KR102385809B1 - Exhaust gas treatment apparatus - Google Patents

Abstract

Disclosed is an exhaust gas treatment device.
In the exhaust gas treatment apparatus according to an embodiment of the present invention, sulfur oxides contained in the exhaust gas are absorbed and removed by the first treatment liquid, and carbon dioxide contained in the exhaust gas from which the sulfur oxides are removed is absorbed and removed by the second treatment liquid. a gas-liquid reactor; a treatment liquid supply tank for supplying a second treatment liquid to the gas-liquid reactor; and gas-liquid for separating carbon dioxide from a second waste treatment liquid, which is a second treatment liquid that has absorbed carbon dioxide, drained from the gas-liquid reactor, and regenerates it as a second treatment liquid, and supplies the regenerated second treatment liquid to the treatment liquid supply tank Separation treatment liquid regeneration unit; In the gas-liquid reactor, a first removal region in which sulfur oxide is removed by contact with the exhaust gas and the first processing liquid, a second removal region in which carbon dioxide is removed by contact with the exhaust gas and the second processing liquid; A connection region connecting the first removal region and the second removal region may be provided.

Description

Exhaust gas treatment system {EXHAUST GAS TREATMENT APPARATUS}

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

As regulations on exhaust gas emitted from ships are increasingly being strengthened, there is a need to remove not only sulfur oxides but also carbon dioxide from exhaust gas emitted from ships.

In order to treat the exhaust gas, an exhaust gas treatment device is installed on the ship, and the exhaust gas treatment device can treat the exhaust gas by injecting a treatment liquid into the exhaust gas. In the exhaust gas treatment apparatus, seawater may be used as a treatment liquid. When seawater is used as a treatment liquid, sulfur oxides can be removed from the exhaust gas. However, since only a small amount of carbon dioxide can be removed, it was difficult to realize carbon dioxide reduction performance that could satisfy the Energy Efficiency Design Index of the International Maritime Organization under the UN. In addition, since a relatively large amount of seawater is required to treat the exhaust gas, a facility for supplying and spraying a large amount of seawater is required.

In addition, an alkaline aqueous solution such as an aqueous sodium hydroxide solution may be used as a treatment liquid in the exhaust gas treatment apparatus, and the exhaust gas may be treated with a small amount, but it is expensive. In order to reduce costs, the waste treatment liquid treated with the exhaust gas can be regenerated and reused in the exhaust gas treatment apparatus, but the regeneration rate of the waste treatment liquid is low in the conventional exhaust gas treatment apparatus. Accordingly, since the treatment agent must be continuously supplied to the regenerated treatment liquid, the cost is not significantly reduced. In addition, the facility used to regenerate the waste treatment liquid is a large facility that can be applied on some land, and it is difficult to apply the exhaust gas treatment device to a ship.

The present invention has been made in recognition of at least one of the needs or problems occurring in the prior art as described above.

One aspect of the object of the present invention is to allow the cost for treating exhaust gases in an exhaust gas treatment apparatus to be reduced.

Another aspect of the present invention is to increase the regeneration rate of the waste treatment liquid treated with the exhaust gas.

Another aspect of the object of the present invention is to allow the size of the exhaust gas treatment device to be reduced.

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

In an exhaust gas treatment apparatus according to an embodiment of the present invention, sulfur oxides contained in exhaust gas are absorbed and removed by a first treatment liquid, and carbon dioxide contained in the exhaust gas from which sulfur oxides are removed is absorbed and removed by a second treatment liquid. a gas-liquid reactor; a treatment liquid supply tank for supplying a second treatment liquid to the gas-liquid reactor; and gas-liquid for separating carbon dioxide from a second waste treatment liquid, which is a second treatment liquid that has absorbed carbon dioxide, drained from the gas-liquid reactor, and regenerates it as a second treatment liquid, and supplies the regenerated second treatment liquid to the treatment liquid supply tank Separation treatment liquid regeneration unit; In the gas-liquid reactor, a first removal region in which sulfur oxide is removed by contact with the exhaust gas and the first processing liquid, a second removal region in which carbon dioxide is removed by contact with the exhaust gas and the second processing liquid; A connection region connecting the first removal region and the second removal region may be provided.

In this case, the gas-liquid reactor may include a housing whose interior is partitioned into the first removal region, the second removal region, and the connection region by a plurality of partition walls.

In addition, a plurality of partition walls may be provided inside the housing so that the exhaust gas flows from the bottom to the top in the first removal region and the second removal region and the exhaust gas flows from the top to the bottom in the connection region. there is.

In addition, the housing has an exhaust gas exhaust device and an inlet connected to the first removal region, an outlet connected to the second removal region, a first drain port connected to the first removal region, and connected to the second removal region. A second drain port may be provided.

In addition, the gas-liquid reactor includes a first treatment liquid spraying unit that sprays a first treatment liquid to the exhaust gas flowing through the first removal area, and a second treatment liquid spraying the exhaust gas flowing through the second removal area. It may further include a second treatment liquid spraying unit.

And, the first treatment liquid may be seawater.

In addition, a first treatment liquid supply pipe connected to the ocean may be connected to the first treatment liquid spray unit, and a first waste treatment liquid drain pipe connected to the ocean may be connected to the first removal area.

In addition, the first treatment liquid spraying unit may be plural.

Also, a second treatment liquid supply pipe connected to the treatment liquid supply tank may be connected to the second treatment liquid spray unit.

And, in the gas-liquid separation treatment liquid regeneration unit, a gas-liquid separation membrane through which carbon dioxide passes but not through the second waste treatment liquid partitions a liquid flow path through which the second waste treatment liquid flows and a gas flow path through which carbon dioxide flows, and A low partial pressure of carbon dioxide may be formed in the gas flow path, so that carbon dioxide contained in the second waste treatment liquid of the liquid flow path may pass through the gas-liquid separation membrane to move to the gas flow path.

In addition, a second waste treatment liquid drain pipe connected to the gas-liquid reactor may be connected to one side of the liquid flow path, and the other end of the liquid flow path may be connected to the treatment solution supply tank by a treatment solution recovery pipe.

In addition, a gas return pipe having a vacuum pump is connected to one side of the gas flow path so that a low partial pressure of carbon dioxide is formed in the gas flow path.

In addition, an air inlet pipe having a flow rate control valve is connected to the other side of the gas flow path to adjust the partial pressure of carbon dioxide formed in the gas flow path.

In addition, the gas-liquid separation membrane may be a hollow fiber membrane in which the gas flow path or the liquid flow path is formed.

In addition, the second treatment liquid may be an alkaline aqueous solution.

As described above, according to the embodiment of the present invention, the second waste treatment liquid may be regenerated by the gas-liquid separation treatment liquid regeneration unit that separates carbon dioxide from the second waste treatment liquid from which carbon dioxide is removed from the exhaust gas.

In addition, according to an embodiment of the present invention, the regeneration rate of the second waste treatment liquid from which carbon dioxide is removed from the exhaust gas may be increased.

And also, according to the embodiment of the present invention, the cost for treating the exhaust gas in the exhaust gas processing apparatus can be reduced.

And also, according to the embodiment of the present invention, the size of the exhaust gas treatment apparatus can be reduced.

1 is a view showing a first embodiment of an exhaust gas treatment apparatus according to the present invention.
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 apparatus according to the present invention.
Fig. 3 is a view showing one embodiment of the gas processing unit of the first embodiment of the exhaust gas processing apparatus according to the present invention.
4 is a view showing another embodiment of the gas processing unit of the first embodiment of the exhaust gas processing apparatus according to the present invention.
5 is a view showing a second embodiment of the exhaust gas treatment apparatus according to the present invention.
6 is a view showing a third embodiment of the exhaust gas treatment apparatus according to the present invention.
7 is a view showing a fourth embodiment of the exhaust gas treatment apparatus according to the present invention.

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

The embodiments described below will be described based on the most suitable embodiments for understanding the technical features of the present invention, and the technical features of the present invention are not limited by the described embodiments, but Examples are to illustrate that the present invention can be implemented. Accordingly, the present invention is capable of various modifications within the technical scope of the present invention through the embodiments described below, and these modified embodiments will fall within the technical scope of the present invention. In addition, in the reference numerals in the accompanying drawings to help the understanding of the embodiments to be described below, related elements among the elements that perform the same operation in each embodiment are indicated by the same or extended numbers.

1st embodiment of exhaust gas treatment apparatus

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

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

3 is a view showing one embodiment of the gas processing unit of the first embodiment of the exhaust gas processing apparatus according to the present invention, and FIG. 4 is a view showing the gas processing unit of the first embodiment of the exhaust gas processing apparatus according to the present invention. It is a diagram showing another embodiment.

The first embodiment of the exhaust gas treatment apparatus 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 .

In the gas-liquid reactor 200 , exhaust gas discharged from an exhaust gas exhaust device (not shown) such as an engine or a boiler may flow thereinto. In addition, in the gas-liquid reactor 200 , the exhaust gas and the treatment liquid are brought into contact so that the emission control gas included in the exhaust gas is absorbed and removed by the treatment liquid. The emission control gas may be, for example, sulfur oxide or carbon dioxide. However, the emission control gas may be any emission control gas as long as the emission to the atmosphere, such as nitrogen oxide, is regulated. The gas-liquid reactor 200 may include a housing 210 and a treatment liquid injection unit 220 .

The housing 210 may be connected to the exhaust gas exhaust device. The housing 210 may include an inlet 211 , an outlet 212 , and a drain 213 . As shown in FIG. 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 port 213 is located on the lower surface of the housing 210 . can be provided. However, the portion of the housing 210 provided with the inlet 211 , the outlet 212 , or the drain 213 is not particularly limited.

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

As shown in FIG. 1 , the treatment liquid may be sprayed into the housing 210 by the treatment liquid spraying unit 220 . Accordingly, the exhaust gas flowing into and flowing into the housing 210 may come into contact with the treatment liquid. As such, when the exhaust gas comes into contact with the treatment liquid, the emission control gas included in the exhaust gas, for example, sulfur oxide or carbon dioxide may 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 exhaust port 212 . In addition, the waste treatment liquid, which is the treatment liquid that has absorbed the emission control gas, may be drained through the drain port 213 .

A packing 230 may be provided inside the housing 210 . The contact area and contact time between the exhaust gas and the treatment liquid may be increased by the packing 230 . Accordingly, the treatment efficiency of the exhaust gas by the treatment liquid can be improved. The packing 230 may include a plurality of members having a plurality of holes formed therein. In the housing 210 , in addition to the packing 230 , a configuration in which the contact area and contact time between the exhaust gas and the treatment liquid can be increased, such as the packing 230 , may be provided.

The housing 210 may have a rectangular cross-section. The housing 210 may be installed, for example, inside a stack (not shown) of a ship (not shown). The stack of ships may have a rectangular cross-section. And, if the cross-section of the housing 210 is rectangular as described above, when the housing 210 is installed on the stack of a ship having a rectangular cross-section, the dead area, which is an unused space, can be minimized. When the housing 210 is installed on the stack of a ship, the stack may be expanded, for example, in the bow or stern direction of the ship. When the cross-sectional shape of the housing 210 is rectangular, the dead area can be minimized when installed on the stack of a ship having a rectangular cross-section as described above, so the expansion area of the stack for installation of the housing 210 can be minimized. there is. Accordingly, the installation of the housing 210 of the stack of the ship can be made easily, time and materials for installation of the housing 210 on the stack can be saved, and the space utilization of the ship can be improved. .

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

The treatment liquid flow pipe 221 may be connected to the treatment liquid supply tank 300 . The treatment liquid flow pipe 221 may be connected to the treatment liquid supply tank 300 by a treatment liquid supply pipe LP as shown in FIG. 1 . The treatment liquid supply pipe LP may be provided with a treatment liquid supply pump PP. In addition, when the treatment liquid supply pump PP is driven, the treatment liquid stored in the treatment liquid supply tank 300 may flow through the treatment liquid flow pipe 221 .

The treatment liquid flow pipe 221 may pass through one surface of the housing 210 and be provided inside the housing 210 . In addition, the treatment liquid injection nozzle 222 may be provided in a portion of the treatment liquid flow pipe 221 provided in the housing 210 . Accordingly, the treatment liquid flowing through the treatment liquid flow pipe 221 may be injected into the exhaust gas flowing through the housing 210 as shown in FIG. 1 through the treatment liquid injection nozzle 222 .

The treatment liquid supply tank 300 may supply the treatment liquid to the gas-liquid reactor 200 . A treatment liquid may be stored in the treatment 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, is injected into the exhaust gas and comes into contact with the exhaust gas to absorb the emission control gas contained in the exhaust gas, and the gas-liquid separation treatment liquid regeneration unit 400 ), as long as the emission control gas can be separated and regenerated, any known type is possible.

As shown in FIG. 1 , one side of the treatment liquid supply pipe LP may be connected to the treatment liquid supply tank 300 . The other side of the treatment liquid supply pipe LP may be connected to the treatment liquid flow pipe 221 of the treatment liquid spray unit 220 . In addition, when the treatment liquid supply pump PP of the treatment liquid supply pipe LP is driven, the treatment liquid in the treatment liquid supply tank 300 may be supplied to the treatment liquid injection unit 220 through the treatment 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 . In addition, the treatment liquid regenerated in the gas-liquid separation treatment liquid regeneration unit 400 may be supplied to and stored in the treatment liquid supply tank 300 through the treatment liquid recovery pipe LR 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 by the treatment agent supply pipe LT. Accordingly, the treatment agent stored in the treatment agent supply tank 600 , for example, an alkali agent such as sodium hydroxide, may be supplied to the regenerated treatment liquid flowing through the treatment liquid recovery pipe LR through the treatment agent supply pipe LT. In addition, the treatment agent supply pipe LT is connected to the treatment liquid supply tank 300 instead of the treatment liquid recovery pipe LR as shown in FIG. 5 , and supplies the treatment liquid stored in the treatment liquid supply tank 300 to the treatment agent supply tank. The treatment agent stored in 600 may be supplied.

As shown in FIG. 1 , a heat exchanger HE may be connected to the treatment liquid supply tank 300 . The heat exchanger HE exchanges heat with the treatment liquid stored in the treatment liquid supply tank 300 to cool the treatment liquid to a temperature at which the emission control gas included in the exhaust gas can be relatively well absorbed. The treatment liquid absorbs the emission control gas contained in the exhaust gas in the gas-liquid reactor 200 to become a waste treatment liquid, and the temperature may be increased by the hot exhaust gas. As described above, 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 before being sprayed into the gas-liquid reactor 200 . The temperature may be higher than that of the treatment liquid. When the treatment liquid having the elevated temperature is supplied to the treatment liquid supply tank 300 as described above, the temperature of the treatment liquid stored in the treatment liquid supply tank 300 may increase, so that the absorption rate of the emission control gas of the treatment liquid may decrease. However, as described above, when the temperature of the treatment liquid stored in the treatment liquid supply tank 300 is cooled to a temperature at which the emission control gas included in the exhaust gas can be relatively well absorbed by the heat exchanger HE, the treatment 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 that is the treatment liquid that has absorbed the emission control gas drained from the gas-liquid reactor 200 , and regenerates it as a treatment liquid, and processes the regenerated treatment liquid It can be supplied to the liquid supply tank (300). In this way, since the treatment liquid can be regenerated and reused, the cost for treating the exhaust gas can be reduced.

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 a gas-liquid separation treatment liquid regeneration unit 400. can be connected to Accordingly, the waste treatment liquid drained through the drain port 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, a booster pump PB may be provided in the waste treatment liquid drain pipe LD as shown in FIG. 4 .

As shown in FIG. 1 , the waste treatment liquid drain pipe LD may be provided with a filtration treatment unit WTS that filters and treats pollutants other than the emission control gas included in the waste treatment liquid. Pollutants other than emission control gas included in the waste treatment liquid include, for example, particulate matter and oil. The filtration unit WTS may filter pollutants other than the emission control gas included 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, particulate matter, oil, etc. contained in the waste treatment liquid is filtered by the filtration unit (WTS), and contaminants included in the treatment liquid regenerated in the gas-liquid separation treatment liquid regeneration unit 400 are minimized. By doing so, it is possible to protect the performance of the gas-liquid separation membrane 420 included in the gas-liquid separation treatment liquid regeneration unit 400 . The filtration unit WTS may filter particulate matter, oil, etc. from the 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.

1 , one side of the treatment liquid recovery pipe LR is connected to the gas-liquid separation treatment liquid regeneration unit 400 , and the other end 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 may be supplied to the treatment liquid supply tank 300 through the treatment liquid recovery pipe LR to be reused as the treatment liquid.

The gas-liquid separation treatment liquid regeneration unit 400 includes a gas-liquid separation membrane 420 through which gas passes but not liquid. A flowing gas flow path 412 may be partitioned. In the gas-liquid separation membrane 420 of the present invention, the emission control gas passes, 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 to have a low partial pressure of the emission control gas It can move to the formed gas flow path 412 to separate the emission control gas and the treatment liquid. The low partial pressure of the emission control gas means a state in which the concentration of the emission control gas is low. When carbon dioxide among the emission control gas is described as an example, the carbon dioxide concentration 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 path 411 and passes through the gas-liquid separation membrane 420 to form a low partial pressure of the emission control gas. It moves to the furnace 412 . A negative pressure can be applied to create a low partial pressure of the exhaust gas, or the exhaust gas can be diluted with sweeping air. As such, 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 in which a low partial pressure of the emission control gas is formed, and the waste treatment liquid The emission control gas can be easily separated from the

By using a gas-liquid separation membrane 420 that passes gas but not liquid, and 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 the emission control gas. In the case of using such a method, since the amount of the treatment agent to be supplied to the regenerated treatment liquid can be reduced, the cost required to regenerate the waste treatment liquid can be reduced. Accordingly, the cost required for treating the exhaust gas can be reduced. And, since the size of the gas-liquid separation treatment liquid regeneration unit 400 can be made relatively small, the size of the exhaust gas treatment device 100 can be reduced, for example, where there is a limitation in installation space such as a ship, exhaust gas treatment The device 100 can be easily installed.

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

1, the waste treatment liquid drain pipe LD connected to the drain port 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 may be connected to the treatment liquid supply tank 300 by the liquid recovery pipe LR. Accordingly, the waste treatment liquid drained through the drain port 213 of the gas-liquid reactor 200 may flow into the liquid flow path 411 and flow through the liquid flow path 411 . Then, while flowing through the liquid flow path 411 , the treatment liquid regenerated by the separation of the emission control gas flows into the treatment liquid recovery pipe LR and flows to the treatment liquid supply tank 300 through the treatment liquid recovery pipe LR. can do.

As shown in FIG. 1 on one side of the gas flow path 412, a gas return pipe LG provided with a vacuum pump PV may be connected. Accordingly, when the vacuum pump PV is driven, a low partial pressure of the emission control gas may be formed in the gas flow path 412 . In addition, an air inlet pipe LA having a flow rate control valve VC may be connected to the other side of the gas flow path 412 . Thereby, in a state in which the vacuum pump PV is driven, the flow rate control valve VC is operated to adjust the flow rate of air flowing into the air inlet pipe LA, thereby forming the low flow rate formed in the gas flow path 412 . It is possible to adjust the partial pressure of the emission control gas.

The gas-liquid separation membrane 420 may be a hollow fiber membrane in which a gas flow path 412 is formed as shown in FIG. 1 . Accordingly, the internal space of the separation unit body 410 other than the gas-liquid separation membrane 420 may become the liquid flow path 411 . In addition, the gas-liquid separation membrane 420 may be a hollow fiber membrane in which a liquid flow path 411 is formed, as shown in FIG. 2 . In this case, the internal space of the separation unit body 410 other than the gas-liquid separation membrane 420 may be the gas flow path 412 . However, the gas-liquid separation membrane 420 is not particularly limited, and the emission control gas passes but the waste treatment liquid does not, and the liquid flow path 411 through which the waste treatment liquid flows through the separation unit body 410 and the discharge control liquid. As long as it can be partitioned by the gas flow path 412 through which gas flows, any known type such as a flat membrane may be used.

When high sulfur fuel is used in the exhaust gas exhaust device, the exhaust gas discharged from the exhaust gas exhaust device contains a relatively large amount of sulfur oxides. As such, when the exhaust gas containing a large amount of sulfur oxide 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 is sulfur oxides contained in the exhaust gas. is mainly removed from the exhaust gas. That is, in the gas-liquid reactor 200 , the desulfurization of the exhaust gas is performed by the treatment liquid. As described above, 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 , the emission control gas, which is sulfur oxides such as sulfur dioxide, is separated from the waste treatment liquid.

When the low-sulfur fuel is used in the exhaust gas exhaust device, the exhaust gas discharged from the exhaust gas exhaust device contains relatively little sulfur oxide. As such, when the exhaust gas containing less sulfur oxide 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 releases carbon dioxide contained in the exhaust gas. It is mainly removed from exhaust gases. As described above, the waste treatment liquid from which carbon dioxide is removed from the exhaust gas includes carbon dioxide, and the gas-liquid separation treatment liquid regeneration unit 400 separates carbon dioxide from the waste treatment liquid.

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

In the gas treatment unit 500, the emission control gas may be dissolved in seawater in an eco-friendly ionic state for treatment. For example, in the gas treatment unit 500, carbon dioxide, which is an emission control gas, may be dissolved in seawater with an eco-friendly ionizing material in a natural state such as carbonic acid, bicarbonate, carbonate, etc. It can be treated by dissolving it in seawater as an eco-friendly ionizing material of

To this end, the gas treatment unit 500 may include a seawater flow pipe 510 to which seawater flows and a gas return pipe LG connected to the gas-liquid separation treatment liquid regeneration unit 400 is connected as shown in FIG. 3 . there is. Such a seawater flow pipe 510 may be, for example, a cooling water pipe, a ballast water pipe, a sea chest, etc. provided in a ship. However, the seawater flow pipe 510 is not particularly limited, and as long as the seawater flows, any known type is possible.

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

As described above, when the seawater flow pipe 510 is branched into a plurality of pieces, the flow rate of seawater is reduced, so that sufficient time for the emission control gas to be dissolved in seawater in an environment-friendly ionic state can be secured. Dissolution in seawater into an environmentally friendly ionic state can be better achieved. In addition, as shown in Figure 3, the seawater flow pipe 510 may be provided with a pressure control device (VCP). Accordingly, by increasing the pressure of the seawater flowing through the seawater flow pipe 510, the emission control gas can be easily dissolved in the seawater in an environmentally friendly ionic state.

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 return pipe LG as shown in FIG. 3 . In the microbubble generator 520 , the emission control gas may be mixed with the seawater flowing through the seawater flow pipe 510 as fine bubbles. For example, in the microbubble generator 520, a plurality of microholes 521 are formed, and the emission control gas flowing through the gas return pipe LG passes through the micropores 521 to flow the seawater flow pipe 510 as microbubbles. 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 microbubbles, the emission control gas can be better dissolved in the seawater into an eco-friendly ionic state.

The gas processing unit 500 may further include a gas mixer 530 . The gas mixer 530 may be provided in a portion of the seawater flow pipe 510 next to the microbubble generator 520 in the flow direction of the seawater as shown in FIG. 3 . And it is possible to mix the emission control gas bubbles and seawater, which are generated in the microbubble generator 520 and supplied to the seawater flowing through the seawater flow pipe 510 . For example, the gas mixer 530 is provided so that the screw-shaped mixing member 531 rotates, so that the seawater and the emission control gas bubbles supplied to the seawater of the seawater flow pipe 510 are mixed. Accordingly, dissolution of the emission control gas into seawater into an environmentally friendly ionic state can be better achieved.

As described above, the branched seawater flow pipe 510 may be re-collected as shown in FIG. 3 and then connected to the ocean (SEA). Accordingly, seawater in which the emission control gas is dissolved in an environment-friendly ionic state can be drained to the sea (SEA). As shown in FIG. 3 , a water quality measuring sensor SP may be provided at a portion of the seawater flow pipe 510 that discharges the seawater dissolved in the emission control gas into the environment-friendly ionic state to the sea SEA.

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

Meanwhile, the gas treatment unit 500 may 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), there is also a requirement for a zero discharge condition in which no substances are discharged from ships, etc. Accordingly, in the case of a vessel operating in such an area, the gas treatment unit 500 may 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 treatment unit 500 may be supplied to a place of use.

As shown in FIG. 4 , the gas processing unit 500 may include a gas storage tank 540 to which the gas return pipe LG is connected and the emission control gas is stored.

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 return pipe LG. The gas storage tank 540 liquefies the emission control gas by cooling and compressing it, so that the emission control gas can be stored in a liquid state. In this way, the emission control gas stored in the liquid state in the gas storage tank 540 may be supplied to a place of use.

Second embodiment of exhaust gas treatment device

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

5 is a view showing a second embodiment of the exhaust gas treatment apparatus according to the present invention.

Here, the second embodiment of the exhaust gas processing apparatus according to the present invention is the first embodiment of the exhaust gas processing apparatus according to the present invention described with reference to FIGS. 1 to 4, and the exhaust gas from the gas-liquid reactor 200 There is a difference in that the sulfur oxide contained in the gas is absorbed and removed by the first treatment liquid, and carbon dioxide contained in the exhaust gas from which the sulfur oxide is removed is absorbed and removed by the second treatment liquid. And, for this purpose, the first removal region RR1 in which the sulfur oxide is removed by contacting the exhaust gas with the first treatment liquid in the gas-liquid reactor 200 and the second removal region RR1 in which the exhaust gas and the second treatment liquid are in contact with each other to remove carbon dioxide There is a difference in that the removal region RR2 and the connection region RC connecting the first removal region RR1 and the second removal region RR2 are provided.

Therefore, in the following, the differentiated parts will be mainly described, and the remaining components may be replaced with those described with reference to FIGS. 1 to 4 .

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

When a treatment liquid, for example, an alkaline aqueous solution, is injected into the exhaust gas containing both sulfur oxides and carbon dioxide, sulfur oxides may be removed from the exhaust gas first. Therefore, in order to remove carbon dioxide from the 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 sulfur oxides have been removed, sulfur oxides and All carbon dioxide can be removed. Also, even when the exhaust gas contains a small amount of sulfur oxides, since the sulfur oxides can be removed first, the carbon dioxide removal rate can be further improved.

In the gas-liquid reactor 200 , a first removal region RR1 in which sulfur oxide is removed by contact with the exhaust gas and the first processing liquid, and a second removal region RR2 in which carbon dioxide is removed by contact with the exhaust gas and the second processing liquid ) and a connection region RC connecting the first removal region RR1 and the second removal region RR2 may be provided.

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

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

For example, as shown in FIG. 5 , two partition walls WD are provided inside the housing 210 , respectively, to provide a first removal region RR1 and a second removal region RR2 and It can be divided into a connection region (RC). That is, one partition wall WD partitions a part of the connection area RC while partitioning the inside of the housing 210 into the first removal area RR1, and the other partition wall WD covers the inside of the housing 210 . The remainder of the connection region RC may be partitioned while partitioning into two removal regions RR2.

In addition, as shown in FIG. 5 , the upper end of the partition wall WD dividing the first removal region RR1 and a part of the connection region RC is spaced apart from the upper end of the housing 210 by a predetermined distance inside the housing 210 . can be provided in In addition, the lower end of the partition wall WD dividing the rest of the connection area RC and the second removal area RR2 may be provided inside the housing 210 to be spaced apart from the lower end of the housing 210 by a predetermined distance.

In addition, the inlet 211 connected to the exhaust gas exhaust device may be connected to the first removal region RR1 , and the outlet 212 may be connected to the second removal region RR2 . In addition, the housing 210 is provided with a first drain hole 213 ′ and a second drain hole 213 ″, respectively, and the first drain hole 213 ′ is connected to the first removal region RR1 and a second drain hole 213 . ") may be connected to the second removal region RR2.

Accordingly, in both the first removal region RR1 and the second removal region RR2, sulfur oxide or carbon dioxide can be removed while exhaust gas flows from the bottom to the top, and in the connection region RC, the first removal region The exhaust gas from which the sulfur oxides are removed in RR1 may flow from the top to the bottom to flow into the second removal region RR2.

In addition, the gas-liquid separation treatment liquid regeneration unit 400 includes a pretreatment configuration and a treatment liquid recovery configuration connected to the gas-liquid separation treatment liquid regeneration unit 400 for regenerating 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 apparatus 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 spraying unit 220 ′ may spray the first treatment liquid into the exhaust gas flowing through the first removal region RR1 of the housing 210 . As shown in FIG. 5 , the first treatment liquid spray unit 220 ′ may include a first treatment liquid flow pipe 221 ′ and a first treatment liquid spray nozzle 222 ′.

The first treatment liquid flow pipe 221 ′ may pass through one surface of the housing 210 and be provided in the first removal region RR1 . In addition, 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 region RR1 .

There may be a plurality of first treatment liquid spraying units 220 ′. In this case, the plurality of first treatment liquid spraying units 220 ′ may be disposed vertically with a predetermined interval therebetween. In addition, in the lowermost first treatment liquid injection unit 220 ′, a pretreatment of removing some sulfur oxides from the exhaust gas may be performed while cooling the temperature of the exhaust gas by the first treatment liquid to facilitate removal of sulfur oxides and carbon dioxide. . In addition, the remaining first treatment liquid injection unit 220 ′ may perform post-treatment to remove the remaining sulfur oxides from the exhaust gas. For example, there may be two first treatment liquid spraying units 220 ′ as shown in FIG. 5 . However, the number of the first treatment liquid spraying 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 ocean SEA may be connected to the first treatment liquid flow pipe 221 ′ of the first treatment liquid spray unit 220 ′. . A first treatment liquid supply pump PP' may be provided in the first treatment liquid supply pipe LP'. In addition, a first waste treatment liquid drain pipe LD' connected to the ocean SEA may be connected to the first drain port 213 ′ connected to the first removal region 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 spray unit 220 ′ for the first treatment. It may be injected into the exhaust gas flowing in the first removal region RR1 of the housing 210 through the liquid injection nozzle 222 ′. And, the first waste treatment liquid, which is seawater that is sprayed into the first removal region RR1 of the housing 210 and has absorbed sulfur oxides from the exhaust gas, is discharged to the sea SEA through the first waste treatment liquid drain pipe LD′. can be drained. A water treatment unit (not shown) is provided in the first waste treatment liquid drain pipe LD', so that the first waste treatment liquid, which is seawater that has absorbed sulfur oxides from the exhaust gas, is water-treated and then drained to the sea (SEA). there is.

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

The second treatment liquid flow pipe 221 ″ may be provided in the second removal region RR2 through the other surface of the housing 210 . And, the second treatment liquid spray nozzle 222 ″ is disposed in the second removal region ( It may be provided in a portion of the second treatment liquid flow pipe 221 ″ provided in RR2).

In the treatment liquid supply tank 300 of the second embodiment of the exhaust gas treatment apparatus 100 according to the present invention, the second treatment liquid may be supplied 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 ″. 2 It may be connected to the treatment liquid flow pipe 221 ″.

A second processing liquid supply pump PP" may be provided in the second processing liquid supply pipe LP". And, when the second treatment liquid supply pump PP " is driven, the second treatment liquid stored in the treatment liquid supply tank 300 is transferred to the second treatment liquid flow pipe 221 ″ of the second treatment liquid spray unit 220 ″. may 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 solution 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 apparatus 100 according to the present invention The regeneration unit 400 separates carbon dioxide from the second waste treatment liquid, which is the second treatment liquid that has absorbed carbon dioxide, drained from the gas-liquid reactor 200 , and regenerates it as a second treatment liquid, and converts the regenerated second treatment liquid into a treatment liquid. It can be supplied to the supply tank (300).

For this, the gas-liquid separation treatment liquid The gas-liquid separation membrane 420 of the regeneration unit 400 may pass carbon dioxide but may not allow the second waste treatment liquid to pass therethrough. And, the second waste treatment liquid drain pipe (LD") connected to the gas-liquid reactor 200 is a 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 FIG. 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") is gas-liquid separation treatment liquid It may be connected to one side of the liquid flow path 411 of the regeneration unit 400 . In addition, the other side of the liquid flow path 411 may be connected to the treatment liquid supply tank 300 by the treatment liquid recovery pipe LR.

Accordingly, the second waste treatment liquid drained through the second drain port 213 " of the gas-liquid reactor 200 is the 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 regenerated as the second treatment liquid. The regenerated second treatment liquid may be supplied to the treatment liquid supply tank 300 through the treatment liquid recovery pipe LR.

And, the 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 through a gas return pipe (LG) connected to the gas flow path 412 It may be processed by flowing to the gas processing unit 500 .

Third embodiment of exhaust gas treatment device

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

6 is a view showing a third embodiment of the exhaust gas treatment apparatus according to the present invention.

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

Therefore, in the following, the differentiated parts will be mainly described, and the remaining components may be replaced with those described with reference to FIGS. 1 to 5 .

The treatment liquid supply tank 300 of the third embodiment of the exhaust gas treatment apparatus 100 according to the present invention may 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. may be partitioned by a partition wall WD.

And, the first storage area SS1 is connected to the first treatment liquid injection unit 220' of the gas-liquid reactor 200 by the first treatment liquid supply pipe LP', and the second storage area SS2 is the second storage area SS2. It may be connected to the second treatment liquid injection unit 220 ″ of the gas-liquid reactor 200 by the second treatment liquid supply pipe LP″.

Accordingly, when the first processing liquid supply pump PP' provided in the first processing liquid supply pipe LP' is driven, the first processing liquid in the first storage area SS1 is transferred to the first processing liquid supply pipe LP'. ) may be supplied to the first treatment liquid spraying 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 processing liquid supply pump PP" provided in the second processing liquid supply pipe LP" is driven, the second processing liquid in the second storage area SS2 is transferred to the second processing liquid supply pipe LP". It may be supplied to the second treatment liquid spraying unit 220 ″ through the . 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 spraying units 220 ′, and a packing 230 may be provided in a portion of the first removal region RR1 between the plurality of first treatment liquid spraying units 220 ′. For example, as shown in FIG. 6 , the two first treatment liquid spraying units 220' are disposed at a predetermined distance vertically, and the first removal area (220') between the two first treatment liquid spraying units 220' A packing 230 may be provided in a portion of RR1).

1st gas-liquid separation treatment liquid In the regeneration unit 400', the sulfur oxide is separated from the first waste treatment liquid, which is the first treatment liquid that has absorbed the sulfur oxides drained from the gas-liquid reactor 200, and regenerated as the first treatment liquid, and the regenerated first treatment liquid may be supplied to the treatment liquid supply tank 300 .

To this end, the first gas-liquid separation treatment liquid In the regeneration unit 400', the first gas-liquid separation membrane 420' through which the sulfur oxide passes but the first waste treatment liquid does not pass through the first liquid flow path 411' through which the first waste treatment liquid flows and the sulfur oxide The flowing first gas flow path 412 ′ may be partitioned. Then, 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 converted into the first gas-liquid separation membrane 420 ′. It may be made to move to the first gas flow path 412 ′ through the .

1st gas-liquid separation treatment liquid The regeneration unit 400' has a first separation unit body 410' in which an inner 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 be further included. In addition, the first waste treatment liquid drain pipe LD' connected to the first drain port 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 by the first treatment liquid recovery pipe LR'. In addition, a first gas return pipe (LG') equipped with a vacuum pump (PV) is connected to one side of the first gas flow path 412', so that a low sulfur oxide partial pressure is formed in the first gas flow path 412'. can make it happen In addition, the first air inlet pipe LA ′ provided with a flow control valve VC is connected to the other side of the first gas flow path 412 ′ to form a partial pressure of sulfur oxide formed in the first gas flow path 412 ′. can be adjusted. In addition, the first gas-liquid separation membrane 420 ′ may be a hollow fiber membrane in which the first gas flow path 412 ′ or the first liquid flow path 411 ′ is formed.

2nd 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 has absorbed carbon dioxide, drained from the gas-liquid reactor 200, and regenerates it as a second treatment liquid, and processes the regenerated second treatment liquid. It can be supplied to the liquid supply tank (300).

For this, the second gas-liquid separation treatment liquid In the regeneration unit 400", the second gas-liquid separation membrane 420" through which carbon dioxide passes but not the second waste treatment liquid flows through the second liquid flow path 411" through which the second waste treatment liquid flows and carbon dioxide flows. A second gas flow path 412 ″ may be partitioned. Then, a low partial pressure of carbon dioxide 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". to move to the second gas flow path 412 ″.

2nd gas-liquid separation treatment liquid The regeneration unit 400" has a second separation unit body 410" in which an inner 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 be further included. 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", and , the other side of the second liquid flow path 411 ″ may be connected to the second storage region SS2 of the treatment solution supply tank 300 by a second treatment solution recovery pipe LR″. Then, a second gas return pipe (LG") equipped with a vacuum pump (PV) is connected to one side of the second gas flow path 412" so that a low partial pressure of carbon dioxide is formed in the second gas flow path 412". In addition, the second air inlet pipe (LA") provided with the flow rate control valve VC is connected to the other side of the second gas flow path 412" and is formed in the second gas flow path 412". It is possible to control the low partial pressure of carbon dioxide. In addition, the second gas-liquid separation membrane 420 ″ may be a hollow fiber membrane in which the second gas flow path 412 ″ or the second liquid flow path 411 ″ is formed.

The first treatment liquid and the second treatment liquid may be alkaline aqueous solutions such as sodium hydroxide aqueous solution. In this case, an alkali 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 ( 300 , respectively, connected to the first storage region SS1 and the second storage region SS2 , and an alkali agent may be supplied as a treatment agent, respectively.

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

In addition, each of the first gas return pipe LG′ and the second gas return pipe LG″ may be connected to the gas processing unit 500 .

The fourth embodiment of the exhaust gas treatment device

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

7 is a view showing a fourth embodiment of the exhaust gas treatment apparatus according to the present invention.

Here, the fourth embodiment of the exhaust gas processing apparatus according to the present invention is a gas-liquid reactor ( There is a difference in that the cross section of the housing 210 of the 200 is circular or oval.

Therefore, in the following, the differences will be mainly described, and the remaining configurations may be replaced with those described with reference to FIGS. 1 to 6 .

In the fourth embodiment of the exhaust gas treatment apparatus 100 according to the present invention, the cross section of the housing 210 of the gas-liquid reactor 200 may be circular or oval. Accordingly, the housing 210 may be a cylinder or an elliptical cylinder as shown in FIG. The first removal region RR1 is located radially outward from the inside of the housing 210 , the connection region RC is located inside the first removal region RR1 , and the second removal region RR2 is It may be located inside the connection region RC. To this end, the cross-sections of the first removal region RR1 and the connection region RC may be annular, and the cross-sections of the second removal region RR2 may be circular or oval. Accordingly, the flow of the exhaust gas can be made smoothly, so that the exhaust gas may not flow with a bias to one side, so that the treatment of the exhaust gas can be made more smoothly.

A plurality of partition walls WD, which are cylindrical or oval-cylindrical, are provided inside the housing 210 to partition the inside of the housing 210 into a first removal region RR1, a connection region RC, and a second removal region RR2. can For example, as shown in FIG. 7 , two partition walls WD, which are cylindrical or oval, are provided to provide the inside of the housing 210 with a first removal area RR1, a connection area RC, and a second removal area RR2. ) can be delimited.

The plurality of partition walls WD have a housing such that exhaust gas flows from the bottom to the top in the first removal region RR1 and the second removal region RR2 and the exhaust gas flows from the top to the bottom in the connection region RC. 210 may be provided inside.

In the gas-liquid reactor 200 having the above configuration, the exhaust gas discharged from the exhaust gas exhaust device is first formed at the outermost radially inside the housing 210 and connected to the inlet 211 as shown in FIG. 7 . 1 may be introduced into the removal region RR1 through the inlet 211 . Sulfur oxides may be removed from the exhaust gas flowing into the first removal region RR1 by the first treatment liquid injected into the first removal region RR1 while flowing through the first removal region RR1. As described above, the exhaust gas from which the sulfur oxide is removed may be introduced into the second removal region RR2 inside the connection region RC through the connection region RC inside the first removal region RR1 . Carbon dioxide may be removed from the exhaust gas flowing into the second removal region RR2 while flowing through the second removal region 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 the exhaust gas treatment apparatus according to the present invention is used, the second waste treatment liquid can be regenerated by a gas-liquid separation treatment liquid regeneration unit that separates carbon dioxide from the second waste treatment liquid from which carbon dioxide is removed from the exhaust gas, The regeneration rate of the second waste treatment liquid from which carbon dioxide is removed from the exhaust gas may be increased, the cost for treating the exhaust gas in the exhaust gas treatment apparatus may be reduced, and the size of the exhaust gas treatment apparatus may be reduced.

In the exhaust gas treatment apparatus described above, the configuration of the above-described embodiment is not limitedly applicable, 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 processing liquid flow pipe 221": second processing liquid flow pipe
222: treatment liquid injection nozzle 222': first treatment liquid injection nozzle
222": second treatment liquid injection nozzle 230: packing
300: treatment liquid supply tank 400: gas-liquid separation treatment liquid play unit
400': first gas-liquid separation treatment liquid Regeneration unit 400": second gas-liquid separation treatment liquid play unit
410: separation unit body 410': first separation unit body
410": second separation unit body 411: liquid flow path
411': 1st liquid flow path 411": 2nd 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: microbubble generator 521: micropores
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 return pipe LG': Gas return pipe 1
LG" : 2nd gas return pipe LA : Air inlet pipe
LA' : 1st air inlet pipe LA" : 2nd air inlet pipe
LP: treatment liquid supply pipe LP': first treatment liquid supply pipe
LP": Second 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 regulating 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 sensor SS1: first storage area
SS2: second storage area

Claims (15)

Sulfur oxide contained in the exhaust gas is absorbed and removed by the first treatment liquid injected into the exhaust gas, and carbon dioxide contained in the exhaust gas from which the sulfur oxide is removed is absorbed by the second treatment liquid injected into the exhaust gas from which the sulfur oxide has been removed a gas-liquid reactor to be removed;
a treatment liquid supply tank for supplying a second treatment liquid to the gas-liquid reactor; and
Gas-liquid separation for separating carbon dioxide from a second waste treatment liquid, which is a second treatment liquid that has absorbed carbon dioxide, drained from the gas-liquid reactor, and regenerating it as a second treatment liquid, and supplying the regenerated second treatment liquid to the treatment liquid supply tank treatment liquid regeneration unit; including,
In the gas-liquid reactor, a first removal region in which sulfur oxides are removed by contact with the exhaust gas, a second removal region in which carbon dioxide is removed by contact with the exhaust gas and the second processing liquid, and the first removal region and a connection area connecting the second removal area to the exhaust gas treatment apparatus. The exhaust gas treatment apparatus according to claim 1, wherein the gas-liquid reactor includes a housing whose interior is partitioned into the first removal region, the second removal region, and the connection region by a plurality of partition walls. The housing according to claim 2, wherein a plurality of partition walls are provided inside the housing so that exhaust gas flows from the bottom to the top in the first removal region and the second removal region and the exhaust gas flows from the top to the bottom in the connection region. Exhaust gas treatment device provided in the. 3. The method of claim 2, wherein the housing has an exhaust gas exhaust device and an inlet connected to the first removal region, an outlet connected to the second removal region, a first drain port connected to the first removal region, and the second An exhaust gas treatment device having a second drain port connected to the removal area. The gas-liquid reactor of claim 2 , wherein the gas-liquid reactor comprises a first treatment liquid injection unit that injects a first treatment liquid to the exhaust gas flowing through the first removal region, and a second treatment solution to the exhaust gas flowing through the second removal region. The exhaust gas treatment apparatus further comprising a second treatment liquid spraying unit for spraying the liquid. The exhaust gas treatment apparatus according to claim 5, wherein the first treatment liquid is seawater. The exhaust gas treatment apparatus of claim 6, wherein a first treatment liquid supply pipe connected to the ocean is connected to the first treatment liquid injection unit, and a first waste treatment liquid drain pipe connected to the ocean is connected to the first removal area. The exhaust gas treatment apparatus according to claim 5, wherein the first treatment liquid injection unit is plural. The exhaust gas treatment apparatus according to claim 5, wherein a second treatment liquid supply pipe connected to the treatment liquid supply tank is connected to the second treatment liquid injection unit. According to claim 1, wherein in the gas-liquid separation treatment liquid regeneration unit, the gas-liquid separation membrane through which carbon dioxide passes but does not pass through the second waste treatment liquid comprises a liquid flow path through which the second waste treatment solution flows and a gas flow path through which carbon dioxide flows. The exhaust gas treatment apparatus partitions the gas flow path so that a low partial pressure of carbon dioxide is formed in the gas flow path, so that the carbon dioxide contained in the second waste treatment liquid of the liquid flow path passes through the gas-liquid separation membrane and moves to the gas flow path. The exhaust gas according to claim 10, wherein a second waste treatment solution drain pipe connected to the gas-liquid reactor is connected to one side of the liquid flow path, and the other side of the liquid flow path is connected to the treatment solution supply tank by a treatment solution recovery pipe. gas processing equipment. The exhaust gas treatment apparatus according to claim 10, wherein a gas return pipe having a vacuum pump is connected to one side of the gas flow path to form a low partial pressure of carbon dioxide in the gas flow path. The exhaust gas treatment apparatus according to claim 12, wherein an air inlet pipe having a flow rate control valve is connected to the other side of the gas flow path to control the partial pressure of carbon dioxide formed in the gas flow path. The exhaust gas treatment apparatus according to claim 10, wherein the gas-liquid separation membrane is a hollow fiber membrane in which the gas flow path or the liquid flow path is formed. The exhaust gas treatment apparatus according to claim 6, wherein the second treatment liquid is an alkaline aqueous solution.

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