CN212440747U - Turbulent flow effect-improving device in desulfurizing tower - Google Patents
Turbulent flow effect-improving device in desulfurizing tower Download PDFInfo
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- CN212440747U CN212440747U CN201922458850.7U CN201922458850U CN212440747U CN 212440747 U CN212440747 U CN 212440747U CN 201922458850 U CN201922458850 U CN 201922458850U CN 212440747 U CN212440747 U CN 212440747U
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Abstract
The utility model provides a turbulent flow carries imitates device in desulfurizing tower, including tower body and turbulent flow device, the tower body includes body of the tower, air inlet and gas outlet, and the inside of tower body is provided with multilayer spray set, is provided with the takeover that admits air of echelonment on the tower body, and the turbulent flow device includes entry turbulent flow device and sprays the turbulent flow device, and entry turbulent flow device includes first turbulent flow and second turbulent flow, sprays the turbulent flow device and includes the spoiler, and the top and the below of spoiler are provided with guide plate and lower guide plate, and the centre of spoiler is provided with the air flow distributor, and the air flow distributor includes multilayer air flow distribution net. The utility model can make the gas move to the sprayed slurry by using the turbulence device, and the airflow distributor can improve the uniformity of the airflow in the desulfurizing tower, improve the contact probability of the flue gas and the slurry, and further improve the desulfurizing efficiency; the air inlet connecting pipe can reduce the impact of the flue gas on the desulfurizing tower, and is favorable for improving the desulfurizing efficiency.
Description
Technical Field
The utility model belongs to the technical field of flue gas treatment facility, especially, relate to a turbulent flow carries and imitates device in desulfurizing tower.
Background
At present, the requirement of China on the flue gas desulfurization of thermal power plants is high, and dozens of desulfurization technologies are developed and practically applied. The wet-process desulfurization process is most applied and accounts for about 85 percent of the total amount of the desulfurization machine. The flue gas system of wet desulphurization is relatively complicated, a guide plate and a rectifier are additionally arranged in a flue and the size of the flue is changed to achieve the effect of stabilizing the flow in the conventional design, so that the alkaline washing effect of the flue gas entering the tower is further improved, and the reaction rate of sulfur dioxide and alkaline liquid drops in the flue gas and the system resistance are influenced to a great extent by the internal structure of a desulphurization tower which is a core device of wet desulphurization.
In the prior art, a desulfurization tower for wet desulfurization is generally in a straight cylinder shape, alkaline slurry is conveyed to spray layer nozzles at different heights through a slurry circulating pump for dispersion injection, and meanwhile, flue gas flows upwards in a counter-current manner, and gas and liquid are contacted and mixed, so that an internal flow field belongs to a gas-liquid-solid three-phase mixed flow field, and influence factors influencing the distribution of the flow field and a temperature field are various, such as boiler load, the shape of an inlet flue, the liquid level height of a slurry pool area, the internal structure of the desulfurization tower and the spray effect. The flue gas flow field and the temperature field in the desulfurizing tower have great influence on the desulfurizing efficiency, and the reasonable arrangement of the turbulence device can have positive influence on the flue gas desulfurization.
SUMMERY OF THE UTILITY MODEL
The utility model provides a reasonable in design to the problem that above-mentioned desulfurizing tower exists in the aspect of flue gas desulfurization, simple structure is favorable to improving the turbulent flow in desulfurizing tower of desulfurization efficiency and carries and imitate device.
In order to achieve the above object, the present invention adopts the technical solution that the utility model provides an inner turbulence efficiency improving device of a desulfurizing tower, comprising a tower body and a turbulence device, wherein the tower body comprises a tower body, an air inlet and an air outlet, the tower body is internally provided with a plurality of layers of spray devices distributed from top to bottom, the position on the tower body corresponding to the air inlet is provided with a step-shaped air inlet connection pipe, the air inlet connection pipe comprises a big end and a small end, the big end is connected with the tower body, the turbulence device comprises an inlet turbulence device and a spray turbulence device, the inlet turbulence device is arranged inside the tower body and positioned below the air inlet, the inlet turbulence device comprises a first turbulence fluid and a second turbulence fluid which are arranged around the inner wall of the tower body and staggered from top to bottom, the cross-sectional shapes of the first turbulence fluid and the second turbulence fluid are parabolic, the spray turbulence device comprises a turbulence plate arranged around the inner wall of the tower body, the air flow distribution device comprises a spoiler, and is characterized in that an upper guide plate and a lower guide plate which are respectively connected with the spoiler in a cross manner are arranged above and below the spoiler, an air flow distributor is arranged in the middle of the spoiler, and the air flow distributor comprises a plurality of layers of air flow distribution nets.
Preferably, the included angle between the spoiler and the horizontal plane is 15 degrees, the radial width of the lower guide plate is smaller than that of the spoiler, and the included angle between the lower guide plate and the horizontal plane is 15-90 degrees.
Preferably, the multilayer air flow distribution net comprises at least three layers and the mesh openings of the air flow distribution net positioned at the lower layer are larger than the mesh openings of the air flow distribution net positioned at the upper layer.
Preferably, the plate surface of the upper guide plate is provided with guide grooves distributed in the radial direction.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect:
the utility model provides a turbulent flow in desulfurizing tower carries effect device utilizes entry turbulent flow device and sprays turbulent flow device can make gas move to the thick liquid that sprays, and the air current distributor can improve the homogeneity of air current in the desulfurizing tower moreover, has improved the contact probability of flue gas and thick liquid, and then has improved desulfurization efficiency; meanwhile, the air inlet connecting pipe can reduce the impact of the flue gas on the desulfurizing tower and is favorable for improving the desulfurizing efficiency. The utility model relates to a rationally, simple structure, be fit for extensive popularization.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic structural diagram of a turbulent flow effect-improving device in a desulfurization tower according to an embodiment;
FIG. 2 is an enlarged schematic view of the structure A in FIG. 1 according to an embodiment;
in the above figures, 1, a tower body; 2. a flow disturbing device; 21. an inlet turbulator; 21a, a first fluid disturbing body; 21b, a second fluid disturbing body; 22. a spraying and flow-disturbing device; 22a, a spoiler; 22b, an upper deflector; 22c, a lower deflector; 22d, a diversion trench; 3. a spraying device; 4. an air inlet connecting pipe; 5. an air flow distributor; 51. an airflow distribution network.
Detailed Description
In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" used herein refer to the same directions as the drawings, and do not limit the structure.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.
The embodiment, as shown in fig. 1 and fig. 2, the utility model provides a turbulence extracting device in a desulfurizing tower, which comprises a tower body 1 and a turbulence device 2, wherein the tower body 1 comprises a tower body, an air inlet and an air outlet, a plurality of layers of spray devices 3 distributed up and down are arranged in the tower body 1, a step-shaped air inlet connecting pipe 4 is arranged at the position corresponding to the air inlet on the tower body 1, the air inlet connecting pipe 4 comprises a big end and a small end, the big end is connected with the tower body, the turbulence device 2 comprises an inlet turbulence device 21 and a spray turbulence device 22, the inlet turbulence device 21 is arranged in the tower body and is positioned below the air inlet, the inlet turbulence device 21 comprises a first turbulence fluid 21a and a second turbulence fluid 21b which are arranged around the inner wall of the tower body and are staggered up and down, the cross-sectional shapes of the first turbulence fluid 21a and the second turbulence fluid 21b are parabolic, the spray turbulence device 22 comprises a turbulence plate 22a arranged around the, an upper guide plate 22b and a lower guide plate 22c which are respectively connected with the spoilers 22a in a cross way are arranged above and below the spoilers 22a, an air flow distributor 5 is arranged in the middle of each spoiler, and each air flow distributor 5 comprises a plurality of layers of air flow distribution nets 51. The stepped structure of the air inlet connecting pipe 4 is beneficial to reducing the impact of the flue gas on the tower body, avoiding the influence on the connection service life of a welding end caused by the generation of vortex at the air inlet, and avoiding the acceleration of the movement speed of the flue gas on the inner wall of the tower body by the vortex; meanwhile, the device adopts two turbulence structures, wherein one turbulence structure is specific to the flow field at the air inlet of the desulfurizing tower, and the other turbulence structure is specific to the flow field of the spraying part (airflow ascending stage) of the desulfurizing tower.
Specifically, the flue gas enters the desulfurization tower from the gas inlet, and the gas flow moves towards the inner wall of the tower body opposite to the gas flow at an angle, a part of the gas flow moves downwards along the inner wall of the tower body, but is guided to the lower edge of the first turbulent flow 21a by the second turbulent flow 21b, the gas flow at the position can be directly contacted with the slurry at the bottom of the tower body for desulfurization, and the gas for desulfurization can ascend to the gas flow distributor or the spraying turbulent flow device 22 through a cylindrical gap formed by the first turbulent flow 21a and the second turbulent flow 21 b. The lower guide plate 22c in the spraying turbulence device 22 not only plays a role in supporting the turbulence plate, but also can transit the air flow to the turbulence plate 22a, so that the air flow moves to the working area of the spraying device 3 along the turbulence plate 22a, and the contact probability of the flue gas and the spraying slurry is effectively improved through the uniform distribution effect of the air flow distributor 5, the reaction is more sufficient, and the desulfurization efficiency is effectively improved due to the effects of the multilayer spraying devices 3 and the spraying turbulence devices 22. Meanwhile, the airflow distributor 5 of the device adopts a structure of a multilayer airflow distribution net, the airflow distribution effect is good, the contact probability of airflow and slurry is improved, and the denitration effect is good. Part of liquid sprayed by the spraying device 3 falls on the upper guide plate 22b and flows down to the slurry fluid at the bottom of the tower body along the upper guide plate 22b, so that the slurry is prevented from scaling at the spraying turbulence device 22.
Further, the utility model provides a spoiler 22a is 15 degrees with the horizontal plane contained angle, and lower guide plate 22 c's radial width is less than spoiler 22 a's radial width, lower guide plate 22c with the horizontal plane contained angle between 15~90 degrees. Like this, the air current is comparatively smooth along the motion of guide plate 22c and spoiler 22a down, can slow down flue gas velocity of motion moreover, is favorable to improving the area of contact of flue gas and liquid drop, improves the reaction rate of sulfur dioxide and alkali lye in the flue gas. Meanwhile, the spoiler 22a and the lower deflector 22c have stable structures, high strength and long service life.
In order to improve the air current equipartition effect, the utility model provides a multilayer air current distribution net 51 includes the three-layer at least and is located the mesh of the air current distribution net of lower floor and is greater than the mesh of the air current distribution net of upper strata. There is 5~10 mm's clearance between the adjacent air current distribution net, and this clearance can guarantee that the flue gas carries out reasonable dispersion at one deck air current distribution net in the past, like this, utilizes the air current distribution net in different apertures can disperse the flue gas step by step, and dispersion efficiency is high and the equipartition effect is better, is favorable to improving desulfurization efficiency.
In order to promote spray set 3 to fall to the tower body bottom to the liquid on the guide plate, the utility model discloses be provided with radial distribution's guiding gutter 22d on the face of last guide plate 22b, utilize guiding gutter 22d to play the effect that converges and make the thick liquid after converging leave the guide plate comparatively smoothly.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (4)
1. A turbulence extracting effect device in a desulfurizing tower comprises a tower body and a turbulence device, wherein the tower body comprises a tower body, an air inlet and an air outlet, a plurality of layers of spraying devices which are distributed up and down are arranged in the tower body, the turbulence device is characterized in that a step-shaped air inlet connecting pipe is arranged at a position corresponding to the air inlet on the tower body, the air inlet connecting pipe comprises a big end and a small end, the big end is connected with the tower body, the turbulence device comprises an inlet turbulence device and a spraying turbulence device, the inlet turbulence device is arranged in the tower body and is positioned below the air inlet, the inlet turbulence device comprises a first turbulence body and a second turbulence body which are arranged around the inner wall of the tower body and are staggered up and down, the cross sections of the first turbulence body and the second turbulence body are in a parabola shape, the turbulence spraying device comprises a turbulence plate arranged around the inner wall of the tower body, an upper flow guide plate and a lower flow guide plate which are respectively and are in cross connection with the, and an air flow distributor is arranged in the middle of the spoiler and comprises a plurality of layers of air flow distribution nets.
2. The turbulence lift device as recited in claim 1, wherein the angle between the spoiler and the horizontal plane is 15 degrees, the radial width of the lower deflector is smaller than the radial width of the spoiler, and the angle between the lower deflector and the horizontal plane is 15-90 degrees.
3. The turbulence promoter as recited in claim 2, wherein the plurality of layers of air flow distribution nets comprise at least three layers and the meshes of the air flow distribution nets at the lower layer are larger than those of the air flow distribution nets at the upper layer.
4. The turbulent flow effect-improving device in the desulfurizing tower according to claim 3, wherein the plate surface of the upper guide plate is provided with guide grooves distributed radially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922458850.7U CN212440747U (en) | 2019-12-31 | 2019-12-31 | Turbulent flow effect-improving device in desulfurizing tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922458850.7U CN212440747U (en) | 2019-12-31 | 2019-12-31 | Turbulent flow effect-improving device in desulfurizing tower |
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| CN212440747U true CN212440747U (en) | 2021-02-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117358052A (en) * | 2023-10-25 | 2024-01-09 | 北京中科辉丰科技有限公司 | Flue gas equipartition board |
-
2019
- 2019-12-31 CN CN201922458850.7U patent/CN212440747U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117358052A (en) * | 2023-10-25 | 2024-01-09 | 北京中科辉丰科技有限公司 | Flue gas equipartition board |
| CN117358052B (en) * | 2023-10-25 | 2024-04-05 | 北京中科辉丰科技有限公司 | Flue gas equipartition board |
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