CN211635809U

CN211635809U - Absorption tower defroster with self-cleaning function

Info

Publication number: CN211635809U
Application number: CN201922260437.XU
Authority: CN
Inventors: 张凯阁; 任志杰; 卞智健; 费凡
Original assignee: Jiangyin Lianzhong Environmental Protection Engineering Co ltd
Current assignee: Jiangyin Lianzhong Environmental Protection Engineering Co ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-10-09
Anticipated expiration: 2029-12-16

Abstract

The utility model relates to an absorption tower demister with self-cleaning function, which comprises an absorption tower, wherein the absorption tower is internally provided with a demister which comprises a support ring fixedly connected with the inner side wall of the absorption tower, fixed connection is at the intra-annular bracing piece of support bar, the central axis direction of the length direction perpendicular to support ring of bracing piece, it is connected with the axis of rotation to rotate perpendicularly on the bracing piece, be equipped with the defroster blade along the circumference lateral wall of axis of rotation, the defroster blade is equipped with a plurality of along the circumference of axis of rotation, the fixed cover of wearing in upper portion of axis of rotation has first conical gear, the outside of absorption tower is equipped with the motor, the fixed cover of wearing on the output shaft of motor has second conical gear, first conical gear and the linkage of second conical gear, be equipped with the delivery pipe along the length direction of bracing piece, delivery pipe and outside water inlet system intercommunication, be. The utility model discloses have the effect of effectively clearing up thick liquid, dust on the defroster blade.

Description

Absorption tower defroster with self-cleaning function

Technical Field

The utility model belongs to the technical field of the desulfurization technique and specifically relates to an absorption tower defroster with self-cleaning function is related to.

Background

The influence caused by air pollution is increasingly serious, and particularly, flue gas discharged by industrial boilers, industrial kilns, coal-fired power plants and the like contains a large amount of sulfur dioxide which is a main reason for forming acid rain. Meanwhile, sulfur dioxide also has serious damage to human bodies, which can cause respiratory tract damage and organism immunity damage. Therefore, the flue gas discharged by the industrial enterprises needs to be subjected to desulfurization treatment, and the limestone-gypsum wet desulfurization technology is the most widely applied desulfurization technology. The core equipment of the process is an absorption tower, and gas passing through the absorption tower contains moisture, and in addition, sulfuric acid, sulfate, sulfur dioxide and the like are dissolved. Therefore, the purified gas passing through the absorber tower is demisted before leaving the absorber tower.

At present, chinese patent with publication number CN201394416Y discloses a flue gas wet desulphurization absorption tower, which comprises an absorption tower body, the lower part of the absorption tower body is provided with a slurry pool, the middle part is provided with a flue gas inlet, the upper part is provided with a flue gas outlet, a slurry spraying system and a demisting system are sequentially arranged in the absorption tower body from the flue gas inlet to the flue gas outlet, the demisting system is provided with two stages, a flushing water system is arranged between the two stages of demisting systems, and a rectifying device is further arranged between the flue gas inlet and the slurry spraying system.

The defogging system in the device washes the defogging system through the showering system between the defogging systems, and the defogger blades in the defogging system are wavy and are arranged more closely. When actually washing the defroster blade, only wash thick liquid, dust etc. on the defroster blade from the both sides of defogging system, to the place that the space department between the defroster blade exists and wash not to, can lead to there being remaining thick liquid and dust in the space department between the defroster blade to influence defogging system's defogging effect.

Disclosure of Invention

Not enough to prior art exists, the utility model aims at providing an absorption tower defroster with self-cleaning function has the effect of effectively clearing up the thick liquid on the defroster blade, dust and getting off.

The above object of the present invention is achieved by the following technical solutions:

an absorption tower demister with a self-cleaning function comprises an absorption tower, wherein a demister is arranged in the absorption tower, the demister comprises a support ring fixedly connected with the inner side wall of the absorption tower and a support rod fixedly connected in the middle of the support ring, the length direction of the supporting rod is vertical to the central axis direction of the supporting ring, the supporting rod is vertically and rotatably connected with a rotating shaft, the circumferential side wall of the rotating shaft is provided with demister blades, the upper part of the rotating shaft is fixedly connected with a first bevel gear, the outside of the absorption tower is provided with a motor, a second bevel gear is fixedly connected on an output shaft of the motor, the first bevel gear is linked with the second bevel gear, a water supply pipe is arranged along the length direction of the supporting rod, the water supply pipe is communicated with an external water inlet system, a plurality of spray heads are arranged on the water supply pipe, and the spray heads face the demister blades.

Through adopting above-mentioned technical scheme, the defroster is once demisting the process after, can adhere to a lot of thick liquid and dust on the defroster blade, and at this moment, need clear up thick liquid and dust. The staff opens the switch of motor, and motor drive axis of rotation this moment rotates, and the axis of rotation drives the defroster blade and rotates. At this time, liquid and dust on the demister blades move in a direction away from the rotating shaft under the action of centrifugal force, and the liquid and the dust are thrown to the inner side wall of the absorption tower and flow downwards along the inner side wall of the absorption tower. At this moment, the staff opens the switch of outside water intake system, and the shower nozzle sprays water to the defroster blade simultaneously, and the defroster blade washs while rotatory to with the defroster blade sanitization. The utility model discloses a setting of axis of rotation, shower nozzle has the effect of effectively clearing up thick liquid and dust on the defroster blade.

The present invention may be further configured in a preferred embodiment as: the spray head is a horn-shaped hollow cavity, and a plurality of water spray holes are formed in one side, facing the demister blades, of the spray head.

Through adopting above-mentioned technical scheme, tubaeform shower nozzle greatly increased the spray area of shower nozzle to the cleaning performance of blowout rivers to the defroster blade has been improved.

The present invention may be further configured in a preferred embodiment as: the position fixedly connected with connecting seat of connecting the defroster blade on the axis of rotation, pass through connecting piece detachable connection between defroster blade and the connecting seat.

Through adopting above-mentioned technical scheme, the defroster blade is connected with axis of rotation detachable, and when the defroster blade was damaged, the change of the defroster blade of being convenient for.

The present invention may be further configured in a preferred embodiment as: the demister blades are wavy.

Through adopting above-mentioned technical scheme, wavy defroster blade greatly increased the area of contact of the flue gas in defroster blade and the absorption tower, strengthened the defogging effect.

The present invention may be further configured in a preferred embodiment as: and the two sides of the demister blades are respectively and fixedly connected with the sub-blades.

Through adopting above-mentioned technical scheme, divide the setting of blade to reduce the space between two defroster blades to improve the defogging effect.

The present invention may be further configured in a preferred embodiment as: the grid plate is arranged on the rotating shaft in a penetrating mode and arranged below the demister blades, threaded holes are formed in the middle of the grid plate, threads are twisted below the rotating shaft, and the grid plate is sleeved on the rotating shaft in a penetrating mode.

Through adopting above-mentioned technical scheme, the flue gas at first passes through the grid plate between the inflow defroster blade, and the thick liquid striking grid plate that the particle size is big in the flue gas is got off by the entrapment, collects rivers on the grid plate, under the effect of gravity, subsides. The phenomenon that a large amount of slurry and dust are accumulated on the demister blades is reduced, and therefore the cleaning difficulty of the slurry and the dust on the demister blades is reduced.

The present invention may be further configured in a preferred embodiment as: and a hydrophobic coating is coated on the outer part of the demister blade.

Through adopting above-mentioned technical scheme, hydrophobic coating has reduced the frictional force between thick liquid and the defroster blade, has reduced the thick liquid adhesion possibility on the defroster blade in the flue gas.

The present invention may be further configured in a preferred embodiment as: the inner side wall of the absorption tower is fixedly connected with an annular baffle which is arranged on the upper part of the supporting rod.

Through adopting above-mentioned technical scheme, when the shower nozzle was sprayed water to defroster blade mountain, the rivers part that sprays on the defroster blade can upwards kick-back, and the thick liquid etc. that have in the backward flow also can kick-back to the ring baffle on, consequently, the setting of baffle can play the effect of separation to the resilience of rivers.

The present invention may be further configured in a preferred embodiment as: the arc-shaped baffle is obliquely arranged towards the direction of the central axis of the absorption tower.

Through adopting above-mentioned technical scheme, kick-back the rivers on the ring baffle, under the effect of gravity, the central axis that follows ring baffle along ring baffle's incline direction flows down, falls back to the bottom of absorption tower.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the rotating shaft and the spray head are arranged, so that slurry and dust adhered to the demister blades can be thrown to the inner side wall of the absorption tower under the action of centrifugal force, the demister blades can rotate and wash at the same time, and the slurry and dust on the demister blades can be effectively cleaned;

2. due to the arrangement of the grid plate, the effect of collecting and filtering the slurry and dust with large particle size in the flue gas is achieved, and the cleaning difficulty of the later demister blades is reduced;

3. the setting of ring baffle plays the effect of separation on the upper portion of defroster, reduces the rivers rebound phenomenon that makes progress that sprays on the defroster blade.

Drawings

FIG. 1 is a schematic view showing the overall structure of an absorption column used in the embodiment;

FIG. 2 is a schematic sectional view of a demister in accordance with an exemplary embodiment;

FIG. 3 is an enlarged schematic structural view of a portion A in FIG. 2;

FIG. 4 is a schematic cross-sectional view of an embodiment of a demister blade.

In the figure, 1, an absorption tower; 2. a demister; 21. a support ring; 22. a support bar; 3. a rotating shaft; 31. a first bevel gear; 32. a connecting seat; 4. demister blades; 41. dividing blades; 5. a motor; 51. a second bevel gear; 6. a water supply pipe; 61. a spray head; 611. a water spray hole; 7. a grid plate; 8. an annular baffle.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a 1 defroster 2 of absorption tower with self-cleaning function, including absorption tower 1, be equipped with defroster 2 in the absorption tower 1, defroster 2 is including welding support ring 21, the welding bracing piece 22 on support ring 21 of the 1 inside wall of absorption tower. The length direction of the support bar 22 is perpendicular to the central axis direction of the support ring 21, and the length direction of the support bar 22 spans the diameter of the support ring 21.

Referring to fig. 1 and 2, the length center of the support rod 22 is rotatably connected with a rotating shaft 3 through a bearing, demister blades 4 are arranged along the circumferential side wall of the rotating shaft 3, the demister blades 4 are wave-shaped, and the contact area between the flue gas and the demister blades 4 is increased by the aid of the wave-shaped demister blades 4. The upper part of the rotating shaft 3 is fixedly sleeved with a first bevel gear 31 in a penetrating way, a motor 5 is arranged outside the absorption tower 1, a platform is welded on the outer side of the absorption tower 1, and the motor 5 is placed on the platform. The output shaft of the motor 5 is fixedly sleeved with a second bevel gear 51, and under the driving action of the motor 5, the first bevel gear 31 and the second bevel gear 51 are linked, so as to drive the rotating shaft 3 to rotate.

Referring to fig. 3 and 4, since two adjacent demister blades 4 are dispersed in a direction away from the rotating shaft 3, sub-blades 41 are fixedly connected to both sides of the demister blades 4, respectively (the sub-blades 41 are integrally formed with the demister blades 4). The sub-blades 41 can effectively reduce the gap between two adjacent demister blades 4, and improve the demisting effect.

Referring to fig. 2 and 3, a water supply pipe 6 is provided along the length direction of the support rod 22, the water supply pipe 6 is connected to the support rod 22 at a side thereof adjacent to the demister blades 4 by means of a pipe clamp, and the water supply pipe 6 is communicated with an external water intake system. The water supply pipe 6 is provided with a plurality of spray heads 61, and the spray heads 61 face the demister blades 4.

Referring to fig. 1 and 2, after the demister blades 4 complete the demisting process, the demister blades 4 begin to be cleaned. The staff opens the switch of motor 5, and under the drive effect of motor 5, defroster blade 4 revolves the rotation axis 3 rotation, and thick liquid and the dust of defroster blade 4 upper portion are got rid of to the inside wall of absorption tower 1 under the effect of centrifugal force. At this time, the worker turns on the switch of the external water intake system, and at the same time, the spray head 61 sprays water flow into the demister blades 4, and the demister blades 4 are rotated and washed, so that the slurry and dust on the demister blades 4 are effectively washed.

Referring to fig. 3, in order to increase the spray area of the nozzle 61 to the demister blade 4, the nozzle 61 is provided as a hollow chamber having a horn shape, and a plurality of water spray holes 611 are formed on a side of the nozzle 61 facing the demister blade 4. The plurality of water spray holes 611 greatly increase the coverage area of the sprayed water flow, and improve the cleaning effect on the demister blades 4.

Referring to fig. 2, a connecting seat 32 is welded to a position of the rotating shaft 3 where the demister blades 4 are connected, and the demister blades 4 and the connecting seat 32 are detachably connected by bolts. When the defroster blade 4 is damaged, the accessible is unscrewed the bolt and is dismantled defroster blade 4, the change of the defroster blade 4 of being convenient for.

Referring to fig. 2, a grid plate 7 penetrates through the rotating shaft 3, the grid plate 7 is located below the demister blades 4, threaded holes are formed in the middle of the grid plate 7, threads are twisted below the rotating shaft 3, and the grid plate 7 is threaded on the rotating shaft 3 in a penetrating mode. The mesh plate 7 can filter the flue gas before it enters the demister blades 4.

Referring to fig. 2, when the flue gas passes through the grid plate 7, the slurry with larger particle size in the flue gas hits the grid plate 7 and is captured, and the slurry is collected into water flow on the grid plate 7 and sinks under the action of gravity. Thereby the cleaning difficulty of the 4 blades of the demister is reduced.

Referring to fig. 2, in order to reduce the slurry and dust adhering to the demister vanes 4. The outer part of each demister blade 4 is coated with a hydrophobic coating, and the hydrophobic coating is a silicon dioxide super-hydrophobic coating. The silica superhydrophobic coating reduces the friction between the slurry and the demister blades 4, thereby reducing the likelihood of slurry in the flue gas adhering to the demister blades 4.

Referring to fig. 2, when the nozzle 61 injects water into the demister blades 4, the water rebounds upward. Therefore, the inner side wall of the absorption tower 1 is welded with the annular baffle plate 8. The annular baffle 8 is provided above the demister blades 4, and the annular baffle 8 is inclined in the direction of the central axis of the absorption tower 1. The water flow rebounded to the ring-shaped baffle plate 8 falls from the central axis position of the ring-shaped baffle plate 8 along the inclined direction of the ring-shaped baffle plate 8 under the action of gravity and falls back to the bottom of the absorption tower 1.

The implementation principle of the embodiment is as follows: the motor 5 drives the rotating shaft 3 to rotate, and the rotating shaft 3 drives the demister blades 4 to rotate. At this time, the worker turns on the switch of the external water intake system, and the water flow is ejected from the nozzle 61 to the demister blades 4, and the demister blades 4 are cleaned while rotating, so that the slurry and dust on the demister blades 4 are effectively cleaned.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. An absorption tower defroster with self-cleaning function, includes absorption tower (1), its characterized in that: the absorption tower is characterized in that a demister (2) is arranged in the absorption tower (1), the demister (2) comprises a support ring (21) fixedly connected to the inner side wall of the absorption tower (1) and a support rod (22) fixedly connected in the support ring (21), the length direction of the support rod (22) is perpendicular to the central axis of the support ring (21), a rotating shaft (3) is vertically and rotatably connected to the support rod (22), demister blades (4) are arranged on the peripheral wall of the rotating shaft (3), a plurality of demister blades (4) are arranged along the circumferential direction of the rotating shaft (3), a first bevel gear (31) is fixedly sleeved on the upper portion of the rotating shaft (3), a motor (5) is arranged outside the absorption tower (1), a second bevel gear (51) is fixedly sleeved on an output shaft of the motor (5), and the first bevel gear (31) is linked with the second bevel gear (51), a water supply pipe (6) is arranged along the length direction of the support rod (22), the water supply pipe (6) is communicated with an external water inlet system, a plurality of spray heads (61) are arranged on the water supply pipe (6), and the spray heads (61) face the demister blades (4).

2. The demister of absorption tower having self-cleaning function according to claim 1, wherein: the spray head (61) is a horn-shaped hollow cavity, and a plurality of water spray holes (611) are formed in one side, facing the demister blades (4), of the spray head (61).

3. The demister of absorption tower having self-cleaning function according to claim 1, wherein: the position fixedly connected with connecting seat (32) of connecting defroster blade (4) on axis of rotation (3), through connecting piece detachable connection between defroster blade (4) and connecting seat (32).

4. The demister with self-cleaning function for absorption tower according to claim 3, wherein: the demister blades (4) are wavy.

5. The demister with self-cleaning function for absorption tower according to claim 4, wherein: two sides of the demister blades (4) are fixedly connected with sub-blades (41) respectively.

6. The demister of absorption tower having self-cleaning function according to claim 1, wherein: the grid plate (7) penetrates through the rotating shaft (3), the grid plate (7) is located below the demister blades (4), threaded holes are formed in the middle of the grid plate (7), threads are twisted below the rotating shaft (3), and the grid plate (7) is sleeved on the rotating shaft (3) in a threaded penetrating mode.

7. The demister of absorption tower having self-cleaning function according to claim 1, wherein: and a hydrophobic coating is coated on the outer part of the demister blade (4).

8. The demister of absorption tower having self-cleaning function according to claim 1, wherein: the inner side wall of the absorption tower (1) is fixedly connected with an annular baffle (8), and the annular baffle (8) is arranged on the upper portion of the supporting rod (22).

9. The demister of claim 8, wherein: the annular baffle (8) is obliquely arranged towards the direction of the central axis of the absorption tower (1).