KR102296747B1 - Exhaust gas treatment apparatus and ship having the same - Google Patents

Abstract

Disclosed are an exhaust gas treatment device and a ship including the same.
An exhaust gas treatment apparatus according to an embodiment of the present invention includes a reactor into which exhaust gas is introduced; and a processing unit provided inside the reactor and configured to remove carbon dioxide from the exhaust gas by spraying a cooling liquid and a processing liquid to the exhaust gas. Including, the treatment liquid may be an aqueous alkali solution for chemically adsorbing carbon dioxide contained in the exhaust gas to remove it from the exhaust gas.

Description

Exhaust gas treatment device and ship including the same

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

The ship is provided with an exhaust gas exhaust device from which exhaust gas such as an engine or a boiler is discharged.

Among the exhaust gas emission devices, there is a type of exhaust gas containing less sulfur oxides 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 the sulfur oxides from the exhaust gas in an exhaust gas treatment device such as a scrubber provided on a ship so as to be connected to the exhaust gas exhaust device.

On the other hand, carbon dioxide is designated as a greenhouse gas (GHG) that causes global warming and accounts for 80% of the total greenhouse gas emission. Policies are moving in the direction of regulating emissions. For this reason, the IMO has finally decided to introduce an Energy Efficiency Designing Index (EEDI) index for new ships to be built in the future. situation that has to be

Therefore, as described above, even when the exhaust gas containing less sulfur oxide than a predetermined treatment reference amount is discharged from the exhaust gas exhaust device, the need to remove carbon dioxide is emerging.

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

For example, in the case of a Very Large Crude Oil Carrier (VLCC) using heavy fuel oil (HFO) as fuel, about 70,000 tons of carbon dioxide is generated per year, and EEDI Phase 2 (20% reduction), various additional facilities such as a Waste Heat Recovery System (WHRS) or an Energy Storage System (ESS) are required.

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 remove carbon dioxide from exhaust gas.

Another aspect of the object of the present invention is to allow the removal of carbon dioxide from exhaust gases in a relatively simple configuration.

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

An exhaust gas treatment apparatus according to an embodiment of the present invention includes a reactor into which exhaust gas is introduced; and a processing unit provided inside the reactor and configured to remove carbon dioxide from the exhaust gas by spraying a cooling liquid and a processing liquid to the exhaust gas. Including, the treatment liquid may be an aqueous alkali solution for chemically adsorbing carbon dioxide contained in the exhaust gas to remove it from the exhaust gas.

In this case, the exhaust gas may be cooled to 100° C. or less before being introduced into the reactor or before the treatment liquid is injected inside the reactor.

In addition, a heat recovery unit for cooling the exhaust gas by recovering heat from the exhaust gas before the exhaust gas flows into the reactor; may further include.

In addition, the processing unit includes a first injection unit that injects a cooling liquid to the exhaust gas, a second injection unit that injects a processing liquid to the exhaust gas, and the processing liquid is stored and connected to the second injection unit to supply the processing liquid It may include a treatment liquid tank.

In addition, the cooling liquid may be seawater.

And, the reactor is provided with an exhaust gas inlet through which exhaust gas is introduced, and at least a portion of the first injection unit is provided in a portion inside the reactor next to the exhaust gas inlet in the flow direction of the exhaust gas, and the second At least a portion of the injection unit may be provided in a portion inside the reactor next to the first injection unit in the flow direction of the exhaust gas.

In addition, the first injection unit includes a first supply pipe at least partially provided inside the reactor at one side and connected to a coolant supply source at the other side, and a portion of the first supply pipe provided inside the reactor so that the cooling liquid is supplied to the exhaust gas. It may include a first injection nozzle for spraying the.

In addition, a pump and a valve may be provided in the first supply pipe.

In addition, the second injection unit includes a second supply pipe, at least a part of which is provided inside the reactor and the other side connected to the treatment liquid tank, and a portion of the second supply pipe provided inside the reactor to provide exhaust gas. It may include a second injection nozzle for spraying the treatment liquid.

In addition, the reactor has an exhaust gas outlet through which the exhaust gas treated by the treatment unit is discharged, and a waste water drain port through which wastewater, which is a cooling liquid or treatment liquid used to remove carbon dioxide from the exhaust gas by being sprayed into the exhaust gas, is discharged. can be provided.

In addition, a wastewater drain line may be connected to the wastewater drain port, and the wastewater drain line may be connected to a waste water purification unit for purifying wastewater.

In addition, a perforated plate may be provided in a portion inside the reactor between the exhaust gas inlet and the first injection unit.

In addition, a packing for increasing the contact area and contact time between the treatment liquid and the exhaust gas may be provided in a portion inside the reactor between the first injection unit and the second injection unit.

The treatment unit may further include a treatment liquid production unit connected to the treatment liquid tank and supplying the treatment liquid to the treatment liquid tank.

In addition, in the treatment liquid manufacturing unit, 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.

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; may include.

As described above, according to the embodiment of the present invention, it is possible to remove carbon dioxide from the exhaust gas.

In addition, according to the embodiment of the present invention, carbon dioxide can be removed from the exhaust gas with a relatively simple configuration.

1 is a view showing a first embodiment of an exhaust gas treatment apparatus according to the present invention.
2 is a view showing a treatment liquid production unit of the first embodiment of the exhaust gas treatment apparatus according to the present invention and related components thereof.
3 is a view showing a first embodiment of a ship according to the present invention.
4 is an enlarged view of a portion of a first embodiment of a ship according to the present invention provided with a first embodiment of an exhaust gas treatment apparatus according to the present invention;
5 is a graph showing the carbon dioxide removal rate from the exhaust gas by the treatment liquid in the case of making a treatment liquid by mixing fresh water and an alkali agent and in the case of preparing a treatment liquid by mixing seawater and an alkali agent.
6 is a view showing a second embodiment of the exhaust gas treatment apparatus according to the present invention.
7 is an enlarged view similar to FIG. 4 showing a second embodiment of a ship according to the present invention.
8 is a view showing a third embodiment of an exhaust gas treatment apparatus according to the present invention.
9 is an enlarged view similar to FIG. 4 showing a third embodiment of a ship according to the present invention.
10 is a view showing a fourth embodiment of an exhaust gas treatment apparatus according to the present invention.
11 is an enlarged view similar to FIG. 4 showing a fourth embodiment of a ship 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 and a ship including the same 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 shown in the accompanying drawings to help the understanding of the embodiments described below, related components among the components that perform the same operation in each embodiment are indicated by the same or extended numbers.

Exhaust gas treatment device and ship 1st 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 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, 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 an exhaust gas treatment apparatus according to the present invention 5 is a graph showing the carbon dioxide removal rate from the exhaust gas by the treatment liquid when the treatment liquid is prepared by mixing fresh water and an alkali agent and when the treatment liquid is prepared by mixing seawater and an alkali 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 .

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

As shown in FIG. 1 , the reactor 200 may be provided with an exhaust gas inlet 210 . Also, the exhaust gas inlet 210 may be connected to the exhaust pipe PG connected to the exhaust gas exhaust device 30 . 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, as shown in FIG. 4 . 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 exhaust device 30 flows through the exhaust pipe (PG), etc. through the exhaust gas inlet 210 to the reactor ( 200) can be introduced into the interior.

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

Meanwhile, a heat recovery unit 400 may be provided between the exhaust gas exhaust 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 exhaust 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 less. In addition, the heat recovered by the heat recovery unit 400 may be used for heating, etc. by producing steam or for heating fuel. Accordingly, thermal efficiency may 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 is provided between the exhaust gas exhaust device 30 and the reactor 200 to recover heat from the exhaust gas, and any known one may be used.

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 the 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 the plugging phenomenon of ash and heavy metals, etc., but the exhaust gas according to the present invention Since the above-mentioned problem does not occur in the processing apparatus 100, the temperature of the exhaust gas after cooling can be made to be 100 degrees C or less. For example, the flow rate of water flowing through the heat recovery unit 400 may be increased compared to the prior art so that the exhaust gas can be cooled by receiving heat from the exhaust gas so that the exhaust gas is 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 The difference with the temperature may 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 optimal condition in which carbon dioxide is removed by a treatment liquid, which will be described later.

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

The reactor 200 may be provided with a waste water outlet 230 . The cooling liquid or exhaust gas that is sprayed into the reactor 200 by the treatment unit 300 to cool the exhaust gas, for example, wastewater, which is a treatment liquid obtained by removing carbon dioxide from the exhaust gas as described below, is discharged through the waste water drain port 230 . can be drained through. As shown in FIG. 1 , a waste water drain line LD is connected to the waste water drain port 230 , and the waste water drain line LD may be connected to a waste water purification unit (not shown). And, the wastewater drained from the wastewater drain 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 drained to the outside, for example, to the outside of the ship 10 . The waste water outlet 230 may be provided at the lower portion of the reactor 200 . However, the portion of the reactor 200 provided with the wastewater drain port 230 is not particularly limited, and any portion of the reactor 200 may be provided as long as the wastewater can be drained.

As shown in FIG. 1 , a perforated plate PH may be provided in the portion inside the reactor 200 after 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 perforated plate PH. The flow rate distribution in the reactor 200 of the exhaust gas may be relatively uniform by the perforated plate PH. And thereby, the treatment of the exhaust gas by the processing unit 300 can be performed smoothly.

A first injection unit 310 and a second injection unit 320 to be described later included in the processing unit 300 may be provided in the 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 in a portion inside the reactor 200 between the first injection unit 310 and the second injection unit 320 . Due to the packing PC, the contact area and contact time between the treatment liquid and the exhaust gas injected from the second injection unit 320 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 and the like from the exhaust gas flowing inside the reactor 200 . For example, the treatment unit 300 may remove carbon dioxide from the exhaust gas by injecting a treatment 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, by mixing fresh water and sodium hydroxide (NaOH), which is an alkali agent, an aqueous alkali solution of sodium hydroxide can be prepared. As described above, when the sodium hydroxide aqueous solution is used as a treatment liquid for removing carbon dioxide from the 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 aqueous alkali solution can be used. In addition, the treatment liquid is not limited to an aqueous alkali solution, and any known treatment liquid may be used as long as it is sprayed onto the exhaust gas to remove carbon dioxide from the exhaust gas.

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

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 perforated plate PH and the packing PC.

The first injection unit 310 may inject a cooling liquid to the exhaust gas. Accordingly, the temperature of the exhaust gas flowing into and flowing into the reactor 200 may be cooled to a temperature below 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 may be cooled to 100° C. or less by the injection of the cooling liquid of the first injection unit 310 . On the other hand, when the exhaust gas is cooled by the heat recovery unit 400 as described above, and the temperature of the exhaust gas is, 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

The coolant sprayed from the first spray unit 310 may be, for example, seawater. However, the cooling liquid injected from the first injection unit 310 is not particularly limited, and the cooling liquid 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 done, 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, the first supply pipe 311 may be provided with a pump (P) and a valve (V) as shown in FIG. Accordingly, when the valve V is opened and the pump P is driven, the coolant from the coolant 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 exhaust gas flow direction 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 the vertical direction in the exhaust gas flow direction to prevent channeling. It may be sprayed into the reactor 200 in any direction, such as there.

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 to 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 exhaust gas flow direction 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 to be injected into the reactor 200 in the 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.

A 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 injection 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 components of the treatment liquid. When the component of the treatment liquid detected by the treatment liquid component detection sensor 341 does not satisfy a predetermined desired component, at least a portion of the treatment liquid in the treatment liquid tank 340 is transferred to the treatment liquid preparation unit 350 to be described later. The treatment liquid sent to or produced in the treatment liquid production unit 350 may be supplied to the treatment liquid tank 340 .

The processing unit 300 may further include a processing liquid preparation unit 350 . The treatment liquid manufacturing unit 350 is connected to the treatment liquid tank 340 , and may produce 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 the 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 in the treatment liquid production 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 portion of the treatment liquid in the treatment liquid tank 340 . For example, as described above, when the component of the treatment liquid in the treatment liquid tank 340 detected by the treatment liquid component detection sensor 341 does not satisfy a predetermined desired component, the treatment liquid in the treatment liquid tank 340 . At least a portion of may be recovered to the treatment liquid production unit 350 .

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

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

As can be seen from the graph shown in FIG. 5, the 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 the 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 aqueous alkali solution as a treatment solution, more costs and facilities are required than in the case of mixing seawater and an alkali agent to prepare an aqueous alkali solution as a treatment solution. Accordingly, the treatment liquid manufacturing unit 350 may prepare an aqueous alkali solution as the treatment liquid in consideration of this relationship.

The treatment liquid manufacturing unit 350 may include a seawater tank 351 , a fresh water tank 352 , an alkali agent 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 alkaline agent tank 353 by a connection line LC, respectively. In addition, the mixing tank 355 receives seawater from the seawater tank 351, receives fresh water from the fresh water tank 352, and receives alkaline agents such as sodium hydroxide (NaOH) 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 may be mixed to form an aqueous alkali solution serving as a treatment solution.

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

A heater HE may be provided in the seawater supply line LS. By the heater HE, the temperature of the seawater supplied to the seawater tank 351 through the seawater supply line LS may be set to a predetermined temperature or higher. For example, seawater supplied to the seawater tank 351 through the seawater supply line LS may be heated to 20° C. or more by the heater HE. Accordingly, it is possible to more easily manufacture the processing 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, so that it is difficult to produce an aqueous alkali solution as a treatment solution. Therefore, when the temperature of the seawater supplied to the seawater tank 351 is heated to 20° C. or more by the heater HE, the alkali agent can be easily dissolved in the seawater, so that the alkali aqueous solution is a treatment solution by mixing seawater and alkali agent. 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 in 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 beyond the above.

The treatment liquid preparation 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.

In the auxiliary tank 354, a treatment liquid generating auxiliary agent that helps to be a treatment liquid by mixing seawater and an alkali agent may be stored. In addition, the processing liquid generation auxiliary may be supplied to the mixing tank 355 . Accordingly, when seawater is used to prepare a treatment liquid in the treatment liquid manufacturing unit 350 using seawater, when seawater and an alkali agent are mixed, reaction by-products that may be formed by reacting components included in seawater with an alkali agent can be removed. have. Therefore, it is possible to prevent the carbon dioxide removal rate for removing carbon dioxide from the exhaust gas from a reduction in the treatment liquid made from seawater containing more impurities than fresh water, compared to the treatment liquid made from fresh water. The auxiliary agent for generating a treatment liquid stored in the auxiliary agent tank 354 is not particularly limited, and any known agent may be used as long as it can help to form a treatment liquid by mixing seawater and an alkaline agent.

In the exhaust gas treatment apparatus 100 having such a configuration, the flow of the cooling liquid or the treatment liquid flows in one direction, and the wastewater is not recovered and recycled.

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 the 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 connected to the reactor 200 by the waste water recovery line LW. It may be connected to the waste water outlet 230 of the. In addition, seawater injected into the reactor 200 and treated with exhaust gas or wastewater that is a treatment liquid may be recovered to the treatment liquid tank 340 through the waste water recovery line LW. Accordingly, the wastewater may be mixed with the treatment liquid of 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, the treatment liquid separation line LV may include a valve V and a pump P. 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 to the treatment liquid tank 340 of the wastewater to obtain a predetermined desired component. If not satisfied, by opening the valve (V) of the treatment liquid separation line (LV) and operating the pump (P), wastewater together with a portion of the treatment liquid through the treatment liquid separation line (LV) through the treatment liquid separation unit 360 can be supplied to

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

The treatment liquid separation unit 360 and the mixing tank 355 of the treatment liquid preparation unit 350 may be connected by a separation treatment liquid supply line LF. Accordingly, the treatment liquid separated from 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, fresh water or seawater used to prepare the treatment liquid, alkali agent, treatment liquid generation auxiliary, and the like.

A separation wastewater and 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 and drainage line LDD. The separate waste water and drainage line (LDD) may be connected to the waste treatment unit. The wastewater from which the treatment liquid is separated, which is drained through the separate wastewater drainage line (LDD), may be purified in a waste water purification unit and then drained 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 the hull 20 and the exhaust gas treatment apparatus 100 described above.

As shown in FIGS. 3 and 4, 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 exhaust device 30 such as a boiler 32. can be In addition, the hull 20 may be provided with a stack 21 and a residence 22 .

The exhaust gas treatment apparatus 100 may be provided in the hull 20 . For example, the exhaust gas treatment apparatus 100 may be provided in the stack 21 of the hull 20 . In addition, the exhaust gas treatment device 100 may be connected to the exhaust gas exhaust device 30 to process the exhaust gas discharged from the exhaust gas exhaust 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 process the exhaust gas discharged from the exhaust gas discharge device 30 . If so, it may be provided in any part of the hull 20 .

Exhaust gas treatment device and ship 2nd 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 similar to FIG. 4 showing a second embodiment of a ship according to the present invention.

Here, the second embodiment of the exhaust gas processing apparatus and the ship according to the present invention is the first embodiment of the exhaust gas processing apparatus and the ship according to the present invention described with reference to FIGS. 1 to 5, and the exhaust gas There is a difference in that wastewater, which is sprayed and used to remove carbon dioxide from exhaust gas, which is a cooling liquid or treatment liquid, is drained, or the wastewater is recovered to separate the treatment liquid from the wastewater.

Accordingly, a waste water drain valve (VD) is provided in the waste water drain line (LD) connected to the waste water drain port 230 of the reactor 200, is connected to the treatment liquid tank 340, and the waste water recovery valve (VW) and waste water recovery The wastewater recovery line LW provided with the pump PW is further connected to the wastewater outlet 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 , and 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, the differentiated configuration will be mainly described, and for the remaining configurations, what has been described with reference to FIGS. 1 to 5 may be referred to.

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 wastewater in the wastewater drain line LD connected to the wastewater drain 230 of the reactor 200 . A wastewater recovery line (LW) provided with a drain 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 drain port (230) have.

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

Then, when the wastewater drain 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 drain port 230 is transferred to the treatment liquid tank through the wastewater recovery line (LW). (340). That is, the reactor 200 may be in a closed loop state in which wastewater that is a cooling liquid or a treatment liquid injected into the inside of the reactor 200 is recovered. As described above, 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 processing apparatus 100 and the ship 10 according to the present invention, as shown in FIG. 6 , the processing 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 processing 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 to be injected into the reactor 200 in the 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.

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, and 331 of the first, second, and third injection units 310, 320, and 330 are all disposed in the treatment liquid tank ( 340) can be connected. For example, as shown in FIG. 6 , the treatment liquid supply line LT provided with the treatment liquid supply pump PT is connected to the treatment liquid tank 340 , and 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, the first, second, and third supply pipes 311 , 321 , and 331 may be provided with first, second, and third processing liquid supply valves VT1 , VT2 and VT3 , respectively.

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

As described above, in an open loop state in which the waste water recovery valve VW is closed and the waste water drain valve VD is opened, the first treatment liquid supply valve VT1 is closed, and the seawater injection supply valve VE and the second and third The treatment liquid supply valves VT2 and VT3 may be opened. In addition, the seawater injection supply pump (PE) and the treatment liquid supply pump (PT) may be operated.

Accordingly, seawater is injected into the exhaust gas as a coolant 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 removed. Through this, the treatment liquid of the treatment liquid tank 340 is injected into the exhaust gas to remove carbon dioxide from the exhaust gas. In this case, both of the second and third treatment liquid supply valves VT2 and VT3 may be opened or only one of the two may be opened depending on the amount of the treatment liquid to be injected.

In addition, in the closed loop state where the wastewater drain 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 are closed. can all be opened. In addition, the treatment liquid supply pump PT and the wastewater recovery pump PW may be operated.

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, 332 of the first, second, and third injection units 310, 320, and 330 to remove carbon dioxide from the exhaust gas. can In this case, all of the first, second, and third treatment liquid supply valves VT1 , VT2 , and VT3 may be opened, only two may be opened, or only one may be opened depending on the amount of the treatment liquid to be sprayed. 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 to control the first injection unit 310 . The seawater may be sprayed through the first 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 switch to a closed loop state in which wastewater is recovered and recycled as necessary, so that chemicals such as alkali agents are used The amount of wastewater can be minimized, and the open-loop state and the closed-loop state can be selectively used depending on the situation, and as wastewater is recycled, the amount of wastewater can be reduced, thereby reducing wastewater treatment costs.

Exhaust gas treatment device and third embodiment of a 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 .

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 similar to FIG. 4 showing a third embodiment of a ship according to the present invention.

Here, the third embodiment of the exhaust gas processing apparatus and the ship according to the present invention is the second embodiment of the exhaust gas processing apparatus and the ship according to the present invention described with reference to FIGS. 6 and 7, and the processing unit ( 300) is different 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, LE3), respectively, of the first, second, and third injection units (310, 320, 330) of the processing 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, the differentiated configuration will be mainly described, and for the remaining configurations, what has been described with reference to FIGS. 1 to 7 may be referred to.

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 includes the first, second, and third seawater injection supply lines ( LE1, LE2, LE3). In addition, the first, second, and third seawater injection supply lines LE1 , LE2 and LE3 may be respectively 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 . In addition, the first, second, and third seawater injection supply lines LE1, LE2, and LE3 may be provided with first, second, and third seawater injection supply valves VE1, VE2, and VE3, respectively.

In this case, as shown in FIG. 8 , the packing PC may also be provided in the inner portion 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 device 100 and the ship 10 according to the present invention having the above configuration, it is necessary to remove sulfur oxides from the exhaust gas by using low sulfur oil as a fuel in the exhaust gas exhaust device 30 . If there is no carbon dioxide, carbon dioxide can be removed from the exhaust gas as follows.

In the open-loop state where the wastewater recovery valve (VW) is closed and the wastewater drain valve (VD) is open, 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 processing liquid supply valves VT2 and VT3 may be opened. In addition, the seawater injection supply pump (PE) and the treatment liquid supply pump (PT) may be operated.

Accordingly, the first injection nozzle 312 of the first injection unit 310 sprays seawater as a coolant to 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 A liquid may 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.

In the closed loop state where the wastewater drain valve (VD) is closed and the wastewater recovery valve (VW) is open, 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 The valves VT1, VT2, VT3 can all be opened. In addition, the treatment liquid supply pump PT and the wastewater recovery pump PW may be operated. Accordingly, all of the first, second, and third injection nozzles 312 , 322 , and 332 of the first, second, and third injection units 310 , 320 , and 330 may inject a treatment liquid into the exhaust gas to remove carbon dioxide from the exhaust gas. 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 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 to the exhaust gas, and the second and third injection nozzles 322 and 332 of the second and third injection units 320 and 330 inject the exhaust gas into the exhaust gas. The 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 addition, 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 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 to 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 may be closed and the wastewater drain valve VD may be opened, so that wastewater may be drained through the wastewater drain 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 using high sulfur oil as a fuel in the exhaust gas exhaust device 30, As shown below, only sulfur oxides can be removed from the exhaust gas, or sulfur oxides and carbon dioxide can be simultaneously removed.

In this case, the waste water recovery valve VW may be closed and the waste water drain valve VD may be in an open open loop state.

In the case of removing only sulfur oxides, 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, in the case of simultaneously removing sulfur oxides and carbon dioxide, in the open loop state, 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 The valves VE1 and VE2 and the third treatment liquid supply valve VT3 may be opened to operate the seawater injection supply pump PE and the treatment liquid supply pump PT. Accordingly, seawater is injected into the exhaust gas in 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, and the third injection of the third injection unit 330 is In the nozzle 332 , the treatment liquid may 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.

In the third embodiment of the exhaust gas processing device 100 and the ship 10 according to the present invention having such a configuration, as one exhaust gas processing device 100 , the low sulfur oil or high sulfur oil in the exhaust gas exhaust device 30 . Depending on whether carbon dioxide is used as a fuel, only carbon dioxide can be removed from exhaust gas, only sulfur oxides can be removed, or both sulfur oxides and carbon dioxide can be removed simultaneously.

Exhaust gas treatment apparatus 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 similar to FIG. 4 showing a fourth embodiment of a ship according to the present invention.

Here, the fourth embodiment of the exhaust gas processing apparatus and the ship according to the present invention is the second embodiment of the exhaust gas processing apparatus according to the present invention described with reference to FIGS. 6 and 7 and the processing unit 300 . Removes at least one of sulfur oxides and carbon dioxide from the exhaust gas, and inside the reactor 200, there is a partition unit 240 that divides the inside of the reactor 200 into a first region RG1 and a second region RG2. The difference is that they are available.

Accordingly, the seawater injection supply line LE is branched into 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 and LE2 are provided with first and second seawater injection supply valves VE1 and VE2, respectively, and the inside of the reactor 200 is placed inside the reactor 200 into the first region RG1 ) and a partition unit 240 partitioning the second area RG2 is provided, the second area RG2 is connected to the second area wastewater drainage line LWA, and the second area wastewater and drainage line LWA is treated A second area wastewater recovery line (LWB) connected to the liquid tank 340 is connected, and the second area wastewater drain valve (VWA) is respectively connected to the second area wastewater discharge line (LWA) and the second area wastewater recovery line (LWB). ) and the second area waste water recovery valve (VWB) are provided.

Therefore, in the following, the differentiated configuration will be mainly described, and for the remaining configurations, what has been described with reference to FIGS. 1 to 7 may be referred to.

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 includes the first and second seawater injection supply lines LE1, LE2) respectively. In addition, the first and second seawater injection supply lines LE1 and LE2 may be respectively connected to the first and second supply pipes 311 and 321 of the first and second injection units 310 and 320 . In addition, the first and second seawater injection supply lines LE1 and LE2 may be provided with first and second seawater injection supply valves VE1 and VE2, respectively.

In this case, the packing (PC) may also be provided in the 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. A partition unit 240 partitioning the second region RG2 may be provided. In the partition unit 240, the exhaust gas flows from the first region RG1 to the second region RG2, but is injected from the third injection unit 330 to the second region RG2 to remove carbon dioxide from the exhaust gas. The wastewater, which is a treatment liquid used in , may be drained or recovered without flowing into the first region RG1.

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

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

In the fourth embodiment of the exhaust gas treatment apparatus 100 and the ship 10 according to the present invention, the second area wastewater and drainage line LWA is connected to the second area RG2, and the second area wastewater drainage line ( LWA) is connected to a second area wastewater recovery line (LWB) connected to the treatment liquid tank 340, and second area wastewater is respectively connected to the second area wastewater discharge line (LWA) and the second area wastewater recovery line (LWB). 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 waste water purification unit. And, the wastewater drained from the second area wastewater drainage line (LWA) is supplied to the waste treatment unit through the second area wastewater discharge line (LWA), purified in the waste water treatment unit, and then 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 configuration, it is necessary to remove sulfur oxides from the exhaust gas by using low sulfur oil as a fuel in the exhaust gas exhaust device 30 . If there is no carbon dioxide, carbon dioxide can be removed from the exhaust gas as follows.

In an open loop state where the wastewater recovery valve VW is closed and the wastewater drain valve VD is open, 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 can be opened. In addition, the second area waste water recovery valve VWB may be closed and the second area waste water drain valve VWA may be opened. In addition, the seawater injection supply pump (PE) and the treatment liquid supply pump (PT) can be operated.

Accordingly, seawater is injected into the exhaust gas as a coolant in 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 may be injected into the exhaust gas to remove carbon dioxide from the exhaust gas. In addition, wastewater, which is seawater or a treatment liquid used to remove carbon dioxide from the exhaust gas, may be drained through the wastewater drainage line LD and the second area wastewater drainage line LWA.

In addition, in the closed loop state where the waste water drain valve (VD) is closed and the waste return valve (VW) is 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 waste water drain valve VWA may be closed and the second area waste water recovery valve VWB may be opened. In addition, the treatment liquid supply pump PT and the wastewater recovery pump PW may be operated.

Accordingly, all of the first, second, and third injection nozzles 312 , 322 , and 332 of the first, second, and third injection units 310 , 320 , and 330 may inject the treatment liquid into the exhaust gas, and carbon dioxide may be removed from the exhaust gas. In addition, wastewater, which is a treatment liquid obtained by removing carbon dioxide 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 also 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 into the exhaust gas as a coolant in 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 may be injected into the exhaust gas to remove carbon dioxide from the exhaust gas. In addition, seawater from which carbon dioxide is removed from the exhaust gas or wastewater that is a treatment liquid may be recovered to the treatment liquid tank 340 through the waste water recovery line LW and the second area waste water recovery line LWB.

In addition, in the closed loop state, the second seawater injection supply valve VE2 and the first and second processing liquid supply valves VT1 and VT2 are closed, and the first seawater injection supply valve VE1 and the third processing 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 as a cooling liquid from the first injection nozzle 312 of the first injection unit 310 , and the processing liquid is supplied to the exhaust gas from the third injection nozzle 332 of the third injection unit 330 . The 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 may be closed and the wastewater drain valve VD may be opened, so that wastewater may be drained through the wastewater drain 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 a fuel in the exhaust gas exhaust device 30, As shown below, only sulfur oxides can be removed from the exhaust gas, or sulfur oxides and carbon dioxide can be simultaneously removed.

In this case, the waste water recovery valve VW may be closed and the waste water drain valve VD may be in an open open loop state.

In the case of 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) are all 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, the wastewater may be drained through the wastewater drainage line LD.

When sulfur oxide and carbon dioxide are simultaneously removed, in the open loop state, the first and second treatment liquid supply valves VT1 and VT2 are closed, and the first and second seawater injection supply valves VE1 and VE2 and the third treatment liquid are supplied. The valve VT3 is openable. In addition, the second area waste water recovery valve VWB may be closed and the second area waste water drain valve VWA may be opened. In addition, the seawater injection supply pump (PE) and the treatment liquid supply pump (PT) can be operated. 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 oxides from the exhaust gas, and the third injection of the third injection unit 330 is The processing liquid may be sprayed onto 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 discharge line LD and the second area wastewater discharge line LWA.

When sulfur oxide and carbon dioxide are simultaneously removed, in the open loop state, the first and second treatment liquid supply valves VT1 and VT2 are closed, and the first and second seawater injection supply valves VE1 and VE2 and the third treatment liquid are supplied. The valve VT3 is openable. In addition, the second area waste water drain valve VWA may be closed and the second area waste water recovery valve VWB may be opened. In addition, the seawater injection supply pump (PE) and the treatment liquid supply pump (PT) can be operated. 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 oxides from the exhaust gas, and the third injection unit 330 is The treatment liquid may be injected into the exhaust gas from the three injection nozzle 332 to remove carbon dioxide 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 processing device 100 and the ship 10 according to the present invention having such a configuration, as one exhaust gas processing device 100 , the low sulfur oil or high sulfur oil in the exhaust gas exhaust device 30 . Depending on whether carbon dioxide is used as fuel, only carbon dioxide is removed from exhaust gas, only sulfur oxides are removed, or sulfur oxides and carbon dioxide can be removed simultaneously, and the inside of the reactor 200 by the partition unit 240 is, for example, the first injection unit ( 310) and a first region RG1 provided with the second injection unit 320 and a second region RG2 provided with a third injection unit 330, at least among sulfur oxides and carbon dioxide from exhaust gas One or more removal efficiencies may be maximized.

As described above, by using the exhaust gas treatment apparatus according to the present invention and a ship including the same, carbon dioxide can be removed from the exhaust gas, and carbon dioxide can be removed from the exhaust gas with a relatively simple configuration.

In the exhaust gas treatment apparatus described above, the configuration of the above-described embodiment is not limitedly applicable, but all or part of each embodiment may be selectively combined so that various modifications may be made. have.

10: ship 20: hull
21: stack 22: residence
30: exhaust gas exhaust 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: waste water outlet
240: partition unit 241: partition 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: third supply pipe 332: third injection nozzle
340: treatment liquid tank 341: treatment liquid component detection sensor
350: treatment liquid production unit 351: seawater tank
352: fresh water tank 353: alkali 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 area wastewater drainage line
LWB: Second area wastewater recovery line LE: Seawater injection supply line
LE1: 1st seawater injection supply line LE2: 2nd seawater injection supply line
LE3: 3rd seawater injection supply line PH: Perforated plate
PC: Packing V: Valve
VD : Waste water drain valve VW : Waste water recovery valve
VWA: Second area wastewater drain valve VWB: Second area wastewater recovery valve
VE: Seawater injection supply valve VE1: 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 treatment 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 (16)

a reactor into which exhaust gas is introduced; and
a first injection unit provided in the reactor and injecting seawater into the exhaust gas flowing into the reactor and flowing upwards of the reactor; and
a second injection unit provided in a portion inside the reactor above the first injection unit and injecting an aqueous alkali solution into the exhaust gas flowing upward through the first injection unit; including,
The seawater injected from the first injection unit treats sulfur oxides from the exhaust gas,
The aqueous alkali solution sprayed from the second injection unit treats carbon dioxide from the exhaust gas,
The wastewater treated with the exhaust gas is drained from the reactor, purified in the waste purification unit, and then discharged to the outside,
The aqueous alkali solution treated with the exhaust gas is drained from the reactor and provided to be circulated,
exhaust gas treatment system. According to claim 1,
a treatment liquid tank storing an aqueous alkali solution and connected to the second injection unit to supply an aqueous alkali solution;
Exhaust gas treatment device further comprising a. delete delete delete According to claim 1,
The reactor includes an exhaust gas inlet through which exhaust gas flows, an exhaust gas outlet through which exhaust gas sequentially treated by seawater and aqueous alkali solution is discharged, and a waste water outlet through which wastewater is drained. delete delete 3. The method of claim 2,
a treatment liquid production unit connected to the treatment liquid tank and supplying an aqueous alkali solution to the treatment liquid tank; Exhaust gas treatment device further comprising a. hull; and
The exhaust gas treatment apparatus according to any one of claims 1, 2, 6, and 9 provided in the hull;
ships containing delete delete delete delete delete delete

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