CN210434684U - Wet-type electrostatic precipitator - Google Patents

Abstract

The utility model provides a wet-type electrostatic precipitator, wherein insulation box (7) are installed on wet-type electrostatic precipitator barrel (1) outside top, wet-type electrostatic precipitator barrel (1) outside intermediate position installation negative pole fixer (3), wet-type electrostatic precipitator barrel (1) is inside from the top down installs top rinse-system (14) in proper order, go up gallows (6), wire electrode (5), deposit utmost point (4), gallows pull rod (15), gallows (2) and pretreatment system (13) down, it is 360mm regular hexagon's honeycomb holes to deposit utmost point (4) for a plurality of inscribed circle, wire electrode (5) are installed at the center of every honeycomb holes, the deviation is not more than 5mm, go up between gallows (6) and gallows (2) down and be connected through gallows pull rod (15) taut. The service life is longer, and the stability is better during the operation; the pre-purification system can directly purify large particles mixed in the flue gas and condense the small fog drops into large particles, so that the electrostatic system can directly and effectively adsorb and separate impurities, and the purpose of pretreatment is achieved.

Description

Wet-type electrostatic precipitator

Technical Field

The utility model belongs to the technical field of the environmental protection, a wet-type electrostatic precipitator is related to, multiple trades such as wide application in steel, coal industry.

Background

Under the increasingly strict environmental protection policy, the traditional industries with high energy consumption and high pollution, such as steel and coal chemical industry, urgently need an efficient dust remover to realize ultralow emission. The traditional wet-type electric dust collector is widely applied to the fields of steel, coal chemical industry and the like, and can realize that the emission concentration of particulate matters is less than 50mg/Nm³But less than 10mg/Nm cannot be achieved³Ultra-low emission requirements.

The wet electric dust collector adopts three structural forms, namely a concentric circle type, a tubular type and a honeycomb type. In any structure, the working principle is that high-voltage direct current is applied between a metal lead and a metal pipe wall or a polar plate to maintain an electric field which is enough to ionize gas so as to form a corona region between a cathode and an anode, and the purification effect is achieved. According to the electric field theory, positive ions are adsorbed on a corona electrode with negative electricity, negative ions are adsorbed on a precipitation electrode with positive electricity, and all ionized positive and negative ions are filled in the whole space between the corona electrode and the precipitation electrode; when the particles pass through the electric field, the particles adsorbed with negative ions and electrons move to the precipitation electrode under the action of coulomb force of the electric field to release charges, and are adsorbed on the precipitation electrode, so that the purpose of purifying the gas is achieved, which is generally called as charging phenomenon. When the amount of the particles adsorbed on the precipitation electrode is increased to be larger than the adhesive force of the precipitation electrode, the particles automatically flow downwards and are discharged from the bottom of the wet electric dust collector, and the purified gas leaves from the upper part of the wet electric dust collector and enters the next procedure. The gas discharge process is usually not conductive, but electrons inside the gas can gain enough energy to become free electrons to conduct under the action of a high-voltage electric field. In a uniform electric field, as the voltage increases, as long as any point therebetween is ionized, the gap between the two electrodes will be filled with charged ions immediately, the gas in the whole space is broken down, and the current sharply increases to form a spark discharge.

The traditional wet electric dust collector consists of the following components: a straight cylindrical shell, a tubular precipitation pole system and a set of tensioned wires are arranged in the straight cylindrical shell and used as corona poles, and auxiliary equipment such as continuous water supply, instruments, power supply control, power transmission and the like is also arranged in the straight cylindrical shell; the flue gas containing particulate matter enters the gas distribution plate of the electrostatic decoking device through the inlet on the shell below the precipitation electrode and is uniformly distributed. When the smoke passes through the electrode zone, the particles in the smoke are separated under the action of static electricity, the clean smoke leaves the electrostatic dust collector through an outlet at the upper part, and the separated particles are taken away by a water film flowing downwards after reaching the inner wall of the precipitation electrode and are finally discharged from the bottom of the equipment.

The electrode wire of the traditional wet-type electric dust collector is usually

The stainless steel bright wire is manufactured, the electrode wire is tensioned by the heavy hammer, the working efficiency of the equipment is reduced, the stability is reduced, and even the spark discharge phenomenon occurs; furthermore, the wet electric dust collector often has common faults such as corona wire breakage.

Along with the more and more strict requirements on environmental protection in recent years, the realization of ultra-low emission becomes a future trend, the requirement on the purification efficiency of the wet electric dust collector is improved, and the traditional wet electric dust collector cannot meet the requirement on the upgrading of related industries. There is a pressing need in these industries for a wet electrostatic precipitator that meets the process requirements.

SUMMERY OF THE UTILITY MODEL

Based on the needs of reality and production practice, the applicant invests a large amount of funds and long-term research, and provides a wet-type electric dust collector which meets the requirements of the industry on the wet-type electric dust collector, improves the purification efficiency of the traditional wet-type electric dust collector, and meets the environment-friendly requirement of ultralow emission.

The basis the technical scheme of the utility model, a wet-type electrostatic precipitator is provided, wherein insulation box 7 is installed on wet-type electrostatic precipitator barrel 1 goes up outside top, cathode fixing ware 3 is installed to wet-type electrostatic precipitator barrel 1 outside intermediate position, wet-type electrostatic precipitator barrel 1 is inside from the top down installs top rinse-system 14, go up gallows 6, wire electrode 5, precipitation utmost point 4, gallows pull rod 15, gallows 2 and pretreatment systems 13 down, precipitation utmost point 4 is a plurality of inscribed circle for 360mm regular hexagon's honeycomb holes, wire electrode 5 is installed at every honeycomb holes's center, the deviation is not more than 5mm, go up and to be connected through gallows pull rod 15 taut between gallows 6 and the gallows 2 down.

Wherein, the electrode wire 5 arranged inside the wet electric dust collector is a flexible snowflake prickle line. The electrode wire 5 comprises an upper fixing screw, a central pipe, a dizzy barbed plate nail, a rigid connecting piece and a lower fixing screw, and is not provided with a heavy hammer for hanging a barbed wire. The electrode wire 5 and the dizzy raising bur plate nail are in a snowflake shape and are fixed on the flexible titanium alloy polar line by hollow rivets at certain intervals. The flexible polar line of the snowflake bur plate nail is fixed, and the polar line is fixed on the upper part and the lower part of the cathode upper frame of the wet electric dust collector through the hanging clamping piece on the upper part and is fixed by a heavy hammer.

Preferably, the wet electric dust collector adopts snowflake bur plate nails. Furthermore, an insulation box 7, a cathode fixer 3, an upper hanger 6, a lower hanger 2 and a wire electrode 5 which are arranged on the wet-type electric dust collector barrel 1 form a rigid frame, and the wire electrode 5 is completely fixed on the wet-type electric dust collector barrel 1. Further, an upper hanger 6 is tensioned through 3-4 insulation boxes 7 at the top of the cylinder, a lower hanger 2 is fixed through a cathode fixer 3 on the side surface, and the upper hanger 6 and the lower hanger 2 are fixedly tensioned through a hanger pull rod 15.

Furthermore, a pretreatment system 13 is additionally arranged at the air inlet, the pretreatment system 13 consists of a baffle plate and a supporting device for fixing the baffle plate, and the baffle plate and the fixed baffle plate are arranged in parallel from wave crest to wave crest. According to the number of gaps of the air flow passing through the folded plates, the baffle plate and the fixed baffle plate are divided into a single-channel folded plate and a multi-channel folded plate; the distance between the folded plates between the baffle plate and the fixed baffle plate is changed according to the air flow speed from large to small; the included angle of the folded plate is 90-120 degrees; the wave height is generally 0.25-0.40 m.

Compared with the prior art, the utility model discloses barrel upper portion adopts flexonics to insulating case 7 among the wet-type electrostatic precipitator, and the lower part adopts negative pole fixer 3 taut towards 3 or 4 directions to 2 horizontal directions of gallows down, and the swing of upper and lower gallows can effectually be prevented like this, increases creepage distance, improves dust collection efficiency greatly. In addition the utility model discloses effectively solved traditional wet-type electrostatic precipitator's wire electrode discharge characteristic poor, the easy swing, easy broken string, purification efficiency is low, a great deal of problems such as operation unstability. The utility model discloses install purification system in advance additional, can directly purify the large granule that mix with in the flue gas to condense into the large granule with the droplet, be favorable to electrostatic system, directly adsorb the particulate matter effectively and deviate from and get off, reach the purpose of preliminary treatment.

Drawings

Fig. 1 is a schematic structural diagram of a wet-type electric precipitator according to the present invention.

Fig. 2 is a schematic structural diagram of a hanger pull rod and a precipitation pole in a wet electric dust collector.

Fig. 3 is a schematic structural diagram of an upper hanger and a precipitation pole in a wet electric dust collector.

Fig. 4 is a schematic structural diagram of a lower hanger and a precipitation pole in a wet electric dust collector.

Fig. 5 is a connection between an insulation box and an upper hanger in a wet electric precipitator.

Fig. 6 is a flexible connection between a cathode holder and a lower hanger in a wet electric precipitator.

Fig. 7 is a flexible connection between the wire electrode and the upper and lower hangers in the wet electric precipitator.

Fig. 8 is a schematic view of upper and lower horizontal hooks in a wet electric precipitator.

Fig. 9 is a structural view of an insulation box of the wet electric precipitator.

Fig. 10 is a structural view of an upper hanger in the wet electric precipitator.

Fig. 11 is a structural view of a precipitation pole in a wet electric precipitator.

Fig. 12 is a schematic view of wire electrodes in a wet electric precipitator.

Fig. 13 is an outline view of a wet electric precipitator prepurification system.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model discloses in, install insulating case 7 and negative pole fixer 3 on the wet-type electrostatic precipitator barrel 1, 1 inside sediment utmost point 4, go up gallows 6, lower gallows 2, wire electrode 5, pretreatment system 13, top rinse-system 14 and gallows pull rod 15 of installing in proper order of wet-type electrostatic precipitator barrel, sediment utmost point 4 is a plurality of regular hexagon's honeycomb holes, wire electrode 5 is installed at every honeycomb holes's center, the deviation is not more than 5mm, go up gallows 6 and lower gallows and be connected taut through gallows pull rod 15 between 2. The service life is longer, and the stability is better during the operation; the pre-purification system can directly purify large particles mixed in the flue gas and condense the small fog drops into large particles, so that the electrostatic system can directly and effectively adsorb and remove impurities to achieve the purpose of pretreatment

Wherein, the electrode wire 5 arranged inside the wet electric dust collector is a flexible snowflake prickle wire. The electrode wire 5 comprises a titanium alloy cathode wire, a snowflake bur plate and a hollow rivet. And 5, electrode wires 5, titanium alloy is used as a cathode wire, the snowflake bur plates are arranged at certain intervals and are fixed by hollow rivets. Form a polar line meeting the actual requirement length, the polar line is fixed with the weight through the overhead suspension fastener and the lower part. Furthermore, the wet-type electric dust collector adopts the winding prickle plate nail to control the length consistency and sharpness consistency of the polar line corona discharge tip, greatly improves the concentration of the corona discharge tip and reduces the corona discharge voltage. The insulation box 7, the cathode fixer 3, the upper hanger 6, the lower hanger 2 and the wire electrode 5 which are arranged on the wet-type electric precipitator cylinder 1 form a flexible frame, and the wire electrode 5 is completely fixed on the wet-type electric precipitator cylinder 1. Go up the gallows 6 and tighten through 3 ~ 4 insulation boxes 7 at barrel top, lower gallows 2 is fixed through the negative pole fixer 3 of side, and goes up and tighten through gallows pull rod 15 again between gallows 6 and the lower gallows 2. Additionally, a pretreatment system 13 is additionally arranged at the air inlet, the pretreatment system 13 mainly comprises a baffle plate and a supporting device for fixing the baffle plate, and the baffle plate and the fixed baffle plate can be arranged in parallel from wave crest to wave crest. According to the number of gaps of the air flow passing through the folded plates, the baffle plate and the fixed baffle plate are divided into a single-channel folded plate and a multi-channel folded plate; the distance between the folded plates between the baffle plate and the fixed baffle plate is changed according to the air flow speed from large to small; the included angle of the folded plate is 90-120 degrees; the wave height is generally 0.25-0.40 m.

Further, install insulating case 7 on wet-type electrostatic precipitator barrel 1 outside top, cathode fixing ware 3 is installed to the outside intermediate position of wet-type electrostatic precipitator barrel 1, top rinse-system 14 is installed from the top down to the inside from of wet-type electrostatic precipitator barrel 1, go up gallows 6, wire electrode 5, deposit utmost point 4, gallows pull rod 15, gallows 2 and pretreatment system 13 down, it is 360mm regular hexagon's honeycomb holes that deposit utmost point 4 for a plurality of inscribed circle, wire electrode 5 is installed at every honeycomb holes's center, the deviation is not more than 5mm, it is taut to connect through gallows pull rod 15 between gallows 6 and the gallows 2 down. The integral cathode system consisting of the insulation box, the cathode fixer, the upper hanger, the lower hanger and the flexible snowflake prickle wire ensures that the equipment runs more stably. The air inlet is additionally provided with a pre-purification system to achieve the effect of primary treatment.

The utility model discloses well used inscribed circle is the flexible snowflake prickle line of 360 mm's regular hexagon honeycomb, and the increase of honeycomb sectional area has improved wet-type electrostatic precipitator's efficiency, adopts the flexible snowflake prickle line of titanium alloy to do the negative pole line in addition, and corrosion resistance improves greatly, and snowflake prickle plate is snowflake form simultaneously, and discharge performance improves greatly, and whole dust collection efficiency also improves greatly. From the aspect of cost, the cost of the flexible snowflake prickle wire is greatly reduced.

In addition, compared with the traditional electrode wire, the improved flexible snowflake bur wire has better electrical performance, longer service life and better stability during operation. Adopt novel prickle line to form the wet-type electrostatic precipitator of flexible cathode system, job stabilization, efficiency is higher. The pre-purification system can directly purify large particles mixed in the flue gas and condense the small fog drops into large particles, so that the electrostatic system can directly and effectively adsorb and separate the particles, and the purpose of pretreatment is achieved.

Specifically, the utility model discloses a wet-type electrostatic precipitator increases in inlet opening departmentThe pre-purification system 13 is used for carrying fine liquid droplets in a gas phase, when the fine liquid droplets pass through the pre-purification system, the fine liquid droplets touch the pre-purification system device, are adhered or adsorbed, and are repeatedly adsorbed for many times, so that the tiny droplets agglomerate and coalesce into large droplets, the droplets move downwards in the pre-purification system under the action of gravity, and meanwhile continuously adsorb the droplets carried in the gas, and the large droplets flow to the bottom of the pre-purification system to fall off by the gravity of the droplets. In the patent, the dust content of the wet electric dust collector after treatment is not higher than 10mg/Nm³Is far higher than the traditional wet-type electric dust collector by 50mg/Nm³The processing power of (1).

In practice, the corona electrode of the wet electric dust collector works in a high-temperature flue gas environment, and various chemical components mixed in the flue gas severely corrode the electrode wire of the corona electrode. The corroded electrode wire is easy to break under stress at the head and the tail of the electrode wire after a period of time, and arc discharge is easy to occur between the two electrodes if the distance between the two electrodes is less than a safe distance so as to blow the corona electrode. Based on prior art's problem, the main reason that wet-type electrostatic precipitator common trouble is the corona wire break promptly, the utility model discloses wet-type electrostatic precipitator changes traditional material wire electrode into titanium alloy material wire electrode. After the titanium alloy electrode wire is changed, the corrosion resistance and the tensile strength are greatly enhanced. Therefore, the electrode wire is straightened and fixed on the heavy hammer in the process of installing the electrode wire, so that the corona wire is fixed at the center of the precipitation electrode, and the straightness tolerance and the center tolerance of the corona wire are within the allowable value range. In addition, the electric field needs to be cleaned regularly, particles trapped in the electric field are removed, electric field discharge factors are reduced, the service life of the electrode wire can be prolonged, the smoothness of a channel is kept, and the effect of removing the particles is better. The electric field adopts constant current source high voltage direct current power supply, so that the failure rate of the device is low, the maintenance amount is greatly reduced, the operation is reliable, and the particles in the flue gas can be efficiently removed.

The utility model discloses a wet-type electrostatic precipitator has following characteristics:

1. the composition of the body is as follows:

1) cylinder 1

2) Precipitation electrode 4

3) Upper hanger 6 and lower hanger 2

4) Electrode wire 5

5) Insulating box 7 and cathode holder 3

6) Pre-cleaning system 13

7) Top flushing system 14

8) Hanger pull rod 15

2. Material selection

The cylinder 1 of the wet electric dust collector is made of carbon steel, and the wall thickness is 6-12 mm. The precipitation electrode 4 is made of carbon steel or stainless steel, and the thickness of the plate is 2-4 mm; the electrode wire 5 adopts a titanium alloy flexible snowflake prickle wire.

3. Precipitation electrode 4

Is composed of a plurality of honeycomb tubes, the inscribed circles of the anode tubes are all

Each group of honeycomb tube bundles has perfect integrity, high strength and high concentricity and parallelism of the anode tubes.

4. Cathode system

The cathode system comprises an upper hanger 6, a lower hanger 2, a wire electrode 5 and a cathode fixer 3; the electrode wire 5 adopts a unique flexible snowflake prickle wire of the company, thereby reducing the corona voltage and greatly improving the current density of the wire. The electrode wire 5 is of a multi-section assembly structure and is convenient to disassemble, assemble and replace. Meanwhile, the lower hanger 2 adopts the patent technology of 'integral cathode line fixed frame', and completely meets the special requirement on the stability of a cathode system under high electric field gas velocity.

5. Insulating box 7 and cathode holder 3

Wet-type electrostatic precipitator is 1 power supply district, and insulating case 73 ~ 4 sets are established at the top, and wherein there is an insulating case that takes the lead wire. The lower part is provided with 33-4 sets of cathode holders. The insulating box 7 and the cathode fixer 3 are externally insulated by rock wool, so that the insulating property is good, and the insulating property of the insulator is ensured.

6. Top flushing system 14

The top of the wet-type electric dust collector body is provided with a washing device which is washed by clean water. And periodically removing the particles adhered to the precipitation electrode and the corona wire.

7. The hanging bracket pull rod 15 and the precipitation pole 4 in the wet electric dust collector are schematically shown in fig. 2.

8. The upper hanger 6 and the precipitation pole 4 in the wet electric dust collector are schematically shown in fig. 3.

9. The structure schematic diagram of the lower hanger 2 and the precipitation pole 4 in the wet electric dust collector is shown in fig. 4.

10. 3 ~ 4 are established to insulating case 7 according to the equipment model, and go up the connection between gallows 6. As shown in fig. 5.

11. The cathode fixer 3 is provided with 3-4 cathodes according to the equipment model, and is flexibly connected with the lower hanging bracket 2. Lower gallows 2 can be wobbling in the original wet-type electrostatic precipitator, has increased negative pole fixer 3 in this picture, strains lower gallows 2 from 3 ~ 4 directions, can avoid the swing of lower gallows 2 like this, increases creepage distance, improves dust collection efficiency, as shown in fig. 6, fig. 6 is the flexonics between negative pole fixer and the lower gallows in the wet-type electrostatic precipitator.

12. The precipitation electrode 4 is a regular hexagon honeycomb precipitation electrode tube and has the characteristics of compact structure, high space utilization rate and no electric field blind area.

13. The electrode wire 5 is a flexible snowflake prickle wire and is flexibly connected with the upper hanging bracket 6 and the lower hanging bracket 2. As shown in fig. 7, fig. 7 illustrates the flexible connection between the wire electrode and the upper and lower hangers in the wet electric dust collector.

As shown in figure 8, one end of the upper transverse hook is fixed on the lath of the upper hanger through an adjusting nut, and the other end is fixed at the upper end of the flexible snowflake prickle line. In a similar way, one end of the lower transverse hook is fixed on the lath of the lower hanging bracket through the adjusting nut as shown in fig. 8, and the other end of the lower transverse hook is fixed at the lower end of the flexible snowflake prickle wire, so that the flexible snowflake prickle wire is vertically fixed in the honeycomb tube.

14. The electrode wire 5 is a flexible snowflake prickle wire, and compared with the traditional electrode wire, the discharge characteristic is low in corona inception voltage, high in working voltage and working current, and superior to the traditional electrode wire in all aspects of performances such as service life and the like.

15. The pre-purification system 13 can directly purify large particles mixed in the flue gas and condense the small fog drops into large particles, so that an electrostatic system is facilitated, the particles are directly and effectively adsorbed and separated, and the purpose of pretreatment is achieved. The pre-purification system has the characteristics of small pressure drop, large specific surface area and high demisting efficiency.

In addition, according to the size of the wet-type electric dust collector, the cylinder 1 of the wet-type electric dust collector is made of steel and has a diameter of 1.5m to 8m and a height of 10m to 15m, and the diameter of the process pipeline is far smaller than that of the cylinder 1 of the wet-type electric dust collector, so that the upper part of the cylinder 1 of the wet-type electric dust collector is provided with a tapered reducing structure.

As shown in figure 1, install insulating case 7 and negative pole fixer 3 on the wet-type electrostatic precipitator barrel 1, wet-type electrostatic precipitator barrel 1 internally mounted has precipitation utmost point 4, goes up gallows 6, lower gallows 2, wire electrode 5, pre-purification system 13, top rinse-system 14 and gallows pull rod 15, and precipitation utmost point 4 is a plurality of regular hexagon's honeycomb holes, and wire electrode 5 is installed at the center of every honeycomb hole, and the deviation is not more than 5 mm. The upper hanger 6 and the lower hanger 2 are connected and tensioned through a hanger pull rod 15. The electrode wire 5 is a flexible snowflake prickle line and is fixed by a heavy hammer. Preferably, wet-type electrostatic precipitator wire 5 contains upper portion set screw, center tube, dizzy burr board nail, flexonics spare, lower part set screw. The electrode wire 5 of the wet electric dust collector comprises a titanium alloy cathode wire, a snowflake bur plate and a hollow rivet. Titanium alloy is used as a cathode wire, and the snowflake bur plates are arranged at certain intervals and fixed by hollow rivets. Form a polar line that satisfies actual need length, polar line is fixed in wet-type electrostatic precipitator's negative pole upper and lower frame through the fastener that hangs on upper portion and weight for the lower part, can the circular telegram work. The wet-type electrostatic precipitator adopts flexible snowflake prickle lines, simply and effectively controls the length consistency and sharpness consistency of polar line corona discharge tips, greatly improves the concentration of the polar line corona discharge tips, reduces corona voltage, improves corona current, and obviously improves the linear current density of polar lines.

In addition, the position about 1 meter away from the bottom of the cylinder body 1 of the wet electric dust collector is also provided with a sewage discharge hole 8, an air inlet hole 9, an air outlet hole 12, a manhole 11, a plurality of national standard explosion-proof holes 10 and other various process pipe orifices which are arranged according to the national standard.

As shown in fig. 9, the insulation box 7 is composed of an inner cylinder 7-5, an outer cylinder 7-4 and an insulator fixing component 7-1, wherein a high-voltage insulator 7-2 for isolating an anode and a cathode is installed in the insulation box 7, the high-voltage insulator 7-2 isolates the anode and the cathode of the wet electric precipitator, the number of the insulation boxes 7 is generally 3-4 according to the size of the wet electric precipitator, the insulation box 7 is connected with the upper hanger 6 through a pull rod 7-6 made of a steel pipe with certain strength, and the pull rod 7-6 is fixed with the upper hanger 6 through bolts to form flexible and stable connection. In order to facilitate maintenance, the insulating box 7 is provided with a hand hole 7-3. The structure and the principle of the cathode fixer 3 are the same as those of the insulating box 7, 3-4 cathode fixers are arranged according to different sizes of wet-type electric dust collector equipment models, the cathode fixer and the lower hanging bracket 2 are connected through a pull rod made of a steel pipe with certain strength, and the pull rod and the lower hanging bracket 2 are connected flexibly and stably through bolts.

Furthermore, an insulation box 7, a cathode fixer 3, an upper hanger 6, a lower hanger 2 and a wire electrode 5 which are arranged on the wet-type electric dust collector barrel 1 form a flexible frame, and the wire electrode 5 is completely fixed on the wet-type electric dust collector barrel 1. Wherein, go up gallows 6 taut through 3 ~ 4 insulation boxes 7 at barrel top, lower gallows 2 is fixed through the negative pole fixer 3 of side, and goes up and is fixed taut through gallows pull rod 15 again between gallows 6 and the lower gallows 2, avoids the swing of gallows 6, lower gallows 2 like this to form a flexible frame.

The upper hanger 6 and the lower hanger 2 have the same structure as shown in fig. 10. The electrode wire rack is made of flat steel with certain strength, a plurality of waist-shaped holes are designed on the transversely arranged battens 6-2 and used for installing and adjusting electrode wires 5, and the vertically arranged supporting strips 6-1 penetrate through the prefabricated square holes of the transversely arranged battens 6-2 to form a flexible integral frame structure.

The precipitation pole 4 shown in fig. 11 is composed of a regular hexagonal steel honeycomb tube bundle 4-1 and a ring plate 4-2. The ring plate 4-2 is sleeved on the honeycomb tube bundle 4-1, so that the honeycomb tube is fixed in a circular manner, and air flow is conveniently and uniformly distributed.

A flexible snowflake prickle wire as shown in figure 12. The electrode wire 5 is fixed with the upper hanger 6 and the lower hanger 2 through bolts and is flexibly connected with the upper hanger 6 and the lower hanger 2. The external schematic view of the wire electrode 5 in the wet electric dust collector is shown in fig. 12.

In other embodiments, the novel electrode wire 5 comprises a titanium alloy cathode wire, a snowflake bur plate, a blind rivet. Titanium alloy is used as a cathode wire, and the snowflake bur plates are arranged at certain intervals and fixed by hollow rivets. Form a polar line that satisfies actual need length, polar line is fixed in wet-type electrostatic precipitator's negative pole upper and lower frame through the fastener that hangs on upper portion and weight for the lower part, can the circular telegram work.

Compared with the traditional electrode wire which is generally made of stainless steel wires and has no discharge tip, the electrode wire in the form has low pole wire strength, is easy to swing to cause arc discharge under high flue gas flow rate, and has high corona starting voltage and extremely low corona starting current. The utility model discloses a flexible snowflake prickle line of titanium alloy is effectual has controlled most advanced length uniformity, the acutance uniformity of polar line corona discharge, improves corona discharge most advanced concentration by a wide margin, reduces corona voltage, improves corona current, and polar line current density is showing and is improving.

As shown in fig. 13, in the pre-purification system 13, the distance between the two plates is 30-50 mm, liquid drops in the flue gas flow in a zigzag manner in the baffle plate and continuously collide with the wall surface to be condensed into large liquid drops, and then the liquid drops continuously increase and finally slide down along the blades of the pre-purification system under the action of gravity until reaching the bottom of the cylinder, so that the liquid drops and a small amount of dust carried by the flue gas are removed, the water carried by the flue gas is reduced, the vibration of a fan is prevented, and the purpose of pre-treatment is achieved. The blades are the most basic and important elements constituting the pre-purification system, and the performance of the blades has a crucial influence on the operation of the whole pre-purification system. The pre-purification system has the characteristics of small pressure drop, large specific surface area and high demisting efficiency.

The air inlet is additionally provided with the pretreatment system 13 which can directly purify large particles mixed in the flue gas and condense the small fog drops into large particles, thereby being beneficial to an electrostatic system, directly and effectively adsorbing and separating the particles and achieving the purpose of pretreatment. The pretreatment system 13 is mainly composed of a baffle plate and a supporting device for fixing the baffle plate, the folded plates are intersected at a certain angle to form a fold line-shaped thin-wall part, wherein the high folded plate is an outer frame group and is provided with an independent supporting structure, the low folded plate is an inner core group and is also provided with an independent supporting structure, the outer frame group and the inner core group are provided with the folded plates, and the folded plates can be arranged in parallel from wave crest to wave crest and are called as homowave folded plates. The air flow is divided into single-channel folded plates and multi-channel folded plates according to the number of gaps between the folded plates. The distance between the folded plates is changed from large to small according to the air flow speed and the dust fog concentration. The included angle of the folded plate is 90-120 degrees. The wave height is generally 0.25-0.40 m.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the embodiments of the present invention are all covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (9)

1. The wet-type electric precipitator is characterized in that an insulating box (7) is installed at the top end of the outer portion of a barrel (1) of the wet-type electric precipitator, a cathode fixing device (3) is installed at the middle position of the outer portion of the barrel (1) of the wet-type electric precipitator, a top flushing system (14), an upper hanger (6), electrode wires (5), a precipitation pole (4), a hanger pull rod (15), a lower hanger (2) and a pretreatment system (13) are sequentially installed inside the barrel (1) of the wet-type electric precipitator from top to bottom, the precipitation pole (4) is honeycomb holes with a plurality of inscribed circles being 360mm regular hexagons, one electrode wire (5) is installed at the center of each honeycomb hole, the deviation is not more than 5mm, and the upper hanger (6) and the lower hanger (2) are connected and tightened through the hanger pull rod (; the electrode wire (5) arranged in the wet electric dust collector is a flexible snowflake prickle wire.

2. The wet electric precipitator according to claim 1, wherein the wire electrode (5) comprises an upper fixing screw, a central tube, a stunning plate nail, a rigid connector and a lower fixing screw, and there is no weight for hanging the bur line.

3. The wet electric dust collector of claim 1, wherein the wire electrode (5) and the corona-raising bur plate nail are in a snowflake shape and are fixed on the flexible titanium alloy polar line by hollow rivets at a certain interval.

4. The wet electric dust collector of claim 1, wherein a flexible polar line of the snowflake bur plate nail is fixed, and the polar line is fixed on the upper part and the lower part of the cathode upper frame of the wet electric dust collector by a hanging fastener on the upper part and is fixed by a heavy hammer.

5. The wet electric dust collector of claim 4, wherein the wet electric dust collector adopts snowflake bur plate nails.

6. The wet electric dust collector of claim 1, wherein the insulation box (7), the cathode holder (3), the upper hanger (6), the lower hanger (2) and the wire electrode (5) mounted on the wet electric dust collector cylinder (1) form a rigid frame, and the wire electrode (5) is completely fixed on the wet electric dust collector cylinder (1).

7. The wet electric dust collector of claim 6, wherein the upper hanger (6) is tensioned through 3-4 insulation boxes (7) at the top of the cylinder, the lower hanger (2) is fixed through a cathode fixer (3) at the side, and the upper hanger (6) and the lower hanger (2) are fixed and tensioned through a hanger pull rod (15).

8. A wet electrostatic precipitator according to claim 1, wherein a pre-treatment system (13) is added at the air inlet, the pre-treatment system (13) is formed by a baffle plate and a supporting device for fixing the baffle plate, and the baffle plate and the fixing baffle plate are installed in parallel wave crest to wave crest.

9. The wet electric dust collector of claim 8, wherein the baffle plate and the fixed baffle plate are divided into a single-channel baffle plate and a multi-channel baffle plate according to the number of gaps between the air flow passing through the baffle plate; the distance between the folded plates between the baffle plate and the fixed baffle plate is changed according to the air flow speed from large to small; the included angle of the folded plate is 90-120 degrees; the wave height is generally 0.25-0.40 m.

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