KR102611937B1 - Exhaust gas treatment apparatus - Google Patents

Abstract

An exhaust gas treatment device is disclosed.
An exhaust gas treatment device according to an embodiment of the present invention includes a gas-liquid reactor in which exhaust gas and a treatment liquid come into contact so that the emission control gas contained in the exhaust gas is absorbed into the treatment liquid and removed; a gas-liquid separation treatment liquid regeneration unit that separates the emission control gas from the waste treatment liquid, which is a treatment liquid that absorbs the emission regulation gas and is drained from the gas-liquid reactor, and regenerates the emission control gas into a treatment liquid; and a gas processing unit that stores and processes the emission control gas separated from the gas-liquid separation treatment liquid regeneration unit. The gas processing unit includes a gas storage tank connected to a gas recovery pipe connected to the gas-liquid separation treatment liquid regeneration unit and storing the emission control gas, and the gas-liquid separation treatment liquid regeneration unit includes the gas-liquid separation treatment. An air inlet pipe communicating with the gas recovery pipe may be connected through the liquid regeneration unit.

Description

EXHAUST GAS TREATMENT APPARATUS}

The present invention relates to an exhaust gas treatment device for treating exhaust gas.

As regulations on exhaust gases emitted from ships are increasingly being strengthened, the need to remove not only sulfur oxides but also carbon dioxide from exhaust gases emitted from ships has emerged.

In order to treat exhaust gas, an exhaust gas treatment device is installed on a ship, and the exhaust gas treatment device can treat the exhaust gas by spraying a treatment liquid into the exhaust gas. Seawater can be used as a treatment liquid in exhaust gas treatment devices. If seawater is used as a treatment liquid, sulfur oxides can be removed from exhaust gas. However, because only a small amount of carbon dioxide can be removed, it was difficult to achieve a carbon dioxide reduction performance that could satisfy the Energy Efficiency Design Index of the International Maritime Organization under the United Nations. In addition, a relatively large amount of seawater is required to treat exhaust gas, which requires equipment to supply and spray a large amount of seawater.

In addition, an aqueous alkaline solution such as an aqueous sodium hydroxide solution can be used as a treatment liquid in an exhaust gas treatment device. Although exhaust gas can be treated with a small amount, it is expensive. In order to reduce costs, the exhaust gas treatment device can regenerate and reuse the waste treatment liquid from which the exhaust gas is treated, but the regeneration rate of the waste treatment liquid in the conventional exhaust gas treatment equipment was low. Accordingly, because the treatment agent must be continuously supplied to the regenerated treatment liquid, the cost was not significantly reduced. In addition, the equipment used to regenerate the waste treatment liquid is a large-scale equipment that can only be applied on land, making it difficult to apply the exhaust gas treatment device to ships.

The present invention has been made in recognition of at least one of the above-mentioned needs or problems arising in the prior art.

One aspect of the purpose of the present invention is to separate the emission control gas from the waste treatment liquid that absorbs the emission control gas contained in the exhaust gas, and then store and process the emission control gas.

An exhaust gas treatment device related to one embodiment for realizing at least one of the above problems may include the following features.

An exhaust gas treatment device according to an embodiment of the present invention includes a gas-liquid reactor that contacts exhaust gas and a treatment liquid so that the emission control gas contained in the exhaust gas is absorbed into the treatment liquid and removed; a gas-liquid separation treatment liquid regeneration unit that separates the emission control gas from the waste treatment liquid, which is a treatment liquid that absorbs the emission regulation gas and is drained from the gas-liquid reactor, and regenerates the emission control gas into a treatment liquid; and a gas processing unit that converts the emission control gas separated in the gas-liquid separation treatment liquid regeneration unit into a natural ionized material. It includes, and the gas processing unit can store and process the emission control gas.

In this case, the gas processing unit may include a gas storage tank in which a gas recovery pipe connected to the gas-liquid separation treatment liquid regeneration unit is connected and in which the emission control gas is stored.

Additionally, in the gas storage tank, the emission control gas can be cooled, compressed, and stored in a liquid state.

In addition, in the gas-liquid separation treatment liquid regeneration unit, a gas-liquid separation membrane through which the emission control gas passes but the waste treatment liquid does not pass through separates the liquid flow path through which the waste treatment liquid flows and the gas flow path through which the emission control gas flows, By creating a low partial pressure of the emission control gas in the gas flow path, the emission control gas contained in the waste treatment liquid of the liquid flow path can pass through the gas-liquid separation membrane and move to the gas flow path.

In addition, a treatment liquid supply tank that supplies a treatment liquid to the gas-liquid reactor and stores the treatment liquid regenerated in the gas-liquid separation treatment liquid regeneration unit; It may further include.

As described above, according to an embodiment of the present invention, the emission control gas can be stored and treated after separating the emission control gas from the waste treatment liquid that has absorbed the emission control gas contained in the exhaust gas.

1 is a diagram showing a first embodiment of an exhaust gas treatment device according to the present invention.
Figure 2 is a diagram showing another embodiment of the gas-liquid separation treatment liquid regeneration unit of the first embodiment of the exhaust gas treatment device according to the present invention.
Figure 3 is a diagram showing one embodiment of a gas processing unit of the first embodiment of the exhaust gas processing device according to the present invention.
Figure 4 is a diagram showing another embodiment of the gas processing unit of the first embodiment of the exhaust gas treatment device according to the present invention.
Figure 5 is a diagram showing a second embodiment of the exhaust gas treatment device according to the present invention.
Figure 6 is a diagram showing a third embodiment of the exhaust gas treatment device according to the present invention.
Figure 7 is a diagram showing a fourth embodiment of the exhaust gas treatment device according to the present invention.

In order to facilitate understanding of the features of the present invention as described above, the exhaust gas treatment device related to the embodiment of the present invention will be described in more detail below.

The embodiments described below will be explained based on the embodiments most suitable for understanding the technical features of the present invention, and the technical features of the present invention are not limited by the described embodiments. This is to illustrate that the present invention can be implemented as in the embodiments. Accordingly, the present invention can be implemented in various modifications within the technical scope of the present invention through the embodiments described below, and these modified embodiments will be considered to fall within the technical scope of the present invention. In addition, in order to facilitate understanding of the embodiments described below, in the symbols shown in the accompanying drawings, related components among components that perform the same function in each embodiment are indicated by numbers on the same or extended lines.

First embodiment of exhaust gas treatment device

Hereinafter, a first embodiment of an exhaust gas treatment device according to the present invention will be described with reference to FIGS. 1 to 4.

Figure 1 is a view showing a first embodiment of an exhaust gas treatment device according to the present invention, and Figure 2 is a view showing another embodiment of the gas-liquid separation treatment liquid regeneration unit of the first embodiment of the exhaust gas treatment device according to the present invention. am.

In addition, Figure 3 is a diagram showing one embodiment of a gas processing unit of the first embodiment of the exhaust gas treatment device according to the present invention, and Figure 4 is a diagram showing an embodiment of the gas processing unit of the first embodiment of the exhaust gas treatment device according to the present invention. This is a drawing showing another embodiment.

The first embodiment of the exhaust gas treatment device according to the present invention may include a gas-liquid reactor 200, a treatment liquid supply tank 300, and a gas-liquid separation treatment liquid regeneration unit 400.

Exhaust gas discharged from an exhaust gas discharge device (not shown) such as an engine or boiler may flow into the gas-liquid reactor 200. Additionally, in the gas-liquid reactor 200, the exhaust gas and the treatment liquid come into contact so that the emission control gas contained in the exhaust gas is absorbed into the treatment liquid and removed. The emission control gas may be, for example, sulfur oxides or carbon dioxide. However, any emission control gas is possible as long as the emissions into the atmosphere, such as nitrogen oxides, are regulated. The gas-liquid reactor 200 may include a housing 210 and a treatment liquid injection unit 220.

Housing 210 may be connected to an exhaust gas discharge device. The housing 210 may be provided with an inlet 211, an outlet 212, and a drain 213. As shown in Figure 1, the inlet 211 is provided on the lower side of the housing 210, the outlet 212 is provided on the upper surface of the housing 210, and the drain 213 is provided on the lower surface of the housing 210. It can be provided. However, the portion of the housing 210 provided with the inlet 211, outlet 212, or drain 213 is not particularly limited.

The inlet 211 may be connected to an exhaust gas discharge device. Accordingly, the exhaust gas discharged from the exhaust gas discharge device may flow inside the housing 210 through the inlet 211 as shown in FIG. 1.

As shown in FIG. 1, the processing liquid may be sprayed inside the housing 210 by the processing liquid spraying unit 220. Accordingly, the exhaust gas flowing into the housing 210 may come into contact with the processing liquid. In this way, when the exhaust gas comes into contact with the treatment liquid, emission control gases, such as sulfur oxides or carbon dioxide, contained in the exhaust gas can be absorbed into the treatment liquid and removed from the exhaust gas. The exhaust gas from which the emission control gas has been removed may be discharged through the outlet 212. In addition, the waste treatment liquid, which is a treatment liquid that has absorbed the emission control gas, can be drained through the drain hole 213.

Packing 230 may be provided inside the housing 210. The contact area and contact time between the exhaust gas and the treatment liquid can be increased by the packing 230. As a result, the treatment efficiency of exhaust gas by the treatment liquid can be improved. Packing 230 may include a plurality of members with a plurality of holes formed therein. In addition to the packing 230, the inside of the housing 210 may be provided with a structure that can increase the contact area and contact time between the exhaust gas and the treatment liquid, such as the packing 230.

The housing 210 may have a square cross-section. The housing 210 may be installed, for example, inside a funnel (not shown) of a ship (not shown). The funnel of a ship may have a square cross-section. And, as described above, if the housing 210 has a square cross-section, when installing the housing 210 in the stack of a ship with a square cross-section, the dead area, which is an unusable space, can be minimized. When installing the housing 210 in the funnel of a ship, the stack may be expanded, for example, toward the bow or stern of the ship. If the cross-sectional shape of the housing 210 is square, the dead area can be minimized when installed in the funnel of a ship with a square cross-section as described above, so the expanded area of the stack for installation of the housing 210 can be minimized. there is. Accordingly, the installation of the housing 210 in the stack of the ship can be easily performed, the time and materials for installation of the housing 210 in the stack can be saved, and the space utilization of the ship can be improved. .

The processing liquid injection unit 220 may spray the processing liquid into the exhaust gas flowing through the housing 210 . The processing liquid injection unit 220 may include a processing liquid flow pipe 221 and a processing liquid injection nozzle 222.

The processing liquid flow pipe 221 may be connected to the processing liquid supply tank 300. As shown in FIG. 1, the processing liquid flow pipe 221 may be connected to the processing liquid supply tank 300 through a processing liquid supply pipe LP. A processing liquid supply pump (PP) may be provided in the treatment liquid supply pipe (LP). And, when the processing liquid supply pump PP is driven, the processing liquid stored in the processing liquid supply tank 300 may flow through the processing liquid flow pipe 221.

The processing liquid flow pipe 221 may penetrate one side of the housing 210 and be provided inside the housing 210 . Additionally, the processing liquid injection nozzle 222 may be provided in a portion of the processing liquid flow pipe 221 provided inside the housing 210. Accordingly, the processing liquid flowing through the processing liquid flow pipe 221 may be injected into the exhaust gas flowing inside the housing 210 as shown in FIG. 1 through the processing liquid injection nozzle 222.

The processing liquid supply tank 300 may supply the processing liquid to the gas-liquid reactor 200. A processing liquid may be stored in the processing liquid supply tank 300. The treatment liquid stored in the treatment liquid supply tank 300 may be, for example, seawater or an alkaline aqueous solution such as an aqueous sodium hydroxide solution. However, the treatment liquid stored in the treatment liquid supply tank 300 is not particularly limited, and is sprayed into the exhaust gas and contacts the exhaust gas to absorb the emission control gas contained in the exhaust gas, and is used in the gas-liquid separation treatment liquid regeneration unit 400. ), as long as the emission control gas can be separated and recycled, any known gas is possible.

One side of the processing liquid supply pipe LP may be connected to the processing liquid supply tank 300 as shown in FIG. 1 . The other side of the treatment liquid supply pipe (LP) may be connected to the treatment liquid flow pipe 221 of the treatment liquid injection unit 220. Then, when the processing liquid supply pump (PP) of the processing liquid supply pipe (LP) is driven, the processing liquid in the processing liquid supply tank 300 can be supplied to the processing liquid injection unit 220 through the processing liquid supply pipe (LP). there is.

One side of the treatment liquid recovery pipe (LR) may be connected to the treatment liquid supply tank 300. The other side of the treatment liquid recovery pipe (LR) may be connected to the gas-liquid separation treatment liquid regeneration unit 400. Additionally, the treatment liquid regenerated in the gas-liquid separation treatment liquid regeneration unit 400 may be supplied to the treatment liquid supply tank 300 through the treatment liquid recovery pipe LR and stored therein, as shown in FIG. 1 .

Meanwhile, as shown in FIG. 1, the treatment agent supply tank 600 may be connected to the treatment liquid recovery pipe LR through the treatment agent supply pipe LT. Accordingly, the treatment agent, for example, an alkaline agent such as sodium hydroxide, stored in the treatment agent supply tank 600 can be supplied to the regenerated treatment liquid flowing through the treatment liquid recovery pipe LR through the treatment agent supply pipe LT. In addition, as shown in Figure 5, the treatment agent supply pipe (LT) is connected to the treatment liquid supply tank 300 rather than the treatment liquid recovery pipe (LR), so that the treatment liquid stored in the treatment liquid supply tank 300 is supplied to the treatment agent supply tank. The treatment agent stored in 600 may also be supplied.

A heat exchanger (HE) may be connected to the treatment liquid supply tank 300 as shown in FIG. 1. The heat exchanger (HE) exchanges heat with the treatment liquid stored in the treatment liquid supply tank 300, and can cool the treatment liquid to a temperature that can relatively well absorb the emission control gas contained in the exhaust gas. The treatment liquid absorbs the emission control gas contained in the exhaust gas in the gas-liquid reactor 200 and becomes a waste treatment liquid, and the temperature may increase due to the hot exhaust gas. In this way, when the waste treatment liquid whose temperature is higher than the treatment liquid before being sprayed into the gas-liquid reactor 200 is regenerated in the gas-liquid separation treatment liquid regeneration unit 400, the regenerated treatment liquid is also regenerated at a temperature higher than that of the treatment liquid before being sprayed into the gas-liquid reactor 200. The temperature may rise higher than that of the treatment liquid. When the processing liquid with an increased temperature is supplied to the processing liquid supply tank 300, the temperature of the processing liquid stored in the processing liquid supply tank 300 increases, and the emission control gas absorption rate of the processing liquid may decrease. However, as described above, if the temperature of the processing liquid stored in the processing liquid supply tank 300 is cooled to a temperature that can relatively well absorb the emission control gas contained in the exhaust gas by the heat exchanger (HE), the processing liquid The emission control gas absorption rate may not decrease.

The gas-liquid separation treatment liquid regeneration unit 400 separates the emission control gas from the waste treatment liquid, which is a treatment liquid that absorbs the emission control gas drained from the gas-liquid reactor 200, regenerates the emission control gas into the treatment liquid, and processes the regenerated treatment liquid. It can be supplied to the liquid supply tank (300). In this way, because the treatment liquid can be recycled and reused, the cost required to treat exhaust gas can be reduced.

As shown in Figure 1, one side of the waste treatment liquid drain pipe (LD) is connected to the drain 213 of the gas-liquid reactor 200, and the other side of the waste treatment liquid drain pipe (LD) is connected to the gas-liquid separation treatment liquid regeneration unit 400. can be connected to Accordingly, the waste treatment liquid drained through the drain 213 of the gas-liquid reactor 200 may flow to the gas-liquid separation treatment liquid regeneration unit 400 through the waste treatment liquid drain pipe (LD). In this case, the waste treatment liquid drain pipe (LD) may be equipped with a booster pump (PB) as shown in FIG. 4.

As shown in FIG. 1, the waste treatment liquid drain pipe (LD) may be equipped with a filtration unit (WTS) that filters and treats pollutants other than emission control gases contained in the waste treatment liquid. Pollutants other than emission control gases contained in waste treatment liquid include, for example, particulate matter and oil. The filtration unit (WTS) can filter pollutants other than emission control gases contained in the waste treatment liquid flowing to the gas-liquid separation treatment liquid regeneration unit 400 through the waste treatment liquid drain pipe (LD). Accordingly, for example, particulate matter, oil, etc. contained in the waste treatment liquid are filtered by the filtration treatment unit (WTS), thereby minimizing the contaminants contained in the treatment liquid regenerated in the gas-liquid separation treatment liquid regeneration unit 400. As a result, the performance of the gas-liquid separation membrane 420 included in the gas-liquid separation treatment liquid regeneration unit 400 can be protected. The filtration unit (WTS) can filter particulate matter, oil, etc. from waste treatment liquid using, for example, a filter (not shown) or centrifugal force. However, the configuration in which the filtration unit (WTS) filters particulate matter, oil, etc. from the waste treatment liquid is not particularly limited, and any known configuration is possible.

As shown in Figure 1, one side of the treatment liquid recovery pipe (LR) may be connected to the gas-liquid separation treatment liquid regeneration unit 400, and the other side of the treatment liquid recovery pipe (LR) may be connected to the treatment liquid supply tank 300. there is. Accordingly, the treatment liquid regenerated in the gas-liquid separation treatment liquid regeneration unit 400 can be supplied to the treatment liquid supply tank 300 through the treatment liquid recovery pipe LR and reused as a treatment liquid.

The gas-liquid separation treatment liquid regeneration unit 400 includes a gas-liquid separation membrane 420 through which gas passes but liquid does not pass, and the gas-liquid separation membrane 420 has a liquid flow path 411 through which the waste treatment liquid flows and an emission control gas. The flowing gas flow path 412 can be divided. The emission control gas passes through the gas-liquid separation membrane 420 of the present invention, but the waste treatment liquid does not pass through the gas-liquid separation membrane 420.

In addition, a low partial pressure of the emission control gas is formed in the gas flow path 412, so that the emission control gas absorbed in the waste treatment liquid flows through the liquid flow path 411 and passes through the gas-liquid separation membrane 420, thereby creating a low partial pressure of the emission control gas. It can be moved to the formed gas flow path 412 and separated into emission control gas and treatment liquid. Low emission control gas partial pressure means a state in which the concentration of emission control gas is low. Taking carbon dioxide among the emission control gases as an example, the concentration of carbon dioxide is low in the gas flow path 412, and a low partial pressure of carbon dioxide is formed. The lower the partial pressure, the lower the solubility of the gas in the liquid, so the emission control gas absorbed in the waste treatment liquid flows through the liquid flow passage 411 and passes through the gas-liquid separation membrane 420, forming a low emission control gas partial pressure. It moves to (412). To create a low emission control gas partial pressure, negative pressure can be applied or the emission control gas can be diluted with sweeping air. In this way, the emission control gas absorbed in the waste treatment liquid flows through the liquid flow path 411, passes through the gas-liquid separation membrane 420, and moves to the gas flow path 412 where a low emission regulation gas partial pressure is formed, and the waste treatment liquid The emission control gas can be easily separated from.

By using a gas-liquid separation membrane 420 through which gas passes but not liquid, and by forming a low partial pressure of the emission control gas in the gas flow path 412 partitioned by the gas-liquid separation membrane 420, the emission control gas is separated from the waste treatment liquid. Thus, the waste treatment liquid can be regenerated into a treatment liquid that does not absorb emission control gases. When using this method, the amount of treatment agent to be supplied to the recycled treatment liquid can be reduced, so the cost required to regenerate the waste treatment liquid can be reduced. Accordingly, the cost required to treat exhaust gas can be reduced. In addition, since the size of the gas-liquid separation treatment liquid regeneration unit 400 can be relatively small, the size of the exhaust gas treatment device 100 can be small, so that exhaust gas treatment can be performed in places where installation space is limited, such as on ships. The device 100 can be easily installed.

The gas-liquid separation treatment liquid regeneration unit 400 may be configured to include a separation unit main body 410 as shown in FIG. 1. The interior of the separation unit main body 410 may be divided into a liquid flow path 411 and a gas flow path 412 by a gas-liquid separation membrane 420.

As shown in Figure 1, the waste treatment liquid drain pipe (LD) connected to the drain 213 of the gas-liquid reactor 200 is connected to one side of the liquid flow path 411, and the other side of the liquid flow path 411 is treated. It can be connected to the treatment liquid supply tank 300 through a liquid recovery pipe (LR). Accordingly, the waste treatment liquid drained through the drain hole 213 of the gas-liquid reactor 200 may flow into the liquid flow path 411 and flow through the liquid flow path 411. And, while flowing through the liquid flow path 411, the treatment liquid recovered from the separation of the emission control gas flows into the treatment liquid recovery pipe (LR) and flows into the treatment liquid supply tank 300 through the treatment liquid recovery pipe (LR). can do.

As shown in FIG. 1, a gas recovery pipe (LG) equipped with a vacuum pump (PV) may be connected to one side of the gas flow path 412. Accordingly, when the vacuum pump (PV) is driven, a low emission control gas partial pressure may be formed in the gas flow path 412. Additionally, an air inlet pipe (LA) equipped with a flow control valve (VC) may be connected to the other side of the gas flow path 412. As a result, while the vacuum pump (PV) is driven, the flow control valve (VC) is operated to control the flow rate of air flowing into the air inlet pipe (LA), thereby reducing the low pressure formed in the gas flow path 412. The partial pressure of the emission control gas can be adjusted.

The gas-liquid separation membrane 420 may be a hollow fiber membrane with a gas flow path 412 formed thereon, as shown in FIG. 1 . As a result, the internal space of the separation unit main body 410 other than the gas-liquid separation membrane 420 can become the liquid flow path 411. In addition, the gas-liquid separation membrane 420 may be a hollow fiber membrane with a liquid flow path 411 formed thereon, as shown in FIG. 2 . In this case, the internal space of the separation unit main body 410 other than the gas-liquid separation membrane 420 may become the gas flow path 412. However, the gas-liquid separation membrane 420 is not particularly limited, and the emission control gas passes through, but the waste treatment liquid does not pass through, and the liquid flow passage 411 through which the waste treatment liquid flows inside the separation unit main body 410 and the discharge regulation. Any well-known material such as a flat membrane can be used as long as it can be divided into a gas flow path 412 through which gas flows.

When high-sulfur fuel is used in an exhaust gas discharge device, the exhaust gas discharged from the exhaust gas discharge device contains relatively large amounts of sulfur oxides. In this way, when exhaust gas containing a lot of sulfur oxides flows into the housing 210 of the gas-liquid reactor 200, the treatment liquid sprayed into the exhaust gas by the treatment liquid injection unit 220 removes the sulfur oxides contained in the exhaust gas. is mainly removed from exhaust gas. That is, in the gas-liquid reactor 200, the exhaust gas is desulfurized by the treatment liquid. In this way, the waste treatment liquid from which sulfur oxides are removed from the exhaust gas contains sulfur oxides, and in the gas-liquid separation treatment liquid regeneration unit 400, emission control gases, which are sulfur oxides such as sulfur dioxide, are separated from the waste treatment liquid.

When low-sulfur fuel is used in an exhaust gas discharge device, the exhaust gas discharged from the exhaust gas discharge device contains relatively little sulfur oxides. In this way, when exhaust gas containing a small amount of sulfur oxides flows into the housing 210 of the gas-liquid reactor 200, the treatment liquid injected into the exhaust gas by the treatment liquid injection unit 220 removes carbon dioxide contained in the exhaust gas. It is mainly removed from exhaust gases. In this way, the waste treatment liquid from which carbon dioxide is removed from the exhaust gas contains carbon dioxide, and carbon dioxide is separated from the waste treatment liquid in the gas-liquid separation treatment liquid regeneration unit 400.

The first embodiment of the exhaust gas treatment device 100 according to the present invention may further include a gas processing unit 500. The gas processing unit 500 can process the emission control gas separated from the waste treatment liquid in the gas-liquid separation treatment liquid regeneration unit 400.

The gas processing unit 500 can process the emission control gas by dissolving it in seawater in an environmentally friendly ion state. For example, in the gas processing unit 500, carbon dioxide, which is an emission control gas, can be treated by dissolving it in seawater with environmentally friendly ionized substances in their natural state, such as carbonic acid, bicarbonate, and carbonate. In the case of sulfur oxides, they can be treated in their natural state, such as sulfuric acid and sulfate. It is an eco-friendly ionizing material that can be treated by dissolving it in seawater.

To this end, the gas processing unit 500 may include a seawater flow pipe 510 through which seawater flows and a gas recovery pipe (LG) connected to the gas-liquid separation treatment liquid regeneration unit 400, as shown in FIG. 3. there is. This seawater flow pipe 510 may be, for example, a cooling water pipe, a ballast water pipe, a sea chest, etc. provided on a ship. However, the seawater flow pipe 510 is not particularly limited, and any known pipe can be used as long as it is one through which seawater flows.

The portion of the seawater flow pipe 510 to which the gas recovery pipe (LG) is connected may be branched into a plurality of parts as shown in FIG. 3. In addition, the gas recovery pipe (LG) may be branched and connected to each portion of the branched seawater flow pipe 510.

As described above, when the seawater flow pipe 510 is branched into a plurality, the flow rate of seawater is reduced, thereby ensuring sufficient time for the emission control gas to be dissolved in seawater in an environmentally friendly ion state. Dissolution in seawater in an environmentally friendly ionic state can be achieved better. Additionally, as shown in Figure 3, the seawater flow pipe 510 may be equipped with a pressure control device (VCP). As a result, by increasing the pressure of the seawater flowing through the seawater flow pipe 510, the emission control gas can be easily dissolved in seawater in an environmentally friendly ion state.

As shown in FIG. 3, the gas processing unit 500 may further include a microbubble generator 520 provided in the seawater flow pipe 510 to be connected to the gas recovery pipe (LG). The fine bubble generator 520 can allow the emission control gas to be mixed with seawater flowing through the seawater flow pipe 510 as fine bubbles. For example, a plurality of fine holes 521 are formed in the fine bubble generator 520, so that the emission control gas flowing through the gas recovery pipe (LG) passes through the fine holes 521 and flows through the seawater flow pipe 510 as fine bubbles. It can be mixed with seawater. In this way, when the emission control gas is mixed with the seawater flowing through the seawater flow pipe 510 as fine bubbles, the emission control gas can be better dissolved in seawater in an environmentally friendly ion state.

The gas processing unit 500 may further include a gas mixer 530. As shown in FIG. 3, the gas mixer 530 may be installed in the part of the seawater flow pipe 510 next to the microbubble generator 520 in the direction of seawater flow. In addition, the emission control gas bubbles generated in the fine bubble generator 520 and supplied to the seawater flowing through the seawater flow pipe 510 can be mixed with the seawater. For example, the gas mixer 530 may be provided so that the screw-shaped mixing member 531 rotates so that the emission control gas bubbles supplied to the seawater of the seawater flow pipe 510 and the seawater are mixed. Accordingly, the environmentally friendly ion state of the emission control gas can be better dissolved in seawater.

As described above, the branched seawater flow pipe 510 can be reassembled and connected to the ocean (SEA) as shown in FIG. 3. Accordingly, seawater in which the emission control gas is dissolved in an eco-friendly ion state can be discharged into the ocean (SEA). As shown in FIG. 3, a water quality measurement sensor (SP) may be installed in the portion of the seawater flow pipe 510 through which seawater in which the emission control gas is dissolved in an environment-friendly ion state is discharged to the sea (SEA).

In addition, the gas processing unit 500 may treat the emission control gas by dissolving it in an environment-friendly ion state in fresh water flowing through a fresh water flow pipe (not shown).

Meanwhile, the gas processing unit 500 can store and process the emission control gas separated from the waste treatment liquid in the gas-liquid separation treatment liquid regeneration unit 400. In some areas of the ocean (SEA), zero discharge conditions are required in which no substances are discharged from ships. Therefore, in cases such as when a ship operates in such an area, the gas processing unit 500 can store the emission control gas separated from the waste treatment liquid in the gas-liquid separation treatment liquid regeneration unit 400. In this way, the emission control gas stored in the gas processing unit 500 can be supplied to the user.

As shown in FIG. 4, the gas processing unit 500 may include a gas storage tank 540 to which a gas recovery pipe (LG) is connected to store the emission control gas.

The emission control gas separated from the waste treatment liquid in the gas-liquid separation treatment liquid regeneration unit 400 may be stored in the gas storage tank 540 through the gas recovery pipe (LG). In the gas storage tank 540, the emission control gas can be liquefied by cooling and compressing it, thereby storing the emission control gas in a liquid state. In this way, the emission control gas stored in a liquid state in the gas storage tank 540 can be supplied to the user.

Second embodiment of exhaust gas treatment device

Hereinafter, a second embodiment of the exhaust gas treatment device according to the present invention will be described with reference to FIG. 5.

Figure 5 is a diagram showing a second embodiment of the exhaust gas treatment device according to the present invention.

Here, the second embodiment of the exhaust gas treatment device according to the present invention is the first embodiment of the exhaust gas treatment device according to the present invention described with reference to FIGS. 1 to 4, and the exhaust gas treatment device 200 from the gas-liquid reactor 200. The difference is that sulfur oxides contained in the gas are absorbed and removed by the first treatment liquid, and carbon dioxide contained in the exhaust gas from which the sulfur oxides have been removed is absorbed and removed by the second treatment liquid. For this purpose, a first removal region (RR1) in the gas-liquid reactor 200 where sulfur oxides are removed by contact between the exhaust gas and the first treatment liquid, and a second removal region (RR1) where carbon dioxide is removed by contact between the exhaust gas and the second treatment liquid. The difference is that a removal area (RR2) and a connection area (RC) connecting the first removal area (RR1) and the second removal area (RR2) are provided.

Therefore, the following description will focus on the differentiated parts, and the remaining components can be replaced with those described with reference to FIGS. 1 to 4 above.

In the gas-liquid reactor 200 of the second embodiment of the exhaust gas treatment device 100 according to the present invention, sulfur oxides contained in the exhaust gas are absorbed and removed in the first treatment liquid, and carbon dioxide contained in the exhaust gas from which the sulfur oxides have been removed is removed. may be absorbed into the second treatment liquid and removed.

If a treatment solution, for example an aqueous alkaline solution, is sprayed onto exhaust gas containing both sulfur oxides and carbon dioxide, sulfur oxides can first be removed from the exhaust gas. Therefore, to remove carbon dioxide from exhaust gas, sulfur oxides contained in the exhaust gas must first be removed. As described above, when the first treatment liquid absorbs and removes sulfur oxides contained in the exhaust gas and the second treatment liquid absorbs and removes carbon dioxide contained in the exhaust gas from which the sulfur oxides have been removed, sulfur oxides and All carbon dioxide can be removed. And, even when the exhaust gas contains a small amount of sulfur oxides, the carbon dioxide removal rate can be further improved because the sulfur oxides can be removed first.

The gas-liquid reactor 200 includes a first removal region (RR1) where sulfur oxides are removed through contact between the exhaust gas and the first treatment liquid, and a second removal region (RR2) where carbon dioxide is removed through contact between the exhaust gas and the second treatment liquid. ) and a connection area (RC) connecting the first removal area (RR1) and the second removal area (RR2) may be provided.

To this end, the housing 210 of the gas-liquid reactor 200 has a first removal area (RR1), a second removal area (RR2), and a connection area on the inside by a plurality of partition walls (WD) as shown in FIG. 5. It can be divided into (RC).

In this case, a plurality of partition walls (WD) are provided so that exhaust gas flows from the bottom to the top in the first removal area (RR1) and the second removal area (RR2) and from the top to the bottom in the connection area (RC). ) may be provided inside the housing 210.

For example, as shown in Figure 5, two partition walls (WD) are provided inside the housing 210, and the inside of the housing 210 is divided into a first removal area (RR1), a second removal area (RR2), and It can be divided into connection areas (RC). That is, one partition wall WD partitions the inside of the housing 210 into the first removal area RR1 and a part of the connection area RC, and the other partition wall WD partitions the inside of the housing 210 into the first removal area RR1. 2 The remainder of the connection area (RC) can be divided while dividing into a removal area (RR2).

In addition, the partition wall (WD) dividing a portion of the first removal area (RR1) and the connection area (RC) is located inside the housing 210 so that its upper end is spaced a predetermined distance from the upper end of the housing 210 as shown in FIG. 5. It can be provided in . Additionally, the partition wall WD dividing the second removal area RR2 from the remainder of the connection area RC may be provided inside the housing 210 so that its lower end is spaced a predetermined distance from the lower end of the housing 210.

Additionally, the inlet 211 connected to the exhaust gas discharge device may be connected to the first removal area RR1, and the outlet 212 may be connected to the second removal area RR2. In addition, the housing 210 is provided with a first drain 213' and a second drain 213", and the first drain 213' is connected to the first removal area RR1 and the second drain 213 ") may be connected to the second removal region (RR2).

As a result, sulfur oxides or carbon dioxide can be removed while the exhaust gas flows from the bottom to the top in both the first removal area (RR1) and the second removal area (RR2), and in the connection area (RC), the first removal area (RR2) can be removed. The exhaust gas from which sulfur oxides have been removed in (RR1) may flow from the top to the bottom and flow into the second removal region (RR2).

In addition, the gas-liquid separation treatment liquid regeneration unit 400 has a pretreatment configuration and a treatment liquid recovery configuration connected to the gas-liquid separation treatment liquid regeneration unit 400 for recycling of the waste treatment liquid, and a configuration connected to a gas recovery pipe for separating carbon dioxide. may include.

As shown in FIG. 5, the gas-liquid reactor 200 of the second embodiment of the exhaust gas treatment device 100 according to the present invention includes a first treatment liquid injection unit 220' and a second treatment liquid injection unit 220. ") may be included.

The first treatment liquid injection unit 220 ′ may spray the first treatment liquid to the exhaust gas flowing in the first removal area RR1 of the housing 210 . As shown in FIG. 5, the first treatment liquid injection unit 220' may include a first treatment liquid flow pipe 221' and a first treatment liquid injection nozzle 222'.

The first treatment liquid flow pipe 221' may pass through one side of the housing 210 and be provided in the first removal area RR1. Additionally, the first treatment liquid injection nozzle 222' may be provided in a portion of the first treatment liquid flow pipe 221' provided in the first removal area RR1.

There may be a plurality of first treatment liquid injection units 220'. In this case, a plurality of first treatment liquid injection units 220' may be arranged at predetermined intervals up and down. In addition, the first treatment liquid injection unit 220' at the bottom can perform pretreatment to remove some sulfur oxides from the exhaust gas while cooling the temperature of the exhaust gas using the first treatment liquid to facilitate removal of sulfur oxides and carbon dioxide. . In addition, the remaining first treatment liquid injection unit 220' can perform post-processing to remove the remaining sulfur oxides from the exhaust gas. For example, there may be two first treatment liquid injection units 220' as shown in FIG. 5. However, the number of first treatment liquid injection units 220' is not particularly limited, and any number is possible.

The first treatment liquid may be seawater. In this case, as shown in FIG. 5, the first treatment liquid supply pipe (LP') connected to the sea (SEA) may be connected to the first treatment liquid flow pipe 221' of the first treatment liquid injection unit 220'. . A first treatment liquid supply pump (PP') may be provided in the first treatment liquid supply pipe (LP'). Additionally, a first waste treatment liquid drain pipe LD' connected to the sea (SEA) may be connected to the first drain 213' connected to the first removal area RR1 of the housing 210.

Accordingly, when the first treatment liquid supply pump PP' is driven, seawater flows as the first treatment liquid through the first treatment liquid flow pipe 221' of the first treatment liquid injection unit 220', thereby performing the first treatment. The liquid may be injected into the exhaust gas flowing through the first removal area RR1 of the housing 210 through the liquid injection nozzle 222'. In addition, the first waste treatment liquid, which is seawater that is sprayed into the first removal area (RR1) of the housing 210 and absorbs sulfur oxides from the exhaust gas, is sent to the sea (SEA) through the first waste treatment liquid drain pipe (LD'). It can be drained. The first waste treatment liquid drain pipe (LD') is equipped with a water treatment unit (not shown), so that the first waste treatment liquid, which is seawater that has absorbed sulfur oxides from exhaust gas, is treated and then drained into the sea (SEA). there is.

The second treatment liquid injection unit 220" can spray the second treatment liquid into the exhaust gas flowing in the second removal region RR2 of the housing 210. The second treatment liquid injection unit 220" As shown in Figure 5, it may include a second treatment liquid flow pipe 221" and a second treatment liquid injection nozzle 222".

The second treatment liquid flow pipe 221" may penetrate the other side of the housing 210 and be provided in the second removal area RR2. And, the second treatment liquid injection nozzle 222" may be provided in the second removal area (RR2). It may be provided in a portion of the second treatment liquid flow pipe 221" provided in RR2).

The treatment liquid supply tank 300 of the second embodiment of the exhaust gas treatment device 100 according to the present invention can supply the second treatment liquid to the gas-liquid reactor 200. To this end, the second treatment liquid is stored in the treatment liquid supply tank 300, and the second treatment liquid supply pipe (LP") connected to the treatment liquid supply tank 300 is connected to the second treatment liquid injection unit 220". 2It can be connected to the treatment liquid flow pipe (221").

A second treatment liquid supply pump (PP") may be provided in the second treatment liquid supply pipe (LP"). Then, when the second treatment liquid supply pump (PP") is driven, the second treatment liquid stored in the treatment liquid supply tank 300 flows into the second treatment liquid flow pipe 221" of the second treatment liquid injection unit 220". may flow and be injected into the exhaust gas flowing through the second removal region RR2 of the housing 210 through the second treatment liquid injection nozzle 222".

The second treatment liquid may be an alkaline aqueous solution such as an aqueous sodium hydroxide solution.

Gas-liquid separation treatment liquid of the second embodiment of the exhaust gas treatment device 100 according to the present invention In the regeneration unit 400, carbon dioxide is separated from the second waste treatment liquid, which is the second treatment liquid that absorbs carbon dioxide, drained from the gas-liquid reactor 200, and regenerated into the second treatment liquid. The recycled second treatment liquid is used as the treatment liquid. It can be supplied to the supply tank 300.

For this purpose, the gas-liquid separation treatment solution The gas-liquid separation membrane 420 of the regeneration unit 400 may pass carbon dioxide but not the second waste treatment liquid. In addition, the second waste treatment liquid drain pipe (LD") connected to the gas-liquid reactor 200 is connected to the gas-liquid separation treatment liquid. It may be connected to one side of the liquid flow path 411 of the regeneration unit 400. For example, as shown in Figure 5, the second waste treatment liquid drain pipe (LD") is connected to the second drain port (213") connected to the second removal region (RR2) of the gas-liquid reactor 200, and the second waste treatment liquid drain pipe (LD") The liquid drain pipe (LD") is used for gas-liquid separation treatment. It may be connected to one side of the liquid flow path 411 of the regeneration unit 400. Additionally, the other side of the liquid flow path 411 may be connected to the treatment liquid supply tank 300 through the treatment liquid recovery pipe LR.

Accordingly, the second waste treatment liquid drained through the second drain (213") of the gas-liquid reactor 200 is a gas-liquid separation treatment liquid through the second waste treatment liquid drain pipe (LD"). While flowing through the liquid flow path 411 of the regeneration unit 400, carbon dioxide may be separated and recycled as a second treatment liquid. The second treatment liquid regenerated in this way can be supplied to the treatment liquid supply tank 300 through the treatment liquid recovery pipe LR.

And, gas-liquid separation treatment liquid Carbon dioxide separated from the second waste treatment liquid flowing through the liquid flow path 411 of the regeneration unit 400 and moved to the gas flow path 412 passes through the gas recovery pipe (LG) connected to the gas flow path 412. It can be processed by flowing to the gas processing unit 500.

Third embodiment of exhaust gas treatment device

Hereinafter, a third embodiment of the exhaust gas treatment device according to the present invention will be described with reference to FIG. 6.

Figure 6 is a diagram showing a third embodiment of the exhaust gas treatment device according to the present invention.

Here, the third embodiment of the exhaust gas treatment device according to the present invention is the second embodiment of the exhaust gas treatment device according to the present invention described with reference to FIG. 5 and the treatment liquid supply tank 300 is a gas-liquid reactor ( 200), supplying the first treatment liquid and the second treatment liquid respectively, and regenerating the first waste treatment liquid into the first treatment liquid. A regeneration unit 400' and a second gas-liquid separation treatment liquid that regenerates the second waste treatment liquid into a second treatment liquid. The difference is that it includes a playback unit (400").

Therefore, the following will focus on the differentiated parts, and the remaining components can be replaced with those described with reference to FIGS. 1 to 5 above.

The treatment liquid supply tank 300 of the third embodiment of the exhaust gas treatment device 100 according to the present invention can supply the first treatment liquid and the second treatment liquid to the gas-liquid reactor 200, respectively.

To this end, as shown in FIG. 6, the inside of the treatment liquid supply tank 300 includes a first storage area (SS1) in which the first treatment liquid is stored and a second storage area (SS2) in which the second treatment liquid is stored. It can be divided by a partition wall (WD).

In addition, the first storage area (SS1) is connected to the first treatment liquid injection unit 220' of the gas-liquid reactor 200 through the first treatment liquid supply pipe (LP'), and the second storage area (SS2) is connected to the first treatment liquid injection unit 220' of the gas-liquid reactor 200. It may be connected to the second treatment liquid injection unit 220" of the gas-liquid reactor 200 through the second treatment liquid supply pipe (LP").

Accordingly, when the first treatment liquid supply pump PP' provided in the first treatment liquid supply pipe LP' is driven, the first treatment liquid in the first storage area SS1 is supplied to the first treatment liquid supply pipe LP'. ) can be supplied to the first treatment liquid injection unit 220'. The first treatment liquid supplied to the first treatment liquid injection unit 220' may be injected into the exhaust gas flowing through the first removal region RR1 of the gas-liquid reactor 200.

And, when the second treatment liquid supply pump (PP") provided in the second treatment liquid supply pipe (LP") is driven, the second treatment liquid in the second storage area (SS2) is supplied to the second treatment liquid supply pipe (LP"). It can be supplied to the second treatment liquid injection unit 220". The second treatment liquid supplied to the second treatment liquid injection unit 220" may be injected into the exhaust gas flowing through the second removal region RR2 of the gas-liquid reactor 200.

Meanwhile, there are a plurality of first treatment liquid injection units 220', and packing 230 may be provided in a portion of the first removal area RR1 between the plurality of first treatment liquid injection units 220'. For example, as shown in FIG. 6, two first treatment liquid injection units 220' are arranged at a predetermined distance above and below, and a first removal area ( Packing 230 may be provided in the portion of RR1).

First gas-liquid separation treatment liquid In the regeneration unit 400', sulfur oxides are separated from the first waste treatment liquid, which is the first treatment liquid drained from the gas-liquid reactor 200, and which absorbs sulfur oxides, and are regenerated into the first treatment liquid. Can be supplied to the treatment liquid supply tank 300.

For this purpose, the first gas-liquid separation treatment liquid In the regeneration unit 400', the first gas-liquid separation membrane 420', which allows sulfur oxides to pass through but not the first waste treatment liquid, is connected to the first liquid flow path 411' through which the first waste treatment liquid flows and the sulfur oxides. This flowing first gas flow path 412' can be divided. In addition, a low sulfur oxide partial pressure is formed in the first gas flow path 412', so that sulfur oxides contained in the first waste treatment liquid of the first liquid flow path 411' are formed in the first gas-liquid separation membrane 420'. It can be allowed to pass through and move to the first gas flow path 412'.

First gas-liquid separation treatment liquid The regeneration unit 400' is a first separation unit body 410' whose internal space is divided into a first liquid flow path 411' and a first gas flow path 412' by a first gas-liquid separation membrane 420'. ) may further be included. In addition, the first waste treatment liquid drain pipe (LD') connected to the first drain 213' of the gas-liquid reactor 200 is connected to one side of the first liquid flow path 411', and the first liquid flow path 411 ') may be connected to the first storage area (SS1) of the treatment liquid supply tank 300 through the first treatment liquid recovery pipe (LR'). In addition, a first gas recovery pipe (LG') equipped with a vacuum pump (PV) is connected to one side of the first gas flow path (412') to form a low sulfur oxide partial pressure in the first gas flow path (412'). It can be done as much as possible. In addition, the sulfur oxide partial pressure formed in the first gas flow path 412' is connected to the first air inlet pipe (LA') equipped with a flow control valve (VC) on the other side of the first gas flow path (412'). can be adjusted. And, the first gas-liquid separation membrane 420' may be a hollow fiber membrane on which a first gas flow path 412' or a first liquid flow path 411' is formed.

Second gas-liquid separation treatment liquid The regeneration unit 400" separates carbon dioxide from the second waste treatment liquid, which is the second treatment liquid that absorbs carbon dioxide, drained from the gas-liquid reactor 200, regenerates it into the second treatment liquid, and processes the regenerated second treatment liquid. It can be supplied to the liquid supply tank (300).

For this purpose, the second gas-liquid separation treatment solution In the regeneration unit (400"), a second gas-liquid separation membrane (420") through which carbon dioxide passes but not the second waste treatment liquid flows, and a second liquid flow path (411") through which the second waste treatment liquid flows and carbon dioxide flows. The second gas flow path (412") can be divided. In addition, a low carbon dioxide partial pressure is formed in the second gas flow path 412", so that the carbon dioxide contained in the second waste treatment liquid of the second liquid flow path 411" passes through the second gas-liquid separation membrane 420". This allows it to move to the second gas flow path (412").

Second gas-liquid separation treatment liquid The regeneration unit (400") is a second separation unit body (410") whose internal space is divided into a second liquid flow path (411") and a second gas flow path (412") by a second gas-liquid separation membrane (420"). ) may further include. In addition, the second waste treatment liquid drain pipe (LD") connected to the second drain port (213") of the gas-liquid reactor 200 is connected to one side of the second liquid flow path (411"), , the other side of the second liquid flow path 411" may be connected to the second storage area SS2 of the treatment liquid supply tank 300 through the second treatment liquid recovery pipe LR". In addition, a second gas recovery pipe (LG") equipped with a vacuum pump (PV) is connected to one side of the second gas flow path (412") to form a low carbon dioxide partial pressure in the second gas flow path (412"). In addition, a second air inlet pipe (LA") equipped with a flow control valve (VC) is connected to the other side of the second gas flow path 412" to form the second gas flow path 412". The low partial pressure of carbon dioxide can be adjusted. And, the second gas-liquid separation membrane 420" may be a hollow fiber membrane on which a second gas flow path 412" or a second liquid flow path 411" is formed.

The first treatment liquid and the second treatment liquid may be an aqueous alkaline solution such as an aqueous sodium hydroxide solution. In this case, an alkaline agent such as sodium hydroxide is stored in the treatment agent supply tank 600, and the treatment agent supply tank 600 is a treatment liquid supply tank ( It is connected to the first storage area (SS1) and the second storage area (SS2) of 300), and an alkaline agent can be supplied as a treatment agent.

However, the first treatment liquid and the second treatment liquid may be different from each other.

Additionally, each of the first gas recovery pipe (LG') and the second gas recovery pipe (LG") may be connected to the gas processing unit 500.

Fourth embodiment of exhaust gas treatment device

Hereinafter, a fourth embodiment of the exhaust gas treatment device according to the present invention will be described with reference to FIG. 7.

Figure 7 is a diagram showing a fourth embodiment of the exhaust gas treatment device according to the present invention.

Here, the fourth embodiment of the exhaust gas treatment device according to the present invention is the gas-liquid reactor ( The difference is that the cross section of the housing 210 of 200 is circular or oval.

Therefore, the following will focus on explaining the differences, and the remaining configurations can be replaced with those described with reference to FIGS. 1 to 6 above.

In the fourth embodiment of the exhaust gas treatment device 100 according to the present invention, the cross section of the housing 210 of the gas-liquid reactor 200 may be circular or oval. Thereby, the housing 210 may be cylindrical or elliptical as shown in Figure 7. The first removal area (RR1) is located at the outermost part in the radial direction inside the housing 210, the connection area (RC) is located inside the first removal area (RR1), and the second removal area (RR2) is It may be located inside the connection region (RC). To this end, the first removal area RR1 and the connection area RC may have an annular cross section, and the second removal area RR2 may have a circular or oval shape. Accordingly, the exhaust gas can flow smoothly and the exhaust gas may not flow biased to one side, so the exhaust gas can be treated more smoothly.

A plurality of cylindrical or elliptical partition walls (WD) are provided inside the housing 210 to divide the inside of the housing 210 into a first removal area (RR1), a connection area (RC), and a second removal area (RR2). You can. For example, as shown in Figure 7, two partition walls (WD), which are cylindrical or elliptical, are provided, and the inside of the housing 210 is divided into a first removal area (RR1), a connection area (RC), and a second removal area (RR2). ) can be divided into

A plurality of partition walls (WD) are housings such that exhaust gas flows from the bottom to the top in the first removal area (RR1) and the second removal area (RR2), and exhaust gas flows from the top to the bottom in the connection area (RC). (210) Can be provided inside.

In the gas-liquid reactor 200 of the above-described configuration, the exhaust gas discharged from the exhaust gas discharge device is first formed on the radial outermost side of the inside of the housing 210 and connected to the inlet 211, as shown in FIG. 7. 1 It may flow into the removal area (RR1) through the inlet 211. The exhaust gas flowing into the first removal area RR1 may flow through the first removal area RR1 and have its sulfur oxides removed by the first treatment liquid sprayed into the first removal area RR1. The exhaust gas from which sulfur oxides have been removed in this way may flow into the second removal area (RR2) inside the connection area (RC) through the connection area (RC) inside the first removal area (RR1). Carbon dioxide may be removed from the exhaust gas flowing into the second removal area (RR2) while flowing through the second removal area (RR2). The exhaust gas from which carbon dioxide has been removed may be discharged through the outlet 212 connected to the second removal region RR2.

As described above, when using the exhaust gas treatment device according to the present invention, the emission control gas can be separated from the waste treatment liquid that absorbs the emission control gas contained in the exhaust gas, and then the emission control gas can be stored and treated.

The exhaust gas treatment device described above is not limited to the configuration of the above-described embodiments, and the embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made. there is.

100: exhaust gas treatment device 200: gas-liquid reactor
210: housing 211: inlet
212: outlet 213: drain
213': 1st drain 213": 2nd drain
220: Treatment liquid injection unit 220': First treatment liquid injection unit
220": Second treatment liquid injection unit 221: Treatment liquid flow pipe
221': First treatment liquid flow pipe 221": Second treatment liquid flow pipe
222: Treatment liquid spray nozzle 222': First treatment liquid spray nozzle
222": Second treatment liquid spray nozzle 230: Packing
300: Treatment liquid supply tank 400: Gas-liquid separation treatment liquid Playback unit
400': First gas-liquid separation treatment liquid Regeneration unit 400": Second gas-liquid separation treatment liquid Playback unit
410: Separation unit body 410': First separation unit body
410": Second separation unit body 411: Liquid flow path
411': first liquid flow path 411": second liquid flow path
412: Gas flow path 412': First gas flow path
412": Second gas flow path 420: Gas-liquid separation membrane
420': first gas-liquid separation membrane 420": second gas-liquid separation membrane
500: Gas processing unit 510: Seawater flow pipe
520: fine bubble generator 521: fine hole
530: gas mixer 531: mixing member
540: Gas storage tank 600: Treatment agent supply tank
LD: Waste treatment liquid drain pipe LD': First waste treatment liquid drain pipe
LD": 2nd waste treatment liquid drain pipe LR: Treatment liquid recovery pipe
LR': 1st treatment liquid recovery pipe LR": 2nd treatment liquid recovery pipe
LG: Gas recovery pipe LG': Gas recovery pipe 1
LG": 2nd gas recovery pipe LA: Air inflow pipe
LA': 1st air inlet pipe LA": 2nd air inlet pipe
LP: Treatment liquid supply pipe LP': First treatment liquid supply pipe
LP": 2nd treatment liquid supply pipe LT: Treatment agent supply pipe
LT': First treatment agent supply pipe LT": Second treatment agent supply pipe
PV: Vacuum pump PB: Booster pump
PP: Treatment liquid supply pump PP': First treatment liquid supply pump
PP": Second treatment liquid supply pump VC: Flow control valve
VCP: Pressure control device WTS: Filtration treatment unit
HE: Heat exchanger RR1: First removal area
RR2: Second removal area RC: Connection area
WD: Partition wall SEA: Marine
SP: Water quality measurement sensor SS1: First storage area
SS2: Second storage area

Claims (4)

A gas-liquid reactor in which the exhaust gas and the treatment liquid come into contact so that the emission control gas contained in the exhaust gas is absorbed into the treatment liquid and removed;
a gas-liquid separation treatment liquid regeneration unit that separates the emission control gas from the waste treatment liquid, which is a treatment liquid that absorbs the emission regulation gas and is drained from the gas-liquid reactor, and regenerates the emission control gas into a treatment liquid; and
a gas processing unit that stores and processes the emission control gas separated from the gas-liquid separation treatment liquid regeneration unit; Includes,
The gas processing unit includes a gas storage tank connected to a gas recovery pipe connected to the gas-liquid separation treatment liquid regeneration unit and storing the emission control gas,
The gas recovery pipe is equipped with a vacuum pump,
An air inlet pipe communicating with the gas recovery pipe through the gas-liquid separation treatment liquid regeneration unit is connected to the gas-liquid separation treatment liquid regeneration unit,
By driving the vacuum pump, the air flowing in through the air inlet pipe and the emission control gas separated in the gas-liquid separation treatment liquid regeneration unit flow into the gas storage tank,
In the gas-liquid separation treatment liquid regeneration unit, a gas-liquid separation membrane through which the emission control gas passes but the waste treatment liquid does not pass through divides the liquid flow path through which the waste treatment liquid flows and the gas flow path through which the emission regulation gas flows, and the gas flow An exhaust gas treatment device that creates a low emission control gas partial pressure in the furnace, so that the emission control gas contained in the waste treatment liquid of the liquid flow passage passes through the gas-liquid separation membrane and moves to the gas flow passage. The exhaust gas treatment device according to claim 1, wherein the exhaust gas is cooled, compressed, and stored in a liquid state in the gas storage tank. A gas-liquid reactor in which the exhaust gas and the treatment liquid come into contact so that the emission control gas contained in the exhaust gas is absorbed into the treatment liquid and removed;
a gas-liquid separation treatment liquid regeneration unit that separates the emission control gas from the waste treatment liquid, which is a treatment liquid that absorbs the emission regulation gas and is drained from the gas-liquid reactor, and regenerates the emission control gas into a treatment liquid; and
a gas processing unit that stores and processes the emission control gas separated from the gas-liquid separation treatment liquid regeneration unit; Includes,
The gas processing unit includes a gas storage tank connected to a gas recovery pipe connected to the gas-liquid separation treatment liquid regeneration unit and storing the emission control gas,
An air inlet pipe communicating with the gas recovery pipe through the gas-liquid separation treatment liquid regeneration unit is connected to the gas-liquid separation treatment liquid regeneration unit,
In the gas-liquid separation treatment liquid regeneration unit, a gas-liquid separation membrane through which the emission control gas passes but the waste treatment liquid does not pass through divides the liquid flow path through which the waste treatment liquid flows and the gas flow path through which the emission regulation gas flows, and the gas flow An exhaust gas treatment device that creates a low emission control gas partial pressure in the furnace, so that the emission control gas contained in the waste treatment liquid of the liquid flow passage passes through the gas-liquid separation membrane and moves to the gas flow passage. The processing liquid supply tank according to claim 1, which supplies the treatment liquid to the gas-liquid reactor and stores the treatment liquid regenerated in the gas-liquid separation treatment liquid regeneration unit; An exhaust gas treatment device further comprising: