CN113908988A - Anti-scaling wet electric dust collector and dust collection method for slag disintegrating system - Google Patents
Anti-scaling wet electric dust collector and dust collection method for slag disintegrating system Download PDFInfo
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- CN113908988A CN113908988A CN202111258206.0A CN202111258206A CN113908988A CN 113908988 A CN113908988 A CN 113908988A CN 202111258206 A CN202111258206 A CN 202111258206A CN 113908988 A CN113908988 A CN 113908988A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/16—Plant or installations having external electricity supply wet type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/74—Cleaning the electrodes
- B03C3/78—Cleaning the electrodes by washing
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Abstract
The invention relates to the field of wet-type electric precipitators, in particular to a fouling prevention wet-type electric precipitator for a slag disintegrating system and a dedusting method, which comprise an online spraying system and an offline spraying system which are arranged in a middle box body, wherein the water source of the online spraying system is clean water which is heated and PH adjusted, and the water source of the offline spraying system is circulating water which is discharged from a deduster and is subjected to ash-water separation, heating and PH adjustment; a heat tracing band and a heat insulating layer are additionally arranged on the outer sides of the clean water tank and the circulating water tank, and a PH meter and a temperature sensor are additionally arranged at the inlet and the outlet of the dust remover, so that the real-time monitoring and adjustment of the internal environmental parameters of the dust remover are realized. The improved anti-scaling wet electric dust collector of the slag disintegrating system not only can effectively clean the inner wall of the anode cylinder, but also can prevent substances in dust from scaling on the inner wall of the dust collector, and greatly improves the dust treatment efficiency of the wet electric dust collector.
Description
Technical Field
The invention relates to the field of wet-type electric precipitators, in particular to an anti-scaling wet-type electric precipitator for a slag disintegrating system and a dust removing method.
Background
The slag smoldering operation is a steel slag treatment technology widely applied to the steel industry, the slag smoldering adopts a water cooling mode, a large amount of water vapor can be inevitably generated in a cooling process, and contains a large amount of alkaline dust, the water vapor is mixed with the dust and drifts to the surrounding environment, so that the slag smoldering has a severe corrosion effect on a factory building, and is very unfavorable for environmental protection and worker health, and therefore, a wet electric precipitator is often adopted to treat dust-containing gas generated in the slag smoldering process.
The steel slag contains calcium oxide, magnesium oxide and other substances, and the substances are easy to scale in an anode cylinder of a wet electric dust collector after a series of physical and chemical reactions in water vapor. The existing wet-type electric dust collector usually adopts a top intermittent spraying technology to clean attachments adhered to the inner wall of the anode cylinder, but the spraying only has a certain cleaning effect on the non-scaling dust in the upper half part of the anode cylinder, and cannot effectively prevent scaling of the lower half part of the anode cylinder and other parts of the dust collector.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an anti-scaling wet electric precipitator for a slag disintegrating system and a dust removing method, which improve the structural form of a spraying device and a water supply process and effectively avoid the dust from scaling in the precipitator; corresponding instruments are added, and the stability of system operation is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a vexed slag system prevents scale deposit wet-type electrostatic precipitator, wet-type electrostatic precipitator is from supreme being constituteed by top head, well box, ash bucket three major parts in proper order down, and vertical suspension is in a plurality of negative pole lines of well box inside pass rather than the positive pole section of thick bamboo that corresponds and form the key subassembly of wet-type electrostatic precipitator, every wear to establish one in the positive pole section of thick bamboo the negative pole line, the dust of pending passes the negative pole line with behind the clearance between the positive pole section of thick bamboo, by top head discharge to reach standard. The top of positive pole section of thick bamboo is equipped with off-line spraying system, off-line spraying system includes off-line liquid feed pipe and off-line nozzle, every the top of positive pole section of thick bamboo all sets up 1 off-line nozzle, 1 off-line nozzle is responsible for 1 the spraying clearance of positive pole section of thick bamboo inner wall. The below of positive pole section of thick bamboo is equipped with online spraying system, online spraying system includes online liquid feed pipe and online nozzle, online nozzle distributes uniformly on the cross wind cross section of well box, online nozzle spun water smoke can be even mix with pending dust mutually, can be right again the latter half of positive pole section of thick bamboo inner wall clears up. The off-line spraying system intermittently sprays water downwards, and the on-line spraying system continuously sprays water upwards. The bottom of ash bucket is equipped with the ash bucket drain, the ash bucket drain passes through the curved separator sewage import that is connected to grey water separator of U type catchment, grey water separator's separator outlet and the circulating water import intercommunication at circulating water tank top, the first drain outlet of circulating water tank bottom communicates through circulating water pump to off-line spray system, the sewage that ash bucket drain discharged gets into behind the grey water separator, mud precipitates and gets off to discharge to corresponding treatment facility through the mud discharge port, comparatively clean water after grey water separation is as off-line spray system's circulating water. The top of the circulating water tank is also provided with a first acid liquid inlet which is communicated with a dosing device. The online liquid supply pipe is kept away from the delivery port that is connected with the clean water circulating pump in the direction of well box, the water inlet of clean water circulating pump is connected to the second outlet of clean water storage tank bottom, the top of clean water storage tank is equipped with the import of second acid liquid, import of second acid liquid and charge device intercommunication, water in the clean water storage tank is clean water, utilizes clean water as running water conduct online spraying system's water source, and the anti-scaling effect is better. And the top parts of the clean water storage tank and the circulating water tank are both provided with a temperature sensor and a PH sensor.
After dust discharged by the slag disintegrating system enters the dust remover, the dust contains alkaline substances such as calcium hydroxide, magnesium hydroxide and the like, and the substances are separated out in water and then attached to the surface of equipment, so that scaling can be generated over time. The working environment in wet-type electrostatic precipitation needs to be ensured to be weakly acidic, the pH value of the wet-type electrostatic precipitation is 5-7 optimal, and therefore the dosing device is used for adjusting the pH values of the circulating water tank and the clean water storage tank.
Furthermore, the bottom of ash bucket is close to the position department of ash bucket drain installs the PH sensor, line spraying system below is close to one side of ash bucket is equipped with temperature sensor, install temperature sensor on the head of top. The outer side walls of the clean water storage tank and the circulating water tank are respectively wound with heat tracing bands, and the heat tracing bands are externally provided with heat insulation layers. Because alkaline substances such as calcium hydroxide, magnesium hydroxide and the like are more easily separated out under the condition of lower temperature, the temperature environment in the wet electric dust collector needs to be controlled, when the temperature acquired by the temperature sensor is lower than the set value of the corresponding working position, the heat tracing band needs to be started, and the working temperature in the wet electric dust collector is not lower than 5 ℃.
Furthermore, the size of the off-line nozzle interface is 3/8 inches, the spraying flow rate is 9.5L/min, the spraying angle is 45 degrees, and the distance between the nozzle and the top end of the anode cylinder is 1-1.5 meters. The size of the online nozzle interface is 3/8 inches, the spraying flow rate is 15L/min, the spraying angle is 64-67 degrees, the distance between the nozzles is 0.8-1.2 meters, and the distance between the nozzles and the bottom end of the anode cylinder is 0.8-1.2 meters.
Furthermore, the grey-water separator is partitioned into a left area and a right area by an intermediate partition plate, the left area and the right area are communicated with a gap at the bottom of the grey-water separator through the intermediate partition plate, a sewage inlet of the separator is communicated with an inclined plate precipitation device, a bottom inclined plate is arranged at the bottom of the grey-water separator, and a sludge discharge port is formed in the side wall of the grey-water separator, which is positioned at the lower side of the bottom inclined plate. A filter layer is arranged on the right side of the middle partition plate, and a separator water outlet is formed in the side wall of the grey-water separator above the filter layer.
Furthermore, a circulating water replenishing port is formed in the top of the circulating water tank, a clean water replenishing port is formed in the top of the clean water storage tank, and the circulating water replenishing port and the clean water replenishing port are both connected with tap water.
The invention also comprises a dust removal method of the anti-scaling wet electric dust remover for the slag smoldering system, which comprises the following steps:
after the dust-containing gas to be treated enters the wet electric dust collector and passes through the gap between the cathode wire and the anode cylinder, the clean gas is discharged from the top seal head after reaching the standard, and the dust is left on the surface of the anode cylinder; when the dust on the surface of the anode cylinder is accumulated to a certain degree, the off-line spraying system is started to wash the surface of the anode cylinder; in the running process of the wet electric dust collector, the online spraying system is always started, the clean water storage tank supplies water for the online spraying system, the chemical adding device and the heat tracing band can adjust the PH value and the temperature value in the clean water storage tank, and after water in the online spraying system is mixed with gas to be treated, the PH value and the temperature of the gas can be adjusted, so that dust is prevented from scaling on the inner wall of equipment; after dust-containing wastewater discharged by the ash bucket passes through the ash-water separator, dust and water are separated, the separated dust is discharged from the sludge discharge port in a sludge form, the separated water enters the circulating water tank through the filtration of the filter layer, and after the PH adjustment and the temperature adjustment, the water in the circulating water tank enters the offline spraying system under the action of the circulating water pump; the temperature sensor and the PH sensor of installation on the wet-type electrostatic precipitator can its inside temperature value of real-time supervision and PH value, works as when the inside temperature value of wet-type electrostatic precipitator and PH value deviate from the setting value, then change the power of tracing band changes charge device's the medicine supply amount.
Compared with the prior art, the invention has the beneficial effects that:
an online spraying system is added at the bottom of the anode cylinder, so that the PH and the temperature of the anode cylinder can be adjusted after clean water is mixed with the gas to be treated, and dust is prevented from scaling on the inner wall of the equipment; the online spraying system can also clean the lower half part of the inner wall of the anode cylinder in real time; after the sewage discharged from the sewage outlet of the ash bucket is purified, the PH and the temperature are adjusted, and finally the off-line spraying system is recycled, so that the water source is saved, and the scaling can be effectively prevented; corresponding temperature and PH instruments are added to the ash bucket and the top end socket, so that the process parameters inside the wet electric dust collector can be known in real time, and the control is more accurate.
Drawings
Fig. 1 is a schematic structural diagram of an anti-scaling wet electric dust collector of a slag smoldering system in the invention.
Fig. 2 is a schematic structural view of an offline spraying system according to the present invention.
Fig. 3 is a schematic structural diagram of an on-line spraying system according to the present invention.
Fig. 4 is a schematic structural view of a clean water storage tank according to the present invention.
Fig. 5 is a schematic view showing the construction of the circulation water tank of the present invention.
FIG. 6 is a schematic diagram of a grey water separator according to the present invention.
In the figure: 1. a middle box body, 2, an anode cylinder, 3, a cathode wire, 4, an ash bucket, 4.1 of an ash bucket drain outlet, 5, a top seal head, 6, an online spraying system, 6.1 of an online liquid supply pipe, 6.2 of an online nozzle, 7 of an offline spraying system, 7.1 of an offline liquid supply pipe, 7.2 of an offline nozzle, 8 of a dosing device, 9 of a clean water storage tank, 9.1 of a second acid liquid inlet, 9.2 of a clean water replenishing port, 9.3 of a second water outlet, 10 of a clean water circulating pump, 11, an ash-water separator, 11.1 of a separator sewage inlet, 11.2 of a separator water outlet, 11.3 of an inclined plate precipitation device, 11.4 of a sludge discharge port, 11.5 of a middle partition plate, 11.6 of a bottom inclined plate, 12 of a circulating water tank, 12.1 of a circulating water inlet, 12.2 of circulating water replenishing port, 12.3 of a first acid liquid inlet, 12.4 of a first water discharge port, 13 of a circulating water pump, 14 of a temperature sensor, 15 of a pH sensor, 16 of a pH sensor, and a pH sensor, A heat tracing band.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figures 1 to 3, a stifled sediment system scale deposit prevention wet-type electrostatic precipitator, wet-type electrostatic precipitator is from supreme 5, well box 1, the three most of ash bucket of top head in proper order down, vertical suspension in midair 1 inside a plurality of negative pole lines 3 of well box pass and form the key subassembly of wet-type electrostatic precipitator rather than the positive pole section of thick bamboo 2 that corresponds, every wear to establish one in the positive pole section of thick bamboo 2 negative pole line 3, the dust of treating passes negative pole line 3 with behind the clearance between the positive pole section of thick bamboo 2, by top head 5 discharge to reach standard. The top of anode cylinder 2 is equipped with off-line spraying system 7, off-line spraying system 7 includes off-line liquid feed pipe 7.1 and off-line nozzle 7.2, every the top of anode cylinder 2 all sets up 1 off-line nozzle 7.2, 1 off-line nozzle 7.2 is responsible for 1 the clearance that sprays of 2 inner walls of anode cylinder. The below of anode cylinder 2 is equipped with online spraying system 6, online spraying system 6 includes online feed pipe 6.1 and online nozzle 6.2, online nozzle 6.2 distributes uniformly on the cross wind cross section of well box 1, online nozzle 6.2 spun water smoke can be even mix with pending dust mutually, can be right again the latter half of 2 inner walls of anode cylinder clears up. The off-line sprinkler system 7 intermittently sprays water downwardly and the on-line sprinkler system 6 continuously sprays water upwardly. The bottom of the ash bucket 4 is provided with an ash bucket drain outlet 4.1, the ash bucket drain outlet 4.1 is connected to a separator sewage inlet 11.1 of the ash-water separator 11 through a U-shaped water collecting bend, a separator water outlet 11.2 of the ash-water separator 11 is communicated with a circulating water inlet 12.1 at the top of the circulating water tank 12, a first water outlet 12.4 at the bottom of the circulating water tank 12 is communicated to the off-line spraying system 7 through a circulating water pump 13, after sewage discharged from the ash bucket drain outlet 4.1 enters the ash-water separator 11, sludge is precipitated and discharged to corresponding treatment equipment through a sludge discharge outlet 11.4, and cleaner water after ash-water separation is used for circulating water of the off-line spraying system 7. The top of the circulating water tank 12 is also provided with a first acid liquid inlet 12.3, and the first acid liquid inlet 12.3 is communicated with the dosing device 8. The online liquid supply pipe 6.1 is far away from be connected with the delivery port of clean water circulating pump 10 in the direction of well box 1, the water inlet one end of clean water circulating pump 10 is connected to the second outlet 9.3 of clean water storage tank 9 bottom, the top of clean water storage tank 9 is equipped with second acid liquid import 9.1, second acid liquid import 9.1 and charge device 8 intercommunication, the water in the clean water storage tank 9 is clean water, utilizes clean water as running water the scale deposit prevention effect of line spraying system 6 is better. And a temperature sensor 14 and a pH sensor 15 are mounted at the tops of the clean water storage tank 9 and the circulating water tank 12.
After dust discharged by the slag disintegrating system enters the dust remover, the dust contains alkaline substances such as calcium hydroxide, magnesium hydroxide and the like, and the substances are separated out in water and then attached to the surface of equipment, so that scaling can be generated over time. The working environment in wet-type electric precipitation needs to be ensured to be weakly acidic, the pH value of the wet-type electric precipitation is 5-7 optimal, and therefore the chemical adding device 8 is used for adjusting the pH values of the circulating water tank 12 and the clean water storage tank 9.
As shown in fig. 1, 4 and 5, a PH sensor 15 is installed at a position, close to a sewage discharge port 4.1 of the ash bucket, at the bottom of the ash bucket 4, a temperature sensor 14 is installed at one side, close to the ash bucket 4, below the line spraying system 6, and the temperature sensor 14 is installed on the top seal head 5. The outer side walls of the clean water storage tank 9 and the circulating water tank 12 are respectively wound with a heat tracing band 16, and a heat insulation layer is arranged outside the heat tracing band 16. Since alkaline substances such as calcium hydroxide and magnesium hydroxide are more easily separated out under the condition of low temperature, the temperature environment in the wet electric dust collector needs to be controlled, when the temperature collected by the temperature sensor 14 is lower than the set value of the corresponding working position, the heat tracing band 16 needs to be started, and the working temperature in the wet electric dust collector is not lower than 5 ℃.
The size of the 7.2 interface of the off-line nozzle is 3/8 inches, the spraying flow rate is 9.5L/min, the spraying angle is 45 degrees, and the distance between the nozzle and the top end of the anode cylinder 2 is 1-1.5 meters. The size of the 6.2 interface of the online nozzle is 3/8 inches, the spraying flow rate is 15L/min, the spraying angle is 64-67 degrees, the distance between the nozzles is 0.8-1.2 meters, and the distance between the nozzle and the bottom end of the anode cylinder 2 is 0.8-1.2 meters.
As shown in fig. 6, the grey-water separator 11 is partitioned into left and right 2 areas by a middle partition plate 11.5, the left and right 2 areas are communicated with a gap at the bottom of the grey-water separator 11 through the middle partition plate 11.5, the separator sewage inlet 11.1 is communicated with an inclined plate precipitation device 11.3, a bottom inclined plate 11.6 is arranged at the bottom of the grey-water separator 11, and a sludge discharge port 11.4 is arranged at the side of the side wall of the grey-water separator 11, which is positioned at the lower side of the bottom inclined plate 11.6. A filter layer 11.7 is arranged on the right side of the middle partition plate 11.5, and a separator water outlet 11.2 is formed in the side wall of the grey-water separator 11 above the filter layer 11.7.
The top of the circulating water tank 12 is provided with a circulating water replenishing port 12.2, the top of the clean water storage tank 9 is provided with a clean water replenishing port 9.2, and the circulating water replenishing port 12.2 and the clean water replenishing port 9.2 are both connected with tap water.
The invention also comprises a dust removal method of the anti-scaling wet electric dust remover for the slag smoldering system, which comprises the following steps:
after the gas containing dust to be treated enters the wet electric dust collector and passes through the gap between the cathode wire 3 and the anode cylinder 2, the clean gas is discharged by the top seal head 5 after reaching the standard, and the dust is left on the surface of the anode cylinder 2; when the dust on the surface of the anode cylinder 2 is accumulated to a certain degree, the off-line spraying system 7 is started to flush the surface of the anode cylinder 2; in the running process of the wet electric precipitator, the online spraying system 6 is always started, the clean water storage tank 9 supplies water for the online spraying system 6, the chemical adding device 8 and the heat tracing band 16 can adjust the PH value and the temperature value in the clean water storage tank 9, and after water in the online spraying system 6 is mixed with gas to be treated, the PH value and the temperature of the gas can be adjusted, so that dust is prevented from scaling on the inner wall of equipment; after dust-containing wastewater discharged from the ash bucket 4 passes through the ash-water separator 11, dust and water are separated, the separated dust is discharged from the sludge discharge port 11.4 in the form of sludge, the separated water enters the circulating water tank 12 through the filtration of the filter layer 11.7, and after the PH regulation and the temperature regulation, the water in the circulating water tank 12 enters the off-line spraying system 7 under the action of the circulating water pump 13; the temperature sensor 14 and the PH sensor 15 of installation on the wet-type electrostatic precipitator can its inside temperature value of real-time supervision and PH value, works as when the inside temperature value of wet-type electrostatic precipitator and PH value deviate from the set value, then change the power of heat tracing band 16 changes charge device 8's the medicine supply volume.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a vexed slag system prevents scale deposit wet-type electrostatic precipitator, includes anode cylinder (2), its characterized in that: an off-line spraying system (7) is arranged above the anode cylinder (2), an on-line spraying system (6) is arranged below the anode cylinder (2), the off-line spraying system (7) intermittently sprays water downwards, and the on-line spraying system (6) continuously sprays water upwards; an ash bucket (4) of the wet electric dust collector is arranged below the online spraying system (6), an ash bucket drain outlet (4.1) is formed in the bottom of the ash bucket (4), the ash bucket drain outlet (4.1) is connected to a separator sewage inlet (11.1) of an ash-water separator (11), a separator water outlet (11.2) of the ash-water separator (11) is communicated with a circulating water inlet (12.1) in the top of a circulating water tank (12), a first water outlet (12.4) in the bottom of the circulating water tank (12) is communicated to the offline spraying system (7) through a circulating water pump (13), a first acid liquid inlet (12.3) is further formed in the top of the circulating water tank (12), and the first acid liquid inlet (12.3) is communicated with a chemical adding device (8); a water outlet of a clean water circulating pump (10) is connected to the online liquid supply pipe (6.1) in the direction away from the dust remover main body, a water inlet of the clean water circulating pump (10) is connected to a second water outlet (9.3) at the bottom of a clean water storage tank (9), a second acid liquid inlet (9.1) is formed in the top of the clean water storage tank (9), the second acid liquid inlet (9.1) is communicated with a dosing device (8), and the clean water in the clean water storage tank (9) is clean water; and temperature sensors (14) and PH sensors (15) are respectively arranged at the tops of the clean water storage tank (9) and the circulating water tank (12).
2. The wet electric dust collector with the fouling prevention function for the slag smoldering system as recited in claim 1, wherein: the wet electric dust collector sequentially comprises a top seal head (5), a middle box body (1) and an ash bucket (4) from bottom to top, a plurality of cathode wires (3) vertically suspended in the middle box body (1) penetrate through corresponding anode cylinders (2) to form a wet electric dust collector key assembly, and one cathode wire (3) penetrates through each anode cylinder (2); the off-line spraying system (7) comprises an off-line liquid supply pipe (7.1) and off-line nozzles (7.2), and 1 off-line nozzle (7.2) is arranged above each anode cylinder (2); the online spraying system (6) comprises an online liquid supply pipe (6.1) and online nozzles (6.2), and the online nozzles (6.2) are uniformly distributed on the cross section of the middle box body (1) through wind.
3. The wet electric dust collector with the fouling prevention function for the slag smoldering system as recited in claim 1, wherein: the ash-water separator (11) is partitioned into a left area and a right area by a middle partition plate (11.5), the left area and the right area are communicated with a gap at the bottom of the ash-water separator (11) through the middle partition plate (11.5), an inclined plate precipitation device (11.3) is arranged below a sewage inlet (11.1) of the separator, a bottom inclined plate (11.6) is arranged at the bottom of the ash-water separator (11), and a sludge discharge port (11.4) is formed in one side of the side wall of the ash-water separator (11) which is positioned at the lower height of the bottom inclined plate (11.6); a filter layer (11.7) is arranged on the right side of the middle partition plate (11.5), and a separator water outlet (11.2) is formed in the side wall of the grey-water separator (11) above the filter layer (11.7).
4. The wet electric dust collector with the fouling prevention function for the slag smoldering system as recited in claim 1, wherein: circulating water replenishing openings (12.2) are formed in the tops of the circulating water tanks (12), clean water replenishing openings (9.2) are formed in the tops of the clean water storage tanks (9), and the circulating water replenishing openings (12.2) and the clean water replenishing openings (9.2) are connected with tap water.
5. The wet electric dust collector with the fouling prevention function for the slag smoldering system as recited in claim 2, wherein: a PH sensor (15) is arranged at the position, close to the sewage discharge outlet (4.1) of the ash bucket, of the bottom of the ash bucket (4), a temperature sensor (14) is arranged on one side, close to the ash bucket (4), below the linear spraying system (6), and the temperature sensor (14) is arranged on the top seal head (5); the outer side walls of the clean water storage tank (9) and the circulating water tank (12) are respectively wound with a heat tracing band (16), and a heat insulation layer is arranged outside the heat tracing band (16).
6. The wet electric dust collector with the fouling prevention function for the slag smoldering system as recited in claim 2, wherein: the size of an interface of the off-line nozzle (7.2) is 3/8 inches, the spraying flow rate is 9.5L/min, the spraying angle is 45 degrees, and the distance between the nozzle and the top end of the anode cylinder (2) is 1-1.5 meters; the size of the interface of the online nozzle (6.2) is 3/8 inches, the spraying flow is 15L/min, the spraying angle is 64-67 degrees, the distance between the nozzles is 0.8-1.2 meters, and the distance between the nozzle and the bottom end of the anode cylinder (2) is 0.8-1.2 meters.
7. The dust removal method of the anti-scaling wet electric dust remover based on the slag smoldering system of any one of claims 1 to 6, is characterized in that: after the dust-containing gas to be treated enters the wet electric dust collector and passes through the gap between the cathode wire (3) and the anode cylinder (2), the clean gas is discharged by the top seal head (5) after reaching the standard, and the dust is left on the surface of the anode cylinder (2); when dust on the surface of the anode cylinder (2) is accumulated to a certain degree, the off-line spraying system (7) is started to wash the surface of the anode cylinder (2); in the running process of the wet electric precipitator, the online spraying system (6) is always started, the clean water storage tank (9) supplies water for the online spraying system (6), the chemical adding device (8) and the heat tracing band (16) can adjust the PH value and the temperature value in the clean water storage tank (9), and after water in the online spraying system (6) is mixed with gas to be treated, the PH value and the temperature of the gas can be adjusted to prevent dust from scaling on the inner wall of equipment; after dust-containing wastewater discharged from the ash bucket (4) passes through the ash-water separator (11), dust and water are separated, the separated dust is discharged from the sludge discharge port (11.4) in the form of sludge, the separated water enters the circulating water tank (12) through the filtration of the filter layer (11.7), and after PH regulation and temperature regulation, the water in the circulating water tank (12) enters the off-line spraying system (7) under the action of the circulating water pump (13); temperature sensor (14) and PH sensor (15) of installation on the wet-type electrostatic precipitator can its inside temperature value of real-time supervision and PH value, works as when the inside temperature value of wet-type electrostatic precipitator and PH value deviate from the setting value, then change the power of heat tracing band (16) and change charge device (8) supply amount.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114558692A (en) * | 2022-01-24 | 2022-05-31 | 海城华宇镁砂有限公司 | Electric dust removal device for dead-burned magnesia kiln |
-
2021
- 2021-10-27 CN CN202111258206.0A patent/CN113908988A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114558692A (en) * | 2022-01-24 | 2022-05-31 | 海城华宇镁砂有限公司 | Electric dust removal device for dead-burned magnesia kiln |
| CN114558692B (en) * | 2022-01-24 | 2024-03-29 | 海城华宇镁砂有限公司 | Electric dust collector for dead burned magnesia kiln |
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Application publication date: 20220111 |