Pyrolysis gasification furnace

Abstract

The utility model relates to a pyrolysis gasification furnace, which belongs to the technical field of material gasification and comprises an incinerator main body, a first combustion chamber is arranged in the incinerator main body, a feeding device communicated with the first combustion chamber is arranged at the top of the incinerator main body, and a connecting flue is further arranged at the top of the incinerator main body. The first combustion chamber is communicated with the second combustion chamber through the connecting flue, an ignition combustion device is arranged at the joint of the first combustion chamber and the connecting flue, and a rapid ignition device is arranged on the side wall of the connecting flue. A quick ignition device is arranged on the side wall of the connecting flue, an ignition combustion device is arranged at the joint of the first combustion chamber and the connecting flue, the quick ignition device is arranged in the connecting flue, efficient starting of the incineration process can be ensured through the double ignition mechanism, physical connection of the first combustion chamber and the second combustion chamber is achieved through the connecting flue, and the combustion efficiency is improved. And the combustion process is optimized through the internal structure.

Description

Technical Field

[0001] The utility model relates to the technical field of material gasification, and more specifically, to a pyrolysis gasification furnace. Background Art

[0002] As an advanced energy conversion device, pyrolysis gasification furnaces are facing stringent national requirements for the waste incineration industry, requiring further upgrades and improvements to some of their initial technologies to meet the country's higher emission requirements for waste incineration flue gas. A pyrolysis gasification incinerator consists of a primary combustion chamber, a secondary combustion chamber, and a connecting flue. The primary combustion chamber, also known as a solid waste pyrolysis incinerator, dries, pyrolyzes, incinerates, and cools solid waste. The slag is then discharged, and the harmful gases produced by the incineration flow through the flue into the secondary combustion chamber (also known as a gaseous incinerator) for incineration in an oxygen-rich state to eliminate harmful substances.

[0003] Most existing pyrolysis gasification furnaces start igniting garbage in the first combustion chamber to produce harmful gases. The harmful gases can only burn when the temperature reaches about 650°C in the second combustion chamber. Because the second combustion chamber has a large space, it takes a long time to raise the temperature of the second combustion chamber to about 650°C. Utility Model Content

[0004] The technical problem to be solved by the present invention is that, in most existing pyrolysis gasification furnaces, garbage starts to ignite in the first combustion chamber to produce harmful gases, and the harmful gases can only burn when the temperature reaches about 650°C in the second combustion chamber. Since the space of the second combustion chamber is large, it takes a long time to raise the temperature of the second combustion chamber to about 650°C. In view of the above-mentioned defects of the existing technology, a pyrolysis gasification furnace is provided.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A pyrolysis gasification furnace is constructed, with an incinerator main body. A first combustion chamber is provided in the incinerator main body. A feeding device connected to the first combustion chamber is provided on the top of the incinerator main body. A connecting flue is also provided on the top of the incinerator main body. The connecting flue connects the first combustion chamber with the second combustion chamber. An ignition combustion device is provided at the connection between the first combustion chamber and the connecting flue, and a rapid ignition device is provided on the side wall of the connecting flue.

[0007] Optionally, a combustion chamber cover is provided between the incinerator body and the feeding device, and a second connecting pipe connecting the feeding device with the first combustion chamber is provided on the combustion chamber cover. A first connecting pipe is provided at the bottom of the feeding device, and a double-roller feeding assembly is provided in the first connecting pipe.

[0008] Optionally, a slag discharge port is provided at the bottom of the first combustion chamber, and a grate is provided in the first combustion chamber for transporting the slag generated in the first combustion chamber to the slag discharge port, and the grate is driven by a driving assembly.

[0009] Optionally, the eccentricity of the grate is 120 mm.

[0010] Optionally, the drive assembly includes two reduction motors symmetrically arranged outside the first combustion chamber.

[0011] Optionally, the feeding device includes a feeding bin, and a water-cooled wall is provided at the bottom of the feeding bin, and the height of the water-cooled wall is greater than the double-roller feeding assembly.

[0012] Optionally, the second combustion chamber includes an upper combustion chamber and a lower combustion chamber arranged from top to bottom, the side wall of the upper combustion chamber is provided with a flue outlet connected to the connecting flue, the inner diameter of the upper combustion chamber is larger than the inner diameter of the lower combustion chamber, the side wall of the lower combustion chamber includes a lower combustion chamber outer wall and a lower combustion chamber inner wall, the side wall of the upper combustion chamber is arranged at the top of the lower combustion chamber, the inner wall of the lower combustion chamber extends upward to the inner side of the side wall of the upper combustion chamber, and a partition is provided between the inner wall of the lower combustion chamber and the side wall of the upper combustion chamber.

[0013] Optionally, the second combustion chamber is in the shape of a hollow cylinder, and the inner diameter of the lower combustion chamber is smaller than the inner diameter of the upper combustion chamber.

[0014] Optionally, a support block for supporting the side wall of the upper combustion chamber is provided on the outer side of the outer wall of the lower combustion chamber.

[0015] Optionally, the inner wall height of the first combustion chamber is 4500 mm

[0016] The beneficial effects of the present invention are:

[0017] The utility model is provided with an incinerator main body, a first combustion chamber is provided in the incinerator main body, a feeding device connected to the first combustion chamber is provided on the top of the incinerator main body, and a connecting flue is also provided on the top of the incinerator main body, the connecting flue connects the first combustion chamber with the second combustion chamber, an ignition combustion device is provided at the connection between the first combustion chamber and the connecting flue, and a rapid ignition device is provided on the side wall of the connecting flue. The utility model is provided with a connecting flue, an ignition combustion device is provided at the connection between the first combustion chamber and the connecting flue, a rapid ignition device is provided on the side wall of the connecting flue, an ignition combustion device is provided at the connection between the first combustion chamber and the connecting flue, and a rapid ignition device is provided in the connecting flue. This dual ignition mechanism can ensure the efficient start-up of the incineration process, and the connecting flue not only realizes the physical connection between the first combustion chamber and the second combustion chamber, but also optimizes the combustion process through its internal structure. The flue gas produced by the combustion enters the second combustion chamber through the connecting flue and further undergoes a combustion reaction, which helps to reduce the emission of harmful substances and improve combustion efficiency. When in use, the garbage begins to burn in the first combustion chamber to produce harmful gases. The ignition combustion device will incinerate the harmful gases. As the amount of harmful gases increases, the gases that are not burned by the ignition combustion device will enter the second combustion chamber through the connecting flue. Since the volume of the second combustion chamber is larger than that of the first combustion chamber, the temperature of the second combustion chamber needs to reach the combustion temperature. Since the volume of the flue space is smaller than that of the first and second combustion chambers, the temperature in the connecting flue is quickly raised to the incineration temperature by arranging a fast ignition device on the side wall of the connecting flue. When the flue is ignited, the temperature of the second combustion chamber is quickly raised to the incineration temperature. While the harmful gases are being burned, the heat generated by the incineration is used to quickly raise the temperature of the second combustion chamber, so that the second combustion chamber is raised to the incineration temperature in a very short time. The second combustion chamber is quickly ignited by matching the fast ignition device and the secondary air of the second combustion chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work:

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a structural schematic diagram of the first combustion chamber of the present utility model.

[0021] Figure 3 It is a structural schematic diagram of the second combustion chamber of the present utility model.

[0022] Figure 4It is a structural schematic diagram of the connecting flue of the present utility model.

[0023] Figure 5 It is a structural schematic diagram of the feeding device of the present utility model.

[0024] The accompanying drawings are:

[0025] 1. Ignition and combustion device; 2. Rapid ignition device; 3. Double-roller feeding assembly; 4. First combustion chamber cover; 5. First combustion chamber; 6. Water-cooled wall; 7. Upper combustion chamber side wall; 8. Partition; 9. Lower combustion chamber outer wall; 10. Lower combustion chamber inner wall; 11. Feeding bin; 12. Drive assembly; 13. Second combustion chamber cover; 14. Connecting flue; 15. First connecting pipe; 16. Second connecting pipe; 17. Second combustion chamber; 18. Support block. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0028] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0030] The present utility model is implemented as follows Figure 1-Figure 5As shown in, it relates to a pyrolysis gasification furnace, an incinerator main body, a first combustion chamber 5 is provided in the incinerator main body, a feeding device connected to the first combustion chamber 5 is provided on the top of the incinerator main body, and a connecting flue 14 is also provided on the top of the incinerator main body. The connecting flue 14 connects the first combustion chamber 5 with the second combustion chamber 17. An ignition combustion device 1 is provided at the connection between the first combustion chamber 5 and the connecting flue 14, and a rapid ignition device 2 is provided on the side wall of the connecting flue 14. A connecting flue 14 is provided, and an ignition combustion device 1 is provided at the connection between the first combustion chamber 5 and the connecting flue 14. A rapid ignition device 2 is provided on the side wall of the connecting flue 14. The ignition combustion device 1 is provided at the connection between the first combustion chamber 5 and the connecting flue 14, and a rapid ignition device 2 is provided in the connecting flue 14. This dual ignition mechanism can ensure the efficient start-up of the incineration process. The connecting flue 14 not only realizes the physical connection between the first combustion chamber 5 and the second combustion chamber 17, but also optimizes the combustion process through its internal structure. The flue gas generated by the combustion enters the second combustion chamber 17 through the connecting flue 14 and further undergoes a combustion reaction, which helps to reduce the emission of harmful substances and improve the combustion efficiency. When in use, the garbage begins to burn in the first combustion chamber 5 to produce harmful gases. The ignition combustion device 1 will burn the harmful gases. As the amount of harmful gases increases, the gases that are not burned by the ignition combustion device 1 will enter the second combustion chamber 17 through the connecting flue 14. Since the volume of the second combustion chamber 17 is larger than that of the first combustion chamber 5, the temperature of the second combustion chamber 17 needs to reach 650°C before combustion. Since the volume of the flue space is smaller than that of the first combustion chamber 5 and the second combustion chamber 17, the temperature of the second combustion chamber 17 needs to reach 650°C before combustion. The volume of the combustion chamber 17 is such that the temperature in the connecting flue 14 is quickly raised to 650°C by arranging a quick ignition device 2 on the side wall of the connecting flue 14 to ignite the flue. While burning harmful gases, the heat generated by the burning is used to quickly raise the temperature of the second combustion chamber, so that the temperature of the second combustion chamber is raised to 650°C in a very short time. By matching and adjusting the quick ignition device 2 and the secondary air of the second combustion chamber 17, the second combustion chamber is quickly ignited. The secondary air is hot air sent into the second combustion chamber 17 through a separate channel of the ignition combustion device 1. Optionally, the connecting flue 14 is connected to the first combustion chamber 5 through a second connecting pipe 16.

[0031] See Figure 1-Figure 2In this embodiment, a combustion chamber cover 4 is provided between the incinerator body and the feeding device, and a second connecting pipe 16 (not shown in the figure) is provided on the combustion chamber cover 4 to connect the feeding device with the first combustion chamber 5. A first connecting pipe 15 is provided at the bottom of the feeding device, and a double-roller feeding assembly 3 is provided in the first connecting pipe 15. Furthermore, the staff can place the material to be burned in the feeding device, and the material to be burned falls into the first connecting pipe 15. The material to be burned in the first connecting pipe 15 of the double-roller feeding assembly 3 is evenly transported to the first combustion chamber 5. Optionally, the feeding device includes a feed bin.

[0032] In this embodiment, a slag discharge port is provided at the bottom of the first combustion chamber 5, and a grate is provided in the first combustion chamber 5 for transporting the slag generated in the first combustion chamber 5 to the slag discharge port. The grate is driven by a drive assembly 12. Furthermore, the drive assembly 12 includes two reduction motors symmetrically arranged on the outside of the first combustion chamber 5. On the grate, the garbage passes through the drying zone, the combustion zone and the burnout zone in turn. In the drying zone, the moisture in the garbage is evaporated; in the combustion zone, the garbage burns at high temperature to generate high-temperature flue gas; in the burnout zone, the remaining ash continues to burn and is discharged from the furnace.

[0033] In this embodiment, the eccentricity of the grate is 120 mm, which can reduce the resistance during operation.

[0034] In this embodiment, the feeding device includes a feeding bin 11, and a water-cooled wall 6 is provided at the bottom of the feeding bin 11. The height of the water-cooled wall 6 is greater than the double-roller feeding assembly 3. The water-cooled wall 6 is a semicircular tube extending axially along the feeding bin 11. The semicircular tubes are distributed circumferentially along the feeding bin 11 and are sealedly connected to the side wall of the feeding bin 11 to supply water or steam flow.

[0035] See Figure 1-Figure 4In this embodiment, the second combustion chamber 17 includes an upper combustion chamber and a lower combustion chamber arranged from top to bottom, the side wall of the upper combustion chamber is provided with a flue outlet connected to the connecting flue 14, the inner diameter of the upper combustion chamber is larger than the inner diameter of the lower combustion chamber, the side wall of the lower combustion chamber includes a lower combustion chamber outer wall 9 and a lower combustion chamber inner wall 10, the side wall of the upper combustion chamber is provided at the top of the lower combustion chamber, the inner wall of the lower combustion chamber extends upward to the inner side of the side wall of the upper combustion chamber, a partition 8 is provided between the inner wall of the lower combustion chamber and the side wall of the upper combustion chamber, the upper combustion chamber A second combustion chamber 17 furnace cover 13 is provided at the top of the cavity. Furthermore, the second combustion chamber is hollow cylindrical, and the inner diameter of the lower combustion chamber is smaller than the inner diameter of the upper combustion chamber. Optionally, the inner wall 10 of the lower combustion chamber is a high-temperature resistant lining. When the second combustion chamber is in a high-temperature state, the inner wall 10 of the lower combustion chamber can expand upward freely. Since the inner wall of the lower combustion chamber extends upward to the inner side of the side wall of the upper combustion chamber, damage to the connection with the flue 14 is avoided, and the lifting of the second combustion chamber 17 furnace cover 13 due to the expansion of the high-temperature lining is avoided. Optionally, the partition 8 can be a high-temperature cotton felt.

[0036] In this embodiment, support blocks 18 are provided on the outer side of the outer wall of the lower combustion chamber to support the upper combustion chamber sidewall 7. Specifically, support blocks 18 can effectively distribute the weight of the upper combustion chamber sidewall 7, enhancing its load-bearing capacity and thus preventing deformation or collapse due to excessive weight. In high-temperature environments, the combustion chamber material will generate thermal stress due to thermal expansion and contraction. The design of support blocks 18 helps to resist this thermal stress and maintain the stability of the combustion chamber structure.

[0037] In this embodiment, the inner wall height of the first combustion chamber 5 is 4500 mm, which helps to fully mix the fuel and air in the combustion chamber, thereby improving the combustion efficiency.

[0038] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this utility model.

Claims

1. A pyrolysis gasification furnace, characterized in that: include: An incinerator body is provided with a first combustion chamber (5) in the incinerator body, a feeding device connected to the first combustion chamber (5) is provided on the top of the incinerator body, a connecting flue (14) is also provided on the top of the incinerator body, the connecting flue (14) connects the first combustion chamber (5) with a second combustion chamber (17), an ignition combustion device (1) is provided at the connection between the first combustion chamber (5) and the connecting flue (14), and a rapid ignition device (2) is provided on the side wall of the connecting flue (14).

2. A pyrolysis gasification furnace according to claim 1, characterized in that: A combustion chamber cover (4) is provided between the incinerator body and the feeding device, a second connecting pipe (16) for connecting the feeding device with the first combustion chamber (5) is provided on the combustion chamber cover (4), a first connecting pipe (15) is provided at the bottom of the feeding device, and a double-roller feeding assembly (3) is provided in the first connecting pipe (15).

3. The pyrolysis gasification furnace according to claim 1, characterized in that: A slag discharge port is provided at the bottom of the first combustion chamber (5), and a grate is provided in the first combustion chamber (5) for conveying slag generated in the first combustion chamber (5) to the slag discharge port, and the grate is driven by a driving assembly (12).

4. A pyrolysis gasification furnace according to claim 3, characterized in that: The eccentricity of the grate is 120 mm.

5. The pyrolysis gasification furnace according to claim 3, characterized in that: The driving assembly (12) comprises two reduction motors symmetrically arranged outside the first combustion chamber (5).

6. The pyrolysis gasification furnace according to claim 2, characterized in that: The feeding device comprises a feeding bin (11), the bottom of which is provided with a water-cooled wall (6), the height of the water-cooled wall (6) being greater than that of the double-roller feeding assembly (3).

7. The pyrolysis gasification furnace according to claim 1, characterized in that: The second combustion chamber (17) includes an upper combustion chamber and a lower combustion chamber arranged from top to bottom, the side wall of the upper combustion chamber is provided with a flue outlet connected to the connecting flue (14), the inner diameter of the upper combustion chamber is larger than the inner diameter of the lower combustion chamber, the side wall of the lower combustion chamber includes a lower combustion chamber outer wall (9) and a lower combustion chamber inner wall (10), the side wall of the upper combustion chamber is arranged at the top of the lower combustion chamber, the inner wall of the lower combustion chamber extends upward to the inner side of the side wall of the upper combustion chamber, and a partition (8) is provided between the inner wall of the lower combustion chamber and the side wall of the upper combustion chamber.

8. The pyrolysis gasification furnace according to claim 7, characterized in that: The second combustion chamber is in the shape of a hollow cylinder, and the inner diameter of the lower combustion chamber is smaller than the inner diameter of the upper combustion chamber.

9. The pyrolysis gasification furnace according to claim 7, characterized in that: A support block (18) for supporting the side wall (7) of the upper combustion chamber is provided on the outer side of the outer wall of the lower combustion chamber.

10. The pyrolysis gasification furnace according to claim 1, characterized in that: The inner wall height of the first combustion chamber (5) is 4500 mm.

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