CN219850135U - Electrostatic dust collector of biomass energy steam generator - Google Patents

Abstract

The utility model discloses an electrostatic dust collection device of a biomass energy steam generator, which comprises: the base is provided with a collecting area; the bottom of the purifying chamber is connected with the collecting area, the top of the purifying chamber is a smoke purifying chamber, the bottom of the purifying chamber is provided with a gas inlet, and the smoke purifying chamber is provided with a clean gas outlet; the insulation sleeve is inserted into the smoke purifying chamber and used for being connected with a high-voltage cable in a penetrating way, and the high-voltage cable is connected with a corona wire serving as a discharge electrode; a dust collecting part as a dust collecting electrode, which is matched with the corona wire for use; the cleaning chamber has means for incorporating water mist into the flue gas to be cleaned entering the cleaning chamber. According to the utility model, the corona wire and the dust collection part are matched to form the ionization region, so that the smoke to be purified can be uniformly charged (negative ions) by uniform fog drops, namely dust particles in the smoke to be purified are electrostatically coagulated by the dust collection part, and the probability of adsorption filtration and coagulation of the dust particles is higher.

Description

Electrostatic dust collector of biomass energy steam generator

Technical Field

The utility model relates to the technical field of smoke dust removal assistance, in particular to an electrostatic dust removal device of a biomass energy steam generator.

Background

A biomass steam generator is a steam generator using biomass energy as fuel. The working principle is that biomass energy is combusted, heat energy is produced after combustion, the heat energy is converted, the heat energy is transferred to water in the liner, the water temperature is increased, and finally steam is produced after the hot water is gasified, the biomass is generally smaller in volume density and loose in structure, so that fuel is convenient to ignite and burn out, but floating ignition and dust raising are easy to occur under the condition of strong air supply, a water film, a granite dust remover, a bag type dust remover (or an electric bag dust remover), an electrostatic dust remover and the like are required to be matched, and a water film is formed on the surface of a dust collecting electrode in a water spraying or overflow water mode for a wet electrostatic dust remover in the electrostatic dust remover, so that the electrostatic dust remover for removing dust on the electrode plates is realized.

The wet ash removal can avoid the re-flying of the precipitated dust, and achieves high dust removal efficiency. Because of no rapping device, the operation is more stable, but its deashing mode generally adopts online single line to spray the technology in succession, need set up special water treatment system, spray water is through strong sodium oxide aqueous solution neutralization back cyclic utilization, this kind of deashing mode is higher to the nozzle performance requirement, and because the position that the nozzle set up also makes the maintainer also unable intuitionistic confirm whether it is blockked up, can't carry out real-time supervision to the steady running state of nozzle, simultaneously, generally only set up the nozzle above the polar plate, the nozzle sprays water and forms the water film, in case the nozzle at top blocks up or the water film can't cover the anode plate completely, the anode plate does not have alkaline water film protection, the corruption will be unavoidable, and scale deposit easily, influence follow-up use.

In order to solve the problem of easy scaling and influence on subsequent use, the following problems are found by searching: CN218590819U, named as a biomass energy steam generator electrostatic dust collector, through two groups of curtain type water curtain nozzles, the dust collection operation can be continuously performed under the condition that the anode dust collecting plate is not corroded and scaled after the nozzles are blocked, and the water film covering the inner surface of the anode dust collecting plate is not broken or opened, so that the problem that the anode dust collecting plate is corroded and scaled by flue gas is avoided.

However, when the electrostatic dust collector is used, the cathode corona wire is positioned at the central axis of the anode dust collecting plate, and the flue gas entering the anode dust collecting plate moves towards the anode dust collecting plate, but the flue gas also moves towards the upper smoke purifying chamber due to the existence of air flow and finally is discharged through the smoke outlet, so that dust and particulate matters in the flue gas are easily taken away, and the dust collecting effect of the anode dust collecting plate needs to be improved.

Disclosure of Invention

The utility model aims to provide an electrostatic dust collection device of a biomass energy steam generator, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

an electrostatic precipitator for a biomass energy steam generator, comprising:

the base is provided with a collecting area;

the bottom of the purifying chamber is connected with the collecting area, the top of the purifying chamber is a smoke purifying chamber, the bottom of the purifying chamber is provided with a gas inlet, and the smoke purifying chamber is provided with a clean gas outlet;

the hard insulating sleeve is inserted into the smoke purifying chamber and used for being connected with a high-voltage cable in a penetrating way, and the high-voltage cable is connected with a corona wire serving as a discharge electrode;

the dust collecting part is used as a dust collecting electrode, is positioned in the collecting area and is matched with the corona wire for use;

the flue gas to be purified enters the purification chamber from the gas inlet to be purified into clean flue gas and is discharged from the clean gas outlet, and the purification chamber is internally provided with a (atomization) component for doping water mist into the flue gas to be purified entering the purification chamber.

Further, the means comprises an atomizer head at the top of the collection region.

Further, the bottom of the purifying chamber is provided with an ash collecting hopper, the ash collecting hopper is connected with the collecting area, and the gas inlet is installed on the ash collecting hopper in a penetrating way.

Further, the dust collection part comprises a tubular plate and a circular grid plate positioned in the tubular plate.

Further, the number of the round grid plates is at least two, and the mesh sizes of the upper round grid plate and the lower round grid plate are different.

Further, the atomizer is mounted at the top of the collection zone by an insulated bracket.

Further, the support includes the horizontal support and installs the L shape support on the horizontal support, the horizontal support runs through the base, atomizer installs on the horizontal support, the upper end of L shape support is used for connecting fixed corona wire.

Further, a nozzle is sleeved at the end part of the insulating sleeve positioned in the smoke purifying chamber, and the nozzle is connected with an external water pipe.

Further, the nozzle is provided with a through hole for sleeving the insulating sleeve and passing through the corona wire, the water pipe penetrates through the insulating sleeve to the outside of the smoke purifying chamber, and the outer side of the nozzle is provided with a circle of spray holes.

Further, the high-voltage cable is connected with a high-voltage power supply, the high-voltage power supply is connected with an alternating current input, and the purifying chamber is grounded through a grounding wire.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, when the flue gas to be purified enters the position above the atomizing spray head from the gas inlet, the atomizing spray head is arranged to spray mist droplets with uniform size to the flue gas to be purified and uniformly mix the mist droplets with the flue gas to be purified, the mist droplets move to the collecting area after being mixed, and when the mist droplets pass through the dust collecting part in the collecting area, the flue gas to be purified can be uniformly charged (negative ions) due to the fact that the corona wire is matched with the dust collecting part, and the water mist can increase the charge quantity, so that dust (dust or dust) particles in the flue gas to be purified are electrostatically condensed by the dust collecting part, and the probability of adsorption filtration and condensation formed by the dust particles is larger than that of the prior art.

The dust collecting part comprises two parts, wherein a tubular plate (a cylinder) is used as a dust collecting electrode, at least more than one circular grid plate is arranged, dust particles in the flue gas to be purified can be collected and adsorbed in a further auxiliary mode through the different sizes of the circular grid plates and the meshes, and the whole dust collecting part is provided with an electrostatic coagulation and dynamic coagulation dust removing mechanism, so that the dust collecting part has relatively high dust removing efficiency/effect.

According to the utility model, as the water mist is sprayed into the flue gas to be purified, the humidity of oxygen is increased, when the flue gas moves to the dust collecting part, a water film with a certain degree of integrity can be formed on the dust collecting part, and under the action of gravity, dust flows down along with the water film, and the water consumption can be saved by atomization. Can regularly spray a certain amount of water to the clean room, deliver water to the nozzle through the water pipe, the nozzle is spouted water through round orifice to increase dust collection portion and form the water film purpose, can spray dust collection portion simultaneously, make the dust granule that adheres to it can be sprayed down, falls into the collecting region along with the dust collection bucket.

According to the utility model, through the insulating bracket: the horizontal bracket can be provided with an atomizing nozzle, and the bottom end of the corona wire is connected to the upper end of the L-shaped bracket, so that a heavy hammer which is required to be equipped for the corona wire in the prior art can be omitted. Can make the corona wire steadily not take place to rock by a wide margin after the clean room lets in the flue gas to ensure that the operation (discharge ionization) is stable, save the weight and also make the clean room bottom vacate a part space, be convenient for increase the air input of flue gas.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model.

Fig. 2 is a schematic view of the mounting and mating of the insulating sleeve and nozzle of the present utility model.

In the figure: 1-base, 2-clean room, 3-clean smoke room, 4-ash collecting hopper, 5-gas inlet, 6-collecting area, 7-cross support, 8-atomizer, 9-L shape support, 10-insulating sleeve, 11-corona wire, 12-high voltage cable, 13-high voltage power supply, 14-AC input, 15-clean gas outlet, 16-water pipe, 17-nozzle, 18-dust collecting part, 19-tubular plate, 20-round grid plate, 21-mesh, 22-water pipe, 23-spray hole, 24-grounding wire.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the terms "upper end," "lower end," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like indicate an azimuth or a positional relationship based on that shown in the drawings, merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "sleeved," "connected," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 2, the present utility model provides a technical solution:

an electrostatic precipitator for a biomass energy steam generator, comprising:

a base 1, wherein a collecting area 6 is arranged on the base 1;

the purifying room 2, the bottom of the purifying room 2 is connected with the collecting area 6, the top of the purifying room 2 is a smoke purifying room 3, the bottom of the purifying room 2 is provided with a gas inlet 5, and the smoke purifying room 3 is provided with a clean gas outlet 15;

a hard insulating sleeve 10, wherein the insulating sleeve 10 is inserted in the smoke purifying chamber 3 and used for being connected with a high-voltage cable 12 in a penetrating way, and the high-voltage cable 12 is connected with a corona wire 11 serving as a discharge electrode;

a dust collection part 18 as a dust collection electrode, wherein the dust collection part 18 is positioned in the collection area 6 and is matched with the corona wire 11 for use;

the flue gas to be purified enters the purification chamber 2 from the gas inlet 5 to be purified into clean flue gas, and is discharged from the clean gas outlet 15, and the purification chamber 2 is internally provided with a component for doping the flue gas to be purified entering the purification chamber 2 with water mist.

Specifically, the component includes the atomizer 8 that is located collection district 6 top department, atomizer 8 is located collection district 6 top department through insulating support mounting, the support includes horizontal support 7 and installs the L shape support 9 on horizontal support 7, horizontal support 7 runs through base 1, atomizer 8 installs on horizontal support 7, the upper end of L shape support 9 is used for connecting fixed corona wire 11.

In this embodiment, as shown in fig. 1, when the flue gas to be purified enters the position above the atomizing nozzle 8 through the gas inlet 5, by setting the atomizing nozzle 8, mist droplets with uniform size are formed after atomizing water and sprayed to the flue gas to be purified and uniformly mixed with the flue gas to be purified, and the mixed gas moves towards the collecting area 6, and when passing through the dust collecting part 18 in the collecting area 6, the corona wire 11 and the dust collecting part 18 form an ionization area due to the cooperation of the corona wire 11 and the dust collecting part 18, the uniform mist droplets enable the flue gas to be uniformly charged (negative ions), and the water mist can increase the charge, so that dust (dust or dust) particles in the flue gas to be purified are electrostatically coagulated by the dust collecting part 18, and the probability of adsorption filtration and coagulation formed by the dust particles is larger than that of the prior art.

Specifically, the dust collecting part 18 includes a tubular plate 19 and at least two circular grid plates 20 positioned in the tubular plate 19, and the mesh openings 21 of the upper and lower circular grid plates 20 are different in size.

In this embodiment, the dust collecting part 18 includes two parts, except for the tubular plate 19 (which is a cylinder) as the dust collecting pole, and at least more than 2 circular grid plates 20 are provided, and dust particles in the flue gas to be purified can be collected and adsorbed by different sizes of the circular grid plates 20 and the mesh holes 21, so that the electrostatic coagulation and dynamic coagulation dust removing mechanism is increased in the whole dust collecting part 18, and the dust removing efficiency is relatively high.

Specifically, the end part of the insulating sleeve 10 positioned in the smoke purifying chamber 3 is sleeved with a nozzle 17, the nozzle 17 is connected with an external water pipe 16, the nozzle 17 is provided with a through hole 22 for the insulating sleeve 10 to be sleeved and the corona wire 11 to pass through, the water pipe 16 passes through the insulating sleeve 10 to penetrate out of the smoke purifying chamber 3, and the outer side of the nozzle 17 is provided with a circle of spray holes 23. The bottom of the purifying chamber 2 is provided with an ash collecting hopper 4, the ash collecting hopper 4 is connected with a collecting area 6, and the gas inlet 5 is penetratingly arranged on the ash collecting hopper 4.

In this embodiment, because water mist is sprayed into the flue gas to be purified, the humidity of oxygen is increased, when the flue gas moves to the dust collecting part 18, a complete water film is formed on the dust collecting part 18 to a certain extent, and under the action of gravity, dust flows down along with the water film, and water consumption can be saved by atomization. As shown in fig. 2, a certain amount of water can be sprayed into the purifying chamber 2 at regular time, the water is conveyed to the nozzle 17 through the water pipe 16, the nozzle 17 sprays the water through a circle of spray holes 23 so as to increase the purpose of forming a water film by the dust collecting part 18, and meanwhile, the dust collecting part 18 can be sprayed, so that dust particles attached to the dust collecting part can be sprayed and blown down, and fall into the collecting area 6 along with the dust collecting hopper 4.

Specifically, the high-voltage cable 12 is connected to a high-voltage power supply 13, the high-voltage power supply 13 is connected to an ac input 14, and the clean room 2 is grounded through a ground line 24.

In this embodiment, the ac input 14 supplies power to the high-voltage power supply 13, so that the high-voltage power supply 13 generates high-voltage dc to work together with the discharge electrode and the dust collecting electrode to form an electrostatic field for ionization of flue gas, and dust is adsorbed by the dust collecting electrode, thereby achieving the purpose of separating dust particles from gas. To ensure safety, ground is protected by ground wire 24.

In this embodiment, as shown in fig. 1, the insulating bracket is used to: the transverse bracket 7 can be provided with an atomizing nozzle 8, and the bottom end of the corona wire 11 is connected to the upper end of the L-shaped bracket 9, so that a heavy hammer which is required to be equipped for the corona wire 11 in the prior art can be omitted. The corona wire 11 can be stabilized against shaking greatly after the smoke is introduced into the purifying chamber 2, so that the running (discharge ionization) stability is ensured, a part of space is vacated at the bottom of the purifying chamber 2 by omitting a heavy hammer, and the air inflow of the smoke is conveniently increased.

When the flue gas to be purified is required to be dedusted in use, the flue gas to be purified is introduced through the gas inlet 5, then water is atomized through the atomization nozzle 8 to form mist drops with uniform size, the mist drops are sprayed to the flue gas to be purified and are uniformly mixed with the flue gas to be purified, the mist drops move to the collecting area 6 after being mixed, the high-voltage power supply 13 generates high-voltage direct current to cooperatively work the discharge electrode and the dust collecting electrode to form an electrostatic field for ionization of the flue gas, so that dust (dust or dust) particles in the flue gas to be purified can be electrostatically coagulated by the dust collecting part 18, the flue gas can move to the dust collecting part 18 after being atomized to enable the dust collecting part 18 to form a complete water film to a certain extent, a certain amount of water can be sprayed into the purifying chamber 2 at regular time, the water is delivered to the nozzle 17 through the water pipe 16, the nozzle 17 is sprayed out through the circle of spray holes 23, the dust collecting part 18 can be sprayed to form the water film, and meanwhile, the dust particles attached to the dust collecting part 18 can be sprayed and blown down, the dust particles can fall into the collecting area 6 along with the dust collecting pipe 4 and fall into the collecting area 6, and the purified flue gas can be discharged through the gas outlet 15 of the purifying chamber 3.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. An electrostatic dust collection device for a biomass energy steam generator, which is characterized by comprising:

a base (1), wherein a collecting area (6) is arranged on the base (1);

the purifying room (2), the bottom of the purifying room (2) is connected with the collecting area (6), the top of the purifying room (2) is a smoke purifying room (3), the bottom of the purifying room (2) is provided with a gas inlet (5), and the smoke purifying room (3) is provided with a clean gas outlet (15);

a hard insulating sleeve (10), wherein the insulating sleeve (10) is inserted into the smoke purifying chamber (3) and is used for being connected with a high-voltage cable (12) in a penetrating way, and the high-voltage cable (12) is connected with a corona wire (11) serving as a discharge electrode;

a dust collection part (18) used as a dust collection electrode, wherein the dust collection part (18) is positioned in the collection area (6) and is matched with the corona wire (11) for working;

the flue gas to be purified enters the purifying chamber (2) from the gas inlet (5) to be purified into clean flue gas, and is discharged from the clean gas outlet (15), and the purifying chamber (2) is internally provided with a component for doping the flue gas to be purified entering the purifying chamber (2) with water mist.

2. An electrostatic precipitator for biomass energy steam generators according to claim 1, in which the said means comprise an atomizer (8) at the top of the collection zone (6).

3. The electrostatic dust collection device of the biomass energy steam generator according to claim 1, wherein the bottom of the purifying chamber (2) is provided with an ash collecting hopper (4), the ash collecting hopper (4) is connected with the collecting area (6), and the gas inlet (5) is penetratingly arranged on the ash collecting hopper (4).

4. An electrostatic precipitator for biomass energy steam generators according to claim 1, in which the dust collection portion (18) comprises a tubular plate (19) and a circular grid plate (20) located within the tubular plate (19).

5. The electrostatic precipitator for biomass energy steam generators according to claim 4, wherein at least two circular grid plates (20) are provided, and the mesh openings (21) of the upper and lower circular grid plates (20) are different in size.

6. An electrostatic precipitator for biomass energy steam generators according to claim 2, in which the atomizer (8) is mounted by means of an insulating support at the top of the collection zone (6).

7. The electrostatic precipitator device for biomass energy steam generators according to claim 6, wherein the support comprises a transverse support (7) and an L-shaped support (9) mounted on the transverse support (7), the transverse support (7) penetrates through the base (1), the atomizer (8) is mounted on the transverse support (7), and the upper end of the L-shaped support (9) is used for being connected with a fixed corona wire (11).

8. The electrostatic precipitator for biomass energy steam generators according to claim 1, wherein the end of the insulating sleeve (10) located in the smoke purifying chamber (3) is sleeved with a nozzle (17), and the nozzle (17) is connected with an external water pipe (16).

9. The electrostatic precipitator for biomass energy steam generators according to claim 8, wherein the nozzle (17) has a through hole (22) for the sleeving of the insulating sleeve (10) and the passage of the corona wire (11), the water pipe (16) penetrates through the insulating sleeve (10) to the outside of the smoke purifying chamber (3), and a circle of spray holes (23) are formed on the outer side of the nozzle (17).

10. The electrostatic precipitator device for biomass energy steam generators according to claim 1, wherein the high voltage cable (12) is connected to a high voltage power supply (13), the high voltage power supply (13) is connected to an ac input (14), and the clean room (2) is grounded via a ground line (24).