CN211190597U - Full liquid state dust collecting electrode dust collector - Google Patents
Full liquid state dust collecting electrode dust collector Download PDFInfo
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- CN211190597U CN211190597U CN201921450132.9U CN201921450132U CN211190597U CN 211190597 U CN211190597 U CN 211190597U CN 201921450132 U CN201921450132 U CN 201921450132U CN 211190597 U CN211190597 U CN 211190597U
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Abstract
The utility model provides a full liquid dust collection utmost point electric dust remover, which comprises a housing, be equipped with the gas cleaning air flue along the fore-and-aft direction in the casing, the front portion of casing is equipped with the air inlet of gas cleaning air flue, be equipped with more than one discharge electrode in the gas cleaning air flue, the lower part that lies in every discharge electrode rear in the gas cleaning air flue is equipped with many rows of dust-collecting liquid injection pipes from preceding backward, the upper portion of dust-collecting liquid injection pipe lateral wall is equipped with a plurality of dust-collecting liquid discharge holes, the dust-collecting liquid discharge hole of dust-collecting liquid injection pipe can upwards spray dust-collecting liquid, dust-collecting liquid is the. Its aim at provides one kind and avoids discharge electrode's discharge needle position to be corroded by nitrogen oxide, sulfur dioxide and sulfur trioxide, avoids wet process electrostatic precipitator discharge needle position collection dirt scale deposit and the problem that scale deposit leads to wet process electrostatic precipitator's dust collection efficiency obviously to reduce thereupon on the dust collecting electrode, gets rid of the tiny dust effect including PM2.5 and is very outstanding, and the electric precipitation performance can remain stable full liquid state collection dirt electric dust remover for a long time.
Description
Technical Field
The utility model relates to a full liquid state collection dirt utmost point electric dust remover.
Background
The flue gas of a coal-fired boiler contains a large amount of nitrogen oxides, sulfur dioxide, sulfur trioxide and fine dust including PM2.5, and if directly discharged, the surrounding environment is seriously polluted, and for this reason, the flue gas needs to be treated. The existing method for removing nitrogen oxides, sulfur dioxide, sulfur trioxide and fine dust including PM2.5 in flue gas is respectively carried out, usually 3-5 groups of electric dust collectors are connected in series for dust removal matched with a power plant boiler, and a special desulfurization and denitration device is adopted for desulfurization and denitration, but for various reasons, the existing electric dust collectors cannot meet the design requirement for removing very fine dust in large-flow gas, the dust amount in the discharged flue gas is generally more than 70 mg/cubic meter, most of the discharged dust belongs to particulate matters capable of entering the lung, the content of residual nitrogen oxides, sulfur dioxide and sulfur trioxide in the treated discharged flue gas is still high, and a large number of power generation boilers in China cannot meet the new environment-friendly standard for discharging flue gas of the power plant boiler.
In addition, the electric dust collector in the place such as the electric dust collector for boiler flue gas of a power plant generally needs to continuously operate for more than one year, and the electric dust collector cannot be stopped in midway, but the electric dust collector has the problem of dust collection efficiency reduction and the like due to various reasons in the operation process, the electric dust collector cannot be stopped in time for maintenance, and only the electric dust collector can be operated with diseases, and the situation is very common in practice, which is also the root cause that the electric dust collector in many places only has extremely high dust collection efficiency in the dust collection efficiency detection prepared in advance, and the dust collection efficiency is not ideal in most other times.
There are many reasons for influencing the stability of the dust removal efficiency of the electric dust remover, and the following focuses on the problems of the wet-process electric dust remover.
The wet electrostatic precipitator washes the electrode by adopting the scouring liquid, so that the dust is in a slurry state and is washed away from the electrode, and therefore, the wet electrostatic precipitator has the following advantages compared with the dry electrostatic precipitator:
1. the wet electric dust remover has no secondary dust raising caused by vibration and airflow dust blowing during dust removal of the dry electric dust remover, and the dust removal performance of the dust remover can be kept stable;
2. moving parts such as mechanical parts for vibration and beating are not used, so that the running reliability of the equipment can be improved, and mechanical faults are not easy to occur;
3. has good effect of removing various dusts, has strong adaptability to the dusts, is not influenced by the physical and chemical properties of the dusts, such as resistance, flammability and the like,
4. the submicron dust particles can be effectively captured;
5. can absorb pollutants such as sulfur trioxide, sulfur dioxide and the like in the delayed period.
However, the existing wet-process electric dust collector also has several defects that seriously affect the popularization and use thereof, including:
1. the discharge needle position of the discharge electrode of the wet electrostatic precipitator is easy to collect dust and scale, and is easy to corrode by nitrogen oxide, sulfur dioxide and sulfur trioxide, once the discharge needle of the discharge electrode collects dust and scale or is corroded, the dust removal efficiency of the wet electrostatic precipitator can be rapidly reduced, and if the technology capable of resisting corrosion of nitrogen oxide, sulfur dioxide and sulfur trioxide is adopted to deal with the dust and scale, the manufacturing cost of equipment is very high.
2. The dust collecting electrode of the wet electric dust remover is easy to scale, and is difficult to deal with the scale, and along with the appearance of a large amount of scales, the dust removing efficiency of the wet electric dust remover is obviously reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can avoid discharge electrode's discharge needle position to be corroded by nitrogen oxide, sulfur dioxide and sulfur trioxide, avoid wet process electrostatic precipitator discharge needle position collection dirt scale deposit and collect dirt go up very easy scale deposit and lead to wet process electrostatic precipitator's dust collection efficiency obviously to reduce thereupon, the unit interval in-process tolerance is big, get rid of tiny dust effect including PM2.5 very outstanding, the electric precipitation performance can remain stable full liquid state collection dirt electrode electrostatic precipitator for a long time.
The utility model discloses a full liquid state dust collection electrode electric dust remover, which comprises a housing, be equipped with the gas cleaning air flue along the fore-and-aft direction in the casing, the front portion of casing is equipped with the air inlet of gas cleaning air flue, the rear portion of casing is equipped with the gas vent of gas cleaning air flue, be equipped with more than one discharge electrode in the gas cleaning air flue, the rear that lies in every discharge electrode in the gas cleaning air flue is equipped with the multiple row dust-collecting liquid injection pipe, the upper portion of dust-collecting liquid injection pipe lateral wall is equipped with a plurality of dust-collecting liquid discharge holes, the dust-collecting liquid discharge hole of dust-collecting liquid injection pipe can upwards spray dust-collecting liquid, the lower part of the liquid droplet dust-collecting area in the gas cleaning air flue is equipped with the collecting tank that is;
the discharge electrode comprises a plurality of conducting rods, an air conveying channel is arranged in each conducting rod along the axial direction, the conducting rods are arranged in the flue gas purification air channel in parallel along the left-right direction, a plurality of exhaust holes are formed in the side wall of each conducting rod, the inner end of each exhaust hole is communicated with the air conveying channel, a conducting rod is arranged in the middle of each exhaust hole along the radial direction, two ends of each conducting rod are fixedly connected with the wall of each conducting rod respectively, and the middle of each conducting rod is fixedly connected with the inner end of a discharge needle respectively.
Preferably, the discharge electrode is electrically connected to a negative electrode or a positive electrode of a high voltage power supply, and the dust collecting liquid contained in the dust collecting liquid injection pipe is electrically connected to the other electrode of the high voltage power supply.
Preferably, the dust collecting liquid injection pipe is communicated with the lower part of the dust collecting liquid storage box through a pipeline which is connected in series with an infusion pump, the dust collecting liquid storage box is arranged at the top of the casing, a top cover is arranged at the top of the dust collecting liquid storage box, the top cover is made of an insulating material, dust collecting liquid is stored in the dust collecting liquid storage box, a liquid level meter is arranged on the dust collecting liquid storage box, a liquid supplementing box is arranged near the dust collecting liquid storage box, the dust collecting liquid is stored in the liquid supplementing box, the liquid outlet of the liquid supplementing box is communicated with a liquid supplementing pipe which is connected in series with a liquid supplementing pump, and the liquid outlet of the.
Preferably, the upper part of the liquid collecting tank is provided with an overflow port, the overflow port is communicated with the sewage treatment device through an overflow pipe, and the liquid discharge port of the liquid collecting tank is communicated with the sewage treatment device through a liquid discharge pipe which is connected with an electric stop valve in series.
Preferably, 2-15 discharge electrodes are arranged in the flue gas purification air flue from front to back, a plurality of rows of dust collecting liquid injection pipes are arranged on the lower portion, located behind each discharge electrode, in the flue gas purification air flue along the left-right horizontal direction, the distance between the left-right adjacent dust collecting liquid discharge holes in each dust collecting liquid injection pipe is 10-80 mm, the distance between the front-back adjacent dust collecting liquid injection pipes is 50-150 mm, and the number of the dust collecting liquid injection pipes is 4-100.
Preferably, 5-12 discharge electrodes are arranged in the flue gas purification air flue from front to back, the distance between the left and right adjacent dust collecting liquid discharge holes on the dust collecting liquid injection pipe is 20-60 mm, the distance between the front and back adjacent dust collecting liquid injection pipes is 80-100 mm, and the number of the dust collecting liquid injection pipes is 12-60.
Preferably, the rear that lies in the dust-collecting liquid injection pipe in the flue gas purification air flue is equipped with the dust collecting plate that the face can pass the air current, and the dust collecting plate adopts foamed metal board or wire mesh to make, and the face of dust collecting plate sets up along the cross-sectional direction of flue gas purification air flue, and the top of dust collecting plate is equipped with the dust collecting plate shower along the cross-sectional direction of flue gas purification air flue, and the dust collecting plate shower links to each other with alkaline water solution water storage tank or alkaline water solution cistern through the pipeline that has circulating water pump in series, and the delivery port of dust collecting plate shower faces the dust collecting plate.
Preferably, the rear of dust collecting plate is equipped with the second discharge electrode along the cross-sectional direction of gas cleaning air flue, and the second discharge electrode is connected with the discharge electrode electricity, the rear that lies in the second discharge electrode in the gas cleaning air flue is equipped with a plurality of back dust collecting plates side by side, and back dust collecting plate adopts foamed metal material to make, and vertical direction around the face of a plurality of back dust collecting plates is located, and the top of every back dust collecting plate is equipped with the back shower along the back direction, and the delivery port orientation of back shower corresponds back dust collecting plate, and every back dust collecting plate is through conductor ground connection respectively.
Compare with current wet process electrostatic precipitator, the utility model discloses a full liquid state collection dirt utmost point electrostatic precipitator is owing to not let the flue gas blow through layer upon layer cascade, but let the liquid drop collection dirt district in the dust collecting liquid that is as collection dirt electrode directly passes the gas cleaning air flue, and the dust collecting liquid is that the raindrop form passes the flue gas downwards in order to catch dust and nitrogen oxide wherein, sulfur dioxide and sulfur trioxide, let collection dirt liquid have the surface that exposes that has more, with area of contact between increase collection dirt liquid and the flue gas, so it can have higher probability contact and catch dust and nitrogen oxide in the flue gas, sulfur dioxide and sulfur trioxide so its windage is less relatively, the order the utility model discloses dust and nitrogen oxide in the catch flue gas, sulfur dioxide and sulfur trioxide's efficiency is higher on the contrary. Because the dust collecting electrode made of metal materials is not arranged, the problem that the dust collecting electrode of the existing wet electric dust collector is easy to scale is thoroughly solved, and the technical problem that the popularization and the use of the existing wet electric dust collector are seriously influenced due to the fact that the dust removing efficiency of the wet electric dust collector is obviously reduced along with the appearance of a large amount of scales is avoided. Furthermore, the utility model discloses an outer surface cladding of conducting rod has anticorrosive coating, be equipped with air supply channel along the axial in the conducting rod, a plurality of conducting rods set up side by side along left right direction in the flue gas purification air flue, be equipped with a plurality of exhaust holes on the lateral wall of every conducting rod, the inner end in every exhaust hole communicates with each other with air supply channel respectively, the middle part in exhaust hole radially is equipped with a conducting rod, two ends difference end of every conducting rod links to each other with the wall of conducting rod is fixed, the middle part of every conducting rod links to each other with the inner end stationary phase of a discharge needle respectively, in the in-process that full liquid state dust collecting electrode dust remover removes dust, let the exhaust hole spray the air of coming along air supply channel around the discharge needle in succession, the air that jets forms the fluid curtain of keeping apart the dust-laden smoke body on the surface of discharge needle or around it, thereby can avoid the very easy scale deposit of the dust collecting needle position of the discharge electrode of, And be corroded problem by nitrogen oxide, sulfur dioxide and sulfur trioxide very easily, because the utility model discloses a discharge electrode's discharge needle can not collect dirt scale deposit or corroded, consequently, the utility model discloses a full liquid state collection dirt electric dust remover can not be like wet process electrostatic precipitator, and its dust collection efficiency can descend rapidly because discharge electrode's discharge needle collection dirt scale deposit or corroded after operation a period, the utility model discloses a manufacturing cost is also relatively lower. Therefore, the utility model discloses a full liquid state collection dirt electrode dust remover has the discharge needle position that can avoid discharge electrode and is corroded by nitrogen oxide, sulfur dioxide and sulfur trioxide, avoids wet process electrostatic precipitator discharge needle position collection dirt scale deposit and the collection dirt to go up very easy scale deposit and leads to wet process electrostatic precipitator's dust collection efficiency obviously to reduce thereupon, and the processing tolerance in the unit interval is big, and it is very outstanding to get rid of the tiny dust effect including PM2.5, and the electrostatic precipitator performance can remain stable characteristics for a long time.
The full liquid state dust collecting electrode electric dust collector of the present invention will be further described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a front sectional view of the electric dust collector with liquid dust collector of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is an enlarged partial cross-sectional view of a portion of a discharge needle on a conductive rod;
fig. 4 is a partially enlarged sectional view of a dust collecting liquid injection pipe portion.
Detailed Description
As shown in fig. 1, fig. 2 and fig. 4, the full liquid dust collecting electrode electric dust collector of the present invention comprises a casing 1, a flue gas purification air passage 2 is arranged in the casing 1 along the front-back direction, an air inlet 17 of the flue gas purification air passage 2 is arranged in the front portion of the casing 1, an air outlet 18 of the flue gas purification air passage 2 is arranged in the rear portion of the casing 1, more than one discharge electrode is arranged in the flue gas purification air passage 2, a plurality of rows of dust collecting liquid injection pipes 3 are arranged in the flue gas purification air passage 2 from front to back along the left-right horizontal direction, a plurality of dust collecting liquid discharge holes 5 are arranged on the upper portion of the side wall of the dust collecting liquid injection pipe 3, the dust collecting liquid discharge holes 5 of the dust collecting liquid injection pipe 3 can upwards inject dust collecting liquid 6, the dust collecting liquid 6 is conductive liquid, by connecting a high voltage direct current power supply, a potential difference of 10000-800, the dust collecting liquid 6 is upwards sprayed out of the dust collecting liquid spraying pipe 3 through the dust collecting liquid discharging hole 5, then upwards moves to the position near the top in the flue gas purification air passage 2 along the vertical direction, then drops in a water drop shape separated from each other, a liquid drop dust collecting area 21 is formed behind each discharge electrode, the dust collecting liquid 6 cannot be attached to a solid and downwards flows through the flue gas purification air passage 2, a liquid collecting tank 4 for collecting the dropped dust collecting liquid 6 is arranged at the lower part of the liquid drop dust collecting area in the flue gas purification air passage 2, and a liquid discharging hole 25 is formed in the lower part of the liquid collecting tank 4;
as shown in fig. 1, 2 and 3, the discharge electrode includes a plurality of conductive rods 7, an air conveying channel 8 is axially disposed in the conductive rods 7, the plurality of conductive rods 7 are disposed in parallel in the left-right direction in the flue gas purification flue 2, a plurality of exhaust holes 9 are disposed on the side wall of each conductive rod 7, the inner end of each exhaust hole 9 is respectively communicated with the air conveying channel 8, a conductive rod 10 is radially disposed in the middle of each exhaust hole 9, two ends of each conductive rod 10 are respectively fixedly connected with the wall of the conductive rod 7, the middle of each conductive rod 10 is respectively fixedly connected with the inner end of a discharge needle 11, in the process of dedusting by the full-liquid dust collecting electrode deduster, the air exhaust holes 9 continuously spray air conveyed along the air conveying channel 8 towards the peripheries of the discharge needles 11, and the sprayed air forms a fluid curtain for isolating dust-containing smoke bodies on the surfaces of the discharge needles 11 or the peripheries of the discharge needles 11;
when flue gas containing nitrogen oxide, sulfur dioxide, sulfur trioxide and dust enters the flue gas purification air flue 2 of the full-liquid-state dust collecting electrode electric dust collector and enters the liquid drop dust collecting area 21 along the flue gas purification air flue 2 of the full-liquid-state dust collecting electrode electric dust collector, the dust in the flue gas can be in a charge state when passing through the discharge electrode of the full-liquid-state dust collecting electrode electric dust collector, the dust in the charge state can pass through the liquid drop dust collecting area 21, in the process, the dust in the charge state in the flue gas can be captured by the dust collecting liquid 6 in the liquid drop dust collecting area 21, and the nitrogen oxide, the sulfur dioxide and the sulfur trioxide in the flue gas can also be partially captured by the dust collecting liquid 6 in the liquid drop dust collecting area 21.
The utility model discloses a dust removal mechanism of full liquid state collection dirt utmost point electric dust remover is slightly different with current wet process electrostatic precipitator, and its difference is exactly that dust collection liquid 6 that can electrically conduct does not catch dust and nitrogen oxide, sulfur dioxide and sulfur trioxide in the flue gas under the state of ground connection or connection DC power supply electrode, but can catch dust and nitrogen oxide, sulfur dioxide and sulfur trioxide in the flue gas under the state of ungrounded or not throw out DC power supply electrode promptly under unsettled state.
Compared with the charged dust around the raindrop-shaped dust collecting liquid 6 in the flue gas, the volume of the raindrop-shaped dust collecting liquid 6 in the suspension state is much larger, and the charged electricity quantity or the chargeable electricity quantity of the raindrop-shaped dust collecting liquid 6 is much larger than that of the surrounding charged dust, so that a certain suspended dust collecting liquid 6 can be regarded as a liquid conductor with a large volume, and the liquid conductor can absorb much charged dust around the dust collecting liquid 6 through the action of an electric field in the falling process, and the dust collecting liquid 6 can still carry charges with the polarity opposite to that of the charged dust. Because the staying time in the liquid drop dust collecting area 21 is short, the drop dust collecting liquid 6 is not neutralized and wrapped by a large amount of charged dust to the extent that the charged dust cannot be continuously captured, namely, the dust collecting liquid 6 can capture the charged dust all the time in the dropping process.
The outer surface of the liquid drop of the dust collecting liquid 6 in the suspended state can be in a raindrop shape, compared with the water which is attached to the polar plate and flows down in the same volume, the raindrop-shaped suspended dust collecting liquid 6 has a larger exposed surface, and the contact area between the dust collecting liquid 6 and the flue gas is increased, so that the dust collecting liquid can contact with the flue gas with higher probability and capture dust, nitrogen oxide, sulfur dioxide and sulfur trioxide in the flue gas.
The exposed liquid surface of the raindrop-shaped suspended dust collecting liquid 6 is easier to deform on a micro scale under the action of the electric field attraction of the charged dust, and then the charged dust in the flue gas near each dust collecting liquid 6 can be captured more easily.
Compare with current wet process electrostatic precipitator, the utility model discloses a full liquid state collection dirt utmost point electrostatic precipitator is owing to not let the flue gas blow through layer upon layer water curtain, but let the liquid drop collection dirt district 21 in the dust collecting liquid 6 that is as collection dirt electrode directly passes the gas cleaning air flue, and collecting liquid 6 is that the raindrop form passes the flue gas downwards in order to catch dust and nitrogen oxide wherein, sulfur dioxide and sulfur trioxide, let collecting liquid 6 have the bigger surface that exposes, with area of contact between increase collection dirt liquid 6 and the flue gas, so it can have higher probability contact and catch dust and nitrogen oxide in the flue gas, sulfur dioxide and sulfur trioxide so its windage is less relatively, the order the utility model discloses dust and nitrogen oxide in the catch flue gas, sulfur dioxide and sulfur trioxide's efficiency is higher on the contrary. Because the dust collecting electrode made of metal materials is not arranged, the problem that the dust collecting electrode of the existing wet electric dust collector is easy to scale is thoroughly solved, and the technical problem that the popularization and the use of the existing wet electric dust collector are seriously influenced due to the fact that the dust removing efficiency of the wet electric dust collector is obviously reduced along with the appearance of a large amount of scales is avoided.
In addition, the utility model discloses an outer surface cladding of conducting rod 7 has the anticorrosion coating, be equipped with air supply channel 8 along the axial in the conducting rod 7, a plurality of conducting rods 7 set up side by side along left and right directions in flue gas purification air flue 2, be equipped with a plurality of exhaust holes 9 on the lateral wall of every conducting rod 7, the inner end of every exhaust hole 9 communicates with air supply channel 8 respectively, the middle part of exhaust hole 9 is along radially being equipped with a conducting rod 10, the both ends difference end of every conducting rod 10 is fixed with the wall of conducting rod 7 and is linked to each other, the middle part of every conducting rod 10 is fixed with the inner end of a discharge needle 11 respectively and is linked to each other, in the process of removing dust of full liquid state dust collecting electrode dust remover, let exhaust hole 9 spray the air that comes along air supply channel 8 around discharge needle 11 in succession, the air that erupts forms the fluid curtain of keeping apart the dust-laden smoke body around the surface of, thereby can avoid current wet process electrostatic precipitator's discharge electrode's discharge needle position to collect dirt scale deposit very easily and by the problem of nitrogen oxide, sulfur dioxide and sulfur trioxide corruption very easily, because the utility model discloses a discharge electrode's discharge needle can not collect dirt scale deposit or be corroded, consequently, the utility model discloses a full liquid state collection dirt electrostatic precipitator can not be like wet process electrostatic precipitator, and its dust collection efficiency can be because discharge electrode's discharge needle collection dirt scale deposit or is corroded and descend rapidly after operation a period, the utility model discloses a manufacturing cost is also relatively lower.
As a further improvement of the present invention, the dust collecting liquid 6 is an aqueous solution in which ammonia is dissolved, an aqueous solution in which sodium carbonate is dissolved, or an aqueous solution in which calcium hydroxide is dissolved.
As a further improvement of the present invention, the discharge electrode is electrically connected to the negative electrode or the positive electrode of the high voltage power supply, and the dust collecting liquid 6 contained in the dust collecting liquid ejecting pipe 3 is electrically connected to the other electrode of the high voltage power supply.
As a further improvement of the present invention, the dust collecting liquid injection pipe 3 is connected to the lower portion of the dust collecting liquid storage tank 23 through a pipeline serially connected with an infusion pump, the dust collecting liquid storage tank is disposed on the top of the housing 1, the top of the dust collecting liquid storage tank 23 is provided with a top cap 14, the top cap 14 is made of an insulating material, the dust collecting liquid 6 is stored in the dust collecting liquid storage tank 23, the dust collecting liquid storage tank 23 is provided with a liquid level meter (not shown in the figure), a liquid replenishing tank (not shown in the figure) is disposed near the dust collecting liquid storage tank 23, the dust collecting liquid 6 is stored in the liquid replenishing tank, the liquid outlet of the liquid replenishing tank is communicated with the liquid replenishing pipe 13 serially connected with a liquid replenishing pump (not shown in the figure), the liquid outlet of the liquid replenishing pipe 13 is located above the liquid inlet 26 of the dust collecting liquid storage tank 23, when the liquid level meter disposed on the dust collecting liquid storage tank 23 detects that the, the fluid infusion pump is started through the electric control device, the dust collecting liquid 6 stored in the fluid infusion box is conveyed into the dust collecting liquid storage box 23 through a pipeline, when the liquid level meter arranged on the dust collecting liquid storage box 23 detects that the liquid level in the dust collecting liquid storage box 23 reaches a set value, the liquid level meter can send an electric signal, the fluid infusion pump is closed through the electric control device (not shown in the figure), and the dust collecting liquid 6 stored in the fluid infusion box is not conveyed into the dust collecting liquid storage box 23 through the pipeline any more.
As a further improvement of the utility model, the upper portion of the above-mentioned collecting tank 4 is equipped with the overflow mouth, and the overflow mouth communicates with each other with sewage treatment plant through the overflow pipe, and the leakage fluid dram 25 of collecting tank 4 communicates with each other with sewage treatment plant through the fluid-discharge tube 24 that has electronic stop valve in series connection.
As a further improvement of the present invention, 2 to 15 discharge electrodes are provided in the flue gas cleaning duct 2 from front to back, the distance between the left and right adjacent dust collecting liquid discharge holes 5 on the dust collecting liquid injection pipe 3 is 10mm to 80mm, the distance between the front and back adjacent dust collecting liquid injection pipes 3 is 50mm to 150mm, and the number of the dust collecting liquid injection pipes 3 is 4 to 100.
As a further improvement of the present invention, 5 to 12 discharge electrodes are provided in the flue gas cleaning duct 2 from front to back, the distance between the left and right adjacent dust collecting liquid discharge holes 5 on the dust collecting liquid injection pipe 3 is 20mm to 60mm, the distance between the front and back adjacent dust collecting liquid injection pipes 3 is 80mm to 100mm, and the number of the dust collecting liquid injection pipes 3 is 12 to 60.
As a further improvement, the rear that lies in dust-collecting liquid injection pipe 3 in above-mentioned flue gas cleaning air flue 2 is equipped with dust collecting plate 12 that the face can pass the air current, dust collecting plate 12 adopts foamed metal plate or wire mesh to make, dust collecting plate 12's face sets up along flue gas cleaning air flue 2's cross-sectional direction, dust collecting plate 12's top is equipped with dust collecting plate shower 16 along flue gas cleaning air flue 2's cross-sectional direction, dust collecting plate shower 16 links to each other with alkaline solution water storage tank or alkaline solution cistern through the pipeline that has circulating water pump (not drawn in the picture) of establishing ties, dust collecting plate shower 16's delivery port is towards dust collecting plate 12. The dust collecting plate spray pipes 16 can form an alkaline aqueous solution water curtain or water film on the surface and inside of the dust collecting plate 12, so that the dust collecting plate 12 can efficiently capture nitrogen oxides, sulfur dioxide and sulfur trioxide in the flue gas passing through the dust collecting plate 12; the lower part of the machine shell 1 is provided with a water outlet for discharging alkaline aqueous solution; the alkaline aqueous solution can be recycled.
As a further improvement, the rear of above-mentioned dust collecting plate 12 is equipped with second discharge electrode 19 along the cross-sectional direction of gas cleaning air flue 2, and second discharge electrode 19 is connected with the discharge electrode electricity, the rear that lies in second discharge electrode 19 in gas cleaning air flue 2 is equipped with a plurality of back dust collecting plate 20 side by side, and back dust collecting plate 20 adopts foamed metal material to make, and vertical direction around the face of a plurality of back dust collecting plate 20 is located, and the top of every back dust collecting plate 20 is equipped with the back shower along the fore-and-aft direction, and the delivery port orientation of back shower corresponds back dust collecting plate 20, and every back dust collecting plate 20 is respectively through conductor ground connection. The back shower can make the water curtain or the water film that an alkaline aqueous solution formed on back dust collecting plate 20 surface, lets back dust collecting plate 20 can catch the charged nitrogen oxide in near flue gas, sulfur dioxide and sulfur trioxide, can further improve equipment and get rid of dust, nitrogen oxide, sulfur dioxide and sulfur trioxide's efficiency from this.
The utility model discloses a full liquid state collection dirt electrode dust remover can effectively guarantee that its desulfurization, denitration, dust collection efficiency maintain in national regulation level top, gets rid of nitrogen oxide, sulfur dioxide, sulfur trioxide and tiny dust effect including PM2.5 and is very outstanding, and desulfurization, denitration, dust removal performance are extremely stable to can effectively reduce the windage, reduce the energy consumption.
Claims (8)
1. Full liquid dust arrester electric precipitator which characterized in that: the device comprises a machine shell (1), wherein a flue gas purification air passage (2) is arranged in the machine shell (1) along the front-back direction, the front part of the machine shell (1) is provided with an air inlet (17) of the flue gas purification air passage (2), the rear part of the machine shell (1) is provided with an air outlet (18) of the flue gas purification air passage (2), more than one discharge electrode is arranged in the flue gas purification air passage (2), a plurality of rows of dust collecting liquid injection pipes (3) are arranged behind each discharge electrode in the flue gas purification air passage (2), the upper parts of the side walls of the dust collecting liquid injection pipes (3) are provided with a plurality of dust collecting liquid discharge holes (5), the lower part of a liquid drop dust collecting area in the flue gas purification air passage (2) is provided with a liquid collecting tank (4) for collecting falling dust collecting liquid (6), and;
the discharge electrode comprises a plurality of conducting rods (7), an air conveying channel (8) is arranged in each conducting rod (7) along the axial direction, the conducting rods (7) are arranged in parallel in the flue gas purification air channel (2) along the left and right directions, a plurality of exhaust holes (9) are formed in the side wall of each conducting rod (7), the inner end of each exhaust hole (9) is communicated with the air conveying channel (8) respectively, a conducting rod (10) is arranged in the middle of each exhaust hole (9) along the radial direction, two ends of each conducting rod (10) are fixedly connected with the wall of each conducting rod (7) respectively, and the middle of each conducting rod (10) is fixedly connected with the inner end of a discharge needle (11) respectively.
2. The all-liquid dust collector electrode precipitator of claim 1, wherein: the discharge electrode is electrically connected with the negative electrode or the positive electrode of the high-voltage power supply, and the dust collecting liquid (6) arranged in the dust collecting liquid jet pipe (3) is electrically connected with the other electrode of the high-voltage power supply.
3. The all-liquid dust collector electrode precipitator of claim 2, wherein: the dust collecting liquid injection pipe (3) is communicated with the lower part of a dust collecting liquid storage box (23) through a pipeline which is connected with an infusion pump in series, the dust collecting liquid storage box is arranged at the top of the machine shell (1), a top cover (14) is arranged at the top of the dust collecting liquid storage box (23), the top cover (14) is made of an insulating material, dust collecting liquid (6) is stored in the dust collecting liquid storage box (23), a liquid level meter is arranged on the dust collecting liquid storage box (23), a liquid supplementing box is arranged nearby the dust collecting liquid storage box (23), dust collecting liquid (6) is stored in the liquid supplementing box, a liquid outlet of the liquid supplementing box is communicated with a liquid supplementing pipe (13) which is connected with a liquid supplementing pump in series, and a liquid outlet of the liquid supplementing pipe (13) is positioned above.
4. The all-liquid dust collector electrode precipitator of claim 3, wherein: the upper part of the liquid collecting tank (4) is provided with an overflow port which is communicated with a sewage treatment device through an overflow pipe, and a liquid outlet (25) of the liquid collecting tank (4) is communicated with the sewage treatment device through a liquid outlet pipe (24) which is connected with an electric stop valve in series.
5. The all-liquid dirt collection electrode precipitator of claim 4, wherein: be equipped with 2-15 discharge electrode from preceding backward in gas cleaning air flue (2), the lower part that lies in every discharge electrode rear in gas cleaning air flue (2) is equipped with multi-row dust collection liquid injection pipe (3) along controlling the horizontal direction, the distance between the adjacent dust collection liquid discharge hole (5) is 10 mm-80 mm about on dust collection liquid injection pipe (3), and the distance between the adjacent dust collection liquid injection pipe (3) is 50 mm-150 mm around, and the quantity of dust collection liquid injection pipe (3) is 4-100.
6. The all-liquid dirt collection electrode precipitator of claim 5, wherein: 5-12 discharge electrodes are arranged in the flue gas purification air passage (2) from front to back, the distance between the left and right adjacent dust collecting liquid discharge holes (5) on the dust collecting liquid injection pipe (3) is 20-60 mm, the distance between the front and back adjacent dust collecting liquid injection pipes (3) is 80-100 mm, and the number of the dust collecting liquid injection pipes (3) is 12-60.
7. The all-liquid dust collector electrode precipitator according to any one of claims 1 to 6, wherein: the rear that lies in dust-collecting liquid injection pipe (3) in gas cleaning air flue (2) is equipped with dust collection plate (12) that the face can pass the air current, dust collection plate (12) adopt foam metal sheet or wire mesh to make, the face of dust collection plate (12) sets up along the cross-sectional direction of gas cleaning air flue (2), the top of dust collection plate (12) is equipped with dust collection plate shower (16) along the cross-sectional direction of gas cleaning air flue (2), dust collection plate shower (16) have circulating water pump's pipeline and alkaline aqueous solution water storage tank or alkaline aqueous solution cistern through establishing ties and link to each other, the delivery port of dust collection plate shower (16) is towards dust collection plate (12).
8. The all-liquid dirt collection electrode precipitator of claim 7, wherein: the rear of dust collecting plate (12) is equipped with second discharge electrode (19) along the cross-section direction of gas cleaning air flue (2), and second discharge electrode (19) are connected with the discharge electrode electricity, the rear that lies in second discharge electrode (19) in gas cleaning air flue (2) is equipped with a plurality of back dust collecting plate (20) side by side, and back dust collecting plate (20) adopt foamed metal material to make, and the face of a plurality of back dust collecting plate (20) is located vertical direction in the front and back, and the top of every back dust collecting plate (20) is equipped with back shower along the front and back direction, and the delivery port orientation of back shower pipe is to the back dust collecting plate (20) that correspond, and every back dust collecting plate (20) are through conductor ground connection respectively.
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| CN201921450132.9U CN211190597U (en) | 2019-09-02 | 2019-09-02 | Full liquid state dust collecting electrode dust collector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110420755A (en) * | 2019-09-02 | 2019-11-08 | 宁夏马连富电力科技有限公司 | Full liquid dust arrest pole electric dust-collecting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110420755A (en) * | 2019-09-02 | 2019-11-08 | 宁夏马连富电力科技有限公司 | Full liquid dust arrest pole electric dust-collecting device |
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Effective date of registration: 20220121 Address after: 750004 Complex Building 1, No. 97, Jinrui Road, Jinfeng Industrial Park, economic development zone, Yinchuan City, Ningxia Hui Autonomous Region Patentee after: Ningxia HUANENGDA Environmental Protection Technology Development Co.,Ltd. Address before: 750004 No. 97, Jinrui Road, Jinfeng Industrial Park, economic development zone, Yinchuan City, Ningxia Hui Autonomous Region Patentee before: NINGXIA MALIANFU POWER TECHNOLOGY CO.,LTD. |