Coke oven heat supply adjusting method and device with heating main pipe adjusting and branch pipe adjusting functions

Abstract

The invention provides a coke oven heat supply adjusting device with heating main pipe adjusting and branch pipe adjusting functions. The coke oven heat supply adjusting device comprises a heating gas main pipe adjusting unit, a single-combustion-chamber gas branch pipe adjusting unit, a coke oven automatic heating model, a heating gas main pipe and a coke oven combustion chamber, wherein the heating gas main pipe adjusting unit is connected with one port of the heating gas main pipe; the heating gas main pipe is connected with a corresponding coke oven combustion chamber through an independent heating gas branch pipe, heating gas is input into the other port, and the output end is connected with the heating gas branch pipe; the heating coal gas branch pipe is connected with the single-combustion-chamber heating control subsystem; wherein the heating gas header pipe adjusting unit and the single combustion chamber gas branch pipe adjusting unit are connected with the coke oven automatic heating model. Meanwhile, the invention further provides a method of the device, mutual disturbance of adjustment of the main pipe and the branch pipes can be effectively reduced, and the stability and energy efficiency of a coke oven heating system are improved.

Description

Technical Field

[0001] This invention belongs to the technical field of automatic heating equipment and systems for coke ovens, and in particular relates to a coke oven heating regulation method and device that combines regulation of the main heating pipe and regulation of the branch pipes. Background Technology

[0002] Conventional coke ovens have multiple combustion chambers and carbonization chambers arranged alternately. Taking a 55-hole coke oven as an example, it has 55 carbonization chambers and 56 combustion chambers, arranged alternately. Each carbonization chamber requires heating from the combustion chambers on both sides, and each combustion chamber also supplies heat to the carbonization chambers on both sides. Heated coal gas is mixed with air and burned in the combustion chambers. The heat generated is transferred through the partition walls made of silica bricks between the combustion chambers and carbonization chambers. Coking coal absorbs heat and undergoes high-temperature dry distillation in the carbonization chambers, ultimately forming coke.

[0003] The heat required for coal dry distillation within the coke oven's carbonization chamber is transferred from the combustion chambers on both sides through the furnace wall bricks. Dry distillation proceeds sequentially from the side furnace walls towards the center of the carbonization chamber. After coal is charged into the carbonization chamber, starting from the coal in contact with the high-temperature furnace walls on both sides, the coal undergoes a process of drying and dehydration—softening—plastic state—solidification (semi-coking)—coking (forming coke) layer by layer towards the center of the carbonization chamber. The heat absorbed during the coking process is uneven. After initial coal charging, the wet coal absorbs a large amount of heat and heats up, the moisture in the coal evaporates, it dries and degasses, softens and melts, and tar is released. As the coking process enters the coking stage, the heat required decreases significantly during the shrinkage of the semi-coke until it matures into coke, especially during the initial simmering stage after the fire has died down, when the carbonization chamber absorbs very little heat. Although the coking states of the carbonization chambers on both sides of the combustion chamber differ greatly, it is still insufficient to offset the periodic temperature fluctuations in the combustion chamber caused by the uneven heat absorption during the coking process. The temperature of the vertical flue in two adjacent combustion chambers fluctuates periodically with the coking process. The temperature rises during the coke maturation stage and decreases during the middle stage of coking. Within the same vertical flue, excluding the effects of heating exchange, the temperature difference is about 50°C, and in some cases even exceeds 100°C.

[0004] On the other hand, the alternating configuration of multiple carbonization chambers and multiple combustion chambers in a coke oven requires that, in order to ensure the continuity and stability of production, the coke in each carbonization chamber needs to mature evenly according to its own coking cycle and coking progress. This also requires controlling the temperature of each combustion chamber to be as uniform and stable as possible. When the coking time of the coke oven needs to be adjusted, the temperature of each combustion chamber also needs to be adjusted synchronously. In order to synchronously adjust the heating gas supply of each combustion chamber, conventional coke ovens use a regulating valve installed on the heating gas main pipe for regulation.

[0005] There are two main types of automatic heating technology for coke ovens:

[0006] The first method is the main pipe regulation method: based on the comparison between the temperature measurement data of the entire furnace vertical flue and the standard temperature, the gas flow rate in the main gas pipe is adjusted by regulating the valve of the coke oven heating gas main pipe. This method is simple and easy to implement and can be adapted to most operating conditions.

[0007] The second method is the branch pipe regulation method: based on the temperature data of each combustion chamber and the production status and coking progress of adjacent carbonization chambers, the corresponding combustion chamber branch pipe valves are adjusted through model calculations to regulate the branch pipe gas flow. This method requires a large investment and significant daily maintenance, but it allows for independent and precise regulation of a single combustion chamber.

[0008] Both methods share a common problem: there is a coupling relationship between the main and branch pipe regulation. Adjustments to one can affect the operation of the other, potentially causing mutual disturbances. Improper control can lead to fluctuations in gas pressure, uneven temperature, and even affect coke quality.

[0009] For example, when a single combustion chamber heating regulation technology is applied to a coke oven, the adjustment of the regulating valves of the heating gas branch pipes of some combustion chambers will not only affect the pressure change of the gas branch pipe of that unit, but also cause fluctuations in the pressure of the main heating gas pipe. This will affect the flow rate of the heating gas in combustion chambers that do not need to be regulated, and ultimately affect the temperature stability of other combustion chambers. Summary of the Invention

[0010] Technical Solution: To solve the above-mentioned technical problems, the present invention provides a coke oven heating regulation device that combines the regulation of the main heating pipe and the branch pipe, specifically comprising: a main heating gas pipe regulation unit, a single combustion chamber gas branch pipe regulation unit, an automatic coke oven heating model, a main heating gas pipe, and a coke oven combustion chamber; wherein the main heating gas pipe regulation unit is connected to one end of the main heating gas pipe; the main heating gas pipe is connected to the corresponding coke oven combustion chamber through an independent main heating gas branch pipe, with the other end receiving heating gas and the output end connected to the main heating gas branch pipe; the main heating gas pipe is connected to the single combustion chamber heating control subsystem; wherein the main heating gas pipe regulation unit and the single combustion chamber gas branch pipe regulation unit are connected to the automatic coke oven heating model.

[0011] As an improvement, it also includes a main heating gas valve and a branch heating gas regulating valve. The main heating gas valve is located between the main heating gas regulating unit and the main heating gas pipe. The branch heating gas regulating valve is located between the single combustion chamber gas branch regulating unit and each branch heating gas pipe.

[0012] As an improvement, the coke oven automatic heating model includes a coke oven process condition module, a vertical flue temperature module, and a raw coal gas temperature module. The three modules interact by inputting data into the coke oven automatic heating model.

[0013] As a specific embodiment of the present invention, the present invention also provides a coke oven heating regulation method that combines the regulation of the main heating pipe and the regulation of the branch pipes, the specific steps of which are as follows:

[0014] (1) The required gas flow rate for the entire furnace and the required gas flow rate for each combustion chamber are obtained by calculating using the coke oven automatic heating model;

[0015] (2) By setting the priority of the control of the main heating gas pipe and the branch heating gas pipe, feedforward control of the opening degree of the branch pipe valve is set;

[0016] (3) By establishing a coupled model of main pipe pressure, branch pipe flow and flue temperature, and using optimization algorithms to coordinate the actions of each valve, multi-variable collaborative output of coke oven heating is achieved.

[0017] As an improvement, the method for calculating the coke oven automatic heating model in step (1) is as follows: first, input the coke oven process condition data into the coke oven automatic heating model, calculate, and then output the combustion chamber number and gas flow rate adjustment value to be adjusted to the single combustion chamber heating control branch pipe adjustment unit; at the same time, calculate the gas flow rate adjustment amount of the main pipe according to the increase or decrease of gas volume in each branch pipe, that is, the total coke oven heating gas adjustment amount, and use this adjustment amount as the basis to adjust the regulating valve on the heating gas main pipe.

[0018] As an improvement, the coke oven process condition data includes coal loading, moisture content of blended coal, planned turnaround time, calorific value of heating gas, coal loading time of each carbonization chamber, coke cake temperature, real-time temperature data measured by the raw gas temperature measurement system for the riser pipe, online measured temperature of the vertical flue, and at least one or more of the vertical flue straight-line temperatures of the coke oven automatic temperature measurement system.

[0019] As an improvement, when setting the priority of the heating gas main pipe and heating gas branch pipe control in step (2), including

[0020] (2.1) General control takes precedence over branch control;

[0021] (2.2) Main pipe layer: Pressure-flow cascade control is adopted to stabilize the pressure of the main gas pipe and then adjust the total flow rate; when the pressure of the main gas pipeline fluctuates, causing pressure fluctuations, the main pipe valve is adjusted first; when the calorific value of the gas changes significantly, affecting the change of combustion heating heat, the main pipe valve is adjusted first.

[0022] (2.3) Branch pipe layer: Independent PID control is adopted, and the setpoint is dynamically given by the temperature model;

[0023] (2.4) Perform pressure compensation, monitor the main pipe pressure in real time, and dynamically correct the branch pipe flow set value, wherein the branch pipe set flow = theoretical flow × (actual main pipe pressure / rated pressure).

[0024] As an improvement, the feedforward control in step (2) is based on the coal moisture and coal quantity data implemented in each carbonization chamber. The heating model predicts and calculates the heat required by the adjacent combustion chamber of the carbonization chamber, and adjusts the opening of the branch pipe valve in advance. This includes feedforward adjustment of coal moisture, feedforward adjustment of coal quantity, and feedforward adjustment of gas calorific value fluctuation.

[0025] As an improvement, the feedforward adjustment of coal moisture content uses a moisture meter to measure the coal moisture content in real time for heat compensation. The compensation is applied in segments according to the coking cycle, and the heat compensation formula is as follows:

[0026] Q compensation = (actual W moisture content - baseline W moisture content) * coal loading quantity * k (1)

[0027] In Formula 1, k: compensation coefficient;

[0028] The aforementioned coal loading feedforward adjustment involves increasing or decreasing the gas flow rate in advance after receiving the coal loading data. The compensation formula is as follows:

[0029] ΔQ = {k * coal loading} e^{- k / γ} (2)

[0030] In Formula 2, k is the coal charging heat absorption coefficient, and γ is the decay time constant.

[0031] The aforementioned gas calorific value fluctuation feedforward adjustment is based on the current measured gas calorific value or by using an online calorific value meter to calculate the feedforward action Q. n =Q b *(q r / q a Then, dynamic correction is performed, followed by a first-order hysteresis filter; the input values ​​of the soft sensor model include gas composition, pressure, and temperature; Q n For the corrected flow rate setting, Q b (based on the reference gas flow rate), q r The calorific value of coal gas is the benchmark value, q a The actual calorific value of the gas is obtained through testing or online measurement.

[0032] As an improvement, in step (3), the main pipe is used for the main gas pipeline and the pressure regulating valve is maintained; the branch pipe is used for the branch to distribute to each combustion chamber, and the flow rate is controlled by the branch pipe regulating valve; the fire channel is used for the combustion chamber temperature, which depends on the gas flow rate, air ratio and heat loss; in the coupling model, the decoupling matrix D is calculated so that mathbf{u}=Dmathbf{v}, where mathbf{v}) is the virtual control quantity, u is the actual control quantity, i.e. the opening degree of the branch pipe valve, v is the virtual control quantity, which represents the independent command required by the system to directly control the flow rate of each branch pipe under the "ideal no coupling" condition, and f is the external disturbance, such as gas pressure fluctuation, and the instantaneous change of gas calorific value cancels the flow coupling between the branches.

[0033] Beneficial effects: The device proposed in this invention can control the amount of heating gas supplied to a single combustion chamber of a coke oven while adjusting the total heating gas flow rate to eliminate the influence on the amount of heating gas in other combustion chambers that do not need adjustment. This achieves more precise control of the amount of heating gas in the coke oven, promotes a more stable straight-line temperature in the coke oven, ensures more stable and uniform coke maturation in each carbonization chamber, further guarantees stable coke quality and reduces coke oven energy consumption.

[0034] In this invention, the main pipe regulation is centered on voltage stabilization, while the branch pipe regulation aims at temperature uniformity, and the coupling is reduced through coordinated control. In addition, the method of this invention can effectively reduce the mutual disturbance between the main pipe and branch pipe regulation, and improve the stability and energy efficiency of the coke oven heating system. Attached Figure Description

[0035] Figure 1 This is a schematic diagram illustrating the principle of the method of the present invention.

[0036] In the diagram: 1. Main valve for heating gas; 2. Main pipe for heating gas; 3. Regulating valve for branch pipe for heating gas; 4. Coke oven combustion chamber; 5. Regulating unit for main pipe for heating gas; 6. Regulating unit for branch pipe for single combustion chamber; 7. Automatic heating model for coke oven; 71. Coke oven process conditions module; 72. Vertical flue temperature module; 73. Raw gas temperature module; 8. Heating gas. Detailed Implementation

[0037] The specific embodiments of the present invention will be described in further detail below with reference to the examples. These examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0038] like Figure 1 The diagram shows a coke oven heating regulation device that combines main heating pipe regulation and branch pipe regulation. It includes a main heating gas pipe regulation unit 5, a single combustion chamber gas branch pipe regulation unit 6, a coke oven automatic heating model 7, a main heating gas pipe 2, and a coke oven combustion chamber 4. The main heating gas pipe regulation unit 5 is connected to one end of the main heating gas pipe 2. The main heating gas pipe 2 is connected to the corresponding coke oven combustion chamber 4 via an independent heating gas branch pipe, with heating gas 8 input at the other end and an output end connected to the heating gas branch pipe. The heating gas branch pipe is connected to the single combustion chamber heating control subsystem 6. The main heating gas pipe regulation unit 5 and the single combustion chamber gas branch pipe regulation unit 6 are connected to the coke oven automatic heating model 7.

[0039] Furthermore, it also includes a main heating gas valve 1 and a branch heating gas regulating valve 3. The main heating gas valve 1 is located between the main heating gas regulating unit 5 and the main heating gas pipe 2. The branch heating gas regulating valve 3 is located between the single combustion chamber gas branch regulating unit 6 and each branch heating gas pipe.

[0040] Furthermore, the coke oven automatic heating model 7 includes a coke oven process condition module 71, a vertical flue temperature module 72, and a raw coal gas temperature module 73. These three modules interact with each other by inputting data into the coke oven automatic heating model 7.

[0041] It also includes an automatic heating main pipe regulating unit, a single combustion chamber heating control branch pipe regulating unit, a heating gas main pipe regulating valve, a heating gas main pipe, and heating gas branch pipe regulating valves. Among them, the automatic heating main pipe regulating unit is used for regulating the heating gas main pipe; the single combustion chamber heating control branch pipe regulating unit is used for regulating the combustion chamber and its corresponding branch pipe.

[0042] The method of adjustment using the above-mentioned device in this invention is as follows: the coke oven process conditions (coal charging amount, moisture content of blended coal, planned turnover time, coal charging time of each carbonization chamber, etc.), the real-time temperature data measured by the riser pipe raw gas temperature measurement system, the online measured vertical flue temperature, the vertical flue straight-line temperature of the coke oven automatic temperature measurement system, and coke cake temperature, etc., are input into the coke oven automatic heating model.

[0043] The coke oven automatic heating model performs calculations and outputs the combustion chamber number and gas flow adjustment value (addition or subtraction) to be adjusted to the single combustion chamber heating control branch pipe adjustment unit. At the same time, based on the increase or decrease of gas flow in each branch pipe, the gas flow adjustment amount of the main pipe is calculated, that is, the total coke oven heating gas adjustment amount. Based on this adjustment amount, the regulating valve on the heating gas main pipe is adjusted to achieve the goal of not affecting the pressure of the heating branch pipes of other combustion chambers when adjusting the heating of a single combustion chamber. This enables more precise control of the coke oven heating gas amount, promotes a more stable coke oven straight-line temperature, ensures more stable and uniform coke maturation in each carbonization chamber, further ensures stable coke quality and reduces coke oven energy consumption.

[0044] Furthermore, the coke oven automatic heating model calculates the current gas flow rate required for the entire furnace and the gas flow rate required for each combustion chamber. On the other hand, it calculates the opening degree of the main pipe and branch pipe regulating valves based on the following aspects.

[0045] 1. Hierarchical control strategy

[0046] The main control has a higher priority, while the branch control needs to be adjusted only when the main control parameters are stable.

[0047] Main pipe layer: A pressure-flow cascade control system is employed, prioritizing the stabilization of the main gas pipe pressure (outer loop) before adjusting the total flow rate (inner loop). When the main gas pipeline pressure fluctuates, causing pressure fluctuations, the main pipe valves are adjusted first. When there are significant changes in the calorific value of the gas, affecting the combustion and heating capacity, the main pipe valves are adjusted first.

[0048] Branch pipe layer: Each branch pipe is independently PID regulated, and the setpoint is dynamically given by the temperature model.

[0049] Pressure compensation algorithm: Real-time monitoring of main pipe pressure and dynamic correction of branch pipe flow setpoint (e.g.: branch pipe setpoint flow = theoretical flow × (actual main pipe pressure / rated pressure)).

[0050] The main pipe and branch pipe system can achieve a balance between global stability and precise local adjustment, and is suitable for production processes with multiple combustion chambers in coke ovens and uneven heat demand in each combustion chamber.

[0051] 2. Feedforward control

[0052] The feedforward control in this invention is as follows: by detecting the trend of pressure change in the main pipe, the opening of the branch pipe valves is adjusted in advance. For example, when the pressure drops, the valves are pre-opened proportionally.

[0053] In coke oven control systems, heat feedforward regulation is a key control strategy that maintains stable flue temperature by predicting and compensating for major heat disturbances, such as fluctuations in gas calorific value, changes in air preheating temperature, and changes in coal loading. Unlike traditional feedback control, it does not rely on temperature deviations but instead acts directly based on disturbance measurements.

[0054] Based on the coal moisture content and coal quantity data implemented in each carbonization chamber, the heating model predicts and calculates the heat required by the adjacent combustion chambers of that carbonization chamber, and adjusts the opening of the branch pipe valves in advance to increase the coal moisture content and coal quantity, opening the valves in advance according to the calculated values. The feedforward control method of this invention includes the following aspects:

[0055] (1) Fluctuations in the calorific value of coal gas (such as changes in the CO2 content in mixed coal gas)

[0056] Gas calorific value fluctuation feedforward regulation is based on the current measured gas calorific value or using an online calorific value meter to calculate the feedforward action Q. n =Q b *(q r / q a Then, dynamic correction is performed, followed by a first-order hysteresis filter; the input values ​​of the soft sensor model include gas composition, pressure, and temperature; Q n For the corrected flow rate setting, Q b (based on the reference gas flow rate), q r The calorific value of coal gas is the benchmark value, q a The actual calorific value of the gas is obtained through testing or online measurement.

[0057] (2) Feedforward regulation of coal loading

[0058] Upon receiving coal loading data, adjust the gas flow rate accordingly:

[0059] ΔQ={k*coal loading amount}e^{-k / γ}(1)

[0060] In formula (1), k is the heat absorption coefficient of coal loading, and γ is the decay time constant, usually 10-15 minutes.

[0061] (3) Coal loading moisture adjustment

[0062] The evaporation of moisture in coking coal requires heat absorption, directly increasing gas consumption. Furthermore, increased moisture content leads to increased steam and flue gas volume, lowering the actual flue gas temperature (requiring additional heat to maintain the setpoint). A moisture meter is used to measure the moisture content of the coal in real time, and a heat compensation formula is applied:

[0063] Q compensation = (W moisture) 实际 -W moisture 基准 * Coal loading amount * k(2)

[0064] In formula (2), k is the compensation coefficient, preferably 1% increase in coal moisture content results in an increase of 29kJ in calorific value; dynamic adjustment: the compensation amount is applied in stages according to the coking cycle, preferably 80% in the initial stage of coal loading and 20% in the middle stage.

[0065] In this invention, precise moisture-heat coupling control can significantly improve the thermal efficiency of coke ovens while reducing coking time fluctuations and coke quality dispersion.

[0066] By using heat feedforward regulation, the coke oven system can significantly reduce temperature fluctuations, improve energy efficiency and product quality, and is an indispensable control method under complex operating conditions.

[0067] 3. Multivariate Model Prediction Algorithm Control (MPC)

[0068] In this invention, a coupled model of main pipe pressure, branch pipe flow rate, and flue temperature is first established, and then the actions of each valve are coordinated through an optimization algorithm. Specifically, the construction of the coupled model for the main pipe pressure-branch pipe flow rate-flue temperature of the coke oven system, combining fluid network, combustion thermodynamics, and control system theory, is suitable for precise control of the coke oven gas heating process. The following settings were made during the construction of the coupled model.

[0069] (1) Main pipe: Used for the main gas pipeline, with pressure maintained by a pressure regulating valve. Branch pipe: Used for distributing gas to each combustion chamber, with flow controlled by a branch pipe regulating valve. Fire channel: The combustion chamber temperature is determined by the gas flow rate, air ratio, and heat loss.

[0070] (2) Design a decoupling matrix (D) such that mathbf{u}=D mathbf{v}, where mathbf{v} is the virtual control variable, u is the actual control variable (i.e., the opening degree of the branch valve), v is the virtual control variable, representing the independent command required for the system to directly control the flow of each branch in the "ideal uncoupled" case, and f is the external disturbance, such as gas pressure fluctuations, and the instantaneous change in the calorific value of the gas cancels out the flow coupling between the branches. In this invention, this model can realize multi-variable collaborative control of the coke oven heating process, improving temperature uniformity and heat utilization efficiency.

[0071] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A coke oven heating regulation device that combines the regulation of the main heating pipe and the branch pipe, characterized in that: It includes a heating gas main pipe regulating unit (5), a single combustion chamber gas branch pipe regulating unit (6), a coke oven automatic heating model (7), a heating gas main pipe (2), and a coke oven combustion chamber (4); wherein the heating gas main pipe regulating unit (5) is connected to one end of the heating gas main pipe (2); the heating gas main pipe (2) is connected to the corresponding coke oven combustion chamber (4) through an independent heating gas branch pipe, and the other end is connected to the heating gas branch pipe for input heating gas (8); the heating gas branch pipe is connected to the single combustion chamber heating control subsystem (6); wherein the heating gas main pipe regulating unit (5) and the single combustion chamber gas branch pipe regulating unit (6) are connected to the coke oven automatic heating model (7).

2. The coke oven heating regulating device with both main heating pipe regulation and branch pipe regulation as described in claim 1, characterized in that: It also includes a main heating gas valve (1) and a branch heating gas regulating valve (3). The main heating gas valve (1) is located between the main heating gas regulating unit (5) and the main heating gas pipe (2). The branch heating gas regulating valve (3) is located between the single combustion chamber gas branch regulating unit (6) and each branch heating gas pipe.

3. The coke oven heating regulating device with both main heating pipe regulation and branch pipe regulation as described in claim 1, characterized in that: The coke oven automatic heating model (7) includes a coke oven process condition module (71), a vertical flue temperature module (72), and a raw coal gas temperature module (73). The three modules interact with each other by inputting data into the coke oven automatic heating model (7).

4. A coke oven heating regulation method that combines the regulation of the main heating pipe and the regulation of the branch pipes, characterized in that: The specific steps are: (1) The required gas flow rate for the entire furnace and the required gas flow rate for each combustion chamber are obtained by calculating using the coke oven automatic heating model; (2) By setting the priority of the control of the main heating gas pipe and the branch heating gas pipe, feedforward control of the opening degree of the branch pipe valve is set; (3) By establishing a coupled model of main pipe pressure, branch pipe flow and flue temperature, and using optimization algorithms to coordinate the actions of each valve, multi-variable collaborative output of coke oven heating is achieved.

5. The coke oven heating regulating device with both main heating pipe regulation and branch pipe regulation as described in claim 4, characterized in that: The method for calculating the coke oven automatic heating model in step (1) is as follows: First, input the coke oven process condition data into the coke oven automatic heating model, calculate it, and then output the combustion chamber number and gas flow rate adjustment value to be adjusted to the single combustion chamber heating branch pipe adjustment unit; at the same time, calculate the gas flow rate adjustment amount of the main pipe according to the increase or decrease of gas volume in each branch pipe, that is, the total coke oven heating gas adjustment amount, and use this adjustment amount as the basis to adjust the regulating valve on the heating gas main pipe.

6. The coke oven heating regulating device with both main heating pipe regulation and branch pipe regulation as described in claim 5, characterized in that: The coke oven process condition data includes coal loading, moisture content of blended coal, planned turnaround time, coal loading time of each carbonization chamber, coke cake temperature, calorific value of heating gas, real-time temperature data measured by the raw gas temperature measurement system for the riser pipe, online measured temperature of the vertical flue, and at least one or more of the vertical flue straight-line temperatures of the coke oven automatic temperature measurement system.

7. The coke oven heating regulating device with both main heating pipe regulation and branch pipe regulation as described in claim 4, characterized in that: When setting the priority of the heating gas main pipe and heating gas branch pipe control in step (2), including (2.1) General control takes precedence over branch control; (2.2) Main pipe layer: Pressure-flow cascade control is adopted to stabilize the pressure of the main gas pipe and then adjust the total flow rate; when the pressure of the main gas pipeline fluctuates, causing pressure fluctuations, the main pipe valve is adjusted first; when the calorific value of the gas changes significantly, affecting the change of combustion heating heat, the main pipe valve is adjusted first. (2.3) Branch pipe layer: Independent PID control is adopted, and the setpoint is dynamically given by the temperature model; (2.4) Perform pressure compensation, monitor the main pipe pressure in real time, and dynamically correct the branch pipe flow set value, wherein the branch pipe set flow = theoretical flow × (actual main pipe pressure / rated pressure).

8. The coke oven heating regulating device with both main heating pipe regulation and branch pipe regulation as described in claim 4, characterized in that: The feedforward control mentioned in step (2) is based on the coal moisture and coal quantity data implemented in each carbonization chamber. The heating model predicts and calculates the heat required by the adjacent combustion chamber of the carbonization chamber, and adjusts the opening of the branch pipe valve in advance. This includes feedforward adjustment of coal moisture, feedforward adjustment of coal quantity, and feedforward adjustment of coal gas calorific value fluctuation.

9. The coke oven heating regulating device with both main heating pipe regulation and branch pipe regulation as described in claim 8, characterized in that: The feedforward adjustment of coal moisture content is achieved by using a moisture meter to measure the coal moisture content in real time and performing heat compensation. The compensation amount is applied in segments according to the coking cycle. The heat compensation formula is as follows: Q compensation = (W moisture) 实际 -W moisture 基准 In Formula 1, k is the compensation coefficient. The aforementioned coal loading feedforward adjustment involves increasing or decreasing the gas flow rate in advance after receiving the coal loading data. The compensation formula is as follows: ΔQ = {k * coal loading} e^{- k / γ} (2) In Formula 2, k: coal charging heat absorption coefficient; γ: Decay time constant; The aforementioned gas calorific value fluctuation feedforward adjustment is based on the current measured gas calorific value or by using an online calorific value meter to calculate the feedforward action Q. n =Q b *(q r / q a Then, dynamic correction is performed, followed by the superposition of a first-order lag filter. The input values ​​for the soft sensor model include gas composition, pressure, and temperature; Q n For the corrected flow rate setting, Q b For the reference gas flow rate, q r The calorific value of coal gas is the benchmark value, q a The actual calorific value of the gas is obtained through testing or online measurement.

10. The coke oven heating regulating device with both main heating pipe regulation and branch pipe regulation as described in claim 4, characterized in that: In step (3), the main pipe is used for the main gas pipeline and the pressure regulating valve is used to maintain the pressure; the branch pipe is used for the branch to each combustion chamber, and the flow rate is controlled by the branch pipe regulating valve. The temperature of the combustion chamber depends on the gas flow rate, air ratio, and heat loss. In the coupled model, the decoupling matrix D is calculated to make mathbf{u}=D mathbf{v}, where mathbf{v} is the virtual control quantity, u is the actual control quantity, i.e., the opening degree of the branch valve, v is the virtual control quantity, representing the independent command required by the system to directly control the flow of each branch in the "ideal uncoupled" case, and f is the external disturbance.

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