CN211190596U - Electric dust remover with dropping dust collection - Google Patents
Electric dust remover with dropping dust collection Download PDFInfo
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- CN211190596U CN211190596U CN201921446947.XU CN201921446947U CN211190596U CN 211190596 U CN211190596 U CN 211190596U CN 201921446947 U CN201921446947 U CN 201921446947U CN 211190596 U CN211190596 U CN 211190596U
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Abstract
The utility model provides a dropping liquid collection dirt electrostatic precipitator, which comprises a housing, be equipped with the gas cleaning air flue along the fore-and-aft direction in the casing, be equipped with more than one discharge electrode in the gas cleaning air flue, the top that lies in every discharge electrode rear in the gas cleaning air flue is equipped with the dust-collecting liquid box respectively, be equipped with the multirow forward backward on the bottom plate of dust-collecting liquid box, every row is equipped with a plurality of dust-collecting liquid discharge holes, the internal dust-collecting liquid that can electrically conduct that is equipped with of dust-collecting liquid box, the dust-collecting liquid passes the gas cleaning air flue downwards through the water droplet form that is a mutual separation behind the dust-collecting liquid. 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 dust collecting electrode on the scale deposit lead to wet process electrostatic precipitator's dust collection efficiency to reduce thereupon, gets rid of the tiny dust effect including PM2.5 and is very outstanding, and the electric precipitation performance can remain stable dropping liquid collection dirt electrostatic precipitator for a long time.
Description
Technical Field
The utility model relates to a dropping liquid collection dirt electrostatic precipitator.
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, it is very outstanding to get rid of the tiny dust effect including PM2.5, the dropping liquid dust arrester that the electrostatic precipitator performance can remain stable for a long time.
The utility model discloses a dropping liquid collection electrostatic precipitator, which comprises a housing, a flue gas purification air flue is arranged in the housing along the front-back direction, an air inlet of the flue gas purification air flue is arranged at the front part of the housing, an air outlet of the flue gas purification air flue is arranged at the rear part of the housing, more than one discharge electrode is arranged in the flue gas purification air flue, a dust collection liquid box body is arranged at the top part of the flue gas purification air flue, a plurality of rows of dust collection liquid discharge holes are arranged at each row from front to back on a bottom plate of the dust collection liquid box body, conductive dust collection liquid is filled in the dust collection liquid box body, the dust collection liquid passes through the flue gas purification air flue downwards in a water droplet shape separated from each other after flowing out of the dust collection liquid box body through the dust collection liquid discharge holes, a liquid droplet collection area is respectively formed at the rear part of each discharge electrode, a liquid droplet collection groove for collecting the falling, the lower part of the liquid collecting tank is provided with a liquid outlet;
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.
The utility model discloses a dropping liquid collection dirt electrostatic precipitator, wherein the collection dirt liquid discharge hole links to each other with the top entry of dropping liquid pipe, and the dropping liquid pipe sets up along vertical direction, and the liquid outlet of dropping liquid pipe is towards below.
The utility model discloses a dropping liquid collection dirt electrostatic precipitator, wherein discharge electrode is connected with high voltage power supply's negative pole or anodal electricity, the collection dirt liquid that is equipped with in the collection dirt liquid box is connected with high voltage power supply's another electrode electricity, and the top of collection dirt liquid box is equipped with the top cap, and the top cap adopts insulating material to make.
The utility model relates to a liquid dropping and dust collecting electric dust remover, wherein a liquid level meter is arranged on a dust collecting liquid box body, a liquid supplementing box is arranged near the dust collecting liquid box body, dust collecting liquid is stored in the liquid supplementing box, a liquid outlet of the liquid supplementing box is communicated with a liquid supplementing pipe which is connected with a liquid supplementing pump in series, a liquid outlet of the liquid supplementing pipe is positioned above a liquid inlet of the dust collecting liquid box body, when the liquid level meter arranged on the dust collecting liquid box body detects that the liquid level in the dust collecting liquid box body is lower than a set value, the liquid level meter can send out an electric signal, the fluid infusion pump is started through the electric control device, the dust collecting fluid stored in the fluid infusion box is conveyed into the dust collecting fluid box body through a pipeline, when the liquid level meter arranged on the dust collecting liquid box body detects that the liquid level in the dust collecting liquid box body reaches a set value, the liquid level meter can send out an electric signal, the fluid infusion pump is closed through the electric control device, and dust collecting fluid stored in the fluid infusion box is not conveyed into the dust collecting fluid box body through a pipeline.
The utility model discloses a dropping liquid collection dirt electrostatic precipitator, wherein the upper portion of collecting tank 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 of collecting tank communicates with each other with sewage treatment plant through the fluid-discharge tube that has electronic stop of establishing ties.
The utility model discloses a dropping liquid collection dirt electrostatic precipitator, wherein from preceding back be equipped with 2-15 discharge electrode in the gas cleaning air flue, every is arranged about on the bottom plate of collection dirt liquid box and is controlled the distance between the adjacent collection dirt liquid discharge hole and be 10 mm-80 mm, and the distance between the adjacent two rows of collection dirt liquid discharge holes around on the bottom plate of collection dirt liquid box is 10 mm-100 mm, and the row number of collection dirt liquid discharge hole is 5-100 on the bottom plate of collection dirt liquid box, and the distance between the collection dirt liquid of upper and lower adjacent water droplet form is 1.0 mm-20 mm.
The utility model discloses a dropping liquid collection dirt electrostatic precipitator, wherein from preceding rear 5-12 discharge electrode that are equipped with in the gas cleaning air flue, every row of distance between the adjacent collection dirt liquid discharge hole of controlling on the bottom plate of collection dirt liquid box is 20 mm-50 mm, and the distance between the adjacent two rows of collection dirt liquid discharge holes around on the bottom plate of collection dirt liquid box is 20 mm-60 mm, and the row number of collection dirt liquid discharge hole is 10-60 on the bottom plate of collection dirt liquid box, and the distance between the collection dirt liquid of upper and lower adjacent water droplet form is 2.0 mm-6 mm.
The utility model discloses a dropping liquid collection dirt electrostatic precipitator, wherein the rear that lies in the dust-collecting liquid box in the gas cleaning 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 gas cleaning air flue, and the top of dust collecting plate is equipped with the dust collecting plate shower along the cross-sectional direction of gas cleaning air flue, and the dust collecting plate shower has circulating water pump's pipeline to link to each other with alkaline water solution water storage tank or alkaline water solution cistern through establishing ties, and the delivery port of dust collecting plate shower is towards the dust.
The utility model discloses a dropping liquid collection dirt electrostatic precipitator, wherein the rear of dust collecting plate is equipped with second discharge electrode along the cross-sectional direction of gas cleaning air flue, and second discharge electrode is connected with the discharge electrode electricity, the rear that lies in 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 the face of a plurality of back dust collecting plates is located vertical direction in the front and back, and the top of every back dust collecting plate is equipped with back shower along the front and back direction, and the delivery port orientation of back shower corresponds back dust collecting plate, and every back dust collecting plate is respectively through conductor ground connection.
Compare with current wet process electrostatic precipitator, the utility model discloses a dropping liquid collection dirt electrostatic precipitator is owing to not let the flue gas blow through layer upon layer cascade, but let the dust collection liquid as collection dirt electrode be the liquid drop collection dirt district that the free falling form passed in the gas cleaning air flue under the action of gravity, and the dust collection 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 the dust collection liquid have the surface that exposes that has more, with area of contact between increase dust collection 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 a 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 of every conducting rod end 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 the dropping liquid collection dirt electrostatic precipitator removes dust, let the exhaust hole spray the air of coming along air supply channel around the discharge needle in succession, the air that erupts forms the scale deposit fluid curtain of keeping apart the dusty smoke body on the surface of discharge needle or around it, thereby can avoid the very easy collection dirt needle position of the discharge electrode of current, 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 dropping liquid collection dirt electrostatic precipitator 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 dropping liquid collection dirt electrostatic precipitator 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 very easy scale deposit on the collection dirt electrode to lead to wet process electrostatic precipitator's dust collection efficiency obviously to reduce thereupon, and the unit interval in-process tolerance 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 dropping dust collecting 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 structure of the electrostatic precipitator for liquid dropping dust collection 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 an enlarged partial cross-sectional view of the dust collection liquid tank portion;
fig. 5 is an enlarged top view of the bottom portion of the dust collecting liquid tank body.
Detailed Description
As shown in fig. 1, fig. 2, fig. 4 and fig. 5, the dropping dust collecting electric dust remover of the present invention comprises a casing 1, a flue gas purifying air passage 2 is arranged in the casing 1 along the front-back direction, an air inlet 17 of the flue gas purifying air passage 2 is arranged in the front of the casing 1, an air outlet 18 of the flue gas purifying air passage 2 is arranged in the rear of the casing 1, more than one discharge electrode is arranged in the flue gas purifying air passage 2, a dust collecting liquid box 3 is arranged at the top of the flue gas purifying air passage 2 behind the discharge electrode, a plurality of rows of dust collecting liquid discharging holes 5 are arranged on the bottom plate of the dust collecting liquid box 3 from front to back, each row is provided with a plurality of dust collecting liquid discharging holes 5, conductive dust collecting liquid 6 is arranged in the dust collecting liquid box 3, 20000-60000 volt potential difference is generated between the discharge electrode and the dust collecting liquid 6 by connecting a high voltage direct current power supply, the dust collecting liquid 6 flows out of the dust collecting liquid, a liquid drop dust collecting area 21 is formed behind each discharge electrode, a liquid collecting tank 4 for collecting falling dust collecting liquid 6 is arranged at the lower part of the liquid drop dust collecting area 21 in the flue gas purification air flue 2, and a liquid discharge port 25 is arranged at 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, calculated from the air inlet 17 end of the flue gas purification flue 2, the axes of the plurality of conductive rods 7 of the 1 st discharge electrode may be located in the vertical direction, the outer surface of the conductive rods 7 is plated or brushed with a metal anti-corrosion coating, an air delivery channel 8 is axially arranged in the conductive rods 7, the plurality of conductive rods 7 are arranged side by side in the flue gas purification flue 2 along the left-right direction, the sidewall of each conductive rod 7 is provided with a plurality of exhaust holes 9, the inner end of each exhaust hole 9 is respectively communicated with the air delivery channel 8, the middle part of each exhaust hole 9 is radially provided with a conductive rod 10, two ends of each conductive rod 10 are respectively fixedly connected with the wall of the conductive rod 7, the middle part of each conductive rod 10 is respectively fixedly connected with the inner end of a discharge needle 11, during the dust removal process of the liquid drop dust collector, the air exhaust holes 9 continuously spray the air conveyed along the air conveying channel 8 towards the periphery of the discharge needles 11, and the sprayed air forms a fluid curtain for isolating the dust-containing smoke bodies on the surface of the discharge needles 11 or the periphery of the discharge needles 11;
if there is a second, 3 rd discharge electrode, the conducting rods 7 of the latter discharge electrode should be kept at a distance from the former droplet collecting area 21, so that the dust collecting liquid 6 dropped in the droplet collecting area 21 does not fall on the conducting rods 7 of the latter discharge electrode. Therefore, the conducting rods 7 of the rear discharge electrode can be inclined at a certain angle along the front-rear vertical direction, that is, the top ends of the conducting rods 7 are inclined forward and the bottom ends are inclined backward in the flue gas cleaning air channel 2, so as to avoid the falling trajectory of the dust collecting liquid 6 which falls obliquely backward.
Let contain nitrogen oxide, sulfur dioxide, the flue gas of sulfur trioxide and dust gets into dropping liquid collection dirt electrostatic precipitator's gas cleaning air flue 2, and 2 gas cleaning air flues along dropping liquid collection dirt electrostatic precipitator get into the liquid drop collection dirt district, dust in the flue gas can be in the state of charge when the discharge electrode through dropping liquid collection dirt electrostatic precipitator, let the dust that is in the state of charge pass liquid drop collection dirt district 21, in this in-process, be in the state of charge dust in the flue gas and can be caught by the collecting solution 6 in liquid drop collection dirt district 21, nitrogen oxide in the flue gas, sulfur dioxide and sulfur trioxide also have partly to be caught by the collecting solution 6 in liquid drop collection dirt district 21.
The utility model discloses a dropping liquid collection dirt electrostatic precipitator's dust removal mechanism is slightly different with current wet process electrostatic precipitator, and its difference is exactly that the 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 under ungrounded or do not throw out DC power supply electrode's state, catch dust and nitrogen oxide, sulfur dioxide and sulfur trioxide in the flue gas under unsettled state promptly.
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 suspended state is much larger, and the charged electric quantity (or chargeable electric quantity) of the raindrop-shaped dust collecting liquid 6 is much larger than that of the charged dust around the raindrop-shaped dust collecting liquid 6, so that a certain suspended state of the raindrop-shaped dust collecting liquid 6 can be regarded as a liquid conductor with a large volume, and the liquid conductor can absorb a lot of 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 have charges with the electric 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 dropping liquid collection dirt electrostatic precipitator is owing to not let the flue gas blow through layer upon layer water curtain, but let the collection dirt liquid 6 as an album dirt electrode be the liquid drop collection dirt district 21 in the free falling form passes the flue gas purification air flue under the action of gravity, and collection dirt 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 collection dirt liquid 6 have the surface that exposes that has more, area of contact between with 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 each conducting rod 7, the inner end of each exhaust hole 9 communicates with each other 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 each conducting rod 10 is fixed with the wall of conducting rod 7 and is linked to each other, the middle part of each 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 dropping liquid dust collector removing dust, 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, 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 dropping liquid collection dirt electrostatic precipitator 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 is corroded 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 discharging hole 5 is connected to the top inlet of the dropping liquid pipe 15, the dropping liquid pipe 15 is arranged along the vertical direction, the liquid outlet of the dropping liquid pipe 15 faces downward, and the dust collecting liquid 6 is an aqueous solution containing ammonia or an aqueous solution containing sodium carbonate or an aqueous solution containing calcium hydroxide.
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, the dust collecting liquid 6 contained in the dust collecting liquid tank 3 is electrically connected to another electrode of the high voltage power supply, the top of the dust collecting liquid tank 3 is provided with the top cover 14, and the top cover 14 is made of an insulating material.
As a further improvement of the utility model, a liquid level meter (not shown in the figure) is arranged on the dust collection liquid box body 3, a liquid supplementing box (not shown in the figure) is arranged near the dust collection liquid box body 3, dust collection 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 (not shown in the figure) in series, a liquid outlet of the liquid supplementing pipe 13 is positioned above a liquid inlet 26 of the dust collection liquid box body 3, when the liquid level meter arranged on the dust collection liquid box body 3 detects that the liquid level in the dust collection liquid box body 3 is lower than a set value, the liquid level meter can send an electric signal, the liquid supplementing pump is started through an electric control device, the dust collection liquid 6 stored in the liquid supplementing box is conveyed into the dust collection liquid box body 3 through a pipeline, when the liquid level meter arranged on the dust collection liquid box body 3 detects that the liquid level in the dust collection liquid box body 3 reaches the set value, the liquid level meter can, the dust collecting liquid 6 stored in the liquid supplementing box is not conveyed into the dust collecting liquid box body 3 through a pipeline.
As a further improvement of the utility model, the upper part of the liquid collecting tank 4 is provided with an overflow port which is communicated with the sewage treatment device through an overflow pipe 22, and a liquid discharge port 25 of the liquid collecting tank 4 is communicated with the sewage treatment device through a liquid discharge pipe 24 which is connected with an electric valve (not shown in the figure) in series.
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 adjacent left and right dust collecting liquid discharge holes 5 on the bottom plate of the dust collecting liquid tank 3 is 10mm to 80mm, the distance between the adjacent two rows of dust collecting liquid discharge holes 5 on the bottom plate of the dust collecting liquid tank 3 is 10mm to 100mm, the number of rows of the dust collecting liquid discharge holes 5 on the bottom plate of the dust collecting liquid tank 3 is 5 to 100, and the distance between the upper and lower adjacent water drop-shaped dust collecting liquid 6 is 1.0mm to 20 mm.
As a further improvement of the present invention, 5 or 6 or 8 or 10 or 12 discharge electrodes are provided in the flue gas cleaning air passage 2 from front to back, the distance between the adjacent left and right dust collecting liquid discharge holes 5 on the bottom plate of the dust collecting liquid tank 3 is 20mm to 50mm, the distance between the adjacent two rows of dust collecting liquid discharge holes 5 on the bottom plate of the dust collecting liquid tank 3 is 20mm to 60mm, the row number of the dust collecting liquid discharge holes 5 on the bottom plate of the dust collecting liquid tank 3 is 10 to 60, and the distance between the upper and lower adjacent water drop-shaped dust collecting liquid 6 is 2.0mm to 6 mm.
As a further improvement, the rear that lies in dust-collecting liquid box 3 in above-mentioned flue gas cleaning air flue 2 is equipped with the 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, the face of dust collecting plate 12 sets up along flue gas cleaning air flue 2's cross-sectional direction, the top of dust collecting plate 12 is equipped with dust collecting plate shower 16 along flue gas cleaning air flue 2's cross-sectional direction, dust collecting plate shower 16 has circulating water pump (not drawn in the picture)'s pipeline and alkaline water solution catch basin or alkaline water solution cistern to link to each other through 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 dropping liquid collection dirt electrostatic precipitator 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 (9)
1. Dropping liquid collection dirt electrostatic precipitator, its 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, an air inlet (17) of the flue gas purification air passage (2) is formed in the front part of the machine shell (1), an air outlet (18) of the flue gas purification air passage (2) is formed in the rear part of the machine shell (1), more than one discharge electrode is arranged in the flue gas purification air passage (2), a dust collection liquid box body (3) is arranged at the top behind the discharge electrode in the flue gas purification air passage (2), a plurality of rows of dust collection liquid discharge holes (5) are formed in the bottom plate of the dust collection liquid box body (3) from front to back, each row of dust collection liquid discharge holes is formed, a liquid collection groove (4) for collecting falling dust collection liquid (6) is formed in the lower part of a liquid drop dust collection area in the;
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 drop collection electric precipitator of claim 1, wherein: the dust collecting liquid discharging hole (5) is connected with the top end inlet of the liquid dropping pipe (15), the liquid dropping pipe (15) is arranged along the vertical direction, and the liquid outlet of the liquid dropping pipe (15) faces downwards.
3. The drop collection electric precipitator of claim 2, wherein: the discharge electrode is electrically connected with the negative electrode or the positive electrode of the high-voltage power supply, dust collection liquid (6) contained in the dust collection liquid box body (3) is electrically connected with the other electrode of the high-voltage power supply, a top cover (14) is arranged at the top of the dust collection liquid box body (3), and the top cover (14) is made of an insulating material.
4. The drop collection electric precipitator of claim 3, wherein: the dust collection liquid box is characterized in that a liquid level meter is arranged on the dust collection liquid box body (3), a liquid supplementing box is arranged near the dust collection liquid box body (3), dust collection 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 a liquid inlet (26) of the dust collection liquid box body (3).
5. The drop collection electric precipitator of claim 4, 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.
6. The drop collection electric precipitator of claim 5, wherein: the flue gas purification air flue (2) is internally provided with 2-15 discharge electrodes from front to back, the distance between every two adjacent left and right dust collecting liquid discharge holes (5) on the bottom plate of the dust collecting liquid box body (3) is 10-80 mm, the distance between every two adjacent front and back dust collecting liquid discharge holes (5) on the bottom plate of the dust collecting liquid box body (3) is 10-100 mm, the row number of the dust collecting liquid discharge holes (5) on the bottom plate of the dust collecting liquid box body (3) is 5-100, and the distance between the up-and-down adjacent water drop-shaped dust collecting liquid (6) is 1.0-20 mm.
7. The drop collection electric precipitator of claim 6, wherein: the flue gas purification air flue (2) is internally provided with 5-12 discharge electrodes from front to back, the distance between every two adjacent left and right dust collecting liquid discharge holes (5) on the bottom plate of the dust collecting liquid box body (3) is 20-50 mm, the distance between every two adjacent front and back dust collecting liquid discharge holes (5) on the bottom plate of the dust collecting liquid box body (3) is 20-60 mm, the row number of the dust collecting liquid discharge holes (5) on the bottom plate of the dust collecting liquid box body (3) is 10-60, and the distance between the up-and-down adjacent water-drop-shaped dust collecting liquid (6) is 2.0-6 mm.
8. The drop collecting electric dust remover as claimed in any one of claims 1 to 7, wherein: the rear that lies in dust-collecting liquid box (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).
9. The drop collection electric precipitator of claim 8, 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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| CN201921446947.XU CN211190596U (en) | 2019-09-02 | 2019-09-02 | Electric dust remover with dropping dust collection |
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| CN201921446947.XU CN211190596U (en) | 2019-09-02 | 2019-09-02 | Electric dust remover with dropping dust collection |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110404682A (en) * | 2019-09-02 | 2019-11-05 | 宁夏马连富电力科技有限公司 | Dropping liquid dust electric precipitator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110404682A (en) * | 2019-09-02 | 2019-11-05 | 宁夏马连富电力科技有限公司 | Dropping liquid dust electric precipitator |
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Effective date of registration: 20220119 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. |