CN211246095U

CN211246095U - Spraying device for boiler flue gas desulfurization

Info

Publication number: CN211246095U
Application number: CN201922193975.1U
Authority: CN
Inventors: 单大雷; 李新辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-08-14
Anticipated expiration: 2029-12-09

Abstract

The utility model discloses a spray set for boiler flue gas desulfurization, including limestone slurry conveying mechanism and spray mechanism, spray mechanism and limestone slurry conveying mechanism fixed connection, through set up the circulating pump at limestone slurry conveying mechanism, make the limestone slurry can carry the top of flue, make the limestone slurry fall from the top down, fully contact with the flue gas, the desulfurization effect reaches the best; the spraying mechanism is provided with the flue gas blocking device, so that the flow path of the flue gas in the flue is lengthened, the residence time in the flue is longer, the contact between the flue gas and limestone slurry is more sufficient, and the sulfur removal effect is improved; through setting up flue gas concentration monitoring devices to with the control panel and the solenoid valve electric connection that flue gas concentration monitoring devices set up, the accessible flue gas contains the conveying capacity of sulfur concentration control limestone slurry, reaches the purpose of practicing thrift the cost.

Description

Spraying device for boiler flue gas desulfurization

Technical Field

The utility model relates to a sweetener technical field specifically is a spray set for boiler flue gas desulfurization.

Background

Desulfurization, broadly referred to as desulfurization prior to combustion, refers to the removal of sulfur from fuel and prior to the emission of flue gases. Is one of the important technical measures for preventing and controlling the air pollution. With the development of industry and the improvement of living standard of people, the desire for energy is continuously increased, and SO2 in the coal-fired flue gas becomes a main cause of air pollution. The reduction of SO2 pollution is a urgent issue in the current atmospheric environmental management. The desulfurization method generally comprises three methods, namely desulfurization before combustion, desulfurization during combustion and desulfurization after combustion. Many flue gas desulfurization processes have been widely used in industry, and have important practical significance for the treatment of tail gas of various boilers and incinerators. The types of flue gas desulfurization techniques are dozens, and the flue gas desulfurization is divided into the following steps according to the dry and wet state of water and desulfurization products in the desulfurization process: wet, semi-dry and dry desulfurizing process. The wet desulphurization technology is mature, the efficiency is high, and the operation is simple.

At present, limestone slurry is sprayed in a flue and mixed with flue gas by a wet desulphurization technology, so that the aim of desulphurization is achieved, and the desulphurization effect is poor.

In view of the above problem, the utility model provides a spray set for boiler flue gas desulfurization to the problem among the prior art has been solved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a spray set for boiler flue gas desulfurization sprays evenly, and it is effectual to remove sulphur to the problem among the prior art has been solved.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a spray set for boiler flue gas desulfurization, including limestone slurry conveying mechanism and spray mechanism, spray mechanism and limestone slurry conveying mechanism fixed connection, limestone slurry conveying mechanism includes limestone stirring device, choke valve, circulating pump, pipeline and solenoid valve, limestone stirring device passes through pipeline and is connected with the circulating pump, install the choke valve additional between limestone stirring device and circulating pump, limestone stirring device includes the limestone stirring case, agitator motor and discharge gate, agitator motor sets up the top at the limestone stirring case, the discharge gate sets up the bottom at the limestone stirring case, the discharge gate is fixed with pipeline sealing, pipeline fixed mounting is in flue one side, and be provided with the pipe connection head, solenoid valve fixed mounting is on pipeline;

the mechanism that sprays includes that the limestone thick liquid holds the liquid case, flue gas check keep off device and flue gas concentration monitoring devices, the limestone thick liquid holds liquid case fixed mounting inside the flue, flue gas check keep off the lower extreme that the device fixed welding held the liquid case at the limestone thick liquid, flue gas concentration monitoring devices fixed mounting is on the inner wall of flue, the below fixed mounting that the limestone thick liquid held the liquid case has the atomizer, flue gas check keep off the device and include flue gas check baffle and the fixed frame of check baffle, flue gas check baffle fixed mounting is on the fixed frame of check baffle, the fixed welding of the fixed frame of check baffle holds on the liquid case at the limestone thick liquid, flue gas concentration monitoring devices includes sulphur concentration monitor and control panel, sulphur concentration monitor fixed mounting is on the control panel, and with control.

Preferably, the conveying pipeline is made of high alloy composite steel materials, and a rubber lining is arranged inside the conveying pipeline.

Preferably, the atomizer comprises an atomizer, a nozzle connecting block and a high-pressure nozzle, the high-pressure nozzle is fixedly connected with the atomizer through the nozzle connecting block, and the atomizer, the nozzle connecting block and the high-pressure nozzle form the whole atomizer.

Preferably, the flue gas check baffle includes check baffle main part, convex surface and concave surface, and convex surface and concave surface connect each other and constitute check baffle main part to set up the active carbon board in the inside of check baffle main part.

Preferably, the control panel that flue gas concentration monitoring devices set up is connected with solenoid valve electric connection.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. this a spray set for boiler flue gas desulfurization sets up the circulating pump through at limestone slurry conveying mechanism for the top of flue can be carried to the limestone slurry, makes the limestone slurry from the top fall down, fully contacts with the flue gas, and the sulphur removal effect reaches the best.

2. This a spray set for boiler flue gas desulfurization, spray the mechanism and set up flue gas check and keep off the device for the circulating path of flue gas in the flue lengthens, and the dwell time in the flue is longer, makes the contact of flue gas and lime stone thick liquid more abundant, makes the sulphur removal effect improve.

3. This a spray set for boiler flue gas desulfurization is through setting up flue gas concentration monitoring devices to with the control panel and the solenoid valve electric connection of flue gas concentration monitoring devices setting, the accessible flue gas contains the conveying capacity of sulfur concentration control limestone slurry, reaches the purpose of practicing thrift the cost.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural view of a limestone slurry conveying mechanism of the present invention;

FIG. 3 is a schematic structural view of the spraying mechanism of the present invention;

FIG. 4 is a schematic structural view of the atomizer of the present invention;

FIG. 5 is a schematic view of the structure of the smoke baffle of the present invention;

fig. 6 is the schematic view of the connection structure between the flue gas concentration monitoring device and the electromagnetic valve of the present invention.

In the figure: 1. a limestone slurry conveying mechanism; 11. a limestone stirring device; 111. a limestone stirring tank; 112. a stirring motor; 113. a discharge port; 12. a throttle valve; 13. a circulation pump; 14. a delivery conduit; 141. a pipe joint; 15. an electromagnetic valve; 2. a spraying mechanism; 21. a limestone slurry liquid storage tank; 211. an atomizing spray head; 2111. an atomizer; 2112. a nozzle connecting block; 2113. a high pressure nozzle; 22. a smoke blocking device; 221. a smoke grid baffle; 2211. a grid baffle main body; 22111. an activated carbon plate; 2212. a convex surface; 2213. a concave surface; 222. a grid baffle fixing frame; 23. a flue gas concentration monitoring device; 231. a sulfur concentration monitor; 232. and a control panel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, a spraying device for boiler flue gas desulfurization includes a limestone slurry conveying mechanism 1 and a spraying mechanism 2, wherein the spraying mechanism 2 is fixedly connected with the limestone slurry conveying mechanism 1.

Referring to fig. 2, a spraying device for boiler flue gas desulfurization, a limestone slurry conveying mechanism 1 includes a limestone stirring device 11, a throttle valve 12, a circulating pump 13, a conveying pipeline 14 and an electromagnetic valve 15, the limestone stirring device 11 is connected with the circulating pump 13 through the conveying pipeline 14, the throttle valve 12 is additionally installed between the limestone stirring device 11 and the circulating pump 13, the limestone slurry can be conveyed to the top of a flue by arranging the circulating pump 13 on the limestone slurry conveying mechanism 1, so that the limestone slurry falls from top to bottom and is fully contacted with flue gas, the desulfurization effect is optimal, the limestone stirring device 11 includes a limestone stirring tank 111, a stirring motor 112 and a discharge port 113, the stirring motor 112 is arranged at the top of the limestone stirring tank 111, the discharge port 113 is arranged at the bottom of the limestone stirring tank 111, and the discharge port 113 is fixedly connected with the conveying pipeline 14 in a sealing manner, the conveying pipeline 14 is fixedly arranged on one side of the flue and is provided with a pipeline connector 141, the conveying pipeline 14 is made of high alloy composite steel materials and is internally provided with a rubber lining, and the electromagnetic valve 15 is fixedly arranged on the conveying pipeline 14.

Referring to fig. 3-6, a spraying device for boiler flue gas desulfurization, a spraying mechanism 2 comprises a limestone slurry storage tank 21, a flue gas blocking device 22 and a flue gas concentration monitoring device 23, the limestone slurry storage tank 21 is fixedly installed inside a flue, the flue gas blocking device 22 is fixedly welded at the lower end of the limestone slurry storage tank 21, the flue gas concentration monitoring device 23 is fixedly installed on the inner wall of the flue, an atomizer 211 is fixedly installed below the limestone slurry storage tank 21, the atomizer 211 comprises an atomizer 2111, a nozzle connecting block 2112 and a high-pressure nozzle 2113, the high-pressure nozzle 2113 is fixedly connected with the atomizer 2111 through the nozzle connecting block 2112, the atomizer 2111, the nozzle connecting block 2112 and the high-pressure nozzle 2113 form an integral atomizer 211, the flue gas blocking device 22 comprises a flue gas blocking plate 221 and a blocking plate fixing frame 222, the flue gas blocking plate 221 is fixedly installed on the blocking plate fixing frame 222, the flue gas grid baffle 221 comprises a grid baffle main body 2211, a convex surface 2212 and a concave surface 2213, the convex surface 2212 and the concave surface 2213 are connected with each other to form a grid baffle main body 2211, an activated carbon plate 22111 is arranged inside the grid baffle main body 2211, the spraying mechanism 2 is provided with a flue gas grid baffle device 22, so that the circulation path of flue gas in a flue is lengthened, the residence time in the flue is longer, the contact between the flue gas and limestone slurry is more sufficient, the sulfur removal effect is improved, a grid baffle fixing frame 222 is fixedly welded on a limestone slurry storage tank 21, a flue gas concentration monitoring device 23 comprises a sulfur concentration monitor 231 and a control plate 232, the sulfur concentration monitor 231 is fixedly arranged on the control plate 232 and is electrically connected with the control plate 232, the control plate 232 arranged on the flue gas concentration monitoring device 23 is electrically connected with the electromagnetic valve 15, by arranging the flue gas concentration monitoring device 23, and electrically connecting the control plate 232 arranged on the flue gas concentration monitoring device, the conveying capacity of limestone slurry can be controlled by the sulfur concentration of the flue gas, and the purpose of saving cost is achieved.

In summary, the following steps: the utility model provides a spray set for boiler flue gas desulfurization, including limestone slurry conveying mechanism 1 and spray mechanism 2, spray mechanism 2 and limestone slurry conveying mechanism 1 fixed connection, through set up circulating pump 13 at limestone slurry conveying mechanism 1, make the limestone slurry can convey the top of flue, make the limestone slurry fall from the top down, fully contact with the flue gas, the desulfurization effect reaches the best; the spraying mechanism 2 is provided with the flue gas blocking device 22, so that the flow path of the flue gas in the flue is lengthened, the residence time in the flue is longer, the contact between the flue gas and limestone slurry is more sufficient, and the sulfur removal effect is improved; through setting up flue gas concentration monitoring devices 23 to control panel 232 and the 15 electric connection of solenoid valve with the flue gas concentration monitoring devices 23 setting, the accessible flue gas contains the conveying capacity of sulfur concentration control limestone slurry, reaches the purpose of practicing thrift the cost.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a spray set for boiler flue gas desulfurization, includes limestone slurry conveying mechanism (1) and sprays mechanism (2), spray mechanism (2) and limestone slurry conveying mechanism (1) fixed connection, its characterized in that: the limestone slurry conveying mechanism (1) comprises a limestone stirring device (11), a throttle valve (12), a circulating pump (13), a conveying pipeline (14) and an electromagnetic valve (15), wherein the limestone stirring device (11) is connected with the circulating pump (13) through the conveying pipeline (14), a throttle valve (12) is additionally arranged between a limestone stirring device (11) and a circulating pump (13), the limestone stirring device (11) comprises a limestone stirring box (111), a stirring motor (112) and a discharge port (113), the stirring motor (112) is arranged at the top of the limestone stirring box (111), the discharge port (113) is arranged at the bottom of the limestone stirring box (111), the discharge port (113) is fixedly connected with a conveying pipeline (14) in a sealing way, the conveying pipeline (14) is fixedly arranged at one side of a flue, the pipeline connector (141) is arranged, and the electromagnetic valve (15) is fixedly arranged on the conveying pipeline (14);

the spraying mechanism (2) comprises a limestone slurry liquid storage box (21), a smoke grid blocking device (22) and a smoke concentration monitoring device (23), the limestone slurry liquid storage box (21) is fixedly installed inside a flue, the smoke grid blocking device (22) is fixedly welded at the lower end of the limestone slurry liquid storage box (21), the smoke concentration monitoring device (23) is fixedly installed on the inner wall of the flue, an atomizing nozzle (211) is fixedly installed below the limestone slurry liquid storage box (21), the smoke grid blocking device (22) comprises a smoke grid baffle plate (221) and a grid baffle plate fixing frame (222), the smoke grid baffle plate (221) is fixedly installed on the grid baffle plate fixing frame (222), the grid baffle plate fixing frame (222) is fixedly welded on the limestone slurry liquid storage box (21), the smoke concentration monitoring device (23) comprises a sulfur concentration monitor (231) and a control panel (232), the sulfur concentration monitor (231) is fixedly installed on the control panel (232), and is electrically connected with the control board (232).

2. The spraying device for desulfurizing the flue gas of the boiler according to claim 1, wherein: the conveying pipeline (14) is made of high-alloy composite steel materials, and a rubber lining is arranged inside the conveying pipeline.

3. The spraying device for desulfurizing the flue gas of the boiler according to claim 1, wherein: the atomizing spray head (211) comprises an atomizer (2111), a nozzle connecting block (2112) and a high-pressure nozzle (2113), the high-pressure nozzle (2113) is fixedly connected with the atomizer (2111) through the nozzle connecting block (2112), and the atomizer (2111), the nozzle connecting block (2112) and the high-pressure nozzle (2113) form the whole atomizing spray head (211).

4. The spraying device for desulfurizing the flue gas of the boiler according to claim 1, wherein: the smoke grid baffle (221) comprises a grid baffle main body (2211), a convex surface (2212) and a concave surface (2213), wherein the convex surface (2212) and the concave surface (2213) are connected with each other to form the grid baffle main body (2211), and an activated carbon plate (22111) is arranged in the grid baffle main body (2211).

5. The spraying device for desulfurizing the flue gas of the boiler according to claim 1, wherein: and a control panel (232) arranged on the flue gas concentration monitoring device (23) is electrically connected with the electromagnetic valve (15).