Dust removal and heat storage cyclone, dust removal and heat storage device and method for stabilizing temperature of hot air

Abstract

The invention provides a dust removal and heat storage cyclone, a dust removal and heat storage device and a method for stabilizing the temperature of hot air, and relates to the technical field of air treatment equipment.The dust removal and heat storage cyclone comprises a heat storage outer pipe, a heat storage core pipe, a guider and a heat storage module, and a dust falling opening is formed in the lower end of the heat storage outer pipe; the upper end of the heat storage core pipe is arranged outside the heat storage outer pipe to form an air outlet, the lower end of the heat storage core pipe is inserted into the heat storage outer pipe, and an annular gap between the heat storage core pipe and the heat storage outer pipe forms an air inlet; the guider is arranged in the air inlet and used for guiding heat removal air to form a spiral streamline and enter the heat storage outer pipe. The heat storage module comprises a heat storage body arranged in the heat storage core tube and a bearing structure used for fixing the heat storage body in the heat storage core tube. While efficient dust removal of the hot air is completed, temperature fluctuation of the hot air is effectively stabilized, and uniformity and stability of the temperature of the hot air during output are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of air handling equipment technology, and in particular to a dust removal and heat storage cyclone separator, device, and method for stabilizing the temperature of heat-extracting air. Background Technology

[0002] Steel slag, a major byproduct of steel production, has an annual output exceeding 100 million tons. Currently, mature treatment processes meeting ultra-low emission requirements mainly include pool-type hot quenching, pressurized hot quenching, drum-type hot quenching, and air quenching. Among these, pool-type and pressurized hot quenching have a long history of development and mature technology, and are widely used in converter steel slag treatment. The process principle of pool-type and pressurized hot quenching involves pouring high-temperature steel slag into a special container, cooling it with water spray, and controlling the ambient pressure to stabilize the free calcium oxide in the slag. After multiple generations of technological iteration, the existing systems have achieved a high level of automation and equipment, are highly adaptable to the fluidity and alkalinity of steel slag, are easy to operate, and run stably, making them one of the most economically efficient mainstream processes. The drum-type hot quenching uses high-speed rotating equipment to impact and crush molten steel slag, and utilizes air or atomized water for rapid cooling. It has advantages such as high processing efficiency, a clean working environment, and low infrastructure and maintenance costs. Steel slag treated by the drum-type hot quenching method has uniform particle size and good stability, and can be directly used in building materials and other fields. However, the drum process carries the risk of explosion due to the intense contact between water and high-temperature molten slag, and it requires high fluidity of the feed slag, limiting its application in certain conditions. Air quenching is a dry granulation technology that uses high-pressure airflow to impact and granulate molten steel slag and rapidly cool it, while recovering some sensible heat, offering advantages in water and energy conservation. Air-quenched steel slag particles have high hardness and low f-CaO content, but significant internal residual stress, potentially leading to phase transformation problems later on. Furthermore, air quenching is noisy and only suitable for liquid slag with good fluidity; it typically needs to be used in conjunction with other processes to handle steel slag of different morphologies.

[0003] Since steel slag can reach temperatures of up to 1550℃ at the furnace, it contains a large amount of high-quality waste heat, equivalent to the calorific value of approximately 50 kg of standard coal per ton of electric arc furnace slag. However, existing mainstream processes such as pool-type hot quenching, pressurized hot quenching, and drum methods are unable to effectively recover this heat, resulting in energy waste. Against this backdrop, developing a new generation of steel slag treatment technology and equipment that combines efficient processing with waste heat utilization has become an inevitable direction for the industry. The heat extraction air from steel slag contains dust and is characterized by large flow fluctuations and drastic temperature changes. When it enters the subsequent dust removal and waste heat utilization system, it is prone to thermal shock, affecting operational stability. Therefore, how to effectively suppress temperature fluctuations while efficiently removing dust from the heat extraction air to ensure the uniformity and stability of the output temperature has become a pressing technical problem to be solved. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a dust removal and heat storage cyclone, a device and a method for stabilizing the temperature of the heat extraction air, so as to effectively suppress the temperature fluctuation of the heat extraction air while completing the efficient dust removal of the heat extraction air, so as to ensure the uniformity and stability of the output temperature of the heat extraction air.

[0005] The above-mentioned objective of this invention can be achieved by the following technical solution: This invention provides a dust removal and heat storage cyclone, comprising: The heat storage outer tube has a lower end that forms an ash discharge port. A heat storage core tube, the upper end of which is disposed outside the heat storage outer tube to form an air outlet, and the lower end of which is inserted into the heat storage outer tube, with an annular gap between the heat storage core tube and the heat storage outer tube forming an air inlet. A guide, which is disposed in the air inlet, is used to guide the heat-collecting air to form a spiral streamline and enter the heat storage outer tube; A heat storage module, comprising a heat storage body disposed within the heat storage core tube, and a support structure for fixing the heat storage body within the heat storage core tube.

[0006] In a preferred embodiment of the present invention, the dust removal and heat storage cyclone includes at least two heat storage core tubes and at least one core tube connecting device for connecting adjacent heat storage core tubes.

[0007] In a preferred embodiment of the present invention, the heat storage body is a ceramic heat storage body, and the ceramic heat storage body is arranged in a honeycomb pattern.

[0008] In a preferred embodiment of the present invention, the supporting structure includes a core tube end disposed at the lower end of the heat storage core tube, and the core tube end is provided with a honeycomb-shaped hollow structure.

[0009] In a preferred embodiment of the present invention, the core tube end is integrally formed with the heat storage core tube.

[0010] In a preferred embodiment of the present invention, the heat storage outer tube includes a cylindrical section and a conical section arranged from top to bottom, and the heat storage core tube is inserted into the cylindrical section.

[0011] In a preferred embodiment of the invention, the guide includes helical blades; or, the guide includes a plurality of spaced-apart guide blades.

[0012] In a preferred embodiment of the present invention, the dust removal and heat storage cyclone further includes a support structure disposed at the bottom of the heat storage outer tube.

[0013] The present invention also provides a dust removal and heat storage device, comprising at least one of the aforementioned dust removal and heat storage cyclones.

[0014] In a preferred embodiment of the present invention, the dust removal and heat storage device includes a shell and a partition structure disposed within the shell. The shell is provided with a heat-extracting air inlet and a heat-extracting air outlet. The partition structure divides the internal space of the shell into an exhaust chamber, an air inlet chamber, and an ash discharge chamber distributed from top to bottom. The heat-extracting air outlet is connected to the exhaust chamber, and the heat-extracting air inlet is connected to the air inlet chamber. Multiple dust removal and heat storage cyclones are provided, and the multiple dust removal and heat storage cyclones are arranged at intervals. The support structure of the dust removal and heat storage cyclones is connected to the shell. The air inlet of the dust removal and heat storage cyclones is connected to the air inlet chamber, the air outlet of the dust removal and heat storage cyclones is connected to the exhaust chamber, and the ash discharge port of the dust removal and heat storage cyclones is connected to the ash discharge chamber.

[0015] In a preferred embodiment of the present invention, the heat extraction air inlet and the heat extraction air outlet are arranged opposite each other on both sides of the outer casing in a horizontal direction, and a plurality of dust removal and heat storage cyclones are arranged at intervals along the direction from the heat extraction air inlet to the heat extraction air outlet.

[0016] In a preferred embodiment of the present invention, the partition structure includes an upper partition and a lower partition disposed within the outer casing. The upper partition and the lower partition are spaced apart to divide the inner cavity of the outer casing into the exhaust chamber, the air inlet chamber and the ash discharge chamber. Along the direction from the heat extraction air inlet to the heat extraction air outlet, the upper partition is inclined downward so that the cross-section of the air inlet chamber gradually decreases.

[0017] In a preferred embodiment of the present invention, the dust removal and heat storage cyclone further includes a screw conveyor, which is connected to the bottom of the ash discharge chamber.

[0018] The present invention also provides a method for stabilizing the temperature of heat-extracting air, which is implemented using the aforementioned dust removal and heat storage device. The method for stabilizing the temperature of heat-extracting air includes the following steps: The dust removal and heat storage cyclone is installed into the dust removal and heat storage device through a support structure; The steel slag heat-extracting air is input into the dust removal and heat storage device. The steel slag heat-extracting air passes through the guide of the dust removal and heat storage cyclone to form a spiral streamline and enters the heat storage outer tube. The heat-extracting air achieves the separation of dust and airflow through spiral motion. The dust is discharged from the bottom of the heat storage outer tube by gravity, and the purified heat-extracting air enters the heat storage core tube. The purified heat-extracting air exchanges heat with the heat storage medium inside the heat storage core tube when it passes through the heat storage core tube, and then exits the heat storage core tube. When the temperature of the purified heat-extracting air is greater than the temperature of the heat storage body, the heat storage body absorbs heat and rises in temperature, while the purified heat-extracting air cools down and is output. When the temperature of the purified heat-extracting air is lower than the temperature of the heat storage body, the heat storage body releases heat and cools down, while the purified heat-extracting air is heated up and output.

[0019] The technical solution of the present invention has the following significant beneficial effects: The dust-removing and heat-storing cyclone generator of this invention organically combines efficient dust removal with dynamic heat storage and temperature regulation, achieving synergistic treatment of heat-extracting air from steel slag with fluctuating temperatures. Dust-laden heat-extracting air enters the annular space between the outer heat storage tube and the core heat storage tube through the inlet, forming a stable spiral streamline under the guidance of the guide. Under centrifugal force, dust particles are efficiently separated, and the purified air rises along the center of the core heat storage tube and is discharged from the outlet, completing the dust removal process. Simultaneously, the heat storage element, located within the core heat storage tube, serves as the core heat exchange unit, dynamically responding to changes in the heat-extracting air temperature, absorbing and releasing heat to effectively mitigate temperature fluctuations. During operation, when the temperature of the purified heat-extracting air is higher than the temperature of the heat storage element itself, heat is transferred from the air to the heat storage element, causing it to absorb heat and heat up, while the air is cooled and output. Conversely, when the temperature of the purified air is lower than the temperature of the heat storage element, the heat storage element releases heat to the air, causing it to gain heat and heat up before output. This bidirectional thermal regulation mechanism endows the dust removal and heat storage cyclone with excellent thermal buffering capacity. Under conditions of frequent fluctuations in inlet heat-extracting air temperature, it significantly improves the stability and uniformity of outlet heat-extracting air temperature, preventing safety hazards caused by thermal shock to downstream waste heat recovery equipment. This invention not only achieves integrated high-efficiency purification and waste heat recovery of high-temperature dust-laden flue gas, but also realizes intelligent temperature regulation through the dynamic heat storage and release characteristics of the heat storage body, which is beneficial to improving the thermal efficiency and operational reliability of subsequent waste heat recovery systems. This invention is particularly suitable for heat-extracting air treatment scenarios with severe temperature fluctuations and complex operating conditions during molten steel slag processing. It provides key technical equipment support for constructing a continuous, stable, energy-efficient, and comprehensive waste heat utilization system for steel slag, demonstrating outstanding practicality and broad application prospects. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, guided by the teachings of this invention, can select various possible shapes and proportions to implement the invention according to specific circumstances.

[0022] Figure 1 This is a side cross-sectional view of one embodiment of the dust removal and heat storage cyclone of the present invention; Figure 2 This is a schematic front view of one embodiment of the support structure described in this invention; Figure 3 This is a side cross-sectional view of one embodiment of the dust removal and heat storage device of the present invention; The reference numerals in the above figures are as follows: 10. Dust-removing and heat-storing cyclone separator; 100. Heat storage outer tube; 110. Cylindrical section; 120. Conical section; 130. Support structure; 200. Heat storage core tube; 300. Guide; 400. Heat storage module; 410. Heat storage body; 420. Supporting structure; 500. Core tube connection device; 20. Dust removal and heat storage device; 600, outer casing; 610, hot air inlet; 620, hot air outlet; 630, exhaust chamber; 640, air inlet chamber; 650, ash discharge chamber; 700. Divider structure; 710. Upper partition; 720. Lower partition; 800. Screw conveyor. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Implementation Method 1

[0025] Please refer to the following: Figure 1 , Figure 2 and Figure 3As shown, an embodiment of the present invention provides a dust removal and heat storage cyclone 10, which includes a heat storage outer tube 100, a heat storage core tube 200, a guide 300, and a heat storage module 400. The lower end of the heat storage outer tube 100 forms a dust collection port; the upper end of the heat storage core tube 200 is disposed outside the heat storage outer tube 100 to form an air outlet, and the lower end of the heat storage core tube 200 is inserted into the heat storage outer tube 100. The annular gap between the heat storage core tube 200 and the heat storage outer tube 100 forms an air inlet; the guide 300 is disposed in the air inlet and is used to guide the heat-collecting air to form a spiral streamline and enter the heat storage outer tube 100; the heat storage module 400 includes a heat storage body 410 disposed inside the heat storage core tube 200 and a support structure 420 for fixing the heat storage body 410 in the heat storage core tube 200.

[0026] Overall, this dust-removing and heat-storing cyclone 10 organically combines efficient dust removal with dynamic heat storage and temperature regulation, achieving synergistic treatment of heat-extracting air from steel slag with fluctuating temperatures. Dust-laden heat-extracting air enters the annular space between the outer heat-storing tube 100 and the core heat-storing tube 200 through the inlet, and forms a stable spiral streamline under the guidance of the guide 300. Under centrifugal force, dust particles are efficiently separated, and the purified heat-extracting air rises along the center of the core heat-storing tube 200 and is discharged from the outlet, completing the dust removal process. Simultaneously, the heat storage element 410, located within the core heat-storing tube 200, serves as the core heat exchange unit, dynamically responding to changes in the heat-extracting air temperature, absorbing and releasing heat, thereby effectively mitigating temperature fluctuations in the heat-extracting air.

[0027] During operation, when the temperature of the purified heat-extracting air is higher than the temperature of the heat storage body 410, heat is transferred from the heat-extracting air to the heat storage body 410, causing the heat storage body 410 to absorb heat and rise in temperature, while the heat-extracting air is cooled down and output. Conversely, when the temperature of the purified heat-extracting air is lower than the temperature of the heat storage body 410, the heat storage body 410 releases heat to the heat-extracting air, causing the heat-extracting air to gain heat and rise in temperature before being output. This bidirectional thermal regulation mechanism enables the dust removal and heat storage cyclone 10 to have good thermal buffering capacity, significantly improving the stability and uniformity of the outlet heat-extracting air temperature under conditions of frequent fluctuations in the inlet heat-extracting air temperature, and avoiding the impact of thermal shock on downstream waste heat utilization equipment.

[0028] This invention not only achieves efficient purification and waste heat recovery of high-temperature dusty flue gas, but also realizes intelligent temperature regulation through the dynamic heat storage and release characteristics of the heat storage body 410, which is conducive to improving the thermal efficiency and operational reliability of the subsequent waste heat recovery system.

[0029] This invention is particularly suitable for heat extraction air treatment scenarios with drastic temperature fluctuations and complex operating conditions during the treatment of molten steel slag. It provides key technical equipment support for building a continuous, stable, energy-efficient and high-performance comprehensive utilization system for steel slag waste heat, and has outstanding practicality and broad application prospects.

[0030] The application scope of the dust removal and heat storage cyclone 10 includes, but is not limited to, the extraction of heat from steel slag air and the recovery of waste heat from other dusty flue gas with fluctuating temperatures. The present invention technology can be used to achieve dust removal while ensuring the stability of flue gas output temperature.

[0031] In embodiments of the present invention, such as Figure 1 The embodiment shown includes at least two heat storage core tubes 200 and at least one core tube connecting device 500 for connecting adjacent heat storage core tubes 200.

[0032] By setting multiple heat storage core tubes 200 and corresponding core tube connecting devices 500, the heat storage core tubes 200 are arranged continuously along the axial direction, which not only increases the total volume and heat capacity of the heat storage body 410, but also extends the residence time of the heat-extracting air in the dust removal heat storage cyclone 10, thereby significantly enhancing the dynamic adjustment capability and thermal stability of fluctuating heat-extracting air temperature.

[0033] Designers can adjust the specific structure of the core tube connection device 500 according to the needs of use. For example, the core tube connection device 500 can be a pipe clamp or a flange, etc., without specific restrictions.

[0034] In embodiments of the present invention, designers may adjust the specific material and arrangement of the heat storage body 410 according to usage needs, and no specific limitations are imposed here. Preferably, the heat storage body 410 is a ceramic heat storage body 410, and the ceramic heat storage body 410 is arranged in a honeycomb pattern. The heat storage body 410 may be configured as one or more, and no specific limitations are imposed here.

[0035] By using a honeycomb-shaped ceramic heat storage body 410, it not only has a high specific surface area and excellent heat exchange efficiency, but also effectively increases the number of airflow channels and reduces flow resistance. At the same time, the ceramic material has excellent high temperature resistance, thermal shock resistance and wear resistance.

[0036] The heat storage core tube 200 can be made of wear-resistant ceramic material. The heat storage outer tube 100 can be made of a material with high specific heat, high temperature resistance, and wear resistance, preferably a ceramic heat storage material.

[0037] In embodiments of the present invention, such as Figure 2 In the embodiment shown, the supporting structure 420 includes a core tube end disposed at the lower end of the heat storage core tube 200, and the core tube end is provided with a honeycomb-shaped hollow structure.

[0038] By setting the end of the core tube with a honeycomb-shaped hollow structure, it can not only effectively support and fix the honeycomb ceramic heat storage body 410 to prevent it from falling off or shifting, but also match the honeycomb-shaped hollow structure with the heat storage body 410 to ensure uniform distribution and smooth flow of air.

[0039] Preferred, such as Figure 1 In the illustrated embodiment, the core tube end is integrally formed with the heat storage core tube 200. By integrally forming the core tube end with the heat storage core tube 200, the overall strength of the structure is enhanced, avoiding the risk of failure due to loose connections or thermal fatigue.

[0040] In embodiments of the present invention, such as Figure 1 In the embodiment shown, the heat storage outer tube 100 includes a cylindrical section 110 and a conical section 120 arranged from top to bottom, and the heat storage core tube 200 is inserted into the cylindrical section 110.

[0041] The cylindrical section 110 can cooperate with the heat storage core tube 200 to form a uniform annular gap, which facilitates the installation of the guide 300. Furthermore, the conical section 120 promotes dust settling and improves dust removal efficiency.

[0042] In embodiments of the present invention, designers may adjust the specific structure of the guide 300 according to usage requirements, and no specific limitations are imposed here. In one feasible embodiment, the guide 300 includes helical blades. In another feasible embodiment, the guide 300 includes a plurality of spaced-apart guide vanes. The helical blades or the plurality of guide vanes can guide the airflow along a helical path into the heat storage outer tube 100, reducing turbulence and local impact, lowering pressure loss, and improving the centrifugal dust removal effect.

[0043] In embodiments of the present invention, such as Figure 1 In the embodiment shown, the dust removal and heat storage cyclone 10 also includes a support structure 130 disposed at the bottom of the heat storage outer tube 100.

[0044] Specifically, the support structure 130 is detachably connected to the outer wall of the outlet end of the heat storage outer tube 100. The support structure 130 can be used to fix the dust removal and heat storage cyclone 10 and the dust removal and heat storage device 20.

[0045] Designers may adjust the specific construction of the support structure 130 according to usage requirements, and no specific restrictions are imposed here. For example, the support structure 130 may be a support base, a support plate, or a support frame, etc.

[0046] Implementation Method 2

[0047] Please refer to the following: Figure 3As shown, an embodiment of the present invention provides a dust removal and heat storage device 20, which includes at least one dust removal and heat storage cyclone 10 as described in Embodiment 1. The structure and function of the dust removal and heat storage cyclone 10 are the same as those described in Embodiment 1, and will not be repeated here.

[0048] Specifically, such as Figure 3 The embodiment shown includes a dust removal and heat storage device 20, which includes a housing 600 and a partition structure 700 disposed within the housing 600. The housing 600 is provided with a heat extraction air inlet 610 and a heat extraction air outlet 620. The partition structure 700 divides the internal space of the housing 600 into an exhaust chamber 630, an air inlet chamber 640 and a dust discharge chamber 650 distributed from top to bottom. The heat extraction air outlet 620 is connected to the exhaust chamber 630, and the heat extraction air inlet 610 is connected to the air inlet chamber 640.

[0049] Furthermore, multiple dust removal and heat storage cyclones 10 are provided, and the multiple dust removal and heat storage cyclones 10 are arranged at intervals. The support structure 130 of the dust removal and heat storage cyclone 10 is connected to the outer shell 600. The air inlet of the dust removal and heat storage cyclone 10 is connected to the air inlet chamber 640. The air outlet of the dust removal and heat storage cyclone 10 is connected to the exhaust chamber 630. The ash discharge port of the dust removal and heat storage cyclone 10 is connected to the ash discharge chamber 650.

[0050] The outer shell 600 and the partition structure 700 cooperate to form an exhaust chamber 630, an air inlet chamber 640 and an ash discharge chamber 650 distributed vertically. Multiple dust removal and heat storage cyclones 10 are arranged and installed at intervals inside the outer shell 600. The support structure 130 of the dust removal and heat storage cyclones 10 directly supports and fixes them to the outer shell 600. This realizes an efficient process in which the heated air enters the exhaust chamber 630 and is discharged after heat exchange and dust removal in the air inlet chamber 640 through the dust removal and heat storage cyclones 10. This achieves a reasonable zoning and compact layout of the airflow path.

[0051] Furthermore, the synergistic effect of multiple dust-collecting and heat-storing cyclones 10 improves dust collection performance and temperature stability, enhancing the device's adaptability to heat-extracting air with large temperature fluctuations and high dust content. Additionally, dust is centrally discharged through the ash discharge port into the ash discharge chamber 650, ensuring long-term stable operation of the device.

[0052] An installation part can be provided inside the outer casing 600. The dust removal and heat storage cyclone 10 is connected to the installation part in the outer casing 600 through the support structure 130, thereby ensuring the installation stability of the dust removal and heat storage cyclone 10.

[0053] In embodiments of the present invention, such as Figure 3In the embodiment shown, the heat extraction air inlet 610 and the heat extraction air outlet 620 are arranged opposite each other on both sides of the housing 600 in the horizontal direction, and a plurality of dust removal and heat storage cyclones 10 are arranged at intervals along the direction from the heat extraction air inlet 610 to the heat extraction air outlet 620.

[0054] By arranging multiple dust removal and heat storage cyclones 10 at intervals along the direction from the heat extraction air inlet 610 to the heat extraction air outlet 620, heat extraction air can be sequentially delivered to each dust removal and heat storage cyclone 10, effectively shortening the overall flow channel length, reducing system pressure loss, and enhancing the distribution efficiency of airflow among each dust removal and heat storage cyclone 10.

[0055] In embodiments of the present invention, such as Figure 3 In the embodiment shown, the partition structure 700 includes an upper partition 710 and a lower partition 720 disposed within the housing 600. The upper partition 710 and the lower partition 720 are spaced apart to divide the inner cavity of the housing 600 into an exhaust chamber 630, an air inlet chamber 640, and an ash discharge chamber 650. Along the direction from the hot air inlet 610 to the hot air outlet 620, the upper partition 710 is inclined downward so that the cross-section of the air inlet chamber 640 gradually decreases.

[0056] The upper partition 710 and the lower partition 720 work together to divide the inner cavity of the outer shell 600 into an upper exhaust chamber 630, a middle air inlet chamber 640, and a lower ash discharge chamber 650. The upper partition 710 is inclined downward along the direction from the heat exchange air inlet 610 to the heat exchange air outlet 620, so that the cross-section of the air inlet chamber 640 gradually decreases, thereby generating a gradual narrowing and guiding effect on the incoming airflow, improving the uniformity of airflow velocity and pressure stability, promoting the smooth distribution of airflow to each dust removal and heat storage cyclone 10, and reducing flow dead zones and turbulence losses.

[0057] In embodiments of the present invention, such as Figure 3 The embodiment shown also includes a screw conveyor 800 in the dust removal and heat storage cyclone 10, which is connected to the bottom of the ash discharge chamber 650.

[0058] The screw conveyor 800 can continuously and tightly discharge the collected dust from the ash discharge chamber 650, effectively preventing dust overflow and secondary dust generation, while improving ash discharge efficiency and system sealing. It is suitable for continuous and stable operation under high temperature and high dust load conditions, enhancing the automation level and environmental friendliness of the device.

[0059] Implementation Method 3

[0060] An embodiment of the present invention provides a method for stabilizing the temperature of heat-extracting air, implemented using the dust removal and heat storage device 20 as described in any one of claims 9 to 13. The method for stabilizing the temperature of heat-extracting air includes the following steps: Step S1: Install the dust removal and heat storage cyclone 10 into the dust removal and heat storage device 20 through the support structure 130; Step S2: The hot air from the steel slag is input into the dust removal and heat storage device 20. The hot air passes through the guide 300 of the dust removal and heat storage cyclone 10 to form a spiral flow and enters the heat storage outer tube 100. The hot air achieves the separation of dust and airflow through the spiral motion. The dust is discharged from the bottom of the heat storage outer tube 100 by gravity. The purified hot air enters the heat storage core tube 200. Step S3: When the purified heat-extracting air passes through the heat storage core tube 200, it exchanges heat with the heat storage body 410 inside the heat storage core tube 200, and then exits the heat storage core tube 200. Step S4: When the temperature of the purified heat-extracting air is greater than the temperature of the heat storage body 410, the heat storage body 410 absorbs heat and rises in temperature, and the purified heat-extracting air cools down and is output. Step S5: When the temperature of the purified heat-extracting air is lower than the temperature of the heat storage body 410, the heat storage body 410 releases heat and cools down, and the purified heat-extracting air is heated up and output.

[0061] Specifically, the dust-collecting and heat-storing cyclone separator 10 is installed in the dust-collecting and heat-storing device 20 via a support structure 130. The heat-collecting air from the steel slag passes through the guide 300, forming a spiral flow line, and then passes through the heat-storing outer tube 100. During this process, the spiral motion of the heat-collecting air separates the dust from the airflow. The dust is discharged from the lower part of the heat-storing outer tube 100 by gravity, and the clean heat-collecting air enters the heat-storing core tube 200 from the lower end. After passing through the heat-storing core tube 200 and the heat storage body 410 installed inside the heat-storing core tube 200, the clean heat-collecting air flows out from the upper outlet of the heat-storing core tube 200.

[0062] If the temperature of the extracted air is high, the heat storage outer tube 100, the heat storage core tube 200 and the heat storage body 410 absorb heat and rise in temperature, while the extracted air cools down and is output; if the temperature of the extracted air is low, the heat storage outer tube 100, the heat storage core tube 200 and the heat storage body 410 release heat and cool down, while the extracted air heats up and is output, thereby achieving the purpose of stabilizing the temperature of the extracted air from the steel slag.

[0063] The dust removal and heat storage device 20 can be used for various purposes, including but not limited to heat extraction from steel slag air and waste heat recovery from other dusty flue gas with fluctuating temperatures. This invention can be used to remove dust while improving the stability of the flue gas output temperature.

[0064] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified element, component, part, or step, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute “may” include is optional. Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The disclosure of “a” or “an” used to describe an element, component, part, or step does not imply exclusion of other elements, components, parts, or steps.

[0065] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A dust-removing and heat-storing cyclone, characterized in that, include: The heat storage outer tube has a lower end that forms an ash discharge port. A heat storage core tube, the upper end of which is disposed outside the heat storage outer tube to form an air outlet, and the lower end of which is inserted into the heat storage outer tube, with an annular gap between the heat storage core tube and the heat storage outer tube forming an air inlet. A guide, which is disposed in the air inlet, is used to guide the heat-collecting air to form a spiral streamline and enter the heat storage outer tube; A heat storage module, comprising a heat storage body disposed within the heat storage core tube, and a support structure for fixing the heat storage body within the heat storage core tube.

2. The dust removal and heat storage cyclone as described in claim 1, characterized in that, The dust removal and heat storage cyclone includes at least two heat storage core tubes and at least one core tube connecting device for connecting adjacent heat storage core tubes.

3. The dust removal and heat storage cyclone as described in claim 1, characterized in that, The heat storage body is a ceramic heat storage body, and the ceramic heat storage body is arranged in a honeycomb pattern.

4. The dust-removing and heat-storing cyclone separator as described in claim 1, characterized in that, The supporting structure includes a core tube end located at the lower end of the heat storage core tube, and the core tube end is provided with a honeycomb-shaped hollow structure.

5. The dust-removing and heat-storing cyclone separator as described in claim 4, characterized in that, The end of the core tube is integrally formed with the heat storage core tube.

6. The dust-removing and heat-storing cyclone separator as described in claim 1, characterized in that, The heat storage outer tube includes a cylindrical section and a conical section arranged from top to bottom, and the heat storage core tube is inserted into the cylindrical section.

7. The dust-removing and heat-storing cyclone separator as described in claim 1, characterized in that, The guide includes helical blades; or, the guide includes a plurality of spaced-apart guide blades.

8. The dust removal and heat storage cyclone as described in claim 1, characterized in that, The dust removal and heat storage cyclone also includes a support structure located at the bottom of the heat storage outer tube.

9. A dust removal and heat storage device, characterized in that, It includes at least one dust-removing and heat-storing cyclone as described in any one of claims 1 to 8.

10. The dust removal and heat storage device as described in claim 9, characterized in that, The dust removal and heat storage device includes a shell and a partition structure disposed within the shell. The shell has a heat-extracting air inlet and a heat-extracting air outlet. The partition structure divides the internal space of the shell into an exhaust chamber, an air inlet chamber, and an ash discharge chamber distributed from top to bottom. The heat-extracting air outlet is connected to the exhaust chamber, and the heat-extracting air inlet is connected to the air inlet chamber. Multiple dust removal and heat storage cyclones are provided, and the multiple dust removal and heat storage cyclones are arranged at intervals. The support structure of the dust removal and heat storage cyclones is connected to the shell. The air inlet of the dust removal and heat storage cyclone is connected to the air inlet chamber, the air outlet of the dust removal and heat storage cyclone is connected to the exhaust chamber, and the ash discharge port of the dust removal and heat storage cyclone is connected to the ash discharge chamber.

11. The dust removal and heat storage device as described in claim 10, characterized in that, The heat extraction air inlet and the heat extraction air outlet are arranged opposite each other on both sides of the outer casing in a horizontal direction, and a plurality of dust removal and heat storage cyclones are arranged at intervals along the direction from the heat extraction air inlet to the heat extraction air outlet.

12. The dust removal and heat storage device as described in claim 10, characterized in that, The partition structure includes an upper partition and a lower partition disposed within the outer casing. The upper partition and the lower partition are spaced apart to divide the inner cavity of the outer casing into the exhaust chamber, the air inlet chamber, and the ash discharge chamber. Along the direction from the heat extraction air inlet to the heat extraction air outlet, the upper partition is inclined downward so that the cross-section of the air inlet chamber gradually decreases.

13. The dust removal and heat storage device as described in claim 10, characterized in that, The dust removal and heat storage cyclone also includes a screw conveyor, which is connected to the bottom of the ash discharge chamber.

14. A method for stabilizing the temperature of heated air, characterized in that, The method for stabilizing the temperature of the heat-extracting air, implemented using the dust removal and heat storage device as described in any one of claims 9 to 13, comprises the following steps: The dust removal and heat storage cyclone is installed into the dust removal and heat storage device through a support structure; The steel slag heat-extracting air is input into the dust removal and heat storage device. The steel slag heat-extracting air passes through the guide of the dust removal and heat storage cyclone to form a spiral streamline and enters the heat storage outer tube. The heat-extracting air achieves the separation of dust and airflow through spiral motion. The dust is discharged from the bottom of the heat storage outer tube by gravity, and the purified heat-extracting air enters the heat storage core tube. The purified heat-extracting air exchanges heat with the heat storage medium inside the heat storage core tube when it passes through the heat storage core tube, and then exits the heat storage core tube. When the temperature of the purified heat-extracting air is greater than the temperature of the heat storage body, the heat storage body absorbs heat and rises in temperature, while the purified heat-extracting air cools down and is output. When the temperature of the purified heat-extracting air is lower than the temperature of the heat storage body, the heat storage body releases heat and cools down, while the purified heat-extracting air is heated up and output.

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