KR20210046627A - Exhaust gas treatment apparatus and ship having the same - Google Patents

Abstract

Disclosed are an exhaust gas treatment device and a ship having the same. According to one embodiment of the present invention, the exhaust gas treatment device comprises: a reactor where exhaust gas is introduced; a treatment liquid tank supplying treatment liquid injected to the reactor and recovering waste water treating the exhaust gas; and a treatment liquid production unit separately provided from the treatment liquid tank to produce the treatment liquid. The treatment liquid tank and the treatment liquid production unit can be respectively connected by a treatment liquid supply line and a treatment liquid recovery line to allow the treatment liquid to flow according to components of the treatment liquid.

Description

Exhaust gas treatment system and ship including it {EXHAUST GAS TREATMENT APPARATUS AND SHIP HAVING THE SAME}

The present invention relates to an exhaust gas treatment device for treating exhaust gas discharged from an exhaust gas discharge device such as an engine, and a ship including the same.

The ship is equipped with an exhaust gas discharge device for discharging exhaust gas such as an engine or a boiler.

Among the exhaust gas emission devices, there are some exhaust gases in which sulfur oxides are less than a predetermined treatment standard amount by burning a gas such as low sulfur oil or LNG as a fuel. In this case, it is possible to discharge the exhaust gas to the outside without treating sulfur oxides from the exhaust gas in an exhaust gas treatment device such as a scrubber provided on the ship so as to be connected to the exhaust gas discharge device.

On the other hand, carbon dioxide is designated as a greenhouse gas (GHG) that causes global warming, and accounts for 80% of total greenhouse gas emissions. Policies are underway in the direction of regulating emissions. For this reason, IMO finally decided to introduce the Energy Efficiency Desing Index (EEDI) for new ships to be built in the future, thereby reducing greenhouse gases such as carbon dioxide by 30% compared to the previous year by 2025. It is a situation that must be done.

Accordingly, even when the exhaust gas in which the sulfur oxide is less than the predetermined treatment standard amount is discharged from the exhaust gas discharge device as described above, there is a need to remove carbon dioxide.

Further, in the case of an exhaust gas discharge device using high sulfur oil as a fuel, carbon dioxide from the exhaust gas must be removed after removing sulfur oxides from the exhaust gas in an exhaust gas treatment device such as a scrubber.

For example, in the case of a very large crude oil carrier (VLCC) that uses heavy fuel oil (HFO) as fuel, about 70,000 tons of carbon dioxide are generated per year, and EEDI Phase 2 (20% Reduction) requires various additional facilities such as a waste heat recovery system (WHRS, Waste Heat Recovery System) or an energy storage system (ESS, Energy Storage System).

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

One aspect of the object of the present invention is to remove carbon dioxide from exhaust gas.

Another aspect of the object of the present invention is to make a treatment liquid injected into the exhaust gas by mixing seawater and an alkali agent in order to remove carbon dioxide from the exhaust gas.

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

An exhaust gas treatment apparatus according to an embodiment of the present invention includes a reactor through which exhaust gas is introduced; A treatment liquid tank for supplying a treatment liquid injected into the reactor and recovering wastewater treated with exhaust gas; And a treatment liquid manufacturing unit provided separately from the treatment liquid tank to prepare a treatment liquid. And the treatment liquid tank and the treatment liquid production unit may be connected to each other by a treatment liquid supply line and a treatment liquid recovery line so that the treatment liquid is movable according to components of the treatment liquid.

In this case, the components of the processing liquid can be detected by the processing liquid component detection sensor.

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

In addition, the treatment liquid production unit makes a treatment liquid by mixing seawater and an alkali agent, and the treatment liquid production unit is connected to a seawater tank in which seawater is stored, an alkali agent tank in which the alkali agent is stored, and the seawater tank and the alkali agent tank, respectively. It may include a mixing tank in which the seawater and the alkali agent supplied from the seawater tank and the alkali agent tank are mixed to form a treatment liquid.

In addition, the treatment liquid production unit stores a treatment liquid generation auxiliary that helps the seawater and the alkali agent to become a treatment liquid, and is connected to the mixing tank to provide an auxiliary agent tank for supplying the treatment liquid generation auxiliary to the mixing tank. Can include.

In addition, in the treatment liquid production unit, a treatment liquid is prepared by mixing fresh water and an alkali agent, and the treatment liquid production unit is connected to a fresh water tank in which fresh water is stored, an alkali agent tank in which an alkali agent is stored, and a fresh water tank and an alkali agent tank. It may include a mixing tank in which fresh water and an alkali agent supplied from the fresh water tank and the alkali agent tank are mixed to form a treatment liquid.

In addition, a valve and a pump may be provided in the treatment liquid supply line, so that the treatment liquid is supplied from the treatment liquid production unit to the treatment liquid tank.

In addition, a valve and a pump may be provided in the treatment liquid recovery line so that at least a part of the treatment liquid in the treatment liquid tank is recovered to the treatment liquid production unit.

A ship according to an embodiment of the present invention includes a hull; And the above-described exhaust gas treatment device provided on the hull. It may include.

As described above, according to the exemplary embodiment of the present invention, carbon dioxide can be removed from exhaust gas.

In addition, according to an embodiment of the present invention, in order to remove carbon dioxide from the exhaust gas, a treatment liquid injected into the exhaust gas may be made by mixing seawater and an alkali agent.

1 is a view showing a first embodiment of an exhaust gas treatment apparatus according to the present invention.
Fig. 2 is a diagram showing a treatment liquid manufacturing unit and related configurations of the first embodiment of the exhaust gas treatment apparatus according to the present invention.
3 is a view showing a first embodiment of a ship according to the present invention.
Fig. 4 is an enlarged view of a portion of a first embodiment of a ship according to the present invention equipped with a first embodiment of the exhaust gas treatment apparatus according to the present invention.
Fig. 5 is a graph showing the carbon dioxide removal rate from exhaust gas by the treatment liquid when a treatment liquid is prepared by mixing fresh water and an alkali agent and a treatment liquid is prepared by mixing seawater and an alkaline agent.
6 is a view showing a second embodiment of an exhaust gas treatment apparatus according to the present invention.
Fig. 7 is an enlarged view like Fig. 4 showing a second embodiment of a ship according to the present invention.
Fig. 8 is a diagram showing a third embodiment of an exhaust gas treatment apparatus according to the present invention.
Fig. 9 is an enlarged view like Fig. 4 showing a third embodiment of a ship according to the present invention.
Fig. 10 is a diagram showing a fourth embodiment of an exhaust gas treatment apparatus according to the present invention.
Fig. 11 is an enlarged view like Fig. 4 showing a fourth embodiment of a ship according to the present invention.

In order to help understand the features of the present invention as described above, an exhaust gas treatment apparatus and a ship including the same according to an embodiment of the present invention will be described in more detail below.

The embodiments described below will be described on the basis of 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, but will be described below. It is to illustrate that the present invention can be implemented as in the embodiments. Accordingly, the present invention can be variously modified within the technical scope of the present invention through the embodiments described below, and such modified embodiments will fall within the technical scope of the present invention. And, with reference to the reference numerals in the accompanying drawings in order to help understand the embodiments to be described below, related elements among elements that perform the same function in each exemplary embodiment are indicated by numbers on the same or extended line.

Exhaust Gas Treatment System and Ship First Embodiment

Hereinafter, a first embodiment of an exhaust gas treatment apparatus and a ship according to the present invention will be described with reference to FIGS. 1 to 5.

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 a treatment liquid manufacturing unit and related configurations of a first embodiment of the exhaust gas treatment apparatus according to the present invention, Fig. 3 is a view showing a first embodiment of a ship according to the present invention, and Fig. 4 is an enlarged part of a first embodiment of a ship according to the present invention equipped with a first embodiment of the exhaust gas treatment apparatus according to the present invention. 5 is a graph showing the carbon dioxide removal rate from exhaust gas by the treatment liquid when a treatment liquid is prepared by mixing fresh water and an alkali agent, and when a treatment liquid is prepared by mixing seawater and an alkaline agent.

[Exhaust gas treatment device]

The first embodiment of the exhaust gas treatment apparatus 100 according to the present invention may include a reactor 200 and a treatment unit 300.

The reactor 200 may be connected to an engine 31 such as a main engine 31a or an engine 31b for power generation, or an exhaust gas discharge device 30 such as a boiler 32 as shown in FIG. 4. Accordingly, the exhaust gas discharged from the exhaust gas discharge device 30 may be introduced into the reactor 200.

The reactor 200 may be provided with an exhaust gas inlet 210 as shown in FIG. 1. In addition, the exhaust gas inlet 210 may be connected to an exhaust pipe PG connected to the exhaust gas discharge device 30. As illustrated in FIG. 4, a flow path switching valve VR may be provided at a portion where the exhaust gas inlet 210 is connected to the exhaust pipe PG. And, when the flow path switching valve (VR) is switched to the exhaust gas inlet 210 side, the exhaust gas discharged from the exhaust gas discharge device 30 flows through the exhaust pipe (PG), etc., through the exhaust gas inlet 210 200) It can flow inside.

The exhaust gas inlet 210 may be provided below the reactor 200 as shown in FIG. 1. However, the portion of the reactor 200 in which the exhaust gas inlet 210 is provided is not particularly limited, and the exhaust gas discharged from the exhaust gas discharge device 30 is connected to the exhaust gas discharge device 30. Any part of the reactor 200 may be provided as long as it can be introduced into the interior.

Meanwhile, a heat recovery unit 400 may be provided between the exhaust gas discharge device 30 and the reactor 200. For example, as shown in FIGS. 3 and 4, the heat recovery unit 400 may be provided in the exhaust pipe PG to which the exhaust gas inlet 210 is connected.

The exhaust gas flowing from the exhaust gas discharge device 30 to the reactor 200 may be heat recovered by the heat recovery unit 400. Accordingly, the temperature of the exhaust gas flowing into the reactor 200 may be cooled to a predetermined desired temperature or lower. In addition, the heat recovered by the heat recovery unit 400 may be used to generate steam and be used for heating or to heat fuel. Accordingly, thermal efficiency can be improved.

The heat recovery unit 400 may be, for example, a heat exchanger, an economizer, or a thermoelectric module. However, the heat recovery unit 400 is not particularly limited, and any known one is possible as long as it is provided between the exhaust gas discharge device 30 and the reactor 200 to recover heat from the exhaust gas.

The exhaust gas may be cooled to, for example, 100° C. or less by the heat recovery unit 400. In the case of the economizer, which is a conventional heat recovery unit 400, the temperature of the exhaust gas after cooling is 160°C to 180°C due to the generation of sulfuric acid and plugging of ash and heavy metals, but the exhaust gas according to the present invention Since the above-described problem does not occur in the processing apparatus 100, the temperature of the exhaust gas after cooling can be made to be 100°C or less. For example, by increasing the flow rate of water flowing through the heat recovery unit 400 to cool the exhaust gas by receiving heat from the exhaust gas, the exhaust gas may be cooled to 100°C or less.

In this way, when the temperature of the exhaust gas is cooled to 100° C. or less by the heat recovery unit 400, the temperature of the exhaust gas before being cooled by the heat recovery unit 400 and the exhaust gas after being cooled by the heat recovery unit 400 are The difference from temperature can be relatively large. Accordingly, the heat recovered by the heat recovery unit 400 may be relatively large. In addition, the temperature of the exhaust gas flowing into the reactor 200 through the exhaust gas inlet 210 may be an optimum condition in which carbon dioxide is removed by a treatment liquid to be described later.

The reactor 200 may be provided with an exhaust gas outlet 220. Exhaust gas processed by the processing unit 300 while flowing inside the reactor 200, for example, from which carbon dioxide has been removed, may be discharged through the exhaust gas outlet 220. The exhaust gas outlet 220 may be provided above the reactor 200. However, the portion of the reactor 200 in which the exhaust gas outlet 220 is provided is not particularly limited, and provided in any portion of the reactor 200 as long as it is a portion in which the exhaust gas treated by the processing unit 300 can be discharged. Can be.

A wastewater drain 230 may be provided in the reactor 200. The wastewater, which is a treatment liquid in which carbon dioxide or the like is removed from the exhaust gas, is injected into the reactor 200 by the treatment unit 300 to treat the cooling liquid or exhaust gas that cools the exhaust gas. Can be drained through. A wastewater drainage line LD is connected to the wastewater drain 230 as shown in FIG. 1, and the wastewater drainage line LD may be connected to a wastewater purification unit (not shown). In addition, the wastewater drained from the wastewater drainage port 230 is supplied to the wastewater purification unit through the wastewater drainage line LD, and after being purified in the wastewater purification unit, it may be discharged to the outside, for example, to the outside of the ship 10. The wastewater drain 230 may be provided in the lower part of the reactor 200. However, the part of the reactor 200 in which the wastewater drainage port 230 is provided is not particularly limited, and may be provided in any part of the reactor 200 as long as it is a part in which wastewater can be drained.

As shown in FIG. 1, a porous plate PH may be provided at a portion inside the reactor 200 next to the exhaust gas inlet 210 in the exhaust gas flow direction. Accordingly, the exhaust gas introduced into the reactor 200 through the exhaust gas inlet 210 may pass through the porous plate PH. The distribution of the flow rate in the reactor 200 of the exhaust gas may be relatively uniform due to the porous plate PH. And thereby, the treatment of the exhaust gas by the processing unit 300 can be smoothly performed.

A first injection unit 310 and a second injection unit 320, which will be described later, included in the processing unit 300, may be provided at a portion inside the reactor 200 after the perforated plate (PH) in the flow direction of the exhaust gas. have. In addition, a packing (PC) may be provided at a portion of the inside of the reactor 200 between the first injection unit 310 and the second injection unit 320. By the packing (PC), a contact area and a contact time between the treatment liquid injected from the second injection unit 320 and the exhaust gas may be increased, so that the removal rate of carbon dioxide from the exhaust gas by the treatment liquid may be improved.

The processing unit 300 is provided inside the reactor 200 to remove carbon dioxide, etc. from exhaust gas flowing inside the reactor 200. For example, the processing unit 300 may remove carbon dioxide from the exhaust gas by injecting a processing liquid capable of chemically adsorbing carbon dioxide contained in the exhaust gas into the reactor 200. The treatment liquid may be, for example, an aqueous alkali solution. For example, fresh water and sodium hydroxide (NaOH), an alkaline agent, may be mixed to prepare an aqueous sodium hydroxide solution, which is an alkaline aqueous solution. When the aqueous sodium hydroxide solution is used as a treatment liquid for removing carbon dioxide from exhaust gas, the chemical reaction equation in which carbon dioxide is chemically adsorbed to the treatment liquid and removed from the exhaust gas is as follows.

[Chemical Reaction Formula]

CO ₂ + H ₂ O ↔ CO ₃ ^2- + 2H ⁺

NaOH ↔ Na ^{+ +} OH ^-

CO ₃ ^2- + 2Na ⁺ ↔ Na ₂ CO ₃

2CO ₃ ^2- + 2Na ⁺ + 2H ⁺ ↔ 2NaHCO ₃

However, the aqueous alkali solution used as the treatment liquid is not limited to the aqueous sodium hydroxide solution, and any alkali aqueous solution may be used. In addition, the treatment liquid is not limited to an aqueous alkali solution, and any known solution may be used as long as it is injected into the exhaust gas to remove carbon dioxide from the exhaust gas.

As shown in FIG. 1, the processing unit 300 may include a first injection unit 310, a second injection unit 320, and a processing liquid tank 340.

At least a portion of the first injection unit 310 may be provided in a portion inside the reactor 200 after the exhaust gas inlet 210 in the flow direction of the exhaust gas. For example, the first injection unit 310 may be provided in a portion inside the reactor 200 between the porous plate PH and the packing PC.

The first injection unit 310 may inject a cooling liquid into the exhaust gas. Accordingly, the temperature of the exhaust gas flowing into the reactor 200 may be cooled to a temperature below a temperature at which carbon dioxide is chemically adsorbed to the treatment liquid and removed from the exhaust gas. For example, the temperature of the exhaust gas flowing into the reactor 200 through the exhaust gas inlet 210 through the exhaust gas inlet 210 may be cooled to 100° C. or less by injection of the cooling liquid from the first injection unit 310. On the other hand, as described above, when the exhaust gas is cooled by the heat recovery unit 400, and the temperature of the exhaust gas is lowered to, for example, 100°C or less before flowing into the reactor 200, the first injection unit 310 It may not be necessary to spray the coolant in.

The coolant sprayed from the first injection unit 310 may be seawater, for example. However, the cooling liquid injected from the first injection unit 310 is not particularly limited, and the temperature of the exhaust gas injected into the exhaust gas is cooled to a temperature below the temperature at which carbon dioxide is chemically adsorbed to the treatment liquid and removed from the exhaust gas. As long as it can be made, anything known is possible.

The first injection unit 310 may include a first supply pipe 311 and a first injection nozzle 312.

At least a portion of one side of the first supply pipe 311 may be provided inside the reactor 200. In addition, the other side of the first supply pipe 311 may be connected to a cooling liquid supply source (not shown). In addition, a pump P and a valve V may be provided in the first supply pipe 311 as shown in FIG. 1. Accordingly, when the valve V is opened and the pump P is driven, the cooling liquid of the cooling liquid supply source, for example, seawater, may flow through the first supply pipe 311.

The first injection nozzle 312 may be provided in a portion of the first supply pipe 311 provided in the reactor 200. Accordingly, the cooling liquid flowing through the first supply pipe 311, for example, seawater, may be injected into the reactor 200 through the first injection nozzle 312. The cooling liquid may be injected into the reactor 200 in a direction opposite to the flow direction of the exhaust gas through the first injection nozzle 312. However, the cooling liquid may be injected into the reactor 200 in the exhaust gas flow direction through the first injection nozzle 312, and may be injected into the reactor 200 in a vertical direction in the exhaust gas flow direction to prevent channeling. It may be sprayed into the reactor 200 in any direction, such as that.

At least a portion of the second injection unit 320 may be provided in a portion inside the reactor 200 after the first injection unit 310. For example, the second injection unit 320 may be provided in a portion inside the reactor 200 after the packing (PC) as shown in FIG. 1. The second injection unit 320 may include a second supply pipe 321 and a second injection nozzle 322.

At least a portion of one side of the second supply pipe 321 may be provided inside the reactor 200. In addition, the other side of the second supply pipe 321 may be connected to a treatment liquid tank 340 that will be described later in which the treatment liquid is stored. In addition, the second supply pipe 321 may be provided with a pump (P) and a valve (V). Accordingly, when the valve V is opened and the pump P is driven, the treatment liquid stored in the treatment liquid tank 340 may flow through the second supply pipe 321.

The second injection nozzle 322 may be provided in a portion of the second supply pipe 321 provided in the reactor 200. Accordingly, the treatment liquid flowing through the second supply pipe 321 may be injected into the reactor 200 through the second injection nozzle 322. The treatment liquid may be injected into the reactor 200 in a direction opposite to the flow direction of the exhaust gas through the second injection nozzle 322. However, the treatment liquid may be injected into the reactor 200 in the exhaust gas flow direction through the second injection nozzle 322, and may be injected into the reactor 200 in a vertical direction in the exhaust gas flow direction to prevent channeling. It may be sprayed into the reactor 200 in any direction, such as may be.

The treatment liquid may be stored in the treatment liquid tank 340. In addition, the other side of the second supply pipe 321 of the second spray unit 320 may be connected to the treatment liquid tank 340. The treatment liquid tank 340 may be provided with a treatment liquid component detection sensor 341 capable of detecting a component of the treatment liquid. When the components of the treatment liquid detected by the treatment liquid component detection sensor 341 do not satisfy a predetermined desired component, at least a part of the treatment liquid in the treatment liquid tank 340 is a treatment liquid manufacturing unit 350 to be described later. The treatment liquid may be sent to the treatment liquid manufacturing unit 350 or may be supplied to the treatment liquid tank 340.

The processing unit 300 may further include a processing liquid manufacturing unit 350. The treatment liquid manufacturing unit 350 is connected to the treatment liquid tank 340 and may make a treatment liquid and supply it to the treatment liquid tank 340. To this end, the treatment liquid manufacturing unit 350 may be connected to the treatment liquid tank 340 by a treatment liquid supply line LP as shown in FIG. 1. A valve V and a pump P may be provided in the treatment liquid supply line LP. Accordingly, when the valve V is opened and the pump P is driven, the treatment liquid produced by the treatment liquid manufacturing unit 350 may be supplied to the treatment liquid tank 340 through the treatment liquid supply line LP.

The treatment liquid manufacturing unit 350 may recover at least a part of the treatment liquid from the treatment liquid tank 340. For example, as described above, when the component of the treatment liquid of the treatment liquid tank 340 detected by the treatment liquid component detection sensor 341 does not satisfy a predetermined desired component, the treatment liquid of the treatment liquid tank 340 At least a portion of the may be recovered in the treatment liquid manufacturing unit 350.

To this end, the treatment liquid manufacturing unit 350 may be connected to the treatment liquid tank 340 by a treatment liquid recovery line LR. In addition, a valve V and a pump P may be provided in the treatment liquid recovery line LR. Accordingly, when the valve V is opened and the pump P is driven, at least a part of the treatment liquid in the treatment liquid tank 340 may be recovered to the treatment liquid manufacturing unit 350.

In the treatment liquid manufacturing unit 350, at least one of seawater and fresh water and an alkali agent may be mixed to prepare an aqueous alkali solution as a treatment liquid.

As can be seen from the graph shown in Fig. 5, an aqueous alkali solution, which is a treatment solution made by mixing fresh water and an alkali agent, has a higher carbon dioxide removal rate from exhaust gas than an aqueous alkali solution, which is a treatment solution made by mixing seawater and an alkali agent . However, in the case of mixing fresh water and an alkali agent to prepare an alkaline aqueous solution as a treatment liquid, more cost and equipment are required than when making an alkaline aqueous solution as a treatment liquid by mixing seawater and an alkali agent. Accordingly, in the treatment liquid manufacturing unit 350, an alkaline aqueous solution as a treatment liquid may be prepared in consideration of this relationship.

The treatment liquid manufacturing unit 350 may include a seawater tank 351, a fresh water tank 352, an alkali tank 353, and a mixing tank 355, as shown in FIG. 2.

The mixing tank 355 may be connected to the seawater tank 351, the fresh water tank 352, and the alkali tank 353, respectively, by connection lines LC. In addition, the mixing tank 355 is supplied with seawater from the seawater tank 351, fresh water is supplied from the fresh water tank 352, and an alkali agent such as sodium hydroxide (NaOH) can be supplied from the alkaline agent tank 353. have. Accordingly, in the mixing tank 355, at least one of seawater and fresh water and an alkali agent are mixed to prepare an aqueous alkali solution as a treatment liquid.

In this case, the seawater tank 351 may be connected to, for example, a seawater supply line LS connected to a seawater supply source (not shown) such as the ocean as shown in FIG. 2. A pump (P) is provided in the seawater supply line (LS), and the seawater is supplied to the seawater tank 351 from the seawater supply source through the seawater supply line (LS) by driving the pump (P) of the seawater supply line (LS). I can.

A heater HE may be provided in the seawater supply line LS. By the heater HE, the temperature of seawater supplied to the seawater tank 351 through the seawater supply line LS may be higher than a predetermined temperature. For example, seawater supplied to the seawater tank 351 through the seawater supply line LS may be heated to 20°C or higher by the heater HE. As a result, it is possible to more easily prepare the treatment liquid in the mixing tank 355. When the temperature of the seawater supplied to the seawater tank 351 is less than 20°C, even if the seawater and the alkali agent are mixed, the alkali agent is difficult to dissolve in the seawater, and thus an aqueous alkali solution as a treatment liquid is difficult to be produced. Therefore, if the temperature of the seawater supplied to the seawater tank 351 is heated to 20°C or higher by the heater (HE), the alkali agent can be easily dissolved in the seawater. Can be made easily.

The heater (HE) provided in the seawater supply line (LS) is not particularly limited, and the temperature of the seawater provided to the seawater supply line (LS) and supplied to the seawater tank 351 through the seawater supply line (LS) is set to a predetermined temperature. Any known heater (HE) can be used as long as it can be heated above.

The processing liquid manufacturing unit 350 may further include an auxiliary agent tank 354. The auxiliary tank 354 may also be connected to the mixing tank 355 by a connection line LC.

The auxiliary agent tank 354 may store a processing liquid generation auxiliary that helps to become a processing liquid by mixing seawater and an alkali agent. And, it is possible to supply the processing liquid generation auxiliary to the mixing tank 355. Thereby, when the treatment liquid is produced in the treatment liquid manufacturing unit 350 using seawater, when the seawater and the alkali agent are mixed, reaction by-products, etc., which may be produced by the reaction of the component contained in the seawater and the alkali agent, can be removed. have. Accordingly, a treatment liquid made of seawater containing more impurities than fresh water can prevent a reduction in a carbon dioxide removal rate for removing carbon dioxide from exhaust gas than a treatment liquid made of fresh water. The auxiliary agent for generating the processing liquid stored in the auxiliary agent tank 354 is not particularly limited, and any known auxiliary agent may be used as long as it can help to become a processing solution by mixing seawater and an alkali agent.

In the exhaust gas treatment apparatus 100 having this configuration, the flow of the cooling liquid or the treatment liquid is in one direction, and the wastewater is not recovered and recycled, and thus the configuration thereof is not required, and thus the configuration can be made relatively simple.

Meanwhile, the processing unit 300 may further include a processing liquid separation unit 360 as shown in FIG. 2.

The treatment liquid separation unit 360 may be connected to the treatment liquid tank 340 by a treatment liquid separation line LV. And, as in the second to fourth embodiments of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention to be described later, the treatment liquid tank 340 is a reactor 200 by a wastewater recovery line (LW). It may be connected to the wastewater drain 230 of. In addition, seawater injected into the reactor 200 to treat exhaust gas or wastewater as a treatment liquid may be recovered to the treatment liquid tank 340 through a wastewater recovery line LW. Thereby, the wastewater may be mixed with the treatment liquid in the treatment liquid tank 340. In this way, the wastewater recovered to the treatment liquid tank 340 may be supplied to the treatment liquid separation unit 360 through the treatment liquid separation line LV. For example, a valve V and a pump P may be provided in the treatment liquid separation line LV. And, as described above, the components of the treatment liquid detected by the treatment liquid component detection sensor 341 provided in the treatment liquid tank 340 are recovered by recovering the wastewater to the treatment liquid tank 340. If not satisfied, by opening the valve (V) of the treatment liquid separation line (LV) and operating the pump (P), the treatment liquid separation unit 360 through the treatment liquid separation line (LV) together with a part of the treatment liquid. Can be supplied to

The treatment liquid separation unit 360 may separate treatment liquid from wastewater. For example, in the treatment liquid separation unit 360, the treatment liquid can be separated from the wastewater by filtering foreign substances other than the treatment liquid from the wastewater using a filter (not shown). However, the configuration for separating the treatment liquid from the wastewater in the treatment liquid separation unit 360 is not particularly limited, and any known configuration may be used as long as it is a configuration capable of separating the treatment liquid from the wastewater.

The treatment liquid separation unit 360 and the mixing tank 355 of the treatment liquid production unit 350 may be connected by a separation treatment liquid supply line LF. Accordingly, the treatment liquid separated by the treatment liquid separation unit 360 may be supplied to the mixing tank 355 through the separation treatment liquid supply line LF. Thereby, it is possible to save the treatment liquid and the fresh water or sea water used to make the treatment liquid, or an alkali agent or treatment liquid generation auxiliary.

A separation wastewater drainage line (LDD) may be connected to the treatment liquid separation unit 360. In addition, the wastewater from which the treatment liquid is separated in the treatment liquid separation unit 360 may be drained through the separation wastewater drainage line (LDD). The separated wastewater drainage line (LDD) may be connected to the wastewater purification unit. The wastewater from which the treatment liquid is separated and discharged through the separated wastewater drainage line (LDD) may be purified in a wastewater purification unit and then discharged to the outside, for example, to the outside of the ship 10.

[Ship]

The first embodiment of the ship 10 according to the present invention may include a hull 20 and the exhaust gas treatment apparatus 100 described above.

The hull 20 is provided with an engine 31 such as a main engine 31a or an engine for power generation 31b, or an exhaust gas discharge device 30 such as a boiler 32, as shown in FIGS. 3 and 4 Can be. In addition, the hull 20 may be provided with a stack 21 and a housing 22.

The exhaust gas treatment device 100 may be provided on the hull 20. For example, the exhaust gas treatment apparatus 100 may be provided on the stack 21 of the hull 20. Further, the exhaust gas treatment device 100 is connected to the exhaust gas discharge device 30 to process the exhaust gas discharged from the exhaust gas discharge device 30. The portion of the hull 20 in which the exhaust gas treatment device 100 is provided is not particularly limited, and is connected to the exhaust gas discharge device 30 to treat the exhaust gas discharged from the exhaust gas discharge device 30 If so, it may be provided on any part of the hull 20.

Exhaust gas treatment device and ship second embodiment

Hereinafter, a second embodiment of an exhaust gas treatment apparatus and a ship according to the present invention will be described with reference to FIGS. 6 and 7.

Fig. 6 is a view showing a second embodiment of an exhaust gas treatment apparatus according to the present invention, and Fig. 7 is an enlarged view like Fig. 4 showing a second embodiment of a ship according to the present invention.

Here, the second embodiment of the exhaust gas treatment device and the ship according to the present invention is the first embodiment of the exhaust gas treatment device and the ship according to the present invention described with reference to Figs. There is a difference in that the wastewater, which is a cooling liquid or treatment liquid used to remove carbon dioxide from exhaust gas by being injected, is drained, or the treatment liquid is separated from the wastewater by recovering the wastewater.

Accordingly, a wastewater drainage valve (VD) is provided in the wastewater drainage line (LD) connected to the wastewater drainage port 230 of the reactor 200, and is connected to the treatment liquid tank 340, and the wastewater recovery valve (VW) and wastewater recovery A wastewater recovery line (LW) equipped with a pump (PW) is further connected to the wastewater drain (230), and the treatment unit (300) further includes a third injection unit (330), and the first, second, and third injection units There is a difference in that the first, second, and third supply pipes 311, 321, and 331 of (310, 320, 330) are all connected to the treatment liquid tank 340, and the seawater injection supply line LE is connected to the first supply pipe 311.

Therefore, in the following description, different configurations will be mainly described, and the remaining configurations may be referred to as those described with reference to FIGS. 1 to 5.

In the second embodiment of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention, as shown in FIG. 6, the waste water in the waste water drainage line LD connected to the wastewater drain 230 of the reactor 200 A wastewater recovery line (LW) provided with a drainage valve (VD), connected to the treatment liquid tank 340, and equipped with a wastewater recovery valve (VW) and a wastewater recovery pump (PW) may be further connected to the wastewater drainage port 230. have.

Accordingly, when the wastewater recovery valve VW is closed and the wastewater drainage valve VD is opened, the wastewater discharged from the wastewater drainage port 230 may be drained through the wastewater drainage line LD. That is, wastewater, which is a cooling liquid or a treatment liquid injected into the reactor 200, may be discharged through the wastewater drainage line LD in an open loop state.

In addition, when the wastewater drainage valve (VD) is closed, the wastewater recovery valve (VW) is opened, and the wastewater recovery pump (PW) is driven, the wastewater discharged from the wastewater drainage port 230 is discharged from the wastewater recovery line (LW) through the treatment liquid tank. Can be recovered to (340). That is, it may be in a closed loop state in which wastewater, which is a cooling liquid or a treatment liquid injected into the reactor 200, is recovered. In this way, the wastewater recovered to the treatment liquid tank 340 flows to the treatment liquid separation unit 360 through the treatment liquid separation line LV as described above, and the treatment liquid in the treatment liquid separation unit 360 This can be separated.

In the second embodiment of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention, as shown in FIG. 6, the treatment unit 300 may further include a third injection unit 330. At least a portion of the third injection unit 330 may be provided in a portion inside the reactor 200 after the second injection unit 320 in the exhaust gas flow direction.

The third injection unit 330 may include a third supply pipe 331 and a third injection nozzle 332.

At least a portion of one side of the third supply pipe 331 may be provided inside the reactor 200. The third injection nozzle 332 may be provided in a portion of the third supply pipe 331 provided in the reactor 200. Accordingly, the treatment liquid flowing through the third supply pipe 331 may be injected into the reactor 200 through the third injection nozzle 332. The treatment liquid may be injected into the reactor 200 in a direction opposite to the flow direction of the exhaust gas through the third injection nozzle 332. However, the treatment liquid may be injected into the reactor 200 in the exhaust gas flow direction through the third injection nozzle 332 and may be injected into the reactor 200 in the vertical direction of the exhaust gas flow direction to prevent channeling. It may be sprayed into the reactor 200 in any direction, such as may be.

In the second embodiment of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention, the first, second, and third supply pipes 311, 321, 331 of the first, second, and third injection units 310, 320, 330 are all treated liquid tanks ( 340). For example, as shown in FIG. 6, a treatment liquid supply line LT equipped with a treatment liquid supply pump PT is connected to the treatment liquid tank 340, and the first, second, and third injection units 310, 320, 330 All of the first, second, and third supply pipes 311, 321, and 331 may be connected to the treatment liquid supply line LT. In addition, first, second, and third treatment liquid supply valves VT1, VT2, and VT3 may be provided in the first, second, and third supply pipes 311, 321, and 331, respectively.

In addition, in the second embodiment of the exhaust gas treatment apparatus 100 according to the present invention, as shown in FIG. 6, seawater spraying connected to a seawater supply source such as ocean to the first supply pipe 311 of the first spraying unit 310 The supply line LE may be connected. In this case, the seawater supply source may be a cooling source supply source. In addition, the seawater injection supply line LE may be provided with a seawater injection supply valve VE and a seawater injection supply pump PE.

As described above, the wastewater recovery valve (VW) is closed and the wastewater drainage valve (VD) is in an open open loop state, the first treatment liquid supply valve (VT1) is closed, and the seawater injection supply valve (VE) and the second, third The treatment liquid supply valves VT2 and VT3 can be opened. And, it is possible to operate the seawater injection supply pump (PE) and the treatment liquid supply pump (PT).

Accordingly, seawater is injected into the exhaust gas as a cooling liquid through the first injection nozzle 312 of the first injection unit 310, and the second and third injection nozzles 322 and 332 of the second and third injection units 320 and 330 are Through this, the treatment liquid in the treatment liquid tank 340 is injected into the exhaust gas to remove carbon dioxide from the exhaust gas. In this case, the second and third treatment liquid supply valves VT2 and VT3 may be both open or only one of them may be opened depending on the amount of treatment liquid to be injected.

In addition, in a closed loop state where the wastewater drainage valve VD is closed and the wastewater recovery valve VW is open, the seawater injection supply valve VE is closed, and the first, second, and third treatment liquid supply valves (VT1, VT2, VT3) Can all be opened. And, it is possible to operate the treatment liquid supply pump (PT) and the wastewater recovery pump (PW).

Accordingly, the treatment liquid of the treatment liquid tank 340 is injected into the exhaust gas through the first, second, and third injection nozzles 312, 322, and 332 of the first, second, and third injection units 310, 320, 330 to remove carbon dioxide from the exhaust gas. I can. In this case, the first, second, and third treatment liquid supply valves VT1, VT2, and VT3 may all be opened, only two, or only one may be opened depending on the amount of the treatment liquid to be injected. In addition, the wastewater may be recovered to the treatment liquid tank 340 through the wastewater recovery line LW. Also, in this case, if necessary, the first treatment liquid supply valve VT1 is closed, the seawater injection supply valve VE is opened, and the seawater injection supply pump PE is operated, Seawater may be sprayed through the 1-injection nozzle 312.

In the second embodiment of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention having such a configuration, it is possible to convert to a closed loop state in which wastewater is recovered and recycled as needed, so that chemical substances such as alkali agents are used. The amount can be minimized, the open loop state and the closed loop state can be selectively used depending on the situation, and the amount of waste water can be reduced as the waste water is recycled, thereby reducing waste water treatment costs.

Exhaust gas treatment device and the third embodiment of the ship

Hereinafter, a third embodiment of an exhaust gas treatment apparatus and a ship according to the present invention will be described with reference to FIGS. 8 and 9.

Fig. 8 is a view showing a third embodiment of an exhaust gas treatment apparatus according to the present invention, and Fig. 9 is an enlarged view like Fig. 4 showing a third embodiment of a ship according to the present invention.

Here, a third embodiment of an exhaust gas treatment apparatus and a ship according to the present invention is a second embodiment of the exhaust gas treatment apparatus and ship according to the present invention described with reference to Figs. 6 and 7 above, and a processing unit ( In 300), there is a difference in that at least one of sulfur oxides and carbon dioxide is removed from the exhaust gas.

Accordingly, the seawater injection supply line LE is branched into the first, second, and third seawater injection supply lines LE1, LE2, and LE3, respectively, and the first, second, and third injection units 310, 320, and 330 of the treatment unit 300 It is connected to the first, second, and third supply pipes 311, 321, 331, respectively, and the first, second, and third seawater injection supply valves (VE1, VE2, VE3) are connected to the first, second, and third seawater injection supply lines (LE1, LE2, LE3). There is a difference in that each is provided.

Therefore, in the following description, different configurations will be mainly described, and the remaining configurations may be referred to as those described with reference to FIGS. 1 to 7.

In the third embodiment of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention, as shown in Fig. 8, the seawater injection supply line LE is the first, second, and third seawater injection supply lines ( LE1, LE2, LE3) can be branched respectively. In addition, the first, second, and third seawater injection supply lines LE1, LE2, and LE3 may be connected to the first, second, and third supply pipes 311, 321, and 331 of the first, second, and third injection units 310, 320, and 330, respectively. In addition, the first, second, and third seawater injection supply valves VE1, VE2, and VE3 may be provided in the first, second, and third seawater injection supply lines LE1, LE2, and LE3, respectively.

In this case, as shown in FIG. 8, a packing (PC) may also be provided at a portion of the inside of the reactor 200 between the second injection unit 320 and the third injection unit 330.

In the third embodiment of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention having the above-described configuration, it is necessary to remove sulfur oxides from the exhaust gas by using low sulfur oil as fuel in the exhaust gas discharge device 30 If there is no, carbon dioxide can be removed from the exhaust gas as follows.

With the wastewater recovery valve (VW) closed and the wastewater drainage valve (VD) open in an open loop, the second and third seawater injection supply valves (VE2, VE3) and the first treatment liquid supply valve (VT1) are closed and the first seawater injection The supply valve VE1 and the second and third treatment liquid supply valves VT2 and VT3 can be opened. And, it is possible to operate the seawater injection supply pump (PE) and the treatment liquid supply pump (PT).

Accordingly, the first injection nozzle 312 of the first injection unit 310 injects seawater as a cooling liquid into the exhaust gas, and the second and third injection nozzles 322 and 332 of the second and third injection units 320 and 330 are processed. The liquid can be injected into the exhaust gas to remove carbon dioxide from the exhaust gas. In addition, the wastewater may be drained through the wastewater drainage line LD.

When the wastewater drainage valve (VD) is closed and the wastewater recovery valve (VW) is open in a closed loop, the first, second, and third seawater injection supply valves (VE1, VE2, VE3) are all closed and the first, second, and third treatment liquids are supplied. All of the valves VT1, VT2, and VT3 can be opened. And, it is possible to operate the treatment liquid supply pump (PT) and the wastewater recovery pump (PW). Accordingly, the first, second, and third injection nozzles 312, 322, and 332 of the first, second, and third injection units 310, 320, and 330 all spray the treatment liquid to the exhaust gas to remove carbon dioxide from the exhaust gas. In addition, wastewater may be recovered to the treatment liquid tank 340 through the wastewater recovery line LW.

In the closed loop state, the second and third seawater injection supply valves (VE2, VE3) and the first treatment liquid supply valve (VT1) are closed, and the first seawater injection supply valve (VE1) and the second and third treatment liquid supply valves (VT2) are closed. ,VT3) is opened, and the seawater injection supply pump (PE), the treatment liquid supply pump (PT), and the wastewater recovery pump (PW) may be operated. Accordingly, the first injection nozzle 312 of the first injection unit 310 injects seawater into the exhaust gas, and the second and third injection nozzles 322 and 332 of the second and third injection units 320 and 330 reduce the exhaust gas. Treatment liquid can be sprayed. In addition, the wastewater may be recovered to the treatment liquid tank 340 through the wastewater recovery line LW.

In the closed loop state, the second and third seawater injection supply valves VE2 and VE3 and the first and second treatment liquid supply valves VT1 and VT2 are closed, and the first seawater injection supply valve VE1 and the third treatment liquid are closed. The supply valve VT3 is opened and may operate the seawater injection supply pump PE, the treatment liquid supply pump PT, and the wastewater recovery pump PW. Accordingly, the first injection nozzle 312 of the first injection unit 310 injects seawater into the exhaust gas, and the third injection nozzle 332 of the third injection unit 330 injects the treatment liquid into the exhaust gas. And, nothing may be injected from the second injection nozzle 322 of the second injection unit 320. In addition, the wastewater may be recovered to the treatment liquid tank 340 through the wastewater recovery line LW.

Meanwhile, in the closed loop state, if necessary, the wastewater recovery valve VW is closed and the wastewater drainage valve VD is opened, so that the wastewater may be drained through the wastewater drainage line LD.

In the third embodiment of the exhaust gas treatment device 100 and the ship 10 according to the present invention, when it is necessary to remove sulfur oxides from the exhaust gas by using high sulfur oil as fuel in the exhaust gas discharge device 30, As shown below, only sulfur oxides can be removed from exhaust gas, or sulfur oxides and carbon dioxide can be removed at the same time.

In this case, the wastewater recovery valve VW may be closed and the wastewater drainage valve VD may be in an open loop state.

In the case of removing only sulfur oxide, in the open loop state, the first, second, and third treatment liquid supply valves (VT1, VT2, VT3) and the third seawater injection supply valve (VE3) are closed, and the first and second seawater injection supply valves are closed. (VE1, VE2) can be opened. And, it is possible to drive the seawater injection supply pump (PE). Accordingly, seawater may be injected into the exhaust gas from the first and second injection nozzles 312 and 322 of the first and second injection units 310 and 320. Thereby, sulfur oxides can be removed from the exhaust gas. In this case, the third seawater injection supply valve VE3 may also be opened according to the amount of seawater to be injected. In addition, the wastewater may be drained through the wastewater drainage line LD.

In addition, when removing sulfur oxide and carbon dioxide at the same time, the first and second treatment liquid supply valves VT1 and VT2 and the third seawater injection supply valve VE3 are closed and the first and second seawater injection supply in the open loop state. The valves VE1 and VE2 and the third treatment liquid supply valve VT3 are opened, and the seawater injection supply pump PE and the treatment liquid supply pump PT can be operated. Accordingly, in the first and second injection nozzles 312 and 322 of the first and second injection units 310 and 320, seawater is injected into the exhaust gas to remove sulfur oxides from the exhaust gas, and the third injection unit 330 In the nozzle 332, the treatment liquid is injected into the exhaust gas to remove carbon dioxide from the exhaust gas. In addition, the wastewater may be drained through the wastewater drainage line LD.

In the third embodiment of the exhaust gas treatment device 100 and the ship 10 according to the present invention having such a configuration, one exhaust gas treatment device 100 is used, and in the exhaust gas discharge device 30, low sulfur oil or high sulfur oil Depending on whether or not to use as fuel, it is possible to remove only carbon dioxide from exhaust gas, only sulfur oxide, or simultaneously remove sulfur oxide and carbon dioxide.

Exhaust gas treatment device and ship 4th embodiment

Hereinafter, a fourth embodiment of an exhaust gas treatment apparatus and a ship according to the present invention will be described with reference to FIGS. 10 and 11.

Fig. 10 is a view showing a fourth embodiment of an exhaust gas treatment apparatus according to the present invention, and Fig. 11 is an enlarged view like Fig. 4 showing a fourth embodiment of a ship according to the present invention.

Here, the fourth embodiment of the exhaust gas treatment apparatus and the ship according to the present invention is the second embodiment of the exhaust gas treatment apparatus according to the present invention described with reference to FIGS. 6 and 7 above, and the processing unit 300. In the reactor 200, at least one of sulfur oxides and carbon dioxide is removed from the exhaust gas, and a partition unit 240 that divides the inside of the reactor 200 into a first region RG1 and a second region RG2 is provided. There is a difference in that it is provided.

Accordingly, the seawater injection supply line LE is branched to the first and second seawater injection supply lines LE1 and LE2, respectively, and is connected to the first and second supply pipes 311 and 321 of the first and second injection units 310 and 320, respectively. , The first and second seawater injection supply lines (LE1, LE2) are provided with first and second seawater injection supply valves (VE1, VE2), respectively, and the inside of the reactor 200 is located in the first region (RG1). ) And a second area (RG2) is provided, a second area wastewater drainage line (LWA) is connected to the second area (RG2), and a second area wastewater drainage line (LWA) is treated. The second area wastewater recovery line LWB connected to the liquid tank 340 is connected, and the second area wastewater drainage line LWA and the second area wastewater recovery line LWB respectively have a second area wastewater drainage valve VWA. ) And the second area wastewater recovery valve (VWB) is provided.

Therefore, in the following description, different configurations will be mainly described, and the remaining configurations may be referred to as those described with reference to FIGS. 1 to 7.

In the fourth embodiment of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention, as shown in Fig. 10, the seawater injection supply line LE is the first and second seawater injection supply lines LE1, Each can be branched into LE2). In addition, the first and second seawater injection supply lines LE1 and LE2 may be connected to the first and second supply pipes 311 and 321 of the first and second injection units 310 and 320, respectively. In addition, first and second seawater injection supply valves VE1 and VE2 may be provided in the first and second seawater injection supply lines LE1 and LE2, respectively.

In this case, a packing (PC) may also be provided at a portion inside the reactor 200 between the second injection unit 320 and the third injection unit 330.

In the fourth embodiment of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention, as shown in FIG. 10, the inside of the reactor 200 is placed in the first region RG1 and the inside of the reactor 200. A partition unit 240 partitioned into the second region RG2 may be provided. The partition unit 240 removes carbon dioxide from the exhaust gas by flowing the exhaust gas from the first region RG1 to the second region RG2, but being injected from the third injection unit 330 to the second region RG2. Wastewater, which is a treatment liquid used for, may be drained or recovered without flowing to the first region RG1.

For example, the partition unit 240 may be provided in a portion of the inside of the reactor 200 between the second injection unit 320 and the third injection unit 330. In this case, by the partition unit 240, the inside of the reactor 200 includes a first region RG1 and a third injection unit 330 in which the first injection unit 310 and the second injection unit 320 are provided. It may be partitioned into a second area RG2 provided therein.

The partition unit 240 may include a partition member 241, a connection member 242, and a cover member 243. The partition member 241 is a reactor 200 between the second injection unit 320 and the third injection unit 330 so that the inside of the reactor 200 is divided into a first region RG1 and a second region RG2. ) Is provided inside, and a passage portion (not shown) through which the exhaust gas passes may be formed. For example, the partition member 241 may have a square truncated shape with a hollow inside. In addition, the lower ends of the plurality of connecting members 242, for example, the lower ends of the four connecting members 242 may be connected to the upper corners of the partition member 241, respectively. In addition, the cover member 243 may be connected to the upper ends of the plurality of connecting members 242 so that the treatment liquid sprayed from the third injection unit 330 does not pass through the passage portion of the partition member 241. For example, the cover member 243 may have a square pyramid shape with an empty inside.

In the fourth embodiment of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention, the second area wastewater drainage line LWA is connected to the second area RG2, and the second area wastewater drainage line ( LWA) is connected to the second area wastewater recovery line LWB connected to the treatment liquid tank 340, and the second area wastewater drainage line LWA and the second area wastewater recovery line LWB are respectively connected to the second area wastewater. A drain valve VWA and a second area wastewater recovery valve VWB may be provided.

The second area wastewater drainage line LWA may be connected to the wastewater purification unit. And, the wastewater drained from the second area wastewater drainage line (LWA) is supplied to the wastewater purification unit through the second area wastewater drainage line (LWA), after being purified by the wastewater purification unit, to the outside, for example, to the outside of the ship 10. Can be drained.

In the fourth embodiment of the exhaust gas treatment device 100 and the ship 10 according to the present invention having the above-described configuration, it is necessary to remove sulfur oxides from the exhaust gas by using low sulfur oil as fuel in the exhaust gas discharge device 30 If there is no, carbon dioxide can be removed from the exhaust gas as follows.

With the wastewater recovery valve (VW) closed and the wastewater drainage valve (VD) open in an open loop, the second seawater injection supply valve (VE2) and the first treatment liquid supply valve (VT1) are closed, and the first seawater injection supply valve (VE1) is closed. ) And the second and third treatment liquid supply valves VT2 and VT3 can be opened. In addition, the second area wastewater recovery valve VWB may be closed and the second area wastewater drainage valve VWA may be opened. In addition, it is possible to operate the seawater injection supply pump (PE) and the treatment liquid supply pump (PT).

Accordingly, seawater is injected as a cooling liquid into the exhaust gas from the first injection nozzle 312 of the first injection unit 310, and the second and third injection nozzles 322 and 332 of the second and third injection units 320 and 330 are processed. The liquid is injected into the exhaust gas so that carbon dioxide can be removed from the exhaust gas. In addition, seawater used to remove carbon dioxide from exhaust gas or wastewater, which is a treatment liquid, may be drained through the wastewater drainage line LD and the second zone wastewater drainage line LWA.

In addition, in the closed loop state of the wastewater drainage valve (VD) closed and the waste recovery valve (VW) open, the first and second seawater injection supply valves (VE1, VE2) are all closed, and the first, second, and third treatment liquid supply valves ( VT1, VT2, VT3) can all be opened. In addition, the second area wastewater drainage valve VWA may be closed and the second area wastewater recovery valve VWB may be opened. And, it is possible to operate the treatment liquid supply pump (PT) and the wastewater recovery pump (PW).

Accordingly, the treatment liquid is injected into the exhaust gas from the first, second, and third injection nozzles 312, 322, and 332 of the first, second, and third injection units 310, 320, and 330, so that carbon dioxide can be removed from the exhaust gas. In addition, wastewater, which is a treatment liquid from which carbon dioxide is removed from the exhaust gas, may be recovered to the treatment liquid tank 340 through the wastewater recovery line LW and the second area wastewater recovery line LWB.

In the closed loop state, the second seawater injection supply valve VE2 and the first treatment liquid supply valve VT1 are closed, and the first seawater injection supply valve VE1 and the second and third treatment liquid supply valves VT2 and VT3 are closed. It is open, and it is possible to operate the seawater injection supply pump (PE), the treatment liquid supply pump (PT), and the wastewater recovery pump (PW). Accordingly, seawater is injected as a cooling liquid into the exhaust gas from the first injection nozzle 312 of the first injection unit 310, and the second and third injection nozzles 322 and 332 of the second and third injection units 320 and 330 are processed. The liquid is injected into the exhaust gas so that carbon dioxide can be removed from the exhaust gas. In addition, seawater from which carbon dioxide has been removed from the exhaust gas or wastewater as a treatment liquid may be recovered in the treatment liquid tank 340 through the wastewater recovery line LW and the second area wastewater recovery line LWB.

In the closed loop state, the second seawater injection supply valve VE2 and the first and second treatment liquid supply valves VT1 and VT2 are closed, and the first seawater injection supply valve VE1 and the third treatment liquid supply valve VT3 are closed. ) Is opened, and the seawater injection supply pump (PE), the treatment liquid supply pump (PT), and the wastewater recovery pump (PW) can be operated. Accordingly, seawater is injected into the exhaust gas from the first injection nozzle 312 of the first injection unit 310 as a cooling liquid, and the treatment liquid is discharged from the third injection nozzle 332 of the third injection unit 330. Carbon dioxide is removed from the exhaust gas by being injected into the air, and nothing may be injected from the second injection nozzle 322 of the second injection unit 320. In addition, the wastewater may be recovered to the treatment liquid tank 340 through the wastewater recovery line LW and the second area wastewater recovery line LWB.

Meanwhile, in the closed loop state, if necessary, the wastewater recovery valve VW is closed and the wastewater drainage valve VD is opened, so that the wastewater may be drained through the wastewater drainage line LD.

In the fourth embodiment of the exhaust gas treatment device 100 and the ship 10 according to the present invention, when it is necessary to remove sulfur oxides from the exhaust gas by using high sulfur oil as fuel in the exhaust gas discharge device 30, As shown below, only sulfur oxides can be removed from exhaust gas, or sulfur oxides and carbon dioxide can be removed at the same time.

In this case, the wastewater recovery valve VW may be closed and the wastewater drainage valve VD may be in an open loop state.

When removing only sulfur oxides, in the open loop state, the first, second, and third treatment liquid supply valves (VT1, VT2, VT3) are all closed and the first and second seawater injection supply valves (VE1, VE2) can be opened. have. And, it is possible to operate the seawater injection supply pump (PE). Accordingly, seawater may be injected into the exhaust gas from the first and second injection nozzles 312 and 322 of the first and second injection units 310 and 320 to remove sulfur oxides from the exhaust gas. In addition, wastewater may be drained through the wastewater drainage line LD.

When removing sulfur oxide and carbon dioxide at the same time, in the open loop state, the first and second treatment liquid supply valves (VT1, VT2) are closed, and the first and second seawater injection supply valves (VE1, VE2) and the third treatment liquid are supplied. The valve VT3 can be opened. In addition, the second area wastewater recovery valve VWB may be closed and the second area wastewater drainage valve VWA may be opened. In addition, it is possible to operate the seawater injection supply pump (PE) and the treatment liquid supply pump (PT). Accordingly, seawater is injected into the exhaust gas from the first and second injection nozzles 312 and 322 of the first and second injection units 310 and 320 to remove sulfur oxide from the exhaust gas, and the third injection of the third injection unit 330 The processing liquid is injected into the exhaust gas from the nozzle 332 to remove carbon dioxide from the exhaust gas. In this case, the wastewater may be drained through the wastewater drainage line LD and the second zone wastewater drainage line LWA.

When removing sulfur oxide and carbon dioxide at the same time, in the open loop state, the first and second treatment liquid supply valves (VT1, VT2) are closed, and the first and second seawater injection supply valves (VE1, VE2) and the third treatment liquid are supplied. The valve VT3 can be opened. In addition, the second area wastewater drainage valve VWA may be closed and the second area wastewater recovery valve VWB may be opened. In addition, it is possible to operate the seawater injection supply pump (PE) and the treatment liquid supply pump (PT). Accordingly, the seawater is injected into the exhaust gas from the first and second injection nozzles 312 and 322 of the first and second injection units 310 and 320 to remove sulfur oxides from the exhaust gas. The treatment liquid is injected into the exhaust gas from the three-injection nozzle 332 so that carbon dioxide may be removed from the exhaust gas. In this case, the wastewater may be drained through the wastewater drainage line LD or may be recovered to the treatment liquid tank 340 through the second area wastewater recovery line LWB.

In the third embodiment of the exhaust gas treatment device 100 and the ship 10 according to the present invention having such a configuration, one exhaust gas treatment device 100 is used, and in the exhaust gas discharge device 30, low sulfur oil or high sulfur oil Depending on whether to use as fuel, only carbon dioxide from exhaust gas, only sulfur oxide, or sulfur oxide and carbon dioxide may be simultaneously removed, and the inside of the reactor 200 by the partition unit 240 is, for example, a first injection unit ( 310) and a first area (RG1) provided with the second injection unit 320 and a second area (RG2) provided with the third injection unit 330, at least among sulfur oxides and carbon dioxide from the exhaust gas. One or more removal efficiency can be maximized.

As described above, when the exhaust gas treatment apparatus and the ship including the same according to the present invention are used, carbon dioxide can be removed from the exhaust gas, and in order to remove carbon dioxide from the exhaust gas, the treatment liquid injected into the exhaust gas is mixed with seawater and alkali It can be made by mixing.

The exhaust gas treatment apparatus described above is not limitedly applicable to the configuration of the above-described embodiments, but the embodiments may be configured by selectively combining all or part of each of the embodiments so that various modifications can be made. have.

10: ship 20: hull
21: stack 22: residence
30: exhaust gas emission device 31: engine
31a: main engine 31b: power generation engine
32: boiler 100: exhaust gas treatment device
200: reactor 210: exhaust gas inlet
220: exhaust gas outlet 230: wastewater drain
240: compartment unit 241: compartment member
242: connecting member 243: cover member
300: processing unit 310: first injection unit
311: first supply pipe 312: first injection nozzle
320: second injection unit 321: second supply pipe
322: second injection nozzle 330: third injection unit
331: 3rd supply pipe 332: 3rd injection nozzle
340: treatment liquid tank 341: treatment liquid component detection sensor
350: treatment liquid manufacturing unit 351: seawater tank
352: fresh water tank 353: alkaline tank
354: auxiliary tank 355: mixing tank
360: treatment liquid separation unit 400: heat recovery unit
LD: Wastewater drainage line LC: Connection line
LS: Seawater supply line LP, LT: Treatment liquid supply line
LR: Treatment liquid recovery line LW: Wastewater recovery line
LV: Treatment liquid separation line LF: Separation treatment liquid supply line
LDD: Separated wastewater drainage line LWA: Second zone wastewater drainage line
LWB: 2nd area wastewater recovery line LE: seawater injection supply line
LE1: 1st seawater injection supply line LE2: 2nd seawater injection supply line
LE3: 3rd seawater spray supply line PH: perforated plate
PC: Packing V: Valve
VD: wastewater drainage valve VW: wastewater recovery valve
VWA: 2nd area wastewater drainage valve VWB: 2nd area wastewater recovery valve
VE: seawater injection supply valve VE1: the first seawater injection supply valve
VE2: 2nd seawater injection supply valve VE3: 3rd seawater injection supply valve
VT1: first treatment liquid supply valve VT2: second treatment liquid supply valve
VT3: 3rd processing liquid supply valve VR: flow path switching valve
P: Pump PW: Wastewater recovery pump
PE: Seawater injection supply pump PT: Treatment liquid supply pump
RG1: first area RG2: second area
PG: Exhaust pipe HE: Heater

Claims (9)

A reactor through which exhaust gas is introduced;
A treatment liquid tank for supplying a treatment liquid injected into the reactor and recovering wastewater treated with exhaust gas; And
A treatment liquid manufacturing unit provided separately from the treatment liquid tank to prepare a treatment liquid; Including,
The treatment liquid tank and the treatment liquid production unit are respectively connected to each other by a treatment liquid supply line and a treatment liquid recovery line so that the treatment liquid is movable according to components of the treatment liquid. The method of claim 1,
An exhaust gas treatment apparatus in which the components of the treatment liquid are detected by a treatment liquid component detection sensor. The method of claim 1,
The treatment liquid is an aqueous alkali solution. The method of claim 1,
In the treatment liquid manufacturing unit, a treatment liquid is prepared by mixing seawater and an alkali agent,
The treatment liquid production unit is connected to a seawater tank for storing seawater, an alkali tank for storing an alkali agent, and a seawater tank and an alkali tank, respectively, and the seawater and alkali agent supplied from the seawater tank and the alkali tank are mixed to form a treatment liquid Exhaust gas treatment device including a mixing tank to. The method of claim 4,
The treatment liquid production unit further comprises an auxiliary agent tank storing a treatment liquid generation auxiliary that helps to become a treatment liquid by mixing the seawater and the alkali agent, and is connected to the mixing tank to supply the treatment liquid generation auxiliary to the mixing tank. Exhaust gas treatment device. The method of claim 1,
In the treatment liquid manufacturing unit, a treatment liquid is prepared by mixing fresh water and an alkali agent,
The treatment liquid manufacturing unit is connected to a fresh water tank for storing fresh water, an alkaline agent tank for storing an alkali agent, and a fresh water tank and an alkali agent tank, respectively. Exhaust gas treatment device including a mixing tank to. The method of claim 1,
The treatment liquid supply line is provided with a valve and a pump to supply the treatment liquid from the treatment liquid production unit to the treatment liquid tank. The method of claim 7,
The treatment liquid recovery line is provided with a valve and a pump, so that at least a part of the treatment liquid from the treatment liquid tank is recovered to the treatment liquid production unit. hull; And
The exhaust gas treatment device according to any one of claims 1 to 8 provided in the hull;
Ships containing.

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