Flue gas purification inlet dust collecting device and waste incineration system
By setting up a U-shaped bent plate ash barrier assembly at the flue gas outlet, the problem of dust in the flue gas entering the flue gas purification system is solved, and the stable operation and cost reduction of the equipment are achieved.
Patent Information
- Application Number
- CN202421699898.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-07-18
AI Technical Summary
During the garbage incineration process, dust in the flue gas enters the flue gas purification system, affecting the operation of the equipment and increasing operating costs.
Ash blocking assembly is provided at the flue gas outlet of the ash bucket under the economizer, including several U-shaped bent plates arranged at intervals. The opening of the U-shaped bent plates faces the direction of the smoke, and the bending plates are used to slow down the flue gas flow rate to promote dust settlement.
Reduce the amount of dust in the flue gas purification system, ensure stable operation of the equipment, and reduce operating costs.
Smart Images
Figure CN223137909U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of waste incinerators, and particularly relates to a dust collection device at the inlet of flue gas purification and a waste incineration system. Background Art
[0002] With the rapid development of China's social economy, the waste and garbage generated in the process of urban production and life are increasing day by day. The supporting waste incineration plants are also increasing continuously. Waste incineration projects can be seen everywhere in large and medium-sized cities, and waste incineration plants are gradually developing towards counties. The emission standards for waste incineration waste are becoming increasingly strict, and the project investment and operation costs are also increasing continuously.
[0003] A large amount of flue gas is generated during waste incineration. The dust in the flue gas will pass from the furnace to the boiler and then to the flue gas purification system. In the northern regions and small and medium-sized cities, the ash content in domestic waste is relatively high, and the flue gas will carry a large amount of dust. Excessive dust entering the flue gas purification system will not only affect the normal operation of the equipment, but also impose a burden on the operation cost. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a dust collection device at the inlet of flue gas purification and a waste incineration system to reduce the generation of dust in the flue gas purification system.
[0005] To solve the above technical problems, the utility model provides a dust collection device at the inlet of flue gas purification, including: at least one layer of ash baffle assembly for being arranged in the flue gas outlet of the economizer ash hopper; wherein
[0006] The ash baffle assembly includes a plurality of U-shaped bending plates arranged at intervals;
[0007] The opening of the U-shaped bending plate faces the incoming flue gas direction.
[0008] In an embodiment of the present application, the U-shaped bending plates are arranged vertically.
[0009] In an embodiment of the present application, a plurality of reinforcing plates are arranged in the opening of the U-shaped bending plate;
[0010] Both ends of the reinforcing plate are respectively connected to two opposite side walls in the opening of the U-shaped bending plate.
[0011] In an embodiment of the present application, the number of the ash baffle assemblies is multiple layers, and they are arranged at intervals along the flue gas escaping direction; wherein
[0012] The opening of the U-shaped bending plate of the latter layer of the ash baffle assembly is aligned with the gap of the previous layer of the ash baffle assembly.
[0013] Correspondingly, the utility model also provides a flue gas purification system, including:
[0014] The economizer ash hopper has a flue gas inlet at the top, an ash hopper outlet at the bottom, and a flue gas outlet provided on one side wall; and
[0015] The flue gas purification inlet dust collection device as described above is disposed within the flue gas outlet.
[0016] In one embodiment of the present application, the flue gas purification system further includes: a dust soot blower;
[0017] The purge pipe of the dust soot blower extends into the economizer ash hopper from the opposite side of the economizer ash hopper where the flue gas purification inlet dust collection device is located.
[0018] In one embodiment of the present application, the cross-section of the economizer ash hopper is V-shaped.
[0019] In one embodiment of the present application, the flue gas purification system further includes:
[0020] A flue provided at the flue gas outlet;
[0021] The flue is inclined upward.
[0022] The beneficial effect of the present utility model is that the flue gas purification inlet dust collection device of the present utility model includes at least one layer of ash blocking components for being disposed within the flue gas outlet of the economizer ash hopper. The ash blocking components include a plurality of U-shaped bending plates arranged at intervals, and the openings of the U-shaped bending plates face the incoming flue gas direction. There is a gap for the flue gas to pass through between adjacent U-shaped bending plates; after most of the flue gas enters the openings of the U-shaped bending plates, the forward speed will decrease, which is conducive to the settlement of dust, thereby reducing the dust entering the flue gas purification system from the flue gas outlet of the economizer ash hopper.
[0023] Other features and advantages of the present utility model will be described in the subsequent specification, and, in part, will be obvious from the specification, or will be understood by implementing the present utility model. The objectives and other advantages of the present utility model are achieved and obtained by the structures specifically pointed out in the specification and the drawings.
[0024] To make the above objectives, features, and advantages of the present utility model more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, makes a detailed description as follows. Description of the Drawings
[0025] To more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0026] Figure 1 It is a schematic diagram of the waste incineration system of the present utility model;
[0027] Figure 2 is Figure 1 the schematic diagrams in the A-A and B-B directions in
[0028] Figure 3 is Figure 1 the schematic diagram in the C direction in
[0029] Figure 4 It is a three-dimensional view of the U-shaped bending plate of the present utility model;
[0030] Figure 5 It is a top view of the U-shaped bending plate of the present utility model.
[0031] In the figure:
[0032] flue gas purification inlet dust collection device 100, ash baffle assembly 1, U-shaped bending plate 11, opening 111, reinforcing plate 12, economizer ash hopper 2, flue gas inlet 21, ash hopper outlet 22, flue gas outlet 23, dust soot blower 3, flue 4. Specific embodiments
[0033] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0034] Referring to Figure 1 、 Figure 2 and Figure 3 shown, in an embodiment of the present application, the flue gas purification inlet dust collection device 100 includes: at least one layer of ash baffle assembly 1 for being arranged in the flue gas outlet 23 of the economizer ash hopper 2; wherein the ash baffle assembly 1 includes a plurality of U-shaped bending plates 11 arranged at intervals; the opening 111 of the U-shaped bending plate 11 faces the incoming smoke direction.
[0035] In this embodiment, the U-shaped bending plates 11 are arranged at intervals, and there is a gap for flue gas to pass between two adjacent U-shaped bending plates 11; when the flue gas enters the opening 111 of the U-shaped bending plate 11, its flow velocity decreases and it will collide with the side wall of the U-shaped bending plate 11, thereby settling.
[0036] In this embodiment, optionally, the U-shaped bending plate 11 is arranged vertically to facilitate dust settlement.
[0037] In this embodiment, preferably, a plurality of reinforcing plates 12 are arranged in the opening 111 of the U-shaped bending plate 11; both ends of the reinforcing plate 12 are respectively connected to two opposite side walls in the opening 111 of the U-shaped bending plate 11.
[0038] In this embodiment, the reinforcing plate 12 can be a flat steel, which can be arranged at a position closer to the outer side in the opening 111; by arranging a plurality of reinforcing plates 12 in the opening 111 of the U-shaped bending plate 11, on the one hand, it has a strengthening effect, and on the other hand, it also has the function of collecting dust by disturbing the flow to promote dust settlement.
[0039] In an application scenario with a large amount of dust, the number of the dust blocking assemblies 1 can be multiple layers, and they are arranged at intervals along the direction of flue gas escape; the opening 111 of the U-shaped bending plate 11 of the latter dust blocking assembly 1 is aligned with the gap of the previous dust blocking assembly 1.
[0040] See Figure 1 、 Figure 2 and Figure 3 As shown in, in an embodiment, the number of the dust blocking assemblies 1 is two layers, and they are arranged at intervals along the advancing direction of the flue gas; see Figure 3 , there is a flue gas passing gap between adjacent U-shaped bending plates 11 of the previous dust blocking assembly 1, and the opening 111 of the U-shaped bending plate 11 of the latter dust blocking assembly 1 is aligned with the corresponding flue gas passing gap; this can improve the efficiency of dust collection.
[0041] In this embodiment, optionally, see Figure 2 , the multiple U-shaped bending plates 11 of the dust blocking assembly 1 can be of different lengths and can be matched according to the cross-sectional shape of the flue gas outlet 23.
[0042] On the basis of the above embodiments, see Figure 1 , in an embodiment of the present application, a waste incineration system is provided, including: a lower economizer ash hopper 2 with a flue gas inlet 21 at the top, an ash hopper outlet 22 at the bottom, and a flue gas outlet 23 provided on one side wall; and the flue gas purification inlet dust collection device 100 as described above in 11, which is arranged in the flue gas outlet 23.
[0043] In this embodiment, the flue gas enters the lower economizer ash hopper 2 from the flue gas inlet 21, then passes through the flue gas purification inlet dust collection device 100, most of the dust therein is settled, and is discharged through the ash hopper outlet 22 at the bottom, and the flue gas continues to be discharged from the flue gas outlet 23 and enters the subsequent flue gas purification system.
[0044] In some application scenarios, after long-term operation or when the dust in the flue gas is large, it is necessary to remove the dust on the flue gas purification inlet dust collection device 100.
[0045] In this embodiment, preferably, the waste incineration system further includes: a dust soot blower 3; the purge pipe of the dust soot blower 3 extends into the economizer ash hopper 2 from the side of the economizer ash hopper 2 opposite to the dust collection device 100 at the inlet of the flue gas purification.
[0046] In this embodiment, the dust soot blower 3 can purge the dust collection device 100 at the inlet of the flue gas purification to clean the accumulated ash.
[0047] In this embodiment, the cross-section of the economizer ash hopper 2 is V-shaped, which is convenient for the downward discharge of dust.
[0048] In this embodiment, the waste incineration system further includes: a flue 4 provided at the flue gas outlet 23; the flue 4 is inclined upward. By changing the running direction of the flue gas, further turbulence can be generated to improve the dust settling effect.
[0049] In summary, the dust collection device at the inlet of the flue gas purification of the present utility model can reduce the generation of dust in the flue gas purification system, which is beneficial to the long-term stable operation of the equipment in the flue gas purification system.
[0050] Each device (components without specific structures) selected in this application are all common standard parts or parts known to those skilled in the art, and their structures and principles can all be known by those skilled in the art through technical manuals or obtained through conventional experimental methods.
[0051] In the description of the embodiments of the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0052] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0053] Based on the above-mentioned ideal embodiments of the present utility model as inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A flue gas purification inlet dust collection device, characterized in that, Comprising: At least one layer of dust blocking component (1), which is used to be arranged in the flue gas outlet (23) of the economizer ash hopper (2); Wherein The dust blocking component (1) includes a plurality of U-shaped bending plates (11) arranged at intervals; The opening (111) of the U-shaped bending plate (11) faces the incoming flue gas direction.
2. The dust collection device for the inlet of flue gas purification according to claim 1, characterized in that The U-shaped bending plate (11) is arranged vertically.
3. The dust collection device for the inlet of flue gas purification according to claim 1, characterized in that A plurality of reinforcing plates (12) are arranged in the opening (111) of the U-shaped bending plate (11); Both ends of the reinforcing plate (12) are respectively connected to two opposite side walls in the opening (111) of the U-shaped bending plate (11).
4. The dust collection device for the inlet of flue gas purification according to claim 1, characterized in that The number of the dust blocking components (1) is multiple layers, and they are arranged at intervals along the flue gas escaping direction; Wherein The opening (111) of the U-shaped bending plate (11) of the latter layer of dust blocking component (1) is aligned with the gap of the previous layer of dust blocking component (1).
5. A waste incineration system, characterized in that, Comprising: The economizer ash hopper (2), with a flue gas inlet (21) at the top, an ash hopper outlet (22) at the bottom, and a flue gas outlet (23) arranged on one side wall; And The dust collection device (100) for the inlet of flue gas purification according to any one of claims 1-4, which is arranged in the flue gas outlet (23).
6. The waste incineration system according to claim 5, characterized in that, Further comprising: A dust soot blower (3); The blowing pipe of the dust soot blower (3) extends into the economizer ash hopper (2) from the opposite side of the economizer ash hopper (2) where the dust collection device for the inlet of flue gas purification (100) is located.
7. The waste incineration system according to claim 5, characterized in that The cross-section of the economizer ash hopper (2) is V-shaped.
8. The waste incineration system according to claim 5, characterized in that, Further comprising: A flue (4) arranged at the flue gas outlet (23); The flue (4) is inclined upward.