Municipal sludge pyrolysis gas dustproof combustion device

Abstract

The invention relates to the technical field of municipal sludge pyrolysis, in particular to a municipal sludge pyrolysis gas dustproof combustion device which comprises a support, a pyrolysis structure is mounted at the top end of the support, a discharging structure is mounted at the bottom end of the pyrolysis structure, a cleaning structure is mounted on the discharging structure, and a dustproof structure is mounted at the outer end of the pyrolysis structure. A combustion structure is mounted at the top end of the pyrolysis structure, a sealing structure is mounted at the top end of the pyrolysis structure, and a driving structure is mounted at the side end of the combustion structure; the sludge can be subjected to pyrolysis treatment through the pyrolysis structure, blocky sludge can be scattered, so that gaps in the sludge are enlarged, high-temperature gas can conveniently circulate in the sludge, the pyrolysis speed is further increased, and through the combustion structure, the sealing structure and the driving structure, when pyrolysis gas generated after pyrolysis treatment is subjected to combustion treatment, the combustion effect of the pyrolysis gas is improved. And pyrolysis gas is separated from residues in the pyrolysis box, so that dust explosion caused by excessive dust in the pyrolysis box when the pyrolysis gas is ignited is prevented.

Description

Technical Field

[0001] This invention relates to the field of municipal sludge pyrolysis technology, specifically a dust-proof combustion device for municipal sludge pyrolysis gas. Background Technology

[0002] Sludge generated during urban life and the operation and maintenance of urban municipal facilities related to urban life activities can be categorized by source into sewage treatment plant sludge, water supply plant sludge, drainage pipe sludge, dredging sludge, and construction mud. The properties of sludge from different sources vary greatly, and the corresponding treatment and disposal technologies and resource utilization pathways also differ. Urban sludge contains many harmful elements. The most common method for treating urban sludge is pyrolysis to remove these harmful elements. Urban sludge pyrolysis involves adding dried sludge to a pyrolysis furnace, introducing high-temperature pyrolysis gas, and causing the sludge to undergo a dry distillation reaction under the action of the high-temperature pyrolysis gas, resulting in the release of combustible gases from the harmful elements within the sludge.

[0003] An existing patent application (202321320762.0) describes a municipal sludge pyrolysis gas combustion device. This device disperses high-temperature gas into the pyrolysis chamber through multiple gas outlets, ensuring sufficient contact between the gas and the sludge to improve pyrolysis efficiency. Simultaneously, an extended rod drives rotating pulverizing blades to crush the sludge, increasing the internal gaps and facilitating the flow of high-temperature gas, thus accelerating pyrolysis. The municipal sludge undergoes a dry distillation reaction at high temperatures, generating combustible gases such as carbon monoxide and hydrogen sulfide. These gases are then ignited by an igniter, removing harmful substances from the sludge. However, the combustion of pyrolysis gas releases a large amount of gas. If the furnace pressure is insufficient, physical explosions may occur. Furthermore, the sludge produces a large amount of dust after heat treatment, which may cause flame extinguishing or deflagration. Additionally, when the residue is discharged through the slag discharge port, a significant amount of dust overflows, which, if not cleaned promptly, can negatively impact the environment. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a dust-proof combustion device for municipal sludge pyrolysis gas.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a municipal sludge pyrolysis gas dust prevention and combustion device, including a support, a pyrolysis structure installed at the top of the support, a discharge structure installed at the bottom of the pyrolysis structure, a cleaning structure installed on the discharge structure, a dust prevention structure installed at the outer end of the pyrolysis structure, a combustion structure installed at the top of the pyrolysis structure, a sealing structure installed at the top of the pyrolysis structure, and a driving structure installed at the side end of the combustion structure; The pyrolysis structure includes a pyrolysis chamber, the pyrolysis chamber is fixedly connected to the top of the support, a base plate is fixedly connected to the bottom of the pyrolysis chamber, a T-shaped tube is rotatably connected to the center of the base plate, and multiple air outlets are fixedly connected to the top of the T-shaped tube in a linear distribution.

[0006] Specifically, an extension rod is fixedly connected to the top of the T-shaped tube, and multiple crushing blades are fixedly connected to the outer end of the extension rod in a ring array.

[0007] Specifically, the discharge structure includes a limiting ring, the outer end of the T-shaped tube is fixedly connected to the limiting ring, the outer end of the limiting ring is fixedly connected to multiple crossbars in a ring array, the bottom end of the crossbars is fixedly connected to a cleaning brush, and the cleaning brush abuts against the bottom plate.

[0008] Specifically, the bottom plate has an inclined groove at the top and the pyrolysis box has a slag discharge port on the side.

[0009] Specifically, the cleaning structure includes a connecting ring, the outer end of the crossbar is fixedly connected to the connecting ring, the top end of the connecting ring is fixedly connected to a scraper, and the scraper is in contact with the inside of the pyrolysis chamber.

[0010] Specifically, the dustproof structure includes a guide rail, which is fixedly connected to the bottom of the pyrolysis box. A first slider is slidably connected to the guide rail, and a cover is fixedly connected to the first slider.

[0011] Specifically, a second slider is slidably connected to the guide rail, and a filter bag is fixedly connected to the second slider.

[0012] Specifically, the combustion structure includes a fixed sleeve, the top of the pyrolysis chamber is fixedly connected to the fixed sleeve, the top of the fixed sleeve is rotatably connected to a cover plate, and an igniter is installed on the inner wall of the fixed sleeve.

[0013] Specifically, the sealing structure includes a fixed ring, a fixed ring fixedly connected to the top of the pyrolysis box, a rotating ring rotatably connected to the bottom of the fixed sleeve, a fixed post fixedly connected to the top of the fixed ring, a sealing plate rotatably connected to the fixed post, a fixed groove provided inside the rotating ring, the fixed post and the fixed groove being slidably connected, a sliding rod fixedly connected to the bottom of the rotating ring, and a sliding groove provided at the top of the sealing plate, the sliding rod and the sliding groove being slidably connected.

[0014] Specifically, the drive structure includes a second motor, the second motor is mounted on the side of the fixed sleeve, a gear is fixedly connected to the output end of the second motor, a gear ring is fixedly connected to the outside of the rotating ring, and the gear and the gear ring mesh.

[0015] The beneficial effects of this invention are: (1) The municipal sludge pyrolysis gas dust prevention combustion device of the present invention can pyrolyze sludge through the pyrolysis structure, and can also break up the sludge blocks, thereby increasing the gaps inside the sludge, facilitating the flow of high temperature gas in the sludge, and thus accelerating the pyrolysis speed.

[0016] (2) The municipal sludge pyrolysis gas dust prevention combustion device of the present invention, through combustion structure, sealing structure and driving structure, can separate the pyrolysis gas and the residue in the pyrolysis box when the pyrolysis gas generated after pyrolysis is burned, so as to prevent excessive dust in the pyrolysis box from causing dust explosion when the pyrolysis gas is ignited.

[0017] (3) The municipal sludge pyrolysis gas dust prevention combustion device of the present invention, through the discharge structure, cleaning structure and dust prevention structure, not only facilitates the removal of residue inside the pyrolysis box, but also prevents excessive dust inside the pyrolysis box from causing environmental pollution when the pyrolysis box is opened, and can also clean the inner wall of the pyrolysis box. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the fixing ring and the sealing plate of the present invention; Figure 3 This is a schematic diagram of the connection structure between the rotating ring and the gear ring of the present invention; Figure 4 This is a schematic diagram of the connection structure between the guide rail and the first slider of the present invention; Figure 5 This is a schematic diagram of the connection structure between the extended rod and the crushing blade of the present invention; Figure 6 This is a schematic diagram of the connection structure between the base plate and the inclined groove of the present invention; Figure 7 This is a schematic diagram of the connection structure between the limiting ring and the crossbar of the present invention; Figure 8 This is a schematic diagram of the connection structure of the connecting ring and the scraper rod according to the present invention.

[0020] In the diagram: 1. Support frame; 2. Pyrolysis structure; 201. Pyrolysis chamber; 202. Base plate; 203. T-tube; 204. Air outlet; 205. Extension rod; 206. Crushing blades; 3. Discharge structure; 301. Limiting ring; 302. Crossbar; 303. Cleaning brush; 304. Inclined chute; 305. Slag discharge port; 4. Cleaning structure; 401. Connecting ring; 402. Scraper; 5. Dustproof structure; 501. Guide rail; 502. First 503. Slider; 504. Cover; 505. Second slider; 506. Filter bag; 6. Combustion structure; 607. Fixing sleeve; 608. Cover plate; 609. Igniter; 700. Sealing structure; 701. Fixing ring; 702. Rotating ring; 703. Fixing column; 704. Sealing plate; 705. Fixing groove; 706. Sliding rod; 707. Sliding groove; 8. Drive structure; 801. Second motor; 802. Gear; 803. Gear ring. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] like Figure 1 , Figure 2 and Figure 5 As shown, the municipal sludge pyrolysis gas dust prevention and combustion device of the present invention includes a support 1, a pyrolysis structure 2 installed at the top of the support 1, a discharge structure 3 installed at the bottom of the pyrolysis structure 2, a cleaning structure 4 installed on the discharge structure 3, a dust prevention structure 5 installed at the outer end of the pyrolysis structure 2, a combustion structure 6 installed at the top of the pyrolysis structure 2, a sealing structure 7 installed at the top of the pyrolysis structure 2, and a driving structure 8 installed on the side of the combustion structure 6. Specifically, such as Figure 1 , Figure 5 , Figure 6 and Figure 7As shown, the pyrolysis structure 2 includes a pyrolysis chamber 201. The pyrolysis chamber 201 is fixedly connected to the top of the support 1. A bottom plate 202 is fixedly connected to the bottom of the pyrolysis chamber 201. A T-shaped tube 203 is rotatably connected to the center of the bottom plate 202. Multiple air outlets 204 are fixedly connected to the top of the T-shaped tube 203 in a linear arrangement. An extension rod 205 is fixedly connected to the top of the T-shaped tube 203. Multiple crushing blades 206 are fixedly connected to the outer end of the extension rod 205 in a ring array. The cover plate 602 is rotated open, and then the sludge is put into the pyrolysis chamber 201. The cover plate 602 is then closed, and the T-shaped tube 204 is closed. 3. Connect to an external heating device, and then spray high-temperature hot gas into the pyrolysis chamber 201 through the gas outlet 204. Then start the drive device at the bottom of the pyrolysis chamber 201, which can drive the T-shaped tube 203 to rotate, so that the hot gas can be evenly sprayed into the pyrolysis chamber 201. When the T-shaped tube 203 rotates, it can drive the extension rod 205 to rotate, and the extension rod 205 drives the crushing blade 206 to rotate. The crushing blade 206 crushes the sludge, thereby increasing the gap inside the sludge, facilitating the flow of high-temperature gas in the sludge, thereby accelerating the pyrolysis speed, so that the urban sludge undergoes a dry distillation reaction at high temperature to generate combustible gases such as carbon monoxide and hydrogen sulfide.

[0023] Specifically, such as Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the discharge structure 3 includes a limiting ring 301. The limiting ring 301 is fixedly connected to the outer end of the T-shaped tube 203. Multiple crossbars 302 are fixedly connected to the outer end of the limiting ring 301 in a ring array. A cleaning brush 303 is fixedly connected to the bottom end of the crossbars 302. The cleaning brush 303 abuts against the bottom plate 202. The top of the bottom plate 202 is provided with an inclined groove 304. The side end of the pyrolysis box 201 is provided with a slag discharge port 305. The T-shaped tube 203 can drive the limiting ring 301 to rotate. Therefore, the cleaning brush 303 at the bottom end of the crossbars 302 can clean the residue onto the inclined groove 304 and discharge the material through the inclined groove 304. During the discharge, dust can be prevented from overflowing and affecting the environment.

[0024] Specifically, such as Figure 5 As shown, the cleaning structure 4 includes a connecting ring 401. The outer end of the crossbar 302 is fixedly connected to the connecting ring 401, and the top end of the connecting ring 401 is fixedly connected to a scraper 402. The scraper 402 abuts against the inside of the pyrolysis box 201. At the same time, the scraper 402 is driven to rotate by the limiting ring 301, which can clean the inner wall of the pyrolysis box 201 and prevent residue from condensing on the inner wall of the pyrolysis box 201 and affecting subsequent use.

[0025] Specifically, such as Figure 1 and Figure 4As shown, the dustproof structure 5 includes a guide rail 501. The guide rail 501 is fixedly connected to the bottom of the pyrolysis box 201. A first slider 502 is slidably connected to the guide rail 501. A cover 503 is fixedly connected to the first slider 502. A second slider 504 is slidably connected to the guide rail 501. A filter bag 505 is fixedly connected to the second slider 504. After combustion, the first slider 502 slides on the guide rail 501. When the cover 503 and the slag discharge port 305 are separated, the second slider 504 slides, which can slide the filter bag 505 onto the slag discharge port 305. Therefore, the dust in the pyrolysis box 201 can be filtered through the filter bag 505.

[0026] Specifically, such as Figure 1 As shown, the combustion structure 6 includes a fixed sleeve 601. The fixed sleeve 601 is fixedly connected to the top of the pyrolysis box 201. A cover plate 602 is rotatably connected to the top of the fixed sleeve 601. An igniter 603 is installed on the inner wall of the fixed sleeve 601. When the igniter 603 is activated, the pyrolysis gas can be combusted.

[0027] Specifically, such as Figure 2 and Figure 3 As shown, the sealing structure 7 includes a fixed ring 701. The fixed ring 701 is fixedly connected to the top of the pyrolysis box 201. A rotating ring 702 is rotatably connected to the bottom of the fixed sleeve 601. A fixed post 703 is fixedly connected to the top of the fixed ring 701. A sealing plate 704 is rotatably connected to the fixed post 703. A fixed groove 705 is provided inside the rotating ring 702. The fixed post 703 and the fixed groove 705 are slidably connected. A sliding rod 706 is fixedly connected to the bottom of the rotating ring 702. A sliding groove 707 is provided at the top of the sealing plate 704. The sliding rod 706 and the sliding groove 707 are slidably connected. The rotation of the rotating ring 702 can drive the sliding rod 706 to rotate. Because the sliding rod 706 rotates in the sliding groove 707, the fixed post 703 can drive the sealing plate 704 to rotate and close. Therefore, the pyrolysis gas in the fixed sleeve 601 and the pyrolysis box 201 can be sealed. The fixed groove 705 can limit the rotation ring 702.

[0028] Specifically, such as Figure 1 , Figure 2 and Figure 3As shown, the drive structure 8 includes a second motor 801. The second motor 801 is installed on the side of the fixed sleeve 601. A gear 802 is fixedly connected to the output end of the second motor 801. A gear ring 803 is fixedly connected to the outside of the rotating ring 702. The gear 802 and the gear ring 803 mesh. After pyrolysis, the pyrolysis gas condenses in the fixed sleeve 601 at the top of the pyrolysis box 201. Then, the second motor 801 is started, and the gear ring 803 is driven to rotate through the gear 802, thus driving the rotating ring 702 to rotate.

[0029] In use, when sludge needs to be pyrolyzed, the cover plate 602 is rotated open, and the sludge is placed into the pyrolysis chamber 201. The cover plate 602 is then closed, and the T-tube 203 is connected to the external heating device. High-temperature hot air is then sprayed into the pyrolysis chamber 201 through the air outlet 204. The drive device at the bottom of the pyrolysis chamber 201 is then activated, which drives the T-tube 203 to rotate, thus evenly distributing hot air inside the pyrolysis chamber 201. The rotation of the T-tube 203 drives the extension rod 205 to rotate, thereby... The rotating pulverizing blades 206 pulverize the sludge, increasing the internal gaps and facilitating the flow of high-temperature gas. This accelerates the pyrolysis process, causing the municipal sludge to undergo a dry distillation reaction at high temperatures, producing combustible gases such as carbon monoxide and hydrogen sulfide. After pyrolysis, the pyrolysis gas condenses in the fixed sleeve 601 at the top of the pyrolysis chamber 201. Then, the second motor 801 is started, which drives the gear ring 803 to rotate via the gear 802. This, in turn, drives the rotating ring 702 to rotate, which in turn drives the sliding rod 70. 6. Rotation: The slide bar 706 rotates within the slide groove 707, thus the fixed column 703 drives the sealing plate 704 to rotate and close, thereby sealing the pyrolysis gas within the fixed sleeve 601 and the pyrolysis box 201. The fixed groove 705 limits the rotation ring 702. Then, the igniter 603 is activated to burn the pyrolysis gas. After combustion, the first slider 502 slides on the guide rail 501. When the cover 503 and the slag discharge port 305 separate, the second slider 504 slides, which can open the filter bag 5. The 05 slides onto the slag discharge port 305, so the dust in the pyrolysis box 201 can be filtered through the filter bag 505. The T-shaped tube 203 continues to rotate, which can drive the limiting ring 301 to rotate. Therefore, the cleaning brush 303 at the bottom of the crossbar 302 can clean the residue onto the inclined chute 304, and discharge the material through the inclined chute 304. During the discharge, dust can be prevented from overflowing and affecting the environment. At the same time, the limiting ring 301 drives the scraper 402 to rotate, which can clean the inner wall of the pyrolysis box 201 and prevent the residue from condensing on the inner wall of the pyrolysis box 201 and affecting subsequent use.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A dust-prevention combustion device for municipal sludge pyrolysis gas, characterized in that: Includes a support (1), a pyrolysis structure (2) installed at the top of the support (1), a discharge structure (3) installed at the bottom of the pyrolysis structure (2), a cleaning structure (4) installed on the discharge structure (3), a dustproof structure (5) installed at the outer end of the pyrolysis structure (2), a combustion structure (6) installed at the top of the pyrolysis structure (2), a sealing structure (7) installed at the top of the pyrolysis structure (2), and a driving structure (8) installed on the side of the combustion structure (6). The pyrolysis structure (2) includes a pyrolysis box (201), the top of the support (1) is fixedly connected to the pyrolysis box (201), the bottom of the pyrolysis box (201) is fixedly connected to the bottom, the center of the bottom plate (202) is rotatably connected to a T-shaped tube (203), and the top of the T-shaped tube (203) is fixedly connected to multiple air outlets (204) in a linear distribution relationship.

2. The municipal sludge pyrolysis gas dust suppression combustion device according to claim 1, characterized in that: The top end of the T-shaped tube (203) is fixedly connected to an extension rod (205), and the outer end of the extension rod (205) is fixedly connected to multiple crushing blades (206) in a ring array.

3. The municipal sludge pyrolysis gas dust suppression combustion device according to claim 1, characterized in that: The discharge structure (3) includes a limiting ring (301). The T-shaped tube (203) is fixedly connected to the limiting ring (301) at its outer end. The limiting ring (301) is fixedly connected to multiple crossbars (302) in a ring array at its outer end. The bottom end of the crossbars (302) is fixedly connected to a cleaning brush (303). The cleaning brush (303) abuts against the bottom plate (202).

4. The municipal sludge pyrolysis gas dust suppression combustion device according to claim 1, characterized in that: The bottom plate (202) is provided with a sloping groove (304) at the top, and the pyrolysis box (201) is provided with a slag discharge port (305) at the side.

5. A municipal sludge pyrolysis gas dust suppression combustion device according to claim 3, characterized in that: The cleaning structure (4) includes a connecting ring (401), the outer end of the crossbar (302) is fixedly connected to the connecting ring (401), the top end of the connecting ring (401) is fixedly connected to the scraper (402), and the scraper (402) is in contact with the inside of the pyrolysis box (201).

6. The municipal sludge pyrolysis gas dust suppression combustion device according to claim 1, characterized in that: The dustproof structure (5) includes a guide rail (501), the bottom of the pyrolysis box (201) is fixedly connected to the guide rail (501), a first slider (502) is slidably connected on the guide rail (501), and a cover (503) is fixedly connected on the first slider (502).

7. A municipal sludge pyrolysis gas dust suppression combustion device according to claim 6, characterized in that: A second slider (504) is slidably connected to the guide rail (501), and a filter bag (505) is fixedly connected to the second slider (504).

8. The municipal sludge pyrolysis gas dust suppression combustion device according to claim 1, characterized in that: The combustion structure (6) includes a fixed sleeve (601), the top of the pyrolysis box (201) is fixedly connected to the fixed sleeve (601), the top of the fixed sleeve (601) is rotatably connected to the cover plate (602), and an igniter (603) is installed on the inner wall of the fixed sleeve (601).

9. A municipal sludge pyrolysis gas dust suppression combustion device according to claim 8, characterized in that: The sealing structure (7) includes a fixed ring (701), a fixed ring (701) is fixedly connected to the top of the pyrolysis box (201), a rotating ring (702) is rotatably connected to the bottom of the fixed sleeve (601), a fixed column (703) is fixedly connected to the top of the fixed ring (701), a sealing plate (704) is rotatably connected to the fixed column (703), a fixed groove (705) is provided inside the rotating ring (702), the fixed column (703) and the fixed groove (705) are slidably connected, a sliding rod (706) is fixedly connected to the bottom of the rotating ring (702), a sliding groove (707) is provided at the top of the sealing plate (704), and the sliding rod (706) and the sliding groove (707) are slidably connected.

10. A municipal sludge pyrolysis gas dust suppression combustion device according to claim 9, characterized in that: The drive structure (8) includes a second motor (801), the second motor (801) is installed on the side of the fixed sleeve (601), the output end of the second motor (801) is fixedly connected to a gear (802), and a gear ring (803) is fixedly connected to the outside of the rotating ring (702), and the gear (802) and the gear ring (803) mesh.

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