continue for a second time.

[0006] In one embodiment, the pressurization pipeline includes a main pressurization line connected to the sending tank and a sub-pressurization line connected to the silo. A pressurization valve is provided on the main pressurization line and a pressure stabilizing valve is provided on the sub-pressurization line. The step of connecting the pressurization line and continuing for a fourth time includes: Open the pressurizing valve and the pressure regulating valve to connect the main pressurizing circuit and the sub-pressurizing circuit, and continue for a fourth time.

[0007] In one embodiment, a pressure relief sub-circuit is provided on the pressure charging sub-circuit, and a pressure relief valve is provided on the pressure relief sub-circuit; The step of shutting down multiple feeding modules that are in operation on one side of the furnace includes: After the fifth time interval, the pulverized coal valve of the feeding module, which is in the working state, is closed; After the sixth time period, the pressure regulating valve and the pressurizing valve of the feeding module in the working state are closed to block the pressurizing pipeline; After the seventh time period, the fluidizing gas pipeline is sealed and the pressure relief valve is opened; After the eighth time interval, the pressure relief valve is closed and the purge gas regulating valve is opened; After the ninth time interval, the purge gas regulating valve is closed.

[0008] In one embodiment, the petroleum coke combustion control system further includes a controller for acquiring the ignition parameters of each of the feeding modules, the ignition parameters including the pressure values ​​of the silo and the sending tank, and the opening degree of the discharge pipe; After the control system issues the switching signal, the following steps are also included: Multiple feeding modules on the other side of the furnace, which are in standby mode, acquire the heating parameters stored in the controller and adjust the first time, the second time, the third time, and the fourth time according to the heating parameters.

[0009] In one embodiment, pressure sensors are installed in both the silo and the delivery tank. The pressure sensors are used to detect the pressure value in the corresponding silo or delivery tank and send it to the controller. After the step of connecting the pressurization line and continuing for a fourth time, the method further includes: The pressure sensor detects the real-time pressure values ​​in the hopper and the delivery tank, and compares the real-time pressure values ​​with the pressure values ​​in the firing parameters; If the difference between the real-time pressure value and the pressure value within the firing parameters is not within a preset range, the pressurization pipeline will be continuously connected until the difference between the real-time pressure value and the pressure value within the firing parameters is within a preset range, and the fourth time will be adjusted accordingly.

[0010] In one embodiment, the silo is connected to a second fluidizing gas pipeline, which is used to send fluidizing gas to the silo to agitate the petroleum coke particles inside the silo.

[0011] In one embodiment, the petroleum coke combustion control system is further provided with a dust collector connected to the silo.

[0012] The present invention also provides a petroleum coke combustion control system, which is applied to the above-mentioned petroleum coke combustion control method. The petroleum coke combustion control system includes a melting furnace and a plurality of feeding modules respectively arranged on opposite sides of the melting furnace. Each of the aforementioned feeding modules includes: The silo is used to store petroleum coke particles; The sending tank has one end connected to the silo via a feed pipe and the other end connected to the mixer via a discharge pipe. A pulverized coal injection valve is installed on the discharge pipe. The sending tank is also connected to a first fluidizing gas pipeline. A mixer connected to the melting furnace and connected to a gas supply pipeline; A pressurization pipeline is connected to both the dispensing tank and the silo.

[0013] It should be noted that in existing petroleum coke combustion systems, multiple feeding modules are installed on both sides of the furnace. When switching feeding sides is required, multiple valves are usually opened or closed simultaneously to achieve fuel switching. However, due to the characteristics of petroleum coke particles compared to traditional heavy oil or natural gas, such as poor fluidity, uneven particle size, and susceptibility to pressure fluctuations during transportation, the simultaneous operation of multiple feeding modules can cause significant fluctuations in the petroleum coke delivery rate within a short period of time.

[0014] Specifically, under traditional control methods, when the gas delivery pipeline, fluidizing gas pipeline, pressurizing pipeline, and pulverized coal injection valve are opened simultaneously, the pressure inside the feeding tank will change rapidly, making it impossible for the petroleum coke particles to be output stably according to the preset flow rate. This can easily lead to a large amount of instantaneous ejection or insufficient material supply. At the same time, the fuel concentration changes at multiple combustion points simultaneously, which will cause instability in the local combustion environment inside the furnace, preventing the petroleum coke particles from being fully mixed with the combustion-supporting gas.

[0015] When petroleum coke particles cannot burn completely, the nickel they contain cannot be fully oxidized and effectively controlled. Instead, it easily enters the glass melt as an impurity, forming fluidized nickel crystals. During subsequent glass tempering, the phase transition characteristics of these fluidized nickel crystals cause volume changes and localized stress concentrations within the glass, ultimately leading to spontaneous breakage during tempering or use.

[0016] In the technical solution of this invention, the original feeding state is first stopped to gradually stabilize the combustion environment of the melting furnace; then, the conveying gas pipeline is opened in advance to establish a stable airflow in the conveying channel; next, the fluidizing gas pipeline is opened to create a gas-solid mixing environment suitable for conveying petroleum coke particles inside the sending tank; finally, the pressure of the sending tank and silo is increased through the pressurization pipeline, so that the petroleum coke particles can smoothly enter the conveying state. This application optimizes the sequence of actions between the silo, sending tank, mixer, conveying gas pipeline, first fluidizing gas pipeline, and pressurization pipeline in the feeding module, so that the petroleum coke undergoes a process of gradually establishing airflow, pressure, and mixing state during the conveying process. This allows the petroleum coke particles to be stably fed, uniformly conveyed, and fully combusted, thereby reducing the residual nickel element in the glass melt, reducing the probability of fluidized nickel crystal formation, and thus solving the problem of glass cracking after tempering caused by petroleum coke as the main fuel, improving the safety and quality of glass products. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 A flowchart of a petroleum coke combustion control method provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a petroleum coke combustion control system provided in an embodiment of the present invention; Figure 3 This is a circuit diagram of a feeding module provided in an embodiment of the present invention.

[0019] Explanation of icon numbers: 200. Petroleum coke combustion control system; 210. Melting furnace; 100. Feeding module; 10. Hopper; 11. Second fluidizing gas pipeline; 12. Dust collector; 20. Sending tank; 21. Discharge pipe; 22. Pulverized coal injection valve; 23. First fluidizing gas pipeline; 30. Mixer; 31. Conveying gas pipeline; 311. Conveying sub-circuit; 312. Purge sub-circuit; 40. Pressurization pipeline; 41. Main pressurization line; 411. Pressurization valve; 42. Pressurization sub-circuit; 421. Pressure stabilizing valve; 43. Pressure relief sub-circuit; 431. Pressure relief valve.

[0020] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0023] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0024] Currently, with petroleum coke as the primary fuel, glass is mainly used in high-end and mid-range construction and deep processing. The main problems with existing finished raw glass sheets are: The glass contains nickel sulfide crystals, which can cause it to crack during or after the tempering process. Current combustion control measures cannot meet the requirements for reducing the nickel content in glass.

[0025] To address the above problems, this invention proposes a method for controlling the combustion of petroleum coke.

[0026] Please combine Figures 1 to 3 The petroleum coke combustion control method of this embodiment is applied to a petroleum coke combustion control system 200. The petroleum coke combustion control system 200 includes a melting furnace 210 and multiple feeding modules 100 respectively arranged on opposite sides of the melting furnace 210. Each feeding module 100 includes a silo 10, a feeding tank 20, a mixer 30, and a pressurization pipeline 40. The silo 10 is used to store petroleum coke particles. One end of the feeding tank 20 is connected to the silo 10 through a feed pipe, and the other end is connected to the mixer 30 through a discharge pipe 21. A pulverized coal injection valve 22 is provided on the discharge pipe 21. The feeding tank 20 is also connected to a first fluidizing gas pipeline 23. The mixer 30 is connected to the melting furnace 210 and is connected to a conveying gas pipeline 31. The pressurization pipeline 40 is connected to the feeding tank 20 and the silo 10 respectively. The petroleum coke combustion control method includes the following steps: S100: The control system sends a switching signal; S200: Shut down the multiple feeding modules that are in operation on one side of the furnace; S300: After the feeding module in the working state is shut down for a first time, the gas supply lines of the multiple feeding modules in the standby state on the other side of the furnace are connected and continued for a second time. S400: Connect the first fluidizing gas line and continue for a third time; S500: Connect the pressurization line and continue for a fourth time; S600: Open the pulverized coal injection valve to connect the discharge pipe. The petroleum coke particles in the silo are conveyed to the sending tank under pressure. The petroleum coke particles in the sending tank are mixed with fluidizing gas and then conveyed to the mixer under pressure. They are then blown to the melting furnace through the conveying gas pipeline.

[0027] It should be noted that in existing petroleum coke combustion systems, multiple feeding modules 100 are installed on both sides of the furnace. When switching between feeding sides is required, multiple valves are usually opened or closed simultaneously to achieve fuel switching. However, due to the characteristics of petroleum coke particles compared to traditional heavy oil or natural gas, such as poor fluidity, uneven particle size, and susceptibility to pressure fluctuations during transportation, the simultaneous operation of multiple feeding modules 100 can cause significant fluctuations in the petroleum coke delivery rate within a short period of time.

[0028] Specifically, under the traditional control method, when the gas delivery pipeline 31, fluidizing gas pipeline, pressurizing pipeline 40 and pulverized coal injection valve 22 are opened at the same time, the internal pressure of the sending tank 20 will change rapidly, making it impossible for the petroleum coke particles to be output stably according to the preset flow rate, which can easily lead to a large amount of instantaneous injection or insufficient material supply; at the same time, the fuel concentration changes at multiple combustion points at the same time, which will cause the local combustion environment inside the melting furnace 210 to be unstable, making it impossible for the petroleum coke particles to be fully mixed with the combustion-supporting gas.

[0029] When petroleum coke particles cannot burn completely, the nickel they contain cannot be fully oxidized and effectively controlled. Instead, it easily enters the glass melt as an impurity, forming fluidized nickel crystals. During subsequent glass tempering, the phase transition characteristics of these fluidized nickel crystals cause volume changes and localized stress concentrations within the glass, ultimately leading to spontaneous breakage during tempering or use.

[0030] In the technical solution of this invention, the original feeding state is first stopped to gradually stabilize the combustion environment of the melting furnace 210; then, the conveying gas pipeline 31 is opened in advance to establish a stable airflow in the conveying channel; next, the fluidizing gas pipeline is opened to create a gas-solid mixing environment suitable for conveying petroleum coke particles inside the sending tank 20; finally, the pressure of the sending tank 20 and the silo 10 is increased through the pressurization pipeline 40, so that the petroleum coke particles can smoothly enter the conveying state. This application optimizes the action sequence between the silo 10, sending tank 20, mixer 30, conveying gas pipeline 31, first fluidizing gas pipeline 23 and pressurization pipeline 40 in the feeding module 100, so that the petroleum coke undergoes a process of gradually establishing airflow, pressure and mixing state during the conveying process, so that the petroleum coke particles can be stably fed, uniformly conveyed and fully burned, thereby reducing the residual nickel element in the glass melt, reducing the probability of fluidized nickel crystal formation, thereby solving the problem of glass cracking after tempering caused by petroleum coke as the main fuel, and improving the safety and quality of glass products.

[0031] In one embodiment, the gas delivery pipeline includes a delivery sub-line and a purging sub-line, wherein a delivery gas regulating valve is provided on the delivery sub-line and a purging gas regulating valve is provided on the purging sub-line; Step S300 includes: S310: After the feeding module in the working state is shut down for a first time; S320: Open the conveying gas regulating valves of the multiple feeding modules in standby state on the other side of the furnace to make the conveying sub-circuit open, and continue for a second time.

[0032] By further dividing the conveying gas pipeline 31 into a conveying sub-path 311 and a purging sub-path 312, and setting conveying gas regulating valves and purging gas regulating valves respectively, the conveying gas path and the purging gas path can be independently controlled, thereby avoiding the problem of mutual interference between the conveying gas and the pipeline cleaning process in the traditional feeding process. During the feeding switching process, the original working state feeding module 100 is first shut down, and after a buffer period, the conveying gas regulating valve in the standby state feeding module 100 is opened, so that the conveying sub-path 311 establishes a stable conveying airflow in advance, and continues for a second period, so that a suitable airflow environment is formed inside the conveying pipeline before the petroleum coke particles are conveyed. Through the above control method, the sudden conduction of conveying gas can avoid the instantaneous change in pipeline pressure caused by the sudden conduction of conveying gas, which can cause uneven spraying, flow fluctuations or local accumulation of petroleum coke particles in the initial conveying stage, thus improving the continuity and stability of petroleum coke particle conveying. Meanwhile, since the purging sub-circuit 312 is set up independently, after the material supply switch is completed or the material supply is stopped, the purging air can be used to clean the residual petroleum coke particles in the conveying pipeline, so as to avoid particle deposition and blockage of the conveying channel and ensure the reliable operation of the subsequent material supply process.

[0033] In one embodiment, the pressurization pipeline 40 includes a main pressurization pipeline connected to the sending tank 20 and a sub-pressurization pipeline connected to the silo 10. A pressurization valve 411 is provided on the main pressurization pipeline and a pressure stabilizing valve 421 is provided on the sub-pressurization pipeline. Step S500 includes: S510: Open the pressurizing valve and the pressure regulating valve to connect the main pressurizing circuit and the sub-pressurizing circuit, and continue for a fourth time.

[0034] By configuring the pressurization pipeline 40 as a main pressurization line 41 connected to the sending tank 20 and a sub-pressurization line 42 connected to the silo 10, and by respectively configuring a pressurization valve 411 and a pressure stabilizing valve 421, the sending tank 20 and the silo 10 can establish and maintain pressure states according to actual feeding needs. Compared with the traditional method of pressurizing only a single location, this embodiment can simultaneously adjust the pressure relationship between the silo 10 and the sending tank 20, ensuring stable pressure driving conditions for petroleum coke particles during the transfer from the silo 10 to the sending tank 20 and the conveying from the sending tank 20 to the mixer 30. During the feeding start-up phase, by simultaneously opening the pressurization valve 411 and the pressure stabilizing valve 421, the main pressurization line 41 and the sub-pressurization line 42 are connected, allowing the internal pressure of the system to gradually build up, avoiding sudden pressure increases that could cause a large amount of petroleum coke particles to enter the conveying pipeline instantaneously, thus preventing fuel supply fluctuations. Meanwhile, by adjusting the pressure of the silo 10 through the pressure regulating valve 421, pressure fluctuations caused by changes in the number of petroleum coke particles in the silo 10 can be reduced, making the petroleum coke feeding process more uniform and stable.

[0035] In one embodiment, a pressure relief sub-circuit is provided on the pressure charging sub-circuit, and a pressure relief valve is provided on the pressure relief sub-circuit; Step S200 includes: S210: After the fifth time interval, close the pulverized coal valve of the feeding module in the working state; S220: After the sixth time interval, close the pressure regulating valve and the pressurizing valve of the feeding module in the working state to block the pressurizing pipeline; S230: After the seventh time interval, seal the fluidizing gas pipeline and open the pressure relief valve; S240: After the eighth time interval, close the pressure relief valve and open the purge gas regulating valve; S250: After the ninth time interval, close the purge gas regulating valve.

[0036] By setting a pressure relief sub-circuit 43 on the pressurization sub-circuit 42, and coordinating the operation of the pulverized coal injection valve 22, pressure stabilizing valve 421, pressurizing valve 411, pressure relief valve 431, and purge gas regulating valve in a preset time sequence, the shutdown process of the feeding module 100 is transformed from a simple material cutoff process into a controlled pressure release process. Specifically, when shutting down the feeding module 100 in the working state, all gas circuits are not immediately shut off. Instead, the pulverized coal injection valve 22 is closed first to stop petroleum coke particles from entering the discharge pipe 21, preventing the continued supply of fuel to the melting furnace 210 under pressure. Then, the pressure stabilizing valve 421 and pressurizing valve 411 are closed to gradually stop the pressurization pipeline 40 from working, preventing the external gas source from continuously supplementing the system with pressure. After that, the fluidizing gas pipeline is blocked and the pressure relief valve 431 is opened to safely release the residual pressure in the sending tank 20 and related pipelines. After the pressure drops to a suitable level, the purge gas regulating valve is opened to clean the residual petroleum coke particles inside the pipeline. Finally, the purge gas regulating valve is closed to complete the entire shutdown process. This step-by-step shutdown method can effectively avoid sudden pressure changes caused by direct shutdown, reduce the problem of petroleum coke particles remaining, accumulating, or having a reverse impact inside the pipeline, and at the same time ensure a smoother switching process for the feeding module 100, reduce the impact of switching between different feeding modules 100 on the combustion state of the furnace 210, and keep the internal temperature field of the furnace 210 stable.

[0037] In one specific implementation, after the control system issues a switching signal, after 15 seconds (the fifth time), the pulverized coal injection valve 22 of the feeding module 100 in the working state is closed; after 2 seconds (the sixth time), the pressure regulating valve 421 and the pressurizing valve 411 of the feeding module 100 in the working state are closed to block the pressurizing pipeline 40; after 2 seconds (the seventh time), the fluidizing gas pipeline is blocked and the pressure relief valve 431 is opened; after 300 seconds (the eighth time), the pressure relief valve 431 is closed and the purging is started. After 45 seconds (ninth time), the purge gas regulating valve is closed. The feeding module 100 in the working state is closed for 20-27 seconds (first time). Then, the gas supply pipelines 31 of the multiple feeding modules 100 in the standby state on the other side of the melting furnace 210 are connected for 2 seconds (second time). The first fluidizing gas pipeline 23 is connected for 50 seconds (third time). The pressurizing pipeline 40 is connected for 65-70 seconds (fourth time). The pulverized coal injection valve 22 is opened.

[0038] In one embodiment, the petroleum coke combustion control system 200 further includes a controller for acquiring the ignition parameters of each feeding module 100, including the pressure values ​​of the silo 10 and the delivery tank 20, and the opening degree of the discharge pipe 21. Step S100 is followed by: S110: The multiple feeding modules on the other side of the furnace, which are in standby mode, acquire the heating parameters stored in the controller and adjust the first time, the second time, the third time, and the fourth time according to the heating parameters.

[0039] By setting the controller to acquire the ignition parameters of each feeding module 100, and based on actual operating data such as the pressure status of the silo 10 and the sending tank 20, and the opening of the discharge pipe 21, the control time during the feeding switching process is dynamically adjusted, enabling the petroleum coke combustion control process to adapt to the actual needs under different operating conditions. Since different feeding modules 100 may experience equipment wear, changes in pipeline resistance, and changes in the state of petroleum coke particles during long-term operation, the same control time cannot always guarantee the optimal feeding effect. Therefore, this embodiment uses historical stable operating parameters stored in the controller as a reference, allowing the feeding module 100 in standby state to adjust the action time of each stage in advance according to the target working state. For example, when the pressure build-up speed of the sending tank 20 is detected to be slow, the pressurization time can be appropriately extended to allow the system to fully reach a stable pressure; when the conveying airflow is detected to be built up quickly, the conveying air conduction time can be appropriately adjusted to improve switching efficiency. Through this adaptive control method based on actual operating parameters, the problems of insufficient feeding or pressure overshoot caused by fixed-time control can be avoided, making the petroleum coke particle conveying process more precise and stable, and improving the consistency of the combustion process.

[0040] In one embodiment, pressure sensors are installed in both the silo 10 and the delivery tank 20. The pressure sensors are used to detect the pressure value in the corresponding silo 10 or delivery tank 20 and send it to the controller. Step S500 is followed by: S590: The pressure sensor detects the real-time pressure value in the hopper and the delivery tank, and compares the real-time pressure value with the pressure value in the firing parameters; S591: If the difference between the real-time pressure value and the pressure value within the firing parameters is not within a preset range, the pressurization pipeline is continuously connected until the difference between the real-time pressure value and the pressure value within the firing parameters is within a preset range, and the fourth time is adjusted accordingly.

[0041] By installing pressure sensors in the silo 10 and the delivery tank 20, the controller can acquire the pressure status inside the feeding module 100 in real time and compare the real-time pressure value with the target pressure value in the pre-stored firing parameters to determine whether the current pressurization process has reached the stable feeding requirements. When a large deviation is detected between the real-time pressure value and the target pressure value, the controller can keep the pressurization pipeline 40 open and adjust the timing according to the pressure change to gradually bring the silo 10 and the delivery tank 20 to the appropriate working pressure. This closed-loop pressure control method avoids the problem of actual pressure deviating from the set value due to factors such as ambient temperature, petroleum coke particle quantity, and pipeline resistance changes in traditional open-loop control, ensuring that the feeding system is always in a stable pressure state. Stable pressure conditions ensure uniform petroleum coke particle conveying speed, preventing feeding interruption due to insufficient pressure or instantaneous fuel injection due to excessive pressure, thereby improving the uniformity of petroleum coke distribution and combustion completeness after entering the melting furnace 210, reducing nickel residues from incomplete combustion, and improving the quality of glass products. Meanwhile, this implementation method improves the reliability of system operation through real-time detection and feedback adjustment, enabling the equipment to automatically adapt to different operating conditions.

[0042] In one embodiment, the silo 10 is connected to a second fluidizing gas pipeline 11, which is used to send fluidizing gas to the silo 10 to agitate the petroleum coke particles inside the silo 10.

[0043] By further installing a second fluidizing gas pipeline 11 on the silo 10, the fluidizing gas can not only act on the petroleum coke particles in the delivery tank 20, but also directly enter the silo 10 to agitate and fluidize the petroleum coke particles stored in the silo 10. Because petroleum coke particles are prone to accumulation, compaction, and even bridging due to their own gravity during long-term storage, the particle flowability decreases during feeding, leading to discontinuous feeding or fluctuations in the feed rate. This embodiment introduces fluidizing gas into the silo 10, causing the petroleum coke particles inside the silo 10 to be agitated by the airflow, increasing the dispersion between particles, reducing frictional resistance between particles, and allowing the petroleum coke to enter the delivery tank 20 more smoothly. Simultaneously, the particle state in the silo 10 is more uniform, which is beneficial to the subsequent gas-solid mixing process in the delivery tank 20, keeping the concentration of petroleum coke particles delivered to the melting furnace 210 stable. This method can reduce feed fluctuations caused by petroleum coke accumulation, improve fuel supply continuity, make the combustion process more complete and stable, thereby reducing the possibility of nickel entering the glass melt and improving glass quality.

[0044] In one embodiment, the petroleum coke combustion control system 200 is further provided with a dust collector 12 connected to the silo 10.

[0045] By installing a dust collector 12 connected to the silo 10 in the petroleum coke combustion control system 200, dust generated during the storage, agitation, and conveying of petroleum coke particles can be collected and treated in a timely manner, thereby improving the system operating environment and enhancing equipment reliability. Since petroleum coke is a particulate fuel, fine dust is easily generated during pneumatic conveying, pressurization, and fluidized gas agitation. If dust accumulates over a long period, it will not only affect the pressure stability inside the silo 10 and the pressure stability of the delivery tank 20, but may also lead to problems such as pipeline blockage and valve malfunction, thus affecting the accuracy of petroleum coke feeding. This embodiment utilizes the dust collector 12 to filter dust from the gas inside the silo 10, maintaining a suitable gas-solid environment inside the silo 10 and the delivery tank 20, preventing large amounts of dust from entering the melting furnace 210 with the conveying airflow and affecting the combustion state. Simultaneously, the dust collector 12 can reduce dust pollution around the equipment, improving production safety and environmental performance. By keeping the interior of the hopper 10 and the launch tank 20 clean and stable, the continuity and uniformity of the petroleum coke particle conveying process can be further guaranteed, making combustion control more precise, thereby reducing quality defects caused by fuel fluctuations during glass production.

[0046] The present invention also provides a petroleum coke combustion control system 200, applied to the above-mentioned petroleum coke combustion control method. The petroleum coke combustion control system 200 includes a melting furnace 210 and a plurality of feeding modules 100 respectively disposed on opposite sides of the melting furnace 210. Each feeding module 100 includes a silo 10, a feeding tank 20, a mixer 30, and a pressurizing pipeline 40. The silo 10 is used to store petroleum coke particles. One end of the feeding tank 20 is connected to the silo 10 through a feed pipe, and the other end is connected to the mixer 30 through a discharge pipe 21. A pulverized coal injection valve 22 is provided on the discharge pipe 21. The feeding tank 20 is also connected to a first fluidizing gas pipeline 23. The mixer 30 is connected to the melting furnace 210 and is connected to a conveying gas pipeline 31. The pressurizing pipeline 40 is connected to the feeding tank 20 and the silo 10 respectively.

[0047] The above are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made under the concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A method for controlling the combustion of petroleum coke, characterized in that, The invention relates to a petroleum coke combustion control system, which includes a melting furnace and multiple feeding modules respectively disposed on opposite sides of the melting furnace. Each of the aforementioned feeding modules includes: The silo is used to store petroleum coke particles; The sending tank has one end connected to the silo via a feed pipe and the other end connected to the mixer via a discharge pipe. A pulverized coal injection valve is installed on the discharge pipe. The sending tank is also connected to a first fluidizing gas pipeline. A mixer connected to the melting furnace and connected to a gas supply pipeline; A pressurization pipeline, which is connected to both the dispensing tank and the silo; The petroleum coke combustion control method includes the following steps: The control system sends a switching signal; Turn off the multiple feeding modules that are in operation on one side of the furnace; After the feeding module in the working state is shut down for a first time, the gas supply lines of the multiple feeding modules in the standby state on the other side of the furnace are connected and continued for a second time. Connect the first fluidizing gas line and continue for a third time; The pressurization line is connected and maintained for a fourth time. The pulverized coal injection valve is opened to connect the discharge pipe. The petroleum coke particles in the silo are conveyed to the sending tank under pressure. The petroleum coke particles in the sending tank are mixed with fluidizing gas and then conveyed to the mixer under pressure. The mixture is then blown to the melting furnace through the conveying gas pipeline.

2. The petroleum coke combustion control method as described in claim 1, characterized in that, The gas delivery pipeline includes a delivery sub-line and a purging sub-line. A delivery gas regulating valve is installed on the delivery sub-line, and a purging gas regulating valve is installed on the purging sub-line. After the feeding module in the working state is shut down for a first time, the gas supply lines of the multiple feeding modules in the standby state on the other side of the furnace are connected, and the process continues for a second time. After the feeding module, which is in the working state, is shut down for a period of time; Open the conveying gas regulating valves of the multiple feeding modules in standby state on the other side of the furnace to conduct the conveying sub-circuit, and continue for a second time.

3. The petroleum coke combustion control method as described in claim 2, characterized in that, The pressurization pipeline includes a main pressurization line connected to the sending tank and a sub-pressurization line connected to the silo. A pressurization valve is installed on the main pressurization line and a pressure stabilizing valve is installed on the sub-pressurization line. The step of connecting the pressurization line and continuing for a fourth time includes: Open the pressurizing valve and the pressure regulating valve to connect the main pressurizing circuit and the sub-pressurizing circuit, and continue for a fourth time.

4. The petroleum coke combustion control method as described in claim 3, characterized in that, The pressurization sub-circuit is equipped with a pressure relief sub-circuit, and the pressure relief sub-circuit is equipped with a pressure relief valve; The step of shutting down multiple feeding modules that are in operation on one side of the furnace includes: After the fifth time interval, the pulverized coal valve of the feeding module, which is in the working state, is closed; After the sixth time period, the pressure regulating valve and the pressurizing valve of the feeding module in the working state are closed to block the pressurizing pipeline; After the seventh time period, the fluidizing gas pipeline is sealed and the pressure relief valve is opened; After the eighth time interval, the pressure relief valve is closed and the purge gas regulating valve is opened; After the ninth time interval, the purge gas regulating valve is closed.

5. The petroleum coke combustion control method according to any one of claims 1 to 4, characterized in that, The petroleum coke combustion control system also includes a controller, which is used to acquire the ignition parameters of each of the feeding modules. The ignition parameters include the pressure values ​​of the silo and the sending tank, as well as the opening degree of the discharge pipe. After the control system issues the switching signal, the following steps are also included: Multiple feeding modules on the other side of the furnace, which are in standby mode, acquire the heating parameters stored in the controller and adjust the first time, the second time, the third time, and the fourth time according to the heating parameters.

6. The petroleum coke combustion control method as described in claim 5, characterized in that, Pressure sensors are installed in both the silo and the delivery tank. The pressure sensors are used to detect the pressure value in the corresponding silo or delivery tank and send it to the controller. After the step of connecting the pressurization line and continuing for a fourth time, the method further includes: The pressure sensor detects the real-time pressure values ​​in the hopper and the delivery tank, and compares the real-time pressure values ​​with the pressure values ​​in the firing parameters; If the difference between the real-time pressure value and the pressure value within the firing parameters is not within a preset range, the pressurization pipeline will continue to be connected until the difference between the real-time pressure value and the pressure value within the firing parameters is within a preset range, and the fourth time will be adjusted accordingly.

7. The petroleum coke combustion control method according to any one of claims 1 to 4, characterized in that, The silo is connected to a second fluidizing gas pipeline, which is used to send fluidizing gas to the silo to agitate the petroleum coke particles inside the silo.

8. The petroleum coke combustion control method according to any one of claims 1 to 4, characterized in that, The petroleum coke combustion control system is also equipped with a dust collector connected to the silo.

9. A petroleum coke combustion control system, characterized in that, The petroleum coke combustion control system, as described in any one of claims 1 to 8, comprises a melting furnace and a plurality of feeding modules respectively disposed on opposite sides of the melting furnace. Each of the aforementioned feeding modules includes: The silo is used to store petroleum coke particles; The sending tank has one end connected to the silo via a feed pipe and the other end connected to the mixer via a discharge pipe. A pulverized coal injection valve is installed on the discharge pipe. The sending tank is also connected to a first fluidizing gas pipeline. A mixer connected to the melting furnace and connected to a gas supply pipeline; A pressurization pipeline is connected to both the dispensing tank and the silo.

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