Hydrogen production system and method

Abstract

This invention belongs to the field of iron and steel smelting technology, specifically disclosing an adaptive matching system and method for molten iron tapping and transportation in a HyCROF furnace. The system mainly consists of a silo, belt scale, blast furnace body, tapping machine, mud gun, torpedo ladle, rail scale, PLC controller, and central control host. The method relies on real-time monitoring data of feed and oxygen / gas, calculates hourly molten iron production through the central control host, determines the number of torpedo ladles, and automatically controls the tapping machine and mud gun to complete the tapping and tapping operations via PLC. This invention replaces traditional manual experience-based scheduling with automatic data calculation and electrical linkage control, reducing high-risk manual operations at the furnace front, achieving adaptive matching between blast furnace tapping rhythm and torpedo ladle transportation, ensuring stable furnace conditions in low-carbon ironmaking, and improving production safety and smelting efficiency.

Description

Technical Field

[0001] This invention relates to the field of iron and steel smelting technology, specifically to an adaptive matching system and method for tapping and transporting molten iron from a HyCROF furnace. Background Technology

[0002] The HyCROF furnace achieves significant carbon reduction in the ironmaking process by relying on hydrogen-rich injection and furnace top gas recycling. The tapping and molten iron transfer process, as the intermediate hub connecting blast furnace smelting and subsequent steelmaking, is the core key link for the stable production of the entire low-carbon ironmaking process. The control of tapping rhythm and the stability of molten iron transportation directly affect the smooth operation of the blast furnace, the efficiency of hydrogen-based reduction, and the low-carbon energy consumption indicators of the entire production line.

[0003] At present, the production organization mode of HyCROF furnace is still mainly based on traditional manual experience scheduling and manual operation. The control of opening blockage and the distribution of molten iron ladle are highly dependent on the professional experience of the operators.

[0004] The operations of opening the furnace and plugging the mud gun are carried out in a high-risk working environment with radiation from high-temperature molten iron. Manual close-range operation is not only physically demanding and under harsh working conditions, but also highly prone to safety accidents such as burns, gas poisoning, and injuries from splashes. At the same time, due to differences in human subjective judgment, it is easy to cause imbalances in the tapping rhythm and mismatch of molten iron ladles, which in turn disrupts the hydrogen-rich smelting rhythm of the blast furnace. Summary of the Invention

[0005] The purpose of this invention is to provide an adaptive matching system and method for tapping and transporting molten iron in a HyCROF furnace, in order to solve the problems of existing tapping operations being mainly manual, with high operational intensity, harsh working conditions, and potential safety hazards.

[0006] To achieve the above objectives, the basic solution provided by this invention is: an adaptive matching method for molten iron tapping and transportation in a HyCROF furnace, comprising the following steps: S1. Ore enters the blast furnace body from the silo via belt scale, conveyor belt and furnace top charging device. During this process, the belt scale weighs the ore, and the oxygen flow meter and gas flow meter detect the oxygen and gas flow in the oxygen pipe and gas pipe in real time, and transmit the detected data to the host in the central control room via PLC controller. S2. After receiving the data, the central control room host calculates the hourly iron production of the blast furnace body based on the data detected by the belt scale, oxygen flow meter and gas flow meter. S3. After calculating the hourly molten iron production, calculate the number of torpedo ladles to be configured on the rails based on the hourly molten iron production. S4. Select the diameter of the taphole drill rod corresponding to the taphole of the blast furnace body based on the hourly iron production and the number of torpedo ladles. S5. After selecting the diameter corresponding to the taphole drill rod, the main unit in the central control room outputs an opening signal to the PLC controller, which controls the taphole machine to open the taphole of the blast furnace body. The hot molten slag iron in the furnace is output through the taphole, flows through the iron storage trough and the swing nozzle into the torpedo ladle. When the weighing value of the rail scale is close to the theoretical production amount, the main unit in the central control room outputs a plugging signal to the PLC controller, which controls the mud gun to plug the taphole, thus completing one tapping operation.

[0007] The beneficial effects of this invention are as follows: Real-time data acquisition by the equipment, central control unit calculation, and PLC automatic control complete the calculation of molten iron quantity, ladle configuration, selection of taphole drill rods, and automatic opening and plugging operations, reducing the intensity of manual operation in front of the furnace and improving harsh working conditions. Simultaneously, based on real-time operating data of ore feeding, oxygen, and gas, the hourly molten iron production is accurately calculated, and this is used to match the number of torpedo ladles, controlling the tapping rate and total molten iron output.

[0008] Option 2, which is a preferred option of the basic option, in S2, the formula for calculating the hourly molten iron generation is as follows:

[0009] In the formula: This indicates the amount of molten iron produced per hour, in tons. This indicates the amount of ore fed into the furnace per hour, in tons. Indicates the grade of ore fed into the furnace, in percent.

[0010] Option 3, which is a preferred option of the basic option, uses the following formula to calculate the number of torpedo canisters in S3:

[0011] In the formula: Indicates the number of torpedo canisters; Indicates the rated capacity of a single torpedo canister; This represents the coefficient of non-uniformity.

[0012] Option 4, an optimized version of the basic option, in S5, when the difference between the actual and theoretical iron content in the torpedo ladle is less than 2 tons, the molten iron flow rate drops to 3 tons / min, and the gas concentration near the blast furnace taphole is greater than 100 ppm, it is determined that the molten iron has been completely discharged, and the mud gun is activated to block the taphole. When the molten iron flow rate drops to 3 tons / min, and the difference between the actual and theoretical iron content in the torpedo ladle is greater than or equal to 2 tons, slag flow feedback appears on the control panel in the central control room, and the staff confirms the slag discharge stage in the iron tapping process through touch control. When the molten iron flow rate drops to 3 tons / min, and the difference between the actual and theoretical iron content in the torpedo ladle is greater than or equal to 2 tons, and the slag flow feedback is 0, it is determined that the blast furnace taphole is blocked, and the taphole opening machine is activated to poke the taphole. During the taphole opening machine operation, a drill rod is installed on the taphole opening machine, which is moved above the taphole. Water is sprayed to cool the guide beam and pipeline of the taphole opening machine, and the compressed air of the taphole opening machine is turned on to quickly drive the drill rod into the taphole until the molten iron flow at the taphole is normal, and the taphole opening machine is returned to its original position.

[0013] Option 5: An adaptive matching system for molten iron tapping and transportation in a HyCROF furnace, comprising a hopper, a conveyor belt, a blast furnace body, an iron storage trough, a swing nozzle, and rails. A belt scale is installed below one end of the conveyor belt, and the discharge end of the hopper is located directly above the belt scale. The other end of the conveyor belt is located directly above the inlet of the blast furnace top charging device. The taphole of the blast furnace body is connected to the iron storage trough. The swing nozzle is located directly below the discharge end of the iron storage trough. An opening machine and a mud gun are installed beside the taphole of the blast furnace body. A torpedo ladle is installed on the rails, and the discharge end of the swing nozzle is located directly above the torpedo ladle. A rail scale for weighing is installed on the rails.

[0014] Option 6, which is a preferred option of the basic option, is that the tuyeres of the blast furnace body are connected to an oxygen pipe and a gas pipe. The oxygen pipe is equipped with an oxygen regulating valve and an oxygen flow meter, and the gas pipe is equipped with a gas flow meter and a gas regulating valve.

[0015] Option 7, which is a preferred option of the basic option, is that the rail scale is electrically connected to a PLC controller, and the oxygen regulating valve, oxygen flow meter, gas flow meter, gas regulating valve and belt scale are all electrically connected to the PLC controller. The PLC controller is electrically connected to the main unit in the central control room. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an adaptive matching system for tapping and transporting molten iron in a HyCROF furnace according to the present invention.

[0017] The reference numerals in the accompanying drawings of the instruction manual include: 1: silo; 2: belt scale; 3: conveyor belt; 4: blast furnace body; 5: iron storage trough; 6: oscillating nozzle; 7: rail; 8: opening machine; 9: mud gun; 10: torpedo pot; 11: rail scale; 12: oxygen pipe; 13: oxygen flow meter; 14: oxygen regulating valve; 15: gas pipe; 16: gas flow meter; 17: gas regulating valve. Detailed Implementation

[0018] The present invention will be further described in detail below through specific embodiments: like Figure 1 The diagram shows an adaptive matching system for molten iron tapping and transportation in a HyCROF furnace. The system includes a hopper 1, a conveyor belt 3, a blast furnace body 4, an iron storage trough 5, a swing nozzle 6, and a rail 7. A belt scale 2 is located below one end of the conveyor belt 3, with the discharge end of the hopper 1 directly above the belt scale 2. The other end of the conveyor belt 3 is located directly above the inlet of the charging device at the top of the blast furnace body 4. The taphole of the blast furnace body 4 is connected to the iron storage trough 5. The swing nozzle 6 is located directly below the discharge end of the iron storage trough 5. An opening machine 8 and a mud gun 9 are located beside the taphole of the blast furnace body 4. A torpedo ladle 10 is mounted on the rail 7. The discharge end of the swing nozzle 6 is located directly above the torpedo pot 10. A rail scale 11 for weighing is installed on the rail 7. The tuyeres of the blast furnace body 4 are connected to an oxygen pipe 12 and a gas pipe 15. An oxygen regulating valve 14 and an oxygen flow meter 13 are installed on the oxygen pipe 12. A gas flow meter 16 and a gas regulating valve 17 are installed on the gas pipe 15. A PLC controller is electrically connected to the rail scale 11. The oxygen regulating valve 14, the oxygen flow meter 13, the gas flow meter 16, the gas regulating valve 17, and the belt scale 2 are all electrically connected to the PLC controller. The PLC controller is electrically connected to the main unit in the central control room.

[0019] The implementation method of this embodiment is as follows: When the system is working, the ore first enters the blast furnace body 4 from the hopper 1 via the belt scale 2, the conveyor belt 3, and the top charging device. During this process, the belt scale 2 weighs the ore, and the oxygen flow meter 13 and the gas flow meter 16 monitor the oxygen and gas flow rates in the oxygen pipe 12 and gas pipe 15 in real time, and transmit the monitored data to the central control room host via the PLC controller. After receiving the data, the central control room host calculates the hourly iron production of the blast furnace body 4 based on the data detected by the belt scale 2, oxygen flow meter 13, and gas flow meter 16. The amount of water generated is calculated, and the number of torpedo ladles 10 configured on rail 7 is determined. Based on the hourly iron production and the number of torpedo ladles 10, the diameter of the taphole drill rod corresponding to the taphole of the blast furnace body 4 is selected. After selecting the diameter of the taphole drill rod, the main unit in the central control room outputs an opening signal to the PLC controller, which controls the taphole machine 8 to open the taphole of the blast furnace body 4. The hot molten slag iron in the furnace is output through the taphole, flows through the iron storage trough 5 and the swing nozzle 6 into the torpedo ladle 10. When the weighing value of the rail scale 11 is close to the theoretical production amount, the main unit in the central control room outputs a plugging signal to the PLC controller, which controls the mud gun 9 to plug the taphole, thus completing one iron tapping operation.

[0020] An adaptive matching method for molten iron tapping and transportation in a HyCROF furnace includes the following steps: S1. Ore enters the blast furnace body 4 from the silo 1 via the belt scale 2, the conveyor belt 3 and the furnace top charging device. During this process, the belt scale 2 weighs the ore, and the oxygen flow meter 13 and the gas flow meter 16 detect the oxygen and gas flow in the oxygen pipe 12 and the gas pipe 15 in real time, and transmit the detected data to the host in the central control room via the PLC controller. S2. After receiving the data, the central control room host calculates the hourly iron production of the blast furnace body 4 based on the data detected by belt scale 2, oxygen flow meter 13, and gas flow meter 16. The formula for calculating the hourly iron production is as follows:

[0021] In the formula: This indicates the amount of molten iron produced per hour, in tons. This indicates the amount of ore fed into the furnace per hour, in tons. Indicates the grade of ore fed into the furnace, in units of %; S3. After calculating the hourly molten iron production rate, calculate the number of torpedo ladles 10 to be configured on rail 7 based on the hourly molten iron production rate; the formula for calculating the number of torpedo ladles is as follows:

[0022] In the formula: Indicates the number of torpedo canisters; Indicates the rated capacity of a single torpedo canister; Indicates the coefficient of non-uniformity; S4. Based on the hourly iron production and the number of torpedo ladles 10, select the diameter of the taphole drill rod corresponding to the taphole of the blast furnace body 4. S5. After selecting the diameter corresponding to the taphole drill rod, the main unit in the central control room outputs an opening signal to the PLC controller, which controls the taphole machine 8 to open the taphole of the blast furnace body 4. The hot molten slag iron in the furnace is output through the taphole, flows through the iron storage trough 5 and the swing nozzle 6 into the torpedo ladle 10. When the weighing value of the rail scale 11 is close to the theoretical production amount, the main unit in the central control room outputs a plugging signal to the PLC controller, which controls the mud gun 9 to plug the taphole, thus completing one tapping operation.

[0023] When the difference between the actual iron received by the torpedo ladle 10 and the theoretical iron received is less than 2 tons, the iron flow rate drops to 3 tons / min, and the gas concentration near the taphole of the blast furnace body 4 is greater than 100 ppm, it is determined that the iron has been completely discharged, and the mud gun 9 is activated to block the taphole. When the iron flow rate drops to 3 tons / min, and the difference between the actual iron received by the torpedo ladle 10 and the theoretical iron received is greater than or equal to 2 tons, the slag flow feedback appears on the control panel in the central control room, and the staff confirms the slag discharge stage in the iron tapping process through touch control. When the iron flow rate drops to 3 tons / min, and the difference between the actual iron received by the torpedo ladle 10 and the theoretical iron received is greater than or equal to 2 tons, and the slag flow feedback is 0, it is determined that the taphole of the blast furnace body 4 is blocked, and the taphole opening machine 8 is activated to poke the taphole. When the taphole opening machine 8 pokes the taphole, a drill rod is installed on the taphole opening machine 8, and it is opened above the taphole. Water is sprayed to cool the guide beam and pipeline of the taphole opening machine 8, the compressed air of the taphole opening machine 8 is turned on, and the drill rod is quickly driven into the taphole until the iron flow at the taphole is normal, and the taphole opening machine 8 is returned to its original position.

[0024] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An adaptive matching method for tapping and transporting molten iron from a HyCROF furnace, characterized in that, Includes the following steps: S1. Ore enters the blast furnace body (4) from the silo (1) via the belt scale (2), the conveyor belt (3) and the furnace top charging device. During this process, the belt scale (2) weighs the ore, and the oxygen flow meter (13) and the gas flow meter (16) detect the oxygen and gas flow in the oxygen pipe (12) and the gas pipe (15) in real time, and transmit the detected data to the host in the central control room via the PLC controller. S2. After the central control room host obtains the data, it calculates the amount of molten iron generated per hour in the blast furnace body (4) based on the data detected by the belt scale (2), oxygen flow meter (13) and gas flow meter (16). S3. After calculating the hourly iron production, calculate the number of torpedo ladles (10) on the rail (7) based on the hourly iron production. S4. Based on the hourly iron production and the number of torpedo ladles (10), select the diameter of the tap hole drill rod corresponding to the tap hole of the blast furnace body (4); S5. After selecting the diameter corresponding to the iron tap drill rod, the host in the central control room outputs the opening signal to the PLC controller, controls the opening machine (8) to open the iron tap of the blast furnace body (4), and the hot molten slag iron in the furnace is output through the iron tap, flows through the iron storage ditch (5) and the swing nozzle (6) into the torpedo pot (10). When the weighing value of the rail scale (11) is close to the theoretical production amount, the host in the central control room outputs the blocking signal to the PLC controller, controls the mud gun (9) to block the iron tap, and completes one iron tapping operation.

2. The adaptive matching method for tapping and transporting molten iron in a HyCROF furnace according to claim 1, characterized in that, In S2, the formula for calculating the hourly iron production rate is as follows: In the formula: This indicates the amount of molten iron produced per hour, in tons. This indicates the amount of ore fed into the furnace per hour, in tons. Indicates the grade of ore fed into the furnace, unit: %.

3. The adaptive matching method for tapping and transporting molten iron in a HyCROF furnace according to claim 1, characterized in that, In S3, the formula for calculating the number of torpedo canisters is as follows: In the formula: Indicates the number of torpedo canisters; Indicates the rated capacity of a single torpedo canister; This represents the coefficient of non-uniformity.

4. The adaptive matching method for tapping and transporting molten iron in a HyCROF furnace according to claim 1, characterized in that, In S5, when the difference between the actual amount of iron received by the torpedo pot (10) and the theoretical amount of iron is less than 2 tons, the flow rate of molten iron is reduced to 3 tons / min, and the gas concentration near the taphole of the blast furnace body (4) is greater than 100ppm, it is judged that the molten iron has been discharged and the mud gun (9) is started to block the taphole. When the molten iron flow rate is reduced to 3 tons / min, and the difference between the actual amount of iron received by the torpedo ladle (10) and the theoretical amount of iron is greater than or equal to 2 tons, the slag flow feedback appears on the control panel in the central control room, and the staff confirms the slag discharge stage in the iron tapping process through touch control. When the molten iron flow rate drops to 3 tons / min, the difference between the actual amount of iron received by the torpedo ladle (10) and the theoretical amount of iron is greater than or equal to 2 tons. When the slag flow feedback is 0, it is judged that the blast furnace body (4) is blocked. Start the tapping machine (8) to poke the tap. When the tapping machine (8) pokes the tap, install a drill rod on the tapping machine (8), open it above the tap, spray water to cool the guide beam and pipeline of the tapping machine (8), turn on the compressed air of the tapping machine (8), and quickly drive the drill rod into the tap until the iron flow in the tap is normal. Then the tapping machine (8) returns to its original position.

5. An adaptive matching system for molten iron tapping and transportation in a HyCROF furnace, characterized in that, The blast furnace includes a hopper (1), a conveyor belt (3), a blast furnace body (4), an iron storage trough (5), a swing nozzle (6), and a rail (7). A belt scale (2) is located below one end of the conveyor belt (3). The discharge end of the hopper (1) is located directly above the belt scale (2). The other end of the conveyor belt (3) is located directly above the inlet of the top charging device of the blast furnace body (4). The taphole of the blast furnace body (4) is connected to the iron storage trough (5). The swing nozzle (6) is located directly below the discharge end of the iron storage trough (5). An opening machine (8) and a mud gun (9) are located next to the taphole of the blast furnace body (4). A torpedo pot (10) is located on the rail (7). The discharge end of the swing nozzle (6) is located directly above the torpedo pot (10). A rail scale (11) for weighing is located on the rail (7).

6. The HyCROF furnace molten iron tapping and transportation adaptive matching system according to claim 5, characterized in that, The tuyeres of the blast furnace body (4) are connected to an oxygen pipe (12) and a gas pipe (15). An oxygen regulating valve (14) and an oxygen flow meter (13) are provided on the oxygen pipe (12), and a gas flow meter (16) and a gas regulating valve (17) are provided on the gas pipe (15).

7. The HyCROF furnace molten iron tapping and transport adaptive matching system according to claim 6, characterized in that, The rail scale (11) is electrically connected to a PLC controller. The oxygen regulating valve (14), oxygen flow meter (13), gas flow meter (16), gas regulating valve (17) and belt scale (2) are all electrically connected to the PLC controller. The PLC controller is electrically connected to the main unit in the central control room.

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