KR102432774B1 - Linkage system using seawater electrolysis module - Google Patents

Abstract

A linkage system using an electrolysis module of seawater is disclosed. The linkage system using the electrolysis module of seawater according to the present invention uses sodium hydroxide (NaOH), sodium hypochlorite (NaOCl) and hydrogen (H ₂ ) gas generated by electrolysis of seawater to various devices in the ship Thus, energy resources are efficiently used without wasting, and additional power generation facilities are provided to produce electricity using HCNG, which is a mixture of hydrogen gas generated by electrolysis of seawater and BOG generated from an LNG storage tank in a certain ratio, as fuel. Maximize energy efficiency.

Description

Linkage system using seawater electrolysis module}

The present invention relates to a linkage system utilizing an electrolysis module of seawater, and more particularly, sodium hydroxide (NaOH), sodium hypochlorite (NaOCl) and hydrogen (H ₂ ) gas generated by electrolysis of seawater to ship It is about a linkage system using an electrolysis module of seawater that is used in my various devices.

In the case of large ships such as oil tankers, container ships, or LNG cargo ships, a ballast tank is provided inside the ship as a means to secure the stability and balance of the ship. In general, using a pump, the surrounding seawater is introduced into the ballast tank as needed or the seawater in the ballast tank is discharged. In this way, seawater for balancing the ship is called ballast water ) is called That is, when cargo is unloaded, ballast water flows into the ballast tank, and when cargo is loaded, the ballast water stored in the ballast tank is discharged to balance the ship.

As such, the ballast water is used to control the draft of the ship for safe operation of the ship through buoyancy control and for optimal navigation through friction reduction.

The biggest problem with such ballast water is that the ballast water is basically used as a medium to propagate foreign marine species, that is, organisms or pathogens in a specific sea area contained in the ballast water are completely different It is transported to other sea areas, causing side effects that disturb the environment and ecosystem of the sea area.

Therefore, the International Maritime Organization (IMO) has established a new environmental standard to treat ballast water to prevent cross-border movement of harmful species.

As the treatment method of ballast water, filtering method, ultraviolet disinfection method, heating method, chemical treatment method, and electric treatment method are used. .

As a conventional ballast water treatment device using electrolysis, domestic patent application No. 10-2002-36086 (June 26, 2002), "Effluent electrolytic disinfection equipment of sewage treatment plant, domestic patent application No. 10-2005-0085605 (September 14, 2005) ) "Electrolytic Disinfection Apparatus for Ship Ballast Water" and "Ship Ballast Water Sterilization Device Using Bipolar Electrolysis System" of Korean Patent Application No. 10-2006-0113865 (October 14, 2006).

In addition, prior domestic application patents No. 10-0982195 “Balast water treatment system using high-efficiency electrolysis device”, No. 10-09850415 “Electrolysis device for fresh water or seawater” and 10-1063592 “Electricity with negative electrode plate protection member installed” There is a content about the ballast water electrolysis device for more efficient and prevention of foreign matter adhesion in “Decomposer”. And there are also research results on device design to use neutralization device and increase electrical efficiency in No. 10-1309373 “Ballast water treatment device using hybrid electrolysis device”.

In the conventional ballast water treatment method using electrolysis, an oxidizing agent (usually hypochlorous acid) is generated by electrolyzing seawater, and the generated oxidizing agent is mixed with ballast water flowing into the ballast tank from the sea to sterilize the ballast water. will be.

However, in general, these electrolysis facilities generate hydrogen gas with a risk of explosion, which is an additional product corresponding to the production of sodium hypochlorite (NaOCl), an active material that affects the sterilization of marine organisms, so that hydrogen gas is Since there is a risk of explosion if it remains inside, inside the ship, and inside the ballast water tank, it is necessary to discharge it outboard in a safe form.

For this safety problem, hydrogen gas must be diluted to 1% by volume using external air and then discharged to the outside. ) is required, and a large amount of power is consumed to operate this large-capacity blower.

The technical problem to be achieved by the present invention is to utilize sodium hydroxide (NaOH), sodium hypochlorite (NaOCl) and hydrogen (H ₂ ) gas generated by electrolysis of seawater in various devices in the ship to efficiently use energy resources without wasting that you want to use as

In addition, the present invention is to maximize the efficiency by providing an additional power generation facility that produces electricity using HCNG, which is a mixture of hydrogen gas generated by electrolysis of seawater and BOG generated from an LNG storage tank in a certain ratio, as a fuel. do.

In order to achieve the above object, the present invention electrolyzes the seawater supplied from the seawater supply unit to sodium hydroxide (NaOH, Sodium Hydroxide), sodium hypochlorite (NaOCl, Sodium Hypochlorite), and hydrogen (H ₂ ) At least of the gas Electrolysis module 100 to generate one; a second storage tank 120 for storing sodium hypochlorite generated in the electrolysis module 100 and discharging hydrogen gas; and an exhaust gas purification device 200 that receives sodium hypochlorite stored in the second storage tank 120 as an oxidizing agent for desulfurization.

The linkage system using the electrolysis module of seawater according to the present invention further includes; a first storage tank 110 for storing sodium hydroxide generated in the electrolysis module 100 and discharging hydrogen gas; When the amount of sodium hypochlorite supplied as an oxidizing agent for desulfurization to the exhaust gas purification device 200 is insufficient, sodium hydroxide stored in the first storage tank 110 is added to the exhaust gas purification device 200 as an oxidizing agent for desulfurization can supply

Some of the sodium hydroxide stored in the first storage tank 110 may be supplied to a reverse osmosis fresh water system and used to adjust the pH concentration of fresh water.

Some of the sodium hypochlorite stored in the second storage tank 120 may be supplied to the ballast water treatment system and used to kill marine organisms in seawater.

The linkage system using the electrolysis module of seawater according to the present invention reacts the hydrogen gas and nitrogen gas generated in the electrolysis module 100 to generate ammonia (NH ₃ ), which is then used in the exhaust gas purification device ( Further comprising; the ammonia generating unit 300 for supplying 200) as a reducing agent for denitrification, the exhaust gas purifying device 200 includes a scrubber unit 210 for reducing sulfur oxides, and the scrubber unit 210 The SCR catalyst unit 220 is provided downstream of the to reduce nitrogen oxide, and the ammonia supplied from the ammonia generating unit 300 is supplied from the exhaust gas purification device 200 inside the SCR catalyst unit. It can be sprayed on the upstream side of 220 .

The linkage system using the electrolysis module of seawater according to the present invention is an oxidizer storage tank that receives and stores sodium hydroxide stored in the first storage tank 110 or sodium hypochlorite stored in the second storage tank 120 . (130); and an oxidant injection line DL for supplying sodium hydroxide or sodium hypochlorite stored in the oxidant storage tank 130 to the scrubber unit 210 .

The oxidizing agent injection line DL may be joined onto the cleaning liquid supply line WL for supplying the cleaning liquid to the scrubber unit 210 .

The washing water discharged from the exhaust gas purification device 200 is discharged overboard or stored in the oxidant storage tank 130, and then mixed with sodium hydroxide and sodium hypochlorite stored in the oxidant supply tank 130, and then again The oxidizing agent may be circulated and supplied to the scrubber 210 through the injection line DL.

A pump for providing a transport force and a cooler for reducing the temperature of the circulating washing water may be installed on the oxidant injection line DL.

The linkage system using the electrolysis module of seawater according to the present invention is a hydrogen gas generated in the electrolysis module 100 and BOG (Boil-Off Gas) generated in the LNG storage tank provided in the ship in a certain ratio. The power generation facility 400 for generating electric power using the mixed HCNG as a fuel; may further include.

The power generation facility 400 includes: a second mixing chamber 410 for generating HCNG by mixing the hydrogen gas generated in the electrolysis module 100 and BOG generated in the LNG storage tank at a constant ratio; a combustion chamber 420 for receiving and burning HCNG from the second mixing chamber 410; a gas turbine unit 430 that generates power by receiving the high-pressure gas generated in the combustion chamber 420; and a steam turbine unit 440 that receives the steam generated in the combustion chamber 420 to generate electricity.

The high-temperature exhaust gas discharged from at least one of the gas turbine 430 and the steam turbine 440 may be supplied to the downstream side of the scrubber unit 210 inside the exhaust gas purification device 200 .

A linkage system using an electrolysis module of seawater according to another aspect of the present invention is to discharge at least one of sodium hydroxide (NaOH) and sodium hypochlorite (NaOCl) generated by electrolysis of seawater from the combustion engine of the ship. The exhaust gas purification device 200 for purifying exhaust gas is supplied as an oxidizing agent for desulfurization, and hydrogen gas generated by electrolysis of seawater is reacted with nitrogen gas to generate ammonia, and then ammonia is used in the exhaust gas purification device ( 200) as a reducing agent for denitrification.

Some of the hydrogen gas generated by the electrolysis of seawater is mixed with BOG (Boil-Off Gas) generated in an LNG storage tank provided on a ship in a certain ratio to generate HCNG, and power is generated by the combustion of the HCNG. characterized by production.

The exhaust gas purification device 200 includes a scrubber unit 210 for reducing sulfur oxides in exhaust gas, and an SCR catalyst unit 220 provided downstream of the scrubber unit 210 to reduce nitrogen oxides. and the low-temperature exhaust gas that has passed through the scrubber unit 210 is mixed with the high-temperature exhaust gas generated by the combustion of the HCNG before being introduced into the SCR catalyst unit 220. .

According to the present invention, sodium hydroxide (NaOH), sodium hypochlorite (NaOCl) and hydrogen (H ₂ ) gases generated in the process of electrolyzing seawater for the treatment of ballast water are utilized in various devices in the ship to save energy resources. It can be used efficiently without wasting.

Since the present invention utilizes a by-product generated by the electrolysis of seawater as an oxidizer and a reducing agent of the exhaust gas purification device, there is no need to provide a separate oxidizing agent storage tank or a reducing agent storage tank, so the space utilization in the ship increases.

In addition, the present invention maximizes energy use efficiency by mixing a certain amount of hydrogen gas generated by electrolysis of seawater with BOG generated in an LNG storage tank and using it as HCNG fuel without discharging it to the outside air as in the prior art. .

In addition, since the high-temperature exhaust gas discharged from the power generation facility using HCNG as fuel hardly contains sulfur oxides, it is mixed with the low-temperature exhaust gas that has passed through the scrubber part in the exhaust gas purification device, and the SCR catalyst part that proceeds thereafter It is possible to increase the catalytic reaction efficiency in

1 is a view showing a linkage system utilizing an electrolysis module of seawater according to the present invention.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings. Like reference numerals in each figure indicate like elements.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the following examples may be modified in various other forms, and the scope of the present invention is not limited to the following examples.

1 is a view showing a linkage system utilizing an electrolysis module of seawater according to the present invention.

Referring to Figure 1, the linkage system using the electrolysis module of seawater according to the present invention, by electrolyzing the seawater supplied from the seawater supply unit, sodium hydroxide (NaOH, Sodium Hydroxide), sodium hypochlorite (NaOCl, Sodium Hypochlorite) , And hydrogen (H ₂ ) Electrolysis module 100 for generating gas; a first storage tank 110 for storing sodium hydroxide generated in the electrolysis module 100 and discharging hydrogen gas; a second storage tank 120 for storing sodium hypochlorite generated in the electrolysis module 100 and discharging hydrogen gas; and an exhaust gas purification device 200 that receives sodium hydroxide and sodium hypochlorite generated in the electrolysis module 100 as an oxidizing agent for desulfurization.

The electrolysis module 100 is supplied with seawater taken from the outside, such as a sea chest, and electrolyzed. On the seawater supply line SL for supplying seawater to the electrolysis module 100, a seawater pump 11 for providing seawater transport power, and a filter 12 for primarily removing foreign substances in seawater ) can be installed.

The electrolysis module 100 consists of a negative electrode plate and a positive electrode plate, and sodium hydroxide (NaOh, Sodium Hydroxide), sodium hypochlorite (NaOCl, Sodium Hypochlorite) from seawater using electricity supplied from a transformer / rectifier (20, Transformer / Rectifier) ) and hydrogen (H ₂ ) gas.

Looking at the reaction in the electrolysis module 100 is as follows.

[Anode reaction] 2Cl ^- → Cl ₂ + 2e ^-

[Cathode reaction] 2H ₂ O + 2Na ⁺ + 2e ^- → 2NaOH + H ₂

[Total reaction] 2NaCl + H ₂ O → NaOCl + NaCl + H ₂

Sodium hydroxide and sodium hypochlorite generated in the electrolysis module 100 are stored in the first storage tank 110 and the second storage tank 120, respectively, and the hydrogen gas is stored in the first storage tank 110 and the second storage tank. After being introduced into the tank 120 , it may be discharged through the hydrogen discharge line HL provided in each of the first storage tank 110 and the second storage tank 120 .

Sodium hydroxide stored in the first storage tank 110 may be supplied to and used by various consumers in the ship. For example, it may be supplied to a Reverse Osmosis Type Fresh Water Generating System and used to adjust the pH concentration of fresh water.

Sodium hypochlorite stored in the second storage tank 120 may also be supplied to and used by various consumers in the ship. For example, it may be supplied to a marine growth prevention system or a ballast water treatment system and used to kill marine organisms in seawater.

The above-mentioned example is only one of various embodiments to which the present invention can be applied, and the sodium hydroxide stored in the first storage tank 110 and the sodium hypochlorite stored in the second storage tank 120 are required within the vessel. It can be supplied to various devices.

In addition, sodium hydroxide and / or sodium hypochlorite is not supplied to only one specific device, but may be distributed and supplied to various consumers through the oxidizing agent transfer line (TL) to be described below.

An object of the present invention is to provide a system associated with an exhaust gas purification device 200 for purifying exhaust gas discharged from a combustion engine of a ship as a preferable utilization method of a by-product generated by electrolysis of seawater.

The exhaust gas purification apparatus 200 of this embodiment includes a scrubber unit 210 for reducing sulfur oxides (SOx) and a Selective Catalytic Reduction (SCR) catalyst unit 220 for reducing nitrogen oxides (NOx) integrally. can be provided.

The scrubber unit 210 not only removes sulfur oxides contained in the exhaust gas by spraying washing water into the exhaust gas, but also separates particulate matter such as dust components in the exhaust gas. The washing water used at this time may be seawater, and may be sprayed into the scrubber unit 210 through the washing water supply line WL branched from the seawater supply line SL as shown in FIG. 1 .

The SCR catalyst unit 220 is provided on the downstream side of the scrubber unit 210 and removes nitrogen oxides in the exhaust gas by a selective catalytic reduction method. Specifically, by spraying ammonia into the exhaust gas containing nitrogen oxides and contacting them with a catalyst using Al ₂ O ₃ , TiO ₂ as a carrier or an iron oxide-based or alloy catalyst that does not use a carrier under 200 to 400 ℃, nitrogen oxide is reduced to N It is a method of reducing with ₂ and H ₂ O.

Exhaust gas discharged from the combustion engine of the ship flows into the lower part of the exhaust gas purification device 200 and is purified while sequentially passing through the scrubber unit 210 and the SCR catalyst unit 220 , and then the exhaust gas purification device 200 . It is discharged to the outside through the outlet provided on the upper part of the

The exhaust gas purification device 200 may receive any one of sodium hydroxide and sodium hypochlorite stored in the first storage tank 110 and the second storage tank 120, respectively, as an oxidizing agent for desulfurization.

Specifically, sodium hydroxide stored in the first storage tank 110 and/or sodium hypochlorite stored in the second storage tank 120 is transferred to and stored in the oxidizer storage tank 130 through the oxidant transfer line TL. Thereafter, the oxidizing agent may be supplied to the scrubber unit 210 of the exhaust gas purification apparatus 200 along the injection line DL. Pumps p1, p2, and p3 for providing a transport force, respectively, may be installed on the oxidant transport line TL and the oxidizer injection line DL.

The oxidizing agent injection line DL may be provided to merge onto the washing water supply line WL to which seawater is supplied, as shown in FIG. 1 , or may be provided to be directly connected to the scrubber unit 210 .

The oxidizing agent storage tank 130 stores the oxidizing agent (sodium hydroxide and / or sodium hypochlorite) to be supplied to the scrubber unit 210, and at the same time, serves to temporarily store the washing water discharged from the exhaust gas purification device 200 .

On the other hand, in this embodiment, sodium hypochlorite is mainly supplied as an oxidizing agent, and sodium hydroxide is extracted from the negative electrode only when the amount of sodium hypochlorite supplied as an oxidizing agent is insufficient, such as when supplementation is necessary. Can be used.

The washing water discharged from the exhaust gas purification device 200 is discharged overboard or transferred to the oxidizer storage tank 130 and mixed with the oxidizer (sodium hydroxide and / or sodium hypochlorite) stored in the oxidizer storage tank 130 Afterwards, it may be circulated and supplied to the scrubber unit 210 again. A cooler 230 (Cooler) for reducing the temperature of the circulating washing water may be installed on the oxidizing agent injection line DL.

The sludge or particulate matter contained in the washing water discharged to the oxidizing agent storage tank 130 may be discharged after separation.

In addition, the present invention reacts the hydrogen gas and nitrogen gas discharged from the first storage tank 110 and/or the second storage tank 120 to generate ammonia (NH ₃ ), and it is an exhaust gas purification device ( It may further include an ammonia generating unit 300 that supplies the 200) as a reducing agent for denitrification.

The ammonia generating unit 300 includes a first mixing chamber 310 for mixing hydrogen gas and nitrogen gas, and a reactor 320 for generating ammonia by reacting the mixed gas with an Fe-based catalyst at high temperature and high pressure. can be

The first mixing chamber 310 mixes hydrogen gas and nitrogen gas supplied through the hydrogen discharge line HL in a gaseous state. At this time, the nitrogen gas used may be prepared by using nitrogen in the air.

The reactor 320 generates ammonia by heating hydrogen gas and nitrogen gas in a mixed state to a high temperature. Ammonia generated in the reactor 320 is transferred to and stored in the reducing agent storage tank 330 .

Ammonia stored in the reducing agent storage tank 330 may be injected into the exhaust gas purification device 200 through the reducing agent supply device 340 . At this time, since the ammonia injected by the reducing agent supply device 340 is for removing nitrogen oxides in the exhaust gas, it is preferable that the ammonia is injected upstream of the SCR catalyst unit 220 .

As described above, in the present invention, sodium hydroxide and sodium hypochlorite generated in the electrolysis module 100 are supplied to the exhaust gas purification device 200 as an oxidizer for desulfurization, and the hydrogen gas generated in the electrolysis module 100 is After reacting with nitrogen gas to generate ammonia, it can be said that it is supplied as a reducing agent for denitrification to the exhaust gas purification apparatus 200 .

On the other hand, the present invention may further include a power generation facility 400 capable of producing additional electric power using the hydrogen gas generated in the electrolysis module 100;

When the present invention is applied to an LNG propulsion ship or an LNG carrier, BOG (Boil Off Gas) is generated in the LNG storage tank during the operation of the ship, and it is mixed with the hydrogen gas generated in the electrolysis module 100 to create a new energy source. will be used as

Gas in which a certain amount of hydrogen is mixed with natural gas is called HCNG. HCNG greatly increases combustion stability and noting stability due to the combustion promoting properties of hydrogen. This is advantageous for lean burn.

Therefore, the use of HCNG as a fuel supplied to the engine of a ship increases engine efficiency due to stable lean combustion, almost no emission of sulfur oxides, nitrogen oxides, etc. as the combustion temperature decreases, and the carbon ratio of the fuel itself decreases. As a result, carbon dioxide emissions are reduced.

In this embodiment, the power generation facility 400 includes a second mixing chamber 410 that mixes BOG generated in the LNG storage tank and hydrogen gas generated in the electrolysis module 100 at a constant ratio, and burns the mixed gas. and a combustion chamber 420 .

The power generation facility 400 for generating electric power using the high-pressure gas burned in the combustion chamber 420 may be largely composed of a gas turbine unit 430 and a steam turbine unit 440 .

The gas turbine unit 430 includes a compressor 431 , a gas turbine 432 , and a gas turbine generator 433 .

The air compressed by the compressor 431 is supplied to the combustion chamber 420 , and the high-pressure air and HCNG supplied from the second mixing chamber 410 are combusted in the combustion chamber 420 to the gas turbine 432 . High pressure gas is supplied. A rotational force is generated by the operation of the gas turbine 432 supplied with the high-pressure gas, and the gas turbine generator 433 generates electricity using the rotational force of the gas turbine 432 .

At this time, the high-temperature exhaust gas discharged from the gas turbine 432 may be supplied from the exhaust gas purification device 200 to the downstream side of the scrubber unit 210 .

Since the temperature of the exhaust gas flowing into the lower part of the exhaust gas purification device 200 decreases while passing through the scrubber unit 210 , the catalytic reaction efficiency may decrease in the SCR catalyst unit 220 , and thus the exhaust gas is discharged from the gas turbine 432 . It is configured so that the catalytic reaction efficiency in the SCR catalyst unit 220 can be increased by mixing the high-temperature exhaust gas with the low-temperature exhaust gas that has passed through the scrubber unit 210 .

Since the gas turbine 432 uses HCNG as a fuel, almost no sulfur oxides are contained in the exhaust gas, so it can be configured to be supplied to the downstream side of the scrubber unit 210 without going through the scrubber unit 210 as described above. will be.

The steam turbine unit 440 includes a steam turbine 441 , a steam turbine generator 442 , and a condenser 443 .

The steam turbine 441 is operated by receiving the steam produced in the combustion process of the combustion chamber 420 , and the steam turbine generator 442 receives the rotational force generated by the operation of the steam turbine 441 to generate electricity. The steam discharged from the steam turbine 441 may be condensed through the condenser 443 , converted into water, and then supplied back to the combustion chamber 420 to complete the Rankine cycle.

Although it is illustrated in FIG. 1 that the exhaust gas discharged from the gas turbine 432 is supplied from the exhaust gas purification device 200 to the downstream side of the scrubber unit 210 , the exhaust gas discharged from the steam turbine 441 also contains sulfuric acid. Since the cargo is hardly included, it is also possible to supply the exhaust gas discharged from the steam turbine 441 to the exhaust gas purification device 200 on the downstream side of the scrubber unit 210 .

That is, the high-temperature exhaust gas from at least one of the gas turbine 432 and the steam turbine 441 may be mixed with the low-temperature exhaust gas that has passed through the scrubber unit 210 .

Although the above has been described focusing on specific embodiments of the present invention, various modifications, changes or modifications may be made in the art within the spirit of the present invention and the appended claims, and therefore the foregoing description and drawings are It should be construed as illustrative of the present invention rather than limiting the technical spirit of the invention.

100: electrolysis module 110: first storage tank
120: second storage tank 130: oxidizing agent storage tank
200: exhaust gas purification device 210: scrubber unit
220: SCR catalyst unit 230: cooler
300: ammonia generating unit 310: first mixing chamber
320: reactor 330: reducing agent storage tank
340: reducing agent supply device
400: power generation equipment
410: second mixing chamber 420: combustion chamber
430: gas turbine unit 431: compressor
432: gas turbine 433: gas turbine generator
440: steam turbine 441: steam turbine
442: steam turbine generator 443: condenser
SL: Seawater supply line HL: Hydrogen discharge line
WL: Washing water supply line TL: Oxidizer transfer line
DL : Oxidizing agent injection line

Claims (15)

Electrolysis module 100 for generating at least one of sodium hydroxide (NaOH, Sodium Hydroxide), sodium hypochlorite (NaOCl, Sodium Hypochlorite), and hydrogen (H ₂ ) gas by electrolyzing the seawater supplied from the seawater supply unit;
a first storage tank 110 for storing sodium hydroxide generated in the electrolysis module 100 and discharging hydrogen gas;
a second storage tank 120 for storing sodium hypochlorite generated in the electrolysis module 100 and discharging hydrogen gas;
It includes a scrubber unit 210 that reduces sulfur oxides, and uses at least one of sodium hydroxide stored in the first storage tank 110 and sodium hypochlorite stored in the second storage tank 120 as an oxidizing agent for desulfurization. Exhaust gas purification device 200 to be supplied;
an oxidant storage tank 130 for receiving and storing sodium hydroxide stored in the first storage tank 110 or sodium hypochlorite stored in the second storage tank 120; and
and an oxidant injection line (DL) for supplying sodium hydroxide or sodium hypochlorite stored in the oxidizer storage tank 130 to the scrubber unit 210,
The washing water discharged from the exhaust gas purification device 200 is discharged overboard, or is stored in the oxidizer storage tank 130 and then is mixed with sodium hydroxide and sodium hypochlorite stored in the oxidizer storage tank 130, and then again It is circulated and supplied to the scrubber unit 210 through the oxidant injection line DL,
A pump for providing a conveying force and a cooler for reducing the temperature of the circulating washing water are installed on the oxidizing agent injection line (DL),
Linkage system using seawater electrolysis module.
The method according to claim 1,
When the amount of sodium hypochlorite supplied as an oxidizing agent for desulfurization to the exhaust gas purification device 200 is insufficient, the sodium hydroxide stored in the first storage tank 110 is transferred to the exhaust gas purification device 200 as an oxidizing agent for desulfurization. characterized in that additional supply,
Linkage system using seawater electrolysis module.
3. The method according to claim 2,
Part of the sodium hydroxide stored in the first storage tank 110 is supplied to a reverse osmosis fresh water system, characterized in that it is used to adjust the pH concentration of fresh water,
Linkage system using seawater electrolysis module.
The method according to claim 1,
Part of the sodium hypochlorite stored in the second storage tank 120 is supplied to the ballast water treatment system, characterized in that it is used to kill marine organisms in seawater,
Linkage system using seawater electrolysis module.
The method according to claim 1,
Ammonia generating unit 300 for generating ammonia (NH ₃ ) by reacting hydrogen gas and nitrogen gas generated in the electrolysis module 100 and supplying the generated ammonia as a reducing agent for denitrification to the exhaust gas purifying device 200 . ); further including;
The exhaust gas purification apparatus 200 is provided downstream of the scrubber unit 210 and further includes an SCR catalyst unit 220 for reducing nitrogen oxide, the scrubber unit 210 and the SCR catalyst unit ( 220) is provided integrally,
Ammonia supplied from the ammonia generating unit 300 is injected into the upstream side of the SCR catalyst unit 220 inside the exhaust gas purification device 200,
Linkage system using seawater electrolysis module.
delete The method according to claim 1,
The oxidizing agent injection line (DL) is characterized in that it joins onto the cleaning liquid supply line (WL) for supplying the cleaning liquid to the scrubber unit (210),
Linkage system using seawater electrolysis module.
delete delete The method according to claim 1,
A power generation facility 400 for generating electricity using HCNG, which is a mixture of hydrogen gas generated in the electrolysis module 100 and BOG (Boil-Off Gas) generated in an LNG storage tank provided in a ship in a certain ratio, as a fuel ); further comprising
Linkage system using seawater electrolysis module.
11. The method of claim 10,
The power generation facility 400 is
a second mixing chamber 410 for generating HCNG by mixing the hydrogen gas generated in the electrolysis module 100 and the BOG generated in the LNG storage tank at a constant ratio;
a combustion chamber 420 for receiving and burning HCNG from the second mixing chamber 410;
a gas turbine unit 430 that generates power by receiving the high-pressure gas generated in the combustion chamber 420; and
A steam turbine unit 440 that generates power by receiving the steam generated in the combustion chamber 420;
Linkage system using seawater electrolysis module.
12. The method of claim 11,
Supplying high-temperature exhaust gas discharged from at least one of the gas turbine unit 430 and the steam turbine unit 440 to the downstream side of the scrubber unit 210 inside the exhaust gas purification device 200 . characterized by,
Linkage system using seawater electrolysis module.
At least one of sodium hydroxide (NaOH) and sodium hypochlorite (NaOCl) generated by electrolysis of seawater is supplied as an oxidizing agent for desulfurization to the exhaust gas purification device 200 that purifies the exhaust gas discharged from the combustion engine of the ship ,
Hydrogen gas generated by electrolysis of seawater reacts with nitrogen gas to produce ammonia, and then supplies the generated ammonia as a reducing agent for denitration to the exhaust gas purifier 200,
Some of the hydrogen gas generated by the electrolysis of seawater is mixed with BOG (Boil-Off Gas) generated in an LNG storage tank provided on a ship in a certain ratio to generate HCNG, and electricity is produced by the combustion of the HCNG. and
The exhaust gas purification device 200 includes a scrubber unit 210 for reducing sulfur oxides in exhaust gas, and an SCR catalyst unit 220 provided downstream of the scrubber unit 210 to reduce nitrogen oxides. prepared,
characterized in that the low-temperature exhaust gas that has passed through the scrubber unit 210 is mixed with the high-temperature exhaust gas generated by the combustion of the HCNG before flowing into the SCR catalyst unit 220,
Linkage system using seawater electrolysis module. delete delete

Images