SHANGHAI TUNA MARINEENVIRONMENT TECHNOLOGY CO., LTD.
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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: [email protected] 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