SHANGHAI TUNA MARINEENVIRONMENT TECHNOLOGY CO., LTD.

All data, information, statements, photographs and graphic illustrations in this brochure are without any obligation and raise no liabilities to or form part of any sales contracts of TUNA MARINE or any a�liates or equipment and/or systems referred to herein. No part of this copyrighted work may be reproduced, modified or distributed in any form or by any means, or stored in any database or retrieval system, without the prior written permission of TUNA MARINE or its a�liates. Any such unauthorized use for any purpose is a violation of the relevant copyright laws.

Address: Room 702, Block D, Luneng International Center, 209 Guoyao Road, Pudong New Area, Shanghai, ChinaTel: +86-21-6079 2515 Fax: +86-21-6079 2519E-mail: sales.sh@zj-tuna.com www.zj-tuna.com

Shanghai Tuna Marine Environment Technology Co., Ltd.

Exhaust gas cleaning system for maritime industryTMOU-SOx | TMOI-SOx

page01 page 02

Sulphur Oxides (SOx) in marine engines exhaust gas is concern to human health and the environment. Adverse e�ects are experienced at local, regional and global level.

In response to these impacts, the international Maritime Organization (IMO) introduces regulations for the prevention of air pollution under Annex VI of the MARPOL Convention. MARPOL Annex VI imposes a framework of mandatory limits on emissions of SOx both globally and Emission Control Areas (ECAs).

In parallel with MARPOL Annex VI, a number of regional, national and local regulators have introduced their own controls, leading to a patchwork of regulatory requirements.

REGULATORY FRAMEWORK REGULATORY FRAMEWORK

North America Caribbean Sea the North Sea the Baltic

2015 ECA

0.1% S

2020

0.5% S

Coastal ECA

all ECAs,wider

extension

0.5%within

inland watercontrol areas

0.1%Territorial

coastal watersof Hainan island

0.1%

TMOU-SOx | TMOI-SOx

This product is applicable to the SOx emission reduction for marine fuel combustion device. The SOx concentration can be reduced through the installed marine desulfurization scrubber to make the SOx emission value less than the emission value when using fuel containing 0.1% sulfur (m/m).(MARPOL Annex VI 14.4.3)

Product Overview

With the development of international ocean shipping industries, the exhaust gas from ships has become the main pollution source in coastal areas, especially in ports areas. The air pollution caused by SOx in the exhaust gas from ships has attracted extensive attention of the international community. At present, there are four main technologies for desulfurization of exhaust gas from ocean ships, which are low sulfur fuel technology, LNG fuel technology, dry flue gas desulfurization technology and wet flue gas desulfurization(FGD) technology. Presently, wet FGD is adopted the mainstream technology.

In open loop system, ship flue gas passes through the scrubber tower and is directly washed by seawater for desulfurization. After desulfurization, the clean flue gas is discharged through the chimney, and the washed water is discharged after simple treatment in accordance with standard.

Application Background

Process Selection

■Open Loop System

TUNA’s scrubber is u-shaped tower and the flue gas enters from the auxiliary tower. Compared with the i-shaped tower, it has the advantages of higher security and lower height.

Our design relies on the packed tower using sodium alkali desulfurization.

The packing material is placed in the tower, and slurry moistens the packing surface to increase the contact area between gaseous phase and liquid phase. The porosity of packing layer not only achieves air-distribution uniformity but also promotes the turbulence of gaseous phase.

■Scrubber System

page03 page 04

EXHAUST GAS CLEANING SYSTEM (EGCS) TM-SOx SYSTEM

The hybrid system integrates both open and close loop system and has the flexibility to operate seamlessly in either in low alkaline waters as well as the open ocean. Without the loss of e�ciency and well within the IMO regulations for emission Air and Sea.

■Hybrid System

17

132600

4000

9400

15100

209

Scrubber type of TMOU-SOx Unit

MW

KG/h

MM

MM

KG

KW

Power SMCR

Exhaust gas flow (@SMCR)

Nominal diameter

Total height

Net weight

Power consumption in OL

TMOU-SOx-17

15

117000

3700

8900

13300

186

TMOU-SOx-15

13

101400

3400

8700

12700

164

TMOU-SOx-13

11

85800

3200

8250

12100

141

TMOU-SOx-11

10

78000

3000

8300

11200

129

TMOU-SOx-10

9

70200

2900

7800

10500

110

TMOU-SOx-9

8

62400

2700

7700

9500

100

TMOU-SOx-8

6

46800

2400

7200

8100

79

TMOU-SOx-6

4

31200

1900

6600

5800

56

TMOU-SOx-4

80

624000

8500

15750

58300

1066

Scrubber type of TMOU-SOx Unit

MW

KG/h

MM

MM

KG

KW

Power SMCR

Exhaust gas flow (@SMCR)

Nominal diameter

Total height

Net weight

Power consumption in OL

TMOU-SOx-80

71

553800

8000

15050

48700

947

TMOU-SOx-71

63

491400

7500

14450

40800

843

TMOU-SOx-63

55

429000

7000

13700

36100

739

TMOU-SOx-55

47

366600

6500

13000

33770

633

TMOU-SOx-47

40

312000

6000

12300

30500

541

TMOU-SOx-40

34

265200

5500

11750

27700

462

TMOU-SOx-34

28

218400

5000

10950

23600

384

TMOU-SOx-28

22

171600

4500

10150

19100

285

TMOU-SOx-22

17

132600

3400

11300

8300

250

Scrubber type of TMOI-SOx Unit

MW

KG/h

MM

MM

KG

KW

Power SMCR

Exhaust gas flow (@SMCR)

Nominal diameter

Total height

Net weight

Power consumption in OL

TMOI-SOx-17

15

117000

3200

11100

7600

223

TMOI-SOx-15

13

101400

2900

10900

6800

196

TMOI-SOx-13

11

85800

2700

10200

5900

169

TMOI-SOx-11

10

78000

2600

10200

5700

154

TMOI-SOx-10

9

70200

2500

10000

5400

139

TMOI-SOx-9

8

62400

2300

9900

4900

127

TMOI-SOx-8

6

46800

2000

9900

4300

99

TMOI-SOx-6

4

31200

1700

9600

3500

72

TMOI-SOx-4

80

624000

7200

13900

25700

1115

Scrubber type of TMOI-SOx Unit

MW

KG/h

MM

MM

KG

KW

Power SMCR

Exhaust gas flow (@SMCR)

Nominal diameter

Total height

Net weight

Power consumption in OL

TMOI-SOx-80

71

553800

6800

13800

24100

993

TMOI-SOx-71

63

491400

6400

13500

22200

882

TMOI-SOx-63

55

429000

6000

13300

20500

773

TMOI-SOx-55

47

366600

5600

12400

17900

662

TMOI-SOx-47

40

312000

5100

12100

15900

565

TMOI-SOx-40

34

265200

4700

11900

14400

483

TMOI-SOx-34

28

218400

4300

11700

12900

401

TMOI-SOx-28

22

171600

3800

11500

11300

320

TMOI-SOx-22

TMOU-SOx | TMOI-SOx

U-shaped Tower

I-shaped Tower

The alkali supplement system consist of one lye tank and two alkali supplement pumps (one main and another for standby). In order to neutralize the acidity of the exhaust gas, NaOH (Caustic Soda) is added into inlet of circulation pump by alkali supplement pump.The flow rate of fresh lye is calculated according to the correlation between SQ2 and flue gas flow rate, and adjusted by feedback form pH meter and densitometer.

Alkali Supplement SystemSubsystem and Auxiliary Equipment: The ECGS control system is divided into three functional block: washing, heat exchange and waste treatment block. Ship crews can monitor and control the whole system by using an advance touch screen interface unit. The control system comes with a communication port which allowed exchange of data, operation parameters can be either uploaded, stored or printed. Shipowners can set up monitoring station in the ship control room according to their owe needs. The structure diagram of the EGCS control system is shown in Figure 4.6-1 and the outer dimension drawing of the control cabinet is shown in Figure 4.6-2.

Subsystem and Auxiliary Equipment

page05 page 06

EXHAUST GAS CLEANING SYSTEM (EGCS)

SO2 will be absorbed by the lye at the spray layer of the scrubber and the residue will flow to the bottom of the scrubber. Which is send into the lye circulation tank. A lye circulating pump will recycle the lye back into the spray layer. provided with lye circulating pump to resend the lye into the spray layer.

Lye Circulating System

pneumatic stirring device of the circulating tank

Vertical alkali supplement pumps control flow chart Waste water treatment unit Outer dimension drawing of the power distribution cabinet

Plate type heat exchanger seawater self-priming pumpVertical circulating pump

He pumps or fans of EGCS are power by the main switch board (AC440V 60Hz) of the ship with Power distribution cabinets dedicated independent. The main control cabinet is power by the main switch board (AC230V 60Hz) of the ship. The instrument and Electric valves are power by the main control cabinet.

Electrical System

TMOU-SOx | TMOI-SOx

The seawater heat exchange systems adopts a plate heat exchanger to reduce the temperature of circulating lye into scrubber. This will reduce the temperature of the exhaust flue gas.

Seawater Cooling System

Waste Water Treatment System: The waste water treatment System is installed in the system to prevent the impurity accumulation in scrubbing water and to maintain required process chemistry. The waste water treatment System can be started or stopped or selected to remote control using the local control panel in the unit. The residue sludge is automatically pumped from WWTU to the external sludge tank. The clear water passes a series of ba�es and a parallel flock trap to separate the smaller particles before it is overflowed to the discharge holding tank.

Waste Water Treatment System

I/O ComponentsI/O Components I/O Components I/O Components

Communication bus

Main controller(redundancy)

SCnet

Operatorstation

Engineerstation

Printer Historicaldata station

OPCdata station

Manage users Data loggerEthernet

SOnet

Exhaustgas

NaOHunit

Scrubber

Cooler

Pump

Pump

Process tank

Watertreatment

Sludge tank

Holding tank

Fresh water

SeawaterClosed loop washwater

Treated washwater

SludgeSodium hydroxide (NaOH)

Fresh Water

page07 page 08

Bulk Carrier Scrubber SchemeProject Case Chemical Tanker Scrubber SchemeProject Case

Vessel specificationsTypeOwnerClassFlag

BULK CARRIERSUMECNKLiberia

Engine informationMain engineMain engine typeQuantityEngine MCR Fuel typeFuel sulphur contentAux. engine Aux. engine typeQuantityEngine MCR Fuel typeFuel sulphur content

MAN B&W 6S60ME-C8.5 T-Ⅱ1 set9.663 MWHFO3.5%

6EY18ALW3 sets0.8 MWHFO3.5%

Scrubber informationScrubber typeTreated exh.has flowDiameterHeightDry weightMaterial

Open loop76140kg/h3.1m8m

UNS S32205+UNS S31254

Vessel specificationsTypeOwnerClassFlag

Chemical TankerGOLDWIN

Engine informationMain engine Main engine typeQuantityEngine MCR Fuel typeFuel sulphur contentAux. engine Aux. engine typeQuantityEngine MCR Fuel typeFuel sulphur content

MAN B&W 6S70ME1 set18.66 MWHFO3.5%

MAN 7L23/303 sets0.909 MWHFO3.5%

Scrubber informationScrubber typeTreated exh.has flowDiameterHeightDry weightMaterial

Open loop169416kg/h4.5m10.1m

UNS S32205+UNS S31254

TMOU-SOx | TMOI-SOx

page09 page 10

Container Vessel Scrubber SchemeProject Case Multipurpose Cargo Ship Scrubber SchemeProject Case

Vessel specificationsTypeOwnerClassFlag

CONTAINER VESSELX-PRESSDNV-GLSingapore

Engine informationMain engine Main engine typeQuantityEngine MCR Fuel typeFuel sulphur contentAux. engine Aux. engine typeQuantityEngine MCR Fuel typeFuel sulphur content

MAN B&W 6G60ME-G9.5-TII1 set12.5 MWHFO3.5%

MAN 9L21/314 sets1.98 MWHFO3.5%

Scrubber informationScrubber informationScrubber typeTreated exh.has flowDiameterHeightDry weightMaterial

Hybrid117474kg/h3.9m6.6m

UNS S32205+UNS S31254

Vessel specificationsTypeOwnerClassFlag

multipurpose cargo ship

LRNetherlands

Engine informationMain engine Main engine typeQuantityEngine MCR Fuel typeFuel sulphur contentAux. engine Aux. engine typeQuantityEngine MCR Fuel typeFuel sulphur content

WARTSILA 9L321 set5.22 MWHFO3.0%

WARTSILA 9L204 sets1.98 MWHFO3.0%

Scrubber informationScrubber typeTreated exh.has flowDiameterHeightDry weightMaterial

Open loop52100kg/h2.9m8.2m

SMO 254

TMOU-SOx | TMOI-SOx