CN115040952B

CN115040952B - Carbon anode tail gas treatment equipment

Info

Publication number: CN115040952B
Application number: CN202210982734.9A
Authority: CN
Inventors: 丁邦平; 吴浩; 刘栋梁; 赵志海; 李文博; 董丽昌
Original assignee: Hebei Hongke Carbon Co ltd
Current assignee: Hebei Hongke Carbon Co ltd
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2022-11-04
Anticipated expiration: 2042-08-16
Also published as: CN115040952A

Abstract

The invention relates to carbon anode tail gas treatment equipment which comprises a dedusting and cooling chamber, a desulfurizing tower and a smoke exhaust tower, wherein a plurality of guide plates are horizontally arranged at the upper part of the dedusting and cooling chamber, the guide plates are vertically staggered to form a zigzag smoke channel, a water inlet pipe and a smoke exhaust pipe I are arranged at the top of the dedusting and cooling chamber, a water discharge pipe and an aeration component are arranged at the lower part of the dedusting and cooling chamber, and one end of the aeration component is connected with the smoke inlet pipe I; the lower part of the desulfurizing tower is provided with a circulating joint, the middle part of the desulfurizing tower is horizontally provided with a plurality of water spraying pipes from top to bottom, the upper part of the desulfurizing tower is provided with a demister, the water spraying pipes are uniformly provided with a plurality of spray heads, one ends of the plurality of water spraying pipes are connected with a circulating pipe, and the circulating pipe is connected with the circulating joint through a water pump; the lower part of the desulfurizing tower is provided with a second smoke inlet pipe, the top of the desulfurizing tower is provided with a second smoke exhaust pipe, and the first smoke exhaust pipe is connected with the second smoke inlet pipe through a third connecting pipe; and a third smoke inlet pipe and a hot gas joint are arranged at the lower part of the smoke exhaust tower, and the third smoke inlet pipe is connected with the second smoke exhaust pipe through a fourth connecting pipe.

Description

Carbon anode tail gas treatment equipment

Technical Field

The invention belongs to the technical field of flue gas purification, and particularly relates to carbon anode tail gas treatment equipment.

Background

In the roasting production process of the anode carbon block, emitted gas can contain harmful substances such as sulfur dioxide, fluoride, asphalt smoke, nitrogen oxide, dust and the like, and if the emitted gas is not treated, serious air pollution can be caused in the atmosphere, such as acid gases such as sulfur dioxide, hydrofluoric acid and the like, and the gas has high corrosivity. Therefore, the anode roasting flue gas of the carbon plant must be purified and then discharged.

The wet desulphurization process has the advantages of high desulphurization efficiency, low operation cost, mature technology, simple operation and the like, and occupies an absolutely dominant position in the field of flue gas desulphurization purification treatment. The flue gas at the outlet of the wet desulphurization system is in a saturated or supersaturated state, the temperature of the flue gas is 45-55 ℃, and the water vapor accounts for 7-18%. The wet desulphurization system is a water user in a power plant, and the desulphurization evaporation water amount of a million units is about 100t/h. The problems that high-temperature saturated clean flue gas carries a large amount of water vapor and liquid drops, a large amount of water is consumed, and the consumption of wet desulphurization water resources is overlarge are increasingly shown, and with the upgrading of environmental protection standards and environmental requirements, the problems of visual pollution such as 'big white smoke' and 'chimney rain' after the conventional pollutants are removed are gradually emphasized. The government has been in continuous need of no visible white smoke plume in the discharge port of the chimney of enterprises at all around the year.

Aiming at the problems, the invention provides the carbon anode tail gas treatment equipment which has the advantages of energy conservation, consumption reduction, good treatment effect, low operation cost, dehumidification and whitening of the flue gas and elimination of white smoke plume of the chimney.

Disclosure of Invention

The invention aims to solve the technical problem of providing the carbon anode tail gas treatment equipment which has the advantages of energy conservation, consumption reduction, good treatment effect and low operation cost, can dehumidify and whiten the flue gas and eliminate white plume of a chimney.

In order to solve the problems, the technical scheme adopted by the invention is as follows:

a carbon anode tail gas treatment device comprises a dedusting and cooling chamber, a desulfurizing tower and a smoke exhaust tower, wherein a plurality of guide plates are horizontally arranged at the upper part of the dedusting and cooling chamber, the guide plates are arranged in a vertically staggered manner to form a zigzag smoke channel, a water inlet pipe and a first smoke exhaust pipe are arranged at the top of the dedusting and cooling chamber, a water outlet pipe and an aeration component are arranged at the lower part of the dedusting and cooling chamber, and one end of the aeration component is connected with the first smoke inlet pipe;

the lower part of the desulfurizing tower is provided with a circulating joint, the middle part of the desulfurizing tower is horizontally provided with a plurality of water spraying pipes from top to bottom, the upper part of the desulfurizing tower is provided with a demister, the water spraying pipes are uniformly provided with a plurality of spray heads, one ends of the plurality of water spraying pipes are connected with a circulating pipe, and the circulating pipe is connected with the circulating joint through a water pump; the lower part of the desulfurizing tower is provided with a second smoke inlet pipe, the top of the desulfurizing tower is provided with a second smoke outlet pipe, and the first smoke outlet pipe is connected with the second smoke inlet pipe through a third connecting pipe;

and a third smoke inlet pipe and a hot gas joint are arranged at the lower part of the smoke exhaust tower, and the third smoke inlet pipe is connected with the second smoke exhaust pipe through a fourth connecting pipe.

As an implementation mode of the invention, the aeration component is horizontally arranged at the lower part of the dedusting and cooling chamber and comprises a bottom plate and an aeration pipe which is buckled at the upper part of the bottom plate in an arc-shaped surface, two ends of the aeration pipe are closed, the left end of the aeration pipe is connected with the first smoke inlet pipe, and a plurality of aeration holes are uniformly formed in the arc-shaped surface of the aeration pipe.

As an implementation mode of the invention, a plurality of cleaning frames which are matched with the bottom plate and the inner profile of the aeration pipe are uniformly arranged in the aeration pipe along the length direction, hairbrushes are uniformly arranged on the arc-shaped surface of each cleaning frame, the interiors of the plurality of cleaning frames are connected with a horizontally arranged connecting rod through a support, and the right end of the connecting rod penetrates out of a through hole at the right end of the aeration pipe and then is connected with a telescopic device arranged on a dedusting and cooling chamber; a plurality of dust discharge holes are uniformly formed in the bottom plate along the length direction, and the distance between every two adjacent dust discharge holes is equal to the distance between every two adjacent cleaning frames.

In one embodiment of the present invention, a ventilation plate is provided between the free end of the upper deflector and the lower deflector, and water flows down along the ventilation plate.

In one embodiment of the present invention, the deflector is a hollow plate, and a first tubular heat exchanger is disposed inside the hollow plate to reduce the surface temperature of the deflector.

The system comprises a sedimentation tank, a first buffer tank, a second buffer tank and a clean water tank, wherein the sedimentation tank is divided into a sedimentation tank, the first buffer tank, the second buffer tank and the clean water tank, the sedimentation tank is respectively connected with the first buffer tank and the second buffer tank through communicating pipes, the first buffer tank and the second buffer tank are respectively connected with the clean water tank through communicating pipes, a water return pipe is arranged at the lower part of the sedimentation tank, a water outlet pipe is arranged at the upper part of the clean water tank, the water outlet pipe is connected with the water inlet pipe through a second connecting pipe, and the water return pipe is connected with a water discharge pipe through a first connecting pipe.

As an implementation mode of the invention, a second heat exchanger is arranged in the sedimentation tank, an air inlet of the second heat exchanger is communicated with outside air, and an air outlet of the second heat exchanger is connected with a hot air joint through a fifth connecting pipe.

As an embodiment of the invention, the lower part of the desulfurizing tower is provided with a third heat exchanger, and the bottom of the desulfurizing tower is provided with a deslagging pipe.

As an embodiment of the present invention, the lower portion of the smoke exhaust tower is communicated with a mixing chamber, the smoke inlet pipe three and the hot gas joint are arranged at the left end of the mixing chamber, a first fan blade assembly is vertically arranged in the mixing chamber, a plurality of second fan blade assemblies are horizontally arranged at the lower portion of the smoke exhaust tower, and an open funnel portion is arranged at the upper portion of the smoke exhaust tower.

As an embodiment of the invention, temperature sensors are arranged in the sedimentation tank, the clean water tank, the dedusting and cooling chamber, the desulfurizing tower and the smoke exhaust tower; a liquid level meter is arranged at the lower part of the dedusting and cooling chamber; and the first smoke exhaust pipe, the second smoke exhaust pipe and the funnel part of the smoke exhaust tower are respectively provided with a smoke on-line detection device.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:

according to the carbon anode tail gas treatment equipment provided by the invention, tail gas is dedusted and cooled through the dedusting and cooling chamber, SO that fine dust in the tail gas is dissolved in water, water vapor in high-temperature tail gas is cooled and liquefied, and SO in the flue gas is removed through the desulfurizing tower ₂ And HF and other acidic gases are discharged from the exhaust tower, and tail gas and hot gas are introduced into the lower part of the exhaust tower simultaneously to heat the tail gas and further remove white and mist, so that the device has the advantages of energy conservation, consumption reduction, good treatment effect, low operation cost, and capabilities of dehumidifying and whitening the flue gas and eliminating white smoke plume of a chimney.

The water storage tank is arranged, water in the dedusting and cooling chamber is discharged to the sedimentation tank, and water in the clear water tank is added into the dedusting and cooling chamber to realize water circulation; the sedimentation tank sediments impurities in the circulating water, heat exchange is realized through a heat exchanger II, heat exchanged from the dedusting and cooling chamber is transferred to the heat exchanger II, the heat is led into the smoke exhaust tower, and the temperature of the tail gas is raised; the first buffer pool and the second buffer pool realize cooling precipitation of circulating water; the water cleanliness in the clean water tank is improved, the temperature is reduced, and a tap water feeding pipe is further arranged on the clean water tank to supplement water according to the water consumption condition.

Dust removal cooling room structural design is ingenious, and rivers down flow from last along the guide plate, can carry out the physics cooling to the guide plate, and tail gas is up-going motion from the bottom along flue gas channel, has realized the condensation of cooling and steam through rivers and guide plate lower surface to rivers have still formed the water curtain when flowing on the below guide plate from the top flow deflector, and tail gas passes harmful substance and particle in can reducing tail gas from the water curtain. Through setting up aeration subassembly and brush, can tentatively remove dust to tail gas, and when the indoor liquid level of dust removal cooling was higher than the aeration pipe, discharge tail gas through the mode of aeration, can make tail gas emerge the liquid level from the liquid level down, remove dust the cooling to tail gas.

Drawings

Fig. 1 is a schematic structural view of the present invention.

FIG. 2 is a schematic view of the structure of the cooling and dust removing chamber of the present invention.

Fig. 3 is a partially enlarged schematic view of a portion a of fig. 2.

Fig. 4 is a partially enlarged schematic view of fig. 2 at B.

Fig. 5 is a further enlarged partial schematic view at B in fig. 2.

Fig. 6 is a schematic view of the structure of the aeration module according to the present invention.

FIG. 7 is a schematic view of the structure of the cleaning assembly of the present invention.

FIG. 8 is a schematic view of another embodiment of the cleaning assembly of the present invention.

Fig. 9 is a schematic top view of the pool of the present invention.

Wherein: 1 dust removal cooling chamber, 2 guide plate, 3 heat exchanger I, 4 air permeable plate, 401 air permeable hole, 5 sloping plate, 6 water inlet pipe, 7 drain pipe, 8 smoke inlet pipe I, 9 smoke outlet pipe I, 10 aeration component, 11 bottom plate, 12 dust outlet hole, 13 aeration pipe, 1301 through hole, 1302 protuberance, 14 aeration hole, 15 cleaning frame, 1501 sealing gasket, 1502 squeezing block, 1503 dust sweeping device, 16 brush, 17 support, 18 connecting rod, 1801 expansion device, 19 water storage tank, 1901 sedimentation tank, 1902 buffer tank I, 1903 buffer tank II, 1904 clean water tank, 20 communicating pipe, 21 water return pipe, 22 water outlet pipe, 23 heat exchanger II, 24 connecting pipe I, 25 connecting pipe II, 26 connecting pipe III, 27 desulfurizing tower, 28 smoke inlet pipe II, 29 slag outlet pipe, 30 circulating joint, 31 circulating pipe, 32 water spray pipe, 33 spray nozzle, 34 demister, 35 smoke outlet pipe II, 36 heat exchanger III, 37 connecting pipe IV, 38V, 39 mixing chamber, 40 fan blade component I, 41 smoke exhaust tower, 42 funnel part, 43 fan blade component II, 44 smoke inlet pipe, 45 water inlet pipe, and 46 hot gas water pump.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail and fully with reference to the following embodiments.

The carbon anode tail gas treatment equipment shown in fig. 1 and fig. 2 comprises a dedusting and cooling chamber 1, a desulfurizing tower 27 and a smoke discharging tower 41, wherein a plurality of guide plates 2 are horizontally arranged at the upper part of the dedusting and cooling chamber 1, the guide plates 2 are connected with the front and rear inner walls of the dedusting and cooling chamber 1, the guide plates 2 are arranged in a staggered manner up and down, namely, the guide plates 2 which are adjacent up and down are respectively connected with the left and right different side walls of the dedusting and cooling chamber 1 to form a zigzag smoke channel, a water inlet pipe 6 and a smoke discharging pipe I9 are arranged at the top part of the dedusting and cooling chamber 1, a water discharging pipe 7 and an aeration component 10 are arranged at the lower part of the dedusting and cooling chamber 1, the left end of the aeration component 10 is connected with a first smoke inlet pipe 8, and a draught fan is arranged at the first smoke inlet pipe 8;

a circulation joint 30 is arranged at the lower part of the desulfurizing tower 27, a plurality of spray pipes 32 are horizontally arranged at the middle part from top to bottom, a demister 34 is arranged at the upper part, a plurality of spray heads 33 are uniformly arranged on the spray pipes 32, one ends of the spray pipes 32 are connected with a circulation pipe 31, and the circulation pipe 31 is connected with the circulation joint 30 through a water pump 46; a second smoke inlet pipe 28 is arranged at the lower part of the desulfurizing tower 27, a second smoke exhaust pipe 35 is arranged at the top part of the desulfurizing tower, and the first smoke exhaust pipe 9 is connected with the second smoke inlet pipe 28 through a third connecting pipe 26;

the lower part of the smoke exhaust tower 41 is provided with a third smoke inlet pipe 44 and a hot air joint 45, and the third smoke inlet pipe 44 is connected with the second smoke exhaust pipe 35 through a fourth connecting pipe 37.

According to the carbon anode tail gas treatment equipment provided by the invention, tail gas is dedusted and cooled through the dedusting and cooling chamber 1, SO that fine dust in the tail gas is dissolved in water, water vapor in the high-temperature tail gas is cooled and liquefied, alkali liquor is sprayed in the desulfurizing tower 27 through the spray nozzle 33, and SO in the flue gas is removed ₂ And HF and other acidic gases are discharged through the smoke exhaust tower 41, tail gas and hot gas are simultaneously introduced into the lower part of the smoke exhaust tower 41 to heat the tail gas, so that the tail gas is further whitened and demisted, the energy is saved, the consumption is reduced, the treatment effect is good, the operation cost is low, the smoke can be better dehumidified and whitened, and white smoke plume of a smoke tube is eliminated. 1 structural design of dust removal cooling room is ingenious, rivers down flow layer upon layer along guide plate 2 from last, can carry out the physics cooling to guide plate 2, tail gas is along up-going motion from the bottom of flue gas passageway, has realized the condensation of cooling and steam through rivers and the 2 lower surfaces of guide plate to rivers have still formed the water curtain when flowing to below guide plate 2 from 2 marginal facies of top guide plate, tail gas passes harmful substance and the particle in can reducing tail gas from the water curtain. In addition, the grooves are formed in the upper surface of the free end of the guide plate 2 along the length direction, so that water flow can be changed into dense strip-shaped water flow from a water curtain.

In this embodiment, the inlet tube 6 is arranged on the left side of the top of the dust-removing and cooling chamber 1, the smoke exhaust tube 9 is arranged on the right side of the top of the dust-removing and cooling chamber 1, the inclined plates 5 which are high on the left and low on the right are arranged at the bottom of the dust-removing and cooling chamber 1, and the drain tube 7 is arranged at the bottom of the right side of the dust-removing and cooling chamber 1 corresponding to the inclined plates 5.

As shown in fig. 2 and 6, the aeration assembly 10 is horizontally disposed at the lower portion of the dedusting and cooling chamber 1, and includes a bottom plate 11 and an aeration pipe 13 fastened to the upper portion of the bottom plate 11, two ends of the aeration pipe 13 are closed, the left end of the aeration pipe is connected to the first smoke inlet pipe 8, and a plurality of aeration holes 14 are uniformly formed in the arc surface of the aeration pipe 13. As shown in fig. 2 and 7, a plurality of cleaning frames 15 which are matched with the inner contours of the bottom plate 11 and the aeration pipe 3 are uniformly arranged in the aeration pipe 13 along the length direction, the arc-shaped surface of the upper part of each cleaning frame 15 is uniformly provided with a brush 16, the interiors of the plurality of cleaning frames 15 are connected with a horizontally arranged connecting rod 18 through a support 17, the right end of the connecting rod 18 penetrates out of a through hole 1301 at the right end of the aeration pipe 13 and then is connected with a telescopic device 1801 arranged on the dedusting and cooling chamber 1, and the telescopic device 1801 is a hydraulic rod or an air cylinder rod; a plurality of dust discharge holes 12 are uniformly formed in the bottom plate 11 along the length direction, the number of the dust discharge holes 12 is the same as that of the cleaning frames 15, and the distance between every two adjacent dust discharge holes 12 is equal to that between every two adjacent cleaning frames 15. Through setting up aeration subassembly 10 and brush 16, can carry out preliminary dust removal to tail gas, the dust of collecting up in aeration pipe 3 falls to bottom plate 11 below through dust exhaust hole 12 under the brush 16 sweeps, and brush 16 can clean aeration hole 14 simultaneously, prevents that the dust from collecting up the jam.

When in specific use, two use modes are provided, wherein the first mode is as follows: the liquid level in the dedusting and cooling chamber 1 is lower than the aeration pipe 13, and the cleaning frame 15 can be continuously or periodically cleaned when in use; the second method comprises the following steps: when the liquid level in the dedusting and cooling chamber 1 is higher than the aeration pipe 13, the tail gas is discharged in an aeration mode, so that the tail gas can emerge out of the liquid level under the liquid level to perform dedusting and cooling on the tail gas. The cleaning frame 15 can be used for cleaning regularly, when the cleaning frame is not used, the cleaning frame 15 stays at the position corresponding to the dust exhaust hole 12 to prevent water from entering, and when the cleaning frame needs to be used for cleaning, the liquid level of the dust removal and cooling chamber 1 is lower than the bottom plate 11 to perform cleaning operation. In order to prevent water from entering the dust exhaust hole 12, as shown in fig. 4 and 7, a sealing gasket 1501 is fixedly arranged at the bottom of the cleaning frame 15, the size of the sealing gasket 1501 is larger than that of the dust exhaust hole 12, a protrusion 1302 is arranged at the top of the inner wall of the aeration pipe 13 corresponding to the dust exhaust hole 12, the middle of the protrusion 1302 is thick, and two sides of the protrusion 1302 become thinner gradually, when the cleaning frame 15 moves to the dust exhaust hole 12 under the action of the telescopic device 1801, the protrusion 1302 tightly supports the cleaning frame 15, so that the sealing gasket 1501 is tightly supported at the dust exhaust hole 12 to prevent water from entering. As a further optimization, the top of the cleaning frame 15 is provided with a pressing block 1502 for pressing the cleaning frame 15, so that the sealing gasket 1501 can be tightly pressed against the dust exhaust hole 12. As a further optimization, as shown in fig. 5 and 8, the squeezing blocks 1502 are annularly arranged along the arc-shaped surface of the upper part of the washing rack 15, and the brushes 16 are arranged on the arc-shaped surface of the washing rack 15 at two sides of the squeezing blocks 1502, in this case, the protrusions 1302 are annularly arranged along the inner wall of the aeration pipe 13 and correspond to the squeezing blocks 1502. The sealing gasket 1501 is made of rubber or silica gel, and corners at two sides of the bottom of the sealing gasket 1501 are provided with fillets to prevent the edge of the sealing gasket 1501 from rubbing against the edge of the dust exhaust hole 12. Preferably, a dust sweeping device 1503 is further arranged below the sealing gasket 1501, the dust sweeping device 1503 is smaller than the dust exhaust hole 12 in size, and when the cleaning frame 15 moves to the position of the dust exhaust hole 12, the dust sweeping device 1503 is completely located in the dust exhaust hole 12 to prevent the sealing of the dust exhaust hole 12 from being affected. The dust sweeping device 1503 is a cleaning article such as bristles or soft cleaning cloth fixedly arranged below the sealing gasket 1501.

As shown in fig. 2 and 3, a ventilation plate 4 is disposed between the free end of the upper flow guiding plate 2 and the lower flow guiding plate 2, and ventilation holes 401 are uniformly distributed on the ventilation plate 4, so that water flows down along the ventilation plate 4. Through setting up ventilative, 4, be more favorable to forming the water curtain on ventilative board 4. As further optimization, the guide plate 2 is a hollow plate, and a tubular heat exchanger 3 is arranged inside the guide plate and used for reducing the surface temperature of the guide plate 2, so that the tail gas is favorably cooled.

As shown in fig. 1 and 9, the tail gas treatment device further includes a water storage tank 19, the water storage tank 19 is divided into a sedimentation tank 1901, a first cache tank 1902, a second cache tank 1903 and a clean water tank 1904, the sedimentation tank 1901 is respectively connected with the first cache tank 1902 and the second cache tank 1903 through a communicating pipe 20, the first cache tank 1902 and the second cache tank 1903 are respectively connected with the clean water tank 1904 through a communicating pipe 20, a water return pipe 21 is arranged on the lower portion of the sedimentation tank 1901, a water outlet pipe 22 is arranged on the upper portion of the clean water tank 1904, the water outlet pipe 22 is connected with the water inlet pipe 6 through a second connecting pipe 25, and the water return pipe 21 is connected with the water outlet pipe 7 through a first connecting pipe 24. As a further optimization, a second heat exchanger 23 is arranged in the sedimentation tank 1901, an air inlet of the second heat exchanger 23 is communicated with the outside air, and an air outlet is connected with the hot gas joint 45 through a fifth connecting pipe 38.

The water storage tank 19 is arranged to realize heat recovery and impurity precipitation, water in the dedusting and cooling chamber 1 is discharged to the sedimentation tank 1901, and water in the clean water tank 1904 is added into the dedusting and cooling chamber 1 to realize water circulation; the sedimentation tank 1901 sediments impurities in the circulating water, realizes heat exchange through the second heat exchanger 23, transfers heat exchanged from the dedusting and cooling chamber 1 to the second heat exchanger 23, leads the heat to the smoke exhaust tower 41, and heats the tail gas; the first cache pool 1902 and the second cache pool 1903 realize cooling precipitation of circulating water; the cleanliness of water in the clean water tank 1904 is improved, the temperature is reduced, and a tap water feeding pipe is further arranged on the clean water tank 1904 to feed water according to the water consumption condition.

Preferably, a third heat exchanger 36 is arranged at the lower part of the desulfurization tower 27, a slag discharge pipe 29 is arranged at the bottom of the desulfurization tower 27, and the third heat exchanger 35 is in a spiral pipe shape and is used for reducing the temperature of water in the desulfurization tower 27 and further performing whitening and defogging.

As a further optimization, the lower part of the smoke exhaust tower 41 is communicated with a mixing chamber 39, the smoke inlet pipe three 44 and the hot gas joint 45 are arranged at the left end of the mixing chamber 39, a fan blade assembly one 40 is vertically arranged in the mixing chamber 39, a plurality of fan blade assemblies two 43 are horizontally arranged at the lower part of the smoke exhaust tower 41, and an open funnel part 42 is arranged at the upper part of the smoke exhaust tower 41. The first fan blade assembly 40 and the second fan blade assembly 43 both comprise a frame and fan blades arranged on the frame, and the fan blades rotate to fully mix tail gas and hot gas led in by the third smoke inlet pipe 44 and the hot gas joint 45 under the blowing of the air flow. By providing the funnel part 42, the space in which the exhaust gas can be discharged is enlarged, and the concentration and flow velocity of the exhaust gas discharged from the lower part of the exhaust tower 41 are lowered, thereby improving the effect of white elimination of the exhaust gas.

As a further optimization, the tail gas treatment equipment further comprises an electric tar precipitator arranged on the third connecting pipe 26 and/or the fourth connecting pipe 37 and used for trapping dust and liquid tar in the tail gas.

As an embodiment of the present invention, temperature sensors are disposed in the sedimentation tank 1901, the clean water tank 1904, the dedusting and cooling chamber 1, the desulfurizing tower 27 and the smoke exhaust tower 41; a liquid level meter is arranged at the lower part of the dedusting and cooling chamber 1; smoke online detection devices are arranged at the first smoke exhaust pipe 9, the second smoke exhaust pipe 35 and the funnel part 42 of the smoke exhaust tower 41; and the first connecting pipe 24, the second connecting pipe 25, the third connecting pipe 26, the circulating pipe 31, the fourth connecting pipe 37 and the fifth connecting pipe 38 are all provided with a water pump 46. The water pump 46, the temperature sensor, the liquid level meter and the flue gas online detection device are electrically connected with the control unit and are used for detecting the temperature, the liquid level and the flue gas concentration of each part, controlling the flow speed of water flow, alkali liquor and tail gas and better realizing the desulfurization and whitening of the tail gas.

Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art may still make modifications to the technical solutions described in the foregoing embodiments, or may substitute some technical features of the embodiments; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a carbon element anode tail gas treatment facility which characterized in that: the device comprises a dedusting and cooling chamber, a desulfurizing tower, a smoke exhaust tower and a water storage tank, wherein a plurality of guide plates are horizontally arranged at the upper part of the dedusting and cooling chamber, the guide plates are staggered up and down to form a zigzag flue gas channel, the guide plates are hollow plates, and a tubular heat exchanger I is arranged in the guide plates and used for reducing the surface temperature of the guide plates; the top of the dedusting and cooling chamber is provided with a water inlet pipe and a first smoke exhaust pipe, the lower part of the dedusting and cooling chamber is provided with a water discharge pipe and an aeration component, and one end of the aeration component is connected with the first smoke inlet pipe;

the aeration component is horizontally arranged at the lower part of the dedusting and cooling chamber and comprises a bottom plate and an aeration pipe buckled at the upper part of the bottom plate in an arc-shaped surface, two ends of the aeration pipe are closed, the left end of the aeration pipe is connected with the first smoke inlet pipe, and a plurality of aeration holes are uniformly formed in the arc-shaped surface of the aeration pipe; a plurality of cleaning frames matched with the bottom plate and the inner contour of the aeration pipe are uniformly arranged in the aeration pipe along the length direction, hairbrushes are uniformly arranged on the arc-shaped surface of each cleaning frame, the interiors of the plurality of cleaning frames are connected with a horizontally arranged connecting rod through a support, and the right end of the connecting rod penetrates out of a through hole at the right end of the aeration pipe and then is connected with a telescopic device arranged on a dedusting and cooling chamber; a plurality of dust discharge holes are uniformly formed in the bottom plate along the length direction, and the distance between every two adjacent dust discharge holes is equal to the distance between every two adjacent cleaning frames;

a sealing gasket is fixedly arranged at the bottom of the cleaning frame, the size of the sealing gasket is larger than that of the dust exhaust hole, a protrusion is arranged at the top of the inner wall of the aeration pipe corresponding to the dust exhaust hole, the middle of the protrusion is thick, and the two sides of the protrusion are gradually thinned; the top of the cleaning frame is provided with an extrusion block which is annularly arranged along the arc-shaped surface at the upper part of the cleaning frame, the two sides of the extrusion block are arranged on the arc-shaped surface of the cleaning frame, and the protrusions are annularly arranged along the inner wall of the aeration pipe and correspond to the extrusion block; a dust sweeping device is arranged below the sealing gasket and is bristles or cleaning cloth made of soft materials and fixedly arranged below the sealing gasket;

the lower part of the desulfurizing tower is provided with a circulating joint, the middle part of the desulfurizing tower is horizontally provided with a plurality of water spraying pipes from top to bottom, the upper part of the desulfurizing tower is provided with a demister, the water spraying pipes are uniformly provided with a plurality of spray heads, one ends of the plurality of water spraying pipes are connected with a circulating pipe, and the circulating pipe is connected with the circulating joint through a water pump; the lower part of the desulfurizing tower is provided with a second smoke inlet pipe, the top of the desulfurizing tower is provided with a second smoke exhaust pipe, and the first smoke exhaust pipe is connected with the second smoke inlet pipe through a third connecting pipe;

the lower part of the smoke exhaust tower is provided with a third smoke inlet pipe and a hot gas joint, and the third smoke inlet pipe is connected with the second smoke exhaust pipe through a fourth connecting pipe;

the sedimentation tank is separated for sedimentation tank, buffer memory pond one, buffer memory pond two and clean water basin, the sedimentation tank links to each other with buffer memory pond one and buffer memory pond two through communicating pipe respectively, buffer memory pond one links to each other with the clean water basin through communicating pipe with buffer memory pond two respectively, the sedimentation tank lower part is equipped with the wet return, clean water basin upper portion is equipped with the outlet pipe, the outlet pipe pass through connecting pipe two with the inlet tube links to each other, the wet return passes through connecting pipe one and links to each other with the drain pipe, be equipped with heat exchanger two in the sedimentation tank, the air inlet of heat exchanger two is linked together with the outside air, and the gas outlet passes through connecting pipe five and links to each other with hot gas joint.

2. The carbon anode tail gas treatment device according to claim 1, wherein: and a ventilating plate is arranged between the free end of the upper guide plate and the lower guide plate, so that water flows down along the ventilating plate.

3. The carbon anode off-gas treatment facility according to claim 1 or 2, characterized in that: and the lower part of the desulfurizing tower is provided with a heat exchanger III, and the bottom of the desulfurizing tower is provided with a slag discharge pipe.

4. The carbon anode off-gas treatment facility according to claim 1 or 2, characterized in that: the lower portion of the smoke exhaust tower is communicated with the mixing chamber, the smoke inlet pipe III and the hot gas joint are arranged at the left end of the mixing chamber, a fan blade assembly I is vertically arranged in the mixing chamber, a plurality of fan blade assemblies II are horizontally arranged at the lower portion of the smoke exhaust tower, and an open funnel portion is arranged at the upper portion of the smoke exhaust tower.

5. The carbon anode off-gas treatment facility according to claim 1 or 2, wherein: temperature sensors are arranged in the sedimentation tank, the clean water tank, the dedusting and cooling chamber, the desulfurizing tower and the smoke exhaust tower; a liquid level meter is arranged at the lower part of the dedusting and cooling chamber; and the first smoke exhaust pipe, the second smoke exhaust pipe and the funnel part of the smoke exhaust tower are respectively provided with a smoke online detection device.