Steel ladle pure oxygen combustion baking system and method

Abstract

The invention relates to the technical field of metallurgical industry production, in particular to a steel ladle pure oxygen combustion baking system and method.The steel ladle pure oxygen combustion baking system comprises a bundling jet ladle baking gun module, a ladle cover lifting module, a pipeline module, an instrument detection module, an electrical control module and an emergency lifting module; the cluster jet ladle baking gun module bakes a steel ladle based on a heating mode of combustion of oxygen and natural gas, the ladle cover lifting module is used for descending a ladle cover to cover the steel ladle, and the pipeline module is used for controlling oxygen and natural gas to be introduced into the cluster jet ladle baking gun module. The electrical control module controls the cluster jet ladle baking gun module, the ladle cover lifting module, the pipeline module and the instrument detection module to operate based on a PLC program, and steel ladle baking operation is carried out. Natural gas and oxygen serve as fuel and combustion media, flame penetration is strong, high-temperature airflow directly reaches the bottom of the steel ladle, the temperature difference between the ladle wall and the ladle bottom is small, the baking effect is good, about 50% of energy can be saved, the temperature of the steel ladle is increased to 100 DEG C or above, and the problem that the air combustion-supporting baking effect is poor is solved.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical industry production, and in particular to a ladle pure oxygen combustion baking system and method. Background Art

[0002] Ladle baking is an important part of steel production, mainly used for baking of new ladles, cold repairs, drying, turnover and online rapid heating. The effect of ladle baking has a great impact on the converter tapping temperature, converter age, steelmaking operation rate, etc., and will also affect the production stability and production cost of the steelmaking system. Ladle is a container for storing molten steel and is also a component of refining equipment. After the molten steel from the converter is loaded into the ladle, a large amount of heat will be lost during the transmission and casting process. Among them, the heat storage loss of the ladle lining is the main one, accounting for 45-50% of the total heat loss. Therefore, the ladle must be fully baked and heated before use.

[0003] Traditional ladle roasters have always used traditional burner heating, and the exhaust gas is directly discharged through the gap between the ladle cover and the ladle. The gap height exceeds 350mm, which is close to an open heating system. The flue gas temperature is 1100℃. A large amount of high-temperature flue gas can be seen on site being directly discharged into the workshop. The flame rigidity is not enough, and a large amount of flame floats outward, which not only causes a large amount of energy waste. At the same time, the existing baking cover has a low air and natural gas pressure, which causes serious flame floating, which not only aggravates the leakage of high-heat flue gas, but also easily causes a large temperature difference between the top and bottom of the ladle. If it is not handled properly, it will directly affect the quality of steelmaking and the service life of the ladle lining. Summary of the invention

[0004] The object of the present invention is to provide a ladle pure oxygen combustion baking system and method, aiming to solve the problem of poor air-assisted combustion baking effect.

[0005] To achieve the above-mentioned purpose, in a first aspect, the present invention provides a ladle pure oxygen combustion baking system, comprising a beam jet baking ladle gun module, a ladle cover lifting module, a pipeline module, an instrument detection module, an electrical control module and an emergency lifting module, wherein the electrical control module is respectively connected to the beam jet baking ladle gun module, the ladle cover lifting module, the pipeline module, the instrument detection module and the emergency lifting module, the beam jet baking ladle gun module is respectively connected to the ladle cover lifting module, the pipeline module and the instrument detection module, and the emergency lifting module is respectively connected to the beam jet baking ladle gun module, the ladle cover lifting module and the pipeline module;

[0006] The cluster jet ladle baking gun module is a combustion heating module for baking the ladle based on the mixed combustion of oxygen and natural gas;

[0007] The ladle cover lifting module drives the steel wire rope based on the winch to realize the ladle cover to be lowered to cover the ladle or to be raised to leave the ladle;

[0008] The pipeline module is used to connect and control the oxygen and natural gas to flow into the cluster jet baking gun module;

[0009] The instrument detection module is used to detect the safe operation of the pure oxygen combustion baking system online in real time, and monitor and display real-time data;

[0010] The electrical control module controls the operation of the cluster jet ladle baking gun module, the ladle cover lifting module, the pipeline module and the instrument detection module based on the PLC program to perform ladle baking operation;

[0011] The emergency lifting module is used to send out an audible and visual alarm and cut off natural gas and oxygen when the flame detector fails to detect the flame of the cluster jet baking gun module through infrared detection.

[0012] The cluster jet baking gun module has the functions of automatic ignition, aging detection and flame detection.

[0013] Wherein, the pipeline module includes a pipeline unit, an oxygen valve station unit, a gas valve station unit and a safety unit, and the pipeline unit is connected to the oxygen valve station unit, the gas valve station unit and the safety unit respectively;

[0014] The pipeline unit is used to introduce oxygen and natural gas into the cluster jet baking gun module;

[0015] The oxygen valve station unit supplies oxygen to the cluster jet baking gun module based on PLC program control;

[0016] The gas valve station unit controls the natural gas required by the cluster jet baking gun module based on PLC program control;

[0017] The safety unit is used to detect oxygen leakage and natural gas leakage in the pipeline unit, and to give an alarm and cut off the pipeline unit based on the detection situation.

[0018] Wherein, the safety unit comprises a detection subunit, a safety subunit and an interlocking subunit, and the detection subunit, the safety subunit and the interlocking subunit are connected;

[0019] The detection subunit is used to detect whether the pipeline unit leaks oxygen and natural gas, and obtain pipeline leakage data;

[0020] The safety subunit determines whether to issue an oxygen and natural gas leakage alarm based on the pipeline leakage data;

[0021] The interlocking subunit is used to interlock the pipeline module and cut off the ventilation of the pipeline unit based on the pipeline leakage data.

[0022] Wherein, the oxygen valve station unit includes a DM25 oxygen pipeline and a control gas source pipeline.

[0023] The gas valve station unit includes a DN50 gas pipeline, a DM25 nitrogen purge pipeline and a control gas source pipeline.

[0024] In a second aspect, the present invention further provides a ladle pure oxygen combustion baking method, comprising the following steps:

[0025] The electrical control module controls the ladle cover to descend and cover the ladle based on the PLC program and the winch driving the wire rope;

[0026] The electrical control module controls the pipeline module based on the PLC program to introduce oxygen and natural gas into the cluster jet baking gun module;

[0027] The cluster jet ladle baking gun module uses a mixture of oxygen and natural gas to burn for ladle baking;

[0028] The instrument detection module detects the safe operation of the pure oxygen combustion baking system in real time online, monitors and displays real-time data;

[0029] When the flame detector fails to detect the flame of the cluster jet baking gun module through infrared detection, an audible and visual alarm is issued through the emergency lifting module and the natural gas and oxygen are cut off.

[0030] The invention discloses a ladle pure oxygen combustion baking system, wherein the cluster jet ladle baking gun module is a combustion heating module based on oxygen and natural gas mixed combustion for ladle baking, adopts a burner and a gun body split design, the burner and the gun body can be replaced separately, reducing the later use cost, with automatic ignition and UV detection functions, automatic flame monitoring, baking temperature is optimized by computer simulation, the flame spraying distance is long, so that the temperature rise of the ladle bottom and the ladle wall tends to be consistent, the heating plate of the burner has a heat preservation material to prevent the gun body and the igniter from being burned by high temperature, and improve the service life of the gun body and the igniter; the ladle cover lifting module It includes an explosion-proof motor, a reducer, a rotating spindle, a control system and a ladle cover. A winch composed of a motor and a reducer is used to drive a steel wire rope to lower (rise) the ladle cover to cover (leave) the ladle; the pipeline module includes a pipeline and a pipeline valve, which is used to connect and control the oxygen and natural gas to enter the beam jet ladle baking gun module; the instrument detection module includes an online pressure sensor detection, an online flow detection, an oxygen concentration detection, a gas concentration detection, a UV flame detection and a temperature measurement detection module, which is used to detect the safe operation of the pure oxygen combustion baking system in real time online, monitor and display real-time data. When a natural gas (oxygen) leak occurs or the flame goes out during the ladle baking process, an alarm is issued, and the control system automatically starts the safety protection module through real-time data changes to cut off the gas source; the PLC of the electrical control module adopts the Siemens 1200 series, which can provide reliable logic control for the system. The programming software uses STEP7 SMART 2.0 or TIA Portal V 15.0; the host computer uses a touch screen. Use 1200 series; based on PLC program, control the operation of the cluster jet ladle baking gun module, the ladle cover lifting module, the pipeline module and the instrument detection module to perform ladle baking operation; when the flame detector infrared detection cannot detect the flame, it will issue an audible and visual alarm and cut off the natural gas and oxygen; the emergency lifting module is used to issue an audible and visual alarm and cut off the natural gas and oxygen when the flame detector infrared detection cannot detect the gun flame of the cluster jet ladle baking gun module; at the same time, the ladle cover lifting module is automatically started to lift the ladle cover lifting module to avoid a large amount of natural gas (oxygen) remaining in the middle ladle due to flameout, causing secondary ignition and flash explosion (explosion) accidents; the system uses natural gas and oxygen as fuel and combustion medium, the flame penetration is strong, the high-temperature airflow reaches the bottom of the ladle directly, the temperature difference between the ladle wall and the bottom of the ladle is small, the baking effect is good, and about 50% can be saved, the ladle temperature is increased to more than 100 degrees, and the problem of poor air-assisted combustion baking effect is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is a connection schematic diagram of a ladle pure oxygen combustion baking system provided by the present invention.

[0033] Figure 2 The present invention provides a schematic structural diagram of a cluster jet ladle baking gun module of a ladle pure oxygen combustion baking system.

[0034] Figure 3 It is a schematic diagram of a pipeline module of a ladle pure oxygen combustion baking system provided by the present invention.

[0035] Figure 4 It is a structural schematic diagram of an oxygen valve station unit of a ladle pure oxygen combustion baking system provided by the present invention.

[0036] Figure 5 It is a structural schematic diagram of a gas valve station unit of a ladle pure oxygen combustion baking system provided by the present invention.

[0037] Figure 6 It is a structural schematic diagram of a safety unit of a ladle pure oxygen combustion baking system provided by the present invention.

[0038] Figure 7 The present invention provides a flow chart of a ladle pure oxygen combustion baking method.

[0039] In the figure: 1- cluster jet baking gun module, 2- bag cover lifting module, 3- pipeline module, 4- instrument detection module, 5- electrical control module, 6- emergency lifting module, 7- pipeline unit, 8- oxygen valve station unit, 9- gas valve station unit, 10- safety unit, 11- detection subunit, 12- safety subunit, 13- interlocking subunit. DETAILED DESCRIPTION

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0041] See also Figure 1 to Figure 2 , Figure 1 This is a connection diagram of a ladle pure oxygen combustion baking system provided by the present invention. Figure 2 It is a structural schematic diagram of a clustered jet ladle baking gun module 1 of a ladle pure oxygen combustion baking system provided by the present invention. In a first aspect, the ladle pure oxygen combustion baking system comprises a clustered jet ladle baking gun module 1, a ladle cover lifting module 2, a pipeline module 3, an instrument detection module 4, an electrical control module 5 and an emergency lifting module 6. The electrical control module 5 is respectively connected to the clustered jet ladle baking gun module 1, the ladle cover lifting module 2, the pipeline module 3, the instrument detection module 4 and the emergency lifting module 6. The clustered jet ladle baking gun module 1 is respectively connected to the ladle cover lifting module 2, the pipeline module 3 and the instrument detection module 4. The emergency lifting module 6 is respectively connected to the clustered jet ladle baking gun module 1, the ladle cover lifting module 2 and the pipeline module 3;

[0042] The cluster jet ladle baking gun module 1 is a combustion heating module for baking the ladle based on a heating mode of oxygen plus natural gas combustion;

[0043] The ladle cover lifting module 2 drives the wire rope based on the winch to realize the ladle cover to be lowered to cover the ladle or to be lifted away from the ladle;

[0044] The pipeline module 3 is used to connect and control the oxygen and natural gas to flow into the cluster jet baking gun module 1;

[0045] The instrument detection module 4 is used to detect the safe operation of the pure oxygen combustion baking system online in real time, and monitor and display real-time data;

[0046] The electrical control module 5 controls the operation of the cluster jet ladle baking gun module 1, the ladle cover lifting module 2, the pipeline module 3 and the instrument detection module 4 based on the PLC program to perform ladle baking operation;

[0047] The emergency lifting module 6 is used to send out an audible and visual alarm and cut off the natural gas and oxygen when the flame detector infrared detection fails to detect the flame of the cluster jet baking gun module 1.

[0048] In this embodiment, the cluster jet ladle baking gun module 1 is a combustion heating module based on the mixed combustion of oxygen and natural gas for ladle baking. It adopts a split design of burner and gun body, and the burner and gun body can be replaced separately to reduce the later use cost. It is equipped with automatic ignition and UV detection functions, automatically monitors the flame, and the baking temperature is optimized by computer simulation. The flame spraying distance is long, so that the temperature of the bottom and wall of the ladle tends to be consistent. The heating plate of the burner has insulation material to prevent the gun body and igniter from being burned by high temperature, thereby improving the service life of the gun body and igniter; the ladle cover lifting module 2 includes an explosion-proof motor , reducer, rotating spindle, control system and ladle cover, a winch composed of a motor and a reducer is used to drive the wire rope to realize the ladle cover to descend (rise) and cover (leave) the ladle; the pipeline module 3 includes pipelines and pipeline valves, which are used to connect and control the oxygen and natural gas to enter the cluster jet ladle baking gun module 1; the instrument detection module 4 includes online pressure sensor detection, online flow detection, oxygen concentration detection, gas concentration detection, UV flame detection and temperature detection module, which are used to detect the safe operation of the pure oxygen combustion baking system in real time online, monitor and display real-time data. When natural gas (oxygen) leaks or the flame goes out during the ladle baking process, an alarm is issued, and the control system automatically starts the safety protection module through real-time data changes to cut off the gas source; the PLC of the electrical control module 5 adopts Siemens 1200 series, which can provide reliable logic control for the system. The programming software uses STEP7 SMART 2.0 or TIA Portal V 15.0 version; the host computer uses a touch screen. The 1200 series is used; based on the PLC program, the cluster jet ladle baking gun module 1, the ladle cover lifting module 2, the pipeline module 3 and the instrument detection module 4 are controlled to operate and perform ladle baking operation; when the flame detector infrared detection cannot detect the flame, an audible and visual alarm will be issued and the natural gas and oxygen will be cut off; the emergency lifting module 6 is used to issue an audible and visual alarm and cut off the natural gas and oxygen when the flame detector infrared detection cannot detect the gun flame of the cluster jet ladle baking gun module 1; at the same time, the ladle cover lifting module 2 is automatically started to lift the ladle cover lifting module 2 to avoid a large amount of natural gas (oxygen) remaining in the middle ladle due to flameout, causing a flash explosion (explosion) accident caused by secondary ignition; the system uses natural gas and oxygen as fuel and combustion medium, the flame penetration is strong, the high-temperature airflow reaches the bottom of the ladle directly, the temperature difference between the ladle wall and the bottom of the ladle is small, the baking effect is good, and about 50% can be saved, and the ladle temperature can be increased to more than 100 degrees, solving the problem of poor air-assisted baking effect.

[0049] See also Figures 3 to 5 , is a schematic diagram of a pipeline module of the ladle pure oxygen combustion baking system of the present invention, Figure 4 It is a structural schematic diagram of the oxygen valve station unit of the ladle pure oxygen combustion baking system of the present invention, Figure 5It is a structural schematic diagram of the gas valve station unit of the ladle pure oxygen combustion baking system of the present invention, Figure 6 It is a structural schematic diagram of the safety unit of the ladle pure oxygen combustion baking system of the present invention. The pipeline module 3 includes a pipeline unit 7, an oxygen valve station unit 8, a gas valve station unit 9 and a safety unit 10, and the pipeline unit 7 is connected to the oxygen valve station unit 8, the gas valve station unit 9 and the safety unit 10 respectively; the safety unit 10 includes a detection subunit 11, a safety subunit 12 and an interlocking subunit 13, and the detection subunit 11, the safety subunit 12 and the interlocking subunit 13 are connected;

[0050] The pipeline unit 7 is used to introduce oxygen and natural gas into the cluster jet baking gun module 1;

[0051] The oxygen valve station unit 8 supplies oxygen to the cluster jet baking gun module 1 based on PLC program control;

[0052] The gas valve station unit 9 controls the natural gas required by the cluster jet baking gun module 1 based on PLC program control;

[0053] The safety unit 10 is used to detect oxygen leakage and natural gas leakage in the pipeline unit 7, and to give an alarm and cut off the pipeline unit 7 based on the detection situation;

[0054] The detection subunit 1 is used to detect whether the pipeline unit 7 leaks oxygen and natural gas, and obtain pipeline leakage data;

[0055] The safety subunit 12 determines whether to issue an oxygen and natural gas leakage alarm based on the pipeline leakage data;

[0056] The interlocking subunit 13 is used to interlock the pipeline module 3 and cut off the ventilation of the pipeline unit 7 based on the pipeline leakage data.

[0057] In this embodiment, the pipeline unit 7 introduces oxygen and natural gas to the cluster jet baking gun module 1; the oxygen valve station unit 8 supplies oxygen to the cluster jet baking gun module 1 according to the PLC program control; the gas valve station unit 9 controls the natural gas required by the cluster jet baking gun module 1 based on the PLC program control; the safety unit 10 detects the oxygen leakage and natural gas leakage of the pipeline unit 7 through its detection subunit 1 to obtain pipeline leakage data, and the safety subunit 12 determines whether to issue an oxygen and natural gas leakage alarm based on the pipeline leakage data; finally, the interlocking subunit 13 interlocks the pipeline module 3 and cuts off the ventilation of the pipeline unit 7 based on the pipeline leakage data. Specifically, the pipeline leakage data is that when the natural gas leakage concentration exceeds the standard, an audible and visual alarm will be issued to remind the workers, and the natural gas and oxygen can be cut off. If the oxygen leakage concentration exceeds the standard, an audible and visual alarm will be issued to remind the workers, and the natural gas and oxygen can be cut off. It has the function of rapid cut-off in case of gas failure, power failure and low gas pressure: when the natural gas pressure is too low or too high, the natural gas cut-off valve and oxygen valve will be quickly closed, and an audible and visual alarm signal will be issued. When the power grid fails, the control system will automatically lock, the natural gas and oxygen cut-off valves will automatically close, and the natural gas and oxygen pipelines will be quickly cut off. The line classification implements short circuit, overload protection and power failure protection. It has flame detection and flameout alarm devices. When the flame red detection fails to detect the flame, an audible and visual alarm will be issued and the natural gas and oxygen quick-cut valves will be cut off. It has a long-open flame function, and the long-open flame is a separate gas circuit.

[0058] The oxygen valve station unit 8 includes a DM25 oxygen pipeline and a control gas source pipeline, and a 25 oxygen pipeline controls the oxygen supply of the baking gun. The oxygen valve station unit 8 is mainly composed of instruments such as a manual ball valve, a swirl flowmeter, a pneumatic ball valve, a pneumatic diaphragm regulating valve and a pressure gauge.

[0059] The gas valve station unit 9 controls the gas and auxiliary gas required by the cluster jet bag baking gun module 1 and is fully automatically controlled by PLC. The flow of the gas and auxiliary gas of each bag baking gun can be independently controlled.

[0060] The gas valve station unit includes 1 DN50 gas pipeline, 1 DM25 nitrogen purge pipeline and 1 control gas source pipeline, and 1 D50 gas pipeline controls the baking gun gas. Each gas pipeline is mainly composed of manual ball valve, pneumatic ball valve, pneumatic diaphragm regulating valve and pressure gauge and other instruments. A turbine flowmeter is set in the natural gas pipeline. Natural gas is equipped with an automatic fast shut-off valve, and the gas valve station is equipped with a natural gas leakage alarm system.

[0061] The present invention provides a ladle pure oxygen combustion baking system, ① adopting oxygen and natural gas to bake the ladle; ② natural gas and oxygen are controlled by valve stations separately; ③ automatic ignition, flame detection, temperature detection; ④ automatic adjustment of baking curve; ⑤ data statistics function; ⑥ oxygen leakage detection, natural gas leakage detection; ⑦ flame temperature: about 2700, flame length is adjustable; ⑧, ladle baking gun seat outer diameter: d600m, the gun seat is fixed on the ladle cover; ⑨ power supply 380V three-phase five-wire, power 9-15KW.

[0062] On-site medium parameter table:

[0063]

[0064] See also Figure 7 , Figure 7 : is a flow chart of the ladle pure oxygen combustion baking method of the present invention. In a second aspect, the present invention also provides a ladle pure oxygen combustion baking method, comprising the following steps:

[0065] The S1 electrical control module controls the ladle cover to descend and cover the ladle based on the PLC program and the winch-driven wire rope;

[0066] Specifically, the PLC of the electrical control module 5 adopts Siemens 1200 series, which can provide reliable logic control for the system. The programming software uses STEP7 SMART 2.0 or TIA Portal V 15.0 version; the host computer uses a touch screen. Use 1200 series; based on the PLC program, the operation of the cluster jet baking gun module 1, the ladle cover lifting module 2, the pipeline module 3 and the instrument detection module 4 is controlled. The ladle cover lifting module 2 includes an explosion-proof motor, a reducer, a rotating spindle, a control system and a ladle cover. A winch composed of a motor and a reducer is used to drive the wire rope to realize the ladle cover descending (rising) and covering (leaving) the ladle.

[0067] The S2 electrical control module controls the pipeline module based on the PLC program to introduce oxygen and natural gas into the cluster jet baking gun module;

[0068] Specifically, the pipeline module 3 includes pipelines and pipeline valves, which are used to connect and control the oxygen and natural gas to flow into the cluster jet baking gun module 1.

[0069] The S3 cluster jet ladle baking gun module is a combustion heating module that uses a mixture of oxygen and natural gas to bake the ladle;

[0070] Specifically, the cluster jet ladle baking gun module 1 is a combustion heating module for baking the ladle based on the mixed combustion of oxygen and natural gas. It adopts a separate design of the burner and the gun body, and the burner and the gun body can be replaced separately to reduce the later use cost. It has automatic ignition and UV detection functions, automatically monitors the flame, and the baking temperature is optimized by computer simulation. The flame spraying distance is long, so that the temperature of the bottom and the wall of the ladle tends to be consistent. The heating plate of the burner has insulation material to prevent the gun body and the igniter from being burned by high temperature, thereby increasing the service life of the gun body and the igniter.

[0071] The S4 instrument detection module detects the safe operation of the pure oxygen combustion baking system online in real time, monitors and displays real-time data;

[0072] Specifically, the instrument detection module 4 includes online pressure sensor detection, online flow detection, oxygen concentration detection, gas concentration detection, UV flame detection and temperature detection modules, which are used to detect the safe operation of the pure oxygen combustion baking system in real time online, monitor and display real-time data. When natural gas (oxygen) leaks or the flame goes out during the baking process, an alarm is issued, and the control system automatically starts the safety protection module through real-time data changes to cut off the gas source.

[0073] S5 When the flame detector infrared detection fails to detect the flame of the cluster jet baking gun module, an audible and visual alarm is issued through the emergency lifting module and the natural gas and oxygen are cut off.

[0074] The above disclosure is only a preferred embodiment of a ladle pure oxygen combustion baking system and method of the present invention. Of course, this cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiments and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A ladle pure oxygen combustion baking system, characterized in that: It includes a beam jet bag baking gun module, a bag cover lifting module, a pipeline module, an instrument detection module, an electrical control module and an emergency lifting module, wherein the electrical control module is respectively connected to the beam jet bag baking gun module, the bag cover lifting module, the pipeline module, the instrument detection module and the emergency lifting module, the beam jet bag baking gun module is respectively connected to the bag cover lifting module, the pipeline module and the instrument detection module, and the emergency lifting module is respectively connected to the beam jet bag baking gun module, the bag cover lifting module and the pipeline module; The cluster jet ladle baking gun module is a combustion heating module for baking the ladle based on the mixed combustion of oxygen and natural gas; The ladle cover lifting module drives the steel wire rope based on the winch to realize the ladle cover to be lowered to cover the ladle or to be raised to leave the ladle; The pipeline module is used to connect and control the oxygen and natural gas to flow into the cluster jet baking gun module; The instrument detection module is used to detect the safe operation of the pure oxygen combustion baking system online in real time, and monitor and display real-time data; The electrical control module controls the operation of the cluster jet ladle baking gun module, the ladle cover lifting module, the pipeline module and the instrument detection module based on the PLC program to perform ladle baking operation; The emergency lifting module is used to send out an audible and visual alarm and cut off natural gas and oxygen when the flame detector fails to detect the flame of the cluster jet baking gun module through infrared detection.

2. The ladle pure oxygen combustion baking system according to claim 1, characterized in that: The cluster jet baking gun module has the functions of automatic ignition, aging detection and flame detection.

3. The ladle pure oxygen combustion baking system according to claim 1, characterized in that: The pipeline module comprises a pipeline unit, an oxygen valve station unit, a gas valve station unit and a safety unit, and the pipeline unit is connected to the oxygen valve station unit, the gas valve station unit and the safety unit respectively; The pipeline unit is used to introduce oxygen and natural gas into the cluster jet baking gun module; The oxygen valve station unit supplies oxygen to the cluster jet baking gun module based on PLC program control; The gas valve station unit controls the natural gas required by the cluster jet baking gun module based on PLC program control; The safety unit is used to detect oxygen leakage and natural gas leakage in the pipeline unit, and to give an alarm and cut off the pipeline unit based on the detection situation.

4. The ladle pure oxygen combustion baking system according to claim 3, characterized in that: The safety unit comprises a detection subunit, a safety subunit and an interlocking subunit, wherein the detection subunit, the safety subunit and the interlocking subunit are connected; The detection subunit is used to detect whether the pipeline unit leaks oxygen and natural gas, and obtain pipeline leakage data; The safety subunit determines whether to issue an oxygen and natural gas leakage alarm based on the pipeline leakage data; The interlocking subunit is used to interlock the pipeline module and cut off the ventilation of the pipeline unit based on the pipeline leakage data.

5. The ladle pure oxygen combustion baking system according to claim 3, characterized in that: The oxygen valve station unit includes a DM25 oxygen pipeline and a control gas source pipeline.

6. The ladle pure oxygen combustion baking system according to claim 3, characterized in that: The gas valve station unit includes a DN50 gas pipeline, a DM25 nitrogen purge pipeline and a control gas source pipeline.

7. A ladle pure oxygen combustion baking method, applied to the ladle pure oxygen combustion baking system as claimed in claims 1-6, characterized in that: The following steps are involved: The electrical control module controls the ladle cover to descend and cover the ladle based on the PLC program and the winch driving the wire rope; The electrical control module controls the pipeline module based on the PLC program to introduce oxygen and natural gas into the cluster jet baking gun module; The cluster jet ladle baking gun module uses a mixture of oxygen and natural gas to burn for ladle baking; The instrument detection module detects the safe operation of the pure oxygen combustion baking system in real time online, monitors and displays real-time data; When the flame detector fails to detect the flame of the cluster jet baking gun module through infrared detection, an audible and visual alarm is issued through the emergency lifting module and the natural gas and oxygen are cut off.

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