CN115386663B - Intelligent ignition method and ignition system for blast furnace top - Google Patents
Intelligent ignition method and ignition system for blast furnace top Download PDFInfo
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- CN115386663B CN115386663B CN202211045101.1A CN202211045101A CN115386663B CN 115386663 B CN115386663 B CN 115386663B CN 202211045101 A CN202211045101 A CN 202211045101A CN 115386663 B CN115386663 B CN 115386663B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/006—Automatically controlling the process
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses an intelligent ignition method and an ignition system for a blast furnace top, wherein the method comprises the following steps: the gas in the furnace top fan housing and the gravity dust remover is leaked; cleaning residual coal gas in a coal gas ascending pipe, a coal gas descending pipe and a gravity dust remover; inputting a height parameter of a material surface; opening an ignition hole valve and an observation hole valve; detecting gas components in the gravity dust remover; adjusting a gas input valve, an air input valve and an oxygen input valve; the ignition gun is inserted into the furnace top fan cover, and the height of the front end of the ignition gun from the material surface reaches a preset height; monitoring an ignition site; the system comprises: a remote control unit, an on-site execution unit and an on-site monitoring unit. According to the invention, through the coordination and coordination of the remote control unit, the on-site execution unit and the on-site monitoring unit, the whole ignition process is monitored and controlled, unmanned on-site management and operation are realized, human resources are saved, the working efficiency is improved, and potential safety hazards are avoided.
Description
Technical Field
The invention belongs to the technical field of metallurgy, and particularly relates to an intelligent ignition method and an intelligent ignition system for a blast furnace top.
Background
When the blast furnace is scheduled to be overhauled, the air supply to the inside of the blast furnace is stopped, and the high-pressure coal gas in the blast furnace is discharged through a furnace top large relief valve, and the process is called damping down. After the blast furnace is in a damping down state, the pressure in the furnace is close to the atmospheric pressure, but the residual fire of fuel such as coke in the furnace is not extinguished to generate a large amount of gas, and the gas poisoning of maintenance personnel is easily caused. Therefore, when the blast furnace is in damping down for more than 3-4 hours, high-pressure steam is required to be introduced into the blast furnace to purge the gas in the pipeline in the furnace top cover as clean as possible, then an ignition hole on the furnace top cover of the blast furnace is opened, an ignition gun is inserted into the furnace from the ignition hole, the gas continuously generated in the furnace is ignited to burn out, and after the maintenance is finished, the ignition gun is pulled out from the furnace to close the ignition hole.
Currently, in some ironmaking enterprises, the blast furnace top ignition after damping down is finished by manual operation, namely: manually opening a gland plate on the ignition hole; sampling and testing coal gas on a gravity dust remover; after the test is qualified, the ignition operator starts to ignite and feeds the ignition gun into the furnace; the ignition site is patrolled and monitored; after the maintenance is finished, extinguishing the ignition gun and extracting the ignition gun; the replacement gasket closes the ignition hole. This mode of manual operation has a number of drawbacks: firstly, only one ignition hole is arranged on the blast furnace sealing cover, so that operators cannot accurately observe the combustion condition in the furnace, and the implementation of operation rules is affected; secondly, the whole operation process has a plurality of safety risks, and also needs to consume a long time and waste a large amount of human resources.
Disclosure of Invention
1. Technical problem to be solved
The invention provides an intelligent ignition method and an intelligent ignition system for a blast furnace top, and aims to provide the intelligent ignition method and the intelligent ignition system for the blast furnace top: the remote control unit is matched with the site execution unit and the site monitoring unit to monitor and control the whole process of furnace top ignition after the blast furnace is in damping down, so that unmanned site management and operation are realized, human resources are saved, the working efficiency is improved, and potential safety hazards are avoided.
2. Technical proposal
In order to achieve the above object, the present invention adopts the following technical scheme.
As an ignition method of the present invention, comprising the steps of:
1) The blast furnace is damped, the furnace top is opened to be greatly diffused, the gas in the furnace top fan housing (5) is diffused and leaked through the gas ascending pipe (11) and the furnace top, and the gas in the gravity dust remover (8) is diffused and leaked through the gas descending pipe (9) and the furnace top;
2) The steam input valve is opened, high-pressure steam is input into the furnace top fan housing through the steam pipe, and residual gas in the gas rising pipe, the gas falling pipe and the gravity dust remover is cleaned;
3) Inputting the height parameter of the material surface after the damping down;
4) Opening an ignition hole valve and an observation hole valve;
5) The communication valve is opened, the gas detector detects the gas component in the gravity dust collector, and when the gas concentration is less than 24ppm, the ignition condition is met;
6) Igniting, closing a steam input valve, opening an ignition gun, respectively adjusting a gas input valve, an air input valve and an oxygen input valve of the ignition gun to enable the value of a gas flowmeter to be 1/12-1/10 of full scale, the value of the air flowmeter to be 1/6-1/5 of full scale, the value of the oxygen flowmeter to be 0, acquiring a temperature parameter by a thermocouple at the front end of the ignition gun, and executing ignition when the temperature is more than 500 ℃;
7) The fire is increased, the gas input valve, the air input valve and the oxygen input valve of the fire gun are respectively regulated again, so that the value of the gas flowmeter is 3/5-5/6 of the full scale, the value of the air flowmeter is 2/3-5/6 of the full scale, the value of the oxygen flowmeter is 1/4-1/2 of the full scale, and when the temperature is more than 1000 ℃, the fire is sent;
8) The method comprises the steps that a fire is sent, an ignition gun driver drives an ignition gun to be inserted into a furnace top fan housing from an ignition hole valve and extend forwards, a displacement encoder feeds back the stroke of the ignition gun in real time, and when the height of the front end of the ignition gun from a material surface in a furnace top cover reaches a preset height, the ignition gun driver stops running, the stroke L= (H-H)/sin phi of the ignition gun is the height of the displacement encoder from the material surface, H is the preset height of the front end of the ignition gun from the material surface, and phi is an included angle between a gun body of the ignition gun and the horizontal;
9) Monitoring the ignition site of the blast furnace top;
9.1 A flame monitor monitors whether the material level in the furnace top cover is in a burning state through the observation hole, if not, the flame monitor returns to the step 6), and if so, the burning state is maintained;
9.2 The gas alarm monitors the gas content outside the furnace in real time, when the gas concentration is more than 24ppm, the gas alarm sends out a blue flashing alarm signal, when the gas concentration is more than 40ppm, the gas alarm sends out an orange flashing alarm signal, when the gas concentration is more than 80ppm, the gas alarm sends out a red flashing alarm signal, and meanwhile, the alarm signal is transmitted to the remote control unit;
10 The remote control unit starts a program of closing an ignition hole, the gas input valve, the air input valve and the oxygen input valve are closed in sequence, the ignition gun driver drives the ignition gun to withdraw from the furnace, and the ignition hole valve and the observation hole valve are closed automatically;
11 The gas alarm detects the gas content outside the furnace to confirm whether the ignition hole valve and the observation hole valve are closed tightly.
Further, the step 9) further includes: the remote control unit acquires a real-time picture of the blast furnace top ignition site through the high-definition camera, and knows and grasps the overall situation of the site.
Further, the step 9) further includes: and judging whether the inside of the blast furnace is in a negative pressure state or not by observing the drifting gesture of the flexible colored ribbon at the upper part of the ignition hole valve.
As an ignition system of the present invention, comprising:
the remote control unit, the on-site execution unit and the on-site monitoring unit, the on-site execution unit comprises an observation hole valve, a communication valve, a gravity dust remover, a furnace top large diffusion, a steam input valve, an ignition gun driver, an ignition hole valve, a gas input valve, an air input valve and an oxygen input valve, wherein the observation hole valve is connected with an observation hole on a furnace top fan cover, the communication valve is connected with the gravity dust remover through a short pipe, the furnace top large diffusion is communicated into the furnace top fan cover through a gas rising pipe and is communicated with the gravity dust remover through a gas falling pipe, the steam input valve is communicated into the furnace top fan cover through a steam pipe, the ignition gun driver is arranged at one side of the ignition hole valve, the ignition hole valve is connected with an ignition hole of the furnace top fan cover, and the gas input valve, the air input valve and the oxygen input valve are respectively connected with an air inlet at the tail end of the ignition gun;
the on-site monitoring unit comprises a gas alarm, a flame monitor, a gas detector, a high-definition camera, a flexible color ribbon, a thermocouple, a gas flowmeter, an air flowmeter, an oxygen flowmeter and a displacement encoder, wherein the gas alarm and the flame monitor are arranged on a small platform adjacent to a valve of an observation hole, the gas detector is connected with a communication valve, the high-definition camera is arranged on a platform at the top of the furnace, the flexible color ribbon is hung at the lower part of an ignition gun driver, the thermocouple is connected at the front end of the ignition gun, the gas flowmeter, the air flowmeter and the oxygen flowmeter are respectively connected with a gas input valve, an air input valve and an oxygen input valve in series in a one-to-one correspondence manner, and the displacement encoder is arranged on the side surface of the ignition gun driver and is movably connected with the ignition gun.
Preferably, the observation hole valve, the ignition hole valve and the communication valve are all electric ball valves; the gas input valve, the air input valve and the oxygen input valve are all electric butterfly valves; the gas flowmeter, the air flowmeter and the oxygen flowmeter are all electronic flowmeters.
Further, the remote control unit comprises a processor, a data acquisition module and a target control module; the processor is respectively and electrically connected with the target control module and the data acquisition module, and the target control module is respectively and electrically connected with the execution mechanisms of the observation hole valve, the communication valve, the gravity dust remover, the furnace top large diffusion valve, the steam input valve, the ignition gun driver, the ignition hole valve, the gas input valve, the air input valve and the oxygen input valve of the on-site execution unit; the data acquisition module is respectively and electrically connected with a gas alarm, a flame monitor, a gas detector, a high-definition camera, a thermocouple, a gas flowmeter, an air flowmeter, an oxygen flowmeter and a sensing mechanism of a displacement encoder of the on-site monitoring unit.
Further, the included angle formed by connecting lines among the observation hole valve, the center of the furnace top fan housing and the ignition hole valve is 30-180 degrees.
3. Advantageous effects
According to the intelligent ignition method and the ignition system for the blast furnace top, provided by the invention, the remote control unit is coordinated with the on-site execution unit and the on-site monitoring unit to monitor and control the whole process of the furnace top ignition after the blast furnace is in damping down, so that unmanned on-site management and operation are realized, manpower resources are saved, the working efficiency is improved, and potential safety hazards are avoided.
Drawings
Fig. 1 is a block diagram of an ignition system of the present invention.
Fig. 2 is a layout of an on-site execution unit and an on-site monitoring unit of the present invention.
Fig. 3 is a partial device connection diagram of the present invention.
Detailed Description
Specific embodiments of the invention will be described in further detail below with reference to the drawings to facilitate a more readily apparent understanding of those skilled in the art.
Examples
The ignition method of the embodiment of the invention comprises the following steps:
1) The blast furnace is in damping down, the top large-emission 10 is opened through the operation of the remote control unit, the gas in the furnace top fan housing (5) is emitted through the gas ascending pipe (11) and the top large-emission, and the gas in the gravity dust remover (8) is emitted through the gas descending pipe (9) and the top large-emission;
2) By the operation of the remote control unit, the steam input valve 14 is opened, high-pressure steam is input into the furnace top fan housing 5 through the steam pipe 13, and residual gas in the gas rising pipe, the gas falling pipe and the gravity dust remover is cleaned;
3) The processor of the remote control unit inputs the height parameter of the material surface after the damping down;
4) Opening the ignition hole valve 16 and the observation hole valve 3 through the operation of the remote control unit, and confirming that the ignition hole valve and the observation hole valve are in a full-open state;
5) Through the operation of the remote control unit, the communication valve 7 is opened, the communication valve is confirmed to be in a full-open state, the gas detector 6 detects the gas component in the gravity dust collector 8, and when the gas concentration is less than 24ppm, the ignition condition is met;
6) The ignition is carried out, the steam input valve is closed through the operation of the remote control unit, the ignition gun 15, the gas input valve 19, the air input valve 18 and the oxygen input valve 25 are opened, the remote control unit respectively adjusts the gas input valve, the air input valve and the oxygen input valve of the ignition gun according to the fed-back flow data of gas, air and oxygen, so that the value of the gas flowmeter 20 is 1/12-1/10 of full scale, the value of the air flowmeter 22 is 1/6-1/5 of full scale, the value of the oxygen flowmeter 26 is 0, the temperature parameter acquired by the thermocouple 21 at the front end of the ignition gun is fed back to the remote control unit, and when the temperature is more than 500 ℃, the ignition is carried out;
7) The fire is increased, the gas input valve, the air input valve and the oxygen input valve of the fire gun are respectively regulated again through the operation of the remote control unit, so that the value of the gas flowmeter is 3/5-5/6 of full scale, the value of the air flowmeter is 2/3-5/6 of full scale, the value of the oxygen flowmeter is 1/4-1/2 of full scale, and when the temperature is confirmed to be more than 1000 ℃, the fire feeding is implemented;
8) The method comprises the steps that a fire is fed, an ignition gun driver 23 drives an ignition gun to be inserted into a furnace top fan housing from an ignition hole valve and extend forwards through operation of a remote control unit, a displacement encoder 24 feeds back the stroke of the ignition gun to the remote control unit in real time, when the height of the front end of the ignition gun from a material surface 4 in a furnace top cover reaches a preset height, the ignition gun driver stops running, the stroke L= (H-H)/sin phi of the ignition gun is achieved, wherein H is the height of the displacement encoder from the material surface, H is the preset height of the front end of the ignition gun from the material surface, and phi is the included angle between a gun body and the horizontal of the ignition gun;
in this embodiment, the preset height H of the front end of the ignition gun from the material surface is 300mm, the height H of the displacement encoder from the material surface is 1000mm, and the included angle Φ between the ignition gun body and the horizontal is 30 °, so the stroke of the ignition gun should be 1400mm.
9) Monitoring the ignition site of the blast furnace top;
9.1 The flame monitor 2 monitors whether the material level in the furnace top cover is in a burning state or not through the observation hole, and feeds back monitoring data to the remote control unit, if the material level is not in the burning state, the ignition system automatically returns to the step 6), and if the material level is in the burning state, the ignition system continues to maintain;
9.2 The gas alarm 1 monitors the gas content outside the furnace in real time, when the gas concentration is more than 24ppm, the gas alarm sends out a blue scintillation alarm signal, when the gas concentration is more than 40ppm, the gas alarm sends out an orange scintillation alarm signal, when the gas concentration is more than 80ppm, the gas alarm sends out a red scintillation alarm signal, and meanwhile, the alarm signal is transmitted to the remote control unit in real time;
10 The remote control unit starts a program of closing an ignition hole, the gas input valve, the air input valve and the oxygen input valve are closed in sequence, the ignition gun driver drives the ignition gun to withdraw from the furnace, the ignition hole valve and the observation hole valve are closed automatically, and the gas input valve, the air input valve, the oxygen input valve, the ignition hole valve and the observation hole valve are confirmed to be in a fully closed state;
11 The gas alarm detects the gas content outside the furnace to confirm whether the ignition hole valve and the observation hole valve are closed tightly.
Further, the step 9) further includes: the remote control unit acquires a real-time picture of the blast furnace top ignition site through the high-definition camera (12) to know and master the overall situation of the site.
Further, the step 9) further includes: by observing the drifting posture of the flexible ribbon 17 at the upper part of the ignition hole valve, namely: and judging whether the inside of the blast furnace is in a negative pressure state or not by judging whether the lower end of the flexible colored ribbon is in a state of being sucked by the ignition hole valve.
As an ignition system of the present invention, comprising:
the remote control unit, the on-site execution unit and the on-site monitoring unit, the on-site execution unit comprises an observation hole valve 3, a communication valve 7, a gravity dust remover 8, a furnace top large diffusion 10, a steam input valve 14, an ignition gun 15, an ignition gun driver 23, an ignition hole valve 16, a gas input valve 19, an air input valve 18 and an oxygen input valve 25, wherein the observation hole valve is connected with an observation hole on a furnace top fan cover, the communication valve is connected with the gravity dust remover through a short pipe, the furnace top large diffusion is communicated into the furnace top fan cover through a gas rising pipe 11 and is communicated with the gravity dust remover through a gas falling pipe 9, the steam input valve is communicated into the furnace top fan cover through a steam pipe 13, the ignition gun driver is arranged at one side of the ignition hole valve and is connected with an ignition hole of the furnace top fan cover, and the gas input valve, the air input valve and the oxygen input valve are respectively connected with an air inlet at the tail end of the ignition gun;
the on-site monitoring unit comprises a gas alarm 1, a flame monitor 2, a gas detector 6, a high-definition camera 12, a flexible color ribbon 17, a thermocouple 21, a gas flowmeter 20, an air flowmeter 22, an oxygen flowmeter 26 and a displacement encoder 24, wherein the gas alarm and the flame monitor are arranged on a small platform adjacent to a valve of a viewing hole, the gas detector is connected with a communication valve, the high-definition camera is arranged on a furnace top platform, the flexible color ribbon is hung on the lower part of a burning torch driver, the thermocouple is connected to the front end of the burning torch, the gas flowmeter, the air flowmeter and the oxygen flowmeter are respectively connected with a gas input valve, an air input valve and an oxygen input valve in series in a one-to-one correspondence manner, and the displacement encoder is arranged on the side surface of the burning torch driver and is movably connected with the burning torch.
Preferably, the observation hole valve, the ignition hole valve and the communication valve are all electric ball valves; the gas input valve, the air input valve and the oxygen input valve are all electric butterfly valves; the gas flowmeter, the air flowmeter and the oxygen flowmeter are all electronic flowmeters.
Further, the remote control unit comprises a processor, a data acquisition module and a target control module; the processor is respectively and electrically connected with the target control module and the data acquisition module, and the target control module is respectively and electrically connected with the execution mechanisms of the observation hole valve, the communication valve, the gravity dust remover, the furnace top large diffusion valve, the steam input valve, the ignition gun driver, the ignition hole valve, the gas input valve, the air input valve and the oxygen input valve of the on-site execution unit; the data acquisition module is respectively and electrically connected with a gas alarm, a flame monitor, a gas detector, a high-definition camera, a thermocouple, a gas flowmeter, an air flowmeter, an oxygen flowmeter and a sensing mechanism of a displacement encoder of the on-site monitoring unit.
Further, in this embodiment, the observation hole valve and the ignition hole valve are both located on the diameter connecting line of the furnace top fan cover and are arranged oppositely, so that air convection in the furnace top fan cover is facilitated, and a combustion supporting effect is achieved.
According to the intelligent ignition method and the ignition system for the blast furnace top, provided by the invention, the remote control unit is coordinated with the on-site execution unit and the on-site monitoring unit to monitor and control the whole process of the furnace top ignition after the blast furnace is in damping down, so that unmanned on-site management and operation are realized, manpower resources are saved, the working efficiency is improved, and potential safety hazards are avoided.
The present invention is not limited to the above-described embodiments, and various modifications to the technical solution thereof by those skilled in the art according to the inventive concept should fall within the scope of the claimed invention.
Claims (7)
1. The intelligent ignition method for the blast furnace top is characterized in that a remote control unit is coordinated and matched with a field execution unit and a field monitoring unit through a network to monitor and control the whole ignition process of the blast furnace top in real time, so that unmanned field management and operation are realized, and the method specifically comprises the following steps:
1) The blast furnace is damped, a furnace top large-scale diffusion (10) is opened, the gas in the furnace top fan housing (5) is leaked through a gas ascending pipe (11) and the furnace top large-scale diffusion, and the gas in the gravity dust remover (8) is leaked through a gas descending pipe (9) and the furnace top large-scale diffusion;
2) The steam input valve (14) is opened, high-pressure steam is input into the furnace top fan housing (5) through the steam pipe (13), and residual gas in the gas rising pipe, the gas falling pipe and the gravity dust remover is cleaned;
3) Inputting the height parameter of the material surface after the damping down;
4) Opening an ignition hole valve (16) and an observation hole valve (3);
5) The communication valve (7) is opened, the gas detector (6) detects the gas component in the gravity dust collector (8), and when the gas concentration is less than 24ppm, the ignition condition is satisfied;
6) Igniting, closing a steam input valve, opening an ignition gun, respectively adjusting a gas input valve (19), an air input valve (18) and an oxygen input valve (25) of the ignition gun to enable the value of a gas flowmeter (20) to be 1/12-1/10 of the full scale, enable the value of an air flowmeter (22) to be 1/6-1/5 of the full scale, enable the value of an oxygen flowmeter (26) to be 0, enable a thermocouple (21) at the front end of the ignition gun to acquire temperature parameters, and implementing ignition when the temperature is more than 500 ℃;
7) The fire is increased, the gas input valve, the air input valve and the oxygen input valve of the fire gun are respectively regulated again, so that the value of the gas flowmeter is 3/5-5/6 of the full scale, the value of the air flowmeter is 2/3-5/6 of the full scale, the value of the oxygen flowmeter is 1/4-1/2 of the full scale, and when the temperature is more than 1000 ℃, the fire is sent;
8) The ignition gun driver (23) drives the ignition gun (15) to be inserted into the furnace top fan housing (5) from the ignition hole valve and extend forwards, the displacement encoder (24) feeds back the stroke of the ignition gun in real time, when the height of the front end of the ignition gun from the material surface (4) in the furnace top cover reaches a preset height, the ignition gun driver stops running, the stroke L= (H-H)/sin phi of the ignition gun is realized, wherein H is the height of the displacement encoder from the material surface, H is the preset height of the front end of the ignition gun from the material surface, and phi is the included angle between the ignition gun body and the horizontal;
9) Monitoring the ignition site of the blast furnace top;
9.1 A flame monitor (2) monitors whether the material level in the furnace top cover is in a burning state or not through a viewing hole, if not, the process returns to the step 6), and if yes, the burning state is maintained;
9.2 The gas alarm (1) monitors the gas content outside the furnace in real time, when the gas concentration is more than 24ppm, the gas alarm sends out a blue scintillation alarm signal, when the gas concentration is more than 40ppm, the gas alarm sends out an orange scintillation alarm signal, when the gas concentration is more than 80ppm, the gas alarm sends out a red scintillation alarm signal, and meanwhile, the alarm signal is transmitted to the remote control unit;
10 The remote control unit starts a program of closing an ignition hole, the gas input valve, the air input valve and the oxygen input valve are closed in sequence, the ignition gun driver drives the ignition gun to withdraw from the furnace, and the ignition hole valve and the observation hole valve are closed automatically;
11 The gas alarm detects the gas content outside the furnace to confirm whether the ignition hole valve and the observation hole valve are closed tightly.
2. The ignition method according to claim 1, wherein the step 9) further comprises: the remote control unit acquires a real-time picture of the blast furnace top ignition site through the high-definition camera (12) to know and master the overall situation of the site.
3. The ignition method according to claim 1, wherein the step 9) further comprises: and judging whether the inside of the blast furnace is in a negative pressure state or not by observing the drifting gesture of the flexible colored ribbon (17) at the upper part of the ignition hole valve.
4. An intelligent ignition system for a blast furnace roof, wherein the ignition system is used for the ignition method of claim 1, comprising: the device comprises a remote control unit, a site execution unit and a site monitoring unit, wherein the site execution unit comprises an observation hole valve (3), a communication valve (7), a gravity dust remover (8), a furnace top large diffusion (10), a steam input valve (14), an ignition gun (15), an ignition gun driver (23), an ignition hole valve (16), a gas input valve (19), an air input valve (18) and an oxygen input valve (25), the observation hole valve is connected with an observation hole on a furnace top fan housing (5), the communication valve is connected with the gravity dust remover through a short pipe, the furnace top large diffusion is communicated into the furnace top fan housing through a gas rising pipe (11) and is communicated with the gravity dust remover through a gas falling pipe (9), the steam input valve is communicated into the furnace top fan housing through a steam pipe (13), the ignition gun driver is arranged at one side of the ignition hole valve and is connected with an ignition hole of the furnace top fan housing, and the gas input valve, the air input valve and the oxygen input valve are respectively connected with an air inlet at the tail end of the ignition gun;
the on-site monitoring unit comprises a gas alarm (1), a flame monitor (2), a gas detector (6), a high-definition camera (12), a flexible color ribbon (17), a thermocouple (21), a gas flowmeter (20), an air flowmeter (22), an oxygen flowmeter (26) and a displacement encoder (24), wherein the gas alarm and the flame monitor are arranged on a small platform adjacent to a valve of a viewing hole, the gas detector is connected with a communication valve, the high-definition camera is arranged on a platform at the top of the furnace, the flexible color ribbon is hung at the lower part of an ignition gun driver, the thermocouple is connected at the front end of the ignition gun, and the gas flowmeter, the air flowmeter and the oxygen flowmeter are respectively connected with a gas input valve, an air input valve and an oxygen input valve in series in a one-to-one correspondence manner, and the displacement encoder is arranged on the side surface of the ignition gun driver and is movably connected with the ignition gun.
5. An ignition system according to claim 4, wherein: the observation hole valve, the ignition hole valve and the communication valve are all electric ball valves; the gas input valve, the air input valve and the oxygen input valve are all electric butterfly valves; the gas flowmeter, the air flowmeter and the oxygen flowmeter are all electronic flowmeters.
6. An ignition system according to claim 4 or 5, characterized in that: the remote control unit comprises a processor, a data acquisition module and a target control module; the processor is respectively and electrically connected with the target control module and the data acquisition module, and the target control module is respectively and electrically connected with the execution mechanisms of the observation hole valve, the communication valve, the gravity dust remover, the furnace top large diffusion valve, the steam input valve, the ignition gun driver, the ignition hole valve, the gas input valve, the air input valve and the oxygen input valve of the on-site execution unit; the data acquisition module is respectively and electrically connected with a gas alarm, a flame monitor, a gas detector, a high-definition camera, a thermocouple, a gas flowmeter, an air flowmeter, an oxygen flowmeter and a sensing mechanism of a displacement encoder of the on-site monitoring unit.
7. An ignition system according to claim 6, wherein: the observation hole valve, the center of the furnace top fan housing and the ignition holeThe included angle formed by connecting lines between the valves is 30-180 DEG 0 。
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| CN202211045101.1A CN115386663B (en) | 2022-08-30 | 2022-08-30 | Intelligent ignition method and ignition system for blast furnace top |
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| CN202211045101.1A CN115386663B (en) | 2022-08-30 | 2022-08-30 | Intelligent ignition method and ignition system for blast furnace top |
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| CN115386663B true CN115386663B (en) | 2023-06-23 |
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