CN219424104U - Flue gas desulfurization device of thermal power plant - Google Patents

Abstract

The utility model discloses a flue gas desulfurization device of a thermal power plant, which comprises a support frame, a desulfurization barrel arranged in the middle of the top end of the support frame, a smoke inlet arranged on one side of the outer wall of the desulfurization barrel, a smoke outlet arranged on the top end of the desulfurization barrel, a liquid inlet pipe arranged on one side of the outer wall of the desulfurization barrel and a desulfurization component arranged in the desulfurization barrel, wherein the desulfurization component comprises a plurality of pressurizing pumps arranged on the periphery of the desulfurization barrel and on the outer side of the top end of the support frame, a water pumping pipe arranged on one side of the pressurizing pumps, a pressurizing pipe arranged on the top of the pressurizing pumps, a plurality of spray pipe networks arranged on the inner upper part of the desulfurization barrel, a plurality of nozzles arranged on the outer side of the bottom end of the spray pipe networks and a demisting layer arranged on the upper part of the spray pipe networks, the spray pipe networks are uniformly distributed on the inner upper part of the desulfurization barrel, the pressurizing pumps are connected with the water pumping pipes and the pressurizing pipes, one ends of the pressurizing pipes are connected with the spray pipe networks, and the nozzles are distributed in a left-right cross mode. Solves the problems that sulfur dioxide in the flue gas can not be absorbed completely, the desulfurization efficiency is low, the absorbed sulfide can not be reused and a large amount of resources are wasted.

Description

Flue gas desulfurization device of thermal power plant

Technical Field

The utility model belongs to the technical field of thermal power plants, and particularly relates to a flue gas desulfurization device of a thermal power plant.

Background

The power generation of the thermal power plant can lead the burnt coal to generate a great amount of waste gas containing sulfur and nitrate, and the waste gas is discharged into the atmosphere to generate pollution to form acid rain. The desulfurization and denitrification equipment of the thermal power plant is a device for treating the waste gas containing a large amount of sulfur and nitrate.

For example, the application number is CN202020325111.0 the utility model discloses a flue gas desulfurization device of a thermal power plant, which comprises a barrel, the upper end of the barrel is provided with an upper barrel cover, the top of the upper barrel cover is fixedly provided with an air outlet pipe, the lower end of the barrel is provided with a lower barrel cover, the bottom of the lower barrel cover is fixedly provided with an air inlet pipe, the inner wall of the barrel is provided with a heat insulation layer, the inside of the heat insulation layer is provided with a vacuum heat insulation plate, the inner wall of the heat insulation layer is provided with a flue gas adsorption layer, the inside of the flue gas adsorption layer is provided with a flue gas adsorption cotton plate, the inside of the barrel is provided with a desulfurization chamber, the inside of the desulfurization chamber is provided with a spiral shaft, the surface of the spiral shaft is provided with a spiral blade, and the heat insulation layer and the vacuum heat insulation plate are utilized for reducing the heat of flue gas discharged by the thermal power plant, so that the service life of the barrel is prolonged, the smoke exhaust effect is enhanced, the flue gas adsorption layer and the flue gas adsorption cotton plate can be adsorbed and treated, and the flue gas adsorption cotton plate is of a detachable structure, and can be detached and replaced at will.

Based on the retrieval of above-mentioned patent to and combine prior art equipment discovery, the exhaust efficiency of flue gas is low in can solving flue gas desulfurization in the above-mentioned equipment application time, strengthen the effect of discharging fume, improve barrel life, but adsorb the flue gas through adsorbing cotton board alone, the cost is not only increased and be unfavorable for the operation need often be changed, reach saturation when adsorbing cotton adsorption effect, untimely change can lead to adsorption effect not good, cause the sulfur dioxide in the part flue gas to be discharged to the air and cause atmospheric pollution by adsorbing just not being adsorbed easily, adsorbed flue gas on the adsorption cotton board can not carry out recycle, waste resources.

Disclosure of Invention

Aiming at the problems existing in the prior art, the utility model provides a flue gas desulfurization device of a thermal power plant, which is provided with a device for spraying lime water to flue gas, so that sulfur dioxide in the flue gas is fully contacted with the lime water to form calcium sulfate precipitate, the calcium carbonate precipitate can be recycled after being collected, the problems that sulfur dioxide in the flue gas cannot be fully adsorbed, environmental pollution is easily caused by that the sulfur dioxide drifts to the atmosphere along with the flue gas are easily caused, and meanwhile, the collected sulfides can be collected for reuse.

The utility model discloses a flue gas desulfurization device of a thermal power plant, which comprises a support frame, a desulfurization barrel arranged in the middle of the top end of the support frame, a smoke inlet arranged on one side of the outer wall of the desulfurization barrel, a smoke outlet arranged at the top end of the desulfurization barrel, a liquid inlet pipe arranged on one side of the outer wall of the desulfurization barrel and a desulfurization component arranged in the desulfurization barrel, wherein the desulfurization component comprises a plurality of booster pumps arranged on the periphery of the desulfurization barrel and on the outer side of the top end of the support frame, a water pumping pipe arranged on one side of the booster pumps, a pressure pipe arranged on the top of the booster pumps, a plurality of spray pipe networks arranged on the inner upper side of the desulfurization barrel, a plurality of nozzles arranged on the outer side of the bottom end of the spray pipe networks and a demisting layer arranged on the upper side of the spray pipe networks, the pressure pump is uniformly distributed above the desulfurization barrel, one end of the pressure pipe is connected with the spray pipe networks, and the nozzles are distributed in a left-right cross manner.

As the preferred mode of the utility model, the middle part of the bottom end in the desulfurization bucket is provided with the stirring shaft, the outer side wall of the stirring shaft is uniformly provided with a plurality of stirring blades, the bottom end of the stirring shaft is positioned at the motor outside the bottom end of the desulfurization bucket, and the stirring blades are fixedly connected with the stirring shaft.

As the preferable mode of the utility model, the outer side wall of the lower end of the stirring shaft is provided with a filter screen which is positioned below the inside of the desulfurization barrel, and the filter screen is clamped with the desulfurization barrel.

As the preferable mode of the utility model, the outer side of the top end of the supporting frame is positioned at the periphery of the desulfurization bucket and is uniformly provided with oxygen tanks, one side of each oxygen tank is provided with an oxygenation pump, one side of each oxygenation pump is connected with an oxygenation pipe, the oxygenation pipes are positioned above the filter screen, and the oxygenation pipes are fixedly connected with the desulfurization bucket.

As the preferable mode of the utility model, one side of the outer wall of the desulfurization bucket is provided with a discharge pipe, the discharge pipe is positioned above the filter screen, and the discharge pipe is communicated with the desulfurization bucket.

Preferably, the network channel inside the mist elimination layer has a plurality of V-shapes.

Preferably, a filter layer is arranged on the inner side of the smoke outlet.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, a support frame, a desulfurization bucket at the top end of the support frame, a smoke inlet at one side of the outer wall of the desulfurization bucket, a smoke outlet at the top end of the desulfurization bucket, a liquid inlet pipe at one side of the outer wall of the desulfurization bucket, a plurality of pressurizing pumps at the outer side of the top end of the support frame, a water pumping pipe at one side of the pressurizing pumps, a pressurizing pipe at the top of the pressurizing pumps, a spraying pipe network at the upper part in the desulfurization bucket, nozzles at the outer side of the bottom end of the spraying pipe network, a barrier net below the spraying pipe network and a demisting layer above the spraying pipe network are arranged, the spraying pipe network is uniformly distributed in the desulfurization bucket, the pressurizing pumps are connected with the water pumping pipe and the pressurizing pipe, one end of the pressurizing pipe is connected with the spraying pipe network, the nozzles are distributed in a left-right cross manner, lime water is conveyed into the desulfurization bucket through the liquid inlet to occupy one third of the desulfurization bucket, flue gas is conveyed into the desulfurization bucket through the smoke inlet, the pressurizing pump is opened to convey the lime water in the desulfurization bucket to the spraying pipe through the water pumping pipe and the pressurizing pipe, the sprayed lime water contacts sulfur dioxide in the flue gas, the water in the lime water and the sulfur dioxide is adsorbed and the sulfur dioxide in the lime water falling to the lower part is fully contacted with the lime water to form calcium sulfite precipitate. The effects of dust fall, temperature reduction and sulfur removal on the flue gas are achieved.

2. According to the utility model, the stirring shaft is arranged in the middle of the bottom end in the desulfurization bucket, the stirring shaft is provided with the stirring blades, the outer side wall of the stirring shaft is uniformly provided with the stirring blades, the bottom end of the stirring shaft is positioned at the outer side of the bottom end of the desulfurization bucket, the stirring blades are fixedly connected with the stirring shaft, and the stirring shaft is driven by the motor to drive the stirring blades to stir lime water, so that calcium sulfite generated by the reaction of sulfur dioxide dissolved in water and lime water fully contacts with oxygen in the lime water to generate calcium sulfate.

3. According to the utility model, the filter screen is arranged on the outer side wall of the lower end of the stirring shaft and is clamped with the desulfurization barrel, so that calcium sulfate precipitation in lime water can be concentrated above the filter screen, and the phenomenon that the device is damaged due to the fact that the calcium sulfate precipitation blocks a nozzle by a pressurizing pump to send the precipitation in lime water in the desulfurization barrel into a spray pipe net is avoided.

4. According to the utility model, the oxygen tank is uniformly distributed on the outer side of the top end of the supporting frame and positioned around the desulfurization barrel, the oxygenation pump is arranged on one side of the oxygen tank, the oxygenation pipe is connected with one side of the oxygenation pump and positioned above the filter screen, the oxygenation pipe is fixedly connected with the desulfurization barrel, and the oxygenation pump conveys oxygen in the oxygen tank into lime water above the filter screen through the oxygenation pipe, so that calcium sulfite generated after the reaction of a dropped sulfur dioxide solution and the lime water generates calcium sulfate under the action of the oxygen, the rapid oxidation of the calcium sulfite into the calcium sulfate can be promoted, the precipitation of the calcium sulfate is enhanced, the liquid-gas ratio is reduced, the calcium-sulfur ratio is reduced, and the evaporation of water is reduced.

5. According to the utility model, the discharge pipe is arranged on one side of the outer wall of the desulfurization bucket, and is positioned above the filter screen, and the discharge pipe is communicated with the desulfurization bucket, so that the generated calcium sulfite can be discharged along with lime water through the discharge pipe.

6. According to the utility model, the net channels on the inner side of the demisting layer are in a plurality of V shapes, when flue gas upwards passes through the V-shaped net channels, the flue gas can be adhered to the inner wall of the V-shaped pipeline and can fall under the influence of gravity, and the loss of lime water can be reduced by reducing the carrying of slurry and returning the slurry to the lime water below the desulfurization bucket.

7. According to the utility model, the filter layer is arranged on the inner side of the smoke outlet, and the sulfur dioxide gas is adsorbed and filtered by the filter layer, so that less part of sulfur dioxide is prevented from being adsorbed by lime water and discharged out of polluted atmosphere through the smoke outlet.

Drawings

FIG. 1 is a schematic diagram of a structure provided by an embodiment of the present utility model;

FIG. 2 is a left side view provided by an embodiment of the present utility model;

FIG. 3 is a cross-sectional view at B-B in FIG. 2 provided by an embodiment of the present utility model;

fig. 4 is an enlarged view of a portion a of fig. 3 provided by an embodiment of the present utility model.

In the figure: 1. a support frame; 2. a desulfurizing barrel; 3. a smoke inlet; 4. a smoke outlet; 5. a liquid inlet pipe; 6. a pressurizing pump; 7. a water pumping pipe; 8. a pressurizing tube; 9. a spraying network; 10. a nozzle; 11. a defogging layer; 12. a stirring shaft; 13. stirring the leaves; 14. a motor; 15. a filter screen; 16. an oxygen tank; 17. an oxygenation pump; 18. an oxygenation tube; 19. a discharge pipe; 20. and (5) a filter layer.

Detailed Description

For a further understanding of the utility model, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings.

The structure of the present utility model will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 4, the flue gas desulfurization device in a thermal power plant provided by the embodiment of the utility model comprises a support frame 1, a desulfurization barrel 2 arranged in the middle of the top end of the support frame 1, a smoke inlet 3 arranged on one side of the outer wall of the desulfurization barrel 2, a smoke outlet 4 arranged on the top end of the desulfurization barrel 2, a liquid inlet pipe 5 arranged on one side of the outer wall of the desulfurization barrel 2 and a desulfurization component arranged in the desulfurization barrel 2, wherein the desulfurization component comprises a plurality of pressurizing pumps 6 arranged on the periphery of the desulfurization barrel 2 and on the outer side of the top end of the support frame 1, a water pumping pipe 7 arranged on one side of the pressurizing pumps 6, a pressurizing pipe 8 arranged on the top of the pressurizing pumps 6, a plurality of spray pipes 9 arranged on the inner upper side of the desulfurization barrel 2, a plurality of nozzles 10 arranged on the outer side of the bottom end of the spray pipes 9, a blocking net arranged below the spray pipes 9 and a demisting layer 11 arranged above the spray pipes 9, wherein the spray pipes 9 are uniformly distributed above the desulfurization barrel 2, the pressurizing pumps 6 are connected with the pressurizing pipes 7 and the pressurizing pipes 8, one ends of the pressurizing pipes 8 are connected with the spray pipes 9, and the spray pipes 10 are distributed in a left-right cross mode.

Referring to fig. 1 and 3, a stirring shaft 12 is arranged in the middle of the bottom end in the desulfurization bucket 2, a plurality of stirring blades 13 are uniformly distributed on the outer side wall of the stirring shaft 12, the bottom end of the stirring shaft 12 is positioned at a motor 14 outside the bottom end of the desulfurization bucket 2, and the stirring blades 13 are fixedly connected with the stirring shaft 12.

The scheme is adopted: through setting up (mixing) shaft 12, stirring leaf 13 and motor 14, in order that motor 14 drive (mixing) shaft 12 drive stirring leaf 13 stir lime water for the calcium sulfite that the sulfur dioxide of dissolving water and lime water reaction produced fully contacts with the oxygen in the lime water produces calcium sulfate.

Referring to fig. 4, a filter screen 15 is disposed on the outer side wall of the lower end of the stirring shaft 12 and located at the inner lower side of the desulfurization bucket 2, and the filter screen 15 is clamped with the desulfurization bucket 2.

The scheme is adopted: through setting up filter screen 15, in order to concentrate the calcium sulfate deposit in the lime water in filter screen 15 top, avoid force (forcing) pump 6 to escort the deposit in the lime water in the desulfurization bucket 2 together in spray tube net 9, the calcium sulfate deposit blocks up nozzle 10 and causes the device to damage.

Referring to fig. 1 and 3, the outer side of the top end of the supporting frame 1 is located around the desulfurization bucket 2, oxygen tanks 16 are uniformly distributed, an oxygenation pump 17 is arranged on one side of each oxygen tank 16, an oxygenation pipe 18 is connected to one side of each oxygenation pump 17, the oxygenation pipe 18 is located above the filter screen 15, and the oxygenation pipes 18 are fixedly connected with the desulfurization bucket 2.

The scheme is adopted: through setting up oxygen jar 16, oxygenation pump 17 and oxygenation pipe 18, in order that oxygenation pump 17 carries the oxygen in the oxygen jar 16 into the lime water of filter screen 15 top through oxygenation pipe 18 for the calcium sulfite that the sulfur dioxide solution that drops produced after reacting with lime water produces calcium sulfate under the effect of oxygen, can promote calcium sulfite to oxidize into calcium sulfate rapidly, strengthens the precipitation of calcium sulfate, reduces the liquid-gas ratio, reduces the calcium-sulfur ratio, reduces the evaporation of moisture.

Referring to fig. 1 and 2, a discharge pipe 19 is disposed at one side of the outer wall of the desulfurization tub 2, the discharge pipe 19 is located above the filter screen 15, and the discharge pipe 19 is connected with the desulfurization tub 2 in a communicating manner.

The scheme is adopted: by arranging the discharge pipe 19, the discharge pipe 19 is positioned above the filter screen 15, and the discharge pipe 19 is communicated with the desulfurization bucket 2 so as to conveniently discharge generated calcium sulfite along with lime water through the discharge pipe 19.

Referring to fig. 4, the network path inside the mist elimination layer 11 has a plurality of V-shapes.

The scheme is adopted: the pipeline on the inner side of the demisting layer 11 is provided with a plurality of V-shaped pipelines, so that when flue gas upwards passes through the V-shaped pipelines, the flue gas can be adhered to the inner wall of the V-shaped pipeline and can fall under the influence of gravity, and the loss of lime water can be reduced by reducing slurry to carry and returning the slurry to lime water below the desulfurization barrel 2.

Referring to fig. 4, a filter layer 20 is provided inside the smoke outlet 4.

The scheme is adopted: the filter layer 20 is arranged on the inner side of the smoke outlet 4, so that sulfur dioxide gas is adsorbed and filtered by the filter layer 20, and less part of sulfur dioxide can be prevented from being adsorbed by lime water and discharged to pollute the atmosphere through the smoke outlet 4.

The working principle of the utility model is as follows:

when the desulfurization device is used, lime water is conveyed into the desulfurization bucket 2 through the liquid inlet pipe 5 to occupy one third of the desulfurization bucket 2, flue gas is conveyed into the desulfurization bucket 2 through the flue gas inlet 3, the pressurizing pump 6 is started to convey the lime water in the desulfurization bucket 2 to the spraying pipe network 9 through the water suction pipe 7 and the pressurizing pipe 8 to be sprayed out through the spray nozzle 10, sprayed mist lime water contacts sulfur dioxide in the flue gas, moisture in the lime water and sulfur dioxide in the flue gas are adsorbed and fall into lime water below and fully contact with the lime water to form calcium sulfite precipitation, part of flue gas is not adsorbed enough to still continuously rise through a network channel of the mist removal layer 11 to enable most of flue gas to adhere to the inner wall of the V-shaped pipeline, the flue gas is accumulated into lime water with a certain weight to fall into the lower side of the desulfurization bucket 2 under the influence of gravity, the oxygenation pump 17 is started to convey oxygen into the lime water through the oxygenation pipe 18, and meanwhile the motor 14 is started to drive the stirring shaft 12 to drive the stirring blade 13 to enable calcium sulfite in the lime to fully react with oxygen to generate calcium sulfate.

To sum up: this flue gas desulfurization device of thermal power plant, through support frame 1, desulfurization bucket 2, inlet 3, exhaust port 4, feed liquor pipe 5 and desulfurization part, solved sulfur dioxide in the flue gas can not fully adsorbed, can not reuse absorbing sulphide and extravagant a large amount of resources's problem, also can cool down, remove dust etc. to the flue gas simultaneously play good filter effect.

It is noted that relational terms such as first and second, and the like are 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. Moreover, 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 utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a flue gas desulfurization device of thermal power plant, includes support frame (1), locates desulfurization bucket (2) in support frame (1) top middle part, sets up in inlet (3) of desulfurization bucket (2) outer wall one side, locates exhaust port (4) on desulfurization bucket (2) top, locates feed liquor pipe (5) of desulfurization bucket (2) outer wall one side and locates the desulfurization part in desulfurization bucket (2), its characterized in that: the desulfurization part is including locating a plurality of force (forcing) pumps (6) that are located desulfurization bucket (2) all around in support frame (1) top outside, locating forcing pump (6) one side's drinking-water pipe (7), locating forcing pump (6) top pressure pipe (8), locating a plurality of spouting pipe network (9) of top in desulfurization bucket (2), locating a plurality of nozzle (10) in spouting pipe network (9) bottom outside and locating defogging layer (11) of spouting pipe network (9) top, spout pipe network (9) top evenly distributed in desulfurization bucket (2), forcing pump (6) connect drinking-water pipe (7) and forcing pipe (8), spout pipe network (9) are connected to forcing pipe (8) one end, cross distribution about nozzle (10) direction.

2. A flue gas desulfurization device in a thermal power plant according to claim 1, wherein: the middle part of the bottom in the desulfurization bucket (2) is provided with a stirring shaft (12), a plurality of stirring blades (13) are uniformly distributed on the outer side wall of the stirring shaft (12), the bottom end of the stirring shaft (12) is positioned on the motor (14) on the outer side of the bottom end of the desulfurization bucket (2), and the stirring blades (13) are fixedly connected with the stirring shaft (12).

3. A flue gas desulfurization device in a thermal power plant according to claim 2, wherein: the lower end lateral wall of (12) stirring axle just is equipped with filter screen (15) below being located in desulfurization bucket (2), filter screen (15) and desulfurization bucket (2) joint.

4. A flue gas desulfurization device in a thermal power plant according to claim 3, wherein: the utility model discloses a desulfurization bucket, including support frame (1), desulfurization bucket (2), oxygen jar (16) evenly distributed all around are located on the top outside of support frame (1), oxygen jar (16) one side is equipped with oxygenation pump (17), oxygenation pipe (18) are connected to oxygenation pump (17) one side, oxygenation pipe (18) are located filter screen (15) top, oxygenation pipe (18) and desulfurization bucket (2) fixed connection.

5. A flue gas desulfurization device in a thermal power plant according to claim 1, wherein: one side of the outer wall of the desulfurization bucket (2) is provided with a discharge pipe (19), the discharge pipe (19) is positioned above the filter screen (15), and the discharge pipe (19) is communicated with the desulfurization bucket (2).

6. A flue gas desulfurization device in a thermal power plant according to claim 1, wherein: the net channels on the inner side of the demisting layer (11) are in a plurality of V shapes.

7. A flue gas desulfurization device in a thermal power plant according to claim 1, wherein: a filter layer (20) is arranged on the inner side of the smoke outlet (4).