Waste heat furnace flue
By connecting at least five vertical flue in the residual heat boiler to connect with a horizontal flue flue in the duplex discharge, the high and ash blocking of the equipment caused by the existing residual heat boiler flue layout have been solved, and the reduction of ash accumulation blockage has been reduced, and the reduction of the accumulation of ash blocking has been reduced, and it has reduced the reduction. The height of the equipment and the effect of improving the efficiency of flue gas transportation.
Patent Information
- Application Number
- CN202323527670.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-22
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2033-12-22
AI Technical Summary
The existing flue arrangement method of waste heat boilers leads to a higher equipment height, which increases the cost of incineration of the factory, and the bottom of the vertical flue is prone to ash accumulation and blockage, affecting the flue gas delivery efficiency.
The vertical flue that is presented to the duplex is connected to a horizontal flue flue connecting to increase the flow path and flow time of the flue gas, thereby reducing the height of the vertical flue and the remaining heat furnace.
In the case of ensuring the heat exchange area, the height of the vertical flue and the residual heat furnace is reduced, the height and cost of incineration plants are reduced, and the efficiency of flue gas conveying is improved.
Smart Images
Figure CN222417506U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of boiler smoke transportation, in particular to a waste heat furnace flue. Background Art
[0002] Grate furnace and waste heat boiler are the core key equipment of waste incineration power generation project. After the grate furnace is burned, flue gas is generated and enters the waste heat boiler for heat exchange. Existing waste heat boilers usually only adopt a four-flue arrangement. The first, second and third flues are arranged vertically, and the fourth flue is arranged horizontally. This flue arrangement leads to a high height of the waste heat boiler equipment, generally more than 35m, which greatly increases the cost of the incineration plant. If the height does not meet the requirements, it will affect the heat exchange area. At the same time, ash is easily accumulated at the bottom of the vertical flue, blocking the flue, making it inconvenient to clean and affecting the efficiency of flue gas transportation. The utility model proposes a new solution to the above problems. Utility Model Content
[0003] In order to overcome at least one of the above-mentioned disadvantages, the utility model provides a flue of a waste heat furnace. The purpose of the utility model can be achieved by adopting the following technical solutions:
[0004] A waste heat furnace flue comprises a vertical flue assembly and a horizontal flue assembly, wherein the vertical flue assembly is connected to the horizontal flue assembly, the vertical flue assembly comprises at least five vertical flues, at least five of the vertical flues are arranged in a reciprocating manner, and the horizontal flue assembly comprises a first horizontal flue.
[0005] In one possible implementation, the vertical flue assembly includes a first vertical flue, a second vertical flue, a third vertical flue, a fourth vertical flue, and a fifth vertical flue;
[0006] Among them, the first vertical flue, the second vertical flue, the third vertical flue, the fourth vertical flue and the fifth vertical flue are connected end to end in sequence, and the fifth vertical flue is connected to the first horizontal flue.
[0007] In one possible implementation manner, the first vertical flue, the second vertical flue, the third vertical flue, the fourth vertical flue and the fifth vertical flue are all arranged vertically; and the first horizontal flue is arranged horizontally.
[0008] In one possible implementation manner, the vertical flue assembly further includes a plurality of vertically arranged sixth vertical flues.
[0009] In one embodiment, the height of the connection between the second vertical flue and the third vertical flue is lower than the height of the connection between the first vertical flue and the second vertical flue, and lower than the height of the connection between the third vertical flue and the fourth vertical flue;
[0010] The height of the connection between the fourth vertical flue and the fifth vertical flue is lower than the height of the connection between the third vertical flue and the fourth vertical flue, and lower than the height of the connection between the fifth vertical flue and the first horizontal flue.
[0011] In one possible implementation manner, a soot recovery device is provided at the lowest point of the smoke flow diversion of the vertical flue assembly, and the soot recovery device includes a recovery container, and the recovery container is connected to the vertical flue assembly.
[0012] In one possible implementation, the ash recovery device further comprises a guide plate, which is disposed at the connection between the recovery container and the flue assembly and is used to guide the ash into the recovery container;
[0013] One end of the guide plate is inserted into the interior of the recovery container and extends downward, a gap for smoke to pass through is provided between the guide plate and the bottom surface of the inner wall of the recovery container, and the cavity defined by the recovery container and the guide plate forms a accommodating chamber for accommodating cigarette ash.
[0014] In one embodiment, a filter layer is provided on the guide plate for filtering smoke soot so that the airflow in the accommodating cavity can pass through and re-enter the vertical flue assembly; wherein,
[0015] The upper end of the guide plate is connected to the recovery container; or, the upper end of the guide plate is connected to the vertical flue assembly.
[0016] In one embodiment, the guide plate includes a curved section, the upper end of the curved section is connected to the recovery container or the flue assembly, and the lower end of the curved section is inserted into the recovery container;
[0017] The curved section includes an arc section and / or at least one straight section.
[0018] In one embodiment, the ash recovery device further comprises:
[0019] An observation window is provided on the recycling container for observing the internal conditions of the recycling container;
[0020] The scale line is arranged on the recovery container and is used to observe the ash residue in the recovery container.
[0021] Beneficial technical effects of the utility model: According to the contents of the present disclosure, the flue of the waste heat furnace is connected with a horizontal flue by setting at least five vertical flues arranged in a reciprocating manner, which can increase the flow path and flow time of the flue gas in the vertical flue assembly. Under the premise of ensuring the heat exchange area, the height of the vertical flue and the waste heat furnace can be greatly reduced, thereby reducing the height and cost of the incineration plant. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In the accompanying drawings, the following are given by way of example and not limitation:
[0023] Figure 1 The schematic diagram of the flue structure of the utility model is shown;
[0024] Figure 2 The schematic diagram of the smoke flow direction of the utility model is shown;
[0025] Figure 3 The schematic diagram of the installation position of the smoke ash recovery device of the utility model is shown;
[0026] Figure 4 A front view of the structure of a soot recovery device of the utility model is shown;
[0027] Figure 5 A front view of the structure of another ash recovery device of the utility model is shown.
[0028] In the figure:
[0029] 1. Vertical flue assembly; 2. Horizontal flue assembly; 3. Ash recovery device;
[0030] 11. The first vertical flue; 12. The second vertical flue; 13. The third vertical flue; 14. The fourth vertical flue; 15. The fifth vertical flue; 21. The first horizontal flue;
[0031] 31. Recovery container; 32. Guide plate; 33. Accommodating chamber; 34. Observation window; 35. Scale line. DETAILED DESCRIPTION
[0032] In the following detailed disclosure, these embodiments are fully described with reference to the drawings. In order to make the technical scheme of the utility model more clear and specific to those skilled in the art, the implementation methods described below are not limited to this. The utility model is further described in detail below in combination with the embodiments and drawings.
[0033] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.
[0034] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.
[0035] The utility model provides a waste heat furnace flue, such as Figure 1 and Figure 2 As shown, the waste heat furnace flue includes a vertical flue assembly 1 and a horizontal flue assembly 2. The vertical flue assembly 1 is connected to the horizontal flue assembly 2. The vertical flue assembly 1 includes at least five vertical flues, and the at least five vertical flues are arranged in a reciprocating manner. The horizontal flue assembly 2 includes a first horizontal flue 21.
[0036] The flue of the waste heat furnace is connected to a horizontal flue by setting at least five vertical flues arranged in a reciprocating manner. Under the premise of ensuring the heat exchange area, the height of the vertical flue and the waste heat furnace can be greatly reduced, thereby reducing the height and cost of the incineration plant; under the condition that the height of the vertical flue remains unchanged, the heat exchange area can be greatly increased and the heat exchange efficiency can be improved.
[0037] In one possible implementation, Figure 1 and Figure 2 As shown, the vertical flue assembly 1 includes a first vertical flue, a second vertical flue, a third vertical flue 13, a fourth vertical flue 14 and a fifth vertical flue 15; the first vertical flue, the second vertical flue, the third vertical flue 13, the fourth vertical flue 14 and the fifth vertical flue 15 are connected end to end in sequence, and the fifth vertical flue 15 is connected to the first horizontal flue 21.
[0038] By arranging multiple vertical flues in a reciprocating manner and connecting end to end in sequence, the flow path and flow time of the flue gas in the vertical flue assembly are increased, thereby increasing the heat exchange area. In view of this, under the condition of the same heat exchange area, the height of the vertical flue can be reduced, thereby reducing the height of the waste heat furnace and reducing the construction cost of the factory building.
[0039] The existing waste heat boiler adopts a four-smoke arrangement, which results in a relatively high height of the waste heat boiler equipment, generally more than 35 meters. The arrangement of at least five vertical flues in this application can reduce the height of the vertical flues by more than 5 meters while ensuring that the heat exchange area remains the same, greatly reducing the height of the incineration plant and reducing the construction cost of the plant.
[0040] In one possible implementation, Figure 1 and Figure 2 As shown, the first vertical flue, the second vertical flue, the third vertical flue 13, the fourth vertical flue 14 and the fifth vertical flue 15 are all arranged vertically, and the first horizontal flue 21 is arranged horizontally.
[0041] In specific implementation, the angle of the vertical flue relative to the horizontal plane is close to 90°, and the horizontal flue is close to parallel to the horizontal plane. Through multiple adjacent vertical flues, the flue gas passes through the first vertical flue, the second vertical flue, the third vertical flue 13, the fourth vertical flue 14 and the fifth vertical flue 15 in sequence, and then enters the first horizontal flue 21.
[0042] In one embodiment, the vertical flue assembly 1 further includes a plurality of sixth vertical flues arranged vertically. It is understandable that a plurality of sixth vertical flues may be arranged in the same arrangement as other vertical flues, and the height of the vertical flues may be further reduced by increasing the number of vertical flues, thereby further reducing the required height of the plant and reducing costs.
[0043] In one possible implementation, Figure 2 As shown, the height of the connection between the second vertical flue 13 and the third vertical flue 13 is lower than the height of the connection between the first vertical flue 13 and the second vertical flue, and lower than the height of the connection between the third vertical flue 13 and the fourth vertical flue 14; the height of the connection between the fourth vertical flue 14 and the fifth vertical flue 15 is lower than the height of the connection between the third vertical flue 13 and the fourth vertical flue 14, and lower than the height of the connection between the fifth vertical flue 15 and the first horizontal flue 21.
[0044] When the flue gas passes through two adjacent vertical flues arranged in a reciprocating manner, the flue gas in the flue turns at the top connection point or the bottom connection point of the two vertical flues to enter the next flue. It can be understood that more than three vertical flues form at least one bottom turning area, and at least five vertical flues arranged in a reciprocating manner in the utility model form two bottom turning areas, which are prone to form a large amount of ash accumulation. The existence of bottom ash accumulation will reduce the flow area of the flue, increase the flow rate of the flue gas, lead to a reduction in the heat exchange area, shorten the service life of the flue and its components, and cause flue blockage as time goes by.
[0045] In one possible implementation, Figure 3-Figure 5 As shown, a soot recovery device 3 is provided at the lowest point of the smoke flow turning of the vertical flue assembly 1 . The soot recovery device 3 includes a recovery container 31 . The recovery container 31 is connected to the vertical flue assembly 1 .
[0046] In specific implementation, an ash discharge port is opened at the bottom connecting part of two adjacent vertical flues, and the recovery container 31 includes an open end corresponding to the ash discharge port, and the open end is corresponding to the ash discharge port to achieve communication between the vertical flue assembly 1 and the ash recovery device 3, so that the ash can be accumulated in the recovery container 31, reducing the impact of the ash on the flue flow area.
[0047] In an embodiment provided by the utility model, the ash recovery device 3 and the vertical flue assembly 1 are fixedly connected, the ash recovery device 3 is a portion extending downward from the bottom connecting part of two adjacent vertical flues, or the ash recovery device 3 is fixedly installed at the bottom connecting part of two adjacent vertical flues; by setting a valve body, preferably setting it at the bottom of the recovery container 31, the cleaning of the ash in the recovery container 31 is achieved.
[0048] In another embodiment provided by the present invention, the ash recovery device 3 and the vertical flue assembly 1 are detachably connected, and the ash recovery device 3 can be removed from the vertical flue assembly 1 to clean the ash in the recovery container 31.
[0049] In one possible implementation, Figure 4 and Figure 5 As shown, the ash recovery device 3 also includes a guide plate 32, which is arranged at the connection point between the recovery container 31 and the flue assembly, and is used to guide the ash into the recovery container 31; one end of the guide plate 32 is inserted into the interior of the recovery container 31 and extends downward, and a gap for smoke to pass through is provided between the guide plate 32 and the bottom surface of the inner wall of the recovery container 31, and the cavity defined by the recovery container 31 and the guide plate 32 forms a accommodating chamber 33 for accommodating ash.
[0050] Since the ash itself is relatively light in weight, the ash on the surface of the open recovery container 31 can easily re-enter the vertical flue with the smoke. In view of this, a guide plate 32 is provided to prevent the ash from re-entering the vertical flue through the smaller opening of the accommodating chamber 33 after entering the recovery container 31. At the same time, since the connected opening is smaller, the gas flow rate in the accommodating chamber 33 is reduced, thereby reducing the amount of ash re-entering the vertical flue assembly 1 with the airflow.
[0051] Further, such as Figure 5 As shown, a filter layer is provided on the guide plate 32 for filtering smoke ash so as to allow the airflow in the accommodating chamber 33 to pass through and re-enter the vertical flue assembly 1 .
[0052] By setting a guide plate 32 capable of filtering cigarette ash, the guide plate 32 is provided with a filter layer, or the guide plate 32 is made of a filter material, so that the smoke enters between the guide plate 32 and the recovery container 31 during the process of passing through the accommodating cavity, and flows out through the guide plate 32 to re-enter the vertical flue, so that the cigarette ash is gathered in the accommodating cavity to prevent the cigarette ash from re-entering the vertical flue with the airflow.
[0053] The upper end of the guide plate 32 is connected to the recovery container 31 ; or, the upper end of the guide plate 32 is connected to the vertical flue assembly 1 .
[0054] In one possible implementation, Figure 4 and Figure 5 As shown, the guide plate 32 includes a curved section, the upper end of which is connected to the recovery container 31 or the flue assembly, and the lower end of which is inserted into the recovery container 31; wherein the curved section includes an arc section and / or at least one straight section.
[0055] The guide plate 32 is used to guide the smoke into the accommodating chamber, and the guide plate 32 includes a curved section. It can be understood that the curved section can be composed of an arc section and / or at least one straight section to achieve the guidance of the smoke.
[0056] Furthermore, the ash recovery device 3 also includes an observation window 34 and a scale line 35. The observation window 34 is arranged on the recovery container 31 for observing the internal situation of the recovery container 31. The scale line 35 is arranged on the recovery container 31 for observing the ash residue in the recovery container 31.
[0057] In specific implementation, the recovery container 31 can be made of a transparent material, such as glass, plastic, etc., or a transparent observation window 34 can be provided to observe the ash inside the recovery container 31.
[0058] Furthermore, the scale line 35 is provided to more intuitively show the amount of ash remaining in the recovery container 31, so as to facilitate timely cleaning.
[0059] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. 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 utility model. In this specification, the schematic representation of the above terms does 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.
[0060] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
[0061] In view of the above detailed description, these and other changes can be made to these embodiments, and this written description includes the best mode embodiments to disclose the utility model. The scope of the patent obtained by the utility model is defined by the claims, and the claims are not limited by the content of the present disclosure. The protection scope of the utility model is not limited thereto. Any technician familiar with the technical field within the scope disclosed by the utility model, according to the technical solution and its concept of the utility model, makes equivalent replacement or change, which is within the protection scope of the utility model.
Claims
1. A waste heat furnace flue, characterized in that: The invention comprises a vertical flue assembly (1) and a horizontal flue assembly (2), wherein the vertical flue assembly (1) is connected to the horizontal flue assembly (2), the vertical flue assembly (1) comprises at least five vertical flues, and the at least five vertical flues are arranged in a reciprocating manner, and the horizontal flue assembly (2) comprises a first horizontal flue (21).
2. The waste heat furnace flue according to claim 1, characterized in that: The vertical flue assembly (1) comprises a first vertical flue, a second vertical flue, a third vertical flue (13), a fourth vertical flue (14) and a fifth vertical flue (15); The first vertical flue, the second vertical flue, the third vertical flue (13), the fourth vertical flue (14) and the fifth vertical flue (15) are connected end to end in sequence, and the fifth vertical flue (15) is connected to the first horizontal flue (21).
3. The waste heat furnace flue according to claim 2, characterized in that: The first vertical flue, the second vertical flue, the third vertical flue (13), the fourth vertical flue (14) and the fifth vertical flue (15) are all arranged vertically; The first horizontal flue (21) is arranged horizontally.
4. The waste heat furnace flue according to claim 3, characterized in that: The vertical flue assembly (1) further comprises a plurality of sixth vertical flues arranged vertically.
5. The waste heat furnace flue according to claim 3, characterized in that: The height of the connection between the second vertical flue and the third vertical flue (13) is lower than the height of the connection between the first vertical flue and the second vertical flue, and lower than the height of the connection between the third vertical flue (13) and the fourth vertical flue (14); The height of the connection between the fourth vertical flue (14) and the fifth vertical flue (15) is lower than the height of the connection between the third vertical flue (13) and the fourth vertical flue (14), and lower than the height of the connection between the fifth vertical flue (15) and the first horizontal flue (21).
6. The waste heat furnace flue according to claim 1, characterized in that: A soot recovery device (3) is provided at the lowest point of the smoke flow diversion of the vertical flue assembly (1), and the soot recovery device (3) comprises a recovery container (31), and the recovery container (31) is connected to the vertical flue assembly (1).
7. The waste heat furnace flue according to claim 6, characterized in that: The ash recovery device (3) further comprises: A guide plate (32) is arranged at the connection point between the recovery container (31) and the flue assembly, and is used to guide the ash into the recovery container (31); One end of the guide plate (32) is inserted into the interior of the recovery container (31) and extends downward, a gap for smoke to pass through is provided between the guide plate (32) and the bottom surface of the inner wall of the recovery container (31), and the cavity defined by the recovery container (31) and the guide plate (32) forms a containing chamber (33) for containing cigarette ash.
8. The waste heat furnace flue according to claim 7, characterized in that: The guide plate (32) is provided with a filter layer for filtering smoke soot so that the airflow in the accommodating cavity (33) can pass through and re-enter the vertical flue assembly (1); wherein: The upper end of the guide plate (32) is connected to the recovery container (31); or, The upper end of the guide plate (32) is connected to the vertical flue assembly (1).
9. The waste heat furnace flue according to claim 7, characterized in that: The guide plate (32) comprises a curved section, the upper end of the curved section is connected to the recovery container (31) or the flue assembly, and the lower end of the curved section is inserted into the interior of the recovery container (31); The curved section includes an arc section and / or at least one straight section.
10. The waste heat furnace flue according to claim 6, characterized in that: The ash recovery device (3) further comprises: An observation window (34) is provided on the recovery container (31) for observing the internal conditions of the recovery container (31); A scale line (35) is provided on the recovery container (31) for observing the ash residue in the recovery container (31).