SRV furnace blast oxygen enrichment and coal gas enrichment coupling device

Abstract

The utility model discloses an SRV furnace blast oxygen enrichment and coal gas enrichment coupling device which comprises an SRV furnace, an oxygen enrichment and coal gas enrichment coupling device and a gas enrichment coupling device, a smelting cavity is formed in the SRV furnace, and the SRV furnace is provided with an oxygen inlet and a coal gas outlet which are communicated with the smelting cavity; the air blower is communicated between the oxygen generation assembly and the oxygen inlet; and the coal gas treatment assembly is communicated with the coal gas outlet. According to the SRV furnace blast oxygen enrichment and coal gas enrichment coupling device, the oxygen content in the SRV furnace can be increased, the combustion rate can be improved, the molten iron productivity is improved, and enrichment treatment of the coal gas discharged by the SRV furnace by the coal gas treatment assembly is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of energy-saving in smelting reduction ironmaking, and in particular to a coupling device for blast oxygen enrichment and coal gas enrichment of an SRV furnace. Background Art

[0002] Currently, blast furnace ironmaking holds a monopoly in the long-process steel production. Blast furnace ironmaking requires sintering, pelletizing, coking, and other processes to provide suitable raw materials and fuels. However, the energy consumption and pollutant emissions of these pre-ironmaking processes, including sintering, pelletizing, coking, and ironmaking, account for over 85% of the entire process. Therefore, the high energy consumption, high pollution, high emissions, and excess capacity of the long-process ironmaking process need to be eliminated. In line with the steel industry's energy conservation and emission reduction requirements, it is crucial to change the raw material and fuel structure of steelmaking processes and gradually shift from traditional processes to a streamlined steel production process.

[0003] The smelting-reducing ironmaking process is an important process route for non-blast furnace ironmaking. It is a typical short-process ironmaking production process with the characteristics of low cost, low energy consumption, low carbon, and low emissions. Smelting-reducing ironmaking uses an SRV furnace (Smelting-Reducing Vessel, SRV for short). Under normal circumstances, hot blast (hot air) is blown into the SRV furnace through a hot blast lance. The secondary combustion rate of the SRV furnace is an important factor affecting the molten iron smelting. However, the existing gas entering the SRV furnace has insufficient oxygen content, resulting in a low combustion rate, thereby reducing the molten iron productivity and being unfavorable for the enrichment treatment of the coal gas in the SRV furnace. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a coupled device for oxygen enrichment and coal gas enrichment in an SRV furnace. This device increases the oxygen content within the SRV furnace, thereby improving the combustion rate and thus the molten iron production rate, and facilitates the enrichment of the coal gas discharged from the SRV furnace by the coal gas treatment component.

[0005] According to an embodiment of the present application, an SRV furnace blast oxygen enrichment and coal gas enrichment coupling device includes: an SRV furnace, wherein a smelting chamber is formed in the SRV furnace, and the SRV furnace is provided with an oxygen inlet and a coal gas outlet connected to the smelting chamber; an oxygen production component and a blower, wherein the blower is connected between the oxygen production component and the oxygen inlet; and a coal gas treatment component, wherein the coal gas treatment component is connected to the coal gas outlet.

[0006] According to an embodiment of the present application, an SRV furnace blast oxygen enrichment and coal gas enrichment coupling device is provided, by providing an oxygen production component and a blower, so as to increase the oxygen content of the gas through the oxygen production component, and the blower is connected between the oxygen production component and the oxygen inlet, so as to use the blower to blow gas with a higher oxygen content into the SRV furnace. In this way, when the energy medium in the SRV furnace is burned, the oxygen content in the SRV furnace increases, which is beneficial to improving the combustion rate, thereby improving the molten iron productivity, and is beneficial to the coal gas treatment component to enrich the coal gas discharged from the SRV furnace.

[0007] According to some embodiments of the present application, an SRV furnace blast oxygen enrichment and coal gas enrichment coupling device, the oxygen production component includes: an oxygen generator and a flame arrester, and the flame arrester is connected between the oxygen generator and the blower.

[0008] According to an SRV furnace blast oxygen enrichment and coal gas enrichment coupling device in some embodiments of the present application, the oxygen production component further includes an oxygen mixer, which is connected between the flame arrester and the blower.

[0009] According to an SRV furnace blast oxygen enrichment and coal gas enrichment coupling device in some embodiments of the present application, the oxygen production component further includes: a quick shut-off valve, which is connected between the oxygen generator and the flame arrester, and the quick shut-off valve is suitable for communication connection with the control component.

[0010] According to an SRV furnace blast oxygen enrichment and coal gas enrichment coupling device in some embodiments of the present application, the oxygen production component further includes: a flow regulating valve and a flow meter, and the flow regulating valve and the flow meter are sequentially connected between the oxygen generator and the quick shut-off valve.

[0011] According to an SRV furnace blast oxygen enrichment and coal gas enrichment coupling device in some embodiments of the present application, the oxygen production component also includes: a safety valve, which is connected between the flow regulating valve and the flow meter, and the safety valve is suitable for communication connection with the control component.

[0012] According to some embodiments of the present application, an SRV furnace blast oxygen enrichment and coal gas enrichment coupling device, the coal gas processing component includes: a cooler and a coal gas desulfurization device, and the cooler is connected between the coal gas outlet and the coal gas desulfurization device.

[0013] According to an SRV furnace blast oxygen enrichment and coal gas enrichment coupling device in some embodiments of the present application, the coal gas processing component further includes: a heat exchanger connected between the cooler and the coal gas desulfurization device.

[0014] According to an SRV furnace blast oxygen enrichment and coal gas enrichment coupling device in some embodiments of the present application, the coal gas processing component further includes: a coal gas decarbonization device, which is connected to the coal gas desulfurization device and is located downstream of the coal gas desulfurization device.

[0015] According to an SRV furnace blast oxygen enrichment and coal gas enrichment coupling device in some embodiments of the present application, the coal gas processing component further includes: a dust collector connected between the heat exchanger and the coal gas desulfurization device.

[0016] Additional aspects and advantages of the present application will be given in part in the following description and in part will become obvious from the following description or will be learned through practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 A schematic diagram of a coupling device for oxygen blast enrichment and coal gas enrichment in an SRV furnace according to some embodiments of the present application;

[0019] Figure 2 Schematic diagram of an oxygen production assembly according to some embodiments of the present application.

[0020] Reference numerals:

[0021] An SRV furnace blast oxygen enrichment and coal gas enrichment coupling device 10;

[0022] SRV furnace 1; melting chamber 11; oxygen inlet 12; gas outlet 13;

[0023] Oxygen generator 21; filter 22; flow regulating valve 23; safety valve 24; flow meter 25; quick shut-off valve 26; flame arrester 27; oxygen mixer 28; oxygen pipeline 29;

[0024] Blower 3; gas processing component 4; cooler 41; heat exchanger 42; dust collector 43; gas desulfurization device 44; gas decarbonization device 45. DETAILED DESCRIPTION

[0025] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0026] In this article, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also include elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the statement "comprising a ..." do not exclude the presence of other identical elements in the process, method, article or equipment comprising the elements. The term "two or more" includes two or more than two cases.

[0027] Please refer to the following Figure 1-2 An SRV furnace blast oxygen enrichment and coal gas enrichment coupling device 10 according to an embodiment of the present application is described.

[0028] like Figure 1 As shown, an SRV furnace blast oxygen enrichment and coal gas enrichment coupling device 10 according to an embodiment of the present application includes: an SRV furnace 1, an oxygen production component 2, a blower 3 and a coal gas treatment component 4.

[0029] like Figure 1 As shown, a smelting chamber 11 is formed in the SRV furnace 1, and the SRV furnace 1 is provided with an oxygen inlet 12 and a gas outlet 13 connected to the smelting chamber 11, the blower 3 is connected between the oxygen production component 2 and the oxygen inlet 12, and the gas processing component 4 is connected to the gas outlet 13.

[0030] It is understandable that the oxygen production component 2 may include a structure capable of producing oxygen, such as an oxygen generator 21. In this way, the air can be produced by the oxygen production component 2 to increase the oxygen content in the air, and then the blower 3 blows the gas with a higher oxygen content into the SRV furnace 1 to facilitate combustion of the gas with a higher oxygen content in the SRV furnace 1.

[0031] In this way, when the energy medium in the SRV furnace 1 is burning, the oxygen content in the SRV furnace 1 increases, which is beneficial to improving the combustion rate, thereby improving the molten iron productivity.

[0032] After the gas is burned in the SRV furnace 1 , the SRV furnace 1 will discharge coal gas. At this time, the coal gas enters the coal gas processing component 4 so that the coal gas processing component 4 can enrich the coal gas, thereby achieving low-carbon production.

[0033] According to an SRV furnace blast oxygen enrichment and coal gas enrichment coupling device 10 of an embodiment of the present application, an oxygen production component 2 and a blower 3 are provided to increase the oxygen content of the gas through the oxygen production component 2, and the blower 3 is connected between the oxygen production component 2 and the oxygen inlet 12, so that the blower 3 can be used to blow the gas with a higher oxygen content into the SRV furnace 1. In this way, when the energy medium in the SRV furnace 1 is burned, the oxygen content in the SRV furnace 1 increases, which is beneficial to improving the combustion rate, thereby improving the molten iron productivity, and is beneficial to the coal gas treatment component 4 to enrich the coal gas discharged from the SRV furnace 1.

[0034] In some embodiments, as Figure 2 As shown, the oxygen production assembly 2 includes: an oxygen generator 21 and a flame arrester 27 , and the flame arrester 27 is connected between the oxygen generator 21 and the blower 3 .

[0035] Thus, oxygen can be produced by the oxygen generator 21 to increase the oxygen content in the gas, and the flame arrester 27 can effectively prevent the gas temperature downstream of the oxygen generator 21 from being too high and causing flame problems, thereby protecting the blower 3 and further enhancing the safety of the oxygen production component 2.

[0036] In some implementations, the flame arrester 27 has a flame arrester section made of copper, and the short tubes at both ends of the flame arrester 27 are made of 06Cr19Ni10, so that the flame arrester 27 can effectively prevent the gas temperature downstream of the oxygen generator 21 from being too high and causing flame problems.

[0037] In some embodiments, as Figure 2 As shown, the oxygen production assembly 2 further includes an oxygen mixer 28, which is connected between the flame arrester 27 and the blower 3. Thus, by providing the oxygen mixer 28, the oxygen can be homogeneously mixed when entering the SRV furnace 1 through the oxygen mixer 28.

[0038] In some implementations, the oxygen mixer 28 is connected to the oxygen inlet 12 through the oxygen pipeline 29, and nozzles at different angles may be provided inside the oxygen mixer 28. After the gas enters the oxygen mixer 28, it may be sprayed into the oxygen pipeline 29 through multiple nozzles at different angles, so that the oxygen in the gas can be better mixed in the oxygen pipeline 29.

[0039] In some embodiments, as Figure 2 As shown, the oxygen production component 2 further includes a quick shut-off valve 26 , which is connected between the oxygen production machine 21 and the flame arrester 27 , and is adapted to be in communication with the control component.

[0040] Therefore, by setting up the quick shut-off valve 26, and the quick shut-off valve 26 is suitable for communicating with the control component, the user can control the quick shut-off valve 26 through the control component to control the on-off between the oxygen generator 21 and the flame arrester 27, so as to improve the safety of the oxygen production component 2.

[0041] In some embodiments, as Figure 2 As shown, the oxygen concentrator assembly 2 further includes a flow control valve 23 and a flow meter 25, which are sequentially connected between the oxygen concentrator 21 and the quick shut-off valve 26. Thus, the flow control valve 23 and the flow meter 25 are provided to facilitate measurement of the flow rate of the gas discharged from the oxygen concentrator 21, and the flow control valve 23 can control the flow rate of the gas discharged from the oxygen concentrator 21.

[0042] In some embodiments, as Figure 2 As shown, the oxygen production component 2 further includes a safety valve 24 , which is connected between the flow regulating valve 23 and the flow meter 25 , and is suitable for communication connection with the control component.

[0043] Therefore, by setting up the safety valve 24, and the safety valve 24 is suitable for communicating with the control component so that the user can control the safety valve 24 through the control component to control the on-off between the flow regulating valve 23 and the flow meter 25, the system can be safely released when overpressure occurs, thereby improving the safety of the oxygen production component 2.

[0044] In some embodiments, as Figure 1 As shown, the gas processing assembly 4 includes a cooler 41 and a gas desulfurization device 44. The cooler 41 is connected between the gas outlet 13 and the gas desulfurization device 44. Thus, the gas discharged from the gas outlet 13 can be cooled by the cooler 41. The cooled gas can then enter the gas desulfurization device 44 for desulfurization, thereby reducing the sulfide content in the exhaust gas ultimately discharged.

[0045] In some embodiments, as Figure 1 As shown, the coal gas processing assembly 4 further includes: a heat exchanger 42 , which is connected between the cooler 41 and the coal gas desulfurization device 44 .

[0046] Thus, the coal gas discharged from the heat exchanger 42 and the cooler 41 can be heat exchanged to further reduce the temperature of the coal gas, and then the cooled coal gas can enter the coal gas desulfurization device 44 for desulfurization treatment, thereby reducing the sulfide content in the exhaust gas finally discharged.

[0047] In some embodiments, as Figure 1 As shown, the gas processing assembly 4 further includes a gas decarbonization device 45, which is connected to the gas desulfurization device 44 and is located downstream of the gas desulfurization device 44. Thus, the gas discharged from the gas outlet 13 can be cooled by the cooler 41. The cooled gas can first enter the gas desulfurization device 44 for desulfurization, and then enter the gas decarbonization device 45 after passing through the gas desulfurization device 44, thereby achieving decarbonization of the gas and enriching the SRV furnace gas.

[0048] In some embodiments, as Figure 1 As shown, the coal gas processing assembly 4 further includes: a dust collector 43 , which is connected between the heat exchanger 42 and the coal gas desulfurization device 44 .

[0049] Therefore, by providing the dust collector 43 , the coal gas can be dusted by the dust collector 43 after passing through the heat exchanger 42 , so as to reduce dust and impurities in the gas.

[0050] The following is combined with Figure 1-2 A specific embodiment of the SRV furnace blast oxygen enrichment and coal gas enrichment coupling device 10 of the present application is described as follows:

[0051] An SRV furnace blast oxygen enrichment and coal gas enrichment coupling device 10 is used for a non-blast furnace ironmaking process, and an SRV furnace blast oxygen enrichment and coal gas enrichment coupling device 10 includes an SRV furnace 1, an oxygen production component 2, a blower 3 and a coal gas treatment component 4, the oxygen production component 2 includes: an oxygen production machine 21, a filter 22, a flow regulating valve 23, a safety valve 24, a flow meter 25, a quick shut-off valve 26, a flame arrester 27, an oxygen mixer 28 and an oxygen pipeline 29; the coal gas treatment component 4 includes: a cooler 41, a heat exchanger 42, a dust collector 43, a coal gas desulfurization device 44 and a coal gas decarbonization device 45.

[0052] The economic purity of oxygen produced by the oxygen concentrator 21 is 80%, and the pressure is 15kPa to 45kPa. After the oxygen concentrator produces gas with a high oxygen content, the gas passes through the filter 22, the flow regulating valve 23, the safety valve 24, the flow meter 25, the quick shut-off valve 26, the flame arrester 27, the oxygen mixer 28 and the oxygen pipeline 29 and enters the suction port of the blower 3. After being pressurized by the blower 3, the gas is sent into the SRV furnace through the oxygen inlet 12 at the top of the SRV furnace, so that the energy medium undergoes an oxidation-reduction reaction in the SRV furnace to produce a large amount of coal gas, where the energy medium can be coal, etc.

[0053] The coal gas is discharged from the coal gas outlet 13 and is enriched and purified by the cooler 41, the heat exchanger 42, the dust collector 43, the coal gas desulfurization device 44, and the coal gas decarbonization device 45. The calorific value of the enriched coal gas is greatly improved, and it can be used as high calorific value coal gas for power generation, or it can be recycled back to the SRV furnace for resource utilization.

[0054] Furthermore, the oxygen concentrator 21 generally adopts a vacuum pressure swing adsorption device to prepare oxygen, the maximum working pressure of the filter 22 is 55kPa, the mesh size is 0.16mm (80 mesh), the shell is made of stainless steel, the internal parts are made of copper alloy or copper, and the filter screen is made of nickel-copper alloy to prevent impurities from entering the subsequent system and improve the service life of the equipment; the flow regulating valve 23 can be dynamically adjusted according to the indication of the flow meter 25, and the material is stainless steel; the flow meter 25 should preferably use an orifice flowmeter or a mass flowmeter, which requires temperature and pressure correction, instantaneous and cumulative measurement, and the control component can be a main control room computer, which can be used to display the flow and pressure of the gas, and the material is stainless steel; the quick shut-off valve 26 should preferably use an air-open type, a solenoid valve and a proximity switch (single coil, usually not energized), and the control voltage of the quick shut-off valve 26 is AC 220V, and the switch status of the quick shut-off valve 26 can be displayed on the main control room computer, and the material is stainless steel. The above connected structures are all flange-connected.

[0055] Furthermore, the safety valve 24, quick-shut valve 26, and flame arrester 27 are safety features of the SRV furnace oxygen enrichment and gas enrichment coupling device 10. The safety valve 24 has a set pressure of 1.0 MPa. If the system overpressures, the valve automatically opens and safely releases oxygen. Its outlet pipe is led to a safe location, generally at least 4 meters above the operating surface. The quick-shut valve 26 and the blower 3 have an interlocking protection program. If the blower 3 poses a safety hazard, the quick-shut valve 26 quickly cuts off the oxygen supply, ensuring system safety. The flame arrester 27 has a copper flame-blocking section, and the short pipes at both ends of the flame arrester 27 are made of 06Cr19Ni10, effectively preventing flames downstream of the oxygen concentrator 21. The safety valve 24, flame arrester 27, and oxygen pipeline 29 are welded together.

[0056] Furthermore, oxygen mixer 28 is an oxygen mixing component of the SRV furnace's blast oxygen enrichment and coal gas enrichment coupling device 10, ensuring homogeneous mixing of oxygen entering oxygen pipeline 29. Gas enters oxygen mixer 28 through a dedicated interface. Oxygen mixer 28 is equipped with nozzles at different angles to ensure that the gas is evenly mixed before entering blower 3. The mixed gas is pressurized by blower 3 and then fed into the SRV furnace, achieving the oxygen enrichment goal of the non-blast furnace ironmaking production system.

[0057] Furthermore, blower 3 is a centrifugal blower. The lower portion of the SRV furnace is an upright cylindrical barrel, connected to the gas chamber of the upper cylindrical barrel via a conical transition. During normal SRV furnace operation, preheated ore powder, granular coal, and flux are fed into the molten iron bath. The volatile components in the coal are cracked into CO and H2, and the carbon is dissolved into the molten iron. The iron oxides in the charge are reduced by dissolved carbon to CO and molten iron. The gangue in the iron ore, the flux, and the ash in the coal powder are fused to form slag. The coal gas generated during the smelting process combusts with oxygen to produce high-temperature flue gas (referred to as SRV furnace gas in this application).

[0058] Furthermore, cooler 41 primarily recovers waste heat from high-temperature coal gas during smelting, lowers exhaust gas temperature, and facilitates flue gas purification. Cooler 41 typically utilizes a combination of forced circulation and natural convection to recover waste heat and lower flue gas temperature. Heat exchanger 42 typically utilizes a waste heat boiler system, employing a dual-channel, single-pressure, two-stage boiler and a superheater, facilitating safe gas transmission.

[0059] Dust collector 43 uses low-pressure pulse jet bag dust collector, and multiple boxes are set according to the gas volume. The filtering area of a single box is 1400m 2 The bag filters are typically arranged in two rows, using external filter bags. The maximum operating pressure for coal gas dust removal is 0.1 MPa, and the maximum operating temperature is ≤280°C. The coal gas desulfurization unit 44 utilizes a single-tower design using a wet oxidation desulfurization process, achieving an H2S removal efficiency of ≥97% and a COS and other organic sulfur removal efficiency of ≥55%. The coal gas decarbonization unit 45 utilizes a wet-process alcohol-ammonia or aqueous ammonia solution for carbon capture. The absorption towers utilize a dual-tower design, with one tower performing adsorption for carbon capture and the other for absorption and regeneration during normal production. The carbon capture recovery rate is ≥90%, and the CO2 purity is ≥95%.

[0060] Furthermore, the oxygen production component 2 and the coal gas treatment component 4 are used in series. The supply of gas with a higher oxygen content by the oxygen production component 2 reduces the oxygen enrichment cost of an SRV furnace blast oxygen enrichment and coal gas enrichment coupling device 10, improves the production efficiency of the SRV furnace, and creates conditions for the coal gas enrichment of the SRV furnace; the calorific value of the coal gas of the SRV furnace after enrichment is greatly improved, which increases the application scenarios of the coal gas of the SRV furnace.

[0061] The utility model provides an SRV furnace blast oxygen enrichment and coal gas enrichment coupling device 10, which can effectively improve the SRV furnace molten iron smelting intensity and productivity, and achieve the system energy conservation and emission reduction goals. The oxygen production component 2 of the device is located upstream of the SRV furnace 1, that is, a pre-machine oxygen enrichment method is adopted, which has low oxygen enrichment cost and high operational flexibility. It is suitable for steel mills where high-pressure oxygen is not abundant. It is an economical, applicable, safe and reliable SRV furnace blast oxygen enrichment and coal gas enrichment coupling device 10.

[0062] Of course, the structural configuration in the above embodiment is only used as an example of a preferred embodiment and does not represent a limitation thereto.

[0063] It should be noted that, in the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0064] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

[0065] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0066] Obviously, those skilled in the art may make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if such changes and modifications fall within the scope of the claims of this specification and their equivalents, this specification is intended to include such changes and modifications.

Claims

1. A coupling device for oxygen enrichment and coal gas enrichment of an SRV furnace, characterized in that: include: An SRV furnace having a smelting chamber formed therein and provided with an oxygen inlet and a gas outlet communicating with the smelting chamber; an oxygen production component and a blower, wherein the blower is connected between the oxygen production component and the oxygen inlet; A gas processing component is connected to the gas outlet.

2. The SRV furnace blast oxygen enrichment and gas enrichment coupling device according to claim 1, characterized in that: The oxygen production component includes: an oxygen generator and a flame arrester, and the flame arrester is connected between the oxygen generator and the blower.

3. The SRV furnace blast oxygen enrichment and gas enrichment coupling device according to claim 2, characterized in that: The oxygen production component further includes an oxygen mixer, which is connected between the flame arrester and the blower.

4. The SRV furnace blast oxygen enrichment and gas enrichment coupling device according to claim 2, characterized in that: The oxygen production component further includes: a quick shut-off valve, which is connected between the oxygen generator and the flame arrester, and is suitable for communication connection with the control component.

5. The SRV furnace blast oxygen enrichment and gas enrichment coupling device according to claim 4, characterized in that: The oxygen production component further includes: a flow regulating valve and a flow meter, wherein the flow regulating valve and the flow meter are sequentially connected between the oxygen concentrator and the quick shut-off valve.

6. The SRV furnace blast oxygen enrichment and gas enrichment coupling device according to claim 5, characterized in that: The oxygen production component further includes a safety valve, which is connected between the flow regulating valve and the flow meter, and is suitable for communication connection with the control component.

7. A SRV furnace blast oxygen enrichment and gas enrichment coupling device according to any one of claims 1 to 6, characterized in that: The coal gas processing assembly includes: a cooler and a coal gas desulfurization device, and the cooler is connected between the coal gas outlet and the coal gas desulfurization device.

8. The SRV furnace blast oxygen enrichment and gas enrichment coupling device according to claim 7, characterized in that: The coal gas processing assembly further includes a heat exchanger connected between the cooler and the coal gas desulfurization device.

9. The SRV furnace blast oxygen enrichment and gas enrichment coupling device according to claim 8, characterized in that: The coal gas processing assembly further includes: a coal gas decarbonization device, which is communicated with the coal gas desulfurization device and is located downstream of the coal gas desulfurization device.

10. The SRV furnace blast oxygen enrichment and coal gas enrichment coupling device according to claim 9, characterized in that: The coal gas processing assembly further includes a dust collector connected between the heat exchanger and the coal gas desulfurization device.

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