CN220379705U - Flue components and desulfurization absorption tower - Google Patents

Abstract

The utility model relates to the technical field of power plant equipment and discloses a flue assembly and a desulfurization absorption tower. The flue assembly includes a flue, a spray component, a plurality of support components and a flushing component. The flue has a first port and a second port. After the flue gas enters the flue through the first port, it is discharged from the second port. The spray component is arranged in the cavity of the flue and is used to spray the first cooling medium into the flue to cool the flue gas in the flue. The support component extends vertically, and multiple support components are parallel and spaced apart in the flue. at the second port to divide the second port of the flue into multiple flow channels. The flushing component is located in the cavity near the second port in the flue. The flushing component is used to spray flushing medium to the support component to perform cleaning on the support component. rinse. The flue assembly disclosed by the utility model can guide and cool the flue gas, and can also flush the scale deposited in the second port area of the flue to prevent scale formation in the flue.

Description

Flue components and desulfurization absorption tower

Technical field

The utility model relates to the technical field of power plant equipment, and specifically relates to a flue assembly and a desulfurization absorption tower.

Background technique

The power plant desulfurization absorption tower is a flue gas treatment device at the end of a thermal power plant. Its main function is to use limestone slurry to remove sulfur dioxide from the flue gas to achieve environmental protection purposes. Because the flue gas temperature entering the absorption tower is too high, the demister and other related components inside the absorption tower are not heat-resistant. When the temperature of the flue gas passing through the relevant components is higher than 85°C, its service life and working performance will be seriously affected. . In related technologies, spraying cooling water at the flue inlet to reduce the temperature of the flue gas will cause a dry-wet junction area to form at the flue inlet, and scale will form in the dry-wet junction area, affecting the flow field distribution of the incoming smoke.

Utility model content

The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, embodiments of the present invention propose a flue assembly capable of changing the airflow distribution of the flue and cooling the flue gas.

An embodiment of the present utility model also provides a desulfurization absorption tower.

The flue assembly of the embodiment of the present utility model includes:

A flue, the flue has a first port and a second port. After the flue gas enters the flue through the first port, it is discharged from the second port;

A spray component, which is located in the cavity of the flue and is used to spray the first cooling medium into the flue to cool the flue gas in the flue;

A plurality of support members extend vertically, and are parallel and spaced apart at the second port of the flue to divide the second port of the flue into multiple a flow channel;

A flushing component is provided in a cavity in the flue close to the second port. The flushing component is used to spray flushing medium onto the support component to flush the support component.

The flue assembly of the embodiment of the present invention can support the flue through the supporting parts and guide the air flow to ensure that the air flow is better distributed in the absorption tower. The spray parts can cool down the flue gas and flush the parts. The scale deposited in the second port area of the flue can be flushed to prevent scale formation in the flue.

In some embodiments, the flue has a first section and a second section, the first section and the second section are connected, and the length extension direction of the first section and the third section are connected. The length extension direction of the two sections is arranged in a zigzag shape, the first port is located on the first section, and the second port is located on the second section.

In some embodiments, in the longitudinal section of the flue, the second section extends in a horizontal direction, and an end of the first section close to the first port is relative to the second section. The section slopes upward.

In some embodiments, in the vertical direction, one end of the lower panel of the second section close to the second port is inclined downward.

In some embodiments, the spray component is provided in the second section, the spray component includes a plurality of groups of spray units, and the plurality of groups of spray units extend along the length of the second section. Arranged at intervals in directions, each group of the spray units includes a plurality of spray pipes, the spray pipes extend along a first direction, and the first direction is consistent with the vertical direction and the length extension direction of the second section. Orthogonally, the plurality of spray pipes in each group of the spray units are arranged at vertical intervals, and all the spray pipes in the spray components are arranged in a staggered manner in the vertical direction.

In some embodiments, the support component has a first cavity, and the flue gas in the flue is cooled by passing a second cooling medium into the first cavity.

In some embodiments, the support component is detachably connected to the flue. In the vertical direction, the upper panel of the flue is provided with a first installation opening, and the lower panel of the flue is provided with a first installation opening. The second installation port, the support component is inserted into the flue through the first installation port, the support component includes:

a tube body having a first end and a second end;

A connecting plate, the connecting plate is provided at the first end of the pipe body, the connecting plate is in close contact with the upper panel and connected through a first connecting piece;

A first connecting pipe, the first connecting pipe is provided on the connecting plate, and the first connecting pipe is connected with the first cavity of the supporting part;

a second connecting pipe, the second connecting pipe is provided at the second end of the pipe body, the second connecting pipe passes through the second installation port, and the second connecting pipe is provided with a threaded section, The threaded section is provided with a second connecting piece.

In some embodiments, along the flow direction of the flue gas, the cross-sectional size of the middle part of the support member is larger than the cross-sectional size of both ends of the support member.

In some embodiments, the flushing component includes:

A plurality of flushing pipes extending along the direction in which the plurality of supporting members are spaced apart. The plurality of flushing pipes are arranged at vertical intervals. The flushing pipes are provided with flushing holes corresponding to each of the supporting members. hole.

The desulfurization absorption tower according to the embodiment of the present utility model includes

A tower body, the tower body has a smoke inlet;

The flue assembly in any of the above embodiments, the flue assembly is located at the smoke inlet;

A first driving part, the first driving part is connected with the spray component to transport the first cooling medium into the spray component;

a second driving part, the second driving part is connected with the flushing component to transport flushing medium into the flushing component;

A control unit, the control unit is connected to the second driving part to control the second driving part to start and stop periodically.

Description of the drawings

Figure 1 is a schematic structural diagram of a flue assembly according to an embodiment of the present invention.

Figure 2 is a schematic structural diagram of a flue assembly according to another embodiment of the present invention.

Figure 3 is a schematic structural diagram of a flue assembly according to another embodiment of the present invention.

Figure 4 is a schematic cross-sectional structural view of a flue assembly according to an embodiment of the present invention.

Figure 5 is a schematic structural diagram of a spray component and a flushing component according to an embodiment of the present invention.

Figure 6 is a schematic structural diagram of a spray component and a flushing component according to another embodiment of the present invention.

Figure 7 is a schematic structural diagram of a spray component and a flushing component according to another embodiment of the present invention.

Figure 8 is a schematic structural diagram of a spray component and a flushing component according to yet another embodiment of the present invention.

Figure 9 is a schematic structural diagram of a support component according to an embodiment of the present invention.

Reference signs:

Flue 1, first port 11, second port 12, first section 13, second section 14, upper panel 141, lower panel 142;

Spray component 2, spray pipe 21, water pipe 22, spray head 23;

Support component 3, tube body 31, connecting plate 32, first connecting pipe 33, second connecting pipe 34, first connecting piece 35, second connecting piece 36;

Flushing component 4, flushing pipe 41;

Tower body 5.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to explain the present invention, but should not be understood as limiting the present invention.

Referring to Figures 1 to 3, the flue 1 assembly of the embodiment of the present invention includes a flue 1. The flue 1 has a first port 11 and a second port 12. After the flue gas enters the flue 1 through the first port 11, discharged from the second port 12.

In order to enable the flue gas to cool down in the flue 1, a spray component 2, a plurality of support components 3 and a flushing component 4 are provided in the flue 1. The spray component 2 is provided in the cavity of the flue 1. In spraying the first cooling medium into the flue 1 to cool the flue gas in the flue 1, optionally, the first cooling medium may be normal temperature water or cooled cooling water.

The support member 3 extends vertically, and multiple support members 3 are parallel and spaced at the second port 12 of the flue 1 to divide the second port 12 of the flue 1 into multiple flow channels, and the flue gas passes through the plurality of flow channels. The flow channel will be divided to improve the distribution effect of flue gas in the absorption tower to ensure better distribution of air flow in the absorption tower. The support component 3 can also support the flue 1 to increase the structural strength of the flue 1 Higher to avoid deformation of the flue 1 caused by a large amount of scale deposited in the flue 1.

The flushing component 4 is located in a cavity near the second port 12 in the flue 1. The flushing component 4 is used to spray flushing medium onto the support component 3 to flush the support component 3. Optionally, the flushing medium is normal temperature water or cooled water. cooling water to prevent scaling in the flue 1 and avoid excessive scaling from affecting the flow field distribution of the flue gas.

As shown in Figures 1 and 2, in some embodiments, the flue 1 has a first section 13 and a second section 14. The first section 13 and the second section 14 are connected, and the first section 13 The length extension direction and the length extension direction of the second section 14 are arranged in a zigzag shape. The first port 11 is located on the first section 13 and the second port 12 is located on the second section 14 .

Specifically, since spraying and flushing are required in the flue 1, in order to reduce the area of the wet and dry interface area, the flue 1 is divided into a first section 13 and a second section 14, so that the first section 13 and the second section 14 are arranged in a zigzag shape, so that the cavity of the first section 13 and the cavity of the second section 14 do not penetrate in one direction, so as to prevent the spraying and flushing medium in the distribution flue 1 from Diffusion between different segments.

In some embodiments, in the longitudinal section of the flue 1 , the second section 14 extends in a horizontal direction, and one end of the first section 13 close to the first port 11 is inclined upward relative to the second section 14 .

Specifically, in addition to preventing the diffusion of the medium distributed in the flue 1, it is also necessary to prevent the medium sprayed on the side walls of the flue 1 from spreading along the side walls of the flue 1. Therefore, the second section 14 is The length extension direction is arranged horizontally, and the end of the first section 13 close to the first port 11 is tilted upward so that the first cooling medium and the flushing medium converge to the second section 14, so that the wet and dry junction area is concentrated in the second section 14. Among the two sections 14, the length extension direction of the second section 14 is the left-right direction in the figure.

In order to optimize the flow field distribution of the flue gas at the second port 12 of the flue 1 and avoid the spray and flushing media from converging in the second section 14, in some embodiments, in the vertical direction, that is, in the figure In the up-down direction, one end of the lower panel 142 of the second section 14 close to the second port 12 is inclined downward, so that the spray or flushing medium located on the lower panel 142 of the second section 14 can quickly flow out of the second section 14 . The second section 14 avoids fouling caused by staying in the second section 14 for a long time.

As shown in FIGS. 3 and 4 , in some embodiments, the spray component 2 is provided in the second section 14 , and the spray component 2 includes multiple groups of spray units along the second section 14 are arranged at intervals in the length extension direction, and each group of spray units includes a plurality of spray pipes 21. The spray pipes 21 extend along a first direction, and the first direction is orthogonal to the vertical direction and the length extension direction of the second section 14. , a plurality of spray pipes 21 in each group of spray units are arranged at vertical intervals, and all the spray pipes 21 in the spray component 2 are arranged in a staggered manner in the vertical direction.

That is to say, the spray component 2 is provided in the second section 14 to prevent the wet and dry transition area from extending into the first section 13. The length of the second section 14 extends in the left and right direction in the figure, vertically. The direction is the up and down direction in the figure, and the first direction is the front and rear direction in the figure.

Furthermore, the arrangement of multiple groups of spray units can achieve multiple step-by-step cooling of the flue gas. The purpose of arranging multiple spray pipes 21 in the vertical direction is to prevent part of the flue gas distributed in the flue 1 from being unable to interact with the flue gas. The first cooling medium of the spray is in contact to improve the cooling effect of the flue gas.

Optionally, all the spray pipes 21 in the spray component 2 are arranged at equal intervals in the vertical direction. That is to say, no matter which area of the flue gas flows from the flue 1, it can receive the first spray. The cooling medium is cooled to reduce the dead angle of the spray and improve the flue gas cooling effect.

Figures 5 and 6 show three groups of spray units arranged at intervals. Each group of spray units is provided with three spray pipes 21. The nine spray pipes 21 in the three groups of spray units are arranged at equal intervals in the vertical direction. .

Figures 7 and 8 show three groups of spray units arranged at intervals. Each group of spray units is provided with two spray pipes 21. The six spray pipes 21 in the three groups of spray units are arranged at equal intervals in the vertical direction. .

Optionally, in order to achieve the spraying effect of the spray component 2 and make the sprayed first cooling medium relatively uniform, a spray head 23 is arranged on the spray pipe 21 to atomize the sprayed first cooling medium. To improve the contact effect between flue gas and the first cooling medium.

Optionally, in order to prevent the first cooling medium from spreading to the first port 11 of the first flue 1 , the spray direction on the spray pipe 21 is arranged toward the second port 12 .

As shown in Figure 4, in some embodiments, the support component 3 has a first cavity, and the flue gas in the flue 1 is cooled by passing a second cooling medium into the first cavity.

That is to say, in order to further improve the cooling effect of the flue gas, the second cooling medium is introduced into the first cavity of the support member 3 so that the second cooling medium and the flue gas can perform indirect heat exchange. The second cooling medium can recycle heat energy.

Optionally, the second cooling medium can be normal temperature water, cooled cooling water, air, etc., and the heat energy of the heat-exchanged water or air can be recycled.

As shown in Figures 1 and 2, in some embodiments, the support component 3 is detachably connected to the flue 1. In the vertical direction, the upper panel 141 of the flue 1 is provided with a first installation opening, and the flue 1 The lower panel 142 is provided with a second installation port, and the support component 3 is inserted into the flue 1 through the first installation port. The support component 3 includes a pipe body 31, a connecting plate 32, a first connecting pipe 33 and a second connecting pipe 34. The pipe The body 31 has a first end and a second end. The connecting plate 32 is provided at the first end of the pipe body 31. The connecting plate 32 is in close contact with the upper panel 141 and connected through the first connecting piece 35. The tube 33 is provided on the connecting plate 32. The first connecting tube 33 is connected with the first cavity of the support part. The second connecting tube 34 is arranged on the second end of the tube body 31. The second connecting tube 34 passes through the second installation The second connecting pipe 34 is provided with a threaded section, and the threaded section is provided with a second connecting piece 36.

Since the support component 3 is located in the dry-wet transition area, it is easy to scale in this area. Although the area is periodically flushed by the flushing component 4, it can only slow down the scaling. In order to facilitate cleaning of this area, the area can be cleaned easily. The support part 3 is detachably connected to the flue 1. When it is necessary to clean the inside of the flue 1, the support part 3 can be detached from the flue 1.

Further, as shown in Figure 9, a connecting plate 32 is provided at one end of the supporting member 3 and is connected to the side wall of the flue 1 through the connecting plate 32. The size of the connecting plate 32 is larger than the first installation opening to prevent the supporting member 3 from being After being transferred into the flue 1, a second connecting pipe 34 is provided at the other end of the supporting member 3. A threaded section is provided on the second connecting pipe 34. The second connecting piece 36 is supported on the outside of the flue 1 so that the flue 1 can be The upper panel 141 and the lower panel 142 provide a pulling force to avoid deformation of the flue 1 and can reinforce the structure of the flue 1. The second cooling medium enters the first cavity through the first connecting pipe 33 and passes through the second The connecting pipe 34 discharges the second cooling medium from the first cavity to achieve indirect heat exchange between the second cooling medium and the flue gas in the flue 1 .

As shown in FIG. 4 , in some embodiments, along the flow direction of the flue gas, the cross-sectional size of the middle part of the supporting member 3 is larger than the cross-sectional size of both ends of the supporting member 3 .

In other words, the change in the cross-sectional size of the support member 3 can reduce the blocking effect of the support member 3 on the smoke and facilitate the flow field distribution of the smoke. The distribution of the smoke flow field can avoid long-term adhesion of spray and flushing media. on the supporting component 3.

Optionally, the cross section of the support member 3 is rhombus or oval.

As shown in FIGS. 5 to 8 , in some embodiments, the flushing component 4 includes a plurality of flushing pipes 41 , the flushing pipes 41 extend along the spacing direction of the plurality of supporting components 3 , and the plurality of flushing pipes 41 are vertically spaced apart. , the flushing pipe 41 is provided with flushing holes corresponding to each supporting member 3 .

Since the support component 3 is close to the inner cavity of the absorption tower, the support component 3 is in the dry-wet transition area, and scaling is more obvious. Therefore, the flushing component 4 is provided so that the flushing component 4 can periodically flush the support component 3, so as to Avoid structures in this area to extend the maintenance cycle.

In the embodiment of the present invention, both the first cooling medium and the flushing medium in the flushing pipe 41 are water. Therefore, the flushing component 4 and the spraying component 2 can use one water delivery pipe 22 for water delivery, or two water delivery pipes can be provided. 22 water supply respectively.

The desulfurization absorption tower in the embodiment of the present invention includes a tower body 5, the flue 1 component in any of the above embodiments, a first driving part, a second driving part and a control unit. The tower body 5 has a smoke inlet, and the smoke inlet is The channel 1 assembly is located at the smoke inlet. The first driving part is connected to the spray component 2 to deliver the first cooling medium to the spray component 2. The second driving part is connected to the flushing component 4 to deliver the first cooling medium to the flushing component 4. The flushing medium is transported, and the control unit is connected to the second driving part to control the second driving part to start and stop periodically.

Optionally, when the first cooling medium and the flushing medium in the flushing pipe 41 are both water, the first driving part and the second driving part can be shared, that is, one water pump is provided.

Optionally, in order to facilitate the control of the spray component and the flushing component respectively, the first driving part and the second driving part are respectively provided. At this time, the flushing component and the spraying component are respectively connected to a water pipe, and the first driving part Both the second driving part and the second driving part are water pumps, and the second driving part is connected to the flushing component 4. The water pressure provided by the second driving part can be relatively large to improve the flushing effect on the corresponding area. The control unit includes a control switch and a timer. The timer periodically turns on or off the control switch. For example, the timer controls the switch to turn on once every hour, and the single turn-on time is 5 minutes to achieve the cycle. Perform automatic flushing permanently.

When the second cooling medium is introduced into the support member 3 , a third driving part may be provided. The third driving part may be a fan or a water pump to transport wind or water to the first cavity of the support member 3 .

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Axis", "Radial", "Circumferential" The indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation or a specific orientation. The azimuth structure and operation cannot be understood as limitations of the present utility model.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

In this utility model, unless otherwise expressly stipulated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be mechanical connection, electrical connection or communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction between two elements , unless otherwise expressly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise expressly stipulated and limited, the first feature "on" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in direct contact through an intermediate medium. indirect contact. Furthermore, the terms "above", "above" and "above" the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "below" and "beneath" the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.

In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean specific features, structures, materials described in conjunction with the embodiment or examples. Or features are included in at least one embodiment or example of the invention. In this specification, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification unless they are inconsistent with each other.

Although the above embodiments have been shown and described, it can be understood that the above embodiments are illustrative and should not be construed as limitations of the present invention. Changes, modifications, substitutions and changes to the above embodiments may be made by those of ordinary skill in the art. All modifications are within the protection scope of the present utility model.

Claims (10)

1. A flue assembly, comprising:

the flue is provided with a first port and a second port, and the flue gas is discharged from the second port after entering the flue through the first port;

the spraying component is arranged in the cavity of the flue and is used for spraying a first cooling medium into the flue so as to cool the flue gas in the flue;

the support parts extend vertically and are arranged at the second port of the flue in parallel at intervals so as to divide the second port of the flue into a plurality of flow channels;

and the flushing component is arranged in the cavity close to the second port in the flue and is used for spraying a flushing medium to the supporting component so as to flush the supporting component.

2. The flue assembly of claim 1 wherein the flue has a first section and a second section, the first section and the second section communicating, the length extension of the first section and the length extension of the second section being arranged in a polyline, the first port being located on the first section and the second port being located on the second section.

3. The flue assembly of claim 2 wherein said second section extends in length in a horizontal direction in a longitudinal section of said flue, an end of said first section adjacent said first port being inclined upwardly relative to said second section.

4. The flue assembly of claim 2 wherein an end of the lower panel of the second section proximate the second port is disposed obliquely downward in a vertical direction.

5. The flue assembly of any one of claims 2 to 4 wherein the spray members are provided in the second section, the spray members include a plurality of groups of spray units, the groups of spray units being spaced apart along the length extension of the second section, each group of spray units including a plurality of spray pipes extending in a first direction, the first direction being orthogonal to both the vertical direction and the length extension of the second section, the plurality of spray pipes in each group of spray units being spaced apart vertically, all spray pipes in the spray members being staggered vertically.

6. The flue assembly of claim 1 wherein the support member has a first cavity and the flue gas in the flue is cooled by passing a second cooling medium into the first cavity.

7. The flue assembly of claim 6 wherein said support member is removably connected to said flue with a first mounting opening provided in an upper panel of said flue in a vertical orientation and a second mounting opening provided in a lower panel of said flue, said support member being inserted into said flue through said first mounting opening, said support member comprising:

a tube having a first end and a second end;

the connecting plate is arranged at the first end part of the pipe body, is abutted against the upper panel in a fitting way and is connected through a first connecting piece;

the first connecting pipe is arranged on the connecting plate and is communicated with the first cavity of the supporting part;

the second connecting pipe is arranged at the second end part of the pipe body, the second connecting pipe penetrates through the second mounting opening, a threaded section is arranged on the second connecting pipe, and a second connecting piece is arranged on the threaded section.

8. The flue assembly of claim 6 or 7 wherein the cross-sectional dimension of the middle portion of the support member is greater than the cross-sectional dimension of the ends of the support member in the direction of flow of the flue gas.

9. The flue assembly of claim 1 wherein the flushing means includes:

the flushing pipes extend along the interval arrangement direction of the supporting parts, the flushing pipes are vertically arranged at intervals, and flushing holes corresponding to the supporting parts are formed in the flushing pipes.

10. A desulfurization absorbing tower, characterized by comprising:

the tower body is provided with a smoke inlet;

the flue assembly of any one of claims 1 to 9, the flue assembly being provided at the smoke inlet;

a first driving part connected with the spray member to convey a first cooling medium into the spray member;

a second driving part connected with the flushing member to convey a flushing medium into the flushing member;

the control unit is connected with the second driving part to control the second driving part to start and stop periodically.