CN219964230U

CN219964230U - Defogger scale removal mechanism and flue gas desulfurization tower

Info

Publication number: CN219964230U
Application number: CN202320234933.1U
Authority: CN
Inventors: 赵巍; 郭欣彤; 孙福海; 董帅
Original assignee: Huaneng Yimin Coal and Electricity Co Ltd
Current assignee: Huaneng Yimin Coal and Electricity Co Ltd
Priority date: 2023-02-16
Filing date: 2023-02-16
Publication date: 2023-11-07
Anticipated expiration: 2033-02-16

Abstract

The utility model discloses a defogger scale cleaning mechanism and a flue gas desulfurization tower, wherein the defogger scale cleaning mechanism comprises a scale cleaning component and an angle adjusting component, the scale cleaning component comprises a flushing main pipe, flushing branch pipes and nozzles, the flushing branch pipes are uniformly distributed on two sides of the flushing main pipe and are communicated with the inside of the flushing main pipe, and the nozzles are arranged on the side wall below the flushing branch pipes; the angle adjusting assembly comprises a pipeline rotary joint, a driving piece and a fixing piece, wherein the flushing main pipe is connected with the flushing branch pipe through the pipeline rotary joint, and the driving piece is arranged on the side wall above the flushing main pipe through the fixing piece. According to the scale removal of periodic opening of defroster scale deposit situation, the driving piece drives rotary joint and rotates for wash the nozzle on the branch pipe and can spout the sparge water to different angles, wash the defroster.

Description

Defogger scale removal mechanism and flue gas desulfurization tower

Technical Field

The utility model relates to the field of wet flue gas desulfurization of thermal power plants, in particular to a demister scale cleaning mechanism and a flue gas desulfurization tower.

Background

The solid particles that contain in the liquid drop on the defroster baffle, the time that the thick liquid stays on the blade is longer, will form the dirt layer on the blade surface, will make the scale deposit accelerate when absorbing excessively, when the flue gas flows unevenly in the absorption tower, also can lead to the defroster to scale deposit, and the defroster is in case scale deposit, and the development is just very rapid, and the existence of scale deposit layer has reduced the passage area, leads to the flue gas velocity of flow increase of this department, has increased the risk of secondary carrying. Therefore, the thermal power plant is provided with a fixed pipe network spray washing structure for washing at the demister.

The flushing mode is easy to generate flushing blind areas in the long-term use process, the flushing positions of the flushing mode are basically determined, other areas which are not corresponding to the spraying holes or the water sprayers cannot be flushed completely, the pipeline is easy to generate problems, the efficiency of the demister is reduced, the labor intensity of workers is increased, and if the demister is not timely treated, the demister is collapsed by scale, so that desulfurization is stopped. And, when the existing flue gas desulfurization tower defroster washes the structure and operates, if the washing water yield is too big, the thick liquid takes place overflow easily in the receiver.

Disclosure of Invention

This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model.

The utility model is provided in view of the problems that the demister is easy to scale and has flushing blind areas in the existing demister descaling device.

Therefore, the utility model aims to provide a defogger scale removal mechanism and a flue gas desulfurization tower, which aim to wash a defogger at multiple angles, reduce washing dead angles, clean scaling of the defogger and improve defogging efficiency.

In order to solve the technical problems, the utility model provides the following technical scheme: the defogger scale cleaning mechanism comprises a scale cleaning assembly, a scale cleaning device and a scale cleaning device, wherein the scale cleaning assembly comprises a main washing pipe, branch washing pipes and nozzles, the branch washing pipes are uniformly distributed on two sides of the main washing pipe and are communicated with the inside of the main washing pipe, and the nozzles are arranged on the side wall below the branch washing pipes; the angle adjusting assembly comprises a pipeline rotary joint, a driving piece and a fixing piece, wherein the flushing main pipe is connected with the flushing branch pipe through the pipeline rotary joint, and the driving piece is arranged on the side wall above the flushing main pipe through the fixing piece.

As a preferable scheme of the demister scale cleaning mechanism, the demister scale cleaning mechanism comprises the following components: the pipeline rotary joint comprises a joint shell, a bearing, a spring and a sealing ring, wherein the bearing, the spring and the sealing ring are sleeved at the output end of the flushing main pipe, and one end, far away from the flushing main pipe, of the joint shell is fixed with the flushing branch pipe.

As a preferable scheme of the demister scale cleaning mechanism, the demister scale cleaning mechanism comprises the following components: the driving piece extends out of the two sides in the direction of the flushing branch pipe and is provided with a limiting block, and the limiting rod is matched with the limiting block in structure.

As a preferable scheme of the demister scale cleaning mechanism, the demister scale cleaning mechanism comprises the following components: the nozzle comprises two spray holes, and the spray holes form a certain included angle.

As a preferable scheme of the demister scale cleaning mechanism, the demister scale cleaning mechanism comprises the following components: the outer sides of the pipeline rotary joint and the driving piece are coated with anti-corrosion paint.

As a preferable scheme of the demister scale cleaning mechanism, the demister scale cleaning mechanism comprises the following components: the flushing water pipeline is made of glass fiber reinforced plastics, the nozzle is made of plastics, and the nozzle is connected with the flushing water pipeline through threads.

The utility model has the beneficial effects that: install pipeline rotary joint and driving piece additional at defroster sparge water system, drive the reciprocal swing of wash water pipeline at certain angle range through the driving piece, clean the defroster, reduce and wash the dead angle, avoid defroster scale deposit.

In view of the fact that the slurry in the liquid storage tank is easy to overflow when the washing water amount is too large in the working process of the demister scale removing mechanism, a flue gas desulfurization tower is provided.

In order to solve the technical problems, the utility model also provides the following technical scheme: a flue gas desulfurization tower, characterized in that: comprises the demister scale cleaning mechanism; the tower body comprises an air inlet pipe, an air outlet cap and a liquid storage tank, wherein the liquid storage tank is arranged at the bottom end position of a cavity in the tower body, the air inlet pipe is arranged above the liquid storage tank, and the air outlet cap is arranged at the top end of the tower body; the demisting device comprises a demister and a demister fixing piece, wherein the demister is provided with two stages, the demister fixing piece is fixed below the air outlet cap cover in the tower body, and the scale cleaning assembly is arranged on the lower side surface of the demister for a certain distance; the spraying device comprises a circulating pump and a spraying pipeline, wherein the circulating pump is arranged outside the tower body and is connected with the spraying pipeline through a pipeline, and the spraying pipeline extends inside the tower body and is positioned above the air inlet pipe; the oxidation device comprises an oxidation air pipe and a support beam, wherein the support beam is arranged at the position, close to the bottom, of the liquid storage tank in the tower body, and the oxidation air pipe is arranged on the support beam in a supporting mode.

As a preferable scheme of the flue gas desulfurization tower, the spraying pipelines are provided with multiple layers and are arranged in a staggered mode.

As a preferable scheme of the flue gas desulfurization tower, a plurality of stirrers are arranged on the lower side surface of the wall of the liquid storage box tower.

As a preferable scheme of the flue gas desulfurization tower, a liquid level indicator and a detection window are arranged above the liquid storage tank.

The utility model has the beneficial effects that: fully stirring the slurry in the liquid storage tank through a stirrer to ensure that calcium sulfite in the flue gas fully contacts with the liquid level, so that the oxidation of the calcium sulfite is facilitated; the liquid level indicator and the inspection window can monitor the slurry amount in the liquid storage tank in real time, so that the overflow of the slurry is effectively avoided, and the working continuity of the flue gas desulfurization tower is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

FIG. 1 is a schematic view of the overall structure of the defogger scale removal mechanism of the present utility model.

FIG. 2 is a schematic view of a detailed partial structure of a scale removing mechanism of a demister according to the present utility model.

FIG. 3 is a schematic view of a pipeline rotary joint of a defogger scale cleaning mechanism of the utility model.

FIG. 4 is a schematic view of a spray nozzle of a de-scaling mechanism of the mist eliminator.

FIG. 5 is a schematic diagram of the overall structure of the flue gas desulfurization tower of the present utility model.

FIG. 6 is a schematic diagram of a cross-sectional structure of a flue gas desulfurization tower according to the present utility model.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.

Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Further, in describing the embodiments of the present utility model in detail, the cross-sectional view of the device structure is not partially enlarged to a general scale for convenience of description, and the schematic is only an example, which should not limit the scope of protection of the present utility model. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.

Example 1

Referring to fig. 1-4, a first embodiment of the present utility model provides a mist eliminator scale cleaning mechanism. The pipeline rotary joint is arranged on the flushing pipeline, the flushing branch pipe is driven to rotate in a certain angle through the driving piece, and the demister 401 is subjected to multi-angle spray washing.

Specifically, the scale cleaning assembly 100 comprises a main flushing pipe 101, a flushing branch pipe 102 and nozzles 103, wherein the flushing branch pipes 102 are uniformly distributed on two sides of the main flushing pipe 101 and are communicated with the inside of the main flushing pipe, and the nozzles 103 are arranged on the side wall below the flushing branch pipe 102; the angle adjusting assembly 200 comprises a pipeline rotary joint 201, a driving piece 202 and a fixing piece 203, wherein the flushing main pipe 101 is connected with the flushing branch pipe 102 through the pipeline rotary joint 201, and the driving piece 202 is arranged on the side wall of the flushing main pipe 101 through the fixing piece 203.

Further, the pipe swivel 201 includes a joint housing 201a, a bearing 201b, a spring 201c and a sealing ring 201d, the bearing 201b, the spring 201c and the sealing ring 201d are sleeved at the output end of the main flushing pipe 101, and the end of the joint housing 201a far away from the main flushing pipe 101 is fixed with the branch flushing pipe 102.

Preferably, the driving piece 202 extends out of the limit rods 202a towards the flushing branch pipe 102 at two sides, a limit block 201e is arranged on the joint shell 201a, and the limit rods 202a are matched with the limit block 201e in structure; the driving piece 202 swings radially along the main flushing pipe 101, and drives the limiting block 201e to rotate through the limiting rod 202a, so that the flushing branch pipe 102 fixed with the joint housing 201a is driven to rotate by 30 degrees relative to the vertical direction.

In summary, the scale cleaning assembly 100 periodically starts to clean scale, flushing water flows in from the input end of the main flushing pipe 101 and is sprayed out through the nozzles 103, and meanwhile, the driving piece 202 swings radially along the main flushing pipe 101 to drive the flushing branch pipe 102 to rotate, so that the nozzles 103 can spray the demister 401 at multiple angles.

Example 2

Referring to fig. 1 to 4, a second embodiment of the present utility model is different from the first embodiment in that: the nozzle 103 comprises two injection holes 103a, the injection holes 103a form a certain included angle, the flushing angle is increased, and the flushing dead angle is further reduced.

Specifically, the included angle between the two injection holes 103a can be adjusted and changed according to the distance between the demister 401 and the scale cleaning assembly 100, the flushing branch pipe 102 is made of glass fiber reinforced plastic, the nozzle 103 is made of plastic, and the nozzle 103 is connected with the flushing branch pipe 102 through threads.

Further, the outer sides of the pipeline rotary joint 201 and the driving piece 202 are coated with anti-corrosion paint, so that the pipeline rotary joint 201 and the driving piece 202 are protected from corrosion, and the connection and the sealing of the pipeline rotary joint 201 are ensured.

In summary, the nozzle 103 includes two injection holes 103a, different injection holes 103a with different angles can be disposed on different nozzles 103, and the nozzle 103 is screwed with the flushing branch pipe 102 according to the adjustment and replacement of the nozzle 103 according to the distance between the demister 401 and the scale cleaning assembly 100.

Example 3

Referring to fig. 5 and 6, a third embodiment of the present utility model is different from the second embodiment in that: the flue gas desulfurization tower comprises a tower body 300, a demisting device 400, a spraying device 500 and an oxidation device 600, wherein desulfurization efficiency is improved through a multi-layer spraying pipeline 501 and a multi-stage demister 401, and the scale cleaning assemblies 100 are additionally arranged on the upper side and the lower side of the demister 401 in different modes according to different demisting amounts of the demister 401.

Specifically, the tower body 300 comprises an air inlet pipe 301, an air outlet cap 302 and a liquid storage box 303, wherein the liquid storage box 303 is arranged at the bottom end position of a cavity in the tower body 300, the air inlet pipe 301 is arranged above the liquid storage box 303, and the air outlet cap 302 is arranged at the top end of the tower body 300; the demister 400 comprises a demister 401 and a demister fixing piece 402, wherein the demister 401 is provided with two stages, the demister fixing piece 402 is fixed below the air outlet cap cover 302 in the tower body 300, and the scale cleaning assembly 100 is arranged on the lower side surface of the demister 401 for a certain distance; the spraying device 500 comprises a spraying pipeline 501 and a circulating pump 502, wherein the circulating pump 502 is arranged outside the tower body 300 and is connected with the spraying pipeline 501 through a pipeline, and the spraying pipeline 501 extends inside the tower body 300 and is positioned above the air inlet pipe 301; the oxidation device 600 comprises an oxidation air pipe 601 and a support beam 602, wherein the support beam 602 is arranged at a position, close to the bottom, of the liquid storage box 303 in the tower body 300, and the oxidation air pipe 601 is erected on the support beam 602.

Wherein, spray line 501 is provided with multilayer and staggered arrangement, sprays the cover face bigger, increase thick liquid and flue gas area of contact, intensive mixing desulfurization.

Further, the demister scale cleaning assembly 100 is divided into three paths, wherein two paths are arranged on the upper side and the lower side of the primary demister 401a, and one path is arranged on the lower side of the secondary demister 401b, so that the washing coverage of the demister 401 is increased.

Preferably, a plurality of agitators 303a are provided on the lower side of the tower wall of the tank 303, and a liquid level indicator 303b and a detection window 303c are provided above the agitators. The stirrer 303a stirs the slurry in the liquid storage box 303, so that the oxidation air and the slurry are fully mixed, and the desulfurization working condition in the flue gas desulfurization tower is observed through the liquid level indicator 303b and the detection window 303c, thereby preventing overflow accidents.

In summary, when the flue gas desulfurization tower operates, flue gas enters the tower body 300 through the air inlet pipe 301 and gradually rises, slurry sprayed by the multi-layer spraying pipeline 501 is mixed for desulfurization in the rising process, purified flue gas is discharged after vapor is removed by the demister 401, the demister is periodically opened for cleaning, and the demister 401 is cleaned by washing at multiple angles up and down through the scale cleaning assembly 100.

It should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present utility model may be modified or substituted without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered in the scope of the claims of the present utility model.

Claims

1. The utility model provides a defroster clear dirty mechanism which characterized in that: comprising the steps of (a) a step of,

the scale cleaning assembly (100) comprises a main flushing pipe (101), a flushing branch pipe (102) and nozzles (103), wherein the flushing branch pipes (102) are uniformly distributed on two sides of the main flushing pipe (101) and are communicated with the inside of the main flushing pipe, and the nozzles (103) are arranged on the side wall below the flushing branch pipe (102);

the angle adjusting assembly (200) comprises a pipeline rotary joint (201), a driving piece (202) and a fixing piece (203), wherein the flushing main pipe (101) is connected with the flushing branch pipe (102) through the pipeline rotary joint (201), and the driving piece (202) is arranged on the side wall above the flushing main pipe (101) through the fixing piece (203).

2. The mist eliminator scale cleaning mechanism of claim 1, wherein: the pipeline rotary joint (201) comprises a joint shell (201 a), a bearing (201 b), a spring (201 c) and a sealing ring (201 d), wherein the bearing (201 b), the spring (201 c) and the sealing ring (201 d) are sleeved at the output end of the flushing main pipe (101), and one end, far away from the flushing main pipe (101), of the joint shell (201 a) is fixed with the flushing branch pipe (102).

3. The mist eliminator scale cleaning mechanism of claim 2, wherein: the driving piece (202) stretches out towards the two sides towards the flushing branch pipe (102) and is provided with a limiting rod (202 a), the joint shell (201 a) is provided with a limiting block (201 e), and the limiting rod (202 a) is matched with the limiting block (201 e) in structure.

4. A mist eliminator scale cleaning mechanism according to any one of claims 1 to 3, characterized in that: the nozzle (103) comprises two injection holes (103 a), and the injection holes (103 a) form a certain included angle.

5. The mist eliminator scale cleaning mechanism of claim 4, wherein: the outer sides of the pipeline rotary joint (201) and the driving piece (202) are coated with anti-corrosion paint.

6. The mist eliminator scale cleaning mechanism of claim 5, wherein: the flushing branch pipe (102) is made of glass fiber reinforced plastic, the nozzle (103) is made of plastic, and the nozzle (103) is connected with the flushing branch pipe (102) through threads.

7. A flue gas desulfurization tower, characterized in that: a defogger scale removal mechanism comprising any one of claims 1-6; also included is a method of manufacturing a semiconductor device,

the tower body (300) comprises an air inlet pipe (301), an air outlet cap (302) and a liquid storage box (303), wherein the liquid storage box (303) is arranged at the bottom end position of an inner cavity of the tower body (300), the air inlet pipe (301) is arranged above the liquid storage box (303), and the air outlet cap (302) is arranged at the top end of the tower body (300);

the demisting device (400) comprises a demister (401) and a demister fixing piece (402), wherein the demister (401) is provided with two stages, the demister fixing piece (402) is fixed below the air outlet cap (302) in the tower body (300), and the scale cleaning assembly (100) is arranged on the lower side face of the demister (401) for a certain distance;

the spraying device (500) comprises a spraying pipeline (501) and a circulating pump (502), wherein the circulating pump (502) is arranged outside the tower body (300) and is connected with the spraying pipeline (501) through a pipeline, and the spraying pipeline (501) extends inside the tower body (300) and is positioned above the air inlet pipe (301);

the oxidation device (600) comprises an oxidation air pipe (601) and a support beam (602), wherein the support beam (602) is arranged at the position, close to the bottom, of the liquid storage tank (303) in the tower body (300), and the oxidation air pipe (601) is erected on the support beam (602).

8. The flue gas desulfurization tower according to claim 7, wherein: the spray pipelines (501) are provided with multiple layers and are arranged in a staggered manner.

9. The flue gas desulfurization tower according to claim 8, wherein: a plurality of stirrers (303 a) are arranged on the lower side surface of the tower wall of the liquid storage box (303).

10. The flue gas desulfurization tower according to any one of claims 7 to 9, characterized in that: a liquid level indicator (303 b) and a detection window (303 c) are arranged above the liquid storage box (303).