A gas-solid separation device suitable for high-temperature tail gas treatment

Abstract

The application relates to the technical field of high-temperature tail gas gas-solid separation, and discloses a gas-solid separation equipment suitable for high-temperature tail gas treatment, which comprises a separation equipment cylinder and a material receiving hopper fixedly installed at the bottom of the separation equipment cylinder, and a back-blowing mechanism is fixedly installed at the gas outlet pipeline of the separation equipment cylinder, wherein the back-blowing mechanism comprises a heating mechanism, and the heating mechanism comprises a heat absorption pipeline provided with a bending part and a straight pipe part. The application is characterized in that the bending type heat absorption pipeline with spiral heat absorption fins is arranged in the gas outlet pipeline of the separation equipment, the waste heat of the high-temperature tail gas is fully recovered to preheat the back-blowing air, the temperature of the back-blowing air is kept close to the temperature of the tail gas, the problem of thermal shock cracking of the ceramic filter tube caused by the back-blowing of the low-temperature airflow is fundamentally avoided, and the problem of the heating component being thinned and locally overheated and burnt out caused by the continuous erosion of the high-speed airflow after the electric heating device is heated for a long time is avoided.

Description

Technical Field

[0001] This invention belongs to the field of high-temperature exhaust gas gas-solid separation technology, specifically relating to a gas-solid separation device suitable for high-temperature exhaust gas treatment. Background Technology

[0002] High-temperature exhaust gas treatment typically employs ceramic dust collectors. These dust collectors primarily use porous ceramic filter elements, filter tubes, or filter plates to trap dust on the outer surface and micropores of the ceramic components, while clean gas is discharged through the ceramic pores, thus completing gas-solid separation.

[0003] Pulse jet cleaning is a common cleaning method for ceramic dust collectors. However, pulse jet cleaning under high-temperature conditions presents several problems: the air used for pulse jet cleaning is usually stored in a tank or extracted directly from the surrounding environment, and its temperature is typically close to the ambient temperature. This temperature can only meet the cleaning requirements of ceramic dust collectors operating at temperatures between 200°C and 400°C. When cleaning ceramic dust collectors operating at temperatures between 400°C and 1000°C, the low-temperature compressed air is directly sprayed onto the high-temperature ceramic surface, causing localized rapid cooling of the ceramic components and inducing thermal shock cracking. Existing technology uses electric heating devices to heat the air used for cleaning. It is hot, but when the ceramic dust collector deals with high-temperature exhaust gas between 1000℃ and 1600℃, the temperature of its internal ceramic elements will also rise to between 1000℃ and 1600℃ due to absorbing the heat of the exhaust gas. At this time, the electric heating device not only needs to heat the heating element to a temperature close to that of the ceramic element, but also needs to meet the time requirements and air delivery requirements of the entire pulse jet cleaning process. After the electric heating device is heated for a long time, the heating element will quickly oxidize and the crystal phase will coarsen. With the continuous scouring of the high-speed airflow, the oxide layer formed on the surface of the heating element is easy to fall off, eventually causing the heating element to become thinner and locally overheat and burn out. Summary of the Invention

[0004] This invention provides a gas-solid separation device suitable for high-temperature exhaust gas treatment, solving the technical problem in related technologies where, after prolonged heating, the oxide layer formed on the surface of the heating element is easily detached due to the continuous scouring of high-speed airflow, ultimately leading to the heating element becoming thinner and locally overheating and burning out.

[0005] The present invention provides a gas-solid separation device suitable for high-temperature exhaust gas treatment, including a separation device cylinder and a receiving hopper fixedly installed at its bottom, and a reverse spraying mechanism is fixedly installed at the gas outlet pipe of the separation device cylinder;

[0006] The reverse jetting mechanism includes a heating mechanism, which includes a heat-absorbing pipe. The heat-absorbing pipe has a curved section and a straight section. A positioning frame is fixedly connected to the outer wall of the straight section. The positioning frame is fixedly installed on the pipe body of the gas outlet pipe of the separation equipment cylinder. Heat-absorbing fins are welded to the outer wall of the curved section of the heat-absorbing pipe, and the heat-absorbing fins are spirally arranged along the surface of the heat-absorbing pipe. The curved section of the heat-absorbing pipe is located inside the gas outlet pipe of the separation equipment cylinder, and the straight section of the heat-absorbing pipe is located outside the gas outlet pipe of the separation equipment cylinder.

[0007] In a preferred embodiment, the end of the heat absorption pipe is connected to a metering mechanism, which includes a first connecting pipe and a second connecting pipe. The first connecting pipe is located at the air inlet end of the heat absorption pipe, and the second connecting pipe is located at the air outlet end of the heat absorption pipe. Both the interior of the first connecting pipe and the interior of the second connecting pipe are provided with through holes, and a sealing plate is slidably arranged between the first connecting pipe and the second connecting pipe.

[0008] In a preferred embodiment, the sealing plate is slidably connected to one end of the first connecting pipe and has a first through hole and a second through hole. The sealing plate is slidably connected to one end of the second connecting pipe and has a third through hole and a fourth through hole. The fourth through hole is located at the end of the sealing plate and has a bent structure. One end of the fourth through hole penetrates the sealing plate.

[0009] In a preferred embodiment, a first insulation box and a second insulation box are fixedly installed on two adjacent sides of the outer wall of the separation equipment cylinder, respectively. The first insulation box is located on the side of the air outlet pipe of the separation equipment cylinder, and a thickening pipe is fixedly installed inside the second insulation box. An air pressurization component is fixedly installed inside the first insulation box, and an air supply pipe connects the air pressurization component and the thickening pipe.

[0010] In a preferred embodiment, multiple electromagnetic pulse valves are connected in parallel to the outlet end of the thickened pipe. The outlet ends of the electromagnetic pulse valves are connected to a backflush pipe, which is fixedly installed inside the separator cylinder. An installation connecting plate is fixedly installed on the inner wall of the separator cylinder. Multiple ceramic filter tubes are fixedly installed at equal intervals at the bottom of the installation connecting plate. The ceramic filter tubes are set in a vertical position and are located below the backflush pipe. A discharge valve is connected to the bottom of the receiving hopper.

[0011] In a preferred embodiment, an air intake assembly is fixedly installed on the top of the first insulation box, and a fan is installed inside the air intake assembly. A partition plate is provided between the air intake assembly and the air pressurization assembly. An electric cylinder is fixedly installed on the inner wall of the first insulation box. The electric cylinder is vertically arranged, and one end of the piston rod of the electric cylinder is fixedly connected to one side of the sealing plate.

[0012] In a preferred embodiment, a dust removal mechanism is provided on one side of each heat absorption pipe. The dust removal mechanism includes a guide rod whose shape is adapted to the heat absorption pipe. The guide rod is fixedly connected to the positioning frame. An opening is provided on the side of the guide rod facing the heat absorption pipe. A chain is provided inside the guide rod. A striking rod is provided at the node of the chain. The striking rod is located inside the opening.

[0013] In a preferred embodiment, a servo motor is fixedly installed on the inner wall of the first insulation box, and a transmission wheel is fixedly connected to the output end of the servo motor. The transmission wheel is located between the semicircular part of the guide rod and the positioning frame. The transmission wheel meshes with the chain, and a receiving groove is provided at the junction of the transmission wheel and the guide rod.

[0014] In a preferred embodiment, a connecting rod is rotatably connected at the node of the chain, and an extension rod is integrally formed in the middle section of the connecting rod, with a semi-circular end provided at the end of the extension rod.

[0015] In a preferred embodiment, positioning protrusions are provided on both sides of the semi-circular end, the striking rod is rotatably connected to the positioning protrusions, and a torsion spring is fixedly connected between the striking rod and the semi-circular end, with the torsion spring sleeved on the outer wall of the positioning protrusion.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. This invention utilizes a curved heat-absorbing pipe with spiral heat-absorbing fins installed inside the outlet pipe of the separation equipment to fully recover the waste heat of the high-temperature exhaust gas and preheat the reverse-jet air, keeping the temperature of the reverse-jet air close to that of the exhaust gas. This fundamentally avoids the problem of thermal shock cracking of ceramic filter tubes caused by low-temperature airflow. At the same time, it avoids the problem of heating components becoming thinner and locally overheating and burning out after prolonged heating of electric heating devices due to continuous scouring by high-speed airflow.

[0018] 2. This invention uses a servo motor to drive a chain to drive a striking rod to achieve flexible reciprocating striking. Combined with a torsion spring buffer protection structure, it removes dust accumulation on the surface of the heat absorption sheet and heat absorption pipe. While ensuring the efficiency of residual heat absorption, it avoids damage to the heat absorption sheet, which has decreased in strength at high temperatures, due to excessive striking force. Furthermore, the shape of the guide rod is perfectly matched with the heat absorption pipe to prevent the formation of dust removal dead zones. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of one side of the present invention.

[0020] Figure 2 This is a three-dimensional structural diagram of the other side of the present invention.

[0021] Figure 3 This is a top view of the internal structure of the separation device cylinder of the present invention.

[0022] Figure 4 This is a schematic diagram of the assembly of the reverse jet mechanism and the separation equipment cylinder of the present invention.

[0023] Figure 5 This is a schematic diagram of the planar structure of the gas outlet pipe, heat absorption pipe and heat absorption plate of the separation device of the present invention.

[0024] Figure 6 This is a top view of the heat absorption pipe, heat absorption sheet, metering mechanism, and dust removal mechanism of the present invention.

[0025] Figure 7 This is a schematic diagram of the internal planar structure of the first connecting pipe, the second connecting pipe, and the sealing plate of the present invention.

[0026] Figure 8 This is a schematic diagram illustrating the movement of the sealing plate and the change in the airflow path according to the present invention.

[0027] Figure 9 This is a schematic diagram of the planar structure of the dust removal mechanism of the present invention.

[0028] Figure 10 This is a schematic diagram of the planar structure of the striking rod and extension rod of the present invention.

[0029] In the diagram: 1. Separation equipment cylinder; 2. Receiving hopper; 3. Ceramic filter tube; 4. Discharge valve; 5. Back-blowing mechanism; 51. First insulation box; 52. Second insulation box; 53. Air supply pipe; 54. Back-blowing pipe; 55. Dust removal mechanism; 551. Guide rod; 552. Servo motor; 553. Transmission wheel; 554. Chain; 555. Receiving tank; 556. Opening; 557. Striking rod; 558. Extension rod; 559. Connecting rod; 560. Positioning protrusion; 561. 56. Semi-circular end; 57. Heat absorption pipe; 58. Heat absorption sheet; 59. Metering mechanism; 50. First connecting pipe; 51. Second connecting pipe; 52. Sealing plate; 53. Electric cylinder; 54. First through hole; 55. Second through hole; 56. Third through hole; 57. Fourth through hole; 58. Through hole; 59. Air intake assembly; 510. Air pressurization assembly; 511. Thickened pipe; 512. Electromagnetic pulse valve; 513. Positioning frame; 6. Mounting connection plate. Detailed Implementation

[0030] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0031] Example 1

[0032] like Figure 1 , Figure 2 As shown, a gas-solid separation device suitable for high-temperature exhaust gas treatment includes a separation device cylinder 1 and a receiving hopper 2 fixedly installed at its bottom. A reverse spraying mechanism 5 is fixedly installed at the gas outlet pipe of the separation device cylinder 1.

[0033] The reverse jetting mechanism 5 includes a heating mechanism, which includes a heat-absorbing pipe 56. The heat-absorbing pipe 56 is provided with a curved section and a straight section. A positioning frame 513 is fixedly connected to the outer wall of the straight section. The positioning frame 513 is fixedly installed on the pipe body of the air outlet pipe of the separation equipment cylinder 1. A heat-absorbing sheet 57 is welded to the outer wall of the curved section of the heat-absorbing pipe 56, and the heat-absorbing sheet 57 is spirally arranged along the surface of the heat-absorbing pipe 56. The curved section of the heat-absorbing pipe 56 is located inside the air outlet pipe of the separation equipment cylinder 1, and the straight section of the heat-absorbing pipe 56 is located outside the air outlet pipe of the separation equipment cylinder 1.

[0034] It should be noted that, as Figure 5 As shown, the gas outlet pipe of the separator cylinder 1 is T-shaped, with one of the gas outlets facing downwards. The heat absorption pipe 56 is located in the horizontal gas outlet. The addition of an outlet ensures that the heat absorption pipe 56 will not affect the normal emission of the exhaust gas.

[0035] In this embodiment, during normal gas-solid separation, the high-temperature exhaust gas enters from the inlet pipe at the bottom of the separator cylinder 1 and flows upward. After being filtered by the internal ceramic elements, the exhaust gas is discharged from the outlet pipe at the top of the separator cylinder 1. After the equipment has been running for a period of time, pulse jet cleaning is performed. Before cleaning, the reverse jet mechanism 5 first extracts air near the top of the separator cylinder 1 and stores the air in the heat absorption pipe 56 for preheating. The air will stay in the heat absorption pipe 56 for a period of time until it is heated to a temperature close to that of the exhaust gas before pulse jet cleaning is performed. The temperature of the cleaning air is close to that of the exhaust gas, and there will be no significant temperature difference between the air and the ceramic elements.

[0036] It should be noted that the heat-absorbing pipe 56 is divided into a curved section and a straight section. The straight section is connected to the positioning frame 513 to determine the position of the entire heat-absorbing pipe 56. The curved section is located inside the outlet pipe and is used to absorb the heat of the exhaust gas. A temperature sensor is installed on the inner wall of the curved section of the heat-absorbing pipe 56. Since the positioning frame 513 is installed on the outlet pipe of the separation equipment cylinder 1, the multiple heat-absorbing pipes 56 are arranged linearly and equally spaced along the positioning frame 513, and are also deployed along the axial direction of the outlet pipe of the separation equipment cylinder 1. During the gas-solid separation process, the exhaust gas discharged from the outlet pipe comes into contact with the heat-absorbing pipe 56. The heat contained in the exhaust gas is absorbed by the heat-absorbing pipe 56 and transferred to the air inside the pipe. By utilizing the heat of the high-temperature exhaust gas itself, the air used for back-blowing is heated to the same or close to the temperature of the exhaust gas. When the air is subsequently back-blown onto the magnetic element, ceramic thermal shock cracking will not occur. The problem is that the existence of the bend ensures that the heat absorption pipe 56 can store enough air. While meeting the consumption of a single back-jet cleaning, it extends the air flow path and ensures that the air can absorb enough heat. This structure uses the heat absorption pipe 56 as a heat-generating component to heat the air. At the same time, by storing air inside the heat absorption pipe 56, high-speed scouring of the heat absorption pipe 56 is avoided during the dust removal process. The spirally arranged heat absorption plate 57 greatly increases the contact area between the heat absorption pipe 56 and the high-temperature exhaust gas. At the same time, the spiral structure can change the flow trajectory of the high-temperature airflow on the surface of the heat absorption pipe 56, so that the airflow changes from a straight flow to a spiral flow, extending the contact time between the airflow and the heat absorption pipe 56 and the heat absorption plate 57, avoiding the waste of residual heat caused by the rapid passage of airflow, and making the heating of all parts of the heat absorption pipe 56 more uniform, preventing the airflow with a local temperature of low from entering the jet pipe.

[0037] like Figure 5 , Figure 7 and Figure 8 As shown in the figure, the dotted line represents the airflow path. During the continuous flow of air into the heat absorption pipe 56, there may be cases where the air in the bend of the heat absorption pipe 56 is not fully heated before flowing out, resulting in a large temperature difference between the heated air and the ceramic element. In order to further reduce the temperature difference, this application provides the following technical solution.

[0038] The end of the heat absorption pipe 56 is connected to a metering mechanism 58, which includes a first connecting pipe 581 and a second connecting pipe 582. The first connecting pipe 581 is located at the air inlet end of the heat absorption pipe 56, and the second connecting pipe 582 is located at the air outlet end of the heat absorption pipe 56. Both the first connecting pipe 581 and the second connecting pipe 582 have through holes 589. A sealing plate 583 is slidably arranged between the first connecting pipe 581 and the second connecting pipe 582. The sealing plate 583 is slidably connected to one end of the first connecting pipe 581 and has a first through hole 585 and a second through hole 586. The sealing plate 583 is slidably connected to one end of the second connecting pipe 582 and has a third through hole 587 and a fourth through hole 588. The fourth through hole 588 is located at the end of the sealing plate 583 and has a bent structure. One end of the fourth through hole 588 penetrates the sealing plate 583.

[0039] The metering mechanism 58 controls the air delivery to prevent air from being used for dust removal before it has been heated to the target temperature. During the air's entry into the heat absorption pipe 56, it passes through the first connecting pipe 581. As the air flows out of the heat absorption pipe 56, it passes through the second connecting pipe 582. Multiple heat absorption pipes 56 are connected in parallel via the first connecting pipe 581 and the second connecting pipe 582. When air is injected, the sealing plate 583 first moves upward, connecting the second through hole 586 with the through hole 589 inside the first connecting pipe 581, and connecting the fourth through hole 588 with a section of the through hole 589 inside the second connecting pipe 582. At this time, the air can completely pass through the entire heat absorption pipe 56, but it is not used for dust removal; instead, it fills the internal space of the heat absorption pipe 56. After the air in the heat absorption pipe 56 has circulated sufficiently, the sealing plate 583 moves downward, connecting the second through hole 586 with the first connecting pipe 581. The inner through hole 589 is offset to prevent air from entering. At the same time, the fourth through hole 588 is also offset from the through hole 589 in the second connecting pipe 582 to prevent air from escaping. When the temperature sensor in the heat absorption pipe 56 detects that the air temperature is close to the exhaust gas temperature, the sealing plate 583 moves downward, so that the first through hole 585 connects with the through hole 589 in the first connecting pipe 581, and the third through hole 587 connects with the two through holes 589 in the second connecting pipe 582. At this time, the air will no longer be discharged to the external environment, but will pass completely through the two through holes 589 in the second connecting pipe 582 and enter the separation equipment cylinder 1 for dust removal. The second connecting pipe 582 is also equipped with a temperature sensor. Once it is detected that the air temperature in the second connecting pipe 582 is lower than the exhaust gas temperature, the sealing plate 583 immediately re-seals the second connecting pipe 582 and repeats the above steps to replenish air and heat the air.

[0040] Example 2

[0041] like Figure 2 and Figure 3As shown, a first insulation box 51 and a second insulation box 52 are fixedly installed on two adjacent sides of the outer wall of the separation equipment cylinder 1, respectively. The first insulation box 51 is located on the side of the air outlet pipe of the separation equipment cylinder 1. A thickened pipe 511 is fixedly installed inside the second insulation box 52. An air pressurization component 510 is fixedly installed inside the first insulation box 51. An air supply pipe 53 connects the air pressurization component 510 and the thickened pipe 511.

[0042] It should be noted that the first insulation box 51 and the second insulation box 52 slow down the rate of heat loss by establishing a closed space. The bottom of the second connecting pipe 582 is embedded in the box body of the first insulation box 51, ensuring that when the sealing plate 583 moves upward, the fourth through hole 588 is directly connected to the external environment, allowing normal air circulation. The air pressurization component 510 provides a high-pressure air source for pulse jet cleaning through a compressor, and during the pressurization process, it can raise the air temperature again to compensate for the heat lost during subsequent transportation. The pressurized air enters the thickened pipe 511 through the air delivery pipe 53. The thickened pipe 511 serves as the main pipeline for transporting high-temperature and high-pressure air, and maintains the high pressure stability of the air through a large cross-sectional area. The air delivery pipe 53 is provided with a height difference along the air transportation direction to prevent air backflow.

[0043] like Figure 1 , Figure 3 and Figure 4 As shown, multiple electromagnetic pulse valves 512 are connected in parallel to the air outlet of the thickened pipe 511. The air outlet of the electromagnetic pulse valve 512 is connected to a backflush pipe 54. The backflush pipe 54 is fixedly installed inside the separator cylinder 1. An installation connecting plate 6 is fixedly installed on the inner wall of the separator cylinder 1. Multiple ceramic filter tubes 3 are fixedly installed at equal intervals at the bottom of the installation connecting plate 6. The ceramic filter tubes 3 are set in a vertical state and are located below the backflush pipe 54. The bottom of the receiving hopper 2 is connected to a discharge valve 4.

[0044] It should be noted that the electromagnetic pulse valve 512 receives signal commands from the electronic control system and controls the timing and duration of the high-temperature and high-pressure air jet by rapidly opening and closing. The backflush pipe 54 is fixed inside the separator cylinder 1 and located above the ceramic filter tubes 3. It is used to evenly distribute the high-temperature and high-pressure air delivered by the electromagnetic pulse valve 512 to the top of each ceramic filter tube 3, ensuring that the backflush airflow can act vertically downward on the inner wall of the ceramic filter tube 3, achieving all-round cleaning and avoiding dead corners in dust removal. The mounting connecting plate 6 is used to fix the ceramic filter tubes 3 and also serves as a sealing and separating function, dividing the interior of the separator cylinder 1 into an upper backflush cleaning zone and a lower filtration and dust collection zone, preventing the dust-laden airflow from crossing with the backflush airflow. To ensure that the filtration and dust removal processes do not interfere with each other, the ceramic filter tube 3 is vertically installed and located below the backflush pipe 54. During filtration, the high-temperature dust-laden airflow enters from the inlet of the separator cylinder 1 and flows from bottom to top through the outer wall of the ceramic filter tube 3. The dust is trapped by the porous structure of the ceramic filter tube 3, while the clean air passes through the inner wall of the filter tube and is discharged upward. During dust removal, the high-temperature and high-pressure air sprayed from the backflush pipe 54 rushes into the interior of the ceramic filter tube 3 from top to bottom. The airflow impact force desorbs the dust layer trapped on the outer wall of the filter tube. Under the action of gravity, the desorbed dust naturally settles into the receiving hopper 2 at the bottom of the separator cylinder 1, realizing the centralized collection of dust. The discharge valve 4 connected to the bottom of the receiving hopper 2 is used to discharge the dust collected in the receiving hopper 2 at regular intervals.

[0045] like Figure 1 , Figure 3 and Figure 4 As shown, an air intake assembly 59 is fixedly installed on the top of the first insulation box 51. A fan is installed inside the air intake assembly 59. A partition plate is set between the air intake assembly 59 and the air pressurization assembly 510. An electric cylinder 584 is fixedly installed on the inner wall of the first insulation box 51. The electric cylinder 584 is vertically arranged, and one end of the piston rod of the electric cylinder 584 is fixedly connected to one side of the sealing plate 583.

[0046] It should be noted that the electric cylinder 584 is also controlled by the electronic control system. The electronic control system controls the electric cylinder 584 based on the temperature sensor installed in the heat absorption pipe 56 and the temperature sensor installed in the second connecting pipe 582. The vertical arrangement of the electric cylinder 584 ensures that when the piston rod extends or retracts, it drives the sealing plate 583 to slide smoothly in the vertical direction, so as to achieve precise docking or isolation between the first through hole 585, the second through hole 586 and the third through hole 587 and the fourth through hole 588, thereby achieving the purpose of controlling the amount of air delivered at one time. The air intake assembly 59 is located on the top of the first insulation box 51 and consists of a fan and an air intake pipe. The air intake port of the air intake pipe is located above the first insulation box 51 and a dustproof net is installed at the air intake port. The fan can draw ambient temperature air from outside into the first insulation box 51 at a uniform speed.

[0047] Example 3

[0048] like Figure 6 and Figure 9 As shown, during the continuous emission of exhaust gas from the separator cylinder 1, the exhaust gas contains fine particulate matter. These particulate matter tends to accumulate at the angle between the heat absorption pipe 56 and the heat absorption plate 57. Furthermore, the particulate matter adhering to the heat absorption plate 57 can affect the heat absorption efficiency. In order to avoid dust accumulation on the heat absorption pipe 56 and the heat absorption plate 57 and to ensure the heat absorption efficiency, this application further provides the following technical solution.

[0049] Each heat absorption pipe 56 is provided with a dust removal mechanism 55 on one side. The dust removal mechanism 55 includes a guide rod 551. The shape of the guide rod 551 is adapted to the heat absorption pipe 56. The guide rod 551 is fixedly connected to the positioning frame 513. The guide rod 551 has an opening 556 on the side facing the heat absorption pipe 56. A chain 554 is provided inside the guide rod 551. A striking rod 557 is provided at the node of the chain 554. The striking rod 557 is located inside the opening 556. A servo motor 552 is fixedly installed on the inner wall of the first heat preservation box 51. A transmission wheel 553 is fixedly connected to the output end of the servo motor 552. The transmission wheel 553 is located between the semicircular part of the guide rod 551 and the positioning frame 513. The transmission wheel 553 meshes with the chain 554. A receiving groove 555 is provided at the junction of the transmission wheel 553 and the guide rod 551.

[0050] It should be noted that the cleaning mechanism 55 is used to clean the heat absorption pipe 56 and the heat absorption plate 57. The guide rod 551 has the same shape as the heat absorption pipe 56 and is also fixedly installed on the positioning frame 513, ensuring its structural stability and preventing the inability to contact the heat absorption plate 57. During cleaning, the servo motor 552 drives the transmission wheel 553, which meshes with the chain 554, causing the chain 554 to reciprocate along the inner wall of the guide rod 551. The presence of the receiving groove 555 ensures that the transmission wheel 553 can reciprocate along the chain. The chains 554 mesh with each other. When the chain 554 moves, it drives the striking rods 557 of each node to move synchronously. The striking rods 557 extend from the opening 556 and contact the heat-absorbing plates 57 on the surface of the heat-absorbing pipe 56. As the chain 554 drives the striking rods 557 to move, the striking rods 557 will generate mechanical vibration by striking the heat-absorbing plates 57, causing the fine particles accumulated at the angle between the heat-absorbing pipe 56 and the heat-absorbing plates 57 to detach. The particles attached to the surface of the heat-absorbing plates 57 will also fall off due to the vibration. The detached particles will be discharged with the high-temperature exhaust gas.

[0051] Example 4

[0052] like Figure 9 and Figure 10As shown, when the heat absorber 57 is exposed to high temperature for a long time, its overall strength will decrease to a certain extent. When the striking rod 557 strikes the heat absorber 57, excessive contact force can easily damage the heat absorber 57. In order to protect the heat absorber 57, this application further provides the following technical solution.

[0053] A connecting rod 559 is rotatably connected at the node of the chain 554. An extension rod 558 is integrally formed in the middle section of the connecting rod 559. A semi-circular end 561 is provided at the end of the extension rod 558. Positioning protrusions 560 are provided on both sides of the semi-circular end 561. A striking rod 557 is rotatably connected to the positioning protrusions 560. A torsion spring is fixedly connected between the striking rod 557 and the semi-circular end 561. The torsion spring is sleeved on the outer wall of the positioning protrusions 560.

[0054] It should be noted that the connecting rod 559, which is rotatably connected at the node of chain 554, is used to determine the position of the striking rod 557. Both ends of the connecting rod 559 are rotatably connected to the chain plates in chain 554, allowing it to adjust its angle with the reciprocating motion of chain 554, ensuring that the striking rod 557 is always aligned with the heat-absorbing plate 57. The integrally formed extension rod 558 in the middle section of the connecting rod 559 faces the opening 556, ensuring that the striking rod 557 is always within the opening 556. This does not affect the striking stroke and provides sufficient space for the rotation of the striking rod 557. The semi-circular end 561 and the positioning protrusions 560 on both sides of the extension rod 558 define the position of the striking rod 557. The chain 554 rotates around the center of rotation and provides installation space for the torsion spring. When the chain 554 drives the connecting rod 559 and the extension rod 558, causing the striking rod 557 to contact the surface of the heat absorber 57, the resistance of the heat absorber 57 will force the striking rod 557 to rotate around the positioning protrusion 560. At this time, the torsion spring sleeved on the positioning protrusion 560 will be compressed and stored. When the chain 554 drives the striking rod 557 away from the heat absorber 57, the torsion spring releases its elastic potential energy, causing the striking rod 557 to reset, so that the striking rod 557 can strike the next heat absorber 57, thereby achieving flexible dust removal, protecting the heat absorber 57 while ensuring the waste heat absorption efficiency of the heat absorption pipe 56.

[0055] Working principle of the invention:

[0056] High-temperature exhaust gas is introduced into the inlet pipe at the bottom of the separator cylinder 1. The high-temperature exhaust gas flows from bottom to top and passes through multiple vertically arranged ceramic filter tubes 3. The ceramic filter tubes 3 use their porous structure to trap fine particles in the exhaust gas, achieving gas-solid separation. The filtered exhaust gas continues to flow upward and is finally discharged from the T-shaped outlet pipe at the top of the separator cylinder 1.

[0057] When the exhaust gas flows through the inside of the outlet pipe, it comes into full contact with the curved part of the heat absorption pipe 56 and the spirally arranged heat absorption plates 57 on the surface. The residual heat in the exhaust gas is absorbed by the heat absorption pipe 56 and the heat absorption plates 57 and used for the air in the heat absorption pipe 56 to prepare for the preheating of the subsequent reverse jet air. The dust intercepted by the ceramic filter tube 3 settles into the receiving hopper 2 at the bottom of the separation equipment cylinder 1 under the action of gravity, and is temporarily stored, waiting for subsequent discharge.

[0058] When the equipment runs to the preset dust removal interval time, or when the filtration resistance of the ceramic filter tube 3 reaches the set threshold, the electrical control system starts the back-jet blowing mechanism 5 to prepare for dust removal. At this time, the piston rod of the electric cylinder 584 retracts, driving the sealing plate 583 to move upward, so that the second through hole 586 is connected to the through hole 589 of the first connecting pipe 581, and the fourth through hole 588 is connected to a section of the through hole 589 of the second connecting pipe 582. At this time, the fourth through hole 588 is connected to the external environment.

[0059] The fan of the air intake assembly 59 is started to draw ambient air into the first insulation box 51 at a uniform speed. The air flows out from the outlet of the fourth through hole 588 through the heat absorption pipe 56. During this process, the air will fill the entire heat absorption pipe 56. Then, the electric control system controls the piston rod of the electric cylinder 584 to extend, so that the second through hole 586 is misaligned with the through hole 589 of the first connecting pipe 581, and the fourth through hole 588 is misaligned with the through hole 589 of the second connecting pipe 582. At this stage, the air is not used for dust removal, but only for preheating. The temperature sensor in the heat absorption pipe 56 collects the air temperature in the pipe in real time and transmits the signal to the electric control system. If the temperature reaches the target, the temperature sensor sends a signal to the electric control system, and the preheating is completed.

[0060] The electric control system controls the piston rod of the electric cylinder 584 to continue to extend, driving the sealing plate 583 to move downward, so that the first through hole 585 is connected to the through hole 589 of the first connecting pipe 581, and the third through hole 587 is connected to the two through holes 589 of the second connecting pipe 582. The preheated high temperature and high pressure air is no longer discharged to the outside, but enters the second connecting pipe 582 through the third through hole 587 and is then transported to the thickened pipe 511.

[0061] The electronic control system controls multiple parallel electromagnetic pulse valves 512 to open and close rapidly, quantitatively and instantaneously delivering high-temperature and high-pressure air to the backflush pipe 54. The backflush pipe 54 evenly distributes the airflow to the top of each ceramic filter tube 3. The airflow rushes vertically downward into the interior of the ceramic filter tube 3, using strong impact force to desorb the dust layer trapped on the outer wall of the filter tube. During this process, the temperature sensor in the second connecting pipe 582 collects the air temperature in the pipe in real time. If the temperature is much lower than the exhaust gas temperature, the piston rod of the electric cylinder 584 retracts, pulling the sealing plate 583 back, so that the second through hole 586 is connected to the through hole 589 of the first connecting pipe 581, and the fourth through hole 588 is connected to a section of the through hole 589 of the second connecting pipe 582, allowing the air to refill the heat absorption pipe 56 for continued heating. The above steps can be repeated subsequently.

[0062] After desorption, the dust settles into the bottom receiving hopper 2 through the inner wall of the separator cylinder 1 under the action of gravity. When the dust in the receiving hopper 2 reaches the set capacity, or after the dust removal operation is completed, the electrical control system starts the discharge valve 4 to discharge the dust. After the discharge is completed, the discharge valve 4 automatically closes to prevent external air from entering the equipment.

[0063] After the equipment has been running for a certain period of time, the electrical control system starts the dust removal mechanism 55 to remove the accumulated dust from the heat absorption pipe 56 and the heat absorption plate 57, so as to avoid the accumulation of particulate matter affecting the waste heat absorption efficiency. The output end of the servo motor 552 drives the transmission wheel 553 to rotate. The transmission wheel 553 meshes with the chain 554, causing the chain 554 to reciprocate inside the guide rod 551. The connecting rod 559 at the node of the chain 554 moves with the chain 554. By striking the heat absorption plate 57, mechanical vibration is generated, causing the particulate matter accumulated at the angle between the heat absorption pipe 56 and the heat absorption plate 57 to detach. The particulate matter attached to the surface of the heat absorption plate 57 will fall off simultaneously. The detached particulate matter is discharged from the exhaust pipe along with the high-temperature exhaust gas.

[0064] During the striking process, the resistance of the heat absorber 57 forces the striking rod 557 to rotate around the positioning protrusions 560 on both sides of the semi-circular end 561. The torsion spring sleeved on the positioning protrusion 560 is compressed and stores energy, converting the rigid impact force into elastic potential energy. When the striking rod 557 leaves the heat absorber 57, the torsion spring releases the elastic potential energy, causing the striking rod 557 to return to its original position and continue striking the subsequent heat absorber 57, thus protecting the heat absorber 57 while cleaning the dust.

[0065] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A gas-solid separation device suitable for high-temperature exhaust gas treatment, comprising a separation device cylinder (1) and a receiving hopper (2) fixedly installed at its bottom, characterized in that, A reverse jetting mechanism (5) is fixedly installed at the air outlet pipe of the separation equipment cylinder (1); The back-blowing mechanism (5) includes a heating mechanism, which includes a heat-absorbing pipe (56). The heat-absorbing pipe (56) is provided with a curved section and a straight section. A positioning frame (513) is fixedly connected to the outer wall of the straight section. The positioning frame (513) is fixedly installed on the pipe body of the air outlet pipe of the separation equipment cylinder (1). A heat-absorbing sheet (57) is welded to the outer wall of the curved section of the heat-absorbing pipe (56), and the heat-absorbing sheet (57) is spirally arranged along the surface of the heat-absorbing pipe (56). The curved section of the heat-absorbing pipe (56) is located inside the air outlet pipe of the separation equipment cylinder (1), and the straight section of the heat-absorbing pipe (56) is located outside the air outlet pipe of the separation equipment cylinder (1). The heat absorption pipe (56) is connected to a metering mechanism (58) at its end. The metering mechanism (58) includes a first connecting pipe (581) and a second connecting pipe (582). The first connecting pipe (581) is located at the air inlet of the heat absorption pipe (56), and the second connecting pipe (582) is located at the air outlet of the heat absorption pipe (56). Both the interior of the first connecting pipe (581) and the interior of the second connecting pipe (582) are provided with through holes (589). A sealing plate (583) is slidably provided between the first connecting pipe (581) and the second connecting pipe (582). The sealing plate (583) is slidably connected to the first connecting pipe (581) and has a first through hole (585) and a second through hole (586) at one end. The sealing plate (583) is slidably connected to the second connecting pipe (582) and has a third through hole (587) and a fourth through hole (588) at one end. The fourth through hole (588) is located at the end of the sealing plate (583). The fourth through hole (588) has a bent structure and one end of the fourth through hole (588) penetrates the sealing plate (583). The outer walls of the separation equipment cylinder (1) are respectively fixedly installed with a first insulation box (51) and a second insulation box (52). The first insulation box (51) is located on the side of the air outlet pipe of the separation equipment cylinder (1). The second insulation box (52) is fixedly installed with a thickened pipe (511). The first insulation box (51) is fixedly installed with an air pressurization assembly (510). An air supply pipe (53) is connected between the air pressurization assembly (510) and the thickened pipe (511). The outlet of the thickened pipe (511) is connected in parallel with multiple electromagnetic pulse valves (512). The outlet of the electromagnetic pulse valves (512) is connected to a backflush pipe (54). The backflush pipe (54) is fixedly installed inside the separator cylinder (1). An installation connecting plate (6) is fixedly installed on the inner wall of the separator cylinder (1). Multiple ceramic filter tubes (3) are fixedly installed at equal intervals at the bottom of the installation connecting plate (6). The ceramic filter tubes (3) are set in a vertical state and are located below the backflush pipe (54). The bottom of the receiving hopper (2) is connected to a discharge valve (4).

2. The gas-solid separation device suitable for high-temperature exhaust gas treatment according to claim 1, characterized in that, An air intake assembly (59) is fixedly installed on the top of the first insulation box (51). A fan is installed inside the air intake assembly (59). A partition plate is set between the air intake assembly (59) and the air pressurization assembly (510). An electric cylinder (584) is fixedly installed on the inner wall of the first insulation box (51). The electric cylinder (584) is vertically arranged, and one end of the piston rod of the electric cylinder (584) is fixedly connected to one side of the sealing plate (583).

3. A gas-solid separation device suitable for high-temperature exhaust gas treatment according to claim 1, characterized in that, Each of the heat-absorbing pipes (56) is provided with a dust-removing mechanism (55) on one side. The dust-removing mechanism (55) includes a guide rod (551). The shape of the guide rod (551) is adapted to the heat-absorbing pipe (56). The guide rod (551) is fixedly connected to the positioning frame (513). An opening (556) is opened on the side of the guide rod (551) facing the heat-absorbing pipe (56). A chain (554) is provided inside the guide rod (551). A striking rod (557) is provided at the node of the chain (554). The striking rod (557) is located inside the opening (556).

4. A gas-solid separation device suitable for high-temperature exhaust gas treatment according to claim 3, characterized in that, A servo motor (552) is fixedly installed on the inner wall of the first heat preservation box (51). A transmission wheel (553) is fixedly connected to the output end of the servo motor (552). The transmission wheel (553) is located between the semicircular part of the guide rod (551) and the positioning frame (513). The transmission wheel (553) meshes with the chain (554), and a receiving groove (555) is provided at the junction of the transmission wheel (553) and the guide rod (551).

5. A gas-solid separation device suitable for high-temperature exhaust gas treatment according to claim 4, characterized in that, The chain (554) is rotatably connected to a connecting rod (559) at a node. An extension rod (558) is integrally formed in the middle section of the connecting rod (559), and a semi-circular end (561) is provided at the end of the extension rod (558).

6. A gas-solid separation device suitable for high-temperature exhaust gas treatment according to claim 5, characterized in that, Both sides of the semi-circular end (561) are provided with positioning protrusions (560). The striking rod (557) is rotatably connected to the positioning protrusions (560). A torsion spring is fixedly connected between the striking rod (557) and the semi-circular end (561). The torsion spring is sleeved on the outer wall of the positioning protrusions (560).

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