CN103721848B - Radial flow type electric precipitator and using method - Google Patents
Radial flow type electric precipitator and using method Download PDFInfo
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- CN103721848B CN103721848B CN201410003538.8A CN201410003538A CN103721848B CN 103721848 B CN103721848 B CN 103721848B CN 201410003538 A CN201410003538 A CN 201410003538A CN 103721848 B CN103721848 B CN 103721848B
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Abstract
A kind of Radial flow type electric precipitator and using method, dedusting air flue is provided with in its casing, radial-flow type electric precipitation electric discharge net is provided with in dedusting air flue, the rear of radial-flow type electric precipitation electric discharge net is provided with the control of dust chain row of annular, the front surface of front loop section of control of dust chain row and the radial-flow type electric precipitation wire side netted that discharges is parallel, by the electrical connection with high-voltage DC power supply, allow radial-flow type electric precipitation discharge to produce between net and collecting electrode web plate the electrical potential difference of more than 20000 volts, the bottom of control of dust chain row is positioned at deashing chamber, deashing chamber is positioned at the below of described dedusting air flue, seal diaphragm is provided with between deashing chamber and dedusting air flue, the vicinity being positioned at control of dust chain row in deashing chamber is provided with blowing pipe in left-right direction.Its object is to provide process in a kind of unit interval large-minded, remove the fine dusts effect comprising PM2.5 very outstanding, dust removal performance is extremely stable, and operating cost is low, the using method of the Radial flow type electric precipitator of long service life.
Description
Technical field
The present invention relates to a kind of Radial flow type electric precipitator and using method.
Background technology
PM2.5 refers to that in air, diameter is less than or equal to the particle of 2.5 microns, also referred to as entering lung particle.Although PM2.5 is the component that in earth atmosphere composition, content is little, it has important impact to air quality and visibility etc.PM2.5 particle diameter is little, is rich in a large amount of poisonous and harmful substances and time of staying is in an atmosphere long, fed distance is far away, thus larger on the impact of health and atmosphere quality.Weather scientist and medical expert think, the harm of the haze weather caused by fine particle to health is even larger than sandstorm.The particle that particle diameter is more than 10 microns, outside the nose that can be blocked in people; The particle of particle diameter between 2.5 microns to 10 microns, can enter the upper respiratory tract, but part excretes by sputum etc., also can be stopped by the fine hair of nasal cavity in addition, relatively little to human health damage; And the fine particle of particle diameter below 2.5 microns, diameter is equivalent to 1/10 size of human hair, is not easily stopped.Directly can enter bronchus after being inhaled into human body, the gas exchanges of interference lung, causes the disease comprising the aspects such as asthma, bronchitis and cardiovascular disease.Everyone on average will suck the air of about 10,000 liters every day, and the micronic dust entering alveolar can be absorbed rapidly, directly enter blood circulation without liver detoxification is distributed to whole body; Secondly, the ability of hemoglobin delivery of oxygen can be damaged, lose blood.Concerning the patient of anaemia and blood circulation disorder, serious consequence may be produced.Such as can increase the weight of respiratory disease, even cause the heart disease such as congestive heart failure and coronary artery.These particles can also enter blood by bronchus and alveolar in a word, and pernicious gas wherein, heavy metal etc. dissolve in blood, larger to the injury of health.The physiological structure of human body determines to PM2.5 without any filtration, obstruction ability, and PM2.5 is to the progress of the harm of human health along with medical technology, progressively exposes the one side of its terror.
Existing electric cleaner, because the distance between positive and negative pole plate is larger, the particle causing diameter in flue gas in power station boiler to be less than or equal to 2.5 microns does not also have enough time to move, be attached on positive and negative pole plate in the gas flow, just by air-flow with have passed through positive and negative pole plate, if reduce the speed of air-flow through battery lead plate, then the treatable throughput of electric cleaner can significantly reduce, and is difficult to meet the processing requirements needed for producing.Therefore, existing electric cleaner cannot meet the designing requirement of removing dust very tiny in large discharge gas, and the Dust Capacity in its flue gas of discharging is generally more than 70 milligrams/cubic metre, and most dust of discharging all belong to can enter lung particle.Traditional electric cleaner is when dedusting supporting to power plant boiler, 3-5 group electric cleaner series connection are normally adopted to use, it is large-minded that it has process in the unit interval, remove the good feature of dust effect of larger particles, but along with country improves constantly the environmental protection standard of the flue gas that power plant discharges, even if take the technical scheme that 3-5 group electric cleaner series connection use, also be difficult to a large amount of this kind of fine dusts of PM2.5 existed in the flue gas by discharge effectively get rid of, due to efficiently PM2.5 cannot be removed, the electricity generation boiler causing China a large amount of is difficult to satisfied new boiler of power plant smoke evacuation environmental protection standard.
Summary of the invention
The object of the present invention is to provide process in a kind of unit interval large-minded, remove the fine dusts effect comprising PM2.5 very outstanding, dust removal performance is extremely stable, and operating cost is low, the Radial flow type electric precipitator of long service life and using method.
Radial flow type electric precipitator of the present invention, comprise casing, dedusting air flue is provided with in casing, radial-flow type electric precipitation electric discharge net is provided with in dedusting air flue, the rear of radial-flow type electric precipitation electric discharge net is provided with the control of dust chain row of annular, the front surface of front loop section of control of dust chain row and the radial-flow type electric precipitation wire side netted that discharges is parallel, by the electrical connection with high-voltage DC power supply, allow radial-flow type electric precipitation discharge to produce between net and collecting electrode web plate the electrical potential difference of more than 20000 volts, the bottom of control of dust chain row is positioned at deashing chamber, deashing chamber is positioned at the below of described dedusting air flue, seal diaphragm is provided with between deashing chamber and dedusting air flue, control of dust chain row is passed down through seal diaphragm and enters deashing chamber, the vicinity being positioned at described control of dust chain row in deashing chamber is provided with blowing pipe in left-right direction, blowing pipe comprises the more than one playpipe arranged in left-right direction, each playpipe respectively by conduit with compressed-air actuated source of the gas can be provided and/or the vapour source of steam can be provided to be connected, conduit is in series with magnetic valve or electronic pipe valve, the front end of each described playpipe is respectively equipped with multiple nozzle,
The collecting electrode web plate that multiple plate mask has the air-vent by air-flow is drawn together in the package of described control of dust chain, the front end face of nozzle and the distance between the described collecting electrode web plate in its dead ahead are 5-100mm, collecting electrode web plate adopts porous foam metal plate or multiple corrugated plating arranged side by side or multiple flat board arranged side by side or cellular board or the superposition of multiple silk screen to make, multiple collecting electrode web plate mutually splices and is arranged in annular, be hinged between adjacent collecting electrode web plate connected, the top loop of described control of dust chain row is arranged around chain row driving shaft, the axis of chain row driving shaft is arranged along left and right horizontal direction, chain row driving shaft can be installed on the housing rotationally, chain row driving shaft is connected with drive motors transmission by speed changer, speed changer is installed on the housing, described chain row driving shaft is set with chain row driving wheel, chain row driving wheel can drive described control of dust chain to arrange and rotate.
Radial flow type electric precipitator of the present invention, wherein said conduit is in series with the heater for heated compressed air, the front end face of whole described nozzle is positioned on same vertical plane, the front end face of each nozzle is respectively equipped with and sprays seam, each injection seam is extended in left-right direction respectively, the front end face of nozzle and the distance between the described collecting electrode web plate in its dead ahead are 10-50mm, the described left end spraying seam extends to the edge of spray nozzle front end left side of face, and the right-hand member spraying seam extends to the edge of spray nozzle front end right side of face; Each described collecting electrode web plate comprises the porous foam metal plate that multiple plate face is positioned at left and right vertical direction, the side of adjacent porous foam metal plate is affixed each other, multiple porous foam metal plate is spliced into the collecting electrode web plate that plate mask has the air-vent by air-flow, the rear of collecting electrode web plate is provided with installing rack, collecting electrode web plate is fixed on installing rack, is hinged connected between adjacent collecting electrode web plate by installing rack; The bulk density of described porous foam metal plate is 0.15-2g/cm
3, the specific area of porous foam metal plate is 7.8 × 10
2-1.5 × 10
8m
2/ m
3, the thickness of porous foam metal plate is 3-60mm, and on per inch porous foam metal plate, the number PPI in hole is 5-110.
Radial flow type electric precipitator of the present invention, the quantity of wherein said playpipe is 2-30, each playpipe is respectively equipped with 2-30 described nozzles, the middle part of each playpipe rear end is respectively equipped with fluid inlet, the fluid inlet of each playpipe is connected with the fluid issuing of a described conduit respectively, and described heater is steam air heater or electric airheater; The bulk density of described porous foam metal plate is 0.35-1.5g/cm
3, the specific area of porous foam metal plate is 7.8 × 10
3-1.5 × 10
7m
2/ m
3, the thickness of porous foam metal plate is 5-50mm, and on per inch porous foam metal plate, the number PPI in hole is 10-100.
Radial flow type electric precipitator of the present invention, the quantity of wherein said playpipe is 3-20, playpipe is that upper and lower two rows are arranged, each playpipe is respectively equipped with 5-20 described nozzles, nozzle on each playpipe goes to upper and lower two row's Heterogeneous Permutations, often the interval of arranging between the nozzle that left and right is adjacent in nozzle is less than or equal to the length of spraying seam, often arranges the front end face of nozzle and the distance between the described collecting electrode web plate in its dead ahead is 15-30mm; The bulk density of described porous foam metal plate is 0.7g/cm
3, the specific area of porous foam metal plate is 9.8 × 10
5-1.0 × 10
6m
2/ m
3, the thickness of porous foam metal plate is 8-20mm, and on per inch porous foam metal plate, the number PPI in hole is 40-60.
Radial flow type electric precipitator of the present invention, wherein said deashing chamber is communicated with the air inlet of dedusting air flue by the ventilation duct being in series with blower fan, the rear of described control of dust chain row is provided with rear electric discharge net, rear electric discharge net and described radial-flow type electric precipitation discharge net equipotential, and the rear surface of the rear loop section that wire side and the control of dust chain of rear electric discharge net are arranged is parallel.
The using method of Radial flow type electric precipitator of the present invention, it comprises the steps:
A, connect high-voltage DC power supply, allow the radial-flow type electric precipitation of Radial flow type electric precipitator discharge to produce between net and collecting electrode web plate the electrical potential difference of more than 20000 volts;
B, dusty gas is allowed to enter the dedusting air flue of Radial flow type electric precipitator, and pass radial-flow type electric precipitation electric discharge net along the dedusting air flue of Radial flow type electric precipitator, the flowing velocity of dusty gas in dedusting air flue is lower than 5 meter per seconds, grit in dusty gas can be in state-of-charge when netting through the electric discharge of radial-flow type electric precipitation, then dusty gas is again through the collecting electrode web plate of control of dust chain row, dusty gas is when the collecting electrode web plate through control of dust chain row, and grit charged in dusty gas can be caught by collecting electrode web plate;
C, allow control of dust chain arrange rotate, control of dust chain row movement velocity lower than 3 ms/min, make the collecting electrode web plate containing dust enter in described deashing chamber;
D, in deashing chamber, pressure air or steam is utilized to purge collecting electrode web plate, wherein the pressure of pressure air is for being less than 1.0MPa, the pressure of steam is less than 1.5MPa, and outwards bleed from deashing chamber in advance or simultaneously, the tolerance of the gas extracted out from deashing chamber is greater than blows the tolerance that ash enters pressure air deashing chamber or steam.
The using method of Radial flow type electric precipitator of the present invention, there is between radial-flow type electric precipitation electric discharge net and collecting electrode web plate in wherein said steps A the electrical potential difference of 30000-80000 volts, in described step B, the flowing velocity of dusty gas in described dedusting air flue is 0.3-4 meter per seconds, in described step C, the movement velocity of control of dust chain row is 0.2-2.6 ms/min, in described step D, the pressure of pressure air is 0.02-0.8MPa, pressure air is heated to 100 DEG C-300 DEG C, the pressure of steam is 0.2-1.2MPa, the temperature of steam is 120 DEG C-350 DEG C, the tolerance of gas of extracting out from deashing chamber is blow 1.2 times-5.2 times that ash enters the tolerance of deashing chamber.
The using method of Radial flow type electric precipitator of the present invention, there is between radial-flow type electric precipitation electric discharge net and collecting electrode web plate in wherein said steps A the electrical potential difference of 50000-75000 volts, in described step B, the flowing velocity of dusty gas in described dedusting air flue is 0.5-3 meter per seconds, in described step C, the movement velocity of control of dust chain row is 0.5-2.0 ms/min, in described step D, the pressure of pressure air is 0.1-0.6MPa, pressure air is heated to 120 DEG C-260 DEG C, the pressure of steam is 0.5-1.0MPa, the temperature of steam is 150 DEG C-300 DEG C, the tolerance of gas of extracting out from deashing chamber is blow 1.6 times-4.2 times that ash enters the tolerance of deashing chamber.
The using method of Radial flow type electric precipitator of the present invention, there is between radial-flow type electric precipitation electric discharge net and collecting electrode web plate in wherein said steps A the electrical potential difference of 60000-70000 volts, in described step B, the flowing velocity of dusty gas in described dedusting air flue is 0.8-2 meter per seconds, in described step C, the movement velocity of control of dust chain row is 0.8-1.5 ms/min, in described step D, the pressure of pressure air is 0.2-0.5MPa, pressure air is heated to 140 DEG C-220 DEG C, the pressure of steam is 0.6-0.8MPa, the temperature of steam is 180 DEG C-260 DEG C, the tolerance of gas of extracting out from deashing chamber is blow 2.5 times-3.5 times that ash enters the tolerance of deashing chamber.
The using method of Radial flow type electric precipitator of the present invention, there is between radial-flow type electric precipitation electric discharge net and collecting electrode web plate in wherein said steps A the electrical potential difference of 65000-68000 volts, in described step B, the flowing velocity of dusty gas in described dedusting air flue is 0.9-1.2 meter per seconds, in described step C, the movement velocity of control of dust chain row is 0.9-1.3 ms/min, in described step D, the pressure of pressure air is 0.3-0.4MPa, pressure air is heated to 150 DEG C-200 DEG C, the pressure of steam is 0.65-0.7MPa, the temperature of steam is 210 DEG C-230 DEG C, the tolerance of gas of extracting out from deashing chamber is blow 2.8 times-3.2 times that ash enters the tolerance of deashing chamber.
Radial flow type electric precipitator of the present invention and using method, it comprises casing, dedusting air flue is provided with in casing, radial-flow type electric precipitation electric discharge net is provided with in dedusting air flue, the rear of radial-flow type electric precipitation electric discharge net is provided with the control of dust chain row of annular, the front surface of front loop section of control of dust chain row and the radial-flow type electric precipitation wire side netted that discharges is parallel, by the electrical connection with high-voltage DC power supply, allow radial-flow type electric precipitation discharge to produce between net and collecting electrode web plate the electrical potential difference of more than 20000 volts, the bottom of control of dust chain row is positioned at deashing chamber, deashing chamber is positioned at the below of dedusting air flue, seal diaphragm is provided with between deashing chamber and dedusting air flue, control of dust chain row is passed down through seal diaphragm and enters deashing chamber, the vicinity being positioned at described control of dust chain row in deashing chamber is provided with blowing pipe in left-right direction, blowing pipe comprises the more than one playpipe arranged in left-right direction, each playpipe respectively by conduit with compressed-air actuated source of the gas can be provided and/or the vapour source of steam can be provided to be connected, the front end of each playpipe is respectively equipped with multiple nozzle, again in conjunction with the distinctive using method of the present invention, comprise the flowing velocity of dusty gas in dedusting air flue lower than 5 meter per seconds, the movement velocity of control of dust chain row is lower than 3 ms/min, in deashing chamber, utilize pressure air or steam to purge collecting electrode web plate, wherein the pressure of pressure air is for being less than 1.0MPa, the pressure of steam is less than 1.5MPa, especially take and outwards bleed from deashing chamber in advance or simultaneously, the tolerance of gas of extracting out from deashing chamber is greater than blows the tolerance that ash enters pressure air deashing chamber or steam.Experiment shows, Radial flow type electric precipitator of the present invention and using method are in the fume treatment of station boiler, Dust Capacity in the flue gas that its process is discharged is lower than 10 milligrams/cubic metre, and its dust removing effects meets new boiler of power plant smoke evacuation environmental protection standard completely.That is, in flue gas in power station boiler, most dust can be entered lung particle and can be disposed by Radial flow type electric precipitator of the present invention and using method, and it is very large to process tolerance within the unit interval, remove the fine dusts effect comprising PM2.5 very outstanding, dust removal performance is highly stable.Therefore, it is large-minded that the using method of Radial flow type electric precipitator of the present invention has process in the unit interval, and remove the fine dusts effect comprising PM2.5 very outstanding, dust removal performance is extremely stable, and operating cost is low, the feature of long service life.
Below in conjunction with accompanying drawing, Radial flow type electric precipitator of the present invention and using method are described in further detail.
Accompanying drawing explanation
Fig. 1 is the front view of the structural representation of Radial flow type electric precipitator of the present invention;
The structural representation of the blowing pipe part that Fig. 2 is Radial flow type electric precipitator of the present invention;
Fig. 3 is the zoomed-in view of structural representation Radial flow type electric precipitator of the present invention being provided with blowing pipe part.
Detailed description of the invention
As Fig. 1, shown in Fig. 2 and Fig. 3, Radial flow type electric precipitator of the present invention, comprise casing 1, dedusting air flue 2 is provided with in casing 1, radial-flow type electric precipitation electric discharge net 3 is provided with in dedusting air flue 2, the rear of radial-flow type electric precipitation electric discharge net 3 is provided with the control of dust chain row 4 of annular, the discharge wire side of net 3 of the front surface of front loop section of control of dust chain row 4 and radial-flow type electric precipitation is parallel, by the electrical connection with high-voltage DC power supply (not shown in FIG.), allow radial-flow type electric precipitation discharge to produce between net 3 and collecting electrode web plate 11 electrical potential difference of more than 20000 volts, the bottom of control of dust chain row 4 is positioned at deashing chamber 5, deashing chamber 5 is positioned at the below of dedusting air flue 2, seal diaphragm 6 is provided with between deashing chamber 5 and dedusting air flue 2, control of dust chain row 4 is passed down through seal diaphragm 6 and enters deashing chamber 5, the vicinity being positioned at control of dust chain row 4 in deashing chamber 5 is provided with blowing pipe in left-right direction, blowing pipe comprises the more than one playpipe 7 arranged in left-right direction, each playpipe 7 respectively by conduit 8 with compressed-air actuated source of the gas can be provided and/or the vapour source of steam can be provided to be connected, conduit 8 is in series with magnetic valve 9 or electronic pipe valve, the front end of each playpipe 7 is respectively equipped with multiple nozzle 10, the front end face of each nozzle 10 is respectively equipped with and sprays seam, each injection seam is extended in left-right direction respectively,
Control of dust chain row 4 comprises the collecting electrode web plate 11 that multiple plate mask has the air-vent by air-flow, the front end face of nozzle 10 and the distance between the collecting electrode web plate 11 in its dead ahead are 5-100mm, collecting electrode web plate 11 adopts porous foam metal plate or multiple corrugated plating arranged side by side or multiple flat board arranged side by side or cellular board or the superposition of multiple silk screen to make, multiple collecting electrode web plate 11 mutually splicing is arranged in annular, be hinged between adjacent collecting electrode web plate 11 connected, the top loop of control of dust chain row 4 is arranged around chain row driving shaft 12, the axis of chain row driving shaft 12 is arranged along left and right horizontal direction, chain row driving shaft 12 can be arranged on casing 1 rotationally, chain row driving shaft 12 is connected with drive motors (not shown in FIG.) transmission by speed changer (not shown in FIG.), speed changer is arranged on casing 1, chain row driving shaft 12 is set with chain row driving wheel 13, chain row driving wheel 13 can drive control of dust chain to arrange 4 and rotate.In use, regularly can start drive motors, rotated by chain row driving shaft 12 through speed changer by drive motors, then chain row driving shaft 12 drives control of dust chain to arrange 47 rotations by chain row driving wheel 13, collecting electrode web plate 11 circulation that have collected a large amount of dust is allowed to enter in deashing chamber 5, utilize blowing pipe to remove the dust on collecting electrode web plate 11 one by one, after removing, deashing chamber 5 is left in collecting electrode web plate 11 recirculation, gets back in dedusting air flue 2.Owing to being remove at deashing chamber 5 pairs of collecting electrode web plates 11, the secondary fly-up of dust can be avoided to cause dust removing effects to be deteriorated.
As improvement of the present invention, above-mentioned conduit 8 is in series with the heater (not shown in FIG.) for heated compressed air, the front end face of whole nozzle 10 is positioned on same vertical plane, the front end face of nozzle 10 and the distance between the collecting electrode web plate 11 in its dead ahead are 10-50mm, the left end of injection seam extends to the edge on the left of nozzle 10 front end face, and the right-hand member of injection seam extends to the edge on the right side of nozzle 10 front end face; Each collecting electrode web plate 11 comprises the porous foam metal plate that multiple plate face is positioned at left and right vertical direction, the side of adjacent porous foam metal plate is affixed each other, multiple porous foam metal plate is spliced into the collecting electrode web plate that plate mask has the air-vent by air-flow, the rear of collecting electrode web plate is provided with installing rack 17, collecting electrode web plate is fixed on installing rack 17, is hinged connected between adjacent collecting electrode web plate 11 by installing rack 17; The bulk density of porous foam metal plate is 0.15-2g/cm
3, the specific area of porous foam metal plate is 7.8 × 10
2-1.5 × 10
8m
2/ m
3, the thickness of porous foam metal plate is 3-60mm, and on per inch porous foam metal plate, the number PPI in hole is 5-110.Adopt the collecting electrode web plate 11 that the porous foam metal plate of above-mentioned parameter is made, can ensure that its flow of process air amount is large, the efficiency of the dust that eliminating particle is very tiny is high, make collecting electrode web plate 11 wear-resistant, long service life, and the dust absorbed can be allowed to be eliminated from porous foam metal plate smoothly.
As a further improvement on the present invention, the quantity of above-mentioned playpipe 7 is 2-30, each playpipe 7 is respectively equipped with 2-30 nozzles 10, the middle part of each playpipe 7 rear end is respectively equipped with fluid inlet, the fluid inlet of each playpipe 7 is connected with the fluid issuing of a conduit 8 respectively, and heater (not shown in FIG.) is steam air heater or electric airheater; The bulk density of porous foam metal plate is 0.35-1.5g/cm
3, the specific area of porous foam metal plate is 7.8 × 10
3-1.5 × 10
7m
2/ m
3, the thickness of porous foam metal plate is 5-50mm, and on per inch porous foam metal plate, the number PPI in hole is 10-100.The collecting electrode web plate 11 adopting the porous foam metal plate of above-mentioned parameter to make, can allow the complex art effect of equipment more optimize further.
As a further improvement on the present invention, the quantity of above-mentioned playpipe 7 is 3-20, playpipe 7 is arranged in upper and lower two rows, each playpipe 7 is respectively equipped with 5-20 nozzles 10, nozzle 10 on each playpipe 7 goes to upper and lower two row's Heterogeneous Permutations, often the interval of arranging between the nozzle 10 that in nozzle 10, left and right is adjacent is less than or equal to the length of spraying seam, and often row's front end face of nozzle 10 and the distance between the collecting electrode web plate 11 in its dead ahead are 10-20mm; The bulk density of porous foam metal plate is 0.7-8.0g/cm
3, the specific area of porous foam metal plate is 9.8 × 10
5-1.0 × 10
6m
2/ m
3, the thickness of porous foam metal plate is 15-30mm, and on per inch porous foam metal plate, the number PPI in hole is 40-60.The collecting electrode web plate 11 adopting the porous foam metal plate of above-mentioned parameter to make, can allow the complex art effect of equipment more optimize further.
As a further improvement on the present invention, above-mentioned deashing chamber 5 is communicated with the air inlet of dedusting air flue 2 by the ventilation duct being in series with blower fan, the rear of control of dust chain row 4 is provided with rear electric discharge net 14, rear electric discharge net 14 and radial-flow type electric precipitation discharge net 3 equipotential, and the rear surface that the rear loop section of 4 arranged by wire side and the control of dust chain of rear electric discharge net 14 is parallel.
The using method of Radial flow type electric precipitator of the present invention, it comprises the steps:
A, connect high-voltage DC power supply, allow the radial-flow type electric precipitation of Radial flow type electric precipitator discharge to produce between net 3 and collecting electrode web plate 11 electrical potential difference of more than 20000 volts;
B, dusty gas is allowed to enter the dedusting air flue 2 of Radial flow type electric precipitator, and pass radial-flow type electric precipitation electric discharge net 3 along the dedusting air flue 2 of Radial flow type electric precipitator, the flowing velocity of dusty gas in dedusting air flue 2 is lower than 5 meter per seconds, grit in dusty gas can be in state-of-charge when discharging net 3 through radial-flow type electric precipitation, then dusty gas is again through the collecting electrode web plate 11 of control of dust chain row 4, dusty gas is when the collecting electrode web plate 11 through control of dust chain row 4, and grit charged in dusty gas can be caught by collecting electrode web plate 11;
C, allow control of dust chain arrange 4 to rotate, the movement velocity of control of dust chain row 4, lower than 3 ms/min, makes the collecting electrode web plate 11 containing dust enter in deashing chamber 5;
D, in deashing chamber 5, pressure air or steam is utilized to purge collecting electrode web plate 11, wherein the pressure of pressure air is for being less than 1.0MPa, the pressure of steam is less than 1.5MPa, and outwards bleed from deashing chamber 5 in advance or simultaneously, the tolerance of the gas extracted out from deashing chamber 5 is greater than blows the tolerance that ash enters pressure air deashing chamber 5 or steam.
As improvement of the present invention, there is between radial-flow type electric precipitation electric discharge net 3 and collecting electrode web plate 11 in above-mentioned steps A the electrical potential difference of 30000-80000 volts, in step B, the flowing velocity of dusty gas in dedusting air flue 2 is 0.3-4 meter per seconds, in step C, the movement velocity of control of dust chain row 4 is 0.2-2.6 ms/min, in step D, the pressure of pressure air is 0.02-0.8MPa, pressure air is heated to 100 DEG C-300 DEG C, the pressure of steam is 0.2-1.2MPa, the temperature of steam is 120 DEG C-350 DEG C, the tolerance of gas of extracting out from deashing chamber 5 is blow 1.2 times-5.2 times that ash enters the tolerance of deashing chamber 5.
As a further improvement on the present invention, there is between radial-flow type electric precipitation electric discharge net 3 and collecting electrode web plate 11 in above-mentioned steps A the electrical potential difference of 50000-75000 volts, in step B, the flowing velocity of dusty gas in dedusting air flue 2 is 0.5-3 meter per seconds, in step C, the movement velocity of control of dust chain row 4 is 0.5-2.0 ms/min, in step D, the pressure of pressure air is 0.1-0.6MPa, pressure air is heated to 120 DEG C-260 DEG C, the pressure of steam is 0.5-1.0MPa, the temperature of steam is 150 DEG C-300 DEG C, the tolerance of gas of extracting out from deashing chamber 5 is blow 1.6 times-4.2 times that ash enters the tolerance of deashing chamber 5.
As a further improvement on the present invention, there is between radial-flow type electric precipitation electric discharge net 3 and collecting electrode web plate 11 in above-mentioned steps A the electrical potential difference of 60000-70000 volts, in step B, the flowing velocity of dusty gas in dedusting air flue 2 is 0.8-2 meter per seconds, in step C, the movement velocity of control of dust chain row 4 is 0.8-1.5 ms/min, in step D, the pressure of pressure air is 0.2-0.5MPa, pressure air is heated to 140 DEG C-220 DEG C, the pressure of steam is 0.6-0.8MPa, the temperature of steam is 180 DEG C-260 DEG C, the tolerance of gas of extracting out from deashing chamber 5 is blow 2.5 times-3.5 times that ash enters the tolerance of deashing chamber 5.
As a further improvement on the present invention, there is between radial-flow type electric precipitation electric discharge net 3 and collecting electrode web plate 11 in above-mentioned steps A the electrical potential difference of 65000-68000 volts, in step B, the flowing velocity of dusty gas in dedusting air flue 2 is 0.9-1.2 meter per seconds, in step C, the movement velocity of control of dust chain row 4 is 0.9-1.3 ms/min, in step D, the pressure of pressure air is 0.3-0.4MPa, pressure air is heated to 150 DEG C-200 DEG C, the pressure of steam is 0.65-0.7MPa, the temperature of steam is 210 DEG C-230 DEG C, the tolerance of gas of extracting out from deashing chamber 5 is blow 2.8 times-3.2 times that ash enters the tolerance of deashing chamber 5.
The using method of Radial flow type electric precipitator of the present invention, adopt the distinctive step of the present invention, comprise the flowing velocity of dusty gas in dedusting air flue lower than 5 meter per seconds, the movement velocity of control of dust chain row is lower than 3 ms/min, in deashing chamber, utilize pressure air or steam to purge collecting electrode web plate, wherein the pressure of pressure air is for being less than 1.0MPa, the pressure of steam is less than 1.5MPa, especially take and outwards bleed from deashing chamber in advance or simultaneously, the tolerance of gas of extracting out from deashing chamber is greater than blows the tolerance that ash enters pressure air deashing chamber or steam, can ensure that its flow of process air amount is large thus, the efficiency of the dust that eliminating particle is very tiny is high, make service life of equipment long, and the dust absorbed can be allowed to be eliminated smoothly, can not produce again to fly upward causes efficiency of dust collection to decline.Use Radial flow type electric precipitator of the present invention and using method, effectively can ensure that its dedusting tolerance and efficiency of dust collection maintain above design level, and effectively can reduce windage, reduce energy consumption.
Claims (10)
1. Radial flow type electric precipitator, it is characterized in that: comprise casing (1), dedusting air flue (2) is provided with in casing (1), radial-flow type electric precipitation electric discharge net (3) is provided with in dedusting air flue (2), the rear of radial-flow type electric precipitation electric discharge net (3) is provided with control of dust chain row (4) of annular, the discharge wire side of net (3) of the front surface of front loop section of control of dust chain row (4) and radial-flow type electric precipitation is parallel, by the electrical connection with high-voltage DC power supply, allow radial-flow type electric precipitation discharge between net (3) and collecting electrode web plate (11) and produce the electrical potential difference of more than 20000 volts, the bottom of control of dust chain row (4) is positioned at deashing chamber (5), deashing chamber (5) is positioned at the below of described dedusting air flue (2), seal diaphragm (6) is provided with between deashing chamber (5) and dedusting air flue (2), control of dust chain row (4) is passed down through seal diaphragm (6) and enters deashing chamber (5), the vicinity being positioned at described control of dust chain row (4) in deashing chamber (5) is provided with blowing pipe in left-right direction, blowing pipe comprises the more than one playpipe (7) arranged in left-right direction, each playpipe (7) respectively by conduit (8) with compressed-air actuated source of the gas can be provided and/or the vapour source of steam can be provided to be connected, conduit (8) is in series with magnetic valve (9) or electronic pipe valve, the front end of each described playpipe (7) is respectively equipped with multiple nozzle (10),
Described control of dust chain row (4) comprises multiple plate mask collecting electrode web plate (11) by the air-vent of air-flow, distance between the front end face of nozzle (10) and the described collecting electrode web plate (11) being positioned at its dead ahead is 5-100mm, collecting electrode web plate (11) adopts porous foam metal plate or multiple corrugated plating arranged side by side or multiple flat board arranged side by side or cellular board or the superposition of multiple silk screen to make, multiple collecting electrode web plate (11) mutually splicing is arranged in annular, be hinged between adjacent collecting electrode web plate (11) connected, the top loop of described control of dust chain row (4) is arranged driving shaft (12) around chain and is arranged, the axis of chain row's driving shaft (12) is arranged along left and right horizontal direction, chain row's driving shaft (12) can be arranged on described casing (1) rotationally, chain row's driving shaft (12) is connected with drive motors transmission by speed changer, speed changer is arranged on described casing (1), described chain row's driving shaft (12) is set with chain row's driving wheel (13), chain row's driving wheel (13) can drive described control of dust chain to arrange (4) and rotate.
2. Radial flow type electric precipitator according to claim 1, it is characterized in that: described conduit (8) is in series with the heater for heated compressed air, the front end face of whole described nozzle (10) is positioned on same vertical plane, the front end face of each nozzle (10) is respectively equipped with and sprays seam, each injection seam is extended in left-right direction respectively, distance between the front end face of nozzle (10) and the described collecting electrode web plate (11) being positioned at its dead ahead is 10-50mm, the described left end spraying seam extends to the edge on the left of nozzle (10) front end face, the right-hand member of injection seam extends to the edge on the right side of nozzle (10) front end face, each described collecting electrode web plate (11) comprises the porous foam metal plate that multiple plate face is positioned at left and right vertical direction, the side of adjacent porous foam metal plate is affixed each other, multiple porous foam metal plate is spliced into the collecting electrode web plate that plate mask has the air-vent by air-flow, the rear of collecting electrode web plate is provided with installing rack (17), collecting electrode web plate is fixed on installing rack (17), is hinged connected between adjacent collecting electrode web plate (11) by installing rack (17), the bulk density of described porous foam metal plate is 0.15-2g/cm
3, the specific area of porous foam metal plate is 7.8 × 10
2-1.5 × 10
8m
2/ m
3, the thickness of porous foam metal plate is 3-60mm, and on per inch porous foam metal plate, the number PPI in hole is 5-110.
3. Radial flow type electric precipitator according to claim 2, it is characterized in that: the quantity of described playpipe (7) is 2-30, each playpipe (7) is respectively equipped with 2-30 described nozzles (10), the middle part of each playpipe (7) rear end is respectively equipped with fluid inlet, the fluid inlet of each playpipe (7) is connected with the fluid issuing of a described conduit (8) respectively, and described heater is steam air heater or electric airheater; The bulk density of described porous foam metal plate is 0.35-1.5g/cm
3, the specific area of porous foam metal plate is 7.8 × 10
3-1.5 × 10
7m
2/ m
3, the thickness of porous foam metal plate is 5-50mm, and on per inch porous foam metal plate, the number PPI in hole is 10-100.
4. Radial flow type electric precipitator according to claim 3, it is characterized in that: the quantity of described playpipe (7) is 3-20, playpipe (7) is arranged in upper and lower two rows, each playpipe (7) is respectively equipped with 5-20 described nozzles (10), nozzle (10) on each playpipe (7) is presented, lower two row's Heterogeneous Permutations, the interval of often arranging between the adjacent nozzle (10) in the middle left and right of nozzle (10) is less than or equal to the length of spraying seam, the distance of often arranging between the front end face of nozzle (10) and the described collecting electrode web plate (11) being positioned at its dead ahead is 15-30mm, the bulk density of described porous foam metal plate is 0.7g/cm
3, the specific area of porous foam metal plate is 9.8 × 10
5-1.0 × 10
6m
2/ m
3, the thickness of porous foam metal plate is 8-20mm, and on per inch porous foam metal plate, the number PPI in hole is 40-60.
5. Radial flow type electric precipitator according to claim 4, it is characterized in that: described deashing chamber (5) is communicated with the air inlet of dedusting air flue (2) by the ventilation duct being in series with blower fan, the rear of described control of dust chain row (4) is provided with rear electric discharge net (14), rear electric discharge net (14) and described radial-flow type electric precipitation discharge net (3) equipotential, and the wire side of rear electric discharge net (14) arranges the rear loop section of (4) rear surface with control of dust chain is parallel.
6. the using method of Radial flow type electric precipitator, is characterized in that it comprises the steps:
A, connect high-voltage DC power supply, allow the radial-flow type electric precipitation of Radial flow type electric precipitator discharge between net (3) and collecting electrode web plate (11) and produce the electrical potential difference of more than 20000 volts;
B, dusty gas is allowed to enter the dedusting air flue (2) of Radial flow type electric precipitator, and along Radial flow type electric precipitator dedusting air flue (2) through radial-flow type electric precipitation electric discharge net (3), the flowing velocity of dusty gas in dedusting air flue (2) is lower than 5 meter per seconds, grit in dusty gas can be in state-of-charge when discharging net (3) through radial-flow type electric precipitation, then dusty gas is again through the collecting electrode web plate (11) of described control of dust chain row (4), dusty gas is when collecting electrode web plate (11) through control of dust chain row (4), grit charged in dusty gas can be caught by collecting electrode web plate (11),
C, allow control of dust chain arrange (4) rotate, control of dust chain row (4) movement velocity lower than 3 ms/min, make the collecting electrode web plate (11) containing dust enter in deashing chamber (5);
D, in deashing chamber (5), pressure air or steam is utilized to purge collecting electrode web plate (11), wherein the pressure of pressure air is for being less than 1.0MPa, the pressure of steam is less than 1.5MPa, and outwards bleed from deashing chamber (5) in advance or simultaneously, the tolerance of the gas extracted out from deashing chamber (5) is greater than blows the tolerance that ash enters pressure air deashing chamber (5) or steam.
7. the using method of Radial flow type electric precipitator according to claim 6, it is characterized in that: the electrical potential difference between radial-flow type electric precipitation electric discharge net (3) and collecting electrode web plate (11) in described steps A with 30000-80000 volts, in described step B, the flowing velocity of dusty gas in described dedusting air flue (2) is 0.3-4 meter per seconds, in described step C, the movement velocity of control of dust chain row (4) is 0.2-2.6 ms/min, in described step D, the pressure of pressure air is 0.02-0.8MPa, pressure air is heated to 100 DEG C-300 DEG C, the pressure of steam is 0.2-1.2MPa, the temperature of steam is 120 DEG C-350 DEG C, the tolerance of the gas extracted out from deashing chamber (5) is for blowing 1.2 times-5.2 times that ash enters the tolerance of deashing chamber (5).
8. the using method of Radial flow type electric precipitator according to claim 7, it is characterized in that: the electrical potential difference between radial-flow type electric precipitation electric discharge net (3) and collecting electrode web plate (11) in described steps A with 50000-75000 volts, in described step B, the flowing velocity of dusty gas in described dedusting air flue (2) is 0.5-3 meter per seconds, in described step C, the movement velocity of control of dust chain row (4) is 0.5-2.0 ms/min, in described step D, the pressure of pressure air is 0.1-0.6MPa, pressure air is heated to 120 DEG C-260 DEG C, the pressure of steam is 0.5-1.0MPa, the temperature of steam is 150 DEG C-300 DEG C, the tolerance of the gas extracted out from deashing chamber (5) is for blowing 1.6 times-4.2 times that ash enters the tolerance of deashing chamber (5).
9. the using method of Radial flow type electric precipitator according to claim 8, it is characterized in that: the electrical potential difference between radial-flow type electric precipitation electric discharge net (3) and collecting electrode web plate (11) in described steps A with 60000-70000 volts, in described step B, the flowing velocity of dusty gas in described dedusting air flue (2) is 0.8-2 meter per seconds, in described step C, the movement velocity of control of dust chain row (4) is 0.8-1.5 ms/min, in described step D, the pressure of pressure air is 0.2-0.5MPa, pressure air is heated to 140 DEG C-220 DEG C, the pressure of steam is 0.6-0.8MPa, the temperature of steam is 180 DEG C-260 DEG C, the tolerance of the gas extracted out from deashing chamber (5) is for blowing 2.5 times-3.5 times that ash enters the tolerance of deashing chamber (5).
10. the using method of Radial flow type electric precipitator according to claim 9, it is characterized in that: the electrical potential difference between radial-flow type electric precipitation electric discharge net (3) and collecting electrode web plate (11) in described steps A with 65000-68000 volts, in described step B, the flowing velocity of dusty gas in described dedusting air flue (2) is 0.9-1.2 meter per seconds, in described step C, the movement velocity of control of dust chain row (4) is 0.9-1.3 ms/min, in described step D, the pressure of pressure air is 0.3-0.4MPa, pressure air is heated to 150 DEG C-200 DEG C, the pressure of steam is 0.65-0.7MPa, the temperature of steam is 210 DEG C-230 DEG C, the tolerance of the gas extracted out from deashing chamber (5) is for blowing 2.8 times-3.2 times that ash enters the tolerance of deashing chamber (5).
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| CN103949345A (en) * | 2014-05-05 | 2014-07-30 | 孟金来 | Combined type runoff electric precipitation air purifier |
| KR20170020682A (en) * | 2015-08-14 | 2017-02-23 | (주)와이에이치비 | filter washing apparatus for electric dust collector |
| WO2022099631A1 (en) * | 2020-11-13 | 2022-05-19 | 江苏联合创业环保有限公司 | Radial flow-type electric deduster |
| CN115254426B (en) * | 2022-09-29 | 2022-12-16 | 南通锦华分离工程科技有限公司 | Dust removal device for furnace gas |
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Effective date of registration: 20170511 Address after: 750001 the Ningxia Hui Autonomous Region Rui Lu Jinfeng Industrial Park Jinfeng District of Yinchuan City, No. 97 Patentee after: Ningxia Ma Lianfu Electric Power Technology Co., Ltd. Address before: 100034 Beijing, Xicheng District jade Gallery, No. 8 official Park, building 2, unit 1606, 4 Patentee before: Meng Jinlai |
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Effective date of registration: 20220127 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: 750001 No. 97, Jinrui Road, Jinfeng Industrial Park, Jinfeng District, Yinchuan City, Ningxia Hui Autonomous Region Patentee before: NINGXIA MALIANFU POWER TECHNOLOGY CO.,LTD. |