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Exhaust Gas Cleaning System

The human is getting died prematurely rather than expected from long-term exposure to nitrogen oxides (NOx), sulfur oxides (SOx), and particulate matter (PM), while our Environment is getting worse and hotter due to CO2 accumulated continuously, Ship’s diesel engines for shipping are seen as significant contributors to NOx, SOx and PM emissions, as well as they produce CO2. Shipping contributes to these pollutions and has to reduce the pollution from the discharge, although it is impossible to eliminate all of discharged. It is our way to go not only for our healthy life, also for our future generation. In response to these impacts, the International Maritime Organization (IMO), through its Marine Environment Protection Committee (MEPC), introduced regulations for the prevention of air pollution under Annex VI of the MARPOL Convention.

Not only the existing ECA for meeting 0.1% sulfur, but also globally for meeting 0.5% sulfur limit in 2020, it does not tell just an option anymore, it is only a way to choose one of few alternatives to make the earth green again.

 


 

Compliance Options

Options

Advantage

Disadvantage

LOW SULPHUR FUELS

 

  • No initial capital expenditure
  • Easy fuel change over operation
  • High operating expense
  • Main engine lubrication

 

LNG

 

  • Qualified NOx, SOx and PM discharge

 

  • Difficult in retrofit
  • Highest initial capital expenditure
  • LNG bunkering
  • Higher safety standards required

SCRUBBER

 

  • Low operating expense of HFO
  • Fast ROI (<3 years)
  • Higher initial capital expenditure
  • ROI depends on fuel price
 

 


 Suitable System

 

Cost Control

★★★★★Open Loop

Simple system, no additives, low initial investment costs, low operating costs;

★★☆Closed Loop

Complex  system, higher initial investment costs, higher operating costs;

★★Hybrid

Complex system, high initial equipment investment, high installation costs;

 

Scope of application/Flexibility

Open Loop

Affected by the alkalinity and salinity of seawater;

★★★☆Closed Loop

Unaffected by the waters, operating in the global sea area;

★★★★★Hybrid

With the advantages of both open and closed system , flexible switching, sailing in the global sea;

 


 

Model & Parameters 

 

Scrubber Model

Power(MW)

Diameter(M)

Breadth(M)

Height(M)

Dry Weight(T)

8

2.2

4.3

10.5

≈12

12

2.7

5.3

11.2

≈15

18

3.3

6.4

12.0

≈18

24

3.8

7.4

12.5

≈20

30

4.2

8.2

13.0

≈22

 

Main Parameters

Operation mode

Open loop

Closed loop

Hybrid

Performance

3.5%→0.1%

System pressure loss

<1200pa

Exhaust gas inlet maximum temperature

400℃

Seawater usage

50 m3/MW-h

<0.1m3/ MW-h

<0.1m3/ MW-h

50 m3/MW-h

Power consumption

<2.0%

Main engine power

<1.0% Main engine power

Alkali consumption

N.A

<20 L / MW-h

Waste residue production

N.A

<20 L / MW-h

 


 

Reliable Components

Gas Monitoring

CODEL(UK)

SICK(Germany)

 

Water Monitoring

TriOS(Germany)

Chelsea(UK)

Green Inst.(Denmark)

 

Variable Speed Drive

Danfoss(Denmark) Motortrol(Sweden)Schneider(France)ABB(Sweden)

LSIS(Korea)

 

Actuators

AUMA(Germany)

LK(Sweden)

NOAH (Korea)

 

Pumps

DESMI(Danmark)

AZCUE(Spain)

NANIWA(Japan)

 

Water Treatment Unit

Hansun(China)

Ensolve(USA)

Liqtech(Denmark)

 


Turnkey Project

Reference to the attached brochure

 


 

SAT Result

The result of SAT for a 62.5MW Scrubber shows:

As MEPC.259(68), Guidelines for Exhaust Gas Cleaning Sytem, ratio emission SO2(ppm)/CO2(% v/v)  is 151.7 when using fuel oil sulphur content 3.5 (% m/m). Ratio is 21.7 when sulphur content 0.5. Ratio is 4.3 when sulphur content 0.1.

In this test, the ratio dropped from 137 to 2, less than 4.3. Desulfurization rate exceeds 98.5%.

 


 Reference for EGCS

 

Hamburg Bay               

62.5MW/I/Open

 

MSC-Altamira               

MSC-Albany                 

MSC-Anchorage

48.5MW/U/Hybrid

 

M/V Mexico  39.7MW 

M/V Bellatrix  28.3MW  

M/V Genova  35.2MW

M/V Cali  29.1MW    

M/V Lori  29.1MW   

U/Open