KR101448881B1 - Electrostatically integrated system for treating pollution gas - Google Patents

Abstract

The present invention relates to an electrostatic composite integrated pollution gas treatment system, and the electrostatic composite integrated pollution gas treatment system of the present invention comprises a cooling treatment unit for cooling a polluted gas; A pulse discharger for desulfurizing and denitrifying the cooled polluted gas into plasma; A gas treatment unit for spraying an aqueous solution of sodium sulfite (Na ₂ SO ₃ ) so that nitrogen dioxide (NO ₂ ) contained in the polluted gas treated by the gas treatment unit is treated; A storage part for storing the aqueous sodium sulfite (Na ₂ SO ₃ ) solution; A discharge electrode to which a voltage is applied, and an electric dust collection unit disposed adjacent to the discharge electrode and collecting the fine particles by an electric field generated from a voltage applied to the discharge electrode.
Therefore, according to the present invention, there is provided an integrated electrostatic complex type pollution gas treatment system capable of simultaneously treating nitrogen oxides, sulfur oxides, and particulate matter contained in the polluted gas with a structure having a reduced size as a whole.

Description

TECHNICAL FIELD [0001] The present invention relates to an integrated electro-

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electrostatic-composite integrated pollution gas treatment system, and more particularly, to an electrostatic-combined integrated pollution gas treatment system capable of simultaneously treating nitrogen oxides, sulfur oxides, and particulate matter.

Generally, large-scale incineration plants and facilities that treat pollution gases, including nitrogen oxides and sulfur oxides, which are harmful air pollutants emitted from combustion facilities, use a large-scale pollution gas treatment system to treat polluted gas.

Fig. 1 shows an example of a conventional polluted gas processing apparatus.

As shown in FIG. 1, in the case of the conventional pollutant gas treating apparatus 10, sulfur oxides are treated with a flue gas desulfurization (FGD) 11, and then nitrogen oxides are treated with selective catalytic reduction Reduction treatment (SCR) 12, and the particulate matter is treated by the dry electrostatic precipitator 14.

However, the above-described flue gas desulfurization apparatus 11 and the selective catalytic reduction apparatus 12 are operated in such a manner that the pollutants contained in the polluted gas are treated while sequentially passing through two processes of denitrification and desulfurization, The initial investment cost and the operating cost were increased, and the optimum process combination of denitrification and desulfurization process was required.

In particular, when the flue gas desulfurization apparatus 11 is used, the overall scale becomes large,

Further, in the case of the selective catalytic reduction device 12 used for the treatment of nitrogen oxides, since the catalyst is operated only at a high temperature of at least 400 ° C, the operation condition is difficult and the expensive catalyst 13 must be used, There was a problem that was consumed.
<References> Japanese Laid-Open Patent Publication No. 11-267453

SUMMARY OF THE INVENTION It is therefore an object of the present invention to solve such conventional problems, and it is an object of the present invention to provide an electrostatic composite type integrated structure capable of simultaneously treating nitrogen oxides, sulfur oxides, And to provide a polluted gas treatment system.

According to the present invention, the above object can be achieved by a cooling processing unit for cooling a polluted gas; A pulse discharger for desulfurizing and denitrifying the cooled polluted gas into plasma; A storage part for storing an aqueous sodium sulfite (Na ₂ SO ₃ ) solution; A gas processing unit for transferring an aqueous solution of sodium sulfite (Na ₂ SO ₃ ) stored in the storage unit and spraying the aqueous solution through a plurality of atomizing nozzles so that nitrogen dioxide (NO ₂ ) contained in the polluted gas processed from the pulse discharger is processed; An electric dust collection unit including a discharge electrode to which a voltage is applied, and a dust collecting plate disposed adjacent to the discharge electrode and configured to collect fine particles by an electric field generated from a voltage applied to the discharge electrode and to form an aqueous sodium sulfite (Na ₂ SO ₃ ) And an integrated pollutant gas treatment system.

Also, the nitrogen monoxide (NO) contained in the polluted gas to be treated in the gas treatment unit may be reformed into nitrogen dioxide (NO ₂ ) in the pulse discharger.

Further, the cooling processing section may inject cooling water into the polluted gas.

Also, the pulse discharger may include a chamber through which the contaminated gas passes and is divided into a plurality of passages; And a pulse generating unit provided in each of the plurality of passages in the chamber to generate nano second pulses.

The electrostatic dust collecting unit may further include a spray nozzle for spraying an aqueous solution of sodium sulfite (Na ₂ SO ₃ ) onto the outer surface of the dust collecting plate so that fine particles collected on the dust collecting plate may flow down.

In addition, the jipjinpan is sodium ah inside (Na ₂ SO ₃₎ an aqueous solution is formed in the flow path for the flow, the flow a sulfite through by the flow (Na ₂ SO ₃₎ the top of the aqueous solution is to issue to flow along the outer surface A plurality of ejection holes may be formed in the substrate.

The pulse discharge unit, the gas processing unit, and the electric dust collection unit may be arranged in a line so that the contaminated gas flows straight and processed.

In addition, the gas processing unit is disposed above the storage portion, wherein the electrical dust collecting part is doedoe side by side arrangement and a gas processing unit at the upper side the storage portion, the gas processing unit and the electric dust collection section is the store from sodium sulfite (Na ₂ SO ₃ parts ) Aqueous solution.

The electrostatic dust collecting unit is provided on the upper side of the storage unit to receive an aqueous solution of sodium sulfite (Na ₂ SO ₃ ) from the storage unit. The gas treatment unit is disposed between the storage unit and the electric dust collection unit, It can be sprayed by supplying an aqueous sodium sulfite (Na ₂ SO ₃ ) solution.

The gas treatment unit may include a plurality of spherical packings disposed below the electrostatic dust collecting unit and forming a gap to spray an aqueous solution of sodium sulfite (Na ₂ SO ₃ ) flowing down from the electrostatic precipitator.

According to the present invention, there is provided an electrostatic-composite integrated pollution gas treatment system capable of simultaneously treating nitrogen oxides, sulfur oxides, and particulate matter with a relatively small scale.

Further, the pulse discharge efficiency can be improved by pretreating the polluted gas using the cooling processing unit.

Further, by using the pulse discharger, the back pressure can be reduced and the overall size can be reduced.

In addition, the denitrification efficiency can be improved by treating the nitrogen oxide modified with nitrogen dioxide (NO ₂ ) from the pulse discharger using an aqueous sodium sulfite solution.

In addition, energy efficiency can be increased by applying a pulsed high voltage in nanosecond units instantaneously in a pulse discharger, compared with the case of applying an AC voltage.

In addition, the use structure of the sodium sulfite (Na ₂ SO ₃ ) aqueous solution can be improved by preparing the overall structure in a U shape and providing a reservoir in which an aqueous solution of sodium sulfite (Na ₂ SO ₃ ) is stored.

In addition, a plurality of packings are included in a laminated structure in the gas treatment section without a separate powder chamber, and the powder is disposed below the electric dust collection section, whereby the aqueous solution of sodium sulfite (Na ₂ SO ₃ ) discarded from the electric dust collection section is reused for automatic atomization , The overall construction cost can be reduced.

Fig. 1 shows an example of a conventional polluted gas processing apparatus,
2 schematically shows a pollution gas integrated treatment system according to a first embodiment of the present invention,
FIG. 3 is a schematic view of an electrostatic precipitator of the electrostatic composite combined pollutant gas treatment system of FIG. 2,
4 schematically shows a modification of the electrostatic precipitator of the electrostatic composite combined pollution gas treatment system of FIG. 3,
5 schematically shows an electrostatic-combined-type integrated pollution gas treatment system according to a second embodiment of the present invention,
6 schematically shows an electrostatic-combined integrated pollution gas treatment system according to a third embodiment of the present invention.

Prior to the description, components having the same configuration are denoted by the same reference numerals as those in the first embodiment. In other embodiments, configurations different from those of the first embodiment will be described do.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown.

2 schematically shows a pollution gas integrated treatment system according to a first embodiment of the present invention.

Referring to FIG. 2, the electrostatic-combined-type integrated pollution gas treatment system 100 according to the first embodiment of the present invention collectively treats nitrogen oxides, sulfur oxides, and particulate matter (PM) And includes a casing 110, a cooling processing unit 120, a pulse discharger 130, a gas processing unit 140, a storage unit 150, and an electric dust collection unit 160.

The casing 110 is a casing for integrating the cooling processing unit 120, the pulse discharge unit 130, the gas processing unit 140, and the electric dust collecting unit 160, which will be described later, integrally. In this embodiment, the casing 110 is formed as a cylindrical shape having a space therein, but the present invention is not limited thereto as long as the structure can be integrally incorporated therein as described above.

The cooling processing unit 120 is a pretreatment that is accommodated in the casing 110 and improves the efficiency of the pollutant gas treatment in the pulse discharger 130 to be described later. The cooling treatment unit 120 is for cooling the pollutant gas to lower the temperature of the pollutant gas.

In this embodiment, the cooling processing unit 120 lowers the temperature of the polluting gas by injecting cooling water into the polluting gas, and at the same time, a part of sulfur dioxide (SO ₂ ) contained in the polluting gas is treated by the cooling water to be injected. In this embodiment, the cooling processing unit 120 is provided to inject cooling water, but is not limited thereto as long as it has a function of cooling the polluted gas.

The pulse discharger 130 is installed in the casing 110 and is arranged in a row in a direction perpendicular to the direction of gravity at the rear of the cooling processing unit 120. The pulse discharger 130 is accommodated in the casing 110, as in to modify the nitrogen monoxide (NO) at the same time handling the sulfur oxide (SOx) by generating plasma by generating a pulse of a nitrogen dioxide (NO _2), the chamber 131 and the pulse generating unit 132 and the additive injection assembly ( 133).

The chamber 131 is a region through which a contaminated gas passes and becomes a plasma state by pulse discharge, and the inside is divided into a plurality of passages.

The pulse generating unit 132 generates high-pressure pulses and is installed in each of a plurality of passages of the chambers 131 to be partitioned. Meanwhile, the pulse generating unit 132 generates a pulse discharge of nano second to process the polluted gas.

The additive injector 133 injects the additive together with the high voltage pulse of the pulse generator 132 to accelerate the decomposition reaction of the pollutant gas. Additive to be injected from additive injection assembly 133. In this embodiment, the ammonia (NH _3), carbon monoxide (CO), urea _{(Urea: CO (NH 2)} 2), water vapor (H ₂ O) and methane (CH ₄₎ , Aliphatic hydrocarbons including ethylene (C ₂ H ₄ ), propylene (C ₃ H ₆ ), and butane (C ₄ H ₁₀ ).

The gas processing unit 140 is disposed in a line with the pulse discharger 130 in the casing 110 and receives a sodium sulphate (Na ₂ SO ₃ ) aqueous solution stored in a storage unit 150 (NO ₂ ) from the pulse discharger 130 by spraying the mixture through the spray nozzle 141.

The storage unit 150 is a member for storing an aqueous sodium sulfite (Na ₂ SO ₃ ) solution supplied to the gas processing unit 140.

3 schematically shows an electrostatic precipitator of the electrostatic hybrid type integrated pollution gas treatment system of FIG.

3, the electric dust collecting unit 160 is disposed in a line with the gas processing unit 140 in the casing 110, and receives the polluted gas processed from the gas processing unit 140 to receive the particulate matter PM And includes a discharge unit 161, a dust collecting plate 162, a voltage applying unit 163, and a spray nozzle 164 for processing the particulate matter.

The discharge unit 161 is a member for generating an electric field between the discharge unit 161 and a later-described collecting plate 162, which receives a high voltage from a voltage applying unit 163 to be described later. The discharge unit 161 includes a pair of opposed collecting plates 162 .

A plurality of the dust collecting plates 162 are disposed so as to face each other, and the grounding state is maintained so that an electric field is formed between the dust collecting plates 162 and the discharging unit 161 described above.

The voltage application unit 163 is a member for applying a voltage to the discharge unit 161.

The injection nozzle 164 is connected to the storage unit 150 and is a member for spraying an aqueous sodium sulfite (Na ₂ SO ₃ ) solution to form a film on the surface of the dust collecting plate 162. Respectively.

4 schematically illustrates a modification of the electrostatic precipitator of the electrostatic composite combined pollutant gas treatment system of FIG.

Meanwhile, in the present embodiment, the electric dust collecting unit 160 is provided with a separate spray nozzle 164 to form a sodium sulphate (Na ₂ SO ₃ ) aqueous solution film. However, as shown in FIG. 4, A flow path 162a is formed in the dust collecting plate 162 'so that water can flow to the upper side of the dust collecting plate 162'. The dust collecting plate 162 ' A plurality of spray holes 162b may be formed so that the water raised along the outer surface 162a flows down along the outer surface.

Hereinafter, the operation of the first embodiment of the above-described electrostatic-combined-type integrated pollution gas treatment system will be described.

First, when a polluted gas including nitrogen oxides (NOx), sulfur oxides (SOx), and particulate matter (PM) flows into the casing 110, the cooling processing unit 120 injects cooling water, Lower the temperature of the gas.

At this time, the cooling water injected from the cooling processing unit 120 lowers the temperature of the polluted gas and also partially reduces the sulfur oxides (SOx).

The polluted gas whose temperature has been lowered by the cooling processing unit (120) flows into the pulse discharge machine (130). That is, when the polluted gas flows into the plurality of passages partitioned by the partition walls in the chamber 131, the pulse generating unit 130 applies the pulsed voltage of nano second units to plasmatize the polluted gas.

At this time, the pulse generating unit 130 has a pulse rising time of 50 ns to 500 ns, a pulse width of 100 ns to 1000 ns (Full Width at Half Maximum), a pulse period of 200 Hz to 2000 Hz, and a pulse maximum applied voltage of 100 kV Is preferable.

On the other hand, the additive is injected from the additive injecting section 133 simultaneously with the generation of the pulse from the pulse generating section 130. At this time, it is preferable that two or more kinds of injected additives are injected in order to accelerate the decomposition reaction of the polluted gas or improve the radical reduction efficiency. In this embodiment, ammonia (NH ₃ ) and HC gas Is uniformly injected and injected.

On the other hand, the polluted gas whose temperature is lowered by the cooling treatment in the cooling treatment section 120 becomes more easily plasmaized. In the present embodiment, since the polluted gas is cooled from the cooling processing unit 120 and the temperature is lowered, the plasma is more easily generated by the plasma Processing is possible.

Meanwhile, the nitrogen oxide (NOx) and the sulfur oxides (SOx) included in the polluted gas subjected to the plasma treatment by the pulse discharge undergo reaction as shown in the following formulas (1) to (4).

[Chemical Formula 1]

SO ₂ + O ₂ -> SO ₃

(2)

SO ₃ + H ₂ O -> H ₂ SO ₄

(3)

NO ₂ + SO ₂ -> H ₂ SO ₄ + NO

[Chemical Formula 4]

2NO + O ₂ -> 2NO ₂

That is, in the pulse discharger 130, the sulfur oxides (SOx) contained in the polluted gas are reduced and treated, and the nitrogen monoxide NO is reformed into nitrogen dioxide (NO ₂ ).

At the same time, the contaminated gas desulfurized from the pulse discharger 130 flows into the gas processing unit 140, and the gas processing unit 140 injects the aqueous sodium sulfite (Na ₂ SO ₃ ) solution stored in the storage unit 150, And processes the carbon dioxide (NO ₂ ) modified by the discharger 130.

The desulfurized and denitrified gas passes through the pulse discharger 130 and the gas treating unit 140 in order, and the contaminated gas flows into the electric dust collecting unit 160.

When a voltage is applied to the discharge unit 161 by the voltage applying unit 163, an electric field is generated on the side of the dust-collecting plate 162 that is electrically grounded. Particulate matter (PM) such as mist and fine particles included in the polluted gas is collected toward the dust collecting plate 162 by the electric field formed between the discharge part 161 and the dust collecting plate 162.

At this time, an aqueous solution of sodium sulfite (Na ₂ SO ₃ ) is sprayed by the spray nozzle 164 disposed at the upper end of the dust collecting plate 162 to form a film on the surface of the dust collecting plate 162, and an aqueous sodium sulfite (Na ₂ SO ₃ ) The particulate matter PM does not come into direct contact with the dust collecting plate 162 but flows down.

In the present embodiment, the aqueous solution of sodium sulfite (Na ₂ SO ₃ ) is injected through the injection nozzle 164. However, in the modified example, the flow path 162 a formed inside the dust collecting plate 162 ' (Na ₂ SO ₃ ) aqueous solution flowing through the dust collecting plate 162 'is discharged from the spray hole formed in the dust collecting plate and a liquid film containing sodium sulfite (Na ₂ SO ₃ ) is formed on the dust collecting plate 162' It can be processed downward and processed.

Therefore, the purified gas processed up to the particulate matter is finally discharged to the outside of the casing 110.

Therefore, according to the electrostatic-combined-type integrated pollution gas treatment system 100 of the first embodiment of the present invention, the nitrogen oxide (NOx), the sulfur oxides (SOx), and the particulate matter PM are integrally treated can do.

Next, a description will be given of an electrostatic-combined-type integrated pollution gas treatment system 200 according to a second embodiment of the present invention.

5 schematically shows an electrostatic composite integrated pollution gas treatment system according to a second embodiment of the present invention.

Referring to FIG. 5, the electrostatic-combined-type integrated pollution gas treatment system 200 according to the second embodiment of the present invention collectively treats nitrogen oxides, sulfur oxides, and particulate matter (PM) A cooling processing unit 220, a pulse discharger 230, a gas processing unit 240, a storage unit 250, and an electric dust collection unit 260.

The casing 210 is long along the gravity direction and includes a cooling processing unit 220, a pulse discharger 230, a gas processing unit 240, a storage unit 250, and an electric dust collection unit 260 So that they can be integrated.

The cooling processing unit 220 is a pretreatment that is accommodated in the casing 210 and improves the efficiency of treating the polluted gas in the pulse discharge unit 230 described later. The cooling treatment unit 220 is used to cool the polluted gas.

In the present embodiment, the cooling processing unit 220 lowers the temperature of the polluting gas by injecting cooling water into the polluting gas, and at the same time, a part of sulfur dioxide (SO ₂ ) contained in the polluting gas is treated by the cooling water to be injected. In this embodiment, the cooling processing unit 220 is provided in the form of spraying cooling water, but is not limited thereto as long as it has a function of cooling the polluted gas.

The pulse discharger 230 is disposed inside the casing 210 and is provided at the lower end of the cooling processing unit. The pulse discharge unit 230 processes the sulfur oxides (SOx) by generating pulses in the polluted gas in a state of being accommodated, And includes a chamber 231, a pulse generating unit 232, and an additive spraying unit 233 for reforming nitrogen (NO) into nitrogen dioxide (NO ₂ ).

The chamber 231 is a region through which the contaminated gas passes and becomes a plasma state by pulse discharge, and the inside is divided into a plurality of passages.

The pulse generating unit 232 generates high-pressure pulses and is installed in a plurality of passages of the chamber 231 to be partitioned. Meanwhile, the pulse generating unit 232 generates a pulse discharge of nano second to process the polluted gas.

The additive injector 233 injects an additive to accelerate the decomposition reaction of the pollutant gas.

The gas processing unit 240 is disposed below the pulse discharger 230 in the casing 210 and receives a sodium sulphate (Na ₂ SO ₃ ) aqueous solution stored in a storage unit (NO ₂ ) from a pulse discharge machine by spraying the nitrogen dioxide (NO ₂ ) through a sprayer.

In other words, in the present embodiment, the pulse discharging unit 230 and the gas processing unit 240 are installed along the direction parallel to the gravity direction, unlike the first embodiment, which is arranged in a line perpendicular to gravity.

The storage unit 250 stores and accommodates an aqueous solution of sodium sulfite (Na ₂ SO ₃ ) supplied to the gas processing unit 240 and the electric dust collecting unit 260 described below. The storage unit 250 includes a gas processing unit 240, 260, respectively.

That is, in the present embodiment, the storage unit 250 is provided at the lower end of the gas processing unit 240 and the electric dust collecting unit 250 described below, and is connected to the gas processing unit 240 and the electric dust collecting unit 250, ₂ SO ₃ ) aqueous solution at the same time, which will be described later.

The electric dust collection unit 260 is installed inside the casing 210 and is provided on the upper side of the storage unit 250. The electric dust collecting unit 260 includes the discharge unit 261, the dust collecting plate 262, the voltage applying unit 263, and the spray nozzle 264, which are disposed adjacent to the gas processing unit 240, And the structure of the electric dust collecting portion are the same as those in the first embodiment, and duplicate description will be omitted.

The operation of the second embodiment of the electrostatic-combined-type integrated pollution gas treatment system 200 will be described below. An aqueous solution of sodium sulfite (Na ₂ SO ₃ ) injected from the gas treatment unit 240 is injected from the electrostatic precipitator 260 The aqueous sodium sulfite (Na ₂ SO ₃ ) solution flowing down is simultaneously stored in the storage part 250.

At the same time, the aqueous solution of sodium sulfite (Na ₂ SO ₃ ) stored in the single storage part 250 is sprayed through the spray port 241 of the gas treatment part 240 and sprayed to the spray nozzle 264 of the electric dust collection part 260. So that they can be used simultaneously.

Therefore, according to the present embodiment, since the gas processing unit 240 and the electric dust collection unit 260 are arranged side by side to have a U-shaped structure as a whole, the size in the longitudinal direction is shortened and a more compact structure have.

The aqueous solution of sodium sulfite (Na ₂ SO ₃ ) injected from the gas treatment unit 240 and the electric dust collecting unit 260 is stored in the single storage unit 250 and sodium sulfite (Na ₂ SO ₃ ) ₂ SO ₃ ) aqueous solution is used in the gas processing unit 240 and the electric dust collecting unit 260, the overall system size can be made more compact.

Next, a description will be given of an electrostatic-combined-type integrated pollution gas treatment system 300 according to a third embodiment of the present invention.

6 schematically shows an electrostatic-combined integrated pollution gas treatment system according to a third embodiment of the present invention.

Referring to FIG. 6, the electrostatic composite combined pollutant gas treatment system 300 according to the third embodiment of the present invention collectively treats nitrogen oxides, sulfur oxides, and particulate matter (PM) And includes a casing 210, a cooling processing unit 220, a pulse discharge unit 230, a gas processing unit 340, a storage unit 250, and an electric dust collection unit 260.

However, the casing 210, the cooling processing unit 220, the pulse discharger 230, the storage unit 250, and the electric dust collection unit 260 of the present embodiment are the same as those described in the second embodiment, , And only the gas treatment section will be described later.

The gas processing unit 340 is disposed below the electric dust collection unit 260 in the present embodiment, unlike the second embodiment, which is disposed below the pulse discharge device 230. In addition, the gas processing unit 340 of the present embodiment includes a plurality of packings 341, unlike the second embodiment in which a plurality of the fluid distributors are provided.

The plurality of packings 341 are spherical sponge materials excellent in water absorption rate and arranged in a structure in which a plurality of layers are stacked and are made of sodium sulphate (Na ₂ SO ₃ ) flowing down from the dust collecting plate 262 of the electric dust collecting unit 260 ) Creates voids inside so that the aqueous solution can be sprayed as it passes.

The gas processing unit 340 is provided on the lower side of the electric dust collecting unit 260 in a structure in which a plurality of packings 341 are stacked.

The operation of the third embodiment of the electrostatic-combined-type integrated pollution gas treatment system 300 will be described. The aqueous solution of sodium sulfite (Na ₂ SO ₃ ) injected from the electric dust collector 260 and flowing along the dust collecting plate 262 Is temporarily stored in the packing 314 of the laminated structure and sprayed on the lower side of the gas processing part 340 while being transported downward by the gap between the packing 314.

The aqueous solution of sodium sulfite (Na ₂ SO ₃ ) sprayed by the void structure between the packings 314 reduces and treats nitrogen dioxide (NO ₂ ) contained in the polluted gas and is stored again in the storage unit 250.

Therefore, according to the electrostatic-combined-type integrated pollution gas treatment system 300 of the present embodiment, the aqueous solution of sodium sulfite (Na ₂ SO ₃ ) is sprayed only by the structure of the stacked packing 341 The effect can be realized and the nitrogen dioxide (NO ₂ ) can be treated, so the installation cost of the whole equipment can be reduced.

The scope of the present invention is not limited to the above-described embodiments, but may be embodied in various forms of embodiments within the scope of the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

100: An electrostatic-composite integrated pollution gas treatment system according to the first embodiment of the present invention
110: casing 120: cooling processing section
130: Pulse discharger 140: Gas processor
150: storage part 160: electric dust collection part

Claims (10)

A cooling processing unit for cooling the polluted gas;
A pulse discharger for desulfurizing and denitrifying the cooled polluted gas into plasma;
A storage part for storing an aqueous sodium sulfite (Na ₂ SO ₃ ) solution;
A gas processing unit for transferring an aqueous solution of sodium sulfite (Na ₂ SO ₃ ) stored in the storage unit and spraying the aqueous solution through a plurality of atomizing nozzles so that nitrogen dioxide (NO ₂ ) contained in the polluted gas processed from the pulse discharger is processed;
An electric dust collection unit including a discharge electrode to which a voltage is applied, and a dust collecting plate disposed adjacent to the discharge electrode and configured to collect fine particles by an electric field generated from a voltage applied to the discharge electrode and to form an aqueous sodium sulfite (Na ₂ SO ₃ ) Wherein the integrated pollutant gas treatment system comprises: The method according to claim 1,
Wherein the nitrogen monoxide NO contained in the polluted gas is reformed into nitrogen dioxide (NO ₂ ) in a pulse discharger to be treated in the gas treatment unit. The method according to claim 1,
Wherein the cooling processing unit injects cooling water into the contaminated gas. The method according to claim 1,
Wherein the pulse discharger includes: a chamber through which the contaminated gas passes and is divided into a plurality of passages; And a pulse generating unit provided in each of the plurality of passages in the chamber for generating nano second pulses. The method according to claim 1,
Wherein the electrostatic dust collecting unit further comprises an injection nozzle for spraying an aqueous solution of sodium sulfite (Na ₂ SO ₃ ) on the outer surface of the dust collecting plate so that fine particles collected on the dust collecting plate flow down, . The method according to claim 1,
In the dust collecting plate, a flow path for flowing an aqueous solution of sodium sulfite (Na ₂ SO ₃ ) is formed, and a plurality of sodium sulfide (Na ₂ SO ₃ ) solutions flowing through the flow path are flowed along the outer surface Wherein the plurality of injection holes are formed in the plurality of injection holes. The method according to claim 1,
Wherein the pulse discharge unit, the gas treatment unit, and the electric dust collection unit are arranged in a line so that the polluted gas flows straight and flows. 7. The method according to any one of claims 1 to 6,
Wherein the gas processing unit is disposed above the storage unit,
Wherein the electric dust collection unit is disposed in parallel with the gas processing unit on the upper side of the storage unit,
Wherein the gas treatment unit and the electric dust collection unit are supplied with an aqueous solution of sodium sulfite (Na ₂ SO ₃ ) from the storage unit. 7. The method according to any one of claims 1 to 6,
The electrostatic precipitator is provided on the upper side of the reservoir to receive an aqueous sodium sulfite (Na ₂ SO ₃ ) solution from the reservoir,
Wherein the gas treatment unit is disposed between the storage unit and the electric dust collection unit to spray and spray an aqueous solution of sodium sulfite (Na ₂ SO ₃ ) flowing down from the electric dust collection unit. 10. The method of claim 9,
Wherein the gas treatment unit includes a plurality of spherical packing arranged below the electric dust collection unit and forming a gap to spray an aqueous solution of sodium sulfite (Na ₂ SO ₃ ) flowing down from the electric dust collection unit. Integrated pollution gas treatment system.

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