CN214249532U - Vertical waste heat steam boiler - Google Patents
Vertical waste heat steam boiler Download PDFInfo
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- CN214249532U CN214249532U CN202120088428.1U CN202120088428U CN214249532U CN 214249532 U CN214249532 U CN 214249532U CN 202120088428 U CN202120088428 U CN 202120088428U CN 214249532 U CN214249532 U CN 214249532U
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Abstract
The utility model provides a vertical waste heat steam boiler relates to waste heat recovery technical field, and the main objective is solved traditional waste heat steam boiler dust can not subside, the pipe wall deposition is serious, the problem that heat exchange efficiency is low, provides a vertical waste heat steam boiler that the dust easily subsides, the difficult deposition of pipe wall. The vertical waste heat steam boiler comprises a boiler body and a front membrane type wall header; the interior of the furnace body is divided into a radiation area and a convection area by a partition plate, and the flue gas flowing into the furnace body flows through the radiation area and the convection area in sequence and then is discharged through an exhaust port; the exhaust port is positioned at the lower half part of the furnace body; at least one partition board is arranged in the radiation area, the radiation area forms a turn-back structure under the partition effect of the partition board, and the at least one turn-back structure is positioned below the partition board; the front membrane type wall header is positioned at the lower end of the furnace body and just below the turn-back structure. The utility model is used for solve dust in exhaust heat steam boiler's the flue gas can not subside, the deposition problem, improve heat exchange efficiency.
Description
Technical Field
The utility model belongs to the technical field of waste heat recovery technique and specifically relates to a vertical waste heat steam boiler is related to.
Background
The existing waste heat steam boilers used in production all have the problem of difficult dust sedimentation, and the undeposited dust can be enriched on the convection bank, so that the dust accumulation of the convection bank is serious. The excessive dust can cause the convection bank to wear greatly when in use, and the risk of tube explosion is easy to generate; meanwhile, a large amount of accumulated dust can obviously reduce the heat exchange effect of the convection pipe, so that the induced draft fan is in overload operation, the dust is more difficult to settle, and vicious circle is caused.
In order to solve the above problems, a new type of heat recovery steam boiler needs to be developed to reduce the dust accumulation and improve the heat exchange effect of the heat recovery steam boiler.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a vertical exhaust-heat steam boiler to solve the technical problem that easily piles up the dust in the exhaust-heat steam boiler that exists among the prior art. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a vertical waste heat steam boiler, which comprises a boiler body and a front membrane type wall header;
the interior of the furnace body is divided into a radiation area and a convection area by a baffle plate, and the flue gas flowing into the furnace body flows through the radiation area and the convection area in sequence and then is discharged through an exhaust port; the exhaust port is positioned at the lower half part of the furnace body;
at least one partition board is arranged in the radiation area, the radiation area forms a turn-back structure under the partition effect of the partition board, and at least one turn-back structure is positioned below the partition board;
the front membrane type wall header is positioned at the lower end of the furnace body and just below the turn-back structure.
Because the existence of the structure of turning back, the flue gas that flows into in the furnace body can change flow direction in structure department of turning back, when the structure of turning back that the flow path is located the baffle below, most dust in the flue gas, especially large granule dust can subside here and fall into the ash bucket in, the flue gas after subsiding the ash removal continues to flow to the convection current district in, avoid the dusty flue gas to be introduced the convection current district, the problem of the unable effective deashing of soot blower because of the too big dust content of flue gas leads to has been solved, the possibility of large granule dust wearing and tearing equipment has more been avoided. In addition, the heat exchange area of the radiation area is effectively increased, and the exhaust port is located on the lower half portion of the furnace body, so that the work of the convection area can be facilitated, and the heat exchange efficiency is improved.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
As a further improvement of the utility model, the lower end of the baffle plate is fixedly connected with the furnace body, and the upper end of the baffle plate is provided with a channel for the flue gas to pass through between the furnace bodies.
The flue gas in the convection zone flows from top to bottom, wherein the high-temperature flue gas is close to the upper drum, and the low-temperature flue gas is close to the lower drum, so that the natural convection of the medium in the convection zone is facilitated.
As a further improvement of the utility model, the preceding diaphragm type wall collection case upper end pass through the connecting pipe with the furnace body links to each other, the lower extreme of furnace body be provided with the opening that preceding diaphragm type wall collection case links to each other, the connecting pipe runs through the setting and is in the opening part.
This design avoids obstruction to dust fall.
As a further improvement of the utility model, the lower end of the furnace body is inclined and is positioned at the lower point of the lower end of the furnace body in the radiation area.
As a further improvement of the utility model, a convection bank is installed in the convection zone.
As a further improvement of the utility model, the two ends of the convection bank are respectively and fixedly arranged at the upper and lower ends of the furnace body.
As a further improvement, the convection section is also provided with a guide plate, the guide plate passes through the baffle with the inside wall of the furnace body is fixedly arranged.
As a further improvement of the present invention, the guide plate is inclined toward the flow direction of the flue gas.
As a further improvement of the present invention, the exhaust port is located below the guide plate.
As a further improvement of the utility model, at least one the baffle can link to each other through the lower extreme of convection tube with the furnace body, the quantity of convection tube is at least one just the convection tube with there is the clearance that supplies the flue gas circulation between the lateral wall of furnace body.
Compared with the prior art, the utility model provides a vertical exhaust-heat steam boiler, including the furnace body and be located the preceding diaphragm type wall collection case of furnace body lower extreme, wherein the furnace body is inside to be separated for radiation zone and convection current district two parts through the baffle, and both are linked together through the passageway that is located the baffle top, and the flue gas can be distinguished by the radiation and flow into in the convection current district through this passageway. In the process, the flue gas flows through at least one return structure below the partition plate and realizes natural sedimentation of dust. Through above-mentioned structure can effectively improve the problem of the easy deposition of traditional vertical exhaust-heat steam boiler, effectively reduce convection bank's the wearing and tearing condition simultaneously, improve the heat exchange efficiency of this equipment, also can effectively solve the problem of draught fan overload operation simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a vertical waste heat steam boiler in the prior art;
FIG. 2 is a schematic structural diagram of the vertical waste heat steam boiler of the utility model;
fig. 3 is a schematic structural view of the junction of the front membrane type wall header and the furnace body in fig. 2.
In the figure: 1. a furnace body; 11. a radiation region; 12. a convection zone; 13. an exhaust port; 14. an air inlet; 2. a front membrane type wall header; 3. a baffle plate; 4. a partition plate; 5. a foldback structure; 6. a guide plate; 7. a convection bank.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.
Fig. 1 is a schematic structural diagram of a vertical waste heat steam boiler in the prior art, and fig. 2 is a schematic structural diagram of the vertical waste heat steam boiler of the present invention; can see through the contrast, the utility model discloses all change furnace body inside radiation district part, furnace body lower extreme and gas vent department etc. has increased the working area in radiation district, is provided with the structure of turning back that can realize the dust subsides naturally in the radiation district below simultaneously. In addition, the lower end of the furnace body is of an inclined surface structure which inclines towards one side of the front membrane type wall header, so that settled dust can fall into the dust hopper conveniently. By also the above-mentioned modification, the flow direction of the flue gas (the flow direction of the flue gas is indicated by an arrow) can be effectively changed.
FIG. 3 is a schematic structural view of the junction of the front membrane type wall header and the furnace body in FIG. 2; as can be seen from the figure, a plurality of connecting pipe structures are arranged at the connecting part of the front membrane type wall header and the furnace body, the connecting pipes have relatively large diameters, and a gap for dust to fall down is formed between two adjacent connecting pipes.
The technical solution of the present invention will be specifically described below with reference to the accompanying drawings.
The structure of the existing waste heat steam boiler is shown in figure 1, when the boiler is used, because the accumulated dust is serious in a convection pipe and cannot be effectively cleaned, the accumulated dust on a heating surface increases the thermal resistance, greatly influences the heat transfer of the heating surface of the boiler, and accordingly reduces the thermal efficiency of the boiler. In order to ensure the amount of steam required for production, measures of raising the temperature of the flue gas and increasing the amount of the flue gas are generally adopted. The ash content is easier to adhere to the tube bundle after the temperature of the flue gas is increased; the flow resistance can be increased after the smoke volume is increased, so that the operation load of the induced draft fan is increased while ash is more easily accumulated on the pipe wall. The convection bank is at the effective deashing position of boiler operation initial stage and soot blower, entry position, and the pipe wall is worn and torn easily to the large granule dust that carries in the flue gas, and the flue gas velocity can improve and has increased especially to its wearing and tearing behind the improvement flue gas volume. In order to solve the above problems, it is most critical to solve the dust problem.
As shown in fig. 2, the utility model provides a novel vertical waste heat steam boiler, which comprises a boiler body 1 and a front membrane type wall header 2; the interior of the furnace body 1 is divided into a radiation zone 11 and a convection zone 12 by a baffle plate 3, and the flue gas flowing into the furnace body 1 flows through the radiation zone 11 and the convection zone 12 in sequence and then is discharged through an exhaust port 13; the exhaust port 13 is positioned at the lower half part of the furnace body 1; at least one partition plate 4 is arranged in the radiation area 11, the radiation area 11 forms a turn-back structure 5 under the partition action of the partition plate 4, and at least one turn-back structure 5 is positioned below the partition plate 4; the front membrane type wall header 2 is positioned at the lower end of the furnace body 1 and just below the foldback structure 5.
Because of the existence of the structure of turning back 5, the flue gas that flows into in the furnace body 1 through the air inlet 14 can change the flow direction in the structure of turning back 5 department, its velocity of flow can reduce when the structure of turning back 5 that is located the baffle 4 below flows through, most dust in the flue gas, especially large granule dust can subside here and fall into the ash bucket in thereby form a natural settling zone, the flue gas after subsiding the ash removal continues to flow to convection current region 12 in, avoid dusty flue gas to be introduced convection current region 12, the problem of the unable effective deashing of soot blower because of the too big dust content of flue gas leads to has been solved, the possibility of large granule dust wearing and tearing equipment has more been avoided. The exhaust port 13 is positioned at the lower half part of the furnace body 1, so that the work of the convection zone 12 can be facilitated, and the heat exchange efficiency is improved.
In addition, compared with the traditional steam boiler, the boiler body 1 increases the volume of the radiation area 11, and the structure of the partition plate 4 effectively increases the heat exchange area in the radiation area 11 and improves the heat exchange efficiency of the radiation area 11.
As an alternative embodiment, the lower end of the baffle 3 is fixedly connected with the furnace body 1, and a channel for flue gas to pass through is arranged between the upper end of the baffle and the furnace body 1, as shown in FIG. 2. At this time, the flue gas in the convection zone 12 flows from top to bottom, wherein the high-temperature flue gas is close to the upper drum, and the low-temperature flue gas is close to the lower drum, which is beneficial to natural convection of the medium in the convection zone 12.
As an alternative embodiment, the upper end of the front membrane type wall header 2 is connected with the furnace body 1 through a connecting pipe, the lower end of the furnace body 1 is provided with an opening connected with the front membrane type wall header 2, the connecting pipe is arranged at the opening in a penetrating way, and the structure is shown in fig. 3. This design avoids obstruction to dust fall.
As an alternative embodiment, the lower end of the furnace body 1 is arranged obliquely and the lower point of the lower end of the furnace body 1 is located in the radiant zone 11.
As an alternative embodiment, a convection bank 7 is installed in the convection zone 12, and both ends of the convection bank 7 are respectively fixedly arranged at the upper and lower ends of the furnace body 1.
As an alternative embodiment, a guide plate 6 is further arranged in the convection zone 12, and the guide plate 6 is fixedly arranged on the inner side wall of the furnace body 1 through the baffle plate 3. In order to avoid affecting the normal flow of the flue gas, the guide plate 6 is arranged obliquely towards the flow direction of the flue gas, and part of dust in the flue gas can be deposited on the guide plate 6 at this time so as not to affect the heat exchange efficiency of the convection bank 7.
As an alternative embodiment, the exhaust 13 is located below the guide plate 6.
As an alternative embodiment, at least one baffle 4 can be connected to the lower end of the furnace 1 by means of at least one convection tube, which is spaced from the side wall of the furnace 1 by a gap for the passage of flue gases.
When using this vertical waste heat steam boiler, the flue gas can flow through a structure 5 that turns back that is located 4 below of baffle and realize the natural settlement of dust at least, has effectively solved the easy deposition's of traditional vertical waste heat steam boiler problem, effectively reduces the wearing and tearing condition of convection bank 7 simultaneously, improves the heat exchange efficiency of this equipment, also can solve the problem of draught fan overload operation simultaneously.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The vertical waste heat steam boiler is characterized by comprising a boiler body (1) and a front membrane type wall header (2);
the interior of the furnace body (1) is divided into a radiation zone (11) and a convection zone (12) by a baffle (3), and the flue gas flowing into the furnace body (1) flows through the radiation zone (11) and the convection zone (12) in sequence and then is discharged through an exhaust port (13); the exhaust port (13) is positioned at the lower half part of the furnace body (1);
at least one partition plate (4) is arranged in the radiation area (11), the radiation area (11) forms a turn-back structure (5) under the partition action of the partition plate (4), and at least one turn-back structure (5) is positioned below the partition plate (4);
the front membrane type wall header (2) is positioned at the lower end of the furnace body (1) and just below the turn-back structure (5).
2. A vertical waste heat steam boiler according to claim 1, characterized in that the lower end of the baffle plate (3) is fixedly connected with the boiler body (1), and a channel for flue gas to pass through is arranged between the upper end of the baffle plate and the boiler body (1).
3. A vertical waste heat steam boiler according to claim 1, characterized in that the upper end of the front membrane wall header (2) is connected with the furnace body (1) through a connecting pipe, the lower end of the furnace body (1) is provided with an opening connected with the front membrane wall header (2), and the connecting pipe is arranged at the opening in a penetrating way.
4. A vertical waste heat steam boiler according to claim 1, characterized in that the lower end of the furnace body (1) is arranged obliquely and the lower point of the lower end of the furnace body (1) is located in the radiant section (11).
5. A vertical waste heat steam boiler according to claim 1, characterized in that inside the convection zone (12) is mounted a convection bank (7).
6. A vertical waste heat steam boiler according to claim 5, characterized in that both ends of the convection bank (7) are fixedly arranged at the upper and lower ends of the boiler body (1), respectively.
7. A vertical waste heat steam boiler according to claim 1, characterized in that guide plates (6) are also arranged in the convection zone (12), the guide plates (6) being fixedly arranged with the inner side walls of the furnace body (1) by means of the baffle plates (3).
8. A vertical waste heat steam boiler according to claim 7, characterized in that the guide plates (6) are arranged obliquely towards the flow direction of the flue gases.
9. A vertical waste heat steam boiler according to claim 7, characterized in that the exhaust ports (13) are located below the guide plate (6).
10. A vertical waste heat steam boiler according to claim 1, characterized in that at least one of the baffles (4) is connectable to the lower end of the furnace body (1) by means of at least one convection tube, which is spaced from the side wall of the furnace body (1) by a gap through which flue gas can flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120088428.1U CN214249532U (en) | 2021-01-13 | 2021-01-13 | Vertical waste heat steam boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120088428.1U CN214249532U (en) | 2021-01-13 | 2021-01-13 | Vertical waste heat steam boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214249532U true CN214249532U (en) | 2021-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120088428.1U Active CN214249532U (en) | 2021-01-13 | 2021-01-13 | Vertical waste heat steam boiler |
Country Status (1)
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|---|---|
| CN (1) | CN214249532U (en) |
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2021
- 2021-01-13 CN CN202120088428.1U patent/CN214249532U/en active Active
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