KR20140075204A - Exhaust gas scrubber sea water pump development - Google Patents

Exhaust gas scrubber sea water pump development Download PDF

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Publication number
KR20140075204A
KR20140075204A KR1020120143324A KR20120143324A KR20140075204A KR 20140075204 A KR20140075204 A KR 20140075204A KR 1020120143324 A KR1020120143324 A KR 1020120143324A KR 20120143324 A KR20120143324 A KR 20120143324A KR 20140075204 A KR20140075204 A KR 20140075204A
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KR
South Korea
Prior art keywords
seawater
scrubber
ship
pump
exhaust gas
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KR1020120143324A
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Korean (ko)
Inventor
구경모
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현대중공업 주식회사
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Priority to KR1020120143324A priority Critical patent/KR20140075204A/en
Publication of KR20140075204A publication Critical patent/KR20140075204A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B13/00—Conduits for emptying or ballasting; Self-bailing equipment; Scuppers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/32—Arrangements of propulsion power-unit exhaust uptakes; Funnels peculiar to vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/04—Sulfur or sulfur oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/02—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for marine vessels or naval applications

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treating Waste Gases (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

The present invention relates to a seawater supply apparatus for removing sulfur oxide in ship exhaust gas, and an object thereof is to provide a seawater supply apparatus for removing sulfur oxide in ship exhaust gas that is capable of supplying seawater for removing sulfur oxide to a seawater scrubber, which is connected to a main engine and a generator engine, without widening a space of a ship system. The seawater supply apparatus of the present invention for removing sulfur oxide in ship exhaust gas by using seawater includes a first scrubber (10) into which exhaust gas (G1) discharged from the main engine of the ship flows to be purified by seawater for cleaning; a second scrubber (20) that cleans exhaust gas (G2) discharged from the generator engine of the ship by using seawater for cleaning; a ballast pump (40) that supplies seawater for cleaning to the first scrubber (10) through a seawater supply line (31) and supplies seawater to a ballast tank (B) of the ship; an auxiliary seawater pump (50) that supplies seawater for cleaning to the second scrubber (20); a scrubber tank (60) where contaminated seawater discharged from the first and second scrubbers (10 and 20) is collected; a circulating treatment unit (70) that treats, circulates, and purifies the contaminated seawater in the scrubber tank (60); and a coolant pump (80) that supplies seawater for dilution to the contaminated seawater discharged from the first and second scrubbers (10 and 20), discharges the used seawater out of the ship through a seawater discharge line (32), and supplies an engine coolant (C) for the ship.

Description

[0001] The present invention relates to an exhaust gas scrubber,

The present invention relates to an apparatus for removing sulfur oxides in a ship exhaust gas using a ballast pump, and more particularly, to a ballast pump for supplying seawater to a desulfurization unit in a ship by a ballast pump and supplying dilution seawater to seawater discharged from the desulfurization unit And more particularly, to a sulfur oxide removing apparatus in a ship exhaust gas.

The issue of reducing sulfur dioxide emissions from ships has become more sophisticated, attracting the attention of people around the world, and international legislation on it has become more rigorous and complete.

Particularly, since sulfur oxides (SOx) emitted from ships' main engine and generator engine are defined as 0.1% or less when operated and docked in SECA (Europe) / CARB (US) A method of using a low-sulfur fuel oil having a sulfur content of less than 0.1% and a method of removing sulfur oxides in the exhaust gas by installing a sulfur oxide removing device on a ship using low-cost sulfur fuel oil have.

The marine transportation industry, which maintains a modern global economy, has a large number of ships equipped with fuel oil engines. For this reason, if emission reduction of oxidesulfides is all realized by use of low sulfur fuel, the economic cost of maritime transportation industry can be greatly increased. Accordingly, there is a need to provide an economical and practical fuel gas desulfurization (FGD) process for ships.

FGD technologies used in ships with gas temperatures of between 200 and 490 degrees Celsius and in voyages across multiple waters are more economical than FGD technologies used in land-based coal-fired industrial plants Due to the problem, we should pay more attention to the practicality of the technologies. That is, the total cost of the fuel gas desulfurization equipment of the ship including the manufacturing cost and the operating cost must be less than the total cost saved by replacing with the low sulfur fuel.

Therefore, shortly after the IMO (International Maritime Organization) submitted the vessel's desulfurization regulations in 2005, it became aware of the potential economic benefits of seawater FGD technologies. A joint study conducted by four internationally renowned universities in 2007 made clear that the expectation was that people would attempt to realize long-term reductions in the emission of sulfur dioxide from marine resources, that is, ships using seawater, but could not be realized.

The Massachusetts Institute of Technology in the United States, the University of Tokyo in Japan, the Chalmers University of Technology in Sweden, and the Swiss Federal Institute of Technology in Switzerland. (ISBN: 978-91-976534-1-1) called "Reduction of SOx Emitted to the Waste Gas of a Ship by Seawater Cleaning" of the four university fund associations of "Technology Zurich" With respect to the reduction of sulfur oxides, seawater cleaning is a promising technology. ... ... It is necessary to further study the detailed examples. ... ... It is pointed out that we can confirm after further study ".

BACKGROUND ART Conventional techniques for reducing pollution of a fuel gas from a ship by a seawater washing method include a selective catalytic reduction (SCR) method, a selective non-catalytic reduction (SNCR) method for removing nitrogen oxides ) Method, a nitrogen oxide filter, a storage and reduction (SR) method, and the like can be used.

Also, in order to remove sulfur oxides, adsorption removal methods using metal oxides, contact hydrogenation removal methods, biological removal methods, and seawater scrubber may be used.

Such a nitrogen oxide removing device and a sulfur oxide removing device can be applied to an exhaust gas pipe arranged in a casing and a funnel of a ship.

However, there is a problem in that it is difficult to simultaneously install the nitrogen oxide removal device and the sulfur oxide removal device because the size of the casing and the funnel is limited.

In addition, when the nitrogen oxide removing device and the sulfur oxide removing device are simultaneously installed in each of the exhaust pipes extending from a plurality of engines, the volume becomes so large that it is difficult to remove both the nitrogen oxide and the sulfur oxide contained in the exhaust gas have.

In the case of the apparatus for removing sulfur oxides using the seawater scrubber, a facility for supplying seawater to the seawater scrubber is installed in the engine room of the ship. However, the volume of the seawater pump for supplying seawater to the seawater scrubber is large, It is difficult to install a sulfur oxide removal apparatus using a seawater scrubber in a conventional vessel because it is difficult to install in an engine room of a conventional vessel.

In addition, in order to install a sulfur oxide removal system using a seawater scrubber, it is necessary to increase the engine room area of a newly designed ship, thereby reducing the capacity of the bunker tanks or cargo tanks, And the entire ship design has to be renewed.

Published Patent Publication No. 10 ?? 2011 ?? 0030584 (Mar 23, 2011) Published Patent Publication No. 10 ?? 2010 ?? 0137220 (2010. 30) Published Patent Publication No. 10 ?? 2009 ?? 0075674 (2009.07.08)

It is an object of the present invention to provide a method and an apparatus for removing sulfur oxides in a seawater scrubber connected to an exhaust pipe of a main engine and a generator engine using an existing ballast pump without increasing the space of a ship engine room for further installing a pump for supplying seawater So as to be able to supply seawater for removal.

A second scrubber for purifying the exhaust gas discharged from the generator engine of the ship by means of seawater for washing, a second scrubber for purifying the exhaust gas discharged from the main engine of the ship by the seawater for washing, A ballast pump for supplying seawater to the ballast tank of the ship, a seawater supply pump for supplying seawater for washing to the second scrubber section, and a seawater supply pump for supplying seawater to the ballast tank of the ship, A sludge tank in which sludge accumulated in the scrubber tank is stored; and a seawater desalination unit that is provided in the scrubbing tank to remove contaminated seawater from the scrubber tank, And then diluted in the seawater discharge line, then discharged to the outside of the ship, and the engine cooling water of the ship is discharged And a cooling water pump for supplying the cooling water.

In addition, the ballast pump and the cooling water pump are controlled by a VFD (Variable Frequency Drive) so that the flow rate of the ballast pump and the cooling water pump is controlled according to changes in load of the main engine and the generator engine.

In the present invention, seawater for removing sulfur oxides in the exhaust gas of the ship main engine and the generator engine is supplied to the seawater scrubber by a ballast pump installed in the conventional ship, and a seawater pump for supplying seawater into the scrubber is omitted Therefore, it is possible not only to improve the space utilization in the engine room of the ship, but also to secure the space of the seawater pump occupying a large volume, so that the shape and structure of the existing ship can be maintained.

In addition, since the shape and structure of the existing ship can be maintained as it is, there is no need to design work according to the ship structure change, and the bunker tanks and cargo generated by the change of the hull structure due to the installation of the seawater pump, The capacity reduction of the tank can be prevented.

In addition, since the present invention can provide a sulfur oxide removal device in the exhaust gas without increasing the engine room of a ship, it is possible to reduce the drying cost of the ship and reduce the fuel consumption during navigation, and is also applicable to a conventional ship.

Further, the present invention not only enables the supply of seawater to remove sulfur oxides even in a limited space of the engine room, but also can treat sulfur oxides in the exhaust gas discharged from the ship main engine and the generator engine, thereby preventing air pollution .

Further, according to the present invention, the contaminated seawater is purified while continuously circulating the polluted seawater by the circulating and purifying unit, so that the pollution degree of the contaminated seawater discharged to the outside can be reduced.

In addition, according to the present invention, contaminated seawater is diluted by mixing uncontaminated seawater with the polluted seawater treated by the circulating and purifying section, and then discharged to the outside, so that pollution caused by contaminated seawater can be minimized.

In addition, since the seawater discharge line is connected to the ballast pump by the first connection line, it is possible to supply a large amount of seawater to dilute the contaminated seawater by the cooling water pump and the ballast pump, It is possible to improve the processing ability and so on.

1 is an illustration showing a configuration according to the present invention;

FIG. 1 is a view showing an example of a structure according to the present invention. FIG. 1 is a perspective view of a first scrubber 10 for purifying exhaust gas G1 discharged from a main engine of a ship, A second scrubber 20 for purifying the exhaust gas G2 discharged from the generator engine of the ship by the cleansing seawater and a second scrubber 20 for supplying the seawater to the first scrubber 10 through the seawater supply line 31, A ballast pump 40 for supplying seawater to the ballast tank B of the first and second scrubbers 10 and 20, an auxiliary seawater pump 50 for supplying seawater for washing to the second scrubber 20, A circulation processing unit 70 for treating and circulating the polluted seawater in the scrubber tank 60 to purify the seawater discharged from the scrubber tank 60, And diluted in the seawater discharge line 32, And a cooling water pump 80 for discharging the engine cooling water C to the outside and supplying the engine cooling water C of the ship.

The first scrubber 10 has a function of separating the sulfur dioxide gas (SOx) contained in the exhaust gas G1 of the main engine and the dust component by seawater, and the main engine exhaust gas G1 is introduced And the washing seawater W1 supplied from the ballast pump 40 flows into the other side to be brought into contact with the exhaust gas in the first scrubber 10 and is desulfurized and removed from the exhaust gas by the contact between the exhaust gas and the washing seawater. The dust is removed, and the contaminated seawater W2 containing sulfur oxides is transferred to the scrubber tank 60.

That is, the cleansing seawater W1 supplied into the first scrubber 10 is injected in the form of fine particles to absorb contaminants in the exhaust gas. In this process, sulfur oxide in the engine exhaust gas G1 is removed, Contaminated seawater will be generated.

The ballast pump 40 supplies seawater into the ballast tank B for ballasting of the ship and simultaneously supplies the seawater to the first scrubber 10 for the purpose of cleansing seawater The seawater supplied to the scrubber is referred to as 'washing seawater'. The seawater is supplied to the ballast tank B when the ballast is ballasted, and the seawater is supplied to the first scrubber 10 when the ballast is not used. And supplies the seawater W1.

The ballast pump 40 is connected to the first scrubber 10 by a seawater supply line 31. The seawater supply line 31 is connected to the first scrubber 10 and the first scrubber 10, And an auxiliary pump 11 for supplying the washing seawater into the washing machine.

The second scrubber 20 has a function of separating the sulfur dioxide gas (SOx) contained in the exhaust gas G2 of the ship generator engine and the dust component by seawater. The exhaust gas G2 of the generator engine And the washing seawater W1 supplied from the auxiliary seawater pump 50 flows into the other side to be in contact with the exhaust gas in the second scrubber 20. When the exhaust gas is in contact with the washing seawater, And the contaminated seawater containing sulfur oxides is transferred to the scrubber tank 60. In this way,

That is, the washing seawater W1 supplied into the second scrubber 20 is sprayed in the form of fine particles to absorb contaminants in the exhaust gas. In this process, sulfur oxide in the generator engine exhaust gas G2 is removed , And contaminated seawater is generated.

The auxiliary seawater pump 50 is adapted to supply the washing seawater into the second scrubber 20 through the seawater auxiliary line 33. Since the auxiliary seawater pump 50 is small in size, The space occupied by the space is not large and can be installed separately in the engine room.

The seawater auxiliary line 33 is connected to the seawater supply line 31 by the second connection line 35 and is connected to the second scrubber 20 through the seawater auxiliary line 33 by the ballast pump 40. [ And the connection with the auxiliary seawater pump 50 may be omitted when constructed as described above.

The seawater auxiliary line 33 is further provided with another auxiliary pump 21 for washing the second scrubber 20 and supplying the washing seawater into the second scrubber.

The scrubber tank 60 collects polluted seawater W2 discharged from the first and second scrubbers 10 and 20 and is connected to a first scrubber discharge line 36 and a second scrubber discharge line 37, A circulation processing unit 70 is connected and a seawater discharge line 32 is connected.

The circulation processing unit 70 circulates and purifies the polluted seawater W2 flowing into the scrubber tank 60 and includes a return pump 71 for circulating polluted seawater in the scrubber tank 60, A circulation line 73 for supplying the seawater W2a purified through the treatment section 72 into the scrubber tank 60; And a sludge tank 74 connected to the sludge tank 72 and storing the accumulated sludge.

That is, in the circulation processing unit 70, the seawater in the scrubber tank 60 is supplied into the treatment unit 72 by the return pump 71, is purified in the treatment unit 72, And the sludge accumulated in the treatment section 72 is transferred to and stored in the sludge tank 74. [

The circulation processing unit 70 performs a circulation purification operation on the contaminated seawater W2 in the scrubber tank 60. [

The cooling water pump 80 supplies diluted seawater W1 to the circulation processing unit 70 by supplying undissolved seawater W1 to the seawater W3 discharged to the seawater discharge line 32, As shown in Fig. That is, the cooling water pump 80 has both a function of supplying the ship engine cooling water and a function of supplying seawater to the seawater discharge line.

The seawater discharge line 32 dilutes the contaminated seawater W2 containing sulfur oxides and the purified seawater W2a in the scrubber tank 60 with dilution seawater W1 to lower the concentration thereof, And is connected to the ship engine cooling water line 81 and is supplied with the seawater W1 for dilution by the cooling water pump 80. [

The seawater discharge line 82 is connected to the seawater supply line 31 connected to the ballast pump 40 by the first connection line 34 so that the seawater W1 is supplied by the ballast pump 40 .

The flow rate of the ballast pump 40, the coolant pump 80 and the auxiliary seawater pump 50 is adjusted by VFD (Variable Frequency Drive) 41, 81 and 51, respectively, have.

The amount of seawater supplied to the first and second scrubbers 10 and 20 or the seawater discharge line 31 by the ballast pump 40 and the coolant pump 80 and the auxiliary seawater pump 50 is controlled by the main engine ) And VFD (Variable Frequency Drive) is applied to change according to the load of the generator engine to control the flow rate of the existing ship ballast pump and to load or unload the cargo. The operation speed of the pump can be adjusted according to the quantity of the cargo, so that the fuel consumption can be minimized. Also, the system according to the present invention can be applied to both a closed loop and an open loop.

The ballast pump 40, the coolant pump 80, and the auxiliary seawater pump 50 are internally coated to prevent corrosion due to seawater containing sulfur oxides.

Hereinafter, the sulfur oxide removal process in the exhaust gas of the main engine and the generator engine according to the present invention will be described.

?? Removal of sulfur oxides from main engine exhaust

The exhaust gas G1 discharged from the ship main engine is supplied into the first scrubber 10 and the last seawater W1 is supplied into the first scrubber 10 through the seawater supply line 31 by the last pump 40. [ The contaminants including sulfur oxides in the exhaust gas are removed by the contact between the cleansing seawater W1 and the exhaust gas G1 in the first scrubber 10 and the exhaust gas G1a is discharged out of the first scrubber 10 and the contaminated seawater W2 containing contaminants is transferred to the scrubber tank 60 through the first scrubber discharge line 36. [

The contaminated seawater transferred to the scrubber tank 60 is treated by the circulation processing unit 70 and then the sludge is moved to and stored in the sludge tank 74. The contaminated seawater treated again is returned to the scrubber tank 60 ). At this time, the circulation processing unit 70 continuously circulates polluted seawater in the scrubber tank 60.

The polluted seawater W3 purified by the circulation processing unit 70 is moved to the outside of the ship through the seawater discharge line 32. At this time, the seawater discharge line The contaminated seawater W3 is diluted to the outside of the ship and the polluted seawater W4 in a low concentration is discharged.

?? Removal of sulfur oxides from generator engine exhaust

The exhaust gas discharged from the generator engine is supplied into the second scrubber, the auxiliary seawater pump (or ballast pump) supplies the washing seawater into the second scrubber through the seawater auxiliary line, and in the second scrubber, The contaminated water containing the pollutants is discharged out of the second scrubber, and the polluted seawater containing the pollutants is discharged to the second scrubber discharge line < RTI ID = 0.0 > To the scrubber tank.

The processing of the polluted seawater transferred to the scrubber tank is performed in the same manner as the sulfur oxide removal process of the main engine exhaust gas, so that a description thereof will be omitted.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

(10): first scrubber (11): auxiliary pump
(20): second scrubber (21): auxiliary pump
(31): Seawater supply line (32): Seawater discharge line
(33): seawater auxiliary line (34): first connection line
(35): second connection line (36): first scrubber outlet line
(37): second scrubber discharge line (40): ballast pump
(41): VFD (50): auxiliary seawater pump
(51): VFD (60): Scrubber tank
(70): circulation processing unit (71): return pump
(72): treatment section (73): circulation line
(74): sludge tank (80): cooling water pump
(81): VFD

Claims (6)

An apparatus for removing sulfur oxides in a ship exhaust gas by seawater;
A first scrubber 10 in which exhaust gas G1 discharged from the main engine of the ship flows in and is purified by the cleansing seawater,
A second scrubber 20 into which exhaust gas G2 discharged from the generator engine of the ship flows and is purified by the cleansing seawater,
A ballast pump 40 for supplying wash seawater to the first scrubber 10 through the seawater supply line 31 and supplying seawater to the ballast tank B of the ship,
An auxiliary seawater pump 50 for supplying wash seawater to the second scrubber 20,
A scrubber tank 60 connected to the first and second scrubbers 10 and 20 to collect polluted seawater discharged from the first and second scrubbers,
A circulation processing unit 70 for purifying the contaminated seawater in the scrubber tank 60 while circulating the polluted seawater,
A cooling water pump 80 for supplying dilution seawater to the seawater discharged from the scrubber tank 60 to discharge the diluted seawater to the outside of the ship through the seawater discharge line 32 and supplying the engine cooling water C to the engine of the ship ),
Wherein the sulfur oxides in the exhaust gas of the main engine and the generator engine are removed without increasing the space of the ship engine room.
The method of claim 1,
The seawater supply line 31 further includes an auxiliary pump 11 for cleaning the first scrubber 10 and supplying the washing seawater into the first scrubber 10,
Wherein the seawater auxiliary line (33) is further provided with another auxiliary pump (21) for cleaning the second scrubber (20) and supplying the seawater for washing into the second scrubber Sulfur oxide removal device in gas.
The method of claim 1,
The seawater auxiliary line 33 and the seawater supply line 31 are connected by a second connection line 35 and are introduced into the second scrubber 20 through the seawater auxiliary line 33 by the ballast pump 40, And the seawater is supplied to the ship. The apparatus for removing sulfur oxides in a ship exhaust gas using the ballast pump.
The method of claim 1,
The circulation processing unit 70 includes a return pump 71 for circulating contaminated seawater in the scrubber tank 60, a treatment unit 72 for purifying contaminated seawater supplied by the return pump, A circulation line 73 for supplying the contaminated seawater treated through the unit 72 into the scrubber tank and a sludge tank 74 connected to the treatment unit 72 and storing the accumulated sludge A device for removing sulfur oxides in a ship exhaust gas using a ballast pump.
The method of claim 1,
The seawater discharge line 32 is connected to the seawater supply line 31 by the first connection line 34 and is supplied with the seawater W1 by the ballast pump 40. [ A device for removing sulfur oxides in ship exhaust gases.
The method of claim 1,
The ballast pump 40, the cooling water pump 80 and the auxiliary seawater pump 50 are provided with VFDs (Variable Frequency Drive) 41, 81 and 51, respectively. Wherein the amount of sulfur oxides in the exhaust gas discharged from the ship is controlled by controlling the amount of the sulfur oxides in the exhaust gas.
KR1020120143324A 2012-12-11 2012-12-11 Exhaust gas scrubber sea water pump development KR20140075204A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180087368A (en) * 2016-03-08 2018-08-01 후지 덴키 가부시키가이샤 Wastewater treatment method and wastewater treatment system
KR20180130051A (en) * 2017-05-26 2018-12-06 삼성중공업 주식회사 Exhaust gas treatment system of ship
KR20190004475A (en) 2017-07-04 2019-01-14 대우조선해양 주식회사 Integrated inert gas system having desulfurization function, method for removing sulfur oxides, and vessel having the same
KR20190004474A (en) 2017-07-04 2019-01-14 대우조선해양 주식회사 System and method for removing sulfur oxides according to sea area of low salinity, and vessel having the system
KR20190053005A (en) 2017-11-09 2019-05-17 대우조선해양 주식회사 Seawater cleaning system for marine engine EGCS
KR20190123043A (en) * 2018-04-23 2019-10-31 현대머티리얼 주식회사 Integrated apparatus for cleaning exhaust gas

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180087368A (en) * 2016-03-08 2018-08-01 후지 덴키 가부시키가이샤 Wastewater treatment method and wastewater treatment system
US10800681B2 (en) 2016-03-08 2020-10-13 Fuji Electric Co., Ltd. Wastewater treatment method and wastewater treatment system
KR20180130051A (en) * 2017-05-26 2018-12-06 삼성중공업 주식회사 Exhaust gas treatment system of ship
KR20190004475A (en) 2017-07-04 2019-01-14 대우조선해양 주식회사 Integrated inert gas system having desulfurization function, method for removing sulfur oxides, and vessel having the same
KR20190004474A (en) 2017-07-04 2019-01-14 대우조선해양 주식회사 System and method for removing sulfur oxides according to sea area of low salinity, and vessel having the system
KR20190053005A (en) 2017-11-09 2019-05-17 대우조선해양 주식회사 Seawater cleaning system for marine engine EGCS
KR20190123043A (en) * 2018-04-23 2019-10-31 현대머티리얼 주식회사 Integrated apparatus for cleaning exhaust gas

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