Garbage incinerator system with turbulence cooling and coke condensing functions

Abstract

The invention discloses a garbage incinerator system with a turbulent flow cooling and coking function, which belongs to the field of garbage incinerators and is characterized in that cooling air is blown out in a direct blowing manner or at a certain angle, a power fluidization field is formed between a front arch of a furnace wall and a rear arch of the furnace wall, and when molten ash falls into the power fluidization field, the molten ash is cooled and disturbed, so that the molten ash is formed. After running for a period of time, the high-speed fan feeds cooling air to the inner wall surfaces of the furnace wall front arch and the furnace wall rear arch in a high-flow and high-flow-speed manner in a high-pressure air supply manner, so that the penetrating power and the injection speed of the cooling air are improved, and the cooling effect is improved; the furnace wall rear arch and the inner wall of the furnace wall front arch are subjected to blowing injection, coking particle aggregation or later caking is prevented, the phenomena of bridging of the front arch and the rear arch and coke block falling are avoided, meanwhile, the probability that diesel oil needs to be used for auxiliary combustion and workers actively conduct coke removal is reduced, the use cost is saved, and the use safety is improved.

Description

Technical Field

[0001] The present invention relates to the field of waste incinerators, and more specifically, to a waste incinerator system with a turbulent cooling and coking condensation function. Background Art

[0002] After the waste incinerator has been in operation for a long time, coking is likely to occur at the front and rear arches of the boiler. In the most serious cases, bridging will occur at the front and rear, posing a great safety hazard to the normal operation of the boiler. In particular, the front arch is the most prone to coking and often drops coke. To avoid this situation, generally, diesel nozzles are installed in the secondary combustion chamber of the boiler. By injecting diesel and igniting it, the coke formed at the front and rear arches is combusted for the second time, and then personnel are organized to remove the coke. This method of dealing with coking not only requires a large amount of diesel for auxiliary combustion, increasing the operating cost, but also organizing personnel to remove the coke undoubtedly increases the probability of accidents and is relatively dangerous. Therefore, we propose a waste incinerator system with a turbulent cooling and coking condensation function to solve the above problems. Summary of the Invention

[0003] 1. Technical Problems to be Solved

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a waste incinerator system with a turbulent cooling and coking condensation function. By installing a number of nozzle mechanisms on the front arch and rear arch of the furnace wall in the reversing flue of the incinerator, and connecting the interface sections of the number of nozzle mechanisms to a high-speed fan through an air supply pipe in the later stage, the high-speed fan can first send cooling air to the inner wall surfaces of the front arch and rear arch of the furnace wall in a large flow and low speed in the form of low-pressure air supply, and according to the angles at which the nozzle mechanisms are installed on the front arch and rear arch of the furnace wall, the cooling air is blown out in a direct blowing manner or at a certain angle, forming a dynamic fluidization field between the front arch and rear arch of the furnace wall. When the molten ash material falls into this dynamic fluidization field, it is cooled and disturbed, so that the molten ash material is cooled into solid particles, and the ash material is not easily adhered and not easily coked into blocks. After running for a period of time, then the high-speed fan sends cooling air to the inner wall surfaces of the front arch and rear arch of the furnace wall in a larger flow and high velocity in the form of high-pressure air supply, improving the penetration and shooting speed of the cooling air, blowing and shooting the inner walls of the rear arch and front arch of the furnace wall, preventing the accumulation or later caking of coking particles, avoiding the phenomena of bridging and coke block dropping at the front and rear arches, and at the same time reducing the probability of using diesel for auxiliary combustion and personnel actively removing coke, saving the use cost and improving the safety during use.

[0005] 2. Technical Solutions

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A waste incinerator system with a turbulent cooling and coking function, comprising a hopper part, a furnace part and a secondary combustion chamber. The hopper part is connected to the furnace part through a feeding pipe part. The furnace part is connected to the secondary combustion chamber through a reversing flue, and a front furnace wall arch and a rear furnace wall arch are respectively arranged on both sides of the reversing flue.

[0008] Mounting plates one and two are respectively attached to the outer walls of the front furnace wall arch and the rear furnace wall arch. A number of internal thread mounting holes one are equidistantly arranged on both the mounting plate one and the mounting plate two. At positions corresponding to the internal thread mounting holes one, a number of internal thread mounting holes two are opened on the front furnace wall arch and the rear furnace wall arch.

[0009] A number of spray head mechanisms are arranged inside the internal thread mounting holes one. The spray head mechanism includes a bolt section threadedly connected between the internal thread mounting hole one and the internal thread mounting hole two at the corresponding position. The two ends of the bolt section are respectively fixedly connected with an interface section and a first spray pipe section. A low-pressure air through channel is opened inside the bolt section, and a conical narrowing part is arranged on the low-pressure air through channel at the connection between the interface section and the bolt section.

[0010] Furthermore, an installation sleeve is fixedly installed inside the low-pressure air through channel on one side of the conical narrowing part. A pipe seat is fixedly welded to the inner wall of the installation sleeve through a group of connecting pieces. A high-pressure spray pipe is fixedly installed inside the pipe seat, and the two ends of the high-pressure spray pipe are respectively fixedly connected with an anti-disconnection end and a spraying end. A high-pressure air through channel is opened inside the high-pressure spray pipe. A number of inclined spray through channels are opened inside the spraying end, and all the inclined spray through channels are communicated with the inside of the high-pressure air through channel. A conical plug is sleeved on the high-pressure spray pipe at the position of the conical narrowing part. The outer wall structure of the conical plug is fitted with the inner wall structure of the conical narrowing part. A support spring is sleeved on the high-pressure spray pipe between the conical plug and the pipe seat, and the two ends of the support spring are respectively in contact with one side of the conical plug and one side of the pipe seat.

[0011] Furthermore, the outer shape structures of the mounting plate one and the mounting plate two are respectively adapted to the outer shape structures of the front furnace wall arch and the rear furnace wall arch. The internal thread mounting holes one on the mounting plate one and the internal thread mounting holes one on the mounting plate two are arranged in a staggered manner.

[0012] Furthermore, the connection part between one end of the first spray pipe section and the inner wall of the front furnace wall arch or the inner wall of the rear furnace wall arch is a planar structure. The end of the spraying end is a hemispherical structure, and the outer wall diameter of the end of the spraying end is equal to the inner wall diameter of the end of the low-pressure air through channel.

[0013] Furthermore, the cross section of the conical plug is in a funnel-shaped structure.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the advantages of the present invention are as follows:

[0016] In this solution, by installing a number of nozzle mechanisms on both the front arch and the rear arch of the furnace wall in the reversing flue of the incinerator, and connecting the interface sections of the number of nozzle mechanisms to a high-speed fan through an air supply pipe in the later stage, the high-speed fan can first send cooling air with a large flow rate and a low speed to the inner wall surfaces of the front arch and the rear arch of the furnace wall in the form of low-pressure air supply, and according to the angles at which the nozzle mechanisms are installed on the front arch and the rear arch of the furnace wall, the cooling air is blown out in a direct blowing manner or at a certain angle, forming a dynamic fluidization field between the front arch and the rear arch of the furnace wall. When the molten ash material falls into this dynamic fluidization field, it is cooled and disturbed, so that the molten ash material is cooled into solid particles. The ash material is not easy to adhere and is not easy to coke and form lumps. After operating for a period of time, then the high-speed fan sends cooling air with a larger flow rate and a high flow velocity to the inner wall surfaces of the front arch and the rear arch of the furnace wall in the form of high-pressure air supply, improving the penetration and shooting speed of the cooling air, blowing and shooting the inner walls of the rear arch and the front arch of the furnace wall, preventing the accumulation or later caking of coking particles, avoiding the phenomena of bridging of the front and rear arches and falling of coke lumps, and at the same time reducing the probability of using diesel for auxiliary combustion and manual coke breaking, saving the use cost and improving the safety during use. Brief description of the drawings

[0017] Figure 1 It is a schematic diagram of the structural distribution of the hopper part, the furnace chamber part and the secondary combustion chamber of the present invention;

[0018] Figure 2 Of the present invention Figure 1 Schematic diagram of the structure of a partial area;

[0019] Figure 3 Of the present invention Figure 1 Enlarged schematic diagram of the structure at A;

[0020] Figure 4 Schematic diagram of the overall structure of the nozzle mechanism of the present invention;

[0021] Figure 5 Of the present invention Figure 4 Schematic diagram of the structure of a partial area.

[0022] Explanation of the reference numerals in the drawings:

[0023] 1. Hopper part; 2. Furnace chamber part; 3. Secondary combustion chamber; 4. Feeding pipe part; 5. Reversing flue; 501. Front arch of the furnace wall; 5011. Second internal thread mounting hole; 502. Rear arch of the furnace wall; 6. First mounting plate; 601. First internal thread mounting hole; 7. Second mounting plate;

[0024] 8. Sprinkler mechanism; 9. Bolt section; 901. Low-pressure air through-channel; 902. Conical narrowing section; 10. Interface section; 11. First section of the spray pipe; 12. Installation sleeve; 1201. Connecting piece; 1202. Pipe seat; 13. High-pressure spray pipe; 1301. Anti-disengagement end; 1302. Spraying end; 1303. High-pressure air through-channel; 1304. Oblique spray through-channel; 14. Conical plug; 15. Support spring. Detailed implementation mode

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment 1:

[0027] Please refer to Figures 1-5 , a waste incinerator system with a turbulent cooling and coking condensation function, including a hopper part 1, a furnace part 2 and a secondary combustion chamber 3, characterized in that: the hopper part 1 is connected to the furnace part 2 through a feeding pipe part 4, the furnace part 2 is connected to the secondary combustion chamber 3 through a reversing flue 5, and a front furnace wall arch 501 and a rear furnace wall arch 502 are respectively arranged on both sides of the reversing flue 5;

[0028] Installation plates one 6 and two 7 are respectively attached to the outer walls of the front furnace wall arch 501 and the rear furnace wall arch 502. A number of internal thread installation holes one 601 are equidistantly arranged on both the installation plate one 6 and the installation plate two 7. A number of internal thread installation holes two 5011 are opened on the front furnace wall arch 501 and the rear furnace wall arch 502 at positions corresponding to the internal thread installation holes one 601;

[0029] A number of sprinkler mechanisms 8 are arranged inside the internal thread installation holes one 601. The sprinkler mechanism 8 includes a bolt section 9 threadedly connected between the internal thread installation holes one 601 and the internal thread installation holes two 5011 at corresponding positions. Both ends of the bolt section 9 are respectively fixedly connected with an interface section 10 and a first section of the spray pipe 11. A low-pressure air through-channel 901 is opened inside the bolt section 9. A conical narrowing section 902 is arranged on the low-pressure air through-channel 901 at the connection between the interface section 10 and the bolt section 9;

[0030] An installation sleeve 12 is fixedly installed inside a low-pressure air penetration channel 901 on one side of a conical narrowing part 902. A pipe seat 1202 is fixedly welded to the inner wall of the installation sleeve 12 through a group of connecting pieces 1201. A high-pressure nozzle 13 is fixedly installed inside the pipe seat 1202. Both ends of the high-pressure nozzle 13 are fixedly connected with an anti-disengagement end 1301 and a spraying end 1302 respectively. A high-pressure air penetration channel 1303 is opened inside the high-pressure nozzle 13. A plurality of inclined spraying penetration channels 1304 are opened inside the spraying end 1302. The plurality of inclined spraying penetration channels 1304 are all communicated with the inside of the high-pressure air penetration channel 1303. A conical plug 14 is sleeved on the high-pressure nozzle 13 at the position of the conical narrowing part 902. The outer wall structure of the conical plug 14 fits the inner wall structure of the conical narrowing part 902. A support spring 15 is sleeved on the high-pressure nozzle 13 between the conical plug 14 and the pipe seat 1202. Both ends of the support spring 15 are in contact with one side of the conical plug 14 and one side of the pipe seat 1202 respectively.

[0031] The working principle of this waste incinerator system with a turbulent cooling and coke condensation function is as follows:

[0032] First, use a corresponding-diameter air supply pipe to connect the interface sections 10 of a plurality of nozzle mechanisms 8 to an air box. Then, connect the air outlet of a high-speed fan to the air box through a connecting pipe, so that the high-speed fan can pressurize and supply cooling air to the air box, and then supply cooling air to a plurality of nozzle mechanisms 8.

[0033] When the garbage is burned inside the furnace section 2, the high-temperature flue gas generated by the combustion, mixed with a large amount of ash, will be drawn upward along the reversing flue 5 and the secondary combustion chamber 3 (the specific internal structure and detailed principle of the garbage incinerator are known public technologies, so no detailed description will be given here). When the high-temperature flue gas mixed with a large amount of ash rises to the reversing flue 5, at this time, the high-speed fan first sends cooling air into the air box in the form of a smaller pressure air supply. When the cooling air reaches the interface section 10 of the nozzle mechanism 8, since the air supply pressure is not enough to push the conical plug 14 towards the side of the pipe seat 1202, so at this time the cooling air passes through the low-pressure air through-channel 901 and passes through the pipe seat 1202 and is blown into the reversing flue 5 from the end of the first section of the nozzle 11, and at the same time, the high-pressure air in the high-pressure nozzle 13 passes through the high-pressure air through-channel 1303 and a number of inclined spray through-channels 1304 and is blown into the reversing flue 5. At this time, since the channel diameter of the first section of the nozzle 11 is relatively large, the cooling air can only blow the ash at a relatively low pressure and low speed on the surfaces of the front arch 501 and the rear arch 502 of the furnace wall, and according to the angles at which the nozzle mechanism 8 is installed on the front arch 501 and the rear arch 502 of the furnace wall, the cooling air is blown out in a direct blowing or at a certain angle, forming a dynamic fluidization field between the front arch 501 and the rear arch 502 of the furnace wall. When the molten ash falls into this dynamic fluidization field, it is cooled and disturbed, so that the molten ash is cooled into solid particles, and the ash is not easy to adhere and is not easy to coke and form lumps;

[0034] After running for a period of time, then the high-speed fan sends cooling air into the air box in the form of a higher pressure air supply. When the cooling air reaches the interface section 10 of the nozzle mechanism 8, at this time, due to the relatively large air supply pressure, the conical plug 14 is pushed towards the side of the pipe seat 1202 and blocks the low-pressure air through-channel 901 at the position of the conical narrowing part 902. At this time, the cooling air can only flow through the high-pressure air through-channel 1303 inside the high-pressure nozzle 13 and finally is blown into the reversing flue 5 through a number of inclined spray through-channels 1304 inside the injection end 1302. At this time, since the channel diameters of the high-pressure air through-channel 1303 and a number of inclined spray through-channels 1304 are relatively small, the cooling air can be sent into the cooling air on the inner wall surfaces of the front arch 501 and the rear arch 502 of the furnace wall with a larger flow rate and a higher flow velocity, improving the penetration and shooting speed of the cooling air, blowing and shooting the inner walls of the rear arch 502 and the front arch 501 of the furnace wall, preventing the accumulation or later caking of coking particles, avoiding the phenomena of bridging of the front and rear arches and falling of coke lumps. After running for a period of time in the form of a higher pressure air supply by the high-speed fan, it is then switched back to the form of a smaller pressure air supply to send cooling air into the air box, and so on.

[0035] Embodiment 2:

[0036] In view of the above Embodiment 1, a further description is made. Refer to Figure 4 and Figure 5, the outer shapes of the first mounting plate 6 and the second mounting plate 7 are respectively adapted to the outer shapes of the front arch 501 and the rear arch 502 of the furnace wall. The inner threaded mounting holes 601 on the first mounting plate 6 and the inner threaded mounting holes 601 on the second mounting plate 7 are arranged in a staggered manner. Through this staggered mounting structure, it can be avoided that the spray head mechanism 8 on the front arch 501 and the rear arch 502 of the furnace wall faces the blowing directly, thus avoiding affecting the flow rate, shooting rate and penetration power of the air blown out by the spray head mechanism 8;

[0037] One end of the first section of the spray pipe 11 is in a planar structure at the connection with the inner wall of the front arch 501 or the inner wall of the rear arch 502 of the furnace wall, which can make the connection position more flat and reduce the phenomenon of coking and coke hanging;

[0038] The end of the spraying end 1302 is in a hemispherical structure, and the outer diameter of the end of the spraying end 1302 is equal to the inner diameter of the end of the low-pressure air through-channel 901. The cross-section of the conical plug 14 is in a funnel-shaped structure. First, the setting of the spraying end 1302 facilitates the cooling air to be blown out from the mouth of the first section of the spray pipe 11 and blow into the reversing flue 5 in an umbrella shape, increasing the contact area with the high-temperature flue gas and ash material, which is beneficial to the ash material near the mouth of the first section of the spray pipe 11 to quickly cool down into solid particles. Secondly, the end of the spraying end 1302 is in a hemispherical structure, which is convenient for a number of inclined spray through-channels 1304 to be opened at an inclined angle. The setting of the support spring 15 facilitates the automatic reset of the conical plug 14 when the cooling air is sent into the air box in a smaller-pressure blowing form in the later stage. The anti-disengagement end 1301 can prevent the conical plug 14 from falling off during automatic reset.

[0039] The above is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and its improved concept of the present invention, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present invention.

Claims

1. A waste incinerator system with a function of turbulent cooling and coking removal, comprising a hopper part (1), a furnace part (2) and a secondary combustion chamber (3), characterized in that: The hopper part (1) is connected to the furnace part (2) through a blanking pipe part (4), and the furnace part (2) is connected to the secondary combustion chamber (3) through a reversing flue (5). The reversing flue (5) is provided with a front furnace wall arch (501) and a rear furnace wall arch (502) on both sides respectively; The outer walls of the front furnace wall arch (501) and the rear furnace wall arch (502) are respectively attached with a first mounting plate (6) and a second mounting plate (7). A number of first internal thread mounting holes (601) are equidistantly arranged on both the first mounting plate (6) and the second mounting plate (7). A number of second internal thread mounting holes (5011) are arranged on the front furnace wall arch (501) and the rear furnace wall arch (502) at positions corresponding to the first internal thread mounting holes (601); A spray head mechanism (8) is arranged inside a number of the first internal thread mounting holes (601). The spray head mechanism (8) includes a bolt section (9) threadedly connected between the first internal thread mounting holes (601) and the second internal thread mounting holes (5011) at corresponding positions. Two ends of the bolt section (9) are respectively fixedly connected with an interface section (10) and a first spray pipe section (11). A low-pressure air through channel (901) is arranged inside the bolt section (9). A conical narrowing part (902) is arranged on the low-pressure air through channel (901) at the connection position between the interface section (10) and the bolt section (9).

2. The waste incinerator system with a turbulent flow cooling and coking function according to claim 1, wherein: An installation sleeve (12) is fixedly installed inside the low-pressure air through channel (901) on one side of the conical narrowing part (902). A pipe seat (1202) is fixedly welded to the inner wall of the installation sleeve (12) through a group of connecting pieces (1201). A high-pressure spray pipe (13) is fixedly installed inside the pipe seat (1202). Two ends of the high-pressure spray pipe (13) are respectively fixedly connected with an anti-disconnection end (1301) and a spraying end (1302). A high-pressure air through channel (1303) is arranged inside the high-pressure spray pipe (13). A number of inclined spray through channels (1304) are arranged inside the spraying end (1302). A number of the inclined spray through channels (1304) are all communicated with the inside of the high-pressure air through channel (1303). A conical plug (14) is sleeved on the high-pressure spray pipe (13) at the position of the conical narrowing part (902). The outer wall structure of the conical plug (14) is fitted with the inner wall structure of the conical narrowing part (902). A support spring (15) is sleeved on the high-pressure spray pipe (13) between the conical plug (14) and the pipe seat (1202). Two ends of the support spring (15) are respectively in contact with one side of the conical plug (14) and one side of the pipe seat (1202).

3. The waste incinerator system with a turbulent flow cooling and coke condensation function according to claim 1, characterized in that: The outer shapes of the first mounting plate (6) and the second mounting plate (7) are respectively adapted to the outer shapes of the front arch (501) and the rear arch (502) of the furnace wall. The first internal thread mounting holes (601) on the first mounting plate (6) and the first internal thread mounting holes (601) on the second mounting plate (7) are offset from each other.

4. A waste incinerator system with a turbulent cooling and coking function according to claim 2, characterized in that: One end of the first section of the nozzle (11) has a planar structure at the connection with the inner wall of the front arch (501) or the inner wall of the rear arch (502) of the furnace wall. The end of the injection end (1302) has a hemispherical structure, and the outer diameter of the end of the injection end (1302) is equal to the inner diameter of the end of the low-pressure air penetration channel (901).

5. The waste incinerator system with a turbulent flow cooling and coke condensation function according to claim 2, wherein: The conical plug (14) has a funnel-shaped cross-section.

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