Frame structure of purified ash incineration fluidized bed furnace
By improving the frame structure of the fluidized bed furnace using rectangular tubes and refractory materials, the problems of high cost and safety hazards of the fluidized bed furnace were solved, achieving cost reduction and safety improvement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-03-27
AI Technical Summary
Existing fluidized bed furnaces have high costs, bulging exterior walls, air leakage due to misaligned arch joints, and positive pressure risks, leading to safety hazards.
Rectangular tubes are used instead of channel steel as the frame structure material, and combined with refractory materials and expanded perlite filling to enhance the structural stability and sealing of the furnace body.
It reduces construction costs, prevents bulging of exterior walls and air leakage due to misaligned arches, reduces the risk of burns to personnel, and improves safety.
Smart Images
Figure CN224050386U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a structure technical field of fluidized bed furnace, concretely relates to a purification ash incineration fluidized bed furnace frame structure. BACKGROUND
[0002] Fluidized bed furnace needs to run continuously, mainly utilizes dry pulverized coal and purification ash mixed combustion to provide heat and carbon material to drying kiln, and the present fluidized bed furnace outer wall deformation, inner wall bulge, furnace door upper crack collapse phenomenon, causes the safe hidden danger to production, the original fluidized bed furnace frame uses channel steel + 220*79*9mm, 4292.03 yuan / ton, and the cost is expensive.
[0003] Fluidized bed furnace makes solid raw material particles (pulverized coal) continuously calcine under fluidization, because solid particles suspend in airflow, purification ash and solid phase contact area are big, so heating decomposition speed is fast, thermal efficiency is high, calcination temperature is high, the outer wall of purification ash incineration fluidized bed furnace bulge in the process, arch top misaligned seam air leakage, and the personnel burn risk exists in fluidized bed furnace positive pressure. SUMMARY
[0004] The utility model discloses a purification ash incineration fluidized bed furnace frame structure, solves the problem that the cost of fluidized bed furnace is expensive, the outer wall bulge in the process of purification ash incineration, arch top misaligned seam air leakage, and the personnel burn risk exists in fluidized bed furnace positive pressure.
[0005] To achieve the above object, the utility model provides the following technical scheme:
[0006] A purification ash incineration fluidized bed furnace frame structure, including outer wall steel structure (1), furnace body (2), fan (3), the furnace body (2) presents as cuboid, the outer surface of furnace body (2) is equipped with outer wall steel structure (1), the lower part of furnace body (2) is equipped with fan (3),
[0007] The outer wall steel structure (1) includes four corner columns (10), steel structure frame (11), corner reinforcing angle steel (12), the four corner columns (10) are arranged in the four corners of furnace body (2), the four corner columns (10) between are welded with steel structure frame (11), the part through corner reinforcing angle steel (12) welding fixed of four corner columns (10) and steel structure frame (11) corner is reinforced.
[0008] The furnace body (2) comprises a red brick wall (20), a refractory brick wall (21), expanded perlite (22), a refractory arch (23), a construction column (24), a refractory wall ring beam (25), and the furnace body (2) has an arched hearth inside, the outer layer of the furnace body (2) is the red brick wall (20) on four sides, the inner layer of the furnace body (2) is the refractory brick wall (21) on four sides, the refractory brick wall (21) is provided with the refractory arch (23), the top of the refractory arch (23) is the expanded perlite (22), and the refractory brick wall (21) is provided with the construction column (24) and the refractory wall ring beam (25).
[0009] Further, the red brick wall (20) and the refractory brick wall (21) are provided with a 50-60mm gap, and the 50-60mm gap is filled with the expanded perlite (22).
[0010] Further, the refractory brick wall (21) is outwardly extended by half of a layer of bricks in the height direction every 5-8 layers of bricks.
[0011] Further, four of the construction columns (24) are located at the corners of the refractory brick wall (21), and two are located at the ends of the windproof wall.
[0012] Further, the four-corner column (10) has a material specification of 160*160*8mm, the steel structure frame (11) has a material specification of 160*80*8mm, and the corner reinforcing angle steel (12) has a material specification of 75*75*7mm.
[0013] Further, the refractory brick wall (21) is made of first-grade high-aluminum bricks.
[0014] Further, the fireproof wall slope surface inside the furnace body (2) is cast with 50-60mm-thick rigid wear-resistant corundum castable.
[0015] Further, the refractory arch (23) is 200-220mm-thick rigid wear-resistant corundum castable, the outer side of the refractory arch (23) is made of 40mm*4mm flat iron for lacing, the longitudinal and transverse spacing of the lacing is 320mm and 200mm respectively, the expansion joint on the refractory arch (23) is provided with a rigid wear-resistant corundum plastic jointing material, and the width of the jointing material is not less than 150mm and the thickness is not less than 60mm.
[0016] Further, the construction column (24) and the refractory wall ring beam (25) are made of rigid wear-resistant corundum castable, the main reinforcement of the construction column (24) has a specification of Φ16mm, and the stirrup of the construction column (24) has a specification of Φ10mm.
[0017] The utility model discloses beneficial effect lies in: the present application replaces the channel section steel of frame with rectangular pipe, replaces the material of frame structure, reduces the overall cost, can effectively prevent the bulging of outer wall, the wrong joint air leakage of vault in the process of burning purification ash, reduces the risk of being burned of personnel existing in the positive pressure of boiling furnace.
[0018] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and can be implemented according to the content of the specification, the following preferred embodiments of the utility model are described in detail with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is the structure schematic diagram of the furnace body horizontal section shown in an embodiment of the utility model.
[0020] Figure 2 It is the structure schematic diagram of the furnace body longitudinal section shown in an embodiment of the utility model.
[0021] Figure 3 It is the structure schematic diagram of the furnace body longitudinal external shown in an embodiment of the utility model.
[0022] Figure 4 It is the structure schematic diagram of the furnace body horizontal section shown in an embodiment of the utility model.
[0023] Figure 5 It is the structure schematic diagram of the right side of outer wall steel structure shown in an embodiment of the utility model.
[0024] Figure 6 It is the structure schematic diagram of the front side of outer wall steel structure shown in an embodiment of the utility model.
[0025] Figure 7 It is the structure schematic diagram of the rear side of outer wall steel structure shown in an embodiment of the utility model.
[0026] Figure 8 It is the structure schematic diagram of the top of outer wall steel structure shown in an embodiment of the utility model.
[0027] Mark explanation: 1, outer wall steel structure;2, furnace body;3, fan;10, four corner columns;11, steel structure frame;12, corner reinforcing angle steel;20, red brick wall;21, refractory brick wall;22, expanded perlite;23, refractory vault;24, structural column;25, refractory wall ring beam. DETAILED DESCRIPTION
[0028] The technical solutions of the present application will be described clearly and completely in connection with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.
[0029] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0030] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0031] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as there is no conflict.
[0032] Please refer to Figure 1 The frame structure of the incineration boiling furnace for purifying ash according to an embodiment of the present application comprises an outer wall steel structure 1, a furnace body 2 and a fan 3. The furnace body 2 is in the shape of a cuboid, and the outer surface of the furnace body 2 is provided with the outer wall steel structure 1. The lower part of the furnace body 2 is provided with the fan 3.
[0033] The outer wall steel structure 1 comprises four corner columns 10, a steel structure frame 11 and corner reinforcing angle steels 12. The four corner columns 10 are arranged at the four corners of the furnace body 2. The four corner columns 10 are welded with the steel structure frame 11. The corner parts of the four corner columns 10 and the steel structure frame 11 are welded and fixed by the corner reinforcing angle steels 12.
[0034] The furnace body 2 comprises a red brick wall 20, a refractory brick wall 21, expanded perlite 22, a refractory dome 23, a construction column 24 and a refractory wall ring beam 25, and has an arched hearth inside, wherein the outer layer of the furnace body 2 is the red brick wall 20, the inner layer of the furnace body 2 is the refractory brick wall 21, the refractory brick wall 21 is provided with the refractory dome 23, the top of the refractory dome 23 is the expanded perlite 22, and the refractory brick wall 21 is provided with the construction column 24 and the refractory wall ring beam 25.
[0035] The expanded perlite 22 is filled in the gap of 50-60 mm between the red brick wall 20 and the refractory brick wall 21.
[0036] The refractory brick wall 21 is outwardly extended by half in the height direction every 5-8 layers of bricks.
[0037] The four construction columns 24 are located at the corners of the refractory brick wall 21, and the two construction columns 24 are located at the ends of the windproof wall, the number of the refractory wall ring beam 25 is two, and the refractory wall ring beam 25 is located at the positions with the elevations of 2130 mm and 3040 mm, respectively.
[0038] The material specification of the four-corner column 10 is 160*160*8 mm, the material specification of the steel structure frame 11 is 160*80*8 mm, and the material specification of the corner reinforcing angle steel 12 is 75*75*7 mm.
[0039] The material of the refractory brick wall 21 is high-alumina brick.
[0040] The 50-60 mm thick wear-resistant corundum castable is cast on the slope surface of the fireproof wall inside the furnace body 2.
[0041] The refractory dome 23 is the 200-220 mm thick wear-resistant corundum castable, the 40 mm*4 mm flat iron is used to make the reinforcing bar outside the refractory dome 23, the longitudinal and transverse spacing of the reinforcing bar is 320 mm and 200 mm, respectively, the wear-resistant corundum plastic jointing is used on the expanded joint of the refractory dome 23, and the width and thickness of the jointing are not less than 150 mm and 60 mm, respectively.
[0042] The material used for the construction column 24 and the refractory wall ring beam 25 is the wear-resistant corundum castable, the main reinforcing bar of the construction column 24 has the specification of Φ16 mm, and the stirrup of the construction column 24 has the specification of Φ10 mm and the interval density of 150 mm.
[0043] In conclusion, the frame structure of the purification ash incineration boiling furnace is provided, the channel steel used for the frame is replaced by the rectangular pipe, the material of the frame structure is replaced, the overall cost is reduced, the outer wall bulging, the dome misjointing and the air leakage in the purification ash incineration process can be effectively prevented, and the risk that the personnel is burned in the positive pressure of the boiling furnace is reduced.
[0044] Any technical features in the above-described embodiments can be combined in any manner, and, for the sake of brevity, the foregoing description has not described all possible combinations of the technical features. However, it is contemplated that the scope of the disclosure encompasses all possible combinations of the technical features.
Claims
1. A frame structure for a fluidized bed furnace for purifying ash incineration, characterized in that, Including outer wall steel structure (1), furnace body (2), fan (3); The furnace body (2) presents as cuboid, the outer surface of furnace body (2) is equipped with outer wall steel structure (1), the lower part of furnace body (2) is equipped with fan (3); The outer wall steel structure (1) includes four corner columns (10), steel structure frame (11), corner reinforcing angle steel (12), the four corner columns (10) are arranged at the four corners of the furnace body (2), the steel structure frame (11) is welded between the four corner columns (10), the corner parts of the four corner columns (10) and the steel structure frame (11) are welded and fixed through the corner reinforcing angle steel (12). The furnace body (2) includes red brick wall (20), refractory brick wall (21), expanded perlite (22), refractory vault (23), structural column (24), refractory wall ring beam (25), the furnace body (2) has a hearth with an arch shape, the outer layer of the furnace body (2) four sides are the red brick wall (20), the inner layer of the furnace body (2) four sides are the refractory brick wall (21), the refractory brick wall (21) is equipped with the refractory vault (23), the top of the refractory vault (23) is the expanded perlite (22), the refractory brick wall (21) is equipped with the structural column (24) and the refractory wall ring beam (25).
2. The incineration fluidized bed furnace frame structure for purifying ash according to claim 1, wherein The 50~60mm gap between the red brick wall (20) and the refractory brick wall (21) is filled with the expanded perlite (22).
3. The incineration fluidized bed furnace frame structure according to claim 1, wherein The refractory brick wall (21) extends outward by half in the height direction every 5-8 layers of bricks.
4. The incineration fluidized bed furnace frame structure according to claim 1, wherein The four structural columns (24) are located at the corners of the refractory brick wall (21).
5. The incineration fluidized bed furnace frame structure for purifying ash according to claim 1, wherein The material specification of the four corner columns (10) is 160*160*8mm, the material specification of the steel structure frame (11) is 160*80*8mm, and the material specification of the corner reinforcing angle steel (12) is 75*75*7mm.
6. The incineration fluidized bed furnace frame structure for purifying ash according to claim 1, wherein The material of the refractory brick wall (21) is high-alumina brick.
7. The incineration fluidized bed furnace frame structure for purifying ash according to claim 1, wherein The fire-retardant wall slope surface inside the furnace body (2) is poured with 50~60mm thick wear-resistant corundum castable.
8. The incineration fluidized bed furnace frame structure for purifying ash according to claim 1, wherein The refractory vault (23) is 200~220mm thick wear-resistant corundum castable, the outer side of the refractory vault (23) uses 40mm×4mm flat iron to make a reinforcing bar, the longitudinal and transverse spacing of the reinforcing bar is 320mm and 200mm respectively, the expansion joint on the refractory vault (23) is filled with wear-resistant corundum plastic joint sealant, the width of the joint sealant is not less than 150mm and the thickness is not less than 60mm.
9. The incineration grate furnace frame structure according to claim 1, wherein The structural column (24) and the refractory wall ring beam (25) use wear-resistant corundum castable as the material, the main reinforcement of the structural column (24) is Φ16mm, and the stirrup of the structural column (24) is Φ10mm.