CN220758692U

CN220758692U - Overflow exhaust spraying device of absorption tower and absorption tower

Info

Publication number: CN220758692U
Application number: CN202322472013.6U
Authority: CN
Inventors: 李洋洋; 张迎军; 徐玉国
Original assignee: Guoneng Longyuan Environmental Protection Co Ltd
Current assignee: Guoneng Longyuan Environmental Protection Co Ltd
Priority date: 2023-09-12
Filing date: 2023-09-12
Publication date: 2024-04-12
Anticipated expiration: 2033-09-12

Abstract

The utility model relates to the field of wet flue gas desulfurization, and discloses an overflow exhaust spraying device of an absorption tower and the absorption tower. This absorption tower overflow exhaust spray set, including overflow blast pipe and spray assembly, overflow blast pipe has inlet, class overflow mouth and gas vent, the position below the design liquid level of absorption tower can be connected to the inlet, the height of gas vent is higher than the height of inlet and orientation are upwards, the height of class overflow mouth is less than the height of inlet and orientation are downwards, spray assembly's delivery port orientation breather pipe's export setting. The utility model can prevent the too high liquid level of the slurry from flowing back into the inlet flue of the absorption tower, and the spray assembly is used for physical defoaming, so as to press foam overflow and prevent the foam overflow from causing environmental pollution, thereby not only obviously improving the defoaming effect, but also saving the cost and reducing the workload of later maintenance.

Description

Overflow exhaust spraying device of absorption tower and absorption tower

Technical Field

The utility model relates to the field of wet flue gas desulfurization, in particular to an overflow exhaust spraying device of an absorption tower and the absorption tower.

Background

In limestone-gypsum wet desulfurization, the absorber circulating slurry pond is arranged at the lower half part of the absorber, is a relatively independent slurry pond, and is blown with larger oxidized wind. In order to prevent the slurry from flowing back to the inlet flue of the absorption tower after the liquid level of the absorption tower is too high, thereby threatening the operation safety of equipment such as a boiler induced draft fan and the like, an overflow exhaust pipe of the absorption tower is arranged on the side wall of the absorption tower, and the circulating slurry of the absorption tower is easy to foam due to the fact that the components of the slurry change along with the condition of fire coal and the like. When the slurry foams, the foam overflows through an exhaust port at the top of an overflow pipe of the slurry tank, so that the environment is polluted, and the civilized production is influenced.

In order to solve the problem, in the prior art, a mode of lifting the exhaust port and adding a mechanical baffle or a foam remover is generally adopted, so that more pipeline materials are consumed, the cost is high, but foam removal is not thorough and has poor effect, foam is attached to the mechanical baffle or the foam remover after being dried and is accumulated continuously, the pipeline is possibly blocked, and the overflow exhaust pipe cannot realize the function.

Disclosure of Invention

The utility model aims to solve the problem of bubbling of an overflow exhaust pipe of an absorption tower in the prior art, and provides an overflow exhaust spraying device of the absorption tower and the absorption tower.

The first aspect of the disclosed embodiments provides an overflow exhaust spraying device of an absorption tower, which comprises an overflow exhaust pipe and a spraying assembly, wherein the overflow exhaust pipe is provided with a liquid inlet, an overflow port and an exhaust port, the liquid inlet can be connected to a position below the designed liquid level of the absorption tower, the height of the exhaust port is higher than that of the liquid inlet and faces upwards, the height of the overflow port is lower than that of the liquid inlet and faces downwards, the overflow exhaust pipe comprises a first horizontal section, a vertical section, a second horizontal section and a vertically extending vent pipe, one end of the first horizontal section is provided with the liquid inlet, the lower end of the vertical section is connected to the other end of the first horizontal section, one end of the second horizontal section is connected to the upper end of the vertical section, the lower end of the vent pipe is connected to the other end of the second horizontal section, and a water outlet of the spraying assembly faces towards the outlet of the vent pipe.

In some embodiments, the overflow vent pipe further comprises a drain pipe circumscribing the vertical section, the drain pipe being provided with the overflow port.

In some embodiments, the drain pipe includes a horizontal portion that is flanked by the vertical segments, and a vertical portion that is connected to the horizontal portion and extends downward, the flow overflow being disposed at a lower end of the vertical portion.

In some embodiments, the spray assembly includes a spray header and a water inlet tube, the spray header being provided with a water inlet and a water outlet, the water inlet being connected to the water inlet tube.

In some embodiments, the spray assembly further comprises a flow regulator.

In some embodiments, the spray assembly further comprises a booster pump.

In some embodiments, the showerhead employs a tapered nozzle.

In some embodiments, the spray assembly is provided with electrical heat tracing.

In some embodiments, the spray assembly is provided with a timing switch thereon.

A second aspect of the disclosed embodiments provides an absorption tower, which is characterized by comprising a tower body and an absorption tower overflow exhaust spraying device according to any one of the above schemes, wherein the overflow exhaust pipe is vertically connected to a side wall of the tower body.

Through above-mentioned technical scheme, set up overflow blast pipe, avoid the too high refluence of liquid level of thick liquid to advance the absorption tower entry flue, set up the spray assembly in the top of overflow blast pipe simultaneously, make its delivery port towards the export of breather pipe, spray the physical defoaming to the mouth of pipe water spray of breather through the spray assembly, the suppression foam is excessive, prevents that the foam from overflowing and causing environmental pollution, not only makes defoaming effect show and promotes, has still saved the cost, has reduced the work load of later maintenance.

Drawings

Fig. 1 is a schematic view of the structure of an absorber in the embodiment of the present utility model.

Description of the reference numerals

1. First horizontal section of overflow exhaust pipe 11

12. Vent pipe 13 drain pipe

14. Second horizontal section of vertical section 15

2. Spray header of spray assembly 21

22. Inlet tube 211 water inlet

212. Water outlet 3 tower body

Detailed Description

Embodiments of the present disclosure are described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the disclosure and not to limit the scope of the disclosure, which may be embodied in many different forms and not limited to the specific embodiments disclosed herein, but rather to include all technical solutions falling within the scope of the claims.

The present disclosure provides these embodiments in order to make the present disclosure thorough and complete, and fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments should be construed as exemplary only and not limiting unless otherwise specifically stated.

In the description of the present disclosure, unless otherwise indicated, the meaning of "plurality" is greater than or equal to two; the terms "upper," "lower," "left," "right," "inner," "outer," and the like indicate an orientation or positional relationship merely for convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present disclosure. When the absolute position of the object to be described is changed, the relative positional relationship may be changed accordingly.

Furthermore, the use of the terms first, second, and the like in this disclosure do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error. The word "comprising" or "comprises" and the like means that elements preceding the word encompass the elements recited after the word, and not exclude the possibility of also encompassing other elements.

It should also be noted that, in the description of the present disclosure, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the present disclosure may be understood as appropriate by those of ordinary skill in the art. When a particular device is described as being located between a first device and a second device, there may or may not be an intervening device between the particular device and either the first device or the second device.

All terms used in the present disclosure have the same meaning as understood by one of ordinary skill in the art to which the present disclosure pertains, unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification.

The first aspect of the disclosed embodiments provides an overflow exhaust spraying device for an absorption tower, which comprises an overflow exhaust pipe 1 and a spraying assembly 2, wherein the overflow exhaust pipe 1 is provided with a liquid inlet, a flow overflow port and an exhaust port, the liquid inlet can be connected to a position below the design liquid level of the absorption tower, the height of the exhaust port is higher than that of the liquid inlet and faces upwards, the height of the flow overflow port is lower than that of the liquid inlet and faces downwards, and a water outlet 212 of the spraying assembly 2 is arranged towards an outlet of a vent pipe 12.

The thick liquid overflows from the position below the design liquid level of absorption tower, gets into overflow blast pipe 1 from the inlet that is connected with the position below the design liquid level, overflow blast pipe 1 still includes the overflow mouth, and the height of overflow mouth is less than the height of inlet for the thick liquid flows to the overflow mouth through overflow blast pipe 1, and the overflow mouth is directed downwards and is inserted into the trench, thereby makes the direct inflow trench of thick liquid, prevents the too high refluence of liquid level of thick liquid and gets into absorption tower inlet flue, avoids causing the pollution to the surrounding environment simultaneously. The top of overflow blast pipe 1 is provided with the gas vent, make the inside and the outside intercommunication of overflow blast pipe 1, the high and orientation of gas vent is higher than the height of inlet upwards, in order to avoid the foam that the thick liquids played to spill over from the gas vent, cause environmental pollution and overflow blast pipe to block up, set up spray assembly 2 in the gas vent top, make spray assembly 2's delivery port orientation gas vent so as to spray, carry out physical defoaming, the suppression foam is excessive, prevent that the foam from overflowing and cause environmental pollution, and avoid the foam to adhere to in the gas vent department after drying up, not only make defoaming effect show promotion, still saved the cost, the work load of later maintenance has been reduced.

In some embodiments, the overflow exhaust pipe 1 further includes a first horizontal section 11 and a vertical section 14, one end of the first horizontal section 11 is provided with the liquid inlet, and the lower end of the vertical section 14 is connected to the other end of the first horizontal section 11. The slurry in the absorption tower enters the first horizontal section 11 from the position below the designed liquid level of the absorption tower through the liquid inlet, flows into the vertical section 14 which is connected with the first horizontal section and vertically extends upwards, and flows out from the overflow port, so that the slurry in the absorption tower is prevented from flowing back into the inlet flue due to overhigh liquid level, and the safety of the flue and the fan is protected.

In some embodiments, the overflow exhaust pipe 1 further comprises a drain pipe 13 sideways to the vertical section 14, the drain pipe 13 being provided with the overflow opening. The height of the drain pipe 13 at the inlet is higher than the height of the inlet so that the slurry flows from the inlet into the first horizontal section 11, then into the upwardly extending vertical section 14, and from the drain pipe 13 sideways from the vertical section 14 to the terminal spillway, and then into the trench.

In some embodiments, the drain pipe 13 includes a horizontal portion that is laterally connected to the vertical section 14 and a vertical portion that is connected to the horizontal portion and extends downward, and the overflow port is provided at a lower end of the vertical portion. Slurry flows from the vertical section 14 into the horizontal section and from the horizontal section into the downwardly extending vertical section connected thereto and out through the spillway provided at the end of the vertical section.

In some embodiments, the overflow exhaust pipe 1 further comprises a second horizontal section 15 and a vertically extending vent pipe 12, one end of the second horizontal section 15 is connected to the upper end of the vertical section 14, and the lower end of the vent pipe 12 is connected to the other end of the second horizontal section 15. In order to further avoid the foam overflowing from the top of the overflow exhaust pipe 1, a second horizontal section 15 connected to the upper end of the vertical section 14 is arranged, and the other end of the second horizontal section 15 is connected with a vent pipe 12 extending vertically upwards, so that the foam can be buffered at the second horizontal section 15, overflow is reduced, and pollution is reduced.

In some embodiments, the spray assembly 2 comprises a spray header 21 and a water inlet pipe 22, the spray header 21 being provided with a water inlet 211 and a water outlet 212, the water inlet 211 being connected to the water inlet pipe 22. The spray water flows to the spray header 21 through the water inlet pipe 22, enters the internal flow passage of the spray header from the water inlet 211, flows out from the water outlet 212, and sprays at the outlet of the ventilation pipe 12. The pipe diameter of the inlet pipe 22 is smaller than the pipe diameter of the overflow exhaust pipe 1, in some embodiments, the nominal diameter of the inlet pipe 22 is 10-20mm, which may be 13mm, 15mm, 17mm … … is preferably 15mm, and the nominal diameter of the overflow exhaust pipe 1 is 250-350 mm, which may be 260mm, 280mm, 300mm, 320mm … … is preferably 300mm.

In some embodiments, the spraying assembly 2 further includes a flow regulator, which may be disposed at an end or inside the spraying assembly 2, where sufficient amount of spray water is used to spray when the foam is more, and the flow rate of the spray is reduced when the foam is less, thereby saving water and reducing cost. In some embodiments, the flow regulating piece comprises a first baffle plate and a second baffle plate which are arranged in a fitting way and can rotate relatively, and the size of the overlapping area of the first baffle plate and the second baffle plate is adjusted, so that spray water channels with different cross section sizes are formed. In some embodiments, the flow regulator may employ a flow regulating valve. In some embodiments, the shower head 21 may be provided with a plurality of water outlets 212, and the flow rate and the flushing position of the shower water are adjusted by controlling the opening and closing of different water outlets.

In some embodiments, the spray assembly 2 further comprises a booster pump. When a large amount of water is needed for spraying, a pressurizing pump can be connected to the water inlet pipe 22 so that the spraying force is larger. Meanwhile, the spray water with high pressure can also flush dirt at the outlet of the vent pipe 12.

In some embodiments, the spray header 21 adopts a conical nozzle to ensure the spray area, preferably a hollow conical nozzle, so that the sprayed conical hollow circular water curtain falls at the outlet of the vent pipe 12, physical defoaming is realized, foam is prevented from overflowing, and water is saved.

In some embodiments, the spray assembly 2 is provided with electric tracing to keep the water inlet pipe 22 warm, avoiding freezing during winter, which would affect use.

In some embodiments, the spraying assembly 2 may further be provided with a timing switch, which can turn on spraying at regular time, when the foam floats up to the outlet of the ventilation pipe 12, turn on spraying to perform defoaming, and when the foam is not yet filled up to the outlet of the ventilation pipe 12, turn off spraying, so as to save water cost.

A second aspect of the disclosed embodiments provides an absorption tower, which comprises a tower body 3 and the overflow exhaust spraying device of the absorption tower according to the above scheme, wherein the overflow exhaust pipe 1 is arranged outside the tower body 3 and is vertically connected to the side wall of the tower body 3. The inside of the tower body 3 is provided with a cavity for accommodating slurry, and the first horizontal section 11 is vertically connected to the side wall of the tower body 3, so that the overflow exhaust pipe 1 is communicated with the cavity inside the tower body 3.

Thus, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that the foregoing embodiments may be modified and equivalents substituted for elements thereof without departing from the scope and spirit of the disclosure. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. The utility model provides an absorption tower overflow exhaust spray set, its characterized in that, including overflow blast pipe (1) and spray assembly (2), overflow blast pipe (1) have inlet, flow overflow mouth and gas vent, the inlet can be connected in the position below the design liquid level of absorption tower, the height of gas vent is higher than the height of inlet and orientation upwards, the height of flow overflow mouth is less than the height of inlet and orientation downwards, overflow blast pipe (1) include first horizontal segment (11), vertical section (14), second horizontal segment (15) and vertically extended breather pipe (12), the one end of first horizontal segment (11) is provided with the inlet, the lower extreme of vertical section (14) connect in the other end of first horizontal segment (11), the one end of second horizontal segment (15) connect in the upper end of vertical section (14), the lower extreme of breather pipe (12) connect in the other end of second horizontal segment (15), spray assembly (212) orientation spray assembly (212).

2. The absorber overflow exhaust spraying device according to claim 1, characterized in that the overflow exhaust pipe (1) further comprises a drain pipe (13) sideways to the vertical section (14), the drain pipe (13) being provided with the overflow port.

3. The absorber overflow vent spray device of claim 2 wherein the drain pipe (13) comprises a horizontal portion that is flanked by the vertical section (14) and a vertical portion that is connected to the horizontal portion and extends downward, the flow-over opening being disposed at a lower end of the vertical portion.

4. The absorber overflow exhaust spraying device according to claim 1, wherein the spraying assembly (2) comprises a spraying head (21) and a water inlet pipe (22), the spraying head (21) is provided with a water inlet (211) and a water outlet (212), and the water inlet (211) is connected with the water inlet pipe (22).

5. The absorber overflow vent spray device of claim 4 wherein the spray assembly (2) further comprises a flow regulator.

6. The absorber overflow vent spray device of claim 4 wherein the spray assembly (2) further comprises a booster pump.

7. The absorber overflow vent spray device of claim 4 wherein said spray header (21) employs a tapered nozzle.

8. The absorber overflow vent spray device of claim 4 wherein the spray assembly (2) is provided with electrical heat tracing.

9. The absorber overflow exhaust spray device as claimed in claim 4, wherein a timing switch is provided on the spray assembly (2).

10. An absorption tower, characterized by comprising a tower body (3) and an absorption tower overflow exhaust spraying device as claimed in any one of claims 1-9, wherein the overflow exhaust pipe (1) is vertically connected to the side wall of the tower body (3).