Waste incineration waste heat boiler high temperature molten slag trapping and sensible heat recovery equipment and method

Abstract

The present application relates to waste incineration waste heat recovery field, disclose a waste incineration waste heat boiler high temperature molten slag capture and sensible heat recovery equipment and method, including: incinerator top end is connected in the gas inlet of waste heat boiler, the top of waste heat boiler is fixedly installed with dust agglomeration device and porous medium dust capture device;The porous medium dust capture device is detachably connected on the ash removal device;Waste heat boiler is fixedly provided with ash guide partition wall;The ash guide partition wall side is equipped with flow guide device;The ash guide partition wall is fixedly installed with high temperature melting heater;The ash guide partition wall is fixedly provided with liquid-solid heat exchanger and gas-solid heat exchanger, and the gas-solid heat exchanger is provided with dust filter ceramic filter element, and the lower end is provided with dust conveying dust hole, and the dust hole is connected with ash collecting hopper;The present application solves the problems of energy waste, high process fine powder escape rate in flue gas, equipment damage risk, captured molten slag easy to block capture net, short heat transfer time of heat exchanger, low heat recovery rate in the prior art.

Description

Technical Field

[0001] This invention relates to the field of waste heat recovery from waste incineration, and particularly to equipment and methods for high-temperature molten slag collection and sensible heat recovery from waste incineration waste heat boilers. Background Technology Waste incineration is currently the mainstream technology for the harmless and volume-reduced treatment of municipal solid waste, generating a large amount of fly ash during the incineration process. In this field, the dust collected by bag filters is generally defined as fly ash. This type of fly ash is enriched with toxic and harmful pollutants such as dioxins and heavy metals, and is classified as hazardous waste. It requires complex pretreatment processes such as chelation solidification and stabilization before it can be safely disposed of through landfill. This disposal process is lengthy, costly, and carries the potential risk of secondary pollution.

[0002] Unlike the fly ash generated in the low-temperature section at the tail end of a waste incineration system, the boiler ash generated in the high-temperature zone above 600°C at the front end of the waste incineration process system exhibits significantly lower levels of pollutant precipitation and enrichment, and its particle characteristics are more conducive to subsequent capture and resource recovery. If ash particles can be captured efficiently and in advance in this high-temperature zone, not only can the amount of fly ash generated at the tail end be reduced from the source, but the problems of ash accumulation, wear, and corrosion in subsequent heat exchangers can also be effectively mitigated, thereby extending equipment lifespan and improving the overall heat exchange efficiency and operational stability of the waste heat boiler.

[0003] Under high-temperature conditions, dust can gradually melt and transform into a liquid state at temperatures of 1200~1500℃. During this process, pollutants can be fully released and stabilized. After cooling, the molten slag can be utilized as a raw material for building materials and ceramics. Existing high-temperature dust removal and slag removal technologies mostly focus on a single collection or melting stage, lacking an integrated design of "front-end high-temperature collection—online melting and liquefaction—sensible heat recovery—material resource utilization." This fails to fully utilize the characteristics of high-temperature boiler ash to achieve source reduction and high-value utilization of fly ash.

[0004] Based on the shortcomings of the existing technologies, the development of an integrated technology that can achieve ash particle capture in the high-temperature front-end zone above 600℃, realize online melting and slag discharge at 1200~1500℃, and simultaneously complete the cascade recovery of waste heat and the resource utilization of molten slag has become a key development direction for the waste incineration industry to improve environmental protection benefits, economic benefits and system operation efficiency. Summary of the Invention

[0005] The present invention aims to provide a high-temperature molten slag collection and sensible heat recovery device and method for waste incineration waste heat boilers, in order to solve the problems of energy waste, high escape rate of process fine powder in flue gas, risk of equipment damage, easy clogging of the collection net by the collected molten slag, and low heat recovery rate due to short heat transfer time of heat exchanger in the prior art.

[0006] To achieve the above objectives, the present invention provides the following method:

[0007] The high-temperature molten slag collection and sensible heat recovery equipment for waste incineration boilers provided by this invention is:

[0008] The device includes: an incinerator, a waste heat boiler, a dust agglomeration device, a porous media dust collection device, a high-temperature melting heater, a liquid-solid heat exchanger, a gas-solid heat exchanger, a dust filter ceramic filter element, an ash outlet, and an ash collection hopper.

[0009] The flue gas outlet at the top of the incinerator is fixedly connected to the air inlet of the waste heat boiler. The waste heat boiler has an "L"-shaped pipe structure, including a vertical section and a horizontal section. A dust agglomeration device for fly ash agglomeration is fixedly installed at the top of the horizontal section of the boiler. A porous media dust collection device for dust collection is detachably installed at the top of the waste heat boiler after the fly ash dust agglomeration device. The porous media dust collection device is detachably connected to the top cleaning device. The porous media dust collection device has a porous hollow pipe structure.

[0010] A dust-guiding partition wall for receiving collected fly ash is fixedly provided on the waste heat boiler below the porous media dust collection device; a flow guiding device for conveying and conducting fly ash is fixedly provided on the side of the dust-guiding partition wall near the dust agglomeration device; the high-temperature melting heater is fixedly installed inside the dust-guiding partition wall; a liquid-solid heat exchanger for liquid heat exchange is fixedly provided through the dust-guiding partition wall below the high-temperature melter; the bottom end of the dust-guiding partition wall is fixedly connected to the gas-solid heat exchanger; a dust filter ceramic filter element for filtering gas is detachably connected inside the gas-solid heat exchanger; a dust leakage port for conveying dust is fixedly provided on the gas-solid heat exchanger below the dust filter ceramic filter element; and a dust collection hopper for receiving ash is detachably connected to the lower end of the dust leakage port.

[0011] Preferably, the dust agglomeration device includes: a dust agglomeration spray gun, a dust agglomeration pipe, and a dust agglomerating agent storage device; the dust agglomeration pipe is inclinedly arranged at the top of the transverse section of the waste heat boiler, the dust agglomeration spray gun is fixedly installed inside the dust agglomeration pipe, and the dust agglomerating agent storage device for storing dust agglomerating agent is fixedly connected to the end of the dust agglomeration pipe.

[0012] Preferably, the dust removal device includes: a collection device fixing component, a dust removal conveying pipe, and a rapping dust remover; the bottom of the collection device fixing component is detachably connected to the porous media dust collection device, the top of the collection device fixing component is fixedly connected to one end of the dust removal conveying pipe that conveys air, and the other end of the dust removal conveying pipe is fixedly connected to the rapping dust remover that can output air.

[0013] Preferably, the flow guiding device includes: a power output device, a first transmission shaft, a apex rotation shaft, a second transmission shaft, a flow guiding conveyor plate, a flow guiding conveyor track, and a core rotation shaft; the flow guiding conveyor track is fixedly disposed on the outside of the ash guiding partition wall near the dust agglomeration device, and the flow guiding conveyor plate for conveying fly ash is fixedly connected to the flow guiding conveyor track; the flow guiding conveyor track is sleeved on a plurality of apex rotation shafts, one end of the apex rotation shaft is meshed with one end of the second transmission shaft, and the other end of the second transmission shaft is meshed with the core rotation shaft; the core rotation shaft is meshed with the power output end of the power output device through the first transmission shaft; the power output device outputs power sequentially through the first transmission shaft, the core rotation shaft, and the second shaft to the apex rotation shafts, causing the plurality of apex rotation shafts to rotate, thereby driving the flow guiding conveyor track to rotate.

[0014] Preferably, the high-temperature melting heater includes: a melting heating wall, a melting conveying plate, a melting conveying shaft, a melting output power supply, and a conveying plate rotation shaft; the melting heating wall is fixedly connected to the inner wall of the ash guiding partition wall, and a plurality of melting conveying plates are rotatably connected to both sides of the inner wall of the melting heating wall through the conveying plate rotation shaft, and the melting conveying plates are alternately arranged on both sides of the inner wall of the melting heating wall; the melting output power supply is electrically connected to the melting heating wall through the melting conveying shaft to supply melting energy to the melting heating wall.

[0015] Preferably, the liquid-solid heat exchanger includes: a cold liquid pipeline, a first liquid conveying component, a liquid heat exchange pipeline, a liquid-solid heat exchange wall, a second liquid conveying component, and a hot liquid pipeline; the first liquid conveying component and the second liquid conveying component are fixedly connected to both ends of the liquid-solid heat exchange wall, and the liquid-solid heat exchange wall is fixedly installed inside the dust-guiding partition wall; the cold liquid pipeline is fixedly opened inside the first liquid conveying component; the hot liquid pipeline is fixedly opened inside the second liquid conveying component; the liquid heat exchange pipeline is fixedly opened inside the liquid-solid heat exchange wall; and both ends of the liquid heat exchange pipeline are respectively connected to the cold liquid pipeline and the hot liquid pipeline.

[0016] Preferably, the connection point between the cold liquid pipe and the liquid heat exchange pipe is lower than the connection point between the hot liquid pipe and the liquid heat exchange pipe; the liquid heat exchange pipe is a spiral track.

[0017] Preferably, the inner wall of the gas-solid heat exchanger is fixedly connected to a vibrating ash removal structure for removing residual ash from the dust filter ceramic element; the vibrating ash removal structure is located on the side of the dust filter ceramic element away from the ash guiding partition wall; the vibrating ash removal structure includes an air outlet, a vibrating ball, a vibrating connecting shaft, and a vibrating ball connecting shaft; the vibrating ball connecting shaft is fixedly installed on the top of the inner wall of the gas-solid heat exchanger, and a lightweight elastic structure vibrating connecting shaft is rotatably connected to the vibrating ball connecting shaft; a lightweight vibrating ball is fixedly connected to the end of the vibrating connecting shaft away from the vibrating ball connecting shaft; the gas-solid heat exchanger located below the vibrating ball is fixedly provided with the air outlet, and the air outlet and the ash leakage outlet are fixedly installed on the ash collection hopper.

[0018] Preferably, the ash collection hopper includes an isolation element and an ash collection body; the ash collection body is detachably connected below the air outlet and the ash leakage outlet, and the isolation element is fixedly connected to the bottom of the outer wall of the gas-solid heat exchanger located between the air outlet and the ash leakage outlet; the isolation element divides the top of the ash collection body into an ash collection channel and an airflow recovery channel, the ash collection channel is connected to the ash leakage outlet, and the airflow recovery channel is connected to the ash leakage outlet.

[0019] This invention discloses a method for high-temperature molten slag collection and sensible heat recovery from a waste incineration waste heat boiler, implemented using the aforementioned waste incineration waste heat boiler high-temperature molten slag collection and sensible heat recovery equipment, characterized in that:

[0020] S1: High-temperature flue gas feed

[0021] The high-temperature dust-laden flue gas with a temperature of over 600°C generated by waste incineration enters the waste heat boiler through the incinerator. The waste heat boiler serves as the core working area of ​​the process, providing the basic operating conditions for subsequent ash particle treatment, pollutant reduction and waste heat recovery. At the same time, it can avoid the problem of ash accumulation and wear in downstream heat exchangers and significantly reduce the fly ash production of bag filters.

[0022] S2: Pretreatment for fine particle agglomeration

[0023] After the flue gas enters the waste heat boiler, it first undergoes pretreatment through the dust agglomeration device on the side of the chamber: a suitable high-temperature binder / conditioning medium is sprayed into the high-temperature flue gas through a nozzle, and the bonding and agglomeration effect under high temperature is used to make the fine particles that are difficult to capture at the micrometer level in the flue gas grow rapidly and agglomerate into large-diameter particles, which significantly improves the gas-solid separation efficiency and solves the technical pain point of high fine powder escape rate in traditional processes; at the same time, the injection volume is precisely adjusted by the supporting control module to adapt to different flue gas dust conditions and ensure that the pretreatment effect is stable and controllable.

[0024] S3: High-efficiency capture of high-temperature ash particles at the front end

[0025] The agglomerated and grown ash particles are efficiently separated and captured by the porous media dust collection device to obtain captured ash particles that are suitable for high-temperature conditions above 600℃. In the stage before pollutants are accumulated in large quantities, low-pollution boiler ash is separated from flue gas, reducing the amount of fly ash at the tail end from the source. At the same time, it effectively reduces ash accumulation, wear and corrosion of subsequent heat exchangers, extends the service life of equipment, and improves the overall heat exchange efficiency and operational stability of waste heat boilers.

[0026] S4: Online high-temperature melting and liquefaction and slag removal

[0027] The collected ash particles fall into the high-temperature melting heater below, which provides a high-temperature heat source of 1200-1500℃, causing the ash particles to gradually melt and liquefy. During this high-temperature process, dioxins and heavy metals remaining in the ash are completely decomposed and stabilized, achieving the harmless treatment of fly ash. The molten liquid slag is then heated by the liquid-solid heat exchanger and falls into the gas-solid heat exchanger to heat the gas. The ash slag is then blown to the dust filter ceramic filter element and received by the ash collection hopper through the ash leakage port.

[0028] S5: Waste Heat Recovery and Resource Utilization

[0029] The high-temperature sensible heat generated during the melting process is recovered through the chamber heat exchange structure and used for the cascade utilization of waste heat boilers, further improving the overall energy utilization efficiency of the boilers; the cooled molten slag is a stable glassy / ceramic material, which can be directly used as building material raw materials, ceramic aggregates, etc. to achieve high-value resource utilization.

[0030] S6: Clean flue gas discharge

[0031] The clean, high-temperature flue gas, after pretreatment, capture, and melting, is discharged from the gas-solid heat exchanger and enters the subsequent waste heat recovery system to achieve full recovery and utilization of flue gas heat energy and complete the entire process cycle.

[0032] The beneficial effects of this invention are reflected in:

[0033] High-efficiency capture and harmless treatment: This invention employs a high-temperature inert agglomerating agent spray pretreatment, increasing the particle size of fine powder from a few micrometers to hundreds of micrometers. This makes it easier for dust to contact the inner wall after entering the melting section, improving the melting and capture efficiency by 20-30%. The agglomerating agent is stable and does not decompose at 600-800℃, causing no secondary pollution. After melting, it can be discharged together with the slag, eliminating fly ash generation at the source.

[0034] Waste heat utilization and system efficiency improvement: This invention adopts a structure in which the heat exchange liquid has a longer residence time in the heat exchange stage, avoiding thermal shock and temperature loss, ensuring high temperature stability in the melting section, and the recovered heat is reused in waste heat boilers or plant heating, significantly improving the overall thermal efficiency of the waste incineration system.

[0035] The equipment operates stably for extended periods: it does not alter the original straight-through flue gas layout and requires no additional pressure drop. This invention employs a high-temperature, wear-resistant, supersonic dust agglomeration spray gun to inject agglomerating agent, forming a full-section atomized coverage. Combined with a regular cleaning mechanism, it prevents clogging and wall adhesion.

[0036] By efficiently capturing dust from the upstream high-temperature flue gas, efficient and clean heat exchange can be achieved in the downstream heat exchanger, improving the waste heat recovery efficiency of the entire process system, increasing the boiler efficiency of the waste heat boiler, reducing the amount of steam soot blowing, reducing ash accumulation and wear of the waste heat boiler heat exchanger, and extending the service life of the waste heat boiler heat exchanger.

[0037] Environmentally friendly and cost-effective: It fundamentally reduces fly ash generation, avoids secondary pollution from fly ash, and aligns with the national policy direction of hazardous waste reduction. It eliminates the need for complex fly ash chelation and solidification treatment, significantly reducing hazardous waste disposal costs; its modular design allows for later retrofitting, reducing equipment modification costs. Attached Figure Description

[0038] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0039] Figure 1 A front half-section diagram of the high-temperature molten slag collection and sensible heat recovery equipment for waste incineration waste heat boilers provided in an embodiment of the present invention;

[0040] Figure 2 This is a schematic diagram of the front half-section structure of the dust-guiding partition wall provided in an embodiment of the present invention;

[0041] Figure 3 This is a half-sectional schematic diagram of a liquid-solid heat exchanger and a gas-solid heat exchanger provided in an embodiment of the present invention.

[0042] Reference numerals: 1-Incinerator, 2-Waste heat boiler, 3-Ash removal device, 301-Collection device fixing component, 302-Ash removal conveying pipe, 303-Vibrating ash remover, 4-Dust agglomeration device, 401-Dust agglomeration spray gun, 402-Dust agglomeration pipe, 403-Dust agglomerant storage, 5-Porous media dust collection device, 6-Flow guiding device, 601-Power output device, 602-First transmission shaft, 603-Peak angle rotating shaft, 604-Second transmission shaft, 605-Flow guiding conveying plate, 606-Flow guiding conveying track, 607-Core rotating shaft, 7-High temperature melting heater, 701-Melting heating wall, 702-Melting conveying plate, 703-Melting conveying shaft, 7 04-Melting output power supply, 705-Conveying plate rotating shaft, 8-Ash guiding partition wall, 9-Liquid-solid heat exchanger, 901-Cold liquid pipeline, 902-First liquid conveying component, 903-Liquid heat exchange pipeline, 904-Liquid-solid heat exchange wall, 905-Second liquid conveying component, 906-Hot liquid pipeline, 10-Gas-solid heat exchanger, 11-Dust filter ceramic filter element, 12-Ash leakage port, 13-Ash and slag collection hopper, 1301-Ash and slag collection channel, 1302-Isolation component, 1303-Airflow recovery channel, 1304-Ash and slag collection body, 14-Vibration ash removal structure, 1401-Air outlet, 1402-Vibration ball, 1403-Vibration connecting shaft, 1404-Vibration ball connecting shaft. Detailed Implementation

[0043] To enable those skilled in the art to better understand the present invention, 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.

[0044] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product, or end that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or ends.

[0045] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0046] The boiler ash generated in the high-temperature zone above 600℃ at the front end of the waste incineration process system exhibits significantly lower levels of pollutant precipitation and enrichment, and its particle characteristics are more conducive to subsequent collection and resource recovery. If ash particles can be collected in advance and efficiently in this high-temperature zone, not only can the amount of fly ash generated at the tail end be reduced from the source, but the problems of ash accumulation, wear, and corrosion in subsequent heat exchangers can also be effectively mitigated, thereby extending equipment lifespan and improving the overall heat exchange efficiency and operational stability of the waste heat boiler.

[0047] Under high-temperature conditions, dust can gradually melt and transform into a liquid state at temperatures of 1200~1500℃. During this process, pollutants can be fully released and stabilized. After cooling, the molten slag can be utilized as a raw material for building materials and ceramics. Existing high-temperature dust removal and slag removal technologies mostly focus on a single collection or melting stage, lacking an integrated design of "front-end high-temperature collection—online melting and liquefaction—sensible heat recovery—material resource utilization." This fails to fully utilize the characteristics of high-temperature boiler ash to achieve source reduction and high-value utilization of fly ash.

[0048] Based on the shortcomings of the existing technologies, the development of an integrated technology that can achieve ash particle capture in the high-temperature front-end zone above 600℃, realize online melting and slag discharge at 1200~1500℃, and simultaneously complete the cascade recovery of waste heat and the resource utilization of molten slag has become a key development direction for the waste incineration industry to improve environmental protection benefits, economic benefits and system operation efficiency.

[0049] The present invention aims to provide a high-temperature molten slag collection and sensible heat recovery device and method for waste incineration waste heat boilers, in order to solve the problems of energy waste, high escape rate of process fine powder in flue gas, risk of equipment damage, easy clogging of the collection net by the collected molten slag, and low heat recovery rate due to short heat transfer time of heat exchanger in the prior art.

[0050] Example 1

[0051] like Figure 1 As shown, Figure 1 This is a front half-sectional view of the high-temperature molten slag collection and sensible heat recovery device for a waste incineration waste heat boiler provided in an embodiment of the present invention. The specific embodiment of the present invention provides a high-temperature molten slag collection and sensible heat recovery device for a waste incineration waste heat boiler, the device comprising:

[0052] 1. Incinerator, 2. Waste heat boiler, 4. Dust agglomeration device, 5. Porous media dust collection device, 6. High temperature melting heater, 7. Liquid-solid heat exchanger, 9. Gas-solid heat exchanger, 10. Dust filter ceramic filter element, 11. Ash outlet, 12. Ash collection hopper, 13.

[0053] The flue gas outlet at the top of the incinerator 1 is fixedly connected to the air inlet of the waste heat boiler 2. The waste heat boiler 2 has an "L" shaped pipe structure, including a vertical section and a horizontal section. A dust agglomeration device 4 for fly ash agglomeration is fixedly installed at the top of the horizontal section. A porous media dust collection device 5 for dust collection is detachably installed at the top of the waste heat boiler 2 after the fly ash dust agglomeration device 4. The porous media dust collection device 5 is detachably connected to the ash removal device 3 at the top.

[0054] A dust-guiding partition wall 8 for receiving and collecting fly ash is fixedly provided on the waste heat boiler 2 below the porous media dust collection device 5; a flow guiding device 6 for conveying and conducting fly ash is fixedly provided on the side of the dust-guiding partition wall 8 near the dust agglomeration device 4; a high-temperature melting heater 7 is fixedly installed inside the dust-guiding partition wall 8; a liquid-solid heat exchanger 9 for liquid heat exchange is fixedly provided through the dust-guiding partition wall 8 below the high-temperature melter; the bottom end of the dust-guiding partition wall 8 is fixedly connected to the gas-solid heat exchanger 10; a dust filter ceramic filter element 11 for filtering gas is detachably connected inside the gas-solid heat exchanger 10; a dust leakage port 12 for conveying dust is fixedly provided on the gas-solid heat exchanger 10 below the dust filter ceramic filter element 11; and a slag collection hopper 13 for receiving slag is detachably connected to the lower end of the slag leakage port 12.

[0055] Example 2:

[0056] like Figure 1 , Figure 3 As shown, Figure 1 A front half-section diagram of the high-temperature molten slag collection and sensible heat recovery equipment for waste incineration waste heat boilers provided in an embodiment of the present invention; Figure 3 This is a half-sectional structural diagram of a liquid-solid heat exchanger and a gas-solid heat exchanger provided in an embodiment of the present invention. A specific embodiment of the present invention provides a high-temperature molten slag collection and sensible heat recovery device for waste incineration waste heat boilers, the device comprising:

[0057] 1. Incinerator, 2. Waste heat boiler, 4. Dust agglomeration device, 5. Porous media dust collection device, 6. High temperature melting heater, 7. Liquid-solid heat exchanger, 9. Gas-solid heat exchanger, 10. Dust filter ceramic filter element, 11. Ash outlet, 12. Ash collection hopper, 13.

[0058] The flue gas outlet at the top of the incinerator 1 is fixedly connected to the air inlet of the waste heat boiler 2. The waste heat boiler 2 has an "L" shaped pipe structure, including a vertical section and a horizontal section. A dust agglomeration device 4 for fly ash agglomeration is fixedly installed at the top of the horizontal section. A porous media dust collection device 5 for dust collection is detachably installed at the top of the waste heat boiler 2 after the fly ash dust agglomeration device 4. The porous media dust collection device 5 is detachably connected to the ash removal device 3 at the top.

[0059] A dust-guiding partition wall 8 for receiving collected fly ash is fixedly provided on the waste heat boiler 2 below the porous media dust collection device 5; a flow guiding device 6 for conveying and conducting fly ash is fixedly provided on the side of the dust-guiding partition wall 8 near the dust agglomeration device 4; a high-temperature melting heater 7 is fixedly installed inside the dust-guiding partition wall 8; a liquid-solid heat exchanger 9 for liquid heat exchange is fixedly installed through the dust-guiding partition wall 8 below the high-temperature melter, the liquid-solid heat exchanger 9 includes: a cold liquid pipe 901, a first liquid conveying component 902, a liquid heat exchange pipe 903, a liquid-solid heat exchange wall 904, a second liquid conveying component 905, and a hot liquid pipe 906; the first liquid conveying component 902 and the second liquid conveying component 905 are fixedly connected to the liquid-solid heat exchange wall 904. At both ends, the liquid-solid heat exchange wall 904 is fixedly installed inside the ash-guiding partition wall 8; the cold liquid pipe 901 is fixedly opened inside the first liquid conveying component 902; the hot liquid pipe 906 is fixedly opened inside the second liquid conveying component 905; the liquid heat exchange pipe 903 is fixedly opened inside the liquid-solid heat exchange wall 904; both ends of the liquid heat exchange pipe 903 are connected to the cold liquid pipe 901 and the hot liquid pipe 906 respectively; the connection between the cold liquid pipe 901 and the liquid heat exchange pipe 903 is lower than the connection between the hot liquid pipe 906 and the liquid heat exchange pipe 903; the liquid heat exchange pipe 903 is a spiral track; the bottom end of the ash-guiding partition wall 8 is fixedly connected to the gas-solid heat exchanger 10, and the gas-solid heat exchanger 10 is detachably connected. A dust filter ceramic element 11 is provided for filtering gas. A gas-solid heat exchanger 10 below the dust filter ceramic element 11 has a dust discharge port 12 for conveying dust. A dust collection hopper 13 for receiving dust is detachably connected to the lower end of the dust discharge port 12. A vibrating dust removal structure 14 for removing residual dust from the dust filter ceramic element 11 is fixedly connected to the inner wall of the gas-solid heat exchanger 10. The vibrating dust removal structure 14 is located on the side of the dust filter ceramic element 11 away from the dust guiding partition wall 8. The vibrating dust removal structure 14 includes an air outlet 1401, a vibrating ball 1402, a vibrating connecting shaft 1403, and a vibrating ball connecting shaft 1404. The vibrating ball connecting shaft 1404 is fixedly installed on the top of the inner wall of the gas-solid heat exchanger 10. A lightweight, elastic vibration connecting shaft 1403 is rotatably connected to the vibration ball connecting shaft 1404. A lightweight vibration ball 1402 is fixedly connected to the end of the vibration connecting shaft 1403 away from the vibration ball connecting shaft 1404. A gas-solid heat exchanger located below the vibration ball 1402 has a fixedly provided air outlet 1401. The air outlet 1401 and the ash leakage port 12 are fixedly provided on the ash collection hopper 13. The ash collection hopper 13 includes an isolation member 1302 and an ash collection body 1304. The ash collection body 1304 is detachably connected to the air outlet 1401 and the ash leakage port 12 below. The isolation member 1302 is fixedly connected to the bottom of the outer wall of the gas-solid heat exchanger 10 located between the air outlet 1401 and the ash leakage port 12.The isolator 1302 divides the top of the ash collection body 1304 into an ash collection channel 1301 and an airflow recovery channel 1303. The ash collection channel 1301 is connected to the ash outlet 12, and the airflow recovery channel 1303 is also connected to the ash outlet 12.

[0060] Example 3

[0061] like Figures 1-3 As shown, Figure 1 A front half-section diagram of the high-temperature molten slag collection and sensible heat recovery equipment for waste incineration waste heat boilers provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the front half-section structure of the dust-guiding partition wall provided in an embodiment of the present invention; Figure 3 This is a half-sectional structural diagram of a liquid-solid heat exchanger and a gas-solid heat exchanger provided in an embodiment of the present invention. A specific embodiment of the present invention provides a high-temperature molten slag collection and sensible heat recovery device for waste incineration waste heat boilers, the device comprising:

[0062] 1. Incinerator, 2. Waste heat boiler, 4. Dust agglomeration device, 5. Porous media dust collection device, 6. High temperature melting heater, 7. Liquid-solid heat exchanger, 9. Gas-solid heat exchanger, 10. Dust filter ceramic filter element, 11. Ash outlet, 12. Ash collection hopper, 13.

[0063] The flue gas outlet at the top of the incinerator 1 is fixedly connected to the air inlet of the waste heat boiler 2. The waste heat boiler 2 has an "L"-shaped pipe structure, including a vertical section and a horizontal section. A dust agglomeration device 4 for fly ash agglomeration is fixedly installed at the top of the horizontal section. The dust agglomeration device 4 includes: a dust agglomeration spray gun 401, a dust agglomeration pipe 402, and a dust agglomerating agent storage 403. The dust agglomeration pipe 402 is inclinedly arranged at the top of the horizontal section of the waste heat boiler 2. The dust agglomeration spray gun 401 is fixedly installed inside the dust agglomeration pipe 402. A dust agglomerating agent storage 403 for storing dust agglomerating agent is fixedly connected to the end of the dust agglomeration pipe 402. The composition of the dust agglomerating agent is selected from two options, both of which have been industrially verified: Option A (inert mineral base): wollastonite powder + Kaolin powder mixed slurry (solid content 30-40%), carrier is high-temperature heat transfer oil (280℃ flash point, suitable for 600-800℃ flue gas, non-vaporizing), the needle-like structure of wollastonite powder can achieve "mechanical bridging" of dust particles, kaolin powder can improve the strength of agglomerates and avoid dispersion by high-speed flue gas; Scheme B (high-temperature binder): borosilicate glass powder (softening point 650℃) suspension, carrier is nitrogen (gas injection, no liquid phase, avoids thermal shock), borosilicate glass powder slightly softens at flue gas temperature, forming a viscous coating, binding fine powder into large particles, and after softening, it does not stick to the wall, and after entering the melting section, it can melt into slag with the dust, leaving no residue; The top of the waste heat boiler 2 after the fly ash dust agglomeration device 4 is detachably installed with a porous media dust collection device 5 for dust collection; the porous media dust collection device 5 is a porous air The core pipeline structure; the porous media dust collection device 5 is detachably connected to the top dust removal device 3; the dust removal device 3 includes: a collection device fixing part 301, a dust removal conveying pipe 302 and a vibrating dust remover 303; the bottom of the collection device fixing part 301 is detachably connected to the porous media dust collection device 5, the top of the collection device fixing part 301 is fixedly connected to one end of the dust removal conveying pipe 302 that conveys air, and the other end of the dust removal conveying pipe 302 is fixedly connected to the vibrating dust remover 303 that can output air;

[0064] A dust-guiding partition wall 8 for receiving collected fly ash is fixedly provided on the waste heat boiler 2 below the porous media dust collection device 5; a flow guiding device 6 for conveying and conducting fly ash is fixedly provided on the side of the dust-guiding partition wall 8 near the dust agglomeration device 4; the flow guiding device 6 includes: a power output device 601, a first transmission shaft 602, a top corner rotation shaft 603, a second transmission shaft 604, a flow guiding plate 605, a flow guiding track 606, and a core rotation shaft 607; the flow guiding track 606 is fixedly provided on the outside of the dust-guiding partition wall 8 near the dust agglomeration device 4, and the flow guiding plate 605 for conveying fly ash is fixedly connected to the flow guiding track 606; the flow guiding track 606 is sleeved on several top corner rotation shafts 603, and the top... Angle rotation shaft 603 is meshed with one end of second transmission shaft 604, and the other end of second transmission shaft 604 is meshed with core rotation shaft 607; core rotation shaft 607 is meshed with the power output end of power output device 601 through first transmission shaft 602; power output device 601 outputs power sequentially through first transmission shaft 602, core rotation shaft 607 and second transmission shaft 604 to the apex rotation shaft 603, causing multiple apex rotation shafts 603 to rotate, thereby driving the guide transmission track 606 to rotate; a high-temperature melting heater 7 is fixedly installed inside the ash guiding partition wall 8; the high-temperature melting heater 7 includes: melting heating wall 701, melting conveying plate 702, melting conveying shaft 703, and melting output power supply 70 4. A conveyor plate rotating shaft 705; a melting heating wall 701 is fixedly connected to the inner wall of the ash guiding partition wall 8, and several melting conveyor plates 702 are rotatably connected to both sides of the inner wall of the melting heating wall 701 through the conveyor plate rotating shaft 705. The melting conveyor plates 702 are alternately arranged on both sides of the inner wall of the melting heating wall 701; a melting output power supply 704 is electrically connected to the melting heating wall 701 through the melting conveyor shaft 703 to supply melting energy to the melting heating wall 701; a liquid-solid heat exchanger 9 for liquid heat exchange is fixedly installed in the ash guiding partition wall 8 below the high-temperature melter. The liquid-solid heat exchanger 9 includes: a cold liquid pipe 901, a first liquid conveying component 902, a liquid heat exchange pipe 903, a liquid-solid heat exchange wall 904, and a second liquid conveying component 905. A hot liquid pipeline 906; a first liquid conveying component 902 and a second liquid conveying component 905 are fixedly connected to both ends of a liquid-solid heat exchange wall 904, which is fixedly installed inside a dust-guiding partition wall 8; a cold liquid pipeline 901 is fixedly installed inside the first liquid conveying component 902; a hot liquid pipeline 906 is fixedly installed inside the second liquid conveying component 905; a liquid heat exchange pipeline 903 is fixedly installed inside the liquid-solid heat exchange wall 904; both ends of the liquid heat exchange pipeline 903 are connected to the cold liquid pipeline 901 and the hot liquid pipeline 906, respectively; the connection between the cold liquid pipeline 901 and the liquid heat exchange pipeline 903 is lower than the connection between the hot liquid pipeline 906 and the liquid heat exchange pipeline 903; the liquid heat exchange pipeline 903 is a spiral track.The bottom end of the dust-guiding partition wall 8 is fixedly connected to the gas-solid heat exchanger 10. A dust filter ceramic element 11 for filtering gas is detachably connected inside the gas-solid heat exchanger 10. A dust discharge port 12 for conveying dust is fixedly opened below the dust filter ceramic element 11. A dust collection hopper 13 for receiving ash is detachably connected to the lower end of the dust discharge port 12. A vibration dust removal structure 14 for removing residual ash from the dust filter ceramic element 11 is fixedly connected to the inner wall of the gas-solid heat exchanger 10. The vibration dust removal structure 14 is located on the side away from the dust filter ceramic element 11. The vibration dust removal structure 14 includes an air outlet 1401, a vibrating ball 1402, a vibration connecting shaft 1403, and a vibrating ball connecting shaft 1404. The vibrating ball connecting shaft 1404 is fixedly installed on the top of the inner wall of the gas-solid heat exchanger 10, and a lightweight elastic structure is rotatably connected to the vibrating ball connecting shaft 1404. A vibrating connecting shaft 1403 is fixedly connected to a lightweight vibrating ball 1402 at one end away from the vibrating ball connecting shaft 1404. A gas-solid heat exchanger located below the vibrating ball 1402 has a fixedly provided air outlet 1401. The air outlet 1401 and the ash leakage port 12 are fixedly provided on the ash collection hopper 13. The ash collection hopper 13 includes an isolation member 1302 and an ash collection body 1304. The ash collection body 1304 is detachably connected to the air outlet 1401 and the ash leakage port 12. The isolation member 1302 is fixedly connected to the bottom of the outer wall of the gas-solid heat exchanger 10 located between the air outlet 1401 and the ash leakage port 12. The isolation member 1302 divides the top of the ash collection body 1304 into an ash collection channel 1301 and an airflow recovery channel 1303. The ash collection channel 1301 is connected to the ash leakage port 12, and the airflow recovery channel 1303 is connected to the ash leakage port 12. ;

[0065] Implementation Process: Incinerator 1 burns waste to produce fly ash. The fly ash enters the vertical section and horizontal section of the waste heat boiler 2 through incinerator 1. When passing below the dust agglomeration device 4, the dust agglomeration spray gun 401 sprays dust agglomerating agent to bind the fly ash particles into larger particles, which are then collected by the porous media dust collection device 5. The collected dust is blown into the ash guiding partition wall 8 by the output air force of the rapping soot remover 303 of the ash removal device 3, and the gas is discharged from the gas exhaust port of the waste heat boiler 2. Some of the fly ash is transported to the ash guiding partition wall 8 by the guide conveyor plate 605 of the flow guiding device 6 and heated by the high-temperature melting heater 7. The inlet temperature of the porous media dust collection device 5 is [temperature missing]. The ash is heated to 1500°C by a high-temperature melting heater 7 at 600-800°C using electric heating. The ash turns into liquid and then falls into a gas-solid heat exchanger 10 after being heated by a liquid-solid heat exchanger 9. The ash is then blown to a dust filter ceramic element 11 and collected by an ash collection hopper 13 through an ash outlet 12. As the ash falls into the ash collection hopper 13, the incoming airflow is discharged back into the gas-solid heat exchanger 10 through an airflow recovery pipe. The airflow also blows the vibrating ball 1402 to knock off the dust filter ceramic element 11, shaking off the remaining ash. This completes the high-temperature molten slag collection and sensible heat recovery process of the waste incineration waste heat boiler 2.

[0066] This invention discloses a method for high-temperature molten slag collection and sensible heat recovery from a waste incineration waste heat boiler, implemented using the aforementioned waste incineration waste heat boiler high-temperature molten slag collection and sensible heat recovery equipment, characterized in that:

[0067] S1: High-temperature flue gas feed

[0068] The high-temperature dust-laden flue gas with a temperature of over 600°C generated by waste incineration enters the waste heat boiler 2 through the incinerator 1. The waste heat boiler 2 serves as the core working area of ​​the process, providing the basic working conditions for subsequent ash particle treatment, pollutant reduction and waste heat recovery. At the same time, it can avoid the problem of ash accumulation and wear in the downstream heat exchanger and significantly reduce the fly ash production of the bag filter.

[0069] S2: Pretreatment for fine particle agglomeration

[0070] After the flue gas enters the waste heat boiler 2, it first undergoes pretreatment through the dust agglomeration device 4 on the side of the chamber: a suitable high-temperature binder / conditioning medium is sprayed into the high-temperature flue gas through nozzles. The bonding and agglomeration effect under high temperature conditions is used to make the fine particles that are difficult to capture at the micrometer level in the flue gas grow rapidly and agglomerate into large-diameter particles, which significantly improves the gas-solid separation efficiency and solves the technical pain point of high fine powder escape rate in traditional processes. At the same time, the injection volume is precisely adjusted by the supporting control module to adapt to different flue gas dust conditions and ensure that the pretreatment effect is stable and controllable.

[0071] S3: High-efficiency capture of high-temperature ash particles at the front end

[0072] The agglomerated and grown ash particles are efficiently separated and captured by the porous media dust collection device 5. The captured ash particles are suitable for high-temperature conditions above 600℃. In the stage before pollutants are accumulated in large quantities, low-pollution boiler ash is separated from the flue gas, reducing the amount of fly ash at the tail end from the source. At the same time, it effectively reduces the accumulation of ash, wear and corrosion of subsequent heat exchangers, extends the service life of equipment, and improves the overall heat exchange efficiency and operational stability of the waste heat boiler.

[0073] S4: Online high-temperature melting and liquefaction and slag removal

[0074] The collected ash particles fall into the high-temperature melting heater 7 below, which provides a high-temperature heat source of 1200-1500℃, causing the ash particles to gradually melt and liquefy. During this high-temperature process, the dioxins and heavy metals remaining in the ash are completely decomposed and stabilized, achieving the harmless treatment of fly ash. The molten liquid slag is then heated by the liquid-solid heat exchanger 9 and falls into the gas-solid heat exchanger 10 to heat the gas. The ash slag is then blown to the dust filter ceramic filter element 11 and received by the ash collection hopper 13 through the ash leakage port 12.

[0075] S5: Waste Heat Recovery and Resource Utilization

[0076] The high-temperature sensible heat generated during the melting process is recovered through the chamber heat exchange structure and used for the cascade utilization of waste heat boilers, further improving the overall energy utilization efficiency of the boilers; the cooled molten slag is a stable glassy / ceramic material, which can be directly used as building material raw materials, ceramic aggregates, etc. to achieve high-value resource utilization.

[0077] S6: Clean flue gas discharge

[0078] The clean, high-temperature flue gas, after pretreatment, capture, and melting, is discharged from the gas-solid heat exchanger 10 and enters the subsequent waste heat recovery system to achieve full recovery and utilization of flue gas heat energy and complete the entire process cycle.

[0079] The beneficial effects of this invention are reflected in:

[0080] High-efficiency capture and harmless treatment: This invention employs a high-temperature inert agglomerating agent spray pretreatment, increasing the particle size of fine powder from a few micrometers to hundreds of micrometers. This makes it easier for dust to contact the inner wall after entering the melting section, improving the melting and capture efficiency by 20-30%. The agglomerating agent is stable and does not decompose at 600-800℃, causing no secondary pollution. After melting, it can be discharged together with the slag, eliminating fly ash generation at the source.

[0081] Waste heat utilization and system efficiency improvement: This invention adopts a structure in which the heat exchange liquid has a longer residence time in the heat exchange stage, avoiding thermal shock and temperature loss, ensuring high temperature stability in the melting section, and the recovered heat is reused in waste heat boilers or plant heating, significantly improving the overall thermal efficiency of the waste incineration system.

[0082] The equipment operates stably for extended periods: it does not alter the original straight-through flue gas layout and requires no additional pressure drop. This invention employs a high-temperature, wear-resistant, supersonic dust agglomeration spray gun to inject agglomerating agent, forming a full-section atomized coverage. Combined with a regular cleaning mechanism, it prevents clogging and wall adhesion.

[0083] By efficiently capturing dust from the upstream high-temperature flue gas, efficient and clean heat exchange can be achieved in the downstream heat exchanger, improving the waste heat recovery efficiency of the entire process system, increasing the boiler efficiency of the waste heat boiler, reducing the amount of steam soot blowing, reducing ash accumulation and wear of the waste heat boiler heat exchanger, and extending the service life of the waste heat boiler heat exchanger.

[0084] Environmentally friendly and cost-effective: It fundamentally reduces fly ash generation, avoids secondary pollution from fly ash, and aligns with the national policy direction of hazardous waste reduction. It eliminates the need for complex fly ash chelation and solidification treatment, significantly reducing hazardous waste disposal costs; its modular design allows for later retrofitting, reducing equipment modification costs.

[0085] The above descriptions are merely embodiments of the present invention. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A high-temperature molten slag collection and sensible heat recovery device for waste incineration waste heat boilers, characterized in that, The device includes: an incinerator (1), a waste heat boiler (2), a dust agglomeration device (4), a porous media dust collection device (5), a high-temperature melting heater (7), a liquid-solid heat exchanger (9), a gas-solid heat exchanger (10), a dust filter ceramic filter element (11), an ash outlet (12), and an ash collection hopper (13). The flue gas outlet at the top of the incinerator (1) is fixedly connected to the air inlet of the waste heat boiler (2). The waste heat boiler (2) has an "L"-shaped pipe structure, including a vertical section and a horizontal section. A dust agglomeration device (4) for fly ash dust agglomeration is fixedly installed at the top of the horizontal section of the boiler. A porous media dust collection device (5) for dust collection is detachably installed at the top of the waste heat boiler (2) after the fly ash dust agglomeration device (4). The porous media dust collection device (5) is detachably connected to the ash removal device (3) at the top. The porous media dust collection device (5) has a porous hollow pipe structure. A dust-guiding partition wall (8) for receiving collected fly ash dust is fixedly provided on the waste heat boiler (2) below the porous media dust collection device (5); a flow guiding device (6) for conveying and conducting fly ash is fixedly provided on the side of the dust-guiding partition wall (8) near the dust agglomeration device (4); the high-temperature melting heater (7) is fixedly installed inside the dust-guiding partition wall (8); the liquid-solid heat exchanger for liquid heat exchange is fixedly provided through the dust-guiding partition wall (8) below the high-temperature melter. The heat exchanger (9) has the bottom end of the dust guide partition wall (8) fixedly connected to the gas-solid heat exchanger (10). The gas-solid heat exchanger (10) is detachably connected to the dust filter ceramic filter element (11) for filtering gas. The gas-solid heat exchanger (10) below the dust filter ceramic filter element (11) is fixedly provided with the dust leakage port (12) for conveying dust. The lower end of the dust leakage port (12) is detachably connected to the ash collection hopper (13) for receiving ash.

2. The high-temperature molten slag collection and sensible heat recovery equipment for waste incineration boilers according to claim 1, characterized in that: The dust agglomeration device (4) includes: a dust agglomeration spray gun (401), a dust agglomeration pipe (402), and a dust agglomerating agent storage device (403); The dust agglomeration pipe (402) is inclinedly arranged at the top of the transverse section of the waste heat boiler (2), the dust agglomeration spray gun (401) is fixedly installed inside the dust agglomeration pipe (402), and the dust agglomeration pipe (402) is fixedly connected to the end of the dust agglomeration pipe (402) for storing dust agglomerating agent storage (403).

3. The high-temperature molten slag collection and sensible heat recovery equipment for waste incineration boilers according to claim 1, characterized in that: The dust removal device (3) includes: a collection device fixing component (301), a dust removal conveying pipe (302), and a vibratory dust remover (303); The bottom of the collecting device fixing part (301) is detachably connected to the porous media dust collecting device (5), the top of the collecting device fixing part (301) is fixedly connected to one end of the dust removal conveying pipe (302) that conveys air, and the other end of the dust removal conveying pipe (302) is fixedly connected to the vibrating dust remover (303) that can output air.

4. The high-temperature molten slag collection and sensible heat recovery equipment for waste incineration boilers according to claim 1, characterized in that: The flow guiding device (6) includes: a power output device (601), a first transmission shaft (602), a top corner rotation shaft (603), a second transmission shaft (604), a flow guiding and conveying plate (605), a flow guiding and conveying track (606), and a core rotation shaft (607); The guide rail (606) is fixedly installed on the outside of the dust-guiding partition wall (8) near the dust agglomeration device (4). The guide rail (606) is fixedly connected to the guide conveying plate (605) for conveying fly ash. The guide rail (606) is sleeved on a plurality of apex rotating shafts (603). One end of the apex rotating shaft (603) is meshed with the second transmission shaft (604), and the other end of the second transmission shaft (604) is meshed with the core rotating shaft (607). The core rotating shaft (607) is meshed with the power output end of the power output device (601) through the first transmission shaft (602). The power output device (601) outputs power sequentially through the first transmission shaft (602), the core rotation shaft (607) and the second transmission shaft (604) to the apex rotation shaft (603), causing the plurality of apex rotation shafts (603) to rotate, thereby driving the flow transmission track (606) to rotate.

5. The high-temperature molten slag collection and sensible heat recovery equipment for waste incineration boilers according to claim 1, characterized in that: The high-temperature melting heater (7) includes: a melting heating wall (701), a melting conveying plate (702), a melting conveying shaft (703), a melting output power supply (704), and a conveying plate rotating shaft (705); The melting heating wall (701) is fixedly connected to the inner wall of the ash guiding partition (8). A plurality of melting conveying plates (702) are rotatably connected to both sides of the inner wall of the melting heating wall (701) through the conveying plate rotating shaft (705). The melting conveying plates (702) are alternately arranged on both sides of the inner wall of the melting heating wall (701). The melting output power supply (704) is electrically connected to the melting heating wall (701) through the melting conveying shaft (703) to supply melting energy to the melting heating wall (701).

6. The high-temperature molten slag collection and sensible heat recovery equipment for waste incineration boilers according to claim 1, characterized in that: The liquid-solid heat exchanger (9) includes: a cold liquid pipe (901), a first liquid conveying component (902), a liquid heat exchange pipe (903), a liquid-solid heat exchange wall (904), a second liquid conveying component (905), and a hot liquid pipe (906); The first liquid conveying component (902) and the second liquid conveying component (905) are fixedly connected to both ends of the liquid-solid heat exchange wall (904), and the liquid-solid heat exchange wall (904) is fixedly installed inside the ash-guiding partition wall (8); the cold liquid pipe (901) is fixedly opened inside the first liquid conveying component (902); the hot liquid pipe (906) is fixedly opened inside the second liquid conveying component (905); the liquid heat exchange pipe (903) is fixedly opened inside the liquid-solid heat exchange wall (904); the two ends of the liquid heat exchange pipe (903) are respectively connected to the cold liquid pipe (901) and the hot liquid pipe (906).

7. The high-temperature molten slag collection and sensible heat recovery equipment for waste incineration boilers according to claim 6, characterized in that: The connection between the cold liquid pipe (901) and the liquid heat exchange pipe (903) is lower than the connection between the hot liquid pipe (906) and the liquid heat exchange pipe (903); The liquid heat exchange pipe (903) is a spiral track.

8. The high-temperature molten slag collection and sensible heat recovery equipment for waste incineration boilers according to claim 1, characterized in that: The gas-solid heat exchanger (10) has a vibrating dust removal structure (14) fixedly connected to its inner wall for removing residual ash from the dust filter ceramic element (11); the vibrating dust removal structure (14) is located on the side of the dust filter ceramic element (11) away from the dust guiding partition wall (8); the vibrating dust removal structure (14) includes an air outlet (1401), a vibrating ball (1402), a vibrating connecting shaft (1403), and a vibrating ball connecting shaft (1404); The vibrating ball connecting shaft (1404) is fixedly installed on the top of the inner wall of the gas-solid heat exchanger (10). A lightweight elastic structure vibrating connecting shaft (1403) is rotatably connected to the vibrating ball connecting shaft (1404). A lightweight vibrating ball (1402) is fixedly connected to the end of the vibrating connecting shaft (1403) away from the vibrating ball connecting shaft (1404). The gas-solid heat exchanger located below the vibrating ball (1402) is fixedly provided with the air outlet (1401). The air outlet (1401) and the ash leakage port (12) are fixedly installed on the ash collection hopper (13).

9. The high-temperature molten slag collection and sensible heat recovery equipment for waste incineration boilers according to claim 8, characterized in that: The ash collection hopper (13) includes: a separator (1302) and an ash collection body (1304); The ash collection body (1304) is detachably connected below the air outlet (1401) and the ash leakage port (12). The isolation member (1302) is fixedly connected to the bottom of the outer wall of the gas-solid heat exchanger (10) located between the air outlet (1401) and the ash leakage port (12). The isolation member (1302) divides the top of the ash collection body (1304) into an ash collection channel (1301) and an airflow recovery channel (1303). The ash collection channel (1301) is connected to the ash leakage port (12), and the airflow recovery channel (1303) is connected to the ash leakage port (12).

10. A method for high-temperature molten slag collection and sensible heat recovery from a waste incineration waste heat boiler, implemented using the high-temperature molten slag collection and sensible heat recovery equipment according to any one of claims 1-9, characterized in that: S1: High-temperature flue gas feed The high-temperature dust-laden flue gas above 600°C generated by waste incineration enters the waste heat boiler (2) through the incinerator (1). The waste heat boiler (2) serves as the core working area of ​​the process, providing basic working conditions for subsequent ash particle treatment, pollutant reduction and waste heat recovery. At the same time, it can avoid the problem of ash accumulation and wear of downstream heat exchangers and significantly reduce the fly ash production of bag filters. S2: Pretreatment for fine particle agglomeration After the flue gas enters the waste heat boiler (2), it first undergoes pretreatment through the dust agglomeration device (4) on the side of the chamber: a suitable high-temperature binder / conditioning medium is sprayed into the high-temperature flue gas through a nozzle, and the bonding and agglomeration effect under high temperature is used to make the fine particles that are difficult to capture at the micrometer level in the flue gas grow rapidly and agglomerate into large-diameter particles, which significantly improves the gas-solid separation efficiency and solves the technical pain point of high fine powder escape rate in traditional processes; at the same time, the injection volume is precisely adjusted by the matching control module to adapt to different flue gas dust conditions and ensure that the pretreatment effect is stable and controllable. S3: High-efficiency capture of high-temperature ash particles at the front end The ash particles that have grown through agglomeration are efficiently separated and captured by the porous media dust collection device (5) to obtain the captured ash particles, which are suitable for high-temperature working conditions above 600℃. In the stage before pollutants have accumulated in large quantities, the low-pollution boiler ash is separated from the flue gas, reducing the amount of fly ash at the tail end from the source. At the same time, it effectively reduces the ash accumulation, wear and corrosion of the subsequent heat exchangers, extends the service life of the equipment, and improves the overall heat exchange efficiency and operational stability of the waste heat boiler. S4: Online high-temperature melting and liquefaction with slag removal The collected ash particles fall into the high-temperature melting heater (7) below, which provides a high-temperature heat source of 1200-1500℃, causing the ash particles to gradually melt and liquefy. During this high-temperature process, the dioxins and heavy metal toxic and harmful pollutants remaining in the ash are completely decomposed and stabilized, achieving the harmless treatment of fly ash. The molten liquid slag is heated by the liquid-solid heat exchanger (9) and then falls into the gas-solid heat exchanger (10) to heat the gas. The ash slag is then blown to the dust filter ceramic filter element (11) and received by the ash slag collection hopper (13) through the ash leakage port (12). S5: Waste Heat Recovery and Resource Utilization The high-temperature sensible heat generated during the melting process is recovered through the chamber heat exchange structure and used for the cascade utilization of waste heat boilers, further improving the overall energy utilization efficiency of the boilers; the cooled molten slag is a stable glassy / ceramic material, which can be directly used as building material raw materials, ceramic aggregates, etc. to achieve high-value resource utilization. S6: Clean flue gas discharge The clean, high-temperature flue gas, after pretreatment, capture, and melting, is discharged from the gas-solid heat exchanger (10) and enters the subsequent waste heat recovery system to achieve full recovery and utilization of flue gas heat energy and complete the entire process cycle.

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