CN211514064U - Power plant boiler sulphide circulation absorbing device - Google Patents

Abstract

The utility model discloses a power boiler sulphide circulation absorbing device uses in sweetener technical field, and its technical scheme main points are: including the tobacco pipe of connecting the boiler and the lye tank of pouring into alkaline solution, the tobacco pipe downwardly extending to the lye tank in, the tobacco pipe bottom rotates and is connected with the desulfurization pipe that is linked together with the tobacco pipe, the below alkaline solution's liquid level is arranged in to desulfurization pipe lower part, desulfurization pipe upper portion is provided with annular tooth along the periphery wall is fixed, be provided with the motor on the tobacco pipe outer wall, be provided with the gear with annular tooth engaged with on the output shaft of motor, a plurality of jet mouths have been seted up along the periphery wall to the desulfurization pipe lower part. The utility model discloses the technical effect who has is: the content of sulfide in the flue gas can be effectively reduced by an acid-base neutralization method, so that the desulfurization effect is achieved.

Description

Power plant boiler sulphide circulation absorbing device

Technical Field

The utility model relates to a sweetener technical field, in particular to power plant's boiler sulphide circulation absorbing device.

Background

The boiler of power plant burns coal and generates electricity, because most coal is the inferior coal in the market now, contains a large amount of sulphur compositions in the coal, can add the sulphide in the flue gas that produces among the combustion process, directly discharges to the air in, can cause extremely serious pollution, therefore before the flue gas emission, need discharge after handling the sulphide in the flue gas again.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a power boiler sulphide cyclic absorption device, its advantage is: the content of sulfide in the flue gas can be effectively reduced by an acid-base neutralization method, so that the desulfurization effect is achieved.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a power boiler sulphide circulation absorbing device, includes the tobacco pipe of connecting the boiler and the lye tank of pouring into alkaline solution, the tobacco pipe downwardly extending to the lye tank in, the tobacco pipe bottom is rotated and is connected with the desulfurization pipe that is linked together with the tobacco pipe, below the liquid level of alkaline solution is arranged in to desulfurization pipe lower part, desulfurization pipe upper portion is provided with annular tooth along the fixed periphery wall, be provided with the motor on the tobacco pipe outer wall, be provided with the gear with annular tooth engaged with on the output shaft of motor, a plurality of injection mouths have been seted up along the periphery wall to desulfurization pipe lower part.

According to the technical scheme, flue gas generated by boiler combustion enters the flue pipe and finally enters the alkali liquor tank through the desulphurization pipe, sulfide in the flue gas and alkaline solution in the alkali liquor tank are subjected to acid-base neutralization reaction and then are neutralized and adsorbed, the purified flue gas is blown out of the liquid surface in a bubble form and is discharged into the air, and the content of sulfide in the flue gas can be effectively reduced by an acid-base neutralization method due to the fact that the sulfide in the flue gas is acidic, so that the desulphurization effect is achieved, and the flue gas can reach the discharge standard; in addition, during operation, personnel can also start the motor, and the meshing through gear and annular tooth drives the desulfurization pipe and rotates, and the desulfurization pipe rotates and then can make the flue gas of blowing into in the alkaline solution spout away from the jet rotation to increase the area of contact of flue gas and alkaline solution, improve desulfurization effect.

The utility model discloses further set up to: and a plurality of drainage plates with different angles are fixedly arranged at the bottom of the desulfurization pipe.

Through above-mentioned technical scheme, in the alkaline solution was gone into through the desulfurization pipe to the flue gas, can be with the even wider scope of direction of flue gas through the drainage plate to the dispersion flue gas makes the flue gas can fully contact with alkaline solution, and then can improve desulfurization effect.

The utility model discloses further set up to: the alkaline solution tank is internally provided with a floating plate, the floating plate floats on the liquid level of alkaline solution, the area of the floating plate is smaller than that of the bottom surface of the alkaline solution tank, and the floating plate is provided with a through hole, the diameter of which is larger than the outer diameter of the desulfurization pipe and is used for the desulfurization pipe to penetrate through.

Through above-mentioned technical scheme, the kickboard floats all the time on the liquid level under the effect of liquid buoyancy to when starter motor, order about desulfurization pipe pivoted in-process, can cause the liquid level to float, can effectively push down liquid level splash through the kickboard, go out in order to prevent that alkali lye splash from leading to the fact the damage to the personnel.

The utility model discloses further set up to: the improved soda lye tank is characterized in that floating rods are fixedly arranged on the peripheral side walls of the floating plates, floating balls are fixedly arranged on the floating rods, surrounding edges are arranged on the peripheral inner walls of the soda lye tank along the vertical direction, the floating balls are arranged in a space formed by the surrounding edges and the tank walls of the soda lye tank, and slots for the floating rods to penetrate are formed in the vertical direction of the surrounding edges.

Through above-mentioned technical scheme, guaranteeing that the kickboard can float along with the liquid level in-process from top to bottom, can effectively restrict the position of kickboard horizontal direction through four floaters to avoid the kickboard to float along with the liquid level and on striking the desulfurization pipe, influence the desulfurization pipe and normally rotate.

The utility model discloses further set up to: the part of the side wall of the lye tank, which is positioned above the liquid level of the alkaline solution, is provided with a liquid inlet pipe, the liquid inlet pipe is provided with a liquid inlet flow valve, the lower part of the side wall of the lye tank is provided with a liquid discharge pipe, and the liquid discharge pipe is provided with a liquid discharge flow valve.

Through the technical scheme, during work, personnel can open the liquid inlet flow valve and the liquid discharge flow valve simultaneously, adjust the liquid inlet flow valve and the liquid discharge flow valve flow switch, keep the liquid inlet pipe and the liquid discharge pipe unblocked and the liquid inlet and liquid discharge flow is consistent, so as to continuously fill new alkaline solution into the alkaline solution tank and discharge alkaline solution after neutralization reaction, thereby reaching the alkaline balance of the alkaline solution in the alkaline solution tank as far as possible, and preventing the alkaline solution from being over-saturated and losing the neutralization adsorption capacity to sulfide.

The utility model discloses further set up to: and a PH meter is also arranged on the liquid discharge pipe.

Through above-mentioned technical scheme, the pH meter that sets up can monitor the pH valve of lye tank interior solution at any time to the staff knows the degree of lye tank interior acid-base neutralization reaction through the pH valve, and then can learn desulfurization effect.

The utility model discloses further set up to: the liquid level sensor is arranged on the outer wall of the smoke tube and located below the motor, and the buzzer is further arranged on the outer wall of the smoke tube and located above the liquid level sensor and electrically connected with the liquid level sensor.

Through above-mentioned technical scheme, when pouring into a large amount of alkaline solution in the lye tank at first, the liquid level overflows to level sensor and can trigger bee calling organ, leads to bee calling organ to send out the police dispatch newspaper, need stop to continue to pour into alkaline solution in the lye tank this moment to prevent that solution from overflowing the motor and leading to the motor to drench the damage.

The utility model discloses further set up to: the lye tank is provided with the shower along the internal perisporium, the shower is located lye tank top opening part.

Through above-mentioned technical scheme, because the granule dust is adulterated in the flue gas, after pouring into solution with it, these granule dusts can be adsorbed by the solution and subside to on the tank bottom of lye tank, can form thick one deck on the tank bottom of lye tank in the long term in the past, thereby the staff need regularly clear away these precipitates from the lye tank, concrete operation is, need at first discharge away the solution in the lye tank, then use the instrument to clear up these precipitates, let in the running water in to the shower pipe among the cleaning process, the running water sprays on the cell wall and the tank bottom of lye tank, cleaning process can accelerate, the cleaning efficiency is improved.

To sum up, the utility model discloses following beneficial effect has:

1. the flue gas is introduced into the alkaline solution, and sulfides in the flue gas can be subjected to acid-base neutralization reaction with the alkaline solution and are absorbed by neutralization, so that the content of sulfides in the flue gas can be effectively reduced, the flue gas desulfurization effect is achieved, and the flue gas reaches the emission standard;

2. the desulfurization pipe rotates in the working process, so that the flue gas blown into the alkaline solution can be rotationally sprayed out from the spray opening, the contact area of the flue gas and the alkaline solution is enlarged, and the desulfurization effect is improved;

3. the floating plate always floats on the liquid surface under the action of liquid buoyancy, so that water splash on the liquid surface can be pressed, and the alkali liquor splash is prevented from splashing out to cause injury to personnel.

Drawings

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

FIG. 2 is a sectional view showing the internal structure of the alkali solution tank according to the present embodiment.

Fig. 3 is a schematic structural diagram for embodying the floating plate in the present embodiment.

Reference numerals: 1. a smoke pipe; 2. a lye tank; 3. a desulfurization pipe; 4. an annular tooth; 5. a motor; 6. a gear; 7. an ejection port; 8. a drainage plate; 9. a floating plate; 10. perforating; 11. a float rod; 12. a floating ball; 13. surrounding edges; 14. a slot; 15. a liquid inlet pipe; 16. a liquid inlet flow valve; 17. a liquid discharge pipe; 18. a liquid discharge flow valve; 19. a pH meter; 20. a liquid level sensor; 21. a buzzer; 22. and (4) a spray pipe.

Detailed Description

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

Example (b): a sulfide circulating absorption device for a power plant boiler is shown in figure 1 and comprises a smoke pipe 1 connected with the boiler and a lye tank 2 arranged on the ground, wherein before work, alkaline solution is filled into the lye tank 2, can be strong alkaline solution such as NaOH and KOH, and can be subjected to acid-base neutralization reaction with an acid medium. The flue gas pipe 1 vertically extends downwards to the lye tank 2, the bottom of the flue gas pipe 1 is rotatably connected with the desulphurization pipe 3, the desulphurization pipe 3 is communicated with the flue gas pipe 1, and the lower part of the desulphurization pipe 3 extends to the position below the liquid level of the alkaline solution, so that the flue gas generated by boiler combustion enters the flue gas pipe 1 and can be filled into the alkaline solution through the desulphurization pipe 3, and because sulfide in the flue gas is acidic, the flue gas can be subjected to acid-base neutralization reaction with the alkaline solution and is neutralized and adsorbed to reduce the content of sulfide in the flue gas, and the flue gas finally subjected to sulfide removal can be blown out of the liquid level in the form of bubbles and is discharged into the air.

As shown in fig. 2, the part of the desulfurization pipe 3 above the liquid level is fixedly provided with an annular tooth 4 along the peripheral wall, a motor 5 is fixedly installed on the outer wall of the smoke pipe 1, a gear 6 is fixedly arranged on an output shaft of the motor 5, the gear 6 is meshed with the annular tooth 4, and a plurality of injection ports 7 are formed in the part of the desulfurization pipe 3 below the liquid level along the peripheral wall, so that during operation, a worker can start the motor 5, the desulfurization pipe 3 is driven to rotate through the meshing of the gear 6 and the annular tooth 4, the desulfurization pipe 3 rotates, and then the smoke blown into the alkaline solution can be rotationally injected out from the injection ports 7, so that the contact area between the smoke and the alkaline solution is increased, and the desulfurization effect is improved. In addition, be provided with the different drainage plate 8 of a plurality of angles at 3 bottom openings of desulfurization pipe, the flue gas through the even direction to wider scope of drainage plate 8 to the dispersion flue gas makes the flue gas can fully contact with alkaline solution, further improves desulfurization effect.

Referring to fig. 2, when the alkaline solution is filled into the alkaline solution tank 2, it is necessary to pay attention to the fact that the liquid level does not reach the motor 5, so as to prevent the motor 5 from being burnt due to the humidity of the motor 5, so that the liquid level sensor 20 is fixedly disposed on the outer wall of the smoke tube 1 below the motor 5 for sensing the liquid level, and the buzzer 21 is fixedly disposed on the outer wall of the smoke tube 1 above the liquid level sensor 20, the buzzer 21 is electrically connected with the liquid level sensor 20, so that when the liquid level rises to the liquid level sensor 20, the buzzer 21 triggers the alarm, and at this time, the buzzer 21 pulls up the alarm, and the operator stops filling the alkaline solution into the alkaline solution tank 2, thereby protecting the motor 5 and avoiding the above situations.

As shown in FIG. 1, a liquid inlet pipe 15 is disposed on the upper portion of one side wall of the lye tank 2, the liquid inlet pipe 15 is located above the liquid level, a liquid outlet pipe 17 is disposed on the lower portion of one side wall of the lye tank 2 away from the liquid inlet pipe 15, a liquid inlet flow valve 16 and a liquid outlet flow valve 18 are disposed on the liquid inlet pipe 15 and the liquid outlet pipe 17, respectively, the flow rate of the solution flowing in and out can be controlled by the liquid inlet flow valve 16 and the liquid outlet flow valve 18, so that during the working process, a worker needs to open the liquid inlet pipe 15 and the liquid outlet pipe 17 to keep the liquid inlet pipe 15 and the liquid outlet pipe 17 unblocked, then adjust the liquid inlet flow valve 16 and the liquid outlet flow valve 18 to make the liquid inlet flow rate and the liquid outlet flow rate of the liquid inlet pipe 15 and the liquid outlet pipe 17 consistent to keep the liquid level in a constant state, then continuously fill new alkaline solution into, so as to maintain the alkaline balance of the alkaline solution in the alkaline solution tank 2 as much as possible, and prevent the alkaline solution from being over saturated and losing the neutralization and adsorption capacity to the sulfide. In addition, in order that the staff can monitor the pH value of the solution in the lye tank 2 constantly, a PH meter 19 can be arranged on the liquid discharge pipe 17, the pH value displayed by the PH meter 19 is used for knowing the degree of acid-base neutralization reaction in the lye tank 2, and then the desulfurization effect can be known.

As shown in fig. 2, still be provided with the kickboard 9 in the lye tank 2, the area of kickboard 9 is less than lye tank 2 bottom surface area, perforation 10 has been seted up to the intermediate position department of kickboard 9, perforation 10 diameter is greater than the desulfurization pipe 3 external diameter, desulfurization pipe 3 passes the kickboard 9 downwards from perforation 10, the kickboard 9 can float all the time on the liquid level under the effect of liquid buoyancy, thereby can cause the liquid level to float and splash at desulfurization pipe 3 rotation in-process, can effectively push down the splash through the kickboard 9, in order to prevent that lye splash from splashing, have corrosivity and cause the injury to the staff. Simultaneously, the surface of water is pushed down to kickboard 9, can prevent that the direct vertical upwards of flue gas that gets into in the alkali lye from bulging the surface of water with the form of bubble, and the vertical rebound of bubble that the flue gas formed reaches kickboard 9, receives the back that blocks of kickboard 9, can move to the space between kickboard 9 and the lye tank 2 cell wall along kickboard 9 lower surface and bulge the surface of water again, discharges in the air to the time that the flue gas stayed in alkaline solution has been prolonged, can further improve desulfurization effect.

As shown in fig. 2 and 3, a floating rod 11 is fixedly arranged in the middle of the peripheral side wall of the floating plate 9, a floating ball 12 is fixedly arranged at one end of the floating rod 11 far from the floating plate 9, a surrounding edge 13 is vertically arranged in the middle of the peripheral inner wall of the lye tank 2, a certain space is defined between the surrounding edge 13 and the inner wall of the lye tank 2 for placing the floating ball 12, a slot 14 for the floating rod 11 to pass through is vertically formed in the surrounding edge 13, the four floating balls 12 are respectively arranged in the space formed by the four surrounding edges 13 and the inner wall of the lye tank 2, the floating ball 12 can float up and down along with the floating plate 9 along with the height of the liquid level, but the floating ball 12 is limited in the space, so that the position of the floating plate 9 in the horizontal direction can be effectively limited, and the floating plate 9 can be prevented from impacting the desulfurization pipe 3 along with the horizontal floating.

As shown in fig. 1, since the flue gas may be doped with a large amount of particle dust, when the particle dust meets liquid, the particle dust may be adsorbed by the solution and gradually deposited on the bottom of the lye tank 2, which is inconvenient to clean, so that the spray pipe 22 may be disposed around the inner wall of the lye tank 2, the spray pipe 22 is communicated to the external tap water pipeline, and the spray pipe 22 is located on the upper portion of the lye tank 2, the spray opening at the bottom of the spray pipe 22 faces the inner wall of the lye tank 2, so that when the precipitate needs to be cleaned, the reaction solution in the lye tank 2 needs to be drained, then tap water is introduced into the spray pipe 22, and the tap water sprays onto the inner wall around the lye tank 2, so as to firstly flush the inner wall of the lye tank 2, and the water flows downwards towards the bottom of the lye tank 2 along the inner wall of the lye tank 2, and further flush the precipitate at the bottom of the lye tank 2.

The operation process is as follows: flue gas that the boiler burning produced gets into in tobacco pipe 1, finally get into lye tank 2 through desulfurization pipe 3 in, the sulphide in the flue gas takes place acid-base neutralization reaction with the alkaline solution in the lye tank 2 after, is adsorbed by the neutralization, the flue gas after the final purification can be with the form of bubble the liquid level of effluvium, discharge to the air in, at this in-process, but staff's starter motor 5 work, the meshing through gear 6 and ring tooth 4 drives desulfurization pipe 3 and rotates, desulfurization pipe 3 rotates and then can make the flue gas of effluvium in the alkaline solution follow injection mouth 7 rotatory injection away, with the area of contact of increaseing flue gas and alkaline solution, improve desulfurization effect.

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 (8)

1. The utility model provides a boiler sulphide cyclic absorption device of power plant which characterized in that: including tobacco pipe (1) of connecting the boiler and lye tank (2) of pouring into alkaline solution, tobacco pipe (1) downwardly extending to lye tank (2) in, tobacco pipe (1) bottom is rotated and is connected with desulfurization pipe (3) that are linked together with tobacco pipe (1), below alkaline solution's liquid level is arranged in to desulfurization pipe (3) lower part, desulfurization pipe (3) upper portion is provided with annular tooth (4) along the periphery wall is fixed, be provided with motor (5) on tobacco pipe (1) outer wall, be provided with gear (6) with annular tooth (4) engaged with on the output shaft of motor (5), a plurality of injection mouths (7) have been seted up along the periphery wall to desulfurization pipe (3) lower part.

2. The power plant boiler sulphide cycle absorption unit of claim 1, wherein: and a plurality of drainage plates (8) with different angles are fixedly arranged at the bottom of the desulfurization pipe (3).

3. The power plant boiler sulphide cycle absorption unit of claim 1, wherein: be provided with kickboard (9) in lye tank (2), kickboard (9) float on the liquid level of alkaline solution, kickboard (9) area is less than lye tank (2) bottom surface area, set up perforation (10) that the diameter is greater than desulfurization pipe (3) external diameter and supplies desulfurization pipe (3) to run through on kickboard (9).

4. The power plant boiler sulphide cycle absorption unit of claim 3, wherein: all fixed being provided with on kickboard (9) lateral wall all around float bar (11), the fixed floater (12) that is provided with on float bar (11), lye tank (2) are provided with surrounding edge (13) along vertical direction on the inner wall all around, in surrounding edge (13) and the space of the cell wall formation of lye tank (2) were arranged in to floater (12), slot (14) that supply float bar (11) to pass are seted up along vertical direction in surrounding edge (13).

5. The power plant boiler sulphide cycle absorption unit of claim 1, wherein: the part of the side wall of the lye tank (2) above the liquid level of the alkaline solution is provided with a liquid inlet pipe (15), the liquid inlet pipe (15) is provided with a liquid inlet flow valve (16), the lower part of the side wall of the lye tank (2) is provided with a liquid discharge pipe (17), and the liquid discharge pipe (17) is provided with a liquid discharge flow valve (18).

6. The power plant boiler sulphide cycle absorption unit of claim 5, wherein: and a PH meter (19) is also arranged on the liquid discharge pipe (17).

7. The power plant boiler sulphide cycle absorption unit of claim 1, wherein: the smoke tube is characterized in that a liquid level sensor (20) is arranged on the outer wall of the smoke tube (1), the liquid level sensor (20) is located below the motor (5), a buzzer (21) is further arranged on the outer wall of the smoke tube (1) and located above the liquid level sensor (20), and the buzzer (21) is electrically connected with the liquid level sensor (20).

8. The power plant boiler sulphide cycle absorption unit of claim 1, wherein: the alkaline solution tank (2) is provided with a spray pipe (22) along the inner peripheral wall, and the spray pipe (22) is positioned at the opening at the top of the alkaline solution tank (2).

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