CN219252195U

CN219252195U - Flue gas desulfurization system

Info

Publication number: CN219252195U
Application number: CN202223612966.XU
Authority: CN
Inventors: 朱俊; 蒋锡根
Original assignee: Zhejiang Qianyao Environmental Engineering Co ltd
Current assignee: Zhejiang Qianyao Environmental Engineering Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-27
Anticipated expiration: 2032-12-30

Abstract

The application relates to a flue gas desulfurization system, it includes scrubbing mechanism, first casing and installs the second casing in first casing, the second casing is equipped with into the mouth, outlet flue and sulfur removal cavity, it all communicates with the sulfur removal cavity to advance mouth and outlet flue, be equipped with in the second casing and spray the mechanism, be used for adsorbing particulate matter in the flue gas, constitute the blowdown cavity between first casing and the second casing, second casing is close to outlet flue department and communicates with first casing, scrubbing mechanism includes rotating electrical machines, pivot and a plurality of water condensation strip, the one end of water condensation strip and the circumference fixed connection of pivot, the other end of water condensation strip is the free end, the pivot rotates the intercommunication department of being connected in first casing and second casing, rotating electrical machines drive pivot rotates and forces the water condensation strip to rotate, be used for getting rid of sewage into the blowdown cavity. This application can be mutually supported through a plurality of mechanisms and remove sulphur and dispel the dampness to the flue gas to reduce the content of sulphide in the exhaust flue gas, improve the efficiency of flue gas sulphur removal.

Description

Flue gas desulfurization system

Technical Field

The application relates to the field of chemical production, in particular to a flue gas desulfurization system.

Background

In the existing flue gas desulfurization tower, the wet flue gas or other industrial waste gas is involved in removing sulfur oxides, and the technological process, form and mechanism are different, mainly slurry such as inorganic raw materials (alkaline substances) is used as a detergent, namely, the flue gas is washed in the desulfurization tower in a spraying mode, so that sulfide in the flue gas is removed.

The sprayed detergent is usually atomized or fine water-drop-shaped, and can remove sulfides in the flue gas, but has poor water-gas separation effect after desulfurization, is easily influenced by flue gas flow, is wrapped by the flue gas and is discharged through a chimney, and causes secondary pollution to the atmosphere.

Disclosure of Invention

In order to improve the effect of the post-water gas separation of flue gas desulfurization, the application provides a flue gas desulfurization system.

The flue gas desulfurization system adopts the following technical scheme:

the utility model provides a flue gas desulfurization system, including scrubbing mechanism, first casing and install the second casing in first casing, the second casing is equipped with into the mouth, play mouth and sulfur removal cavity, it all communicates with the sulfur removal cavity to advance mouth and play mouth, be equipped with in the second casing and spray the mechanism, be used for adsorbing particulate matter in the flue gas, constitute the blowdown cavity between first casing and the second casing, second casing is close to play mouth department and first casing intercommunication, scrubbing mechanism includes rotating electrical machines, pivot and a plurality of water condensation strip, the one end and the circumference fixed connection of pivot of water condensation strip, the other end of water condensation strip is the free end, the pivot rotates the intercommunication department of being connected in first casing and second casing, rotating electrical machines drive pivot rotation forces the water condensation strip and rotates, be used for throwing absorptive sewage into the blowdown cavity along water condensation strip length direction.

By adopting the technical scheme, the flue gas enters the second shell from the flue gas inlet, the spraying mechanism sprays the detergent for neutralizing sulfide in the flue gas towards the inside of the second shell, and the atomized detergent fully contacts the flue gas in the cavity of the second shell to wash the flue gas, so that sulfide in the flue gas is removed; in the rising process of the flue gas, part of atomized detergent and the inner wall of the second shell are liquefied to form sewage, so that the content of sulfide and detergent in the flue gas is reduced; the rotating shaft drives the condensation bar to rotate, so that on one hand, mist and atomized detergent can be accelerated to mix, the efficiency of absorbing sulfide by the detergent is improved, and on the other hand, the condensation bar can absorb atomized detergent in flowing smoke, so that the sewage neutralized with sulfide is absorbed on the surface of the condensation bar, and the sewage on the surface of the condensation bar is thrown into a sewage draining cavity along the length direction of the condensation bar under the action of centrifugal force to complete gas-liquid separation.

Optionally, the spraying mechanism comprises at least two spraying rings, the spraying rings are mounted on the inner wall of the second shell, a plurality of spraying ports are formed in the spraying rings along the circumferential direction of the second shell, and the spraying ports are arranged towards the direction of the moving path of the flue gas

Through adopting above-mentioned technical scheme, cyclic annular setting spray mouthful simultaneous spraying's atomized detergent can directly mix with the flue gas, has improved flue gas desulfurization's efficiency, and two at least spray rings can mutually support and improve the homogeneity degree of atomized detergent in the second casing, strengthen the effect that the sulfide in the flue gas was got rid of to the detergent.

Optionally, the second casing bottom is equipped with the hydrops fill, and the bottom intercommunication of the top second casing of hydrops fill, the internal diameter of hydrops fill is towards deviating from the scrubbing mechanism direction shrink.

Through adopting above-mentioned technical scheme, there is sewage of condensation in the second casing can flow into the hydrops fill along the inner wall that the second can, and sewage is collected in the hydrops fill bottom along the inner wall that the hydrops fill was inclined, can avoid sewage to deposit in the second casing bottom and form large tracts of land dirt on the one hand, on the other hand can reduce the evaporation capacity of sewage, has reduced the risk of flue gas secondary pollution.

Optionally, the first casing is connected with the orifice plate, and the orifice plate is connected with the pivot rotation, is connected in the circumference of orifice plate and the inner wall of first casing, orifice plate intercommunication outlet flue and sulfur removal cavity.

Through adopting above-mentioned technical scheme, the orifice plate can supply the flue gas to pass through, and the remaining partial detergent in the flue gas forms sewage in orifice plate towards scrubbing mechanism one side condensation, drips to the water condensation strip surface, and rotatory getting rid of the blowdown cavity of throwing into along with the water condensation strip.

Optionally, the outlet is located on one side of the orifice plate away from the decontamination mechanism, and the inlet is lower than the spraying mechanism.

Through adopting above-mentioned technical scheme, the atomized detergent can mix with ascending flue gas under the effect of gravity to improve the mixed degree of detergent and flue gas, improve the effect of detergent desulfurization, remaining sewage in the flue gas condenses in the orifice plate one side that deviates from the mouth of taking in the cigarette, has further reduced sulphide and remaining detergent in the flue gas.

Optionally, the hydrops fill is connected with the collecting pipe, and the collecting pipe includes first branch pipe and second branch pipe, and first branch pipe and hydrops fill intercommunication, second branch pipe and blowdown cavity intercommunication, first branch pipe and second branch pipe, and the collection mouth has been seted up to first casing, and first branch pipe and second branch pipe all communicate with the collection mouth.

By adopting the technical scheme, the sewage in the hydrops bucket and the sewage draining cavity can be uniformly discharged from the collecting port, so that the risk of secondary pollution is reduced.

Optionally, the collecting port is connected with a drain valve.

Through adopting above-mentioned technical scheme, when the in-process of flue gas circulation, close the drain valve for the flue gas only can be followed out the exit of outlet flue, avoids flue gas mixed sewage to leak, and operating personnel can open the drain valve at regular time and discharge the sewage in hydrops fill and the blowdown cavity.

Optionally, the second casing is connected with the overflow pipe, and overflow pipe both ends communicate with second casing and collecting pipe respectively, and overflow pipe and second casing's intercommunication department is less than the setting of inlet.

By adopting the technical scheme, the overflow pipe can guide the sewage in the effusion bucket into the collecting pipe, so that the risk of sewage flowing backward into the smoke inlet is reduced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the flue gas enters the second shell from the flue gas inlet, the spraying mechanism sprays a detergent for neutralizing sulfide in the flue gas towards the inside of the second shell, the atomized detergent fully contacts the flue gas in a cavity of the second shell, and the flue gas is washed, so that sulfide in the flue gas is removed;

2. in the rising process of the flue gas, part of atomized detergent and the inner wall of the second shell are liquefied to form sewage, so that the content of sulfide and detergent in the flue gas is reduced, and the sewage on the surface of the water condensation bar is thrown into a sewage draining cavity along the length direction of the water condensation bar under the action of centrifugal force to finish gas-liquid separation;

3. the rotating shaft drives the condensation bar to rotate, so that on one hand, the mixing of mist and atomized detergent can be accelerated, the sulfide adsorption efficiency of the detergent is improved, and on the other hand, the condensation bar can adsorb the atomized detergent in the flowing flue gas, so that the sewage with the neutralized sulfide is adsorbed to the surface of the condensation bar;

4. this application can be mutually supported through a plurality of mechanisms and remove sulphur and dispel the dampness to the flue gas to reduce the content of sulphide in the exhaust flue gas.

Drawings

FIG. 1 is a schematic diagram of a flue gas desulfurization system according to the present application.

FIG. 2 is a schematic cross-sectional view of a flue gas desulfurization system of the present application.

FIG. 3 is a schematic diagram of the operation of a flue gas desulfurization system according to the present application.

Reference numerals illustrate: 1. a first housing; 11. a blowdown chamber; 12. a collection port; 2. a second housing; 21. a smoke inlet; 22. a smoke outlet; 23. a sulfur removal chamber; 3. a decontamination mechanism; 31. a rotating electric machine; 32. a rotating shaft; 33. condensing water strips; 4. a spraying mechanism; 41. a spray ring; 42. a spray head; 5. an orifice plate; 6. a liquid accumulation bucket; 7. a collection pipe; 71. a first branch pipe; 72. a second branch pipe; 73. a drain valve; 8. and (3) an overflow pipe.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-3.

The embodiment of the application discloses a flue gas desulfurization system.

Referring to fig. 1 and 2, the flue gas desulfurization system includes a first housing 1 and a second housing 2 fixedly connected to the inside of the first housing 1, the second housing 2 is provided with a flue gas inlet 21, a flue gas outlet 22 and a sulfur removal chamber 23, and the flue gas inlet 21 and the flue gas outlet 22 are both communicated with the sulfur removal chamber 23. The smoke inlet 21 is near the bottom side wall of the second housing 2 and the smoke outlet 22 is near the top of the second housing 2, so that the smoke to be treated flows from the bottom of the second housing 2 towards the top of the second housing 2. A space is reserved between the first shell 1 and the second shell 2 to form a pollution discharge cavity 11, and a spraying mechanism 4 is arranged on the inner wall of the second shell 2 and is used for desulfurizing the flue gas entering the sulfur removal cavity 23. The top of the second housing 2 is provided with an opening such that the blowdown chamber 11 and the sulfur removal chamber 23 communicate. The opening of the second shell 2 is provided with a decontamination mechanism 3 for absorbing water vapor in the flue gas and condensing the water vapor into sewage to be led into the pollution discharge cavity 11.

The spraying mechanism 4 comprises two groups of spraying rings 41 and a plurality of spray heads 42, the outer wall of the spraying rings 41 is fixedly connected with the inner wall of the second shell 2, the two groups of spraying rings 41 are arranged in parallel and spaced, and the two groups of spraying rings 41 are higher than the smoke inlet 21. The spray heads 42 are distributed and fixed on the inner wall of the spray ring 41 in an array, the spray heads 42 are communicated with the spray ring 41, and the spray heads 42 are obliquely arranged towards the bottom of the second shell 2, so that the spray heads 42 can uniformly spray the detergent for removing sulfides towards the inside of the second shell 2.

Referring to fig. 2 and 3, the decontamination mechanism 3 includes a rotary motor 31, a rotation shaft 32, and a condensation bar 33, and a housing of the rotary motor 31 is fixedly connected to a top outer wall of the first housing 1. The output shaft of the rotating motor 31 passes through the first shell 1 and is opposite to the opening of the second shell 2, the output shaft of the rotating motor 31 is fixedly connected with the rotating shaft 32, the central axis of the output shaft of the rotating motor 31 is coaxial with the central axis of the rotating shaft 32, the outer wall of the rotating shaft 32 is connected with a plurality of condensation bars 33, one ends of the condensation bars 33 are uniformly fixed on the circumference of the rotating shaft 32, and the other ends of the condensation bars 33 are free ends. In this embodiment, the water condensation bar 33 is a defatted cotton sliver, and in other embodiments, the water condensation bar 33 may be a sponge bar or a silica gel bar.

The rotating motor 31 drives the rotating shaft 32 to rotate, the water condensation bar 33 moves along with the rotating shaft 32 in a circular mode, the water condensation bar 33 swings under the action of centrifugal force, and the free end of the water condensation bar 33 faces the heat dissipation cavity. When the mixture of the flue gas and the detergent is mixed more fully under the stirring action of the condensation bar 33, and the flue gas passes through the region where the condensation bar 33 is located, sewage in the flue gas is adsorbed on the surface of the condensation bar 33 and is converged towards the free end of the condensation bar 33 under the action of centrifugal force, and finally is thrown into the sewage disposal chamber 11, so that gas and liquid are separated.

The rotating shaft 32 is rotationally connected with the orifice plate 5, the circumference of the orifice plate 5 is fixedly connected with the inner wall of the first shell 1, the orifice plate 5 is positioned between the smoke outlet 22 and the rotating shaft 32, and a plurality of holes are formed in the orifice plate 5 for smoke circulation. The sewage remained in the flue gas discharged from the flue gas outlet 22 is condensed on one side of the orifice plate 5 close to the rotating shaft 32, and forms water drops which fall on the surface of the condensation bar 33, and the sewage is thrown into the sewage discharging cavity 11 along with the rotation of the condensation bar 33.

The second casing 2 diapire is equipped with hydrops fill 6, and the top of hydrops fill 6 and the inner wall fixed connection of second casing 2 for hydrops fill 6 and the intercommunication of sulfur removal cavity 23, the internal diameter of hydrops fill 6 is towards deviating from pivot 32 one end shrink, and the sewage of condensation in the second casing 2 can flow into hydrops fill 6 bottom.

The effusion bucket 6 is connected with the collecting pipe 7, and collecting pipe 7 includes first branch pipe 71 and second branch pipe 72, and first branch pipe 71 communicates with effusion bucket 6, and second branch pipe 72 communicates with blowdown cavity 11. The first shell 1 is provided with a collecting port 12, the first branch pipe 71 and the second branch pipe 72 are communicated with the collecting port 12 together, and a drain valve 73 is arranged at the collecting port 12. The second casing 2 is connected with overflow pipe 8, and the both ends of overflow pipe 8 communicate sulfur removal cavity 23 and collecting pipe 7 respectively, and overflow pipe 8 and second casing 2 intercommunication department are less than into cigarette mouth 21, reduce the risk that sewage backward flow advances cigarette mouth 21.

The implementation principle of the embodiment 1 is as follows: the flue gas with treatment enters the sulfur removal chamber 23 from the flue gas inlet 21, and the spray head 42 continuously injects atomized detergent into the sulfur removal chamber 23 so that the flue gas and the detergent are mixed to remove sulfides in the flue gas. The partially reacted detergent adheres to the inner wall of the second housing 2 to form sewage which flows into the liquid accumulation hopper 6 for collection. The partially reacted detergent rises to the decontamination mechanism 3 along with the flue gas, the rotating motor drives the rotating shaft 32 to rotate, the condensation bar 33 is forced to rotate around the rotating shaft 32, and the condensation bar 33 can adsorb liquid or fog detergent in the flue gas passing through. The water condensation bar 33 throws the sewage containing detergent and sulfide into the sewage chamber 11 under the centrifugal force. The sewage in the flue gas passing through the condensation bar 33 is condensed on the surface of the pore plate 5, water drops are formed to fall on the surface of the condensation bar 33 and are thrown into the sewage discharging cavity 11, and the desulfurized flue gas is discharged from the flue gas outlet 22. The operator opens the drain valve 73 to uniformly drain the sewage in the sewage chamber 11 of the liquid accumulation bucket 6 from the collection port 12.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A flue gas desulfurization system, characterized by: including scrubbing mechanism (3), first casing (1) and install second casing (2) in first casing (1), second casing (2) are equipped with into tobacco inlet (21), play tobacco inlet (22) and sulfur removal cavity (23), advance tobacco inlet (21) and play tobacco inlet (22) all with sulfur removal cavity (23) intercommunication, be equipped with in second casing (2) spray mechanism (4) for adsorb particulate matter in the flue gas, constitute blowdown cavity (11) between first casing (1) and second casing (2), second casing (2) are close to tobacco outlet (22) department and first casing (1) intercommunication, scrubbing mechanism (3) are including rotating electrical machines (31), pivot (32) and a plurality of water condensation strip (33), the one end of water condensation strip (33) is the free end with the circumference fixed connection of pivot (32), pivot (32) rotate and are connected in first casing (1) and second casing (2) and constitute blowdown cavity (11), second casing (2) are close to the rotation of going into water condensation strip (33), and are used for forcing rotation of rotation direction (31) and are used for driving water condensation strip (33) to get rid of rotation of sewage.

2. The flue gas desulfurization system of claim 1, wherein: the spraying mechanism (4) comprises at least two spraying rings (41), the spraying rings (41) are arranged on the inner wall of the second shell (2), a plurality of spraying ports are formed in the spraying rings (41) along the circumferential direction of the second shell (2), and the spraying ports are arranged towards the direction of the moving path of the smoke.

3. The flue gas desulfurization system of claim 1, wherein: the bottom of the second shell (2) is provided with a liquid accumulation bucket (6), the bottom of the second shell (2) at the top of the liquid accumulation bucket (6) is communicated, and the inner diameter of the liquid accumulation bucket (6) contracts towards the direction deviating from the dirt removing mechanism (3).

4. The flue gas desulfurization system of claim 1, wherein: the utility model discloses a sulfur removal device, including first casing (1), orifice plate (5), pivot (32), first casing (1) is connected with orifice plate (5), orifice plate (5) and pivot (32) rotate to be connected, the circumference of orifice plate (5) is connected in the inner wall of first casing (1), orifice plate (5) intercommunication smoke outlet (22) and sulfur removal cavity (23).

5. The flue gas desulfurization system of claim 4, wherein: the smoke outlet (22) is positioned on one side of the pore plate (5) deviating from the decontamination mechanism (3), and the smoke inlet (21) is positioned at a position lower than the spraying mechanism (4).

6. A flue gas desulfurization system according to claim 3, wherein: the utility model discloses a collecting pipe, including hydrops fill (6), collecting pipe (7) include first branch pipe (71) and second branch pipe (72), first branch pipe (71) and hydrops fill (6) intercommunication, second branch pipe (72) and blowdown cavity (11) intercommunication, first branch pipe (71) and second branch pipe (72), collection mouth (12) have been seted up to first casing (1), first branch pipe (71) and second branch pipe (72) all communicate with collection mouth (12).

7. The flue gas desulfurization system of claim 6, wherein: the collecting port (12) is connected with a drain valve (73).

8. The flue gas desulfurization system of claim 6, wherein: the second shell (2) is connected with an overflow pipe (8), two ends of the overflow pipe (8) are respectively communicated with the second shell (2) and the collecting pipe (7), and the communicating position of the overflow pipe (8) and the second shell (2) is lower than the smoke inlet (21).