Waste incineration fly ash treatment device
By directly crushing fly ash blocks with a crushing device and drying them with high-temperature exhaust gas, the problem of low efficiency and high energy consumption in existing fly ash treatment technologies is solved, and efficient fly ash treatment and calcination are achieved.
Patent Information
- Application Number
- CN202520137596.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-21
AI Technical Summary
In existing methods for treating fly ash from waste incineration, the fly ash slurry needs to be dried at high temperatures after dehydration before it can be granulated, which results in low processing efficiency and high energy consumption.
The fly ash blocks are directly crushed using a crushing device, eliminating the granulation step. The fly ash particles are then heated with high-temperature exhaust gas to evaporate moisture before being directly fed into the boiler for calcination.
It improved fly ash treatment efficiency, reduced energy consumption, and enhanced calcination effect.
Smart Images
Figure CN223875770U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fly ash treatment technical field more specifically, relate to a kind of waste incineration fly ash treatment device. BACKGROUND
[0002] Fly ash after waste incineration recycling is mostly washed, pulp processing, dewatering (extrusion molding), granulation (fly ash is made into granular), calcination, finally through centrifugal equipment is processed into rock wool material, realizes the recycling of fly ash.
[0003] This mode has the following shortcomings: fly ash slurry is extruded and dewatered, and still needs to be made into granular by granulating equipment, and then calcined, but since fly ash slurry still contains moisture after dewatering, high-temperature drying of fly ash is required before granulation to ensure granulation effect, which not only leads to low fly ash treatment efficiency, but also increases energy consumption. UTILITY MODEL CONTENT
[0004] The utility model aims at overcoming the above-mentioned prior art deficiencies, providing a kind of waste incineration fly ash treatment device, fly ash slurry is extruded and dewatered directly into crushing device and crushed, and the fly ash particles after crushing are conveyed into the second conveying device and calcined in the boiler, which effectively improves the processing efficiency of fly ash.
[0005] To achieve the above object, the utility model adopts the following technical scheme: a kind of waste incineration fly ash treatment device, including the first conveying device and the crushing device along the fly ash block conveying direction, the first conveying device is located above the crushing device, the crushing device includes multiple crushing rollers, the fly ash block can be crushed by crushing roller, the second conveying device is arranged below the crushing device, the second conveying device includes conveying barrel, the conveying barrel is provided with feeding cavity, and the fly ash block can be conveyed along the length direction of feeding cavity after crushing.
[0006] Further, the lower part of the crushing device is provided with a discharge port, the discharge port is connected with the feeding end of the feeding cavity through a feeding pipe, and the discharge end of the feeding cavity is connected with a discharge pipe.
[0007] Further, the first valve is installed at the feeding pipe, and the second valve is installed at the discharge pipe.
[0008] Further, a spiral conveying roller is installed in the feeding cavity, which can rotate to convey the crushed fly ash from the feeding pipe to the discharge pipe.
[0009] Further, the second conveying device is provided with a driving mechanism outside, and the driving mechanism can drive the spiral conveying roller to rotate.
[0010] Further, the conveying cylinder is sleeved with a sleeve, and a ventilation cavity is arranged between the sleeve and the conveying cylinder.
[0011] Further, a helical rib is arranged on the inner wall of the sleeve, the helical rib abuts against the outer wall of the conveying cylinder to form a helical ventilation cavity, the air inlet is located at the head end of the helical ventilation cavity, and the air outlet is located at the tail end of the helical ventilation cavity.
[0012] Further, the conveying cylinder is sleeved with a sleeve, and a ventilation cavity is arranged between the sleeve and the conveying cylinder.
[0013] In summary, the utility model has the following beneficial effects:
[0014] After the fly ash is washed, pulped and extruded, the fly ash is formed into blocky fly ash blocks, the fly ash blocks are conveyed into the crushing device through the first conveying device, the fly ash blocks are directly crushed through the crushing roller, the crushing device is used to replace the granulating device in the prior art, so that the fly ash blocks do not need to be heated and dried and then granulated, the processing efficiency of the fly ash is effectively improved, and energy consumption is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0015] Fig. 1 It is a structural schematic view of the embodiment;
[0016] Fig. 2 It is a structural schematic view of the second conveying device.
[0017] Mark: 1, first conveying device; 2, crushing device; 21, crushing roller; 22, discharge port; 3, second conveying device; 4, conveying cylinder; 41, feeding cavity; 42, steam outlet; 43, screen; 5, spiral conveying roller; 51, driving mechanism; 6, feeding pipe; 61, first valve; 7, discharge pipe; 71, second valve; 8, sleeve; 81, ventilation cavity; 82, helical rib; 83, air inlet; 84, air outlet; 9, fly ash block. DETAILED DESCRIPTION
[0018] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0019] For example, Figs. 1-2As shown, the embodiment discloses a waste incineration fly ash treatment device, which comprises a first conveying device 1 and a crushing device 2 arranged along the conveying direction of the fly ash block 9, the discharging end of the first conveying device 1 is located above the crushing device 2, the first conveying device 1 is a conveying belt for conveying the fly ash block 9 into the crushing device 2, and the crushing device 2 comprises a plurality of crushing rollers 21, the fly ash block 9 can be crushed by the crushing rollers 21, the crushing device 2 is a commonly used device for crushing materials, which is a prior art, so its specific structure is not described in this specification, and the fly ash block 9 can be crushed and scattered by the cooperation of the crushing rollers 21 to form small particles.
[0020] After water washing, pulping and extrusion molding, the fly ash forms a block-shaped fly ash block 9, which is conveyed into the crushing device 2 by the first conveying device 1, and the fly ash block 9 is directly crushed by the crushing rollers 21, and the crushing device 2 replaces the granulating device in the prior art, so that the fly ash block 9 does not need to be heated and dried before granulation, effectively improving the processing efficiency of the fly ash and reducing energy consumption.
[0021] A second conveying device 3 is arranged below the crushing device 2, the second conveying device 3 comprises a conveying cylinder 4, the conveying cylinder 4 is provided with a feeding cavity 41, the lower part of the crushing device 2 is provided with a discharging port 22, the discharging port 22 is connected with the feeding end of the feeding cavity 41 through a feeding pipe 6, the discharging end of the feeding cavity 41 is connected with a discharging pipe 7, the crushed fly ash block 9 can be conveyed along the length direction of the feeding cavity 41, a spiral conveying roller 5 is installed in the feeding cavity 41, the spiral conveying roller 5 can rotate to convey the crushed fly ash from the feeding pipe 6 to the discharging pipe 7, and the fly ash block 9 can enter the feeding cavity 41 through the feeding pipe 6 after being crushed, and then the fly ash can be conveyed in the feeding cavity 41 by the spiral conveying roller 5, the fly ash discharged from the discharging pipe 7 can enter the boiler for calcination, and the conveying and feeding mode can realize the gradual feeding of the fly ash in the boiler, effectively reducing the accumulation of fly ash in the boiler, and being conducive to improving the calcination effect of the fly ash.
[0022] A driving mechanism 51 is arranged outside the second conveying device 3, the driving mechanism 51 can drive the spiral conveying roller 5 to rotate, the driving mechanism 51 is preferably a stepless speed regulation motor, and the driving mechanism 51 is a prior art.
[0023] The conveying cylinder 4 is sleeved with a sleeve 8, and a ventilation cavity 81 is arranged between the sleeve 8 and the conveying cylinder 4. The sleeve 8 comprises an air inlet 83 and an air outlet 84, and the air inlet 83 and the air outlet 84 are communicated with the ventilation cavity 81. When the fly ash is calcined in the boiler, a large amount of high-temperature waste gas is generated. The air inlet 83 is connected with the exhaust pipe of the boiler, so that part of the high-temperature waste gas can enter the ventilation cavity 81 from the air inlet 83, thereby heating the fly ash in the feeding cavity 41. Not only the temperature of the fly ash in the feeding cavity 41 can be increased, but also the moisture in the fly ash can be evaporated when the fly ash is heated by the high-temperature waste gas, so that the drying of the fly ash is realized. After the fly ash is heated and dried, the fly ash is calcined in the boiler again, so that the calcination effect of the fly ash can be greatly improved, and the energy consumption can be reduced.
[0024] The first valve 61 is arranged at the feeding pipe 6, and the second valve 71 is arranged at the discharging pipe 7. By arranging the first valve 61 and the second valve 71, the opening and closing of the feeding pipe 6 and the discharging pipe 7 can be realized, so that the fly ash in the feeding cavity 41 can be adjusted.
[0025] When it is necessary to increase the heating time of the fly ash, the first valve 61 and the second valve 71 are closed, and the driving mechanism 51 drives the spiral conveying roller 5 to rotate in the forward and reverse directions, so that the fly ash in the feeding cavity 41 is reciprocatingly conveyed, the heating time of the fly ash is increased, and the heating and drying effect of the fly ash is improved.
[0026] Spiral ribs 82 are arranged on the inner wall of the sleeve 8, and the end portions of the spiral ribs 82 abut against the outer wall of the conveying cylinder 4, so as to form a spiral ventilation cavity 81. The air inlet 83 is located at the head end of the spiral ventilation cavity 81, and the air outlet 84 is located at the tail end of the spiral ventilation cavity 81. By arranging the spiral ribs 82, the spiral conveying of the high-temperature waste gas can be realized, the transmission time of the high-temperature waste gas in the ventilation cavity 81 is increased, and the heating effect of the fly ash is improved.
[0027] The conveying cylinder 4 is connected with an exhaust port 42, the exhaust port 42 is communicated with the feeding cavity 41, the upper end of the exhaust port 42 exceeds the outer wall of the sleeve 8, and a blocking net 43 is arranged on the upper portion of the exhaust port 42. When the fly ash is heated in the feeding cavity 41, the moisture in the fly ash is evaporated, and the evaporated water vapor is discharged from the blocking net 43 above the exhaust port 42.
[0028] The preferred embodiments of the present application are described above, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solutions falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principles of the present application shall also be considered as the protection scope of the present application.
Claims
1. A waste incineration fly ash treatment device characterized by comprising: Including first conveying device (1) and crushing device (2) arranged along the conveying direction of fly ash block (9), the lower end of first conveying device (1) is located above crushing device (2), the crushing device (2) comprises a plurality of crushing rollers (21), the fly ash block (9) can be crushed by crushing roller (21), the second conveying device (3) is arranged below the crushing device (2), the second conveying device (3) comprises a conveying cylinder (4), the conveying cylinder (4) is provided with a feeding cavity (41), the fly ash block (9) can be conveyed along the length direction of feeding cavity (41) after being crushed.
2. The waste incineration fly ash treatment device according to claim 1, characterized in that, The lower part of the crushing device (2) is provided with a discharge port (22), the discharge port (22) is connected with the feeding end of the feeding cavity (41) through the feeding pipe (6), and the discharge end of the feeding cavity (41) is connected with the discharge pipe (7).
3. The device for treating waste incineration fly ash according to claim 2, characterized in that, The first valve (61) is installed at the feeding pipe (6), and the second valve (71) is installed at the discharge pipe (7).
4. The device for treating waste incineration fly ash according to claim 2, characterized in that, The feeding cavity (41) is provided with a spiral conveying roller (5), which can rotate to convey the crushed fly ash from the feeding pipe (6) to the discharge pipe (7).
5. A waste incineration fly ash treatment apparatus according to claim 4, characterized by, The outer side of the second conveying device (3) is provided with a driving mechanism (51), which can drive the spiral conveying roller (5) to rotate.
6. The device for treating waste incineration fly ash according to claim 2, characterized in that, The conveying cylinder (4) is provided with a sleeve (8), and the sleeve (8) and the conveying cylinder (4) are provided with a ventilation cavity (81), the sleeve (8) comprises an air inlet (83) and an air outlet (84), and the air inlet (83) and the air outlet (84) are communicated with the ventilation cavity (81).
7. A waste incineration fly ash treatment apparatus according to claim 6, characterized by The inner wall of the sleeve (8) is provided with a spiral rib (82), the end of the spiral rib (82) abuts against the outer wall of the conveying cylinder (4) to form a spiral ventilation cavity (81), the air inlet (83) is located at the head end of the spiral ventilation cavity (81), and the air outlet (84) is located at the tail end of the spiral ventilation cavity (81).
8. The waste incineration fly ash treatment device according to claim 6, characterized in that, The upper part of the conveying cylinder (4) is connected with a steam exhaust port (42), the steam exhaust port (42) is communicated with the feeding cavity (41), the upper end of the steam exhaust port (42) exceeds the outer wall of the sleeve (8), and the steam exhaust port (42) is provided with a screen (43).