Mô tả:
NHIÊN LIỆU HÀNG HẢI
(MARINE FUEL)
NHÓM 4: ĐỖ THỊ LIÊN
NGUYỄN NGỌC NGHIỆP
CONTENT
Thực trạng
Lịch sử hình thành động cơ hàng hải
Động cơ hàng hải
Nhiên liệu hàng hải và nguồn gốc
Tiêu chuẩn đánh giá
Tính chất nhiên liệu và phụ gia
Nhiên liệu hàng hải trong tương lai
MARINE TRAFFIC
Delivery Locations
300,000 cubic metres in Singapore
300,000 cubic metres in Tanjung Bin
275,000 cubic metres floating storage in Tanjung Pelepas anchorage
Dung quất 70.000 tones = 56,000 cubic metres
IN VIET NAM
SO SÁNH GIÁ CẢ DIESEL, XĂNG, MARINE
Vùng 1
Vùng 2
Xăng RON 95
24.710
25.200
Xăng RON 92
24.210
24.690
DO 0,05S
22.960
23.410
DO 0,25S
22.910
23.360
Dầu hoả
22.400
22.840
Sản phẩm
PRICES
Diesel oil: 990.77 USD/ tone
HISTORY OF MARINE ENGINE
1950s
1920s
First half
of 20th
century
• Steamship
popular
• Diesel and
residual
increase
• Diesel more
benefit due to
small
difference of
cost
• Innovations for
diesel engine to
use heavier
fuels.
• High alkalinity
cylinder
lubricants for
high sulphur
residual fuels
1960s
Start of 21st
century
Considerable
benefit due to
cheaper
residual fuels.
Diesel ships
accounted
for 98% fleet.
Diesel ship
using residual
fuels popular
NGUYÊN LÍ HOẠT ĐỘNG CỦA ĐỘNG CƠ HÀNG HẢI
Động cơ 2 thì: tạo công và nén trước; nén và hút
Ưu điểm: hiệu suất riêng
(hiệu suất trên dung tích)
cao.
Thiết kế đơn giản động cơ
hai thì mang lại nhiều ưu
điểm như dễ bảo trì hơn và
có khối lượng di động (trục
khuỷu, píttông,...) nhỏ hơn.
Vận tốc pittong nhỏ
Thích hợp cho tàu thủy
công suất lớn (nòng xy lanh
1 mét)
ĐỘNG CƠ 4 KÌ
Tốc độ pittong bé hơn, công suất
nhỏ hơn, cháy sạch hơn hai kỳ.
Chỉ thích hợp cho loại tàu thủy
hạng nhẹ
TIÊU CHUẨN KHÍ THẢI CHO MARINE FUEL
Tier 2* Marine Emission Standards
Category
1
2
Displacement (D) CO
NOx+THC
PM
dm3 per cylinder
g/kWh
g/kWh
g/kWh
Power ≥ 37 kW
D < 0.9
5.0
7.5
0.40
2005
0.9 ≤ D < 1.2
5.0
7.2
0.30
2004
1.2 ≤ D < 2.5
5.0
7.2
0.20
2004
2.5 ≤ D < 5.0
5.0
7.2
0.20
2007a
5.0 ≤ D < 15
5.0
7.8
0.27
2007a
15 ≤ D < 20
Power < 3300 kW
5.0
8.7
0.50
2007a
15 ≤ D < 20
Power ≥ 3300 kW
5.0
9.8
0.50
2007a
20 ≤ D < 25
5.0
9.8
0.50
2007a
25 ≤ D < 30
5.0
11.0
0.50
2007a
* - Tier 1 standards are equivalent to the MARPOL Annex VI Tier I NOx limits
a - Tier 1 certification requirement starts in 2004
Date
“Blue Sky Series” Voluntary Emission Standards
Displacement (D)
NOx+THC
PM
dm3 per cylinder
Power ≥ 37 kW & D < 0.9
0.9 ≤ D < 1.2
1.2 ≤ D < 2.5
2.5 ≤ D < 5.0
5.0 ≤ D < 15
15 ≤ D < 20 & Power <
3300 kW
15 ≤ D < 20 & Power ≥
3300 kW
20 ≤ D < 25
25 ≤ D < 30
g/kWh
4.0
4.0
4.0
5.0
5.0
g/kWh
0.24
0.18
0.12
0.12
0.16
5.2
0.30
5.9
0.30
5.9
6.6
0.30
0.30
Tier 3 Standards for Marine Diesel Category 1 Commercial
Standard Power Density (≤ 35 kW/dm3) Engines
Power (P)
Displacement (D)
NOx+HC†
PM
kW
dm3 per cylinder
g/kWh
g/kWh
P < 19
D < 0.9
7.5
0.40
2009
19 ≤ P < 75
D < 0.9a
7.5
0.30
2009
4.7b
0.30b
2014
D < 0.9
5.4
0.14
2012
0.9 ≤ D < 1.2
5.4
0.12
2013
1.2 ≤ D < 2.5
5.6
0.11c
2014
2.5 ≤ D < 3.5
5.6
0.11c
2013
3.5 ≤ D < 7
5.8
0.11c
2012
75 ≤ P < 3700
Date
† Tier 3 NOx+HC standards do not apply to 2000-3700 kW engines.
a - < 75 kW engines ≥ 0.9 dm3/cylinder are subject to the corresponding 75-3700 kW standards.
b - Option: 0.20 g/kWh PM & 5.8 g/kWh NOx+HC in 2014.
c - This standard level drops to 0.10 g/kWh in 2018 for < 600 kW engines.
Tier 3 Standards for Marine Diesel Category 1 Commercial High Power Density (> 35 kW/dm3) Engines
And All Diesel Recreational Engines
Power (P)
Displacement (D)
NOx+HC
PM
kW
dm3 per cylinder
g/kWh
g/kWh
P < 19
D < 0.9
7.5
0.40
2009
7.5
0.30
2009
4.7b
0.30b
2014
D < 0.9
5.8
0.15
2012
0.9 ≤ D < 1.2
5.8
0.14
2013
1.2 ≤ D < 2.5
5.8
0.12
2014
2.5 ≤ D < 3.5
5.8
0.12
2013
3.5 ≤ D < 7
5.8
0.11
2012
19 ≤ P < 75
75 ≤ P < 3700
D
< 0.9a
Date
a - < 75 kW engines ≥ 0.9 dm3/cylinder are subject to the corresponding 75-3700 kW standards.
b - Option: 0.20 g/kWh PM & 5.8 g/kWh NOx+HC in 2014.
TYPES OF MARINE FUELS
MGO (Marine gas oil) made from distillate only.
MDO (Marine diesel oil) - A blend of heavy gasoil that may contain very small amounts of
black refinery feed stocks, but has a low viscosity up to 12 cSt so it need not be heated for
use in internal combustion engines
IFO (Intermediate fuel oil) A blend of gasoil and heavy fuel oil, with less gasoil than marine
diesel oil
MFO (Marine fuel oil) or HFO (Heavy fuel oil) - Pure or nearly pure residual oil.
MGO
Distillate Fuels
MDO
IFO
MFO
Residual Fuels
OTHER CLASSIFICATION
• According ISO 8217 standard:
DMX
• special
light
distillate
intended
mainly for
use in
emergency
engines.
DMA
• Also called
MGO
• free from
traces of
residual
fuel
DMB
• Also called
MDO
• May have
traces of
residual
fuel
• can be
high in
sulfur
DMC
• contain
residual
fuel, and is
often a
residual
fuel blend
Distillate Fuels
Standards have also been developed for biodiesel fuels and their blends.
RX*
• Residual
(nondistillate)
• identified
by their
nominal
viscosity
(e.g.,
RMA10,
RMG35,…)
Residual Fuels
CII (CALCULATED IGNITION INDEX )
Same CN
CCAI
(CALCULATED CARBON AROMATICITY INDEX)
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