A ceramic heat exchanger and ash cleaning device for incineration boiler

Abstract

The present invention discloses a ceramic heat exchanger and a ash cleaning device for an incineration boiler, comprising a ceramic heat exchanger and a ash cleaning device. The ceramic heat exchanger comprises several groups of parallel tube panels, each group of tube panels comprising correspondingly parallel upper and lower headers and a plurality of heat exchange tubes vertically arranged between the upper and lower headers; two adjacent groups of tube panels form a series structure; the ash cleaning device comprises a ash cleaning pipeline and a lifting mechanism; the ash cleaning pipeline comprises two groups of parallel cooling water inlet headers and cooling water outlet headers, and a plurality of ash cleaning pipes arranged vertically and horizontally to the cooling water inlet headers and cooling water outlet headers, the two ends of the ash cleaning pipes being connected to the cooling water inlet headers and cooling water outlet headers respectively through vertical water pipes; the ash cleaning pipes are spaced apart from the tube panels. The ceramic heat exchanger of the present invention adopts a header structure composed of tube panels, which has high heat exchange efficiency; the ash cleaning device adopts an array-type ash cleaning pipe structure adapted to the ceramic heat exchanger, which improves the ash cleaning efficiency of the heat exchange tubes.

Description

Technical Field

[0001] The present invention relates to the technical field of incineration boilers, and in particular to a ceramic heat exchanger and a dust cleaning device for incineration boilers. Background Art

[0002] Currently, landfill and incineration are the primary methods for disposing domestic waste both domestically and internationally. As land resources become increasingly scarce, the advantages of incineration are becoming increasingly apparent, and waste-to-energy technology has become the primary method for disposing domestic waste. The heat exchangers in the boilers of waste-to-energy plants are mostly made of alloy steel, which is subject to high-temperature corrosion. The steam temperature in the incineration boilers generally does not exceed 450°C, resulting in a total plant cycle thermal efficiency of only around 22%, with approximately 78% of the energy lost. In order to improve boiler parameters and increase the energy utilization efficiency of the entire plant, Chinese patent CN215764998U discloses "a high-parameter thermal system suitable for waste incineration". The system uses a silicon carbide ceramic heat exchanger to exchange heat between high-temperature flue gas and the circulating air in the ceramic heat exchanger tube, raising the temperature of the pure air to 712°C. The heat is then exchanged into the circulating water by an external heat exchanger, which can heat the steam to 540°C and then enter the steam turbine to generate electricity. This high-parameter thermal system can increase the main steam parameters to 9.2MPa / 540°C while avoiding high-temperature corrosion of the waste incineration superheater, thereby increasing the plant-wide cycle thermal efficiency of the waste incineration power generation project to about 30%. This system has greatly improved the energy utilization efficiency of the waste incineration power plant, and has outstanding energy-saving and emission reduction effects. However, during the application of this system, it is inevitable to solve the problem of dust accumulation on the ceramic heat exchanger. Because dust on the heating surface is inevitable during the operation of the incineration boiler, dust on the heating surface of the heat exchange tube will increase the thermal resistance. As for the metal heat exchanger, the thermal conductivity of the dust layer on the heating surface is more than 100 times lower than that of the metal heating surface. In comparison, the dust on the heating surface of the silicon carbide ceramic heat exchanger has a greater impact on the thermal conductivity. Dust accumulation will seriously affect the heat transfer of the ceramic heat exchanger heating surface, resulting in an increase in the exhaust temperature of the incineration boiler, increased heat loss, and reduced thermal efficiency.

[0003] Chinese patent CN215336417U discloses a "sootblowing system for a waste incineration waste heat boiler." This system employs a long, retractable steam sootblower installed on the horizontal flue superheater, a common sootblowing method for horizontal incineration boilers. Steam sootblowing effectively removes accumulated soot from the metal heating surface, improving the superheater's heat exchange efficiency. However, steam sootblowing technology cannot be applied to silicon carbide ceramic heat exchangers because silicon carbide ceramics are susceptible to cracking in high-temperature steam environments, posing an explosion risk. Other commonly used soot-cleaning techniques, such as mechanical vibration or shock wave pulses, are also unsuitable for silicon carbide ceramic heat exchangers, as silicon carbide ceramics are brittle and have poor mechanical impact resistance. Summary of the Invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a ceramic heat exchanger structure that can meet the requirements of efficient cleaning and a cleaning device adapted to the heat exchanger. While meeting the requirements of efficient heat exchange of the incineration boiler, the cleaning device can ensure that the ceramic heat exchanger is in a good heat exchange state.

[0005] Technical solution: The ceramic heat exchanger and ash cleaning device for an incineration boiler described in the present invention comprises:

[0006] A ceramic heat exchanger, pre-buried between the walls of the incineration boiler, comprises a plurality of sets of parallel tube panels, each set of which comprises a corresponding upper and lower headers arranged in parallel, and a plurality of heat exchange tubes arranged vertically between the upper and lower headers; two adjacent sets of tube panels are connected in sequence to the upper or lower header via connecting pipes to form a series structure;

[0007] The cleaning device includes a cleaning pipeline and a lifting mechanism for driving the cleaning pipeline to rise and fall; the cleaning pipeline includes two groups of parallel cooling water inlet headers, cooling water outlet headers and a plurality of cleaning pipes arranged vertically and horizontally to the cooling water inlet headers and cooling water outlet headers, and the two ends of the cleaning pipes are connected to the cooling water inlet headers and cooling water outlet headers through vertical water pipes respectively; the number of the cleaning pipes is one group more than the number of tube panels, and the cleaning pipes are spaced apart from the tube panels.

[0008] Preferably, the lifting mechanism includes a hoisting mechanism, guide pulleys arranged on both sides of the hoisting mechanism, and two sets of lifting wires connecting the hoisting mechanism. The lifting wires are respectively wound around the guide pulleys and the lower ends are connected to the cleaning pipeline.

[0009] Preferably, the hoisting mechanism is an electric double-rope hoist.

[0010] Preferably, the ash cleaning pipe is provided with arc-shaped ash cleaning grooves along both sides of the pipe body corresponding to the heat exchange pipe.

[0011] Preferably, a vibration sensor is provided on the outer side of the upper end of the vertical water pipe, and the vibration sensor is electrically connected to a signal amplifier and a data acquisition card in sequence, and the data acquisition card transmits data to a host computer.

[0012] Preferably, the upper end of the vertical water pipe is flexibly connected to the cooling water inlet header or the cooling water outlet header.

[0013] Preferably, the cooling water inlet header and the cooling water outlet header are respectively connected to stainless steel flexible water delivery pipes.

[0014] Preferably, the diameter of the vertical water pipe is smaller than the distance between two adjacent groups of upper headers or lower headers; the diameter of the ash cleaning pipe is adapted to the distance between the two groups of ash cleaning pipes.

[0015] Preferably, the upper header and the lower header of the ceramic heat exchanger are respectively arranged on the outside of the incineration boiler wall.

[0016] Preferably, the connecting pipes connecting the two groups of tube panels are respectively connected to the upper headers or lower headers at intervals, and the connecting pipes are provided at the ends of the two adjacent groups of upper headers or lower headers.

[0017] Beneficial effects: Compared with the prior art, the present invention has the following outstanding advantages: 1. The ceramic heat exchanger of the present invention adopts a header structure composed of tube screens, and the tube-in-tube heat exchange tubes are neat, and the matching cleaning device is easy to move up and down to perform cleaning operations; 2. The upper header and the lower header of the heat exchanger are located outside the wall of the incineration boiler. The welding positions of the header and the heat exchange tube are not affected by high-temperature corrosion and are not easily damaged, and there is no need to consider the problem of dust accumulation in the header; 3. The cleaning device of the present invention adopts an array-type cleaning pipe structure that is compatible with the ceramic heat exchanger. When the cleaning pipe is in point contact with the heating surface of the heat exchange tube of the ceramic superheater during the up and down movement, the cleaning force is large, which can cope with crusting and dust accumulation; if a structure with an arc-shaped cleaning trough is adopted, the cleaning efficiency of floating dust can be improved; 4. The vertical water pipe and the cooling water inlet header and the cooling water outlet header are flexibly connected, which can ensure that the cleaning pipe is cleaned to the greatest extent while protecting the heating surface of the heat exchange tube from damage; 5. The cleaning pipeline is water-cooled to protect the cleaning pipe. It is in a relatively low temperature state in a high-temperature flue gas environment. In addition, except for the ash cleaning pipe, the other structures of the ash cleaning device are located outside the incineration boiler, and there are no vulnerable parts, so that the entire ash cleaning device is in a relatively safe environment and extends its service life. In addition, while ensuring the cooling temperature range of the ash cleaning pipe, the calorific value of the high-temperature flue gas absorbed by the cooling water in the ash cleaning pipe can be adjusted by adjusting the flow rate of the cooling water in the ash cleaning pipe, thereby indirectly adjusting the heat absorption of the circulating medium in the ceramic heat exchanger, thereby regulating the temperature of the medium in the heat exchanger and protecting the ceramic heat exchanger. 6. A vibration sensor is provided on the ash cleaning pipeline, which can monitor the vibration of the ash cleaning pipe during the cleaning process in real time and judge the dust accumulation and thinning of the heating surface of the heat exchanger. For example, during the operation of the ash cleaner, the ash cleaning pipe vibrates abnormally when passing a certain position on the heating surface of the heat exchanger. At this position, the heating surface may have hard dust accumulation or there may be thinning damage to the heating surface of the heat exchanger. The position can be marked to facilitate focus on possible damage positions during shutdown and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the installation structure of the ceramic heat exchanger and the dust cleaning device of the present invention;

[0019] Figure 2 for Figure 1 Right view of the installation status of the ceramic heat exchanger and the cleaning pipeline;

[0020] Figure 3 for Figure 2 Main view of the ceramic heat exchanger;

[0021] Figure 4 for Figure 3 Side view of the ceramic heat exchanger;

[0022] Figure 5 for Figure 2 Schematic diagram of the intermediate cleaning pipeline structure;

[0023] Figure 6 for Figure 5 Side view of the intermediate cleaning pipeline structure;

[0024] Figure 7 for Figure 1 The middle cleaning device is located in the middle section of the ceramic pipeline cleaning structure diagram;

[0025] Figure 8 for Figure 1 Schematic diagram of the structure of the middle cleaning device located in the lower section of the ceramic pipeline cleaning.

[0026] Figure numerals: 1. Incineration boiler wall; 2. Ceramic heat exchanger; 21. Heat exchange tube; 22. Upper header; 23. Lower header; 24. Connecting pipe; 3. Cleaning device; 31. Cleaning pipeline; 311. Cooling water inlet header; 312. Vertical water pipe; 313. Cleaning pipe; 314. Water delivery pipe; 315. Connecting lifting lug; 316. Cooling water outlet header; 32. Lifting mechanism; 321. Winch mechanism; 322. Guide pulley; 323. Lifting wire; 4. Vibration sensor. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be combined with the appended drawings of the embodiments of the present invention. Figure 1-8 The technical solutions of the embodiments of the present invention are clearly and completely described as shown. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field fall within the scope of protection of the present invention.

[0028] Combine Figure 1-4As shown, a ceramic heat exchanger and a dust cleaning device for an incineration boiler according to the present invention include a ceramic heat exchanger 2 and a dust cleaning device 3; the ceramic heat exchanger 2 includes a plurality of groups of vertically arranged parallel tube panels, each group of tube panels includes a corresponding upper header 22 and a lower header 23 arranged in parallel and a plurality of heat exchange tubes 21 vertically arranged between the upper header and the lower header, the number of heat exchange tubes 21 in each group is determined according to the size of the inner cavity of the flue of the incineration boiler, and the width of the tube panel composed of the plurality of heat exchangers is consistent with the width of the inner cavity of the incineration boiler. Two adjacent groups of tube panels are connected in sequence to the upper header 22 or the lower header 23 through the connecting pipes 24 to form a series structure; specifically, the connecting pipes 24 connecting the two groups of tube panels are connected to the upper header 22 or the lower header 23 at intervals, and the connecting pipes 24 are arranged at the ends of the two adjacent groups of upper headers or lower headers. The position of the connecting pipes 24 should not affect the lifting and lowering operation of the cleaning pipes; more specifically, the adjacent connecting pipes connecting the two adjacent groups of lower headers and the connecting pipes connecting the two adjacent groups of upper headers are respectively located at the front and rear sides of the tube panels to improve the heat exchange efficiency of the air in the two adjacent groups of tube panels. The upper header 22 and the lower header 23 of the ceramic heat exchanger 2 are respectively arranged on the outside of the incineration boiler wall 1, that is, only the heat exchange tube 21 is pre-buried in the incineration boiler wall. The circulating air in the ceramic heat exchanger tube exchanges heat with the high-temperature flue gas in the incineration boiler, and then the heat is replaced into the circulating water by the heat exchanger outside the incineration boiler, which can heat the water to 540°C hot steam. Under this steam parameter, the whole plant cycle thermal efficiency of waste incineration power generation can be increased to about 30%, and the energy utilization efficiency is greatly improved; the upper header 22 and the lower header 23 are located on the outside of the incineration boiler wall 1, and the welding positions of the upper header, the lower header and the heat exchange tube are not affected by high temperature and corrosion, and are not easily damaged; the ceramic heat exchanger 2 adopts a header structure composed of tube screens, and the shell and tube heat exchange tubes are neat, which is easy to operate the cleaning device.

[0029] Reference Figure 5-6As shown, the dust cleaning device 3 includes a dust cleaning pipeline 31 and a lifting mechanism 32 that drives the dust cleaning pipeline up and down. The dust cleaning pipeline 31 includes two sets of parallel cooling water inlet headers 311 and cooling water outlet headers 316. The cooling water inlet headers 311 and cooling water outlet headers 316 are respectively connected to stainless steel flexible water delivery pipes 314. Cooling water is delivered to the cooling water inlet headers 311 through the delivery pipes 314, and the cooling water outlet headers 316 discharge the heat-exchanged cooling water through the delivery pipes 314. A plurality of ash cleaning pipes 313 are vertically provided below the cooling water inlet header 311 and the cooling water outlet header 316. The ash cleaning pipes 313 are in the same horizontal plane and parallel to each other. The two ends of the ash cleaning pipes 313 are connected to the cooling water inlet header 311 and the cooling water outlet header 316 through vertical water pipes 312 respectively. The number of ash cleaning pipes 313 is one group more than the number of tube screens. The ash cleaning pipes 313 and the vertical water pipes connected to the ash cleaning pipes are arranged at intervals with the tube screens. In the process of driving the ash cleaning pipeline 31 to rise and fall, and in the process of the ash cleaning pipes moving up and down, the accumulated dust on the heat exchange tubes can be cleaned. The diameter of the vertical water pipe 312 is at least 3mm smaller than the spacing between two adjacent sets of upper headers 22 or lower headers 23, allowing the ash cleaning pipeline to move freely up and down between the tube screens. The diameter of the ash cleaning pipe 313 is adapted to the spacing between the two sets of ash cleaning pipes 313. If the ash cleaning pipe and the heat exchange tube adopt a point contact structure, the diameter of the ash cleaning pipe is slightly smaller than the 1-3mm spacing between the heat exchange tubes of the tube screen. Driven by the lifting mechanism, the ash cleaning pipe moves up and down along the heating surface of the ceramic heat exchange tube, thereby removing the accumulated ash on the heating surface of the ceramic heat exchanger. The ash cleaning pipe and vertical water pipe in the ash cleaning pipeline are located in the flue of the incineration boiler. The ash cleaning pipe and vertical water pipe are made of high-temperature and corrosion-resistant stainless steel, such as 310s stainless steel. Cooling water also flows between them for cooling protection to maintain the good mechanical properties of the ash cleaning pipe, enabling it to operate stably and reliably for a long period of time.

[0030] Reference Figure 1 As shown, the lifting mechanism 32 includes a hoisting mechanism 321, guide pulleys 322 on either side of the hoisting mechanism, and two sets of lifting wires 323 connected to the hoisting mechanism. The hoisting mechanism 321 is an electric double-rope hoist. One end of the two lifting wires 323 is connected to the electric double-rope hoist. The lifting wires 323 are respectively wound around the guide pulleys 322, thereby guiding the lifting wires 323 and reducing lifting resistance. The tops of the cooling water inlet and outlet headers 311 and 316 are each equipped with a connecting lug 315, and the free ends of the lifting wires 323 are connected to the connecting lugs 315. When the ash cleaning pipeline 31 is in the upward stroke of the lifting mechanism 32, the two sets of lifting wires 323 are wound and retracted by the hoisting mechanism 321 along the guide pulleys 322. When the ash cleaning pipeline 31 is in the downward stroke, the two sets of lifting wires 323 run in opposite directions, ensuring the horizontal and synchronous lifting movement of the ash cleaning device.

[0031] In one embodiment, if Figure 2As shown, the dust on the heated surface of the ceramic heat exchanger is mainly concentrated on the windward side or leeward side of the heat exchange tube. Therefore, the cleaning pipe 313 is set on the windward side and leeward side of the heat exchange tube, and the cleaning pipe 313 and the heat exchange tube 21 adopt a point contact method, which has a strong cleaning force, obvious cleaning effect, and is not easy to damage the heated surface of the heat exchanger.

[0032] In another embodiment, the cleaning pipe 313 is provided with arc-shaped cleaning grooves along both sides of the pipe body corresponding to the heat exchange tube 21. This type of cleaning pipe structure can increase the contact area with the heat exchange tube, thereby efficiently cleaning the accumulated dust on the heat exchange tube facing the direction of flue gas flow. It should be noted that the specific structure of the cleaning pipe 313 needs to be selected based on the dust accumulation on the heat exchange tube. If the accumulated dust is floating dust, a cleaning pipe with an arc-shaped cleaning groove structure can achieve a good cleaning effect. If the accumulated dust forms a shell, a point contact method can improve the efficiency of breaking the shell, thereby improving the cleaning effect.

[0033] In one embodiment, if Figure 5 As shown, vibration sensors 4 are installed on the outer sides of the connections between the upper ends of vertical water pipes 312 and the cooling water inlet and outlet headers 311 and 316. These sensors are unaffected by the high temperatures of the incineration boiler and can accurately sense the vibration frequency of the ash cleaning pipe during its upward and downward movement. Vibration sensors 4 are electrically connected to a signal amplifier and a data acquisition card. The vibration sensor amplifies the vibration frequency signal through the signal amplifier and transmits it to the data acquisition card. The data acquisition card transmits the vibration frequency signal to a host computer for data processing, thereby monitoring the vibration of the ash cleaning pipe 313 during operation in real time and determining the presence of dust accumulation or thinning on the heat exchanger's heating surface. If abnormal vibration occurs at a location on the heating surface of the heat exchanger during operation, it indicates that the heating surface may be experiencing hard dust accumulation or thinning damage. This alarm can be triggered to alert the user to focus on this location during boiler shutdown and maintenance, allowing for repair and replacement. The signal amplifier, data acquisition card, and host computer can all be integrated using existing technologies to achieve their functions.

[0034] In one embodiment, if Figure 5 As shown, a flexible connection is adopted at the connection between the upper end of the vertical water pipe 312 and the cooling water inlet header 311 or the cooling water outlet header 316. When there is an abnormality in the heat exchange pipe or the ash cleaning pipe, the vertical water pipe and the cooling water inlet header 311 or the cooling water outlet header 316 are deformed and displaced, thereby protecting the heating surface of the heat exchange pipe or the ash cleaning pipe, and preventing the ash cleaning pipe and the heating surface of the heat exchange pipe from having hard contact under interference conditions; if a large deformation is found at the flexible connection of the vertical water pipe, the lifting mechanism is stopped immediately, and the ash cleaning pipe is inspected, repaired and the fault is cleared.

[0035] The working method or working principle of the present invention:

[0036] When working, the dust cleaning device starts running as follows Figure 1 As shown, the ash cleaning pipe is spaced apart from the heat exchange pipe, and the ash cleaning pipe is located at the upper end of the inner side of the incineration boiler wall 1; when the ash cleaning pipe 31 performs the ash cleaning operation, the ash cleaning pipe 31 moves downward under the drive of the lifting mechanism, and the intermediate state of the operation is as shown in FIG. Figure 7 As shown, the relative movement of the cleaning pipe and the heat exchange surface of the heat exchange pipe in this process can achieve the removal of the accumulated dust; after the cleaning is completed once, the cleaning pipe 31 runs to the bottom as shown in FIG. Figure 8 As shown. The ash cleaning pipe moves from its initial position at the top, through the intermediate state, to its bottom position, and then reverses from the bottom position through the intermediate state to its top position, forming a cleaning cycle. Under normal circumstances, the ash cleaning device 3 operates once a day, performing a reciprocating cleaning cycle. This cycle can also be adjusted based on the heat exchanger temperature and ash accumulation. When the ash cleaning device is not operating, the ash cleaning pipe 31 is in an elevated state, ensuring that the ash cleaning pipe 313 is located on the upper side of the incineration boiler wall.

[0037] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A heat exchange and ash cleaning device for an incineration boiler, characterized in that: include: A ceramic heat exchanger (2), the ceramic heat exchanger (2) being pre-buried between the walls (1) of the incineration boiler, comprising a plurality of groups of tube panels arranged in parallel, wherein any group of the tube panels comprises an upper header (22) and a lower header (23) arranged in parallel, and a plurality of heat exchange tubes (21) vertically arranged between the upper header and the lower header; two adjacent groups of tube panels are sequentially connected to the upper header (22) or the lower header (23) via a connecting pipe (24) to form a series structure; The ash cleaning device (3) comprises an ash cleaning pipeline (31) and a lifting mechanism (32) for driving the ash cleaning pipeline to rise and fall; the ash cleaning pipeline (31) comprises two sets of parallel cooling water inlet headers (311), cooling water outlet headers (316), and a plurality of ash cleaning pipes (313) arranged vertically and horizontally to the cooling water inlet headers (311) and cooling water outlet headers (316); both ends of the ash cleaning pipes (313) are respectively connected to the cooling water inlet headers (311) and cooling water outlet headers (316) through vertical water pipes (312); the number of the ash cleaning pipes (313) is one set more than the number of the tube panels, and the ash cleaning pipes (313) are arranged at intervals from the tube panels.

2. The heat exchange and ash cleaning device for an incineration boiler according to claim 1, characterized in that: The lifting mechanism (32) comprises a hoisting mechanism (321), guide pulleys (322) arranged on both sides of the hoisting mechanism, and two sets of hoisting steel wires (323) connected to the hoisting mechanism. The hoisting steel wires (323) are respectively wound around the guide pulleys (322) and have their lower ends connected to the dust cleaning pipeline (31).

3. The heat exchange and ash cleaning device for an incineration boiler according to claim 2, characterized in that: The hoisting mechanism (321) is an electric double-rope hoist.

4. The heat exchange and ash cleaning device for an incineration boiler according to claim 1, characterized in that: The ash cleaning pipe (313) is provided with arc-shaped ash cleaning grooves along both sides of the pipe body corresponding to the heat exchange pipe (21).

5. The heat exchange and ash cleaning device for an incineration boiler according to claim 1, characterized in that: A vibration sensor (4) is provided on the outer side of the upper end of the vertical water pipe (312), and the vibration sensor (4) is electrically connected to a signal amplifier and a data acquisition card in sequence, and the data acquisition card transmits data to a host computer.

6. The heat exchange and ash cleaning device for an incineration boiler according to claim 1, characterized in that: The upper end of the vertical water pipe (312) is flexibly connected to the cooling water inlet header (311) or the cooling water outlet header (316).

7. The heat exchange and ash cleaning device for an incineration boiler according to claim 1, characterized in that: The cooling water inlet header (311) and the cooling water outlet header (316) are respectively connected to the stainless steel flexible water delivery pipe (314).

8. The heat exchange and ash cleaning device for an incineration boiler according to claim 1, characterized in that: The diameter of the vertical water pipe (312) is smaller than the distance between two adjacent groups of upper headers (22) or lower headers (23); and the diameter of the ash cleaning pipe (313) is adapted to the distance between the two groups of ash cleaning pipes (313).

9. The heat exchange and ash cleaning device for an incineration boiler according to claim 1, characterized in that: The upper header (22) and the lower header (23) of the ceramic heat exchanger (2) are respectively arranged on the outside of the incineration boiler wall (1).

10. The heat exchange and ash cleaning device for an incineration boiler according to claim 1, characterized in that: The connecting pipes (24) connecting the two groups of tube panels are respectively connected to the upper header (22) or the lower header (23) at intervals, and the connecting pipes (24) are arranged at the ends of the two adjacent groups of upper headers or lower headers.

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