Furnace top adjustable regenerative chamber blowing-type iron ore sintering zero-carbon ignition heat preservation device

Abstract

The utility model discloses a blowing-type iron ore sintering zero-carbon ignition heat preservation device with an adjustable furnace top and a regenerative chamber. The device comprises a sintering trolley, an ignition heat preservation furnace and a regenerative chamber device. And the ignition holding furnace is arranged above the sintering pallet. The heat storage chamber device comprises a chamber body, a heat storage ball, a heating element, a power supply element and a heating cable. Wherein the chamber body is arranged on the furnace top of the ignition holding furnace. And a plurality of heat storage balls are stacked in the chamber body. And the heating element is arranged on the inner side wall of the chamber body. The power supply element is arranged on the outer side of the ignition heat preservation furnace and connected with the heating element through a heating cable. The regenerative chamber device is used for carrying out electric heating ignition on a sintering material surface, clean and green zero-carbon ignition is realized, the carbon emission is obviously reduced compared with the prior art, the ignition is uniform, and the service life of a furnace lining of the ignition furnace is also effectively prolonged.

Description

Technical Field

[0001] The utility model relates to an iron ore sintering ignition and heat preservation device, in particular to a furnace top adjustable regenerator blast type iron ore sintering zero-carbon ignition and heat preservation device, belonging to the technical field of sintering. Background Art

[0002] During the sintering process, ignition is achieved through a high-temperature flame or atmosphere, igniting the coke powder within the material mixture on the sintering machine's trolley surface. This creates a high-temperature, uniform, red-hot combustion zone. Under the negative pressure of the exhaust from the lower flue, the combustion zone slowly descends, gradually completing the sintering of the sintering mixture at each height unit. Ultimately, when the combustion zone reaches the very bottom of the material layer, the sintering of the material layer carried by the trolley is complete. At this point, the trolley has also moved to the rear of the sintering machine, where it unloads the sintered ore for the next cooling stage. Ignition is a critical and crucial step in the sintering process. Uniform ignition, the quality of the resulting combustion zone, and the longevity of the ignition furnace all determine the quality, energy consumption, and operating efficiency of the entire sintering process.

[0003] The schematic diagram of the existing iron ore sintering ignition and holding furnace is as follows: Figure 1 、 Figure 2 As shown: After the sintering machine trolley is filled with sintering mixture through the nine-roller distributor, it slowly enters the hearth of the ignition furnace. It first enters the ignition section of the ignition furnace and is baked by the high-temperature flame formed by two rows of gas ignition burners in the ignition section. The coke powder in the mixture is gradually ignited to form a red-hot combustion zone; then it enters the insulation section of the ignition furnace and is baked by the medium-temperature flame formed by a row of insulation burners in the insulation section. The purpose is to keep the high-temperature sintered ore that has just been sintered warm and avoid the formation of cold and brittle powder ore due to rapid cooling.

[0004] One end of the top of the ignition furnace gas burner is connected to the gas pipeline. The gas used is generally industrial metallurgical by-product gas, such as blast furnace gas, converter gas, coke oven gas, high-speed mixed gas, high-coke mixed gas, etc., and a small part uses natural gas; the other end is connected to the air pipeline, which introduces the air blown in by the combustion blower and mixes with the gas to form a combustion flame.

[0005] The ignition furnace is generally installed parallel to the sintering machine trolley, located about 100-200mm above the sintering machine trolley railing. It consists of three beams (front beam, middle partition beam, rear beam), two furnace roofs (ignition section furnace roof, insulation section furnace roof) and four side walls (two ignition section side walls, two insulation section side walls). The total length is generally 7-9 meters, of which the ignition section is 3-4 meters and the insulation section is 4-5 meters.

[0006] With the introduction of my country's dual carbon strategy, reducing carbon emissions in the steel industry has become a key requirement for eliminating excess steel production capacity. As a key process in the steelmaking process, sintering carries a significant responsibility for carbon reduction. Currently, sintering still uses traditional coal gas ignition, which suffers from the following three major drawbacks.

[0007] 1. High carbon emissions: Since gas is used for ignition, carbon-containing combustibles such as CO and CH4 in the gas will generate CO2 after combustion, which will be drawn into the flue and then discharged, making the carbon emission index of the sintering process remain high.

[0008] 2. Uneven ignition: Since gas ignition is used, there is an obvious columnar flame. The temperatures of the outer flame, inner flame and flame core are different, and the temperature difference between the areas with flame and those without flame is also large. Therefore, it is very easy to cause uneven ignition of the iron ore sintering material surface, and local over-melting or over-raw phenomena often occur on the material surface, resulting in increased overall sintering energy consumption and increased carbon emissions.

[0009] 3. The life of the ignition furnace lining is short: Since gas ignition is used, the positions of the local high-temperature zone and the local low-temperature zone are relatively constant. The lining that is washed by the high-temperature zone flame for a long time is prone to cracking and peeling, resulting in a short life of the entire ignition furnace lining. Utility Model Content

[0010] To address the existing issues of high carbon emissions, uneven ignition, and short furnace lining life associated with traditional gas ignition in sintering, this utility model has developed a zero-carbon ignition and insulation device for iron ore sintering with an adjustable regenerator at the furnace top. This solution eliminates the gas burners in the traditional ignition and insulation furnace and replaces them with a regenerator device installed at the furnace top to electrically ignite the sintering material surface. This eliminates the need for additional fossil fuels like gas to ignite the sintering machine, achieving clean, green zero-carbon ignition and significantly reducing carbon emissions compared to existing technologies. Furthermore, the electric ignition is more uniform, effectively extending the life of the ignition furnace lining.

[0011] The utility model also adds a self-suction device on the top of the ignition and heat preservation furnace, through which the air outside the ignition and heat preservation furnace can be sucked into the furnace, and the sucked air is heated by a heat storage chamber device arranged on the air outlet side of the self-suction device, thereby achieving the purpose of hot air ignition when the air enters the furnace, that is, hot air ignition is introduced on the basis of the electric heating ignition of the sintering material surface by the heat storage chamber device, thereby further enhancing the uniformity of the material surface ignition.

[0012] The utility model also adds heat storage chamber height adjustment devices on both sides of the heat storage chamber device. Since the heat storage chamber height adjustment devices are connected to the heat storage chamber device, the material surface height of the heat storage balls in the heat storage chamber height adjustment devices can be flexibly adjusted according to the on-site working conditions, that is, the heat storage capacity of the furnace top heat storage chamber device can be adaptively adjusted, thereby enhancing the ignition and sintering effect.

[0013] The utility model also adds a biomass solid fuel distributor downstream of the existing sintering mixing distributor, through which the biomass solid fuel is sprayed onto the surface of the sintering mixture, thereby significantly reducing the ignition temperature of the sintering surface.

[0014] The utility model also adds a pure oxygen blowing device, through which pure oxygen is blown into the furnace of the ignition and holding furnace. The pure oxygen is mixed with the air in the furnace to form an oxygen-rich atmosphere, thereby further reducing the temperature of the combustion zone formed by ignition of biomass solid fuel or coke powder on the sintering material surface, thereby enhancing the ignition and sintering effect.

[0015] The utility model combines electric heat ignition, oxygen-enriched ignition, and biomass surface spraying ignition methods, and does not require additional consumption of fossil energy such as coal gas for ignition. Therefore, the carbon consumption in the iron ore sintering ignition link is almost zero, realizing zero-carbon ignition production in a true sense, and greatly reducing carbon emissions compared with existing technologies.

[0016] According to the implementation scheme of the utility model, a blast-type iron ore sintering zero-carbon ignition and heat preservation device with an adjustable furnace top regenerator is provided.

[0017] A zero-carbon ignition and heat preservation device for iron ore sintering with a blast-type regenerator and adjustable furnace roof comprises a sintering trolley, an ignition and heat preservation furnace, and a regenerator assembly. The ignition and heat preservation furnace is disposed above the sintering trolley. The regenerator assembly comprises a chamber body, heat storage balls, a heating element, a power supply element, and a heating cable. The chamber body is mounted on the roof of the ignition and heat preservation furnace. A plurality of heat storage balls are stacked within the chamber body. The heating element is mounted on the inner sidewall of the chamber body. The power supply element is disposed outside the ignition and heat preservation furnace and connected to the heating element via a heating cable.

[0018] In the present invention, the device also includes a self-suction device mounted on the ignition and heat-holding furnace. The self-suction device includes a load-bearing frame, a suction shaft, suction blades, and a suction motor. The load-bearing frame is mounted on the upper portion of the furnace roof of the ignition and heat-holding furnace. The suction shaft is centrally located within the load-bearing frame. The suction blades are mounted on the suction shaft. The suction motor is mounted on top of the load-bearing frame and connected to the upper end of the suction shaft. The heat storage chamber device is located on the air outlet side of the self-suction device.

[0019] In the present invention, a regenerator height adjustment device is provided on each side of the ignition and holding furnace. The regenerator height adjustment device comprises an adjustment chamber, an adjustment support, an adjuster, an adjustment rod, and heat storage balls for adjustment. The adjustment chamber is mounted on the side of the ignition and holding furnace and communicates with the regenerator body. The adjustment support is positioned at the lower portion of the adjustment chamber. The adjuster is positioned at the bottom portion of the adjustment chamber outside the adjustment chamber. The adjustment rod passes through the adjuster and is connected to the adjustment support. The adjustment chamber is loaded with a plurality of heat storage balls for adjustment, and the plurality of heat storage balls are positioned on the adjustment support.

[0020] In the present invention, a plurality of regenerator devices are sequentially arranged on the roof of the ignition and holding furnace along the running direction of the sintering trolley. Both sides of each regenerator device are equipped with a regenerator height adjustment device.

[0021] Preferably, along the running direction of the sintering trolley, the stacking height of the heat storage balls in the upstream heat storage chamber device is greater than or equal to the stacking height of the heat storage balls in the downstream heat storage chamber device.

[0022] In the present invention, a plurality of suction blades are connected to the suction shaft and are evenly distributed along the circumference of the suction shaft.

[0023] In the present invention, a plurality of self-suction devices are provided on the top of the ignition and holding furnace, and the plurality of self-suction devices are evenly distributed along the running direction and the width direction of the sintering trolley.

[0024] In the present invention, the device further includes a sintering mixture distributor and a biomass solid fuel distributor disposed above the sintering trolley. Along the direction of travel of the sintering trolley, the sintering mixture distributor and the biomass solid fuel distributor are disposed upstream of the ignition and holding furnace, with the sintering mixture distributor being located upstream of the biomass solid fuel distributor.

[0025] Preferably, the sintered mixture distributor and the biomass solid fuel distributor are both nine-roller distributors.

[0026] In the present invention, a pure oxygen injection device is also provided on the side of the ignition and holding furnace. The pure oxygen injection device comprises a pure oxygen pipeline and a pure oxygen nozzle. The pure oxygen pipeline is located outside the ignition and holding furnace. One end of the pure oxygen nozzle is connected to the pure oxygen pipeline, and the other end extends through the side wall of the ignition and holding furnace into the furnace.

[0027] Preferably, a plurality of pure oxygen blowing devices are respectively provided on both sides of the ignition and holding furnace, and the plurality of pure oxygen blowing devices are evenly distributed along the running direction of the sintering trolley.

[0028] In response to the problems of high carbon emissions, uneven ignition, and short life of the ignition furnace lining in the sintering ignition link using traditional gas ignition in the existing technology, the utility model has developed a furnace top adjustable heat storage chamber blast-type iron ore sintering zero-carbon ignition and insulation device by improving the existing technology and structural form. The utility model eliminates the gas burner of the traditional ignition and insulation furnace and replaces it with a heat storage chamber device set on the top of the ignition and insulation furnace. The device includes a chamber body, heat storage balls, heating elements, power supply elements, and heating cables. Among them, the chamber body is installed on the top of the ignition and insulation furnace and is closely connected to the ignition and insulation furnace. A plurality of heat storage balls are evenly stacked in the chamber body. The heating elements are installed on the inner wall of the chamber body and are connected to the heating cable. At the same time, the heating cable is connected to the external power supply element. By powering on, the interior of the heat storage chamber is heated, and the heat storage balls are allowed to store heat, thereby achieving the purpose of providing a high-temperature atmosphere for the sintering material surface for electric heating ignition. The utility model adopts a heat storage chamber device for electric ignition, and the sintering machine does not need to consume additional fossil energy such as gas, thereby realizing clean and green zero-carbon ignition, and carbon emissions are significantly reduced compared with the existing technology; moreover, electric ignition does not have the columnar flame in traditional gas ignition, so the high temperature, medium temperature and low temperature zones in the furnace of the traditional ignition and insulation furnace no longer exist, the ignition of the material surface is more uniform, and the quality is more guaranteed; similarly, since the columnar flame disappears, the adverse working condition of the ignition and insulation furnace lining being locally eroded by high temperature flames and flue gas for a long time is avoided, so the lining life of the ignition and insulation furnace is also effectively extended.

[0029] As a preferred embodiment, the present invention further adds a self-suction device to the ignition and heat preservation furnace, and the above-mentioned heat storage chamber device is located on the air outlet side of the self-suction device. The self-suction device includes a load-bearing frame, a suction shaft, suction blades, and a suction motor. The load-bearing frame is tightly mounted on the upper part of the furnace top of the ignition and heat preservation furnace, the suction shaft is mounted in the central position of the load-bearing frame, the suction blades are mounted on the suction shaft (preferably, multiple suction blades are evenly and symmetrically mounted on the suction shaft), the suction motor is mounted on the top of the load-bearing frame and connected to the suction shaft, and the suction motor is responsible for providing kinetic energy for the rotation of the suction shaft and the suction blades. Driven by the suction motor, the suction shaft drives the suction blades to rotate, thereby sucking air outside the ignition and holding furnace into the furnace, and heating the sucked air through the heat storage chamber device arranged on the air outlet side of the self-suction device, so as to achieve the purpose of hot air ignition when the air enters the furnace, that is, hot air ignition is introduced on the basis of the electric heating ignition of the sintering material surface by the heat storage chamber device, so as to further enhance the uniformity of the ignition of the material surface.

[0030] Further preferably, the present invention further includes a regenerator height adjustment device on both sides of the regenerator device (i.e., on both sides of the sintering trolley). The regenerator height adjustment device includes an adjustment chamber, an adjustment support plate, an adjuster, an adjustment rod, and adjustment heat storage balls. The adjustment chamber is closely connected to the furnace side of the ignition and holding furnace and communicates with the chamber body of the regenerator device on the furnace top. The interior of the adjustment chamber is filled with adjustment heat storage balls of a certain height. All adjustment heat storage balls are supported by the adjustment support plate, and the vertical height of the adjustment support plate can be freely raised and lowered by the adjuster (the adjuster can be equipped with a transmission device and connected to an external drive device) via the adjustment rod. In this way, by adjusting the lifting and lowering control of the support plate, the charge level of the regulating heat storage balls in the regenerator height adjustment devices on both sides of the ignition and holding furnace can be freely adjusted. When the charge level of the furnace-side regulating heat storage balls is higher than the charge level of the heat storage balls in the furnace-top regenerator device, the heat storage balls in the regenerator height adjustment device will roll toward the furnace roof, thereby increasing the thickness of the charge layer of the top regenerator balls and thereby enhancing the heat storage capacity of the furnace-top regenerator device. Conversely, when the charge level of the furnace-side regulating heat storage balls is lower than the charge level of the top regenerator balls, the heat storage balls in the furnace-top regenerator device will roll toward the regenerator height adjustment devices on both sides, thereby decreasing the charge layer thickness of the top regenerator balls and thereby weakening the heat storage capacity of the furnace-top regenerator device. Therefore, by flexibly adjusting the charge level of the regulating heat storage balls in the furnace-side regenerator height adjustment devices according to on-site operating conditions, it is possible to adaptively adjust the heat storage capacity of the furnace-top regenerator device, thereby enhancing the ignition and sintering effect.

[0031] In the present invention, multiple regenerators are sequentially arranged on the roof of the ignition and holding furnace along the direction of travel of the sintering trolley. Each regenerator is equipped with a regenerator height adjustment device on both sides. Based on the aforementioned analysis, by controlling the raising and lowering of the adjustment plates within the regenerator height adjustment devices on both sides of the different furnace sections of the ignition and holding furnace, the height of the regulating regenerator balls on both sides of the different furnace sections can be freely changed as needed, thereby achieving adaptive adjustment of the heat storage capacity of the regenerator devices on the roof of different furnace sections, resulting in more uniform ignition of the material surface and better quality assurance.

[0032] Generally speaking, along the direction of travel of the sintering trolley, the high-temperature atmosphere or heat demand required at the initial ignition position of the ignition section is the greatest. Thereafter, the high-temperature atmosphere or heat demand required by each section of the ignition and holding furnace tends to remain constant or gradually decrease. Therefore, the present invention sets the stacking height of the heat storage balls in the upstream regenerator device at the top of the ignition and holding furnace to be greater than or equal to the stacking height of the heat storage balls in the downstream regenerator device, thereby avoiding the phenomenon of local over-melting or over-cooking of the material surface due to uneven ignition in different furnace sections. During the production process, the ignition and holding furnace can be set to two temperature values: the ignition temperature corresponding to the ignition section and the holding temperature corresponding to the holding section. Generally, the ignition temperature is higher than the holding temperature.

[0033] In order to further improve the uniformity of the ignition of the material surface, the utility model sets a plurality of self-suction devices on the top of the ignition and holding furnace, and the plurality of self-suction devices are evenly distributed along the running direction and width direction of the sintering trolley. Figure 3 and Figure 5 For example, in order to make the air suction at each position on the ignition and holding furnace more sufficient and the subsequent hot air ignition more uniform, the utility model evenly arranges multiple self-suction devices into 4 rows along the running direction of the sintering trolley, and at the same time, evenly arranges multiple self-suction devices into 4 rows along the width direction of the sintering trolley.

[0034] This utility model also adds a biomass solid fuel distributor (e.g., a nine-roller distributor) downstream of the existing sinter mix distributor. This distributor sprays granular biomass solid fuel onto the sinter mix surface, blanketing the surface with a layer of biomass solid fuel. This significantly reduces the ignition temperature of the sinter mix. This coating significantly lowers the temperature at which the char powder on the sinter mix ignites, forming the combustion zone. For example, it can be reduced from 1150°C to 800°C or even lower (e.g., 700°C, 600°C, or 500°C).

[0035] Furthermore, the present invention eliminates the existing sintering machine's top air duct system and replaces it with a pure oxygen injection device. The pure oxygen injection device consists of a pure oxygen pipe and a pure oxygen nozzle, wherein the pure oxygen pipe is located outside the ignition and holding furnace (for example, outside the side wall), one end of the pure oxygen nozzle is tightly connected to the pure oxygen pipe, and the other end of the pure oxygen nozzle extends through the side wall of the ignition and holding furnace into the ignition and holding furnace. This arrangement allows pure oxygen to be blown into the ignition and holding furnace through the pure oxygen pipe and the pure oxygen nozzle. The pure oxygen mixes with the air in the furnace to form an oxygen-rich atmosphere, thereby further reducing the temperature of the biomass solid fuel or coke powder on the sintering material surface to form a combustion zone when it is ignited, for example, from 800°C to about 650°C, or from 700°C to about 570°C. The utility model improves the existing technology and structural form, combines electric heat ignition, oxygen-enriched ignition, and biomass surface spraying ignition methods, and develops an electric-based ignition and insulation device for iron ore sintering. During the ignition process, the sintering machine does not need to consume additional fossil energy such as coal gas, and the carbon consumption in the ignition link is almost zero, realizing clean and green zero-carbon ignition production in a true sense, and greatly reducing carbon emissions compared with existing technologies.

[0036] In the application, the width of the sintering trolley is 0.1-50m, preferably 0.2-30m, more preferably 0.3-20m, and further preferably 0.5-10m. The length of the sintering trolley is 0.1-30m, preferably 0.2-20m, more preferably 0.3-10m, and further preferably 0.5-8m.

[0037] Compared with the prior art, the present invention has the following beneficial technical effects:

[0038] 1. Low carbon emissions: Since the utility model adopts an ignition method that combines electric heat ignition, oxygen-enriched ignition and biomass surface spraying, the sintering machine does not need to consume additional fossil energy such as gas during the ignition process. That is, the carbon consumption of the iron ore sintering ignition link is almost zero, realizing clean and green zero-carbon ignition, and carbon emissions are significantly reduced compared with existing technologies.

[0039] 2. Uniform ignition: The utility model adopts a regenerator device and a self-suction device to ignite the sintering material surface. The regenerator device can provide a high-temperature atmosphere for the sintering material surface for electric thermal ignition. The self-suction device can inhale the air outside the ignition and heat-keeping furnace into the furnace and heat the inhaled air through the regenerator device, thereby achieving the purpose of hot air ignition when the air enters the furnace. That is, hot air ignition is introduced on the basis of electric thermal ignition of the sintering material surface by the regenerator device, thereby further enhancing the ignition uniformity of the sintering material surface.

[0040] Moreover, since the utility model adopts electric heat ignition, there is no columnar flame in traditional gas ignition, so the high temperature, medium temperature and low temperature zones in the furnace of the traditional ignition and holding furnace no longer exist, the ignition of the material surface is more uniform, and the quality is more guaranteed.

[0041] 3. Long service life of ignition furnace lining: Similarly, due to the disappearance of columnar flame, the ignition and holding furnace lining is avoided from being locally subjected to long-term harsh working conditions of high-temperature flame and flue gas erosion, so the service life of the ignition furnace lining is also effectively extended.

[0042] 4. The present invention also adds regenerator height adjustment devices on both sides of the regenerator device. Since the regenerator height adjustment devices are connected to the regenerator device, the material level of the regenerator balls in the regenerator height adjustment devices can be flexibly adjusted according to the on-site working conditions, that is, the heat storage capacity of the furnace top regenerator device can be adaptively adjusted, thereby enhancing the ignition and sintering effect.

[0043] In summary, the present invention effectively solves the defects and deficiencies of the prior art without causing any other negative impacts, and has low investment and operating costs. It can be expected to have high application value in the future market. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a simplified structural diagram of an existing iron ore sintering ignition and holding furnace;

[0045] Figure 2 This is a simplified structural diagram of the existing iron ore sintering distributor and ignition holding furnace;

[0046] Figure 3This is a structural diagram of the utility model of a blast-type iron ore sintering zero-carbon ignition and heat preservation device with an adjustable furnace top regenerator;

[0047] Figure 4 This is a top view of the heat storage chamber device and the heat storage chamber height adjustment device in the utility model;

[0048] Figure 5 This is a side view of the utility model equipped with a heat storage chamber device, a self-suction device, and a heat storage chamber height adjustment device;

[0049] Figure 6 This is a side view of the utility model equipped with a heat storage chamber device, a self-suction device, a heat storage chamber height adjustment device, and a pure oxygen blowing device;

[0050] Figure 7 This is another side view of the utility model equipped with a heat storage chamber device, a self-suction device, a heat storage chamber height adjustment device, and a pure oxygen blowing device;

[0051] Figure 8 This is a schematic structural diagram of the self-suction device in the utility model;

[0052] Figure 9 This is a schematic structural diagram of the self-suction device and the heat storage chamber device in the utility model;

[0053] Figure 10 It is a structural schematic diagram of the heat storage chamber height adjustment device in the utility model.

[0054] Reference numerals:

[0055] 1: Sintering trolley; 2: Ignition and holding furnace; 3: Regenerator device; 301: Chamber body; 302: Regenerator ball; 303: Heating element; 304: Power supply element; 305: Heating cable; 4: Self-suction device; 401: Load-bearing frame; 402: Suction shaft; 403: Suction blade; 404: Suction motor; 5: Regenerator height adjustment device; 501: Adjustment chamber; 502: Adjustment support plate; 503: Adjuster; 504: Adjustment rod; 505: Regenerator ball for adjustment; 6: Sintering mixture distributor; 7: Biomass solid fuel distributor; 8: Pure oxygen injection device; 801: Pure oxygen pipeline; 802: Pure oxygen nozzle. DETAILED DESCRIPTION

[0056] The technical solution of the present invention is illustrated below with examples, and the scope of protection requested by the present invention includes but is not limited to the following embodiments.

[0057] According to the implementation scheme of the utility model, a blast-type iron ore sintering zero-carbon ignition and heat preservation device with an adjustable furnace top regenerator is provided.

[0058] A furnace top adjustable heat storage chamber blast-type iron ore sintering zero-carbon ignition and heat preservation device, the device includes a sintering trolley 1, an ignition and heat preservation furnace 2, and a heat storage chamber device 3. The ignition and heat preservation furnace 2 is arranged above the sintering trolley 1. The heat storage chamber device 3 includes a chamber body 301, heat storage balls 302, heating elements 303, power supply elements 304, and heating cables 305. Among them, the chamber body 301 is installed on the furnace top of the ignition and heat preservation furnace 2. A plurality of heat storage balls 302 are stacked in the chamber body 301. The heating element 303 is installed on the inner side wall of the chamber body 301. The power supply element 304 is arranged on the outside of the ignition and heat preservation furnace 2 and is connected to the heating element 303 through a heating cable 305.

[0059] In the present invention, the device also includes a self-suction device 4 provided on the ignition and heat preservation furnace 2. The self-suction device 4 includes a load-bearing frame 401, a suction shaft 402, suction blades 403, and a suction motor 404. The load-bearing frame 401 is installed on the upper part of the furnace top of the ignition and heat preservation furnace 2. The suction shaft 402 is provided at a central position within the load-bearing frame 401. The suction blades 403 are installed on the suction shaft 402. The suction motor 404 is provided at the top of the load-bearing frame 401 and is connected to the upper end of the suction shaft 402. The heat storage chamber device 3 is located on the air outlet side of the self-suction device 4.

[0060] In the present invention, a heat storage chamber height adjustment device 5 is provided on both sides of the ignition and heat preservation furnace 2. The heat storage chamber height adjustment device 5 includes an adjustment chamber 501, an adjustment support plate 502, an adjuster 503, an adjustment rod 504, and an adjustment heat storage ball 505. The adjustment chamber 501 is installed on the furnace side of the ignition and heat preservation furnace 2 and is connected to the chamber body 301 of the heat storage chamber device 3. The adjustment support plate 502 is arranged at the lower part of the adjustment chamber 501. The adjuster 503 is arranged at the bottom outside the adjustment chamber 501. The adjustment rod 504 passes through the adjuster 503 and is connected to the adjustment support plate 502. A plurality of adjustment heat storage balls 505 are loaded in the adjustment chamber 501, and the plurality of adjustment heat storage balls 505 are located on the adjustment support plate 502.

[0061] In the present invention, multiple regenerator devices 3 are sequentially arranged on the top of the ignition and holding furnace 2 along the running direction of the sintering trolley 1. Regenerator height adjustment devices 5 are provided on both sides of each regenerator device 3.

[0062] Preferably, along the running direction of the sintering trolley 1 , the stacking height of the heat storage balls 302 in the upstream heat storage chamber device 3 is greater than or equal to the stacking height of the heat storage balls 302 in the downstream heat storage chamber device 3 .

[0063] In the present invention, a plurality of suction blades 403 are connected to the suction shaft 402. The plurality of suction blades 403 are evenly distributed along the circumferential direction of the suction shaft 402.

[0064] In the present invention, a plurality of self-suction devices 4 are provided on the top of the ignition and holding furnace 2. The plurality of self-suction devices 4 are evenly distributed along the running direction and width direction of the sintering trolley 1.

[0065] In the present invention, the device further includes a sintering mixture distributor 6 and a biomass solid fuel distributor 7 arranged above the sintering trolley 1. Along the running direction of the sintering trolley 1, the sintering mixture distributor 6 and the biomass solid fuel distributor 7 are arranged upstream of the ignition and holding furnace 2, and the sintering mixture distributor 6 is located upstream of the biomass solid fuel distributor 7.

[0066] Preferably, the sintered mixture distributor 6 and the biomass solid fuel distributor 7 are both nine-roller distributors.

[0067] In the present invention, a pure oxygen injection device 8 is provided on the side of the ignition and holding furnace 2. The pure oxygen injection device 8 comprises a pure oxygen pipeline 801 and a pure oxygen nozzle 802. The pure oxygen pipeline 801 is provided outside the ignition and holding furnace 2. One end of the pure oxygen nozzle 802 is connected to the pure oxygen pipeline 801, and the other end extends through the side wall of the ignition and holding furnace 2 into the ignition and holding furnace 2.

[0068] Preferably, a plurality of pure oxygen blowing devices 8 are respectively provided on both sides of the ignition and holding furnace 2. The plurality of pure oxygen blowing devices 8 are evenly distributed along the running direction of the sintering trolley 1. Example 1

[0069] like Figure 3 and Figure 9 As shown, a furnace top adjustable heat storage chamber blast-type iron ore sintering zero-carbon ignition and heat preservation device includes a sintering trolley 1, an ignition and heat preservation furnace 2, and a heat storage chamber device 3. The ignition and heat preservation furnace 2 is arranged above the sintering trolley 1. The heat storage chamber device 3 includes a chamber body 301, heat storage balls 302, heating elements 303, power supply elements 304, and heating cables 305. Among them, the chamber body 301 is installed on the furnace top of the ignition and heat preservation furnace 2. A plurality of heat storage balls 302 are stacked in the chamber body 301. The heating element 303 is installed on the inner wall of the chamber body 301. The power supply element 304 is arranged on the outside of the ignition and heat preservation furnace 2 and is connected to the heating element 303 through a heating cable 305. Example 2

[0070] like Figure 8As shown, Example 1 is repeated, except that the device also includes a self-suction device 4 arranged on the ignition and heat preservation furnace 2. The self-suction device 4 includes a load-bearing frame 401, a suction shaft 402, a suction blade 403, and a suction motor 404. Among them, the load-bearing frame 401 is installed on the upper part of the furnace top of the ignition and heat preservation furnace 2. The suction shaft 402 is set in the central position inside the load-bearing frame 401. The suction blade 403 is installed on the suction shaft 402. The suction motor 404 is set at the top of the load-bearing frame 401 and is connected to the upper end of the suction shaft 402. The heat storage chamber device 3 is located on the air outlet side of the self-suction device 4. Example 3

[0071] like Figure 5 and Figure 10 As shown, Example 2 is repeated, except that a heat storage chamber height adjustment device 5 is further provided on both sides of the ignition and heat preservation furnace 2. The heat storage chamber height adjustment device 5 includes an adjustment chamber 501, an adjustment support plate 502, a regulator 503, an adjustment rod 504, and an adjustment heat storage ball 505. Among them, the adjustment chamber 501 is installed on the furnace side of the ignition and heat preservation furnace 2 and is connected to the chamber body 301 of the heat storage chamber device 3. The adjustment support plate 502 is arranged at the lower part of the adjustment chamber 501. The regulator 503 is arranged at the bottom outside the adjustment chamber 501. The adjustment rod 504 passes through the regulator 503 and is connected to the adjustment support plate 502. A plurality of adjustment heat storage balls 505 are loaded in the adjustment chamber 501, and the plurality of adjustment heat storage balls 505 are located on the adjustment support plate 502. Example 4

[0072] like Figure 4 As shown, Example 3 is repeated, except that four regenerator devices 3 are sequentially arranged on the top of the ignition and holding furnace 2 along the running direction of the sintering trolley 1. Regenerator height adjustment devices 5 are provided on both sides of each regenerator device 3. Example 5

[0073] Example 4 is repeated, except that along the running direction of the sintering trolley 1, the stacking height of the heat storage balls 302 in the upstream heat storage chamber device 3 is greater than the stacking height of the heat storage balls 302 in the downstream heat storage chamber device 3. Example 6

[0074] Example 4 is repeated, except that along the running direction of the sintering trolley 1, the stacking height of the heat storage balls 302 in the upstream heat storage chamber device 3 is equal to the stacking height of the heat storage balls 302 in the downstream heat storage chamber device 3. Example 7

[0075] Example 4 is repeated, except that along the running direction of the sintering trolley 1, the stacking height of the heat storage balls 302 in the first heat storage chamber device 3 is greater than the stacking height of the heat storage balls 302 in the second heat storage chamber device 3, the stacking height of the heat storage balls 302 in the second heat storage chamber device 3 is greater than the stacking height of the heat storage balls 302 in the third heat storage chamber device 3, and the stacking height of the heat storage balls 302 in the third heat storage chamber device 3 is equal to the stacking height of the heat storage balls 302 in the fourth heat storage chamber device 3. Example 8

[0076] Repeat Example 7, except that a plurality of suction blades 403 are connected to the suction shaft 402. The plurality of suction blades 403 are evenly distributed along the circumference of the suction shaft 402. Example 9

[0077] Example 8 was repeated, except that the top of the ignition and holding furnace 2 was equipped with multiple self-suction devices 4. The multiple self-suction devices 4 were evenly distributed along the running direction and width of the sintering trolley 1. The multiple self-suction devices 4 were evenly arranged in four rows along the running direction of the sintering trolley 1 and four rows along the width of the sintering trolley 1. Example 10

[0078] Example 9 is repeated, except that the device further includes a sintering mixture distributor 6 and a biomass solid fuel distributor 7 arranged above the sintering trolley 1. Along the running direction of the sintering trolley 1, the sintering mixture distributor 6 and the biomass solid fuel distributor 7 are arranged upstream of the ignition and holding furnace 2, and the sintering mixture distributor 6 is located upstream of the biomass solid fuel distributor 7. Example 11

[0079] Example 10 was repeated, except that the sintered mixture distributor 6 and the biomass solid fuel distributor 7 were both nine-roller distributors. Example 12

[0080] like Figure 6 As shown, Example 11 is repeated, except that a pure oxygen injection device 8 is also provided on the side of the ignition and holding furnace 2. The pure oxygen injection device 8 includes a pure oxygen pipeline 801 and a pure oxygen nozzle 802. The pure oxygen pipeline 801 is provided outside the ignition and holding furnace 2. One end of the pure oxygen nozzle 802 is connected to the pure oxygen pipeline 801, and the other end extends through the side wall of the ignition and holding furnace 2 into the ignition and holding furnace 2. Example 13

[0081] Example 12 is repeated, except that a plurality of pure oxygen blowing devices 8 are respectively provided on both sides of the ignition and holding furnace 2. The plurality of pure oxygen blowing devices 8 are evenly distributed along the running direction of the sintering trolley 1.

[0082] In this embodiment, the working principle of the furnace top adjustable regenerator blast-type iron ore sintering zero-carbon ignition and heat preservation device is as follows: first, the sintering mixture is evenly distributed on the sintering trolley 1 using the sintering mixture distributor 6. After the distribution is completed, the solid fuel made of biomass is sprayed on the surface of the sintering mixture through the biomass solid fuel distributor 7, so that the surface of the sintering mixture is covered with a layer of biomass solid fuel, thereby significantly reducing the ignition temperature of the surface. Then, the regenerator device 3 is used to perform electric ignition sintering on the sintering surface. During the process of igniting and sintering the sintering surface, pure oxygen is simultaneously blown into the furnace of the ignition and heat preservation furnace 2 using the pure oxygen blowing device 8. The pure oxygen is mixed with the air in the furnace to form an oxygen-rich atmosphere, thereby further reducing the temperature of the sintering surface to be ignited to form a combustion zone.

[0083] While the regenerator device 3 provides a high-temperature atmosphere for the sintering material surface for electric thermal ignition, the self-suction device 4 also rotates the suction shaft 402 and the suction blades 403 disposed thereon via the suction motor 404, thereby drawing air from outside the ignition and holding furnace 2 into the furnace. Since the regenerator device 3 is located on the outlet side of the self-suction device 4, the air is simultaneously heated by the regenerator device 3 as it is drawn into the furnace, ultimately achieving the purpose of air entering the furnace for ignition. That is, hot air ignition is introduced on top of the electric thermal ignition of the sintering material surface by the regenerator device 3, further enhancing the ignition uniformity of the sintering material surface.

[0084] Furthermore, heat storage chamber height adjustment devices 5 are provided on both sides of the heat storage chamber device 3. Adjustment heat storage balls 505 within the heat storage chamber height adjustment devices 5 are supported by adjustment plates 502, and the vertical height of the adjustment plates 502 can be freely raised and lowered by an adjuster 503 via an adjustment rod 504. The regulating chamber 501 of the heat storage chamber height regulating device 5 is connected to the chamber body 301 of the heat storage chamber device 3. Therefore, when the material level of the regulating heat storage ball 505 in the heat storage chamber height regulating device 5 is higher than the material level of the heat storage ball 302 in the furnace top heat storage chamber device 3, the regulating heat storage ball 505 in the heat storage chamber height regulating device 5 will roll toward the furnace top, thereby increasing the material level of the furnace top heat storage ball 302, thereby enhancing the heat storage capacity of the furnace top heat storage chamber device 3; conversely, when the material level of the regulating heat storage ball 505 in the heat storage chamber height regulating device 5 is lower than the material level of the heat storage ball 302 in the furnace top heat storage chamber device 3, the heat storage ball 302 in the furnace top heat storage chamber device 3 will roll toward the heat storage chamber height regulating devices 5 on both sides, thereby reducing the material level of the furnace top heat storage ball 302, thereby weakening the heat storage capacity of the furnace top heat storage chamber device 3. Figure 5-7 As shown, the regenerator height adjustment device 5 can flexibly adjust the material surface height of the regulating regenerator balls 505 in the device according to the on-site working conditions, thereby achieving adaptive adjustment of the heat storage capacity of the furnace top regenerator device 3 and enhancing the ignition and sintering effect.

Claims

1. A furnace top adjustable regenerator blast-type iron ore sintering zero-carbon ignition and heat preservation device, characterized by: The device comprises a sintering trolley (1), an ignition and heat-keeping furnace (2), and a heat storage chamber device (3); the ignition and heat-keeping furnace (2) is arranged above the sintering trolley (1); the heat storage chamber device (3) comprises a chamber body (301), heat storage balls (302), a heating element (303), a power supply element (304), and a heating cable (305); wherein the chamber body (301) is installed on the furnace top of the ignition and heat-keeping furnace (2); a plurality of heat storage balls (302) are stacked in the chamber body (301); the heating element (303) is installed on the inner side wall of the chamber body (301); and the power supply element (304) is arranged on the outer side of the ignition and heat-keeping furnace (2) and is connected to the heating element (303) via the heating cable (305).

2. The device according to claim 1, characterized in that: The device further comprises a self-suction device (4) arranged on the ignition and heat preservation furnace (2); the self-suction device (4) comprises a bearing frame (401), a suction shaft (402), a suction blade (403), and a suction motor (404); wherein the bearing frame (401) is mounted on the top of the ignition and heat preservation furnace (2); the suction shaft (402) is arranged at a central position within the bearing frame (401); the suction blade (403) is mounted on the suction shaft (402); the suction motor (404) is arranged on the top of the bearing frame (401) and connected to the upper end of the suction shaft (402); and the heat storage chamber device (3) is located on the air outlet side of the self-suction device (4).

3. The device according to claim 1 or 2, characterized in that: A heat storage chamber height adjustment device (5) is provided on both sides of the ignition and heat preservation furnace (2); the heat storage chamber height adjustment device (5) comprises an adjustment chamber (501), an adjustment support plate (502), a regulator (503), an adjustment rod (504), and an adjustment heat storage ball (505); wherein the adjustment chamber (501) is installed on the furnace side of the ignition and heat preservation furnace (2) and is connected to the chamber body (301) of the heat storage chamber device (3); the adjustment support plate (502) is arranged at the lower part of the adjustment chamber (501); the regulator (503) is arranged at the bottom outside the adjustment chamber (501); the adjustment rod (504) passes through the regulator (503) and is connected to the adjustment support plate (502); a plurality of adjustment heat storage balls (505) are loaded in the adjustment chamber (501), and the plurality of adjustment heat storage balls (505) are located on the adjustment support plate (502).

4. The device according to claim 3, characterized in that: Along the running direction of the sintering trolley (1), a plurality of heat storage chamber devices (3) are sequentially arranged on the furnace top of the ignition and heat preservation furnace (2); and each heat storage chamber device (3) is equipped with a heat storage chamber height adjustment device (5) on both sides.

5. The device according to claim 4, characterized in that: Along the running direction of the sintering trolley (1), the stacking height of the heat storage balls (302) in the upstream heat storage chamber device (3) is greater than or equal to the stacking height of the heat storage balls (302) in the downstream heat storage chamber device (3).

6. The device according to claim 2, characterized in that: A plurality of suction blades (403) are connected to the suction shaft (402); the plurality of suction blades (403) are evenly distributed along the circumferential direction of the suction shaft (402); and / or The top of the ignition and heat-insulating furnace (2) is provided with a plurality of self-suction devices (4); the plurality of self-suction devices (4) are evenly distributed along the running direction and width direction of the sintering trolley (1).

7. The device according to any one of claims 1-2 and 4-6, characterized in that: The device further comprises a sintering mixture distributor (6) and a biomass solid fuel distributor (7) arranged above the sintering trolley (1); along the running direction of the sintering trolley (1), the sintering mixture distributor (6) and the biomass solid fuel distributor (7) are arranged upstream of the ignition and holding furnace (2), and the sintering mixture distributor (6) is located upstream of the biomass solid fuel distributor (7).

8. The device according to claim 3, characterized in that: The device further comprises a sintering mixture distributor (6) and a biomass solid fuel distributor (7) arranged above the sintering trolley (1); along the running direction of the sintering trolley (1), the sintering mixture distributor (6) and the biomass solid fuel distributor (7) are arranged upstream of the ignition and holding furnace (2), and the sintering mixture distributor (6) is located upstream of the biomass solid fuel distributor (7).

9. The iron ore sintering zero-carbon ignition and heat preservation device according to claim 7, characterized in that: The sintered mixture distributor (6) and the biomass solid fuel distributor (7) are both nine-roller distributors.

10. The iron ore sintering zero-carbon ignition and heat preservation device according to claim 8, characterized in that: The sintered mixture distributor (6) and the biomass solid fuel distributor (7) are both nine-roller distributors.

11. The device according to any one of claims 1-2, 4-6, 8-10, characterized in that: A pure oxygen blowing device (8) is further provided on the side of the ignition and heat-insulating furnace (2); the pure oxygen blowing device (8) comprises a pure oxygen pipeline (801) and a pure oxygen nozzle (802); wherein the pure oxygen pipeline (801) is provided on the outside of the ignition and heat-insulating furnace (2); one end of the pure oxygen nozzle (802) is connected to the pure oxygen pipeline (801), and the other end thereof passes through the side wall of the ignition and heat-insulating furnace (2) and extends into the ignition and heat-insulating furnace (2).

12. The device according to claim 3, characterized in that: A pure oxygen blowing device (8) is further provided on the side of the ignition and heat-insulating furnace (2); the pure oxygen blowing device (8) comprises a pure oxygen pipeline (801) and a pure oxygen nozzle (802); wherein the pure oxygen pipeline (801) is provided on the outside of the ignition and heat-insulating furnace (2); one end of the pure oxygen nozzle (802) is connected to the pure oxygen pipeline (801), and the other end thereof passes through the side wall of the ignition and heat-insulating furnace (2) and extends into the ignition and heat-insulating furnace (2).

13. The device according to claim 7, characterized in that: A pure oxygen blowing device (8) is further provided on the side of the ignition and heat-insulating furnace (2); the pure oxygen blowing device (8) comprises a pure oxygen pipeline (801) and a pure oxygen nozzle (802); wherein the pure oxygen pipeline (801) is provided on the outside of the ignition and heat-insulating furnace (2); one end of the pure oxygen nozzle (802) is connected to the pure oxygen pipeline (801), and the other end thereof passes through the side wall of the ignition and heat-insulating furnace (2) and extends into the ignition and heat-insulating furnace (2).

14. The device according to claim 11, characterized in that: A plurality of pure oxygen blowing devices (8) are respectively provided on both sides of the ignition and holding furnace (2); the plurality of pure oxygen blowing devices (8) are evenly distributed along the running direction of the sintering trolley (1).

15. The device according to claim 12 or 13, characterized in that: A plurality of pure oxygen blowing devices (8) are respectively provided on both sides of the ignition and holding furnace (2); the plurality of pure oxygen blowing devices (8) are evenly distributed along the running direction of the sintering trolley (1).

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