CN217614453U

CN217614453U - Power plant's desulfurization flue gas system

Info

Publication number: CN217614453U
Application number: CN202221181653.0U
Authority: CN
Inventors: 蔡国忠; 陈明光
Original assignee: Huaneng Shantou Haimen Power Generation Co Ltd
Current assignee: Huaneng Shantou Haimen Power Generation Co Ltd
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2022-10-21
Anticipated expiration: 2032-05-17

Abstract

The utility model provides a desulfurization flue gas system of power plant, include: the desulfurizing tower, the outside of desulfurizing tower is provided with circulating pump and replenishing pump, and the outer end of replenishing pump is connected with the pulping box, the upper end of pulping box is provided with a batching section of thick bamboo, and the outside of a batching section of thick bamboo is provided with the measuring pump, the inside of a batching section of thick bamboo is provided with the mount, and the fixed conduit in middle part of mount to the lower extreme of mount is provided with down the mount, the middle part of mount is fixed with the protecting crust down, and the inside motor that is provided with of protecting crust to cut the inside outside of motor and install torque sensor, the liquid outlet of measuring pump is connected with the water pipe, and inside the water pipe inserted a batching section of thick bamboo to medial extremity at the water pipe is connected with atomizer. The utility model provides a current desulfurizer thick liquid preparation facilities have the configuration process complicated to and the raw materials dust problem of pollution and transport putty that wafts.

Description

Power plant's desulfurization flue gas system

Technical Field

The utility model relates to a desulfurization system technical field, concretely relates to desulfurization flue gas system of power plant.

Background

Limestone-gypsum slurry is mixed in the desulfurizing tower, flows down in a spraying mode through a nozzle in the tower under the action of a circulating pump, contacts with flue gas in a convection mode, absorbs SO2 in the flue gas and generates a chemical reaction with the SO2 to generate gypsum. At the same time, the circulating slurry also absorbs the escaped ammonia from the denitration reactor and converts it into NH4+. The circulating slurry can absorb volatile Na-containing substances, heavy metals, HCl and other substances in the flue gas, dissolve the substances and enrich the substances under the evaporation effect generated by the flue gas. When the content of the reaction product gypsum and various impurities in the desulfurization tower reaches a certain limit value, the circulating slurry is discharged out of the desulfurization tower so as to maintain the normal operation of the chemical reaction in the tower.

However, the existing desulfurizer slurry preparation device has some defects, limestone powder can raise more dust in the putting process, the dust floats and scatters to cause pollution and human body harm, the limestone powder is easy to block in the conveying process, secondly, the limestone powder and water are mixed and need to be fully stirred, the preparation proportion of the limestone powder and water needs to be accurately controlled, the concentration of the prepared slurry is too large to cause conveying pressure for a supply pump, the over-small concentration causes incomplete desulfurization reaction, the limestone powder and water are required to be prepared in the prior art, and the process is complex.

Disclosure of Invention

In order to overcome the defects in the prior art, a power plant desulfurization flue gas system is provided so as to solve the problems of complex configuration process, floating pollution of raw material dust and material conveying blockage of the existing desulfurizer slurry preparation device.

In order to realize the above-mentioned purpose, provide a desulfurization flue gas system of power plant, include:

the desulfurizing tower, the outside of desulfurizing tower is provided with circulating pump and replenishing pump, and the outer end of replenishing pump is connected with the pulping box, the upper end of pulping box is provided with a batching section of thick bamboo, and the outside of a batching section of thick bamboo is provided with the measuring pump, the inside of a batching section of thick bamboo is provided with the mount, and the fixed conduit in middle part of mount to the lower extreme of mount is provided with down the mount, the middle part of mount is fixed with the protecting crust down, and the inside motor that is provided with of protecting crust to cut the inside outside of motor and install torque sensor, the liquid outlet of measuring pump is connected with the water pipe, and inside the water pipe inserted a batching section of thick bamboo to medial extremity at the water pipe is connected with atomizer.

Furthermore, the inlet end of desulfurizing tower is connected with the dust remover, and the upper end of desulfurizing tower end of giving vent to anger is connected with the chimney to the inside of desulfurizing tower is provided with defroster and shower.

Furthermore, an oxidation pond is arranged inside the desulfurizing tower, the outer end of the oxidation pond is connected with an air conveying device, and the oxidation pond is connected with a circulating pump and a spraying pipe at the upper end to form a circulating spraying system.

Furthermore, the supply pump passes through the pipe connection with the inside oxidation pond of desulfurizing tower, and the feed liquor end of supply pump is connected with the discharge gate in the slurrying case lower extreme outside.

Furthermore, the upper fixing frame and the lower fixing frame are both arranged in a cross rod structure, the outer end of the fixing frame is fixedly connected with the inner wall of the batching barrel, the inner end of the upper fixing frame is fixedly connected with the outer wall of the conduit, and the inner end of the lower fixing frame is fixedly connected with the outer wall of the protective shell.

Furthermore, the vertical connection of conduit is in the upper end of protecting crust, and conduit is inside to be provided with power cord and signal line to the power cord is connected with the motor, and the signal line is connected with torque sensor, and motor and torque sensor electric connection.

Furthermore, the lower end of the batching cylinder is provided with a feeding cylinder, and the lower end of the feeding cylinder is inserted into the upper end of the pulping box and is fixedly connected with the wall of the pulping box.

Furthermore, the lower extreme of motor is connected with the pivot, and the lower extreme of pivot and the axle bed rotation of slurrying bottom of the case portion are connected, and are provided with propeller blade in the inboard of feed cylinder down and in the outside of pivot, and the inboard of slurrying case and in the fixed stirring rake in the outside of pivot.

The utility model has the advantages that the utility model discloses a power plant desulfurization flue gas system utilizes measuring pump, water pipe and atomizer for in throwing limestone powder into a batching section of thick bamboo in-process, eliminate the dust of kicking up and spray, the effectual dust that reduces is wafted and is polluted; the limestone powder raw material in the lower charging barrel at the lower end of the proportioning barrel is spirally conveyed by using the motor and the rotating shaft propeller blade, so that the phenomenon of material blockage is prevented, the raw material conveying efficiency is improved, and meanwhile, the mixed slurry is fully stirred by using the stirring paddle in the pulping box; utilize torque sensor just to have the pivot moment of torsion that detects the motor, and then learn the concentration of the inside thick liquid of slurrying case, then carry out the variable through control measuring pump and carry out the variable transport, adjust the water yield that gets into the slurrying case, realize reasonable configuration, the process is simple relatively.

Drawings

Fig. 1 is a schematic structural diagram of a desulfurization system according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of an off-line slurry preparation structure according to an embodiment of the present invention.

Fig. 3 is a schematic top view of the upper fixing frame according to the embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a position a in fig. 1 according to an embodiment of the present invention.

1. A desulfurizing tower; 2. a dust remover; 3. a circulation pump; 4. a make-up pump; 5. a pulping box; 6. a dosing cylinder; 7. an upper fixing frame; 8. a rotating shaft; 9. a propeller blade; 10. a discharge port; 11. a stirring paddle; 12. a shaft seat; 13. a metering pump; 14. feeding the material barrel; 15. a water pipe; 16. an atomizing spray head; 17. a conduit; 18. a power line; 19. a signal line; 20. a lower fixing frame; 21. a protective shell; 22. a motor; 23. a torque sensor.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

Fig. 1 is the structural schematic diagram of a desulfurization system of the embodiment of the present invention, fig. 2 is the offline slurry preparation structural schematic diagram of the embodiment of the present invention, fig. 3 is the top mount overlooking structural schematic diagram of the embodiment of the present invention, and fig. 4 is the structural schematic diagram of a position a in fig. 1 of the embodiment of the present invention.

Referring to fig. 1 to 4, the utility model provides a desulfurization flue gas system of power plant, include: desulfurizing tower 1, slurrying case 5, batching section of thick bamboo 6 and measuring pump 13.

Specifically, desulfurizing tower 1's the outside is provided with circulating pump 3 and replenishing pump 4, and replenishing pump 4's outer end is connected with slurrying case 5, slurrying case 5's upper end is provided with a batching section of thick bamboo 6, and the outside of a batching section of thick bamboo 6 is provided with measuring pump 13, the inside of a batching section of thick bamboo 6 is provided with mount 7, and the fixed wire conduit 17 in middle part of mount 7, and the lower extreme of mount 7 is provided with down mount 20, the middle part of mount 20 is fixed with protecting crust 21 down, and the inside motor 22 that is provided with of protecting crust 21, and cut the inside outside of motor 22 and install torque sensor 23, the liquid outlet of measuring pump 13 is connected with water pipe 15, and inside water pipe 15 inserted a batching section of thick bamboo 6, and be connected with atomizer 16 at the medial extremity of water pipe 15.

In this embodiment, the pulping box 5 and the dosing cylinder 6 are arranged as an integral device structure, and the liquid inlet of the metering pump 13 is connected with a water supply source.

The torque sensor 23 and the motor 22 are connected with the same electric cabinet, and the torque of the motor 22 is provided with a rated threshold value.

The upper end pipeline of the metering pump 13 is provided with a booster pump, so that the atomizing nozzle 16 can conveniently strengthen the water pressure to achieve the atomizing effect.

The spraying surface of the atomizer 16 is provided with an arc spherical surface structure, so that the spraying range is enlarged, and the atomizer 16 is provided with an upper atomizer and a lower atomizer which are respectively positioned at the upper end and the lower end of the upper fixing frame 7.

The air inlet end of the desulfurizing tower 1 is connected with a dust remover 2, the air outlet end of the upper end of the desulfurizing tower 1 is connected with a chimney, and a demister and a spray pipe are arranged inside the desulfurizing tower 1; an oxidation pond is arranged inside the desulfurizing tower 1, the outer end of the oxidation pond is connected with an air conveying device, and the oxidation pond is connected with a circulating pump 3 and a spray pipe at the upper end to form a circulating spray system.

In a preferred embodiment, raw flue gas is dedusted by the deduster 2 and desulfurized by the desulfurizing tower 1, and then is purified and discharged into the chimney through the wind power of the system.

The supply pump 4 is connected with the oxidation pond in the desulfurizing tower 1 through a pipeline, and the liquid inlet end of the supply pump 4 is connected with the discharge hole 10 on the outer side of the lower end of the pulping box 5.

In a preferred embodiment, the replenishment pump 4 replenishes the solution in the oxidation tank when the solution is consumed too much.

The upper fixing frame 7 and the lower fixing frame 20 are both of a cross rod structure, the outer end of the fixing frame is fixedly connected with the inner wall of the proportioning barrel 6, the inner end of the upper fixing frame 7 is fixedly connected with the outer wall of the conduit 17, and the inner end of the lower fixing frame 20 is fixedly connected with the outer wall of the protective shell 21.

In a preferred embodiment, the upper fixture 7 facilitates stable fixation of the conduit 17 and the lower fixture 20 facilitates stable fixation of the motor 22.

The cross rod structure of the upper fixing frame 7 is convenient for dispersing limestone powder when falling down, and the auxiliary effect of preventing material blockage is achieved.

Conduit 17 is vertical to be connected in the upper end of protective housing 21, and conduit 17 is inside to be provided with power cord 18 and signal line 19 to power cord 18 is connected with motor 22, and signal line 19 is connected with torque sensor 23, and motor 22 and torque sensor 23 electric connection.

In this embodiment, the power line 18 is externally connected to a power supply, the signal line 19 is connected to an external controller inside the electric cabinet, and the controller is electrically connected to the metering pump 13, so as to control the amount of water entering the metering pump 13.

The lower end of the batching cylinder 6 is provided with a lower charging cylinder 14, and the lower end of the lower charging cylinder 14 is inserted into the upper end of the pulping box 5 and is fixedly connected with the wall of the pulping box 5.

The lower end of the motor 22 is connected with a rotating shaft 8, the lower end of the rotating shaft 8 is rotatably connected with a shaft seat 12 at the bottom of the pulping box 5, a propeller blade 9 is arranged on the inner side of the lower charging barrel 14 and on the outer side of the rotating shaft 8, and a stirring paddle 11 is fixed on the inner side of the pulping box 5 and on the outer side of the rotating shaft 8.

In a preferred embodiment, the conveying efficiency is enhanced by the propeller blades 9, and the stirring paddle 11 makes the raw materials and water mixed well.

The utility model discloses a power plant's desulfurization flue gas system can effectively solve current desulfurizer thick liquid preparation facilities and have the configuration process complicated to and the problem of raw materials dust drift pollution and transport putty, utilize measuring pump, water pipe and atomizer, make in throwing limestone flour into a batching section of thick bamboo process, carry out the spraying to the dust of kicking up and eliminate, the effectual dust drift pollution that has reduced; the limestone powder raw material in the lower charging barrel at the lower end of the proportioning barrel is spirally conveyed by utilizing the motor and the rotating shaft propeller blade, so that the phenomenon of material blockage is prevented, the raw material conveying efficiency is accelerated, and meanwhile, the mixed slurry is fully stirred by utilizing the stirring paddle in the pulping box; utilize torque sensor just to have the pivot moment of torsion that detects the motor, and then learn the concentration of the inside thick liquid of slurrying case, then carry out the variable through control measuring pump and carry out the variable transport, adjust the water yield that gets into the slurrying case, realize reasonable configuration, the process is simple relatively.

Claims

1. A power plant desulfurization flue gas system, characterized by comprising: desulfurizing tower (1), the outside of desulfurizing tower (1) is provided with circulating pump (3) and replenishing pump (4), and the outer end of replenishing pump (4) is connected with slurrying case (5), the upper end of slurrying case (5) is provided with batching section of thick bamboo (6), and the outside of batching section of thick bamboo (6) is provided with measuring pump (13), the inside of batching section of thick bamboo (6) is provided with mounting bracket (7), and the fixed wire conduit (17) in middle part of mounting bracket (7) to the lower extreme of mounting bracket (7) is provided with down mount (20), the middle part of down mount (20) is fixed with protecting crust (21), and inside protecting crust (21) is provided with motor (22) to cut the inside outside of motor (22) and install torque transducer (23), the liquid outlet of measuring pump (13) is connected with water pipe (15), and inside water pipe (15) insert batching section of thick bamboo (6), and be connected with atomizer (16) at the medial extremity of water pipe (15).

2. The power plant desulfurization flue gas system according to claim 1, wherein the inlet end of the desulfurization tower (1) is connected with a dust remover (2), the outlet end of the upper end of the desulfurization tower (1) is connected with a chimney, and a demister and a spray pipe are arranged inside the desulfurization tower (1); an oxidation pond is arranged in the desulfurizing tower (1), the outer end of the oxidation pond is connected with air conveying equipment, and the oxidation pond is connected with a circulating pump (3) and a spray pipe at the upper end to form a circulating spray system; the feed pump (4) is connected with an oxidation pond in the desulfurizing tower (1) through a pipeline, and the liquid inlet end of the feed pump (4) is connected with a discharge hole (10) on the outer side of the lower end of the pulping box (5); the upper fixing frame (7) and the lower fixing frame (20) are both of a cross rod structure, the outer end of the fixing frame is fixedly connected with the inner wall of the proportioning barrel (6), the inner end of the upper fixing frame (7) is fixedly connected with the outer wall of the conduit (17), and the inner end of the lower fixing frame (20) is fixedly connected with the outer wall of the protective shell (21).

3. The power plant desulfurization flue gas system according to claim 1, wherein the conduit (17) is vertically connected to the upper end of the protective shell (21), a power line (18) and a signal line (19) are arranged inside the conduit (17), the power line (18) is connected with the motor (22), the signal line (19) is connected with the torque sensor (23), and the motor (22) is electrically connected with the torque sensor (23); the lower end of the batching cylinder (6) is provided with a lower charging cylinder (14), and the lower end of the lower charging cylinder (14) is inserted into the upper end of the pulping box (5) and is fixedly connected with the wall of the pulping box (5); the lower extreme of motor (22) is connected with pivot (8), and the lower extreme of pivot (8) rotates with axle bed (12) of slurrying case (5) bottom and is connected, and is provided with propeller blade (9) in the inboard of feed cylinder (14) down and in the outside of pivot (8), and in the inboard of slurrying case (5) and in the fixed stirring rake (11) in the outside of pivot (8).