KR102275442B1 - Simultaneous reduction of sulfur dioxide and carbon dioxide - Google Patents

Abstract

A device for simultaneously reducing sulfur dioxide and carbon dioxide according to the present invention comprises: a first stage reduction unit which generates pretreatment gas by reducing sulfurous acid gas (SO_2) of exhaust gas by enabling a first washing water spraying unit to spray first washing water to the exhaust gas input into a first scrubber from the outside through a first gas inlet in the form of a swirl provided in the first gas inlet; and a second stage reduction unit which is provided on an upper side of the first stage reduction unit and generates clean gas by reducing carbon dioxide (CO_2) in the pretreatment gas by enabling a second washing water spraying unit to spray second washing water to the pretreatment gas passed through the first stage reduction unit through a second gas inlet in the form of the swirl provided in the second gas inlet unit and injected into a second scrubber; and a control unit for controlling the processes of the first stage reduction unit and the second stage reduction unit. The first washing water spraying unit reduces the sulfurous acid gas by allowing the first washing water in which two or more substances are mixed or the two or more substances to be mixed in the spraying process of the first washing water. The second washing water spraying unit reduces the carbon dioxide by allowing the second washing water in which two or more substances are mixed or the two or more substances to be mixed in the spraying process of the second washing water.

Description

Simultaneous reduction of sulfur dioxide and carbon dioxide

The present invention relates to a device for simultaneously reducing sulfur dioxide and carbon dioxide, and more particularly, to a device for simultaneously reducing sulfur dioxide and carbon dioxide that can reduce sulfur dioxide and carbon dioxide in exhaust gas by contacting washing water and exhaust gas in a two-stage scrubber .

Exhaust gas discharged from diesel engines of ships, etc. _{contains a large amount of pollutants such as sulfurous acid gas (SO 2} ) and carbon dioxide (CO ₂ ), and these pollutants are attracting attention as the main cause of environmental destruction.

Accordingly, as the awareness of marine environment conservation is increasing worldwide, environmental pollutants emitted from ship engines are being regulated, and the content of harmful components contained in ship exhaust gas is lowered below the allowable concentration according to the regulation of environmental pollutants The purification process has become a necessity, and only the clean gas that has undergone the purification process is obliged to be discharged into the atmosphere.

For this purpose, the flue gas cleaning device is largely classified into a running water type, a pressurized water type and a rotary type. In particular, in the pressurized water type, components such as a scrubber, a pack tower, and a spray tower are generally provided.

This pressurized water type flue gas cleaning device sprays washing water such as water and alkali absorbent in each scrubber to remove the pollutants to agglomerate the pollutants in the exhaust gas, then mixes and separates the washing water and It is important to maximize the effect of reducing pollutants by increasing the contact area of the exhaust gas.

However, in the case of installing a plurality of scrubbers connected in series for cleaning pollutants in the exhaust gas in the conventional exhaust gas cleaning device, the size of the device increases as well as a relatively large site is required. It was difficult to construct, and the space occupied by the device in the site increased significantly, so there was a problem in that the space utilization of the site was lowered.

Republic of Korea Patent Publication No. 10-1757984 (registered on July 7, 2017) Republic of Korea Patent Publication No. 10-0944146 (registered on February 18, 2010)

Accordingly, the present invention has been devised to solve the above problems, and reduces sulfur dioxide in the exhaust gas through the first washing water in the scrubber of the first stage reducing unit to generate a pre-treatment gas, and the first stage reducing unit and An object of the present invention is to provide a miniaturized sulfur dioxide gas and carbon dioxide reduction device capable of generating clean gas by reducing carbon dioxide in the pretreatment gas through the second washing water in the scrubber of the second stage reduction unit vertically connected.

However, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned above are clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. it could be

As a technical means for achieving the above object, the device for simultaneously reducing sulfur dioxide and carbon dioxide of the present invention is a first scrubber from the outside through a first gas inlet in the form of a swirl provided in the first gas inlet. a first stage reducing unit for generating a pretreatment gas by reducing _{sulfur dioxide (SO 2} ) in the exhaust gas by injecting the first washing water into the exhaust gas injected into the first washing water injection unit; and a second washing water to the pretreatment gas that is provided on the upper side of the first-stage reduction unit and passes through the first-stage reduction unit through the second gas inlet in the form of a swirl provided in the second gas inlet and is injected into the second scrubber. a second stage reduction unit for generating clean gas by reducing _{carbon dioxide (CO 2} ) in the pretreatment gas by injecting the second washing water by the injection unit; and a control unit for controlling the processes of the first stage reducing unit and the second stage reducing unit, wherein the first washing water spraying unit includes a first washing water in which two or more substances are mixed or a first washing water in which two or more substances are mixed. The sulfur dioxide is reduced by mixing in the process, and the second washing water spraying unit reduces carbon dioxide by mixing the second washing water in which two or more substances are mixed or the two or more substances in the spraying process of the second washing water.

In addition, the first stage reduction unit, the first demister is provided on the upper side of the first scrubber to prevent the second washing water from flowing back to the first scrubber; a first pawling provided at a lower side of the first washing water jetting unit to increase a contact area between the first washing water sprayed downward from the first washing water jetting unit and the exhaust gas; a first drain unit provided under the first scrubber to collect sulfur dioxide gas through a first poling, and then drain the first washing water in a droplet state that has fallen to the lower side of the first scrubber to the outside; and a first washing water inducing part in which one end of the moving surface adjacent to the first draining part is inclined downward relative to the other end of the moving surface to induce the first washing water in a droplet state to move to the first draining part along the moving surface.

And the first washing water spraying unit, the first washing water storage chamber for storing the first washing water; a first fluid inlet pipe connected to the first washing water storage chamber into which the first washing water is introduced; and at least one first nozzle provided on one side of the first fluid inlet pipe to spray the first washing water flowing into the first fluid inlet pipe into the first scrubber.

In addition, the first washing water spraying unit further includes a first air storage chamber that stores air to be sprayed from the first nozzle to dry the inside of the first scrubber, and the first fluid inlet pipe, the first nozzle 1 A rotation means is provided to remove the first washing water or contaminants in the form of droplets remaining on the inner wall of the first scrubber through the air of the air storage chamber, and the air jet angle of the first nozzle through rotation by the rotation means adjust the

And the second stage reduction unit, a gas discharge unit for discharging the clean gas to the outside through the gas outlet formed on the upper side of the second scrubber; and a second demister for removing moisture from the clean gas before the clean gas is discharged to the outside through the gas outlet. a second pawling provided at the lower side of the second washing water jetting unit to increase a contact area between the second washing water sprayed downward from the second washing water jetting unit and the exhaust gas; a second drain unit provided under the second scrubber to collect carbon dioxide through a second polling and then drain the second washing water in a droplet state that has fallen to the lower side of the second scrubber to the outside; and a second washing water inducing part in which one end of the moving surface adjacent to the second draining part is inclined downward relative to the other end of the moving surface to induce the second washing water in a droplet state to move to the second draining part along the moving surface.

In addition, the second washing water spraying unit may include: a second washing water storage chamber configured to store the second washing water; a second fluid inlet pipe connected to the second washing water storage chamber into which the second washing water is introduced; and a second nozzle provided at one or more sides of the second fluid inlet pipe to spray the second washing water flowing into the second fluid inlet pipe into the second scrubber.

and a second air storage chamber for storing air to be sprayed from the second nozzle to dry the inside of the second scrubber, and the second fluid inlet pipe may include: A rotating means is provided to remove the second washing water or contaminants in the form of droplets remaining on the inner wall of the second scrubber through the air of the air storage chamber, and the air injection angle of the second nozzle is adjusted through the rotation by the rotating means. Adjust.

In addition, the first stage reduction unit, when some of the clean gas of the clean gas flows out from the second scrubber through the clean gas outlet pipe connected to the second stage reduction unit and is stored in the clean gas storage chamber, the clean gas storage chamber and and a first drying unit drying the first scrubber by moving the clean gas stored in the clean gas storage chamber along the first bypass path connecting the first scrubber, and the second stage reducing unit includes: a clean gas storage chamber a second drying unit for drying the second scrubber by moving the clean gas stored in the clean gas storage chamber along the second bypass path connecting the clean gas storage chamber and the second scrubber when the clean gas is stored in the include

And the first drying unit, a first clean gas moving pipe forming a first bypass path; a first circulation inducing unit provided inside the first clean gas moving pipe and circulating the clean gas moving along the first bypass path through the first screw to induce the clean gas to move; a first PM filter provided at the rear end of the first circulation induction part among the inside of the first clean gas moving pipe and removing particulate matter (PM) contained in the clean gas rotated by the first circulation induction part; and a first wing provided at the rear end of the first PM filter in the interior of the first clean gas moving pipe and rotating along a rotational axis to induce clean gas from which particulate matter is removed to be discharged to the first scrubber.

In addition, the second drying unit may include a second clean gas moving pipe forming a second bypass path; a second circulation inducing unit provided inside the second clean gas moving pipe and circulating the clean gas moving along the second bypass path through the second screw to induce the clean gas to move; a second PM filter provided at a rear end of the second circulation inducing unit among the inside of the second clean gas moving pipe and removing particulate matter contained in the clean gas rotated by the second circulation inducing unit; and a second wing provided at the rear end of the second PM filter in the interior of the second clean gas pipe, and rotated through a rotation shaft coupled to one side to induce the clean gas from which particulate matter has been removed to be discharged to the second scrubber; includes; do.

And the sulfur dioxide and carbon dioxide reduction device is rotated through one or more first rotation shafts coupled to the end of the first cover provided on the upper side of the first gas inlet, the first cleaning of the droplet state falling to the upper side of the first cover a first backflow preventing unit for preventing the first washing water from flowing back into the first gas inlet through the first receiving cover for accommodating the water on the upper side of the first cover; and the second washing water in a droplet state that is rotated through one or more second rotation shafts coupled to the end of the second cover provided on the upper side of the second gas inlet and dropped to the upper side of the second cover is received on the upper side of the second cover and a second backflow preventing part for preventing the second washing water from flowing back into the second gas inlet through the second receiving cover for doing so.

According to the present invention, it is possible to prevent environmental pollution by reducing the sulfur dioxide and carbon dioxide of the flue gas to purify the gas discharged to the ship.

In addition, according to the present invention, the device can be downsized by vertically connecting the scrubber for reducing sulfur dioxide and carbon dioxide in the exhaust gas.

And according to the present invention, it is possible to extend the life of the device by preventing the backflow of the washing water and drying the scrubber.

However, the effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be able

1 is a side cross-sectional view of an apparatus for simultaneously reducing sulfurous acid gas and carbon dioxide according to an embodiment of the present invention.
2 is a conceptual diagram of a process for reducing sulfur dioxide and carbon dioxide according to an embodiment of the present invention.
3 is a view for explaining a spraying method of the first washing water according to an embodiment of the present invention.
4 is a view for explaining a spraying method of the second washing water according to an embodiment of the present invention.
5 is a side cross-sectional view of a device for simultaneously reducing sulfur dioxide and carbon dioxide according to another embodiment of the present invention.
6 is a side cross-sectional view of first and second drying units according to another embodiment of the present invention.
7 is a view showing a state of use of the first and second backflow prevention units according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. However, since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiment described in the text. That is, since the embodiment may have various modifications and may have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only such effects, it should not be understood that the scope of the present invention is limited thereby.

The meaning of the terms described in the present invention should be understood as follows.

Terms such as “first” and “second” are for distinguishing one component from another, and the scope of rights should not be limited by these terms. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component. When a component is referred to as being “connected” to another component, it may be directly connected to the other component, but it should be understood that other components may exist in between. On the other hand, when it is mentioned that a certain element is "directly connected" to another element, it should be understood that the other element does not exist in the middle. Meanwhile, other expressions describing the relationship between elements, that is, “between” and “immediately between” or “neighboring to” and “directly adjacent to”, etc., should be interpreted similarly.

The singular expression is to be understood as including the plural expression unless the context clearly dictates otherwise, and terms such as "comprises" or "have" refer to the described feature, number, step, action, component, part or these It is intended to indicate that a combination exists, and it should be understood that it does not preclude the possibility of the existence or addition of one or more other features or numbers, steps, operations, components, parts, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Terms defined in the dictionary should be interpreted as being consistent with the meaning of the context of the related art, and cannot be interpreted as having an ideal or excessively formal meaning unless explicitly defined in the present invention.

Hereinafter, with reference to the accompanying drawings, a device for simultaneously reducing sulfur dioxide and carbon dioxide 1 (hereinafter, referred to as a 'simultaneous reduction device (1)') according to an embodiment of the present invention will be described in detail.

1 to 4, the simultaneous reduction device 1 according to an embodiment of the present invention is in contact with the washing water and the exhaust gas in a vertically connected two-stage scrubber, sulfur dioxide (SO ₂ ) and carbon dioxide (CO _{2 ) of the exhaust gas} ) is configured to include a first stage reduction unit 10 , a second stage reduction unit 20 , and a control unit 30 to reduce (remove).

The first stage reduction unit 10 includes a first scrubber 100, a first gas inlet 110, a first palling 120, and a first scrubber 100 to generate a pretreatment gas by reducing sulfur dioxide in the exhaust gas input from the outside. It is configured to include a first washing water spraying unit 130 , a first draining unit 140 , a first washing water inducing unit 150 , and a first demister 160 .

The first scrubber 100 provides a space for accommodating the exhaust gas introduced from the outside through the first gas inlet 110 .

The first gas inlet 110 includes a first gas inlet 111 , a first gas inlet pipe 112 and a first cover 113 to introduce an external exhaust gas into the first scrubber 100 . configured to do

The first gas inlet 111 is formed in a swirl shape in order to increase the processing efficiency of the exhaust gas by improving the inflow rate of the exhaust gas in the process of introducing the exhaust gas into the first scrubber 100 .

The first gas inlet pipe 112 passes through the lower side of the first scrubber 100 , the first gas inlet 111 is coupled to the upper side, and the flue gas is introduced into the first scrubber 100 . provides a path of travel.

The first cover 113 is coupled to the upper side of the first gas inlet 111 , and after being sprayed from the first washing water spraying unit 130 , the first washing water falling downward through the first gas inlet 111 . By preventing backflow into the first gas inlet pipe 112 , the lifetime of the simultaneous reduction device 1 may be extended.

In addition, the first cover 113 includes the first gas inlet 111 and the first gas inlet 111 to prevent the first washing water from falling into the first gas inlet 111 after moving downward along the upper moving surface by surface tension. It is preferable that the width in the horizontal direction is relatively longer than that of the gas inlet pipe 112 .

The first pawl 120 is provided on the lower side of the first washing water jetting unit 130, and the first washing water sprayed downward from the first washing water jetting unit 130 is formed in the form of droplets by surface tension. 120) remains on the surface.

Since the first washing water remains in the form of droplets on the surface of the first pawling 120 , the first washing water sprayed from the first washing water spraying unit 130 and the exhaust gas are in direct contact with each other for the first washing. It is possible to increase the reduction efficiency of sulfur dioxide gas by increasing the contact area between water and exhaust gas.

The first washing water spraying unit 130 is configured to include a first washing water storage chamber 131 , a first fluid inlet pipe 132 , and a first nozzle 133 for spraying the first washing water.

The first washing water storage chamber 131 is provided inside or outside the simultaneous reduction device 1 , and stores the first washing water to be sprayed into the first scrubber 100 .

Here, the first washing water is not limited as long as it is a fluid capable of reducing sulfurous acid gas when it is in contact with or mixed with the sulfurous acid gas of the exhaust gas.

The first fluid inlet pipe 132 is connected to the first washing water storage chamber 131 so that the first washing water is introduced therein, and the first washing water introduced into the first fluid inlet pipe 132 is connected to the first nozzle 133 for moving the first washing water into the first nozzle 133 . 1 Provides a path for cleaning water.

One or more first nozzles 133 are provided on one side of the first fluid inlet pipe 132, and the first washing water flowing into the first fluid inlet pipe and moving along the first washing water movement path is treated with a first scrubber ( 100) and spray toward the inside.

The first nozzle 133 sprays the first washing water supplied through the first fluid inlet pipe 132 toward the inside of the first scrubber 100, and does not limit the first washing water jetting method, The first washing water storage method of the first washing water storage chamber 131, the first washing water movement path providing method of the first fluid inlet pipe 132, and the first washing water spraying method are modified in various ways. 1 washing water may be sprayed into the first scrubber 100 .

As a specific example, referring to FIG. 3A , the first washing water storage chamber 131 includes a 1-1 washing water storage chamber 131a for storing the 1-1 washing water of the first material and the first washing water storage chamber 131a. It may be implemented as a 1-2 washing water storage chamber 131b that stores 1-2 washing water of a second material that causes a reaction to reduce sulfur dioxide gas in the exhaust gas when it comes into contact with or mixed with 1-1 washing water, The 1-1 and 1-2 washing water storage chambers 131a and 131b are connected to the first fluid inlet pipe 132 to supply the 1-1 and 1-2 washing water to the first fluid inlet pipe 132 . ) can be supplied. Accordingly, the first fluid inlet pipe 132 may generate the 1-3 washing water of the third material by mixing the 1-1 washing water and the 1-2 washing water for reducing sulfur dioxide gas inside. and the 1-3 washing water may be supplied to the first nozzle 133 . Through this, the first nozzle 133 may reduce the sulfurous acid gas of the exhaust gas through contact of the third material with the exhaust gas by injecting the 1-3 washing water toward the sulfurous acid gas of the exhaust gas.

As another example, referring to FIG. 3B , the first washing water storage chamber 131 is divided into a 1-1 washing water storage chamber 131a and a 1-2 washing water storage chamber 131b as in the above example. Implemented, the first fluid inlet pipe 132 is configured to supply the first-first washing water to some of the first nozzles 133a among the plurality of first nozzles 133 while supplying the first-first-first washing water to the remaining first nozzles 133b. The inner wall 132c may be formed so that the second washing water is supplied, and the inside thereof includes a first supply region 132a for supplying the 1-1 washing water to the first nozzle 133a and the remaining first nozzles 133b. may consist of a second supply region 132b for supplying the 1-2 washing water to the It can be implemented as a narrowed and widened venturi tube (or an orifice tube). Meanwhile, the injection angle of the first nozzle 133 may be adjusted so that the injection areas of the first nozzles 133a and 133b partially overlap in order to generate a third material for reducing sulfur dioxide in the exhaust gas. Accordingly, the 1-1 and 1-2 washing waters may be contacted or mixed in the overlapping injection area to be converted into the 1-3 washing water for reducing sulfur dioxide in the exhaust gas.

The first drain unit 140 is provided at the lower side of the first scrubber 100 and drains the first washing water in a droplet state that has passed through the first pawling 120 and has fallen to the lower side of the first scrubber 100 to the outside. do. Here, the first washing water in a droplet state means the first washing water in a state in which sulfur dioxide gas is collected.

Also, the first washing water in a droplet state may be the first washing water or the 1-3 washing water according to the implementation method of the first washing water storage chamber 131 .

In the first washing water induction unit 150, one end of the moving surface adjacent to the first draining unit 140 is inclined downward relative to the other end, so that the first washing water in a droplet state follows the moving surface of the first drainage unit 140. induce it to move to

The first washing water guide unit 150 may prevent the first washing water from remaining on the lower side of the first scrubber 100 through the inclination of the moving surface.

The first demister 160 is provided on the lower side of the second scrubber 200 of the second stage reduction unit 20 to be described later, that is, on the upper side of the first scrubber 100 to provide a second gas inlet 211 to be described later. The second washing water, which can be flowed back through, is prevented from flowing back into the first scrubber 100 .

The first demister 160 prevents the backflow of the second washing water as a fluid for the reduction of carbon dioxide, not the reduction of sulfurous acid gas, and the second washing water prevents the contact between the first washing water and the sulfurous acid gas during the reverse flow. This is because the reduction efficiency of sulfur dioxide gas may be reduced.

However, the reverse flow of the second washing water to the first scrubber 100 may also be prevented by the second cover 213 to be described later.

The second-stage reduction unit 20 is provided above the first-stage reduction unit 10 , and a first scrubber for generating clean gas by reducing carbon dioxide in the pre-processing gas generated in the first-stage reducing unit 10 . 100, the second gas inlet 210, the second palling 220, the second washing water spraying unit 230, the second draining unit 240, the second washing water inducing unit 250, the second des It is configured to include a Mr. 260 and a gas outlet 270 . Here, the clean gas means a gas in which sulfur dioxide and carbon dioxide discharged from the ship are purified.

The second scrubber 200 provides a space for accommodating the pretreatment gas introduced from the outside through the second gas inlet 210 .

The second gas inlet 210 includes a second gas inlet 211 , a second gas inlet pipe 212 and a second cover 213 to introduce the pretreatment gas into the second scrubber 200 . is composed

The second gas inlet 211 is formed in a swirl shape to increase the processing efficiency of the pretreatment gas by improving the inflow rate of the pretreatment gas in the process of introducing the pretreatment gas into the second scrubber 200 .

The second gas inlet pipe 212 passes through the lower side of the second scrubber 200, the second gas inlet 211 is coupled to the upper side, and the pretreatment gas is introduced into the second scrubber 100. It provides a movement path for the pretreatment gas.

The second cover 213 is coupled to the upper side of the second gas inlet 211 , and after being sprayed from the second washing water spraying unit 230 , the second washing water falling downward through the second gas inlet 211 . The second gas inlet pipe 212 , that is, by preventing backflow into the first scrubber 100 , the lifetime of the simultaneous reduction device 1 may be extended.

In addition, the second cover 213 includes the second gas inlet 211 and the second gas inlet 211 to prevent the second washing water from falling into the second gas inlet 211 after moving downward along the upper moving surface by surface tension. It is preferable that the width in the horizontal direction is relatively longer than that of the gas inlet pipe 212 .

The second pawl 220 is provided on the lower side of the second washing water jetting unit 230 and the second washing water sprayed downward from the second washing water jetting unit 230 in the form of droplets by surface tension ( 220) remains on the surface.

In addition, since the second washing water remains in the form of droplets on the surface of the second pawling 220 , the second washing water sprayed from the second washing water spraying unit 230 and the pretreatment gas are in direct contact with each other. 2 By increasing the contact area between the washing water and the pretreatment gas, it is possible to increase the carbon dioxide reduction efficiency.

The second washing water spraying unit 230 is configured to include a second washing water storage chamber 231 , a second fluid inlet pipe 232 , and a second nozzle 233 for spraying the second washing water.

The second washing water storage chamber 231 is provided inside or outside the simultaneous reduction device 1 , and stores the second washing water to be sprayed into the second scrubber 200 .

Here, the second washing water is not limited as long as it is a fluid capable of reducing carbon dioxide when in contact with or mixing with carbon dioxide of the pretreatment gas.

The second fluid inlet pipe 232 is connected to the second washing water storage chamber 231 so that the second washing water flows into the inside, and the second fluid inlet pipe 232 is configured to move the second washing water introduced therein to the second nozzle 233 . 2 Provides a path for cleaning water.

One or more second nozzles 233 are provided on one side of the second fluid inlet pipe 232, and the second washing water flowing into the second fluid inlet pipe and moving along the second washing water movement path is treated with a second scrubber ( 200) is sprayed toward the inside.

The second nozzle 133 sprays the second washing water supplied through the second fluid inlet pipe 232 toward the inside of the second scrubber 200, and the second washing water injection method is not limited. The second washing water storage method of the second washing water storage chamber 231, the second washing water movement path providing method of the second fluid inlet pipe 232, and the second washing water spraying method are modified in various ways. The washing water may be sprayed into the second scrubber 200 .

As a specific example, referring to FIG. 4A , the second washing water storage chamber 231 includes a 2-1 washing water storage chamber 231a for storing the 2-1 washing water of the first material and the second washing water storage chamber 231a. It may be implemented as a 2-2 washing water storage chamber 231b for storing the 2-2 washing water of a second material that causes a reaction to reduce carbon dioxide in the pretreatment gas when it is in contact with or mixed with the 2-1 washing water, The 2-1 and 2-2 washing water storage chambers 231a and 231b are connected to the second fluid inlet pipe 232 to supply the 2-1 and 2-2 washing water to the second fluid inlet pipe 232 . ) can be supplied. Accordingly, the second fluid inlet pipe 232 allows the 2-1 washing water for reducing carbon dioxide and the 2-2 washing water to be mixed inside to generate 2-3 washing water of the third material, , the 2-3 washing water may be supplied to the second nozzle 233 . Through this, the second nozzle 233 may reduce the sulfur dioxide gas of the pretreatment gas through the contact between the third material and the pretreatment gas by injecting the 2-3th washing water toward the carbon dioxide of the pretreatment gas.

As another example, referring to FIG. 4B , the second washing water storage chamber 231 is implemented as a second washing water storage chamber 231a and a 2-2 washing water storage chamber 231b as in the above example. , the second fluid inlet pipe 232 allows the second-second cleaning water to be supplied to some of the second nozzles 233a among the plurality of second nozzles 233 and the second-second cleaning to the remaining second nozzles 233b. An inner wall 232c may be formed so that water is supplied, and the inside thereof is provided to the second supply region 232a for supplying the 2-1 washing water to the second nozzle 233a and the second nozzle 233b It may consist of a second supply region 232b for supplying 2-2 washing water, and although not shown in the drawing, some regions are narrowed to improve the movement speed of the 2-1 washing water and the 2-2 washing water. It can be implemented as a widening venturi tube (or an orifice tube). Meanwhile, the injection angle of the second nozzle 233 may be adjusted so that the injection areas of the second nozzles 233a and 233b partially overlap in order to generate a third material for reducing carbon dioxide in the pretreatment gas. Accordingly, the 2-1 and 2-2 washing water may be contacted or mixed in the overlapping injection region to be converted into the 2-3 washing water for reducing sulfur dioxide in the exhaust gas.

The first washing water jetting method of the first washing water jetting unit 130 and the second washing water jetting method of the second washing water jetting unit 230 may be the same or different from each other according to a design change.

For example, when the first washing water jetting unit 130 generates the 1-3 washing water in the first fluid inlet pipe 132 , the second washing water jetting unit 230 may generate the second washing water jetting unit 230 in the same manner. The 2-3 th washing water may be generated in the fluid inlet pipe 132 or the 2-3 th washing water may be generated by overlapping the 2-1 and 2-2 washing water spray regions.

As an opposite example, when the second washing water spraying unit 230 generates 2-3 washing water in the second fluid inlet pipe 232 , the first washing water spraying unit 130 may The 1-3 washing water may be generated in the first fluid inlet pipe 132 or the 1-3 washing water may be generated through overlapping of the 1-1 and 1-2 washing water spray regions.

The second drain unit 250 is provided on the lower side of the second scrubber 200 , preferably on the lower inner wall of the second scrubber 200 , and passes through the second pawling 220 . The second washing water in a droplet state that has fallen downward is drained to the outside. Here, the second washing water in a droplet state means the second washing water in a state in which carbon dioxide is captured.

Also, the second washing water in the droplet state may be the second washing water or the 2-3 washing water according to the implementation method of the second washing water storage chamber 231 .

In the second washing water inducing part 250, one end of the moving surface adjacent to the second draining part 240 is inclined downward relative to the other end, so that the second washing water in a droplet state follows the moving surface of the second draining part 240. induce it to move to

The second washing water guide unit 250 may prevent the second washing water from remaining under the second scrubber 200 through the inclination of the moving surface.

The second demister 260 is provided on the upper side of the second scrubber 200 and the lower side of the gas discharge unit 270 so that the clean gas generated in the second stage reduction unit 20 passes through the gas discharge unit 270 . Remove moisture from the clean gas before it is discharged to the outside.

The gas discharge unit 270 discharges the clean gas to the outside through the gas outlet 271 formed at the uppermost end of the second stage reduction unit 20 .

The control unit 30 is connected to the first stage reduction unit 10 and the second stage reduction unit 20 to control the processes of the first and second stage reduction units 10 and 20 .

Specifically, the control unit 30 may control the supply of the first and second washing water, the drainage of the first and second washing water, whether the exhaust gas is introduced, whether the pretreatment gas is introduced, whether the clean gas is discharged, and the like.

Hereinafter, the simultaneous reduction device 1 according to another embodiment of the present invention will be described in detail with reference to the accompanying drawings.

5 to 6, the simultaneous reduction device 1 according to another embodiment of the present invention is implemented in the same manner as the simultaneous reduction device 1 of the embodiment shown in FIGS. 2 Through drying of the scrubbers 100 and 200, an additional component may be provided to extend the lifetime of the simultaneous reduction device 1 .

Simultaneous reduction device 1 according to another embodiment of the present invention is for discharging some of the clean gas of the clean gas generated by the second scrubber 200 to the first bypass path and the second bypass path rather than to the outside. A clean gas outlet pipe 40 may be provided.

The clean gas outlet pipe 40 may be connected to a clean gas storage chamber (not shown) capable of storing a portion of the clean gas to supply the clean gas to the clean gas storage chamber (not shown).

The clean gas storage chamber (not shown) may be respectively connected to the first drying unit 170 for drying the first scrubber 100 and the second drying unit 280 for drying the second scrubber 200 .

In addition, the clean gas storage chamber (not shown) blocks the exhaust gas inflow and clean gas discharge after the exhaust gas processing process of the first stage reduction unit 10 and the pretreatment gas processing process of the second stage reduction unit 20 are finished. When the control unit 30 controls the simultaneous reduction device 1 to do so, the clean gas may be supplied to the first and second drying units 170 and 280 .

Here, storing the clean gas in the clean gas storage chamber (not shown) is when the clean gas outlet pipe 40 directly supplies clean air to the first and second drying units 170 and 280, processing the exhaust gas and pre-treatment gas This is because the flue gas and the pretreatment gas may be introduced into the first and second drying units 170 and 280 in the process or may flow backward.

The first drying unit 170 has a first clean gas moving pipe 171 so that the clean gas moving along the first bypass path connected to the clean gas storage chamber (not shown) is discharged into the first scrubber 100 . ), a first first circulation induction unit 172 , a first PM filter 173 , and a first blade 174 .

The first clean gas transfer pipe 171 is connected to the clean gas outlet pipe 40 and may provide a first bypass path for the movement of the clean gas.

The first circulation guide unit 172 may be provided inside the first clean gas movement pipe 171 and may include a first screw 172a and a rotation shaft 172b to induce movement of the clean gas.

The first screw 172a is rotated through the rotation shaft 172b, so that the clean gas can be rotated to induce the movement of the clean gas. Here, it is preferable that the clean gas is moved and guided to the first scrubber 100 by the first screw 172a.

The first PM filter 173 is provided at the rear end of the first screw 172a in the inside of the first clean gas moving pipe 171, and the clean gas moves along the first bypass path through the first screw 172a. Particulate Matter (PM) contained in the can be removed.

The first blade 174 is provided at the rear end of the first PM filter 173 among the inside of the first clean gas moving pipe 171 , and the clean gas from which particulate matter is removed by rotating along the rotation axis is removed from the first scrubber 100 . It can be induced to be discharged into the interior of the

The first drying unit 170 may dry the inside of the first scrubber 100 with the clean gas by inducing the clean gas to be discharged into the first scrubber 100 .

The second drying unit 280 includes a second clean gas moving pipe 281 so that the clean gas moving along the second bypass path connected to the clean gas storage chamber (not shown) is discharged into the second scrubber 200 . ), a second circulation induction unit 282 , a second PM filter 283 and a second blade 284 .

The second clean gas moving pipe 281 is connected to the clean gas outlet pipe 40 and may provide a second bypass path for moving the clean gas.

The second circulation guide unit 282 is provided inside the second clean gas moving pipe 281 and may be configured to include a second screw 282a and a rotating shaft 282b to induce the clean gas to move.

The second screw 282a is rotated through the rotation shaft 282b so that the clean gas can be rotated to induce the movement of the clean gas. Here, it is preferable that the clean gas is moved and guided to the second scrubber 200 by the second screw 282a.

The second PM filter 283 is provided at the rear end of the second screw 182a in the inside of the second clean gas pipe 281, and the clean gas moves along the second bypass path through the second screw 182a. Particulate matter contained in can be removed.

The second blade 284 is provided at the rear end of the second PM filter 283 in the inside of the second clean gas moving pipe 281, and the clean gas from which particulate matter is removed by rotating along the rotational axis is used in the second scrubber 200. It can be induced to be discharged into the interior of the

The second drying unit 280 may dry the inside of the second scrubber 200 with the clean gas by inducing the clean gas to be discharged into the second scrubber 200 .

The simultaneous reduction device 1 of another embodiment as described above may dry the inside of the first and second scrubbers 100 and 200 through other means as well as the first and second drying units 170 and 280 .

To this end, although not shown in the drawing, the first and second washing water spraying units 130 and 230 include first and second air storage chambers (not shown) for storing air to dry the inside of the first scrubber 100 . may include more.

In this case, the first fluid inlet pipe 132 may be connected to the first air storage chamber (not shown), and the second fluid inlet pipe 232 may be connected to the second air storage chamber (not shown).

Accordingly, the first nozzle 133 may spray not only the first washing water but also air toward the inside of the first scrubber 100 , and the second nozzle 233 may not only the second washing water but also the second scrubber 200 . ) can be blown toward the inside of the

Here, when the first and second nozzles 133 and 233 inject air toward the inside of the first and second scrubbers 100 and 200, the exhaust gas treatment process of the first stage reduction unit 10 and the second stage reduction After the pretreatment gas treatment process of the unit 20 is completed, it is preferable when the control unit 30 controls the simultaneous reduction device 1 to block the exhaust gas inflow and the clean gas discharge.

In addition, when the first and second nozzles 133 and 233 inject air, the first and second fluid inlet pipes 132 and 232 may be rotated with a rotating means, and the first and second fluid inlet pipes 132 and 232 may be rotated through rotation based on the rotation means. It is possible to adjust the air injection angles of the 1 and 2 nozzles (133, 233).

The first and second fluid inlet pipes 132 and 232 are connected to the lower sides of the first and second scrubbers 100 and 200 as well as the first and second scrubbers by adjusting the air injection angle of the first and second nozzles 133 and 233 . The first and second washing water or contaminants in the form of droplets remaining on the inner wall of the (100, 200) can be easily removed.

Furthermore, when the first and second nozzles 133 and 233 spray air, the first and second drains 140 and 240 not only drain the first and second washing water, but also drain the first and second scrubbers 100 , 200) is preferably discharged to the outside.

The simultaneous reduction device 1 of another embodiment as described above may include a first backflow preventing unit 180 and a second backflow preventing unit 290 for preventing the first and second washing water from flowing back.

The first backflow prevention unit 180 is a first accommodating cover to prevent the first washing water from flowing back into the first gas inlet 111 after moving downward along the moving surface of the first cover 113 by surface tension. 181 and the first rotation shaft 182 may be formed.

Referring to (a) of FIG. 7 , the first accommodation cover 181 is rotated through one or more first rotation shafts 182 coupled to the end of the first cover 113 so that the first washing water is the first scrubber 100 . ) can accommodate the first washing water in a droplet state falling to the upper side of the first cover 113 while being sprayed toward the inside.

At this time, the first accommodating cover 181 may have an accommodating area through rotation to accommodate the first washing water on the upper side of the first cover 113 .

Referring to (b) of FIG. 7 , the first accommodating cover 181 is rotated through the first rotation shaft 182 after the injection of the first washing water is finished, and the first receiving cover 181 is accommodated in the upper side of the first cover 113 . 1 washing water may be dropped to the lower side of the first scrubber 100 .

At this time, the first accommodating cover 181 has a moving surface of the first washing water in a shape extending from the first cover 113 through rotation to induce the first washing water not to flow into the first gas inlet 111 . can

Furthermore, although the first backflow prevention unit 180 is not shown in the drawing, a packing member (not shown) for preventing the first washing water from leaking through the gap between the first accommodation cover 181 and the first cover 113 . may be provided in a space between the first accommodating cover 181 and the first cover 113 .

The second backflow preventing part 290 is a second receiving cover to prevent the second washing water from flowing back into the second gas inlet 211 after moving downward along the moving surface of the second cover 213 by surface tension. 291 and a second rotation shaft 292 may be included.

Referring to (a) of FIG. 7 , the second accommodation cover 291 is rotated through one or more second rotation shafts 292 coupled to the end of the second cover 213 so that the second washing water is the second scrubber 200 . ) can accommodate the second washing water in a droplet state falling to the upper side of the second cover 213 while being sprayed toward the inside.

At this time, the second accommodating cover 291 has an accommodating area through rotation, so that the second washing water can be accommodated on the upper side of the second cover 213 .

Referring to (b) of FIG. 7 , the second receiving cover 291 is rotated through the second rotating shaft 292 after the second washing water is sprayed and the second receiving cover 291 is accommodated in the upper side of the second cover 213 . 2 The washing water can be dropped to the lower side of the second scrubber 200 .

At this time, the second accommodating cover 291 has a moving surface of the second washing water in a shape extending from the second cover 213 through rotation to induce the second washing water not to flow into the second gas inlet 211 . can

Furthermore, the second backflow prevention part 290 is not shown in the drawing, but a packing member (not shown) for preventing the second washing water from leaking through the gap between the second accommodating cover 291 and the second cover 213 . may be provided in a space between the second accommodating cover 291 and the second cover 213 .

The detailed description of the preferred embodiments of the present invention disclosed as described above is provided to enable any person skilled in the art to make and practice the present invention. Although the above has been described with reference to preferred embodiments of the present invention, it will be understood by those skilled in the art that various modifications and changes can be made to the present invention without departing from the scope of the present invention. For example, those skilled in the art can use each configuration described in the above-described embodiments in a way in combination with each other. Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention may be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention. Accordingly, the above detailed description should not be construed as restrictive in all respects but as exemplary. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention. The present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, claims that are not explicitly cited in the claims may be combined to form an embodiment, or may be included as new claims by amendment after filing.

1: simultaneous reduction device, 10: first stage reduction unit,
20: second stage reduction unit, 30: control unit,
40: clean gas outlet pipe, 100: first scrubber,
110: a first gas inlet, 111: a first gas inlet;
112: a first gas inlet pipe, 113: a first cover,
120: a first poling, 130: a first washing water spraying unit,
131: a first washing water storage chamber, 132: a first fluid inlet pipe,
133: a first nozzle, 140: a first drain,
150: a first washing water induction unit, 160: a first demister,
170: a first drying unit, 171: a first clean gas moving pipe,
172: a first circulation guide unit, 172a: a first screw,
172b: rotation shaft, 173: first PM filter,
174: a first wing, 180: a first backflow prevention unit,
181: a first receiving cover, 182: a first rotating shaft,
200: a second scrubber, 210: a second gas inlet,
211: a second gas inlet, 212: a second gas inlet pipe;
213: second cover, 220: second polling;
230: a second washing water spraying unit, 231: a second washing water storage chamber,
232: a second fluid inlet pipe, 233: a second nozzle;
240: a second drain unit, 250: a second washing water induction unit,
260: a second demister, 270: a gas outlet;
271: gas outlet, 280: second drying unit;
281: a second clean gas moving pipe, 282: a second circulation induction unit,
282a: second screw, 282b: rotation shaft;
283: a second PM filter, 284: a second wing,
290: a second backflow prevention part, 291: a second accommodation cover,
292: second axis of rotation.

Claims (11)

In the device for reducing sulfur dioxide and carbon dioxide at the same time,
The first washing water spraying unit injects the first washing water into the exhaust gas injected into the first scrubber from the outside through the first gas inlet in the form of a swirl provided in the first gas inlet, and the sulfur dioxide of the exhaust gas (SO ₂ ) A first stage reduction unit for generating a pre-treatment gas by reducing; and
The second cleaning is provided on the upper side of the first stage reducing unit and passed through the first stage reducing unit through the second gas inlet in the form of a swirl provided in the second gas inlet unit and injected into the second scrubber for a second cleaning. a second stage reduction unit for generating a clean gas by reducing _{carbon dioxide (CO 2} ) in the pretreatment gas by injecting a second washing water by the water injection unit; and
A control unit for controlling the processes of the first stage reducing unit and the second stage reducing unit;
The first washing water spraying unit,
The first washing water in which two or more substances are mixed or the two or more substances are mixed in the injection process of the first washing water to reduce the sulfurous acid gas,
The second washing water spraying unit,
The second washing water in which two or more substances are mixed or the two or more substances are mixed in the injection process of the second washing water to reduce the carbon dioxide,
The first washing water spraying unit,
a first washing water storage chamber for storing the first washing water;
a first fluid inlet pipe connected to the first washing water storage chamber and into which the first washing water is introduced; and
At least one first nozzle provided on one side of the first fluid inlet pipe to spray the first washing water flowing into the first fluid inlet pipe into the first scrubber; includes,
The first washing water spraying unit,
It further includes; a first air storage chamber for storing air to be sprayed from the first nozzle to dry the inside of the first scrubber;
The first fluid inlet pipe,
The first nozzle is provided with a rotating means to remove the first washing water or contaminants in the form of droplets remaining on the inner wall of the first scrubber through the air of the first air storage chamber, the rotation by the rotating means Sulfur dioxide gas and carbon dioxide reduction device, characterized in that for controlling the air injection angle of the first nozzle through the. The method of claim 1,
The first stage reduction unit,
a first demister provided above the first scrubber to prevent the second washing water from flowing back into the first scrubber;
a first pawling provided under the first washing water jetting part to increase a contact area between the first washing water sprayed downward from the first washing water jetting part and the exhaust gas;
a first drain unit provided below the first scrubber to collect the sulfurous acid gas through the first polling and then drain the first washing water in a droplet state that has fallen to the lower side of the first scrubber to the outside; and
a first washing water inducing part for guiding the first washing water in a droplet state to move to the first draining part along the moving surface by tilting one end of the moving surface adjacent to the first draining part in a lower direction relative to the other end of the moving surface; Simultaneous reduction of sulfur dioxide and carbon dioxide, characterized in that it comprises a. delete delete The method of claim 1,
The second stage reduction unit,
a gas discharge unit for discharging the clean gas to the outside through a gas outlet formed on an upper side of the second scrubber; and
a second demister for removing moisture from the clean gas before the clean gas is discharged to the outside through the gas outlet;
a second palling provided under the second washing water spraying part to increase a contact area between the second washing water sprayed downward from the second washing water spraying part and the exhaust gas;
a second drain unit provided under the second scrubber to collect the carbon dioxide through the second polling and then drain the second washing water in a droplet state that has fallen to the lower side of the second scrubber to the outside; and
a second washing water inducing unit in which one end of the moving surface adjacent to the second draining unit is inclined downward relative to the other end of the moving surface to induce the second washing water in a droplet state to move to the second draining unit along the moving surface; Simultaneous reduction of sulfur dioxide and carbon dioxide, characterized in that it comprises a. In the device for reducing sulfur dioxide and carbon dioxide at the same time,
The first washing water spraying unit injects the first washing water into the exhaust gas injected into the first scrubber from the outside through the first gas inlet in the form of a swirl provided in the first gas inlet, and the sulfur dioxide of the exhaust gas (SO ₂ ) A first stage reduction unit for generating a pre-treatment gas by reducing; and
The second cleaning is provided on the upper side of the first stage reducing unit and passed through the first stage reducing unit through the second gas inlet in the form of a swirl provided in the second gas inlet unit and injected into the second scrubber for a second cleaning. a second stage reduction unit for generating a clean gas by reducing _{carbon dioxide (CO 2} ) in the pretreatment gas by injecting a second washing water by the water injection unit; and
A control unit for controlling the processes of the first stage reducing unit and the second stage reducing unit;
The first washing water spraying unit,
The first washing water in which two or more substances are mixed or the two or more substances are mixed in the injection process of the first washing water to reduce the sulfurous acid gas,
The second washing water spraying unit,
The second washing water in which two or more substances are mixed or the two or more substances are mixed in the injection process of the second washing water to reduce the carbon dioxide,
The second washing water spraying unit,
a second washing water storage chamber for storing the second washing water;
a second fluid inlet pipe connected to the second washing water storage chamber into which the second washing water is introduced; and
At least one second nozzle provided on one side of the second fluid inlet pipe to spray the second washing water flowing into the second fluid inlet pipe into the inside of the second scrubber;
The second washing water spraying unit,
It further comprises; a second air storage chamber for storing air to be sprayed from the second nozzle to dry the inside of the second scrubber,
The second fluid inlet pipe,
and a rotating means for the second nozzle to remove the second washing water or contaminants in the form of droplets remaining on the inner wall of the second scrubber through the air of the second air storage chamber, and rotation by the rotating means Sulfur dioxide gas and carbon dioxide reduction device, characterized in that for controlling the air injection angle of the second nozzle through the. delete In the device for reducing sulfur dioxide and carbon dioxide at the same time,
The first washing water spraying unit injects the first washing water into the exhaust gas injected into the first scrubber from the outside through the first gas inlet in the form of a swirl provided in the first gas inlet, and the sulfur dioxide of the exhaust gas (SO ₂ ) A first stage reduction unit for generating a pre-treatment gas by reducing; and
The second cleaning is provided on the upper side of the first stage reducing unit and passed through the first stage reducing unit through the second gas inlet in the form of a swirl provided in the second gas inlet unit and injected into the second scrubber for a second cleaning. a second stage reduction unit for generating a clean gas by reducing _{carbon dioxide (CO 2} ) in the pretreatment gas by injecting a second washing water by the water injection unit; and
A control unit for controlling the processes of the first stage reducing unit and the second stage reducing unit;
The first washing water spraying unit,
The first washing water in which two or more substances are mixed or the two or more substances are mixed in the injection process of the first washing water to reduce the sulfurous acid gas,
The second washing water spraying unit,
The second washing water in which two or more substances are mixed or the two or more substances are mixed in the injection process of the second washing water to reduce the carbon dioxide,
The first stage reduction unit,
When some of the clean gas is stored in the clean gas storage chamber after flowing out from the second scrubber through the clean gas outlet pipe connected to the second stage reduction unit, the clean gas storage chamber and the first scrubber A first drying unit for drying the first scrubber by moving the clean gas stored in the clean gas storage chamber along a first bypass path connecting the
The second stage reduction unit,
When the clean gas is stored in the clean gas storage chamber, the clean gas stored in the clean gas storage chamber is moved along a second bypass path connecting the clean gas storage chamber and the second scrubber to the second scrubber. A second drying unit for drying the sulfur dioxide and carbon dioxide reduction device comprising a. 9. The method of claim 8,
The first drying unit,
a first clean gas moving pipe forming the first bypass path;
a first circulation inducing unit provided inside the first clean gas moving pipe and circulating the clean gas moving along the first bypass path through a first screw to induce movement of the clean gas;
a first PM filter provided at a rear end of the first circulation inducing part among the inside of the first clean gas moving pipe and removing particulate matter (PM) contained in the clean gas rotated by the first circulation inducing part; and
A first wing provided at the rear end of the first PM filter in the interior of the first clean gas pipe and rotating along a rotational axis to induce the clean gas from which the particulate matter has been removed to be discharged to the first scrubber; and Simultaneous reduction of sulfur dioxide gas and carbon dioxide, characterized in that. 9. The method of claim 8,
The second drying unit,
a second clean gas moving pipe forming the second bypass path;
a second circulation inducing unit provided inside the second clean gas moving pipe and circulating the clean gas moving along the second bypass path through a second screw to induce movement of the clean gas;
a second PM filter provided at a rear end of the second circulation inducing part in the inside of the second clean gas moving pipe and removing particulate matter contained in the clean gas rotated by the second circulation inducing part; and
A second wing provided at the rear end of the second PM filter among the inside of the second clean gas pipe, and rotated through a rotation shaft coupled to one side to induce the clean gas from which the particulate matter has been removed to be discharged to the second scrubber. Simultaneous reduction of sulfur dioxide and carbon dioxide, characterized in that it comprises a. In the device for reducing sulfur dioxide and carbon dioxide at the same time,
The first washing water spraying unit injects the first washing water into the exhaust gas injected into the first scrubber from the outside through the first gas inlet in the form of a swirl provided in the first gas inlet, and the sulfur dioxide of the exhaust gas (SO ₂ ) A first stage reduction unit for generating a pre-treatment gas by reducing; and
The second cleaning is provided on the upper side of the first stage reducing unit and passed through the first stage reducing unit through the second gas inlet in the form of a swirl provided in the second gas inlet unit and injected into the second scrubber for a second cleaning. a second stage reduction unit for generating a clean gas by reducing _{carbon dioxide (CO 2} ) in the pretreatment gas by injecting a second washing water by the water injection unit; and
A control unit for controlling the processes of the first stage reducing unit and the second stage reducing unit;
The first washing water spraying unit,
The first washing water in which two or more substances are mixed or the two or more substances are mixed in the injection process of the first washing water to reduce the sulfurous acid gas,
The second washing water spraying unit,
The second washing water in which two or more substances are mixed or the two or more substances are mixed in the injection process of the second washing water to reduce the carbon dioxide,
The sulfur dioxide and carbon dioxide reduction device at the same time,
The first washing water in a droplet state that is rotated through one or more first rotation shafts coupled to the end of the first cover provided on the upper side of the first gas inlet and falls to the upper side of the first cover is applied to the upper side of the first cover a first backflow preventing unit for preventing the first washing water from flowing back into the first gas inlet through a first receiving cover for accommodating it; and
The second washing water in a droplet state that is rotated through one or more second rotation shafts coupled to the end of the second cover provided on the upper side of the second gas inlet and falls to the upper side of the second cover is applied to the upper side of the second cover. and a second backflow prevention unit for preventing the second washing water from flowing back into the second gas inlet through a second receiving cover for accommodating in the sulphite gas and carbon dioxide reduction device at the same time.

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