Water cooling wall assembly for radiation waste heat boiler, radiation waste heat boiler and control method for rapping and dedusting radiation waste heat boiler

Abstract

The invention relates to the technical field of coal gasification, in particular to a water cooling wall assembly for a radiation waste heat boiler, the radiation waste heat boiler and a control method for rapping and dedusting the radiation waste heat boiler, the water cooling wall assembly comprises a barrel water cooling wall, and a synthesis gas channel penetrating in the first direction is formed in the inner side of the barrel water cooling wall; the rapping dust removal devices are mounted on the outer side of the barrel water-cooled wall and are arranged at intervals in the circumferential direction of the barrel water-cooled wall, each rapping dust removal device comprises a mounting base connected with the barrel water-cooled wall, a rapping piece and a driving assembly, the rapping piece and the driving assembly are arranged on the mounting base, and the rapping piece can be driven by the driving assembly to move relative to the mounting base; when the cylinder water-cooled wall vibrates, the cylinder water-cooled wall can move towards the direction of the cylinder water-cooled wall to collide with the mounting seat, the mounting seat and the cylinder water-cooled wall vibrate, and ash attached to the cylinder water-cooled wall is vibrated off, so that the thermal resistance between the cylinder water-cooled wall and the synthesis gas is reduced, and a better heat transfer effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of coal gasification technology, and in particular to a water-cooled wall assembly for a radiant waste boiler, a radiant waste boiler, and a control method for rapping and removing ash from the radiant waste boiler. Background Technology

[0002] Entrained flow gasification (EFG) technology has become a key technology for coal resource utilization due to its high efficiency and environmental friendliness. During EPG, raw coal generates high-temperature syngas, producing fly ash and slag, and releasing a large amount of heat. Therefore, EPG technology typically incorporates a waste heat boiler process and a combined waste heat boiler-ultracooler process. This allows the high-temperature syngas to carry the fly ash and slag into the radiant waste heat boiler, while the water-cooled pipes of the boiler absorb the heat from the syngas, cooling it and ultimately improving the efficiency of the gasification system.

[0003] The radiant waste boiler includes water-cooled walls formed by water-cooled pipes. When the syngas produced in the gasifier enters the radiant waste boiler, it carries solid particles such as fly ash and slag. As it flows through the water-cooled pipes, an ash layer forms on the pipe surface. This ash layer creates significant thermal resistance, greatly reducing the radiant waste boiler's ability to absorb heat through the water-cooled pipes. This results in a decrease in the overall efficiency of the gasification system. Furthermore, the ash adhering to the water-cooled pipes may corrode the pipe surface, reducing the service life of the radiant waste boiler. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects in the prior art where the deposition of ash and slag layer on the surface of the radiant waste boiler leads to a decrease in the efficiency of the gasification system and affects the service life of the radiant waste boiler. The present invention provides a water-cooled wall assembly for a radiant waste boiler, a radiant waste boiler, and a control method for rapping and removing ash from the radiant waste boiler.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] In a first aspect, the present invention provides a water-cooled wall assembly for a radiant waste boiler, comprising a cylindrical water-cooled wall and a rapping ash removal device. The inner side of the cylindrical water-cooled wall forms a syngas channel extending along a first direction. Multiple rapping ash removal devices are installed on the outer side of the cylindrical water-cooled wall and spaced apart circumferentially along the cylindrical water-cooled wall. Each rapping ash removal device includes a mounting base, a rapping element, and a driving assembly. The mounting base is connected to the cylindrical water-cooled wall. The rapping element and the driving assembly are both disposed on the mounting base. The rapping element can be moved relative to the mounting base by the driving assembly, so that the rapping element can move towards the cylindrical water-cooled wall to impact the mounting base, causing the mounting base and the cylindrical water-cooled wall to vibrate.

[0007] The water-cooled wall assembly for a radiant waste boiler provided by this invention involves arranging multiple rapping ash removal devices at intervals on the circumferential outer side of the cylindrical water-cooled wall. Each rapping ash removal device specifically includes a mounting base, a rapping element, and a driving assembly. The rapping element and the driving assembly are mounted on the cylindrical water-cooled wall via the mounting base. The rapping rod is movable relative to the mounting base by the driving assembly, allowing the rapping element to move towards the cylindrical water-cooled wall and impact the mounting base, causing vibration of both the mounting base and the cylindrical water-cooled wall. This allows the ash adhering to the inner surface of the cylindrical water-cooled wall to be shaken off, thus reducing the thermal resistance between the cylindrical water-cooled wall and the syngas to a certain extent. This results in better heat transfer between the syngas and the cylindrical water-cooled wall, enabling the radiant waste boiler to absorb more heat from the syngas, thereby ensuring the overall heat utilization efficiency of the coal gasification system.

[0008] Preferably, the rapping dust removal device further includes a mounting shell, which is connected to the mounting base. The driving assembly and the rapping element are both disposed within the mounting shell. The mounting shell has a rapping port at a position facing the mounting base. One end of the rapping element is disposed corresponding to the rapping port along a second direction. Furthermore, the rapping element and the mounting shell are slidably connected along the second direction. The driving assembly can drive the rapping element to move along the second direction toward the rapping port.

[0009] This configuration provides a structural basis for the movement of the rapping component relative to the mounting base through the mounting shell, enabling it to move and impact the mounting base via a sliding connection with the mounting shell. Furthermore, the mounting shell also integrates the rapping component and drive assembly, making it easier and faster to connect and fix the rapping ash removal device to the mounting base. This improves the overall structural layout and integration effect of the water-cooled wall assembly, and increases the assembly speed of the water-cooled wall assembly and the radiant waste boiler.

[0010] Preferably, the driving assembly includes an electromagnetic coil, an iron core, and a magnetic induction element. The magnetic induction element is located at the other end of the rapping member opposite to the rapping opening, and the magnetic induction element is made of a ferromagnetic material. The iron core is disposed inside a mounting housing, and the electromagnetic coil is wound around the outer circumferential surface of the iron core. The iron core and the electromagnetic coil are disposed facing the other end of the rapping member.

[0011] This design allows for the driving of the rapping element simply by energizing the electromagnetic coil, simplifying operation and facilitating unified control of all rapping dust removal devices. Furthermore, the magnitude of the magnetic force can be adjusted by regulating the current, further enhancing the flexibility of the rapping dust removal device.

[0012] Preferably, a first mounting portion is provided inside the mounting housing, the first mounting portion is connected to the inner wall of the mounting housing, and a sliding hole extending along the second direction is provided on the first mounting portion, the vibrating member is movably inserted into the sliding hole; along the second direction, an elastic member is provided between the first mounting portion and the vibrating member.

[0013] This design secures the rapping component within the mounting housing while simultaneously guiding its movement, ensuring that the rapping component remains on its own path during movement and preventing it from shifting and affecting the dust removal effect.

[0014] Preferably, the mounting housing includes a housing body and a cover plate, an opening is formed on one side of the housing body, the cover plate covers the opening, and the vibration port is formed on the cover plate; the cover plate is detachably connected to the mounting base; and / or, a buffer groove is provided on the mounting base at the position corresponding to the vibration port.

[0015] The design of the buffer groove serves two purposes. First, it allows for a thinner impact point on the rapping component, minimizing the transmission loss of the impact force. Second, the buffer groove also provides a buffer distance for the rapping component, increasing the potential energy of the impact force when it strikes the mounting base, thus improving the rapping effect.

[0016] Preferably, all the rapping ash removal devices are arranged in at least two groups along the height direction of the water-cooled cylinder wall, wherein all the rapping ash removal devices in each group are evenly distributed along the circumference of the water-cooled cylinder wall; and / or, all the rapping ash removal devices are arranged in at least two groups along the circumference of the water-cooled cylinder wall, and all the rapping ash removal devices in each group are arranged in a spiral direction from top to bottom around the axial direction of the water-cooled cylinder wall.

[0017] This configuration enables multi-height and multi-directional vibration on the outer periphery of the water-cooled wall of the cylinder, thereby further improving the rapping range and rapping effect, and thus further enhancing the ash removal capacity of the rapping ash removal device.

[0018] Preferably, a plurality of finned water-cooled walls are further provided on the radial inner surface of the cylindrical water-cooled wall. The plurality of finned water-cooled walls are arranged at intervals along the circumference of the cylindrical water-cooled wall. Each finned water-cooled wall extends along the radial direction and / or the first direction of the cylindrical water-cooled wall. Furthermore, each rapping dust removal device is respectively arranged in a radial direction corresponding to one of the finned water-cooled walls along the cylindrical water-cooled wall.

[0019] This configuration increases the heat exchange area between the water-cooled wall assembly and the high-temperature syngas inside the syngas channel, as well as the volume of cooling water that simultaneously exchanges heat within the water-cooled wall assembly, thereby further improving the heat recovery capacity and efficiency of the water-cooled wall assembly. Each of the aforementioned rapping ash removal devices is radially aligned with one of the finned water-cooled walls along the cylindrical water-cooled wall, allowing the rapping ash removal devices to target the finned water-cooled walls more effectively, resulting in a stronger rapping effect and thus a better ash removal result.

[0020] Secondly, the present invention also provides a radiation waste pot, which includes the water-cooled wall assembly as described above; the radiation waste pot further includes a rapping control system, the rapping control system including a control module, the control module being electrically connected to the drive assembly to control the drive assembly to drive the rapping element to move relative to the mounting base.

[0021] The radiant waste boiler described in this invention has the same beneficial effects as the water-cooled wall assembly described above, and will not be repeated here.

[0022] Preferably, the rapping control system further includes a steam production detection module, which is located at the outlet of the cooling water channel of the water-cooled wall assembly to detect the steam production of the radiant waste boiler. The rapping control system also includes a processing module and an adjustment module that are electrically connected to each other. The steam production detection module can be electrically connected to the processing module to transmit a steam production signal to the processing module and to enable the processing module to output adjustment commands to the adjustment module. The adjustment module is electrically connected to the control module so that the adjustment module can adjust the drive rate of the drive assembly by the control module according to the adjustment commands.

[0023] Thirdly, the present invention also provides a control method for rapping and ash removal of a radiant waste boiler, which is used in the aforementioned radiant waste boiler. The control method specifically includes the following steps:

[0024] The control module drives the drive assembly of the first rapping dust removal device, causing the rapping component of the first rapping dust removal device to move and impact the mounting base, and then stops driving the first rapping dust removal device after the impact.

[0025] After the set interval time is stopped, the next rapping dust removal device is driven to impact the mounting base, and the drive of the next rapping dust removal device is stopped after the impact. The next rapping dust removal device and the first rapping dust removal device are arranged adjacent to each other along the layout direction of all the rapping dust removal devices.

[0026] Repeat the previous step until all the rapping dust removal devices have undergone the impact operation.

[0027] Preferably, before the step of energizing the first vibrating dust removal device via the control module, causing the vibrating element of the first vibrating dust removal device to impact the mounting base, and then de-energizing the first vibrating dust removal device after the impact, the method further includes:

[0028] The actual steam output of the radiant waste boiler is detected by the steam output detection module to generate a steam output signal, which is then transmitted to the processing module.

[0029] The processing module generates the actual steam output based on the steam output signal and compares the actual steam output with a set steam output reduction threshold.

[0030] When the actual steam output is lower than the set steam output reduction threshold, the control module increases the driving rate of the drive component. When the actual steam output reaches the set steam output, the control module decreases the driving rate of the drive component or stops the control module from driving the drive component.

[0031] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of a water-cooled wall assembly provided in an embodiment of the present invention.

[0033] Figure 2 This is a cross-sectional schematic diagram of the water-cooled wall assembly provided in an embodiment of the present invention along the horizontal direction.

[0034] Figure 3 This is a cross-sectional view of a water-cooled wall assembly provided in an embodiment of the present invention.

[0035] Figure 4 for Figure 3 A partial structural diagram of part A in the middle.

[0036] Figure 5 This is a schematic diagram of the internal structure of the rapping dust removal device for the water-cooled wall assembly provided in an embodiment of the present invention.

[0037] Figure 6 This is a schematic flowchart of a control method for rapping and removing ash from a radiant waste boiler, provided in an embodiment of the present invention.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Water-cooled wall assembly; 10. Syngas passage; 101. Syngas inlet; 102. Syngas outlet;

[0040] 11. Water-cooled wall of the cylinder; 110. First cooling water channel; 111. First water-cooled pipe;

[0041] 12. Vibrating dust removal device; 121. Mounting base; 1211. Buffer groove; 122. Vibrating component; 123. Drive assembly; 1231. Electromagnetic coil; 1232. Iron core; 1233. Magnetic induction component; 124. Mounting shell; 1241. Shell body; 1242. Cover plate; 1240. Vibrating port; 125. First mounting part; 126. Second mounting part; 127. Junction box; 128. Abutment part;

[0042] 13. Finned water-cooled wall; 131. Second water-cooled tube;

[0043] 14. Fasteners;

[0044] 15. Elastic components;

[0045] a) First direction; b) Second direction. Detailed Implementation

[0046] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0047] As mentioned in the background section, fluidized bed coal gasification technology has become a key technology for coal resource utilization due to its high efficiency and environmental cleanliness. During the fluidized bed coal gasification process, raw coal generates fly ash and slag while producing high-temperature syngas, releasing a large amount of heat. Therefore, fluidized bed coal gasification technology typically incorporates a waste heat boiler process and a waste heat boiler-ultracooler combined process. This allows the high-temperature syngas to carry the fly ash and slag into the radiant waste heat boiler, where the water-cooled pipes absorb the heat from the syngas, cooling it and effectively recovering the heat from the high-temperature syngas. Ultimately, this improves the efficiency of the gasification system to a certain extent.

[0048] In related technologies, radiant waste boilers typically include water-cooled walls formed by water-cooled pipes. When the syngas produced in the gasifier enters the radiant waste boiler, it carries solid particles such as fly ash and slag. These solid particles adhere to the surface of the water-cooled pipes, forming an ash layer. This ash layer creates significant thermal resistance, greatly reducing the radiant waste boiler's ability to absorb heat through the water-cooled pipes. This leads to a decrease in the overall efficiency of the gasification system. Furthermore, the ash adhering to the water-cooled pipes may corrode the pipe surface, reducing the service life of the radiant waste boiler.

[0049] Based on the above, the applicant of this invention has proposed a technical solution in the embodiments of this application. Specifically, by designing a water-cooled wall assembly for a radiant waste boiler, ash is removed from the water-cooled wall by means of vibration ash removal, thereby ensuring that there is not too much ash residue adhering to the water-cooled wall, thus ensuring the heat recovery efficiency of the radiant waste boiler.

[0050] The above is the core idea of ​​this invention. The technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0051] like Figures 1-6 As shown, an embodiment of the present invention provides a water-cooled wall assembly 1 for a radiant waste boiler, which includes a cylindrical water-cooled wall 11. A synthesis gas channel 10 is formed on the inner side of the cylindrical water-cooled wall 11 and is arranged through a first direction a. A plurality of first cooling water channels 110 are also formed inside the cylindrical water-cooled wall 11.

[0052] The cylindrical water-cooled wall 11 is composed of a plurality of first water-cooled pipes 111 extending at least partially along a first direction a. Specifically, the plurality of first water-cooled pipes 111 are arranged sequentially along a circumferential direction to form a cylindrical structure. For example, adjacent first water-cooled pipes 111 can be arranged close together or spaced apart; this embodiment illustrates this by assuming all first water-cooled pipes 111 are arranged sequentially close together along the aforementioned circumferential direction. Therefore, the axis of this circumferential direction is the axis of the cylindrical water-cooled wall 11, which is also the aforementioned first direction a, as detailed in [reference needed]. Figure 2 As shown in the figure. Of course, in other embodiments, the water-cooled wall 11 of the cylinder may also be formed through other structures, such as a cylinder structure with a hollow interlayer cavity.

[0053] Furthermore, since the cylindrical water-cooled wall 11 is formed by a number of first water-cooled pipes 111, a first cooling water channel 110 can be formed through the internal cavity of each first water-cooled pipe 111. That is, the number of channels corresponding to the first water-cooled pipes 111 are formed along the circumference of the cylindrical water-cooled wall 11. This structural form can form a uniform distribution of cooling water, so that the cylindrical water-cooled wall 11 can perform a good heat exchange effect at any position in the circumference.

[0054] In practice, cooling water flows through the first cooling water channels 110 formed in each of the first water-cooling pipes 111. Since the inner side of the cylinder water-cooling wall 11 is the synthesis gas channel 10, the synthesis gas will flow through the inner side of the cylinder water-cooling wall 11, that is, through each of the first water-cooling pipes 111. In this way, the cooling water flowing in the first water-cooling pipes 111 can exchange heat with the synthesis gas through the pipe wall of the first water-cooling pipes 111, so that the cooling water absorbs the high temperature heat of the synthesis gas and generates high temperature and high pressure steam.

[0055] Furthermore, the water-cooled wall assembly 1 also includes a rapping dust removal device 12, which includes a mounting base 121, a rapping element 122, and a drive assembly 123. The mounting base 121 is used to connect with the cylindrical water-cooled wall 11. The rapping element 122 and the drive assembly 123 are both disposed on the mounting base 121. The rapping element 122 can be moved relative to the mounting base 121 by the drive of the drive assembly 123, so that the rapping element 122 can move toward the cylindrical water-cooled wall 11 to impact the mounting base 121 and cause the mounting base 121 and the cylindrical water-cooled wall 11 to vibrate.

[0056] In practice, when a certain amount of ash and slag adheres to the water-cooled wall 11 and needs to be cleaned, the drive assembly 123 drives the vibrator 122 to impact the mounting base 121. The mounting base 121 and the water-cooled wall 11 will vibrate due to the impact, thus dislodging the ash and slag adhering to the water-cooled wall 11. This achieves a certain degree of ash removal and avoids excessively low heat exchange efficiency between the water-cooled wall assembly 1 and the syngas due to an excessively thick ash and slag layer. In addition, the impact method can generate a large vibration range for the water-cooled wall 11. That is to say, under one impact, the ash and slag within a vibration range of the water-cooled wall 11 can be dislodged to a certain extent simultaneously. Thus, compared with manual ash removal or soot blowing, the ash removal effect is better and the ash removal efficiency is also higher.

[0057] Based on the above, such as Figures 1-3 As shown, the water-cooled wall assembly 1 provided in this embodiment of the invention is equipped with multiple rapping dust removal devices 12. These devices are all installed on the outer side of the cylindrical water-cooled wall 11 and are spaced apart along the circumference of the cylindrical water-cooled wall 11. This arrangement enables impact dust removal at all points along the circumference of the cylindrical water-cooled wall 11, thereby further improving the dust removal effect and efficiency of the water-cooled wall assembly 1.

[0058] In summary, the water-cooled wall assembly 1 for a radiant waste boiler provided in this embodiment of the invention, by arranging multiple vibrating ash removal devices 12 at intervals on the circumferential outer side of the cylindrical water-cooled wall 11, makes each vibrating ash removal device 12 specifically include a mounting base 121, a vibrating element 122, and a driving assembly 123. The vibrating element 122 and the driving assembly 123 are mounted on the cylindrical water-cooled wall 11 via the mounting base 121, and the vibrating rod can be moved relative to the mounting base 121 by the driving of the driving assembly 123, so that the vibrating element... 122 can move toward the water-cooled wall 11 of the cylinder until it collides with the mounting base 121, causing the mounting base 121 and the water-cooled wall 11 of the cylinder to vibrate. In this way, the ash and slag attached to the inner side of the water-cooled wall 11 of the cylinder can be shaken off, thus reducing the thermal resistance between the water-cooled wall 11 of the cylinder and the syngas to a certain extent, and making the heat transfer effect between the syngas and the water-cooled wall 11 of the cylinder better. The radiant waste boiler can absorb more heat from the syngas, thereby ensuring the overall heat utilization efficiency of the coal gasification system.

[0059] Furthermore, regarding the connection method between the mounting base 121 of the rapping ash removal device 12 and the water-cooled wall 11 of the cylinder, in some embodiments, the mounting base 121 can be fixedly connected to the water-cooled wall 11 of the cylinder to ensure that the generated vibration will not weaken the connection stability between the rapping ash removal device 12 and the water-cooled wall 11 of the cylinder.

[0060] For example, the two can be fixedly connected by welding, that is, the side of the mounting base 121 facing the water-cooled wall 11 of the cylinder can be welded and fixed to the outer peripheral surface of the water-cooled wall 11 of the cylinder, so that the vibration transmission and synchronization can be guaranteed while ensuring the fixing effect. In addition, in order to reduce stress concentration on the mounting base 121 and disperse the impact load of the rapping dust removal device 12, the corners of the mounting base 121 can be designed with rounded corners to avoid stress concentration and ensure that the rapping load can be stably transmitted to the water-cooled wall 11 of the cylinder.

[0061] When multiple rapping ash removal devices 12 are arranged on the water-cooled wall 11 of the cylinder, in some embodiments, all rapping ash removal devices 12 can be arranged in at least two groups along the height direction of the water-cooled wall 11, wherein all rapping ash removal devices 12 in each group are evenly distributed along the circumference of the water-cooled wall 11. This arrangement enables multi-height and multi-directional vibration on the outer periphery of the water-cooled wall 11, thereby further improving the rapping range and rapping effect, and thus further enhancing the ash removal capacity of the rapping ash removal devices 12.

[0062] As shown in the figure, in this embodiment, the example is taken where seven groups of all the rapping ash removal devices 12 are arranged along the height direction of the water-cooled wall 11 of the cylinder. Figure 1As can be seen, along the height direction of the water-cooled wall 11 of the cylinder, a group of rapping ash removal devices 12 located at a higher position are evenly distributed along the axial direction of the water-cooled wall 11 of the cylinder. In this way, along the circumference of the water-cooled wall 11 of the cylinder, multiple rapping ash removal devices 12 can rap the water-cooled wall 11 of the cylinder from different positions.

[0063] In practice, the rapping range of multiple rapping ash removal devices 12 can achieve full coverage along the circumference of the water-cooled wall 11 of the cylinder. That is to say, the rapping range of two adjacent rapping ash removal devices 12 can overlap to a certain extent. This ensures that there are no places on the water-cooled wall 11 that will not be rapped, so that the rapping ash removal devices 12 can achieve the ash removal effect on all positions on the inner side of the water-cooled wall 11.

[0064] For example, the rapping ash removal device 12 can be selectively arranged at heights of 4m, 6m, 8m, 12m, 16m, and 20m from the inlet of the top syngas channel 10 along the first direction a of the water-cooled wall 11 of the cylinder. Furthermore, a group of rapping ash removal devices 12 arranged at each height position is evenly distributed along the circumference of the water-cooled wall 11 of the cylinder.

[0065] In other embodiments, the multiple rapping dust removal devices 12 can be arranged in other ways. For example, all the rapping dust removal devices 12 can be arranged in at least two groups along the circumference of the water-cooled wall 11 of the cylinder, and all the rapping dust removal devices 12 in each group can be arranged in a spiral direction from top to bottom around the axial direction of the water-cooled wall 11 of the cylinder. This arrangement can also improve the rapping range and rapping effect.

[0066] like Figure 3 and Figure 4 As shown, in some embodiments, a plurality of finned water-cooled walls 13 are further provided on the radially inner side of the cylindrical water-cooled wall 11, and the plurality of finned water-cooled walls 13 are arranged at intervals along the circumference of the cylindrical water-cooled wall 11. Each finned water-cooled wall 13 extends along the radial direction and / or the first direction a of the cylindrical water-cooled wall 11, and a plurality of second cooling water channels are formed inside each finned water-cooled wall 13.

[0067] A finned water-cooled wall 13 is provided on the radial inner side of the cylinder water-cooled wall 11, that is, the finned water-cooled wall 13 is located inside the synthesis gas channel 10. This can increase the heat exchange area between the water-cooled wall assembly 1 and the high-temperature synthesis gas inside the synthesis gas channel 10, as well as the volume of cooling water that exchanges heat synchronously inside the water-cooled wall assembly 1, thereby further improving the heat recovery capacity and efficiency of the water-cooled wall assembly 1.

[0068] For example, such as Figure 3 and Figure 4As shown, the finned water-cooled wall 13 is formed by a connecting plate and multiple parallel and sequentially connected second water-cooled pipes 131. The second water-cooled pipes 131 can extend along the first direction a, just like the first water-cooled pipes 111, and all the second water-cooled pipes 131 are arranged in a radially close manner along the cylindrical water-cooled wall 11. Furthermore, the multiple finned water-cooled walls 13 can be evenly distributed along the circumference of the cylindrical water-cooled wall 11 to achieve uniform heat exchange at the multiple finned water-cooled walls 13.

[0069] Based on the above, each rapping ash removal device 12 is respectively arranged radially to a finned water-cooled wall 13 along the water-cooled wall 11 of the cylinder. This arrangement allows the rapping ash removal device 12 to rap the finned water-cooled wall 13 more targeted, thereby making the finned water-cooled wall 13 more strongly subjected to the rapping action, and thus achieving a better ash removal effect.

[0070] In one specific implementation, 4-16 finned water-cooled walls 13 can be arranged along the circumference of the cylindrical water-cooled wall 11, and correspondingly, the number of a group of rapping dust removal devices 12 located at the same height is also 4-16. In practice, it is not necessary for each finned water-cooled wall 13 to correspond to a rapping dust removal device 12. As long as the external rapping dust removal devices 12 are evenly distributed along the circumference of the cylindrical water-cooled wall 11, it can be ensured to a certain extent that each finned water-cooled wall 13 can be subjected to vibration. For example, this embodiment uses 16 finned water-cooled walls 13 and 8 rapping dust removal devices 12 for illustration. Of course, in other embodiments, the number of finned water-cooled walls 13 and rapping dust removal devices 12 can also be set to other numbers besides 4-16, as long as the effect of expanding the heat exchange area or ensuring the comprehensiveness of the rapping range is achieved.

[0071] For the detailed structural design of the rapping dust removal device 12, such as Figure 5 As shown, in some embodiments, the rapping dust removal device 12 further includes a mounting shell 124, which is connected to the mounting base 121, and the drive assembly 123 and the rapping element 122 are both disposed inside the mounting shell 124.

[0072] Specifically, the mounting housing 124 can be connected to the mounting base 121 on one side, for example, by a detachable connection, to facilitate disassembly in case of a malfunction of the rapping dust removal device 12. For example, the mounting housing 124 may further include a housing body 1241 and a cover plate 1242, wherein an opening is formed on one side of the housing body 1241, and the cover plate 1242 is opened at the opening.

[0073] When the mounting shell 124 is connected to the mounting base 121, the cover plate 1242 can be connected to the mounting base 121. For example, the cover plate 1242 and the mounting base 121 are attached to each other, and corresponding connection holes are provided on the cover plate 1242 and the mounting base 121. Fasteners 14 are inserted into the connection holes to achieve the connection and fixation between the cover plate 1242 and the mounting base 121, that is, between the mounting shell 124 and the mounting base 121.

[0074] Based on the above, the mounting shell 124 is provided with a vibration port 1240 at the position facing the mounting base 121. One end of the vibration member 122 is correspondingly arranged with the vibration port 1240 along the second direction b. Furthermore, the vibration member 122 and the mounting shell 124 are slidably connected along the second direction b. The driving assembly 123 can drive the vibration member 122 to move along the second direction b toward the vibration port 1240.

[0075] Since the drive assembly 123 can drive the vibrating member 122 to move along the second direction b relative to the mounting shell 124 towards the vibrating port 1240, one end of the vibrating member 122 can move towards the vibrating port 1240 and extend out from the vibrating port 1240. Furthermore, since the vibrating port 1240 is located on the mounting shell 124 towards the mounting base 121, one end of the vibrating member 122, after extending from the vibrating port 1240, can impact the mounting base 121, thereby transmitting the impact force to the water-cooled wall 11 of the cylinder connected to the mounting base 121, thus achieving the function of vibrating and removing ash. For example, the vibrating member 122 can adopt a rod-shaped structure to make its movement process easier to maintain stability.

[0076] Based on this, the mounting shell 124 not only provides a structural basis for the movement of the rapping component 122 relative to the mounting base 121, enabling it to move and impact relative to the mounting base 121 through a sliding connection with the mounting shell 124, but also integrates the rapping component 122 and the drive assembly 123, making it easier and faster to connect and fix the rapping ash removal device 12 to the mounting base 121, improving the overall structural layout and integration effect of the water-cooled wall assembly 1, and increasing the assembly speed of the water-cooled wall assembly 1 and the radiant waste boiler.

[0077] For example, the second direction b can be a radial direction of the water-cooled wall 11. That is, the rapping member 122 moves radially along the water-cooled wall 11, and the force of its impact on the water-cooled wall 11 is perpendicular to the surface of the water-cooled wall 11, thereby maximizing the rapping range and thus improving the dust removal effect.

[0078] When the mounting housing 124 includes a housing body 1241 and a cover plate 1242, the rapping opening 1240 can be specifically formed on the cover plate 1242. Furthermore, in some embodiments, a buffer groove 1211 can be provided at the position corresponding to the rapping opening 1240 on the mounting base 121. The design of the buffer groove 1211, on the one hand, can reduce the rapping position of the rapping member 122, thereby minimizing the transmission loss of the impact force. On the other hand, the buffer groove 1211 also further provides a buffer distance for the rapping member 122, allowing the potential energy of the force exerted by the rapping member 122 upon impact with the mounting base 121 to be greater, thus improving the rapping effect.

[0079] In one specific implementation of the drive assembly 123 of the rapping dust removal device 12, the drive assembly 123 may include an electromagnetic coil 1231, an iron core 1232, and a magnetic induction element 1233. The magnetic induction element 1233 is located at the other end of the rapping member 122 facing away from the rapping opening 1240, and the magnetic induction element 1233 is made of ferromagnetic material. The iron core 1232 is located inside the mounting shell 124, and the electromagnetic coil 1231 is wound around the outer peripheral surface of the iron core 1232. The iron core 1232 and the electromagnetic coil 1231 are arranged facing the other end of the rapping member 122.

[0080] Please see details. Figure 5 As shown, the electromagnetic coil 1231 is wound around the iron core 1232. When energized, the electromagnetic coil 1231 and the iron core 1232 form an electromagnet structure, generating a magnetic field within the mounting housing 124. Since the magnetic induction element 1233 is made of ferromagnetic material, the magnetic field generated within the mounting housing 124 exerts a magnetic force on the magnetic induction element 1233, causing it to move under the influence of this force. The magnetic induction element 1233 then synchronously drives the vibrating element 122 to move.

[0081] Thus, the rapping element 122 can be driven simply by energizing the electromagnetic coil 1231, which not only facilitates operation but also allows for unified control of all rapping dust removal devices 12. Furthermore, the magnitude of the magnetic force can be adjusted by regulating the current, further enhancing the flexibility of the rapping dust removal device 12.

[0082] In a specific implementation, the magnetic induction element 1233 can be configured as a plate-like structure to match the end face of the iron core 1232. Furthermore, the iron core 1232 and the vibrating element 122 are coaxially arranged, thus subjecting the vibrating element 122 to an axial magnetic force, which facilitates smoother movement of the vibrating element 122. In addition, in some embodiments, both the magnetic induction element 1233 and the vibrating element 122 can be made entirely of ferromagnetic material, thereby achieving a better response to magnetic forces.

[0083] Furthermore, to ensure smooth movement of the rapping element 122 relative to the rapping port 1240, in some embodiments, a first mounting portion 125 can be provided inside the mounting housing 124. The first mounting portion 125 is connected to the inner wall of the mounting housing 124, and a sliding hole extending along the second direction b is provided on the first mounting portion 125, through which the rapping element 122 can be movably inserted. This arrangement, on the one hand, fixes the rapping element 122 within the mounting housing 124, and on the other hand, guides the movement of the rapping element 122, ensuring that the path of the rapping element 122 remains unchanged during movement and preventing the rapping element 122 from shifting and affecting the dust removal effect.

[0084] In order to fix the iron core 1232 and the electromagnetic coil 1231, a second mounting part 126 can be provided inside the mounting housing 124. The second mounting part 126 is also connected to the inner wall of the mounting housing 124 to fix the iron core 1232 and the electromagnetic coil 1231 near the other end of the vibrating member 122.

[0085] Furthermore, such as Figure 5 As shown, a junction box 127 is also provided on the mounting shell 124 of the rapping ash removal device 12. The junction box 127 is located at the position corresponding to the iron core 1232 and the electromagnetic coil 1231 on the mounting shell 124 to facilitate electrical connection with the internal electromagnetic coil 1231. By providing the junction box 127, it is possible to easily connect the electromagnetic coil 1231 with other components of the radiant waste boiler (such as the power supply and control system).

[0086] like Figure 5 As shown, in some embodiments, along the second direction b, an elastic element 15 is further provided between the first mounting portion 125 and the rapping element 122. The elastic element 15 can provide elastic restoring force to the rapping element 122. That is, when the rapping element 122 is in the initial position, the elastic element 15 exerts no force on the rapping element 122. However, when the electromagnetic coil 1231 is energized, the rapping element 122 is moved by the magnetic force. The elastic element 15 is stretched or compressed due to the movement of the rapping element 122, generating elastic potential energy, which can provide elastic restoring force to the rapping element 122. When the electromagnetic coil 1231 is de-energized, the rapping element 122 can move back to the initial position through this elastic restoring force to prepare for the next movement. This arrangement enables repeated impact of the rapping element 122 on the mounting base 121, thereby further improving the dust removal effect of the rapping dust removal device 12.

[0087] In this embodiment, the elastic element 15 can be a spring. Specifically, the spring is sleeved on the vibrating element 122, and the vibrating element 122 is provided with an abutment portion 128. The two ends of the spring can abut against the first mounting portion 125 and the abutment portion 128 respectively.

[0088] It should be noted that the transmission achieved by electromagnetic action in this embodiment of the invention is a non-contact transmission. Of course, in other embodiments, the drive component 123 can also be designed by a contact transmission method, such as using the transmission rod of the drive motor to directly connect the vibrating rod or other similar linkage structure to achieve the driving movement of the vibrating component 122.

[0089] In addition to the water-cooled wall assembly 1 described above, this embodiment of the invention also provides a radiation waste cooker, which includes the water-cooled wall assembly 1 described above.

[0090] Please see details. Figure 1 and Figure 3 As shown, the cylindrical water-cooled wall 11 of the water-cooled wall assembly 1 has a syngas inlet 101 formed at the top in the first direction a, i.e., the through-hole of the syngas channel 10 at the top of the cylindrical water-cooled wall 11. Correspondingly, the cylindrical water-cooled wall 11 has a syngas outlet 102 and an ash discharge outlet formed at the bottom in the first direction a. For example, the syngas outlet 102 and the ash discharge outlet can be integrated into a common opening.

[0091] Furthermore, the radiation waste pot also includes a rapping control system, which includes a control module electrically connected to the drive assembly 123 to drive the rapping element 122 to move relative to the mounting base 121.

[0092] The control module is used to control the rapping frequency of the rapping dust removal device 12. For example, it can make all the rapping dust removal devices 12 perform a rapping operation once every 10 minutes. In this operation mode, the control module can energize the electromagnetic coil 1231 once every 10 minutes to generate a magnetic field inside the mounting shell 124, thereby driving the rapping component 122 to move and impact the mounting base 121.

[0093] Therefore, as Figure 6 As shown, for the aforementioned radiant waste cooker, this embodiment of the invention also provides a control method for rapping and ash removal of the radiant waste cooker, which is used on the aforementioned radiant waste cooker. This control method for rapping and ash removal of the radiant waste cooker specifically includes the following steps:

[0094] The control module powers on all the rapping dust removal devices 12, causing the rapping components 122 of all the rapping dust removal devices 12 to impact the mounting base 121.

[0095] After the impact is completed, power is cut off to all rapping and dust removal devices 12.

[0096] After the total power outage time is set, continue repeating the above steps.

[0097] The total set time is the 10 minutes mentioned in the example above. However, the total set time in this embodiment of the invention is not limited to being set to only 10 minutes. It can be set to any duration between 5 and 30 minutes. In other possible implementations, the total set time can also be set to a duration other than 5 to 30 minutes.

[0098] In addition, since multiple rapping ash removal devices 12 are provided on the water-cooled wall 11 of the cylinder, when controlling all the rapping ash removal devices 12 to perform rapping operations, all the rapping ash removal devices 12 can be rapped sequentially.

[0099] For example, for a group of rapping ash removal devices 12 at the same height, all rapping ash removal devices 12 can be rapping sequentially in a clockwise or counterclockwise direction, thereby preventing structural damage to the radiant waste boiler that may be caused by overlapping vibrations. In specific implementation, the start-up time interval between adjacent rapping ash removal devices 12 can be set to 5 seconds, and after all rapping ash removal devices 12 at the same height have completed rapping, rapping at the next height segment will begin, and the rapping time interval between adjacent height segments can be set to 5-20 seconds.

[0100] Therefore, the above-mentioned control method for rapping and ash removal from radiant waste boilers can be further configured to include the following steps:

[0101] Step 104: Power on the first rapping dust removal device through the control module so that the rapping component of the first rapping dust removal device impacts the mounting base, and then power off the first rapping dust removal device after the impact.

[0102] Step 105: After the power-off set interval time, power is supplied to the next rapping dust removal device so that the next rapping dust removal device impacts the mounting base, and power is cut off to the next rapping dust removal device after the impact. The next rapping dust removal device and the first rapping dust removal device are arranged adjacent to each other along the layout direction of all rapping dust removal devices.

[0103] Step 106: Repeat the previous step until all the rapping dust removal devices have performed the impact operation.

[0104] The set interval time is the 5-second time mentioned in the example above. Of course, the length of this time is not limited to 5 seconds and can be flexibly adjusted according to the actual situation. For example, it can be set to 2-10 seconds, or other durations outside of 2-10 seconds.

[0105] In some embodiments, the rapping control system of the radiant waste boiler further includes a processing module, which is electrically connected to the control module. The processing module is used to set the start-up sequence, rapping interval, and operating cycle of all rapping ash removal devices 12, so as to control the operation of all rapping ash removal devices 12 through the control module.

[0106] Furthermore, the rapping control system also includes a steam production detection module, a processing module, and a regulating module. The steam production detection module is located at the outlet of the cooling water channel to detect the steam production of the radiant waste boiler. The processing module and the regulating module are electrically connected. The steam production detection module can be electrically connected to the processing module to transmit steam production signals to the processing module and cause the processing module to output regulating commands to the regulating module. The regulating module is electrically connected to the control module so that the regulating module adjusts the drive rate of the drive component 123 by the control module according to the regulating commands.

[0107] In specific implementation, according to the above settings, the following steps may be included before step 104 of the control method for rapping and removing ash from the radiant waste boiler:

[0108] Step 101: Detect the actual steam output of the radiant waste boiler through the steam output detection module to generate a steam output signal and transmit the steam output signal to the processing module.

[0109] Step 102: The processing module generates the actual steam output based on the steam output signal and compares the actual steam output with the set steam output reduction threshold.

[0110] Step 103: When the actual steam output is lower than the set steam output reduction threshold, the control module increases the driving speed of the drive component by adjusting the module; and when the actual steam output reaches the set steam output, the control module decreases the driving speed of the drive component by adjusting the module or stops the control module from driving the drive component.

[0111] This setup allows the rapping operation to be activated only when steam production is significantly affected, thereby reducing the overall energy consumption of the radiant waste boiler and mitigating structural fatigue.

[0112] By adopting the radiant waste boiler and the control method for rapping and ash removal provided in the embodiments of the present invention, after three months of actual operation of the radiant waste boiler, the ash thickness on the surface of the water-cooled wall 11 of the cylinder can be reduced by more than 50%, and the steam output can be maintained at more than 80% of the initial design value.

[0113] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A water-cooled wall assembly for a radiant waste boiler, characterized in that, include: The cylindrical water-cooled wall has a synthesis gas channel formed on its inner side along a first direction. A rapping ash removal device, wherein there are multiple rapping ash removal devices, all of which are installed on the outside of the water-cooled wall of the cylinder and are arranged at intervals along the circumference of the water-cooled wall of the cylinder. The rapping dust removal device includes a mounting base, a rapping component, and a driving assembly. The mounting base is connected to the water-cooled wall of the cylinder. The rapping component and the driving assembly are both mounted on the mounting base. The rapping component can be moved relative to the mounting base by the driving assembly, so that the rapping component can move towards the water-cooled wall of the cylinder to impact the mounting base and cause the mounting base and the water-cooled wall of the cylinder to vibrate.

2. The water-cooled wall assembly as described in claim 1, characterized in that, The rapping dust removal device also includes a mounting shell, which is connected to the mounting base, and the drive assembly and the rapping component are both disposed inside the mounting shell; The mounting housing has a vibration port facing the mounting base. One end of the vibration member is positioned in a second direction corresponding to the vibration port. The vibration member and the mounting housing are slidably connected in the second direction. The driving assembly can drive the vibration member to move in the second direction toward the vibration port.

3. The water-cooled wall assembly as described in claim 2, characterized in that, The drive assembly includes an electromagnetic coil, an iron core, and a magnetic induction element. The magnetic induction element is located at the other end of the vibrating element opposite to the vibrating opening, and the magnetic induction element is made of a ferromagnetic material. The iron core is disposed inside the mounting housing, the electromagnetic coil is wound around the outer circumferential surface of the iron core, and the iron core and the electromagnetic coil are disposed towards the other end of the vibrating element.

4. The water-cooled wall assembly as described in claim 3, characterized in that, The mounting housing is provided with a first mounting part, which is connected to the inner wall of the mounting housing. The first mounting part is provided with a sliding hole extending along the second direction, and the vibrating element can be movably inserted into the sliding hole. Along the second direction, an elastic element is provided between the first mounting part and the vibrating member.

5. The water-cooled wall assembly as described in claim 2, characterized in that, The mounting housing includes a housing body and a cover plate. An opening is formed on one side of the housing body, and the cover plate covers the opening. The vibration port is formed on the cover plate. The cover plate is detachably connected to the mounting base; and / or, the mounting base is provided with a buffer groove at the position corresponding to the vibration port.

6. The water-cooled wall assembly as described in any one of claims 1-5, characterized in that, All the aforementioned rapping ash removal devices are arranged in at least two groups along the height direction of the water-cooled wall of the cylinder, wherein all the rapping ash removal devices in each group are evenly distributed along the circumference of the water-cooled wall of the cylinder. And / or, all of the said rapping ash removal devices are arranged in at least two groups along the circumference of the water-cooled wall of the cylinder, and all of the said rapping ash removal devices in each group are arranged in a spiral direction from top to bottom around the axial direction of the water-cooled wall of the cylinder.

7. The water-cooled wall assembly as described in any one of claims 1-5, characterized in that, The inner radial surface of the cylindrical water-cooled wall is further provided with a plurality of finned water-cooled walls, which are arranged at intervals along the circumference of the cylindrical water-cooled wall. Each of the finned water-cooled walls extends radially and / or in the first direction along the cylindrical water-cooled wall, and each of the rapping dust removal devices is respectively arranged in a radial direction corresponding to one of the finned water-cooled walls along the cylindrical water-cooled wall.

8. A radiation waste cooker, characterized in that, Includes the water-cooled wall assembly as described in any one of claims 1-7; The radiation waste pot also includes a rapping control system, which includes a control module electrically connected to the drive assembly to control the drive assembly to move the rapping element relative to the mounting base.

9. The radiation waste pot as described in claim 8, characterized in that, The rapping control system also includes a steam production detection module, which is located at the outlet of the cooling water channel of the water-cooled wall assembly to detect the steam production of the radiant waste boiler. The rapping control system also includes a processing module and an adjustment module that are electrically connected to each other. The steam production detection module can be electrically connected to the processing module to transmit a steam production signal to the processing module and enable the processing module to output an adjustment command to the adjustment module. The adjustment module and the control module are both electrically connected, so that the adjustment module adjusts the driving rate of the drive component by the control module according to the adjustment command.

10. A method for controlling the ash removal of radiant waste boilers by vibration, used in the radiant waste boiler provided in claim 8 or 9, characterized in that, The control method specifically includes the following steps: The control module drives the drive assembly of the first rapping dust removal device, causing the rapping component of the first rapping dust removal device to move and impact the mounting base, and then stops driving the first rapping dust removal device after the impact. After the set interval time is stopped, the next rapping dust removal device is driven to impact the mounting base, and the drive of the next rapping dust removal device is stopped after the impact. The next rapping dust removal device and the first rapping dust removal device are arranged adjacent to each other along the layout direction of all the rapping dust removal devices. Repeat the previous step until all the rapping dust removal devices have undergone the impact operation.

11. The method for controlling the ash removal of radiant waste boilers by vibration as described in claim 10, characterized in that, Before the step of energizing the first vibrating dust removal device through the control module, causing the vibrating element of the first vibrating dust removal device to impact the mounting base, and then de-energizing the first vibrating dust removal device after the impact, the following steps are included: The actual steam output of the radiant waste boiler is detected by the steam output detection module to generate a steam output signal, which is then transmitted to the processing module. The processing module generates the actual steam output based on the steam output signal and compares the actual steam output with a set steam output reduction threshold. When the actual steam output is lower than the set steam output reduction threshold, the control module increases the driving rate of the drive component. When the actual steam output reaches the set steam output, the control module decreases the driving rate of the drive component or stops the control module from driving the drive component.

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