lng transportation, cargo handling and fuelling applications

Equipment and Solutions
LNG TRANSPORTATION, CARGO HANDLING AND FUELLING APPLICATIONS
THE Cryostar GROUP
Cryostar is a cryogenic equipment manufacturer with more than 600 employees including 150 engineers. With its headquarters located in France,
the company operates five production sites and is present worldwide
through eight business centers and 16 business partners.
Founded in 1966 the company has over 40 years experience
with LNG and has become the world leader for boil off
gas compressors and on-board liquefaction units for
LNG carriers. The company has delivered thousands
of cryogenic pumps for liquid hydrocarbon applications (including methane, ethylene, ethane, etc.)
SAFETY AND STANDARDS
Safety is an integral part of Cryostar’s management and manufacturing commitments. For each new development or project, the
company performs a risk analysis using approved techniques such
as HAZOP (Hazard and Operability) and FMEA (Failure Mode and
Effects Analysis). Cryostar’s solutions comply with most stringent
machine and safety regulations such as the Pressure Equipment
Directive 97/23/CE (Module H and H1) and ATEX.
“All marine equipment is Class approved before shipping and Cryostar has experience with numerous Classification Societies.”
Cryostar’s engineers continuously innovate with patented solutions for various applications throughout the LNG
supply chain such as small scale liquefaction, LNG transportation, LNG/LCNG vehicle refueling stations and LNG
bunkering.
FACTORY AND ON-SITE ACCEPTANCE TESTS
Cryostar’s headquarters host the world’s largest and most sophisticated liquid nitrogen test facility for cryogenic pumps as well as
three test facilities dedicated to turbines. Cryostar engineers subject each pump and turbine to a performance test prior to shipment, offering customers guaranteed performance. Cryostar provides commissioning, start-up and support for onsite performance
for liquefaction plants and refueling stations.
CRYOSTAR United Kingdom
CRYOSTAR France
CRYOSTAR Automation
CRYOSTAR USA West
QUALITY AND ENVIRONMENT
CRYOSTAR USA East
CRYOSTAR China
CRYOSTAR Houston
CRYOSTAR India
CRYOSTAR Singapore
CRYOSTAR Brazil
CRYOSTAR BUSINESS CENTRES
GLOBAL CRYOSTAR
2
Cryostar is ISO 9001-2008 certified. To structure its environmental
approach, Cryostar has used the ISO 14001 standard to set up all
the organizational and operational processes necessary for an aspiring Environmentally Responsible company. In parallel, Cryostar
has applied this approach to Health and Safety through the OHSAS
18001 standard. ISO 9001-2008/ ISO 14001-2004 / OHSAS 180012007 quality assurance system.
EQUIPMENT FOR THE MARINE TRANSPORTATION OF LNG
Fleet LNG Station
Digester
City
Landfill
LNG Bunkering Station
CSM
CBM
Small Town
Small Scale Liquefaction
Small Scale Liquefaction
Satelite LNG Plant
Industry
Peak Shaving Plant
Pressure Let Down Station
Truck Stop LNG
refuelling station
LCNG / LNG Station
Gas Pipeline
LNG Trailer
LNG Feeder
LNG Receiving Terminal
Ferry
LNG Bunkering Barge
LNG Carrier
LNG Floating Storage
and Regasification Unit
3
Boil-off gas as a fuel – LNG carriers
are the cleanest ships around !
Cryostar has been supplying machinery allowing LNG carrier boil–off to be used as fuel gas since
the 90’s. The natural boil-off vapour from the cargo tanks is compressed and routed to the vessel’s propulsion systems, providing both a clean fuel and handling the gas generated from the
tank storage. Many of the improvements to enhance efficient operation of these vessels have
been realised with Cryostar’s support in developing versatile, efficient and reliable machinery.
From steam turbines to low
pressure 2-stroke engines
Cryostar began producing compressors to supply boilers fitted to
steam turbine propelled vessels. As new propulsion technologies
were proposed, close co-operation with engine makers, shipyards
and ship-owners led to the most versatile designs allowing flexibility for operational needs.
industry-leading
developments are common…
4
BOIL-OFF GAS AS A FUEL
Dual fuel 4-stroke and 2-stroke
The diesel electric and low speed diesel propelled vessels require stringent
control of flow and delivery pressure for the fuel gas. The CM4-200 and
CM6-200 BOG compressors are perfectly suited to fulfil these exacting requirements.
4 stage BOG fuel gas compressor
Discharge Pressure bar a
Cryostar CM type compressors
20
16
CM6-200
12
8
4
0
CM4-200
CM2-200/CM2-300
CM 300
1000 2000 3000 4000 5000 6000 7000 8000 9000 10000
Inlet Flow m3/h
Coupled with
stepless flow
control,
extremely low vibration levels
and no pulsations, this technology is perfectly suited to
the long term
requirements
of an LNG carrier. Long service intervals
are standard.
Simple operation is possible,
with all safety
controls integrated into the
vessel’s main
control system.
6 stage BOG fuel gas compressor
5
Fuelling for the future…
In recent years, vessel emission regulations have progressively tightened. This means that alternative methods are necessary to achieve compliance. Fuelling with LNG is one of the simplest and cleanest ways to achieve compliance.
From fuel tank to engine
Head [m]
Small in-tank pumps supply the liquid to the high pressure pumps located deck-side.
Perfectly suited for this application, they are fitted with
ceramic bearings for extended lifetime. Mounting can be
either in an external sump, or internally in the tank.
380
360
340
320
300
280
260
240
220
200
180
160
140
120
100
80
60
40
20
0
SUBTRAN
15 & 22
SUBTRAN
45/50
Max. differential pressure (design)
SUBTRAN 15:
19bar
SUBTRAN 60 and 75:
20bar
SUBTRAN 22 and 45:
30bar
SUBTRAN
45/80
SUBTRAN
60/200
SUBTRAN
60/130
0
20
40
60
SUBTRAN
75/230
80
100
120
140
160
Flow [m3/h]
6
SUBTRAN Head-Flow ranges
180
200
220
240
Subtran
submerged
pump
LNG AS A FUEL
40 years of experience
in every pump…
Dual fuel 2-stroke marine engines
The high pressures required to fuel a 2-stroke diesel cycle engine on gas are well
within the range of these exceptional pumps. Developed over a period of 40 years,
they represent the very highest quality available.
Extremely low NPSH levels coupled with high reliability and efficiency, make Cryostar
the natural choice. Simple maintenance and option of belt, gear or hydraulic drives
complete the package. The pumps are delivered on completed skids fully tested in
our world-leading facility in France.
Pumps for ethane fuelling complete our portfolio.
0
0
10
2
20
4
30
6
40
8
50
10
60
12
70
14
80
16
90
18
20
100
22
gal/min
24
m3/h
HPP 75/110 OL3
HPP 75/90 GR3
HPP 65/90 GR3
HPP 65 / 90 Gx3
HPP 65/70 OL3
Model
HRP 48/90 GL3
Triplex
reciprocating pump
Bore
Number of
cylinders
Stroke Transmission type
MRP 40/55 OL3
MRP 40/40 OL3
0
1
2
3
4
5
6
Flow (t/h) with density = 0.45 kg/l
7
8
9
10
11
7
Boil-off gas recovery for overall
vessel efficiency
Since the boil-off generated in the cargo tanks has to be handled on board and often the engine fuel gas
consumption is lower than the natural boil-off, it is necessary either to burn or reliquefy the surplus gas. This
surplus can then be traded rather than being lost.
EcoRel-S
Cryostar built their first marine reliquefaction plants in 2007 for the entire fleet of Q-Max vessels. These giants
have by now accumulated a large number of running hours and tremendous experience has been gained, complementing the extensive studies performed for the initial unit.
EcoRel-S
EcoRel-S is best suited for vessels with low speed 2-stroke engines, or DFDE vessels with 4-stroke propulsion.
Cryostar’s patented desuperheater provides maximum system protection, allowing faster plant cooldown
from ambient and faster load-up from idle than its competitors.
Main Engine [DFDE/XDF/ME-GI]
Genset
GCU
BOG Compressor
BOG
Desuperheater
N2 Counter Current
Exchanger
BOG
Condenser
LNG
Drum
8
N2 inter &
after coolers
N2 Compander
full reliquefaction
is possible
BOG RECOVERY
EcoRel-X
composition has
smaller influence
than for
nitrogen-based
systems
EcoRel-X
When 2-stroke medium speed XDF type engines were introduced, it was
possible to benefit from the higher BOG pressure in the fuel gas line.
Cryostar has patented a system using BOG as the working fluid in a semi-open cycle. This allows superior exploitation of residual cold in the process to reduce the power consumption,
while still returning excellent results for condensate recovery. Utilising a BOG compander,
together with a JT valve, the
system remains simple, and has
Main Engine [DFDE/XDF/ME-GI]
Genset
no major effect on the primary
GCU
BOG Compressor
design of the fuel gas system.
BOG Compander
The complexities of nitrogen inventory are avoided and the
system can be easily integrated into vessel cargo systems.
BOG inter &
after coolers
N2 Counter Current
Exchanger
LNG
Drum
as a working fluid,
BOG is readily available
Cryostar compander
9
EcoVap Propane Intermediate Loop
Cryostar has developed a unique solution for LNG regasification of LNG aboard
FSRU vessels. The heat source is the energy available in the seawater. A propane intermediate loop provides a separation between the LNG and the seawater.
A modular approach to the design allows scaling flexibility for different design flows and compositions. The plant can be designed for maximum sendout flows, even in cold seawater conditions.
EcoVAP C3V-C3V
NG out
LNG in
PCHE
LNG Pumps
Propane
Drum
PHE
PHE
Seawater
in/out
10
LNG pum
LNG REGAS
EcoVap Glycol Water Intermediate Loop
For
owners
who
would
prefer
to
avoid
propane,
a
glycol
water
intermediate
loop
is
available.
While designed for a specific seawater temperature, the unit can still be operated in colder
climates
by
de-rating
the
output
to
minimise
capital
costs.
The
simplicity of the system configuration allows easy integration as original equipment or as a retrofit option. The easy handling of the intermediate fluid makes this an environmentally safe solution.
mp skid
EcoVAP-GW
NG out
LNG in
LNG Pumps
Vaporizer/
Trim heater
Expansion
Drum
PHE
Seawater
in/out
11
StarLiteTM
Cryostar’s StarliteTM nitrogen loop liquefiers for landbased applications typically comprise a compander with air cooling and coldbox. Plants are available adapted for regular, as well as cold climates.
Gas feed from pipeline or biogas can be handled. Plants are available in the range of 20~100 tons per day.
The system draws on the experience of the 18 EcoRel-S plants currently in service.
12
Typical Liquefier
LANDBASED LNG
LNG Receiving Terminals are equipped with blowers to balance the gas volumes
when LNG carriers unload. These machines are derivatives of the similar machines
installed on the carriers themselves.
Built to different regulations, they benefit from the rugged reliability provided by
the on-board machines.
60
Adiabatic Head Rise [KJ/kg]
Landbased BOG
compressors and blowers
50
ge
40
e
Lin
30
0°
-30°
+50°
20
10
0
Multi-stage BOG compressor
r
Su
+70°
MIN
0
5000
INLET GUIDE VANES
SETTING
10000
15000
20000
25000
30000
Volume Flow [m3/h]
Single stage return gas blower
13
Premium technology is our standard
When designing our machines, the best possible materials and components are sourced. Sophisticated tools are used to analyse and prepare the best possible solution for each design aspect. Finally the machines are proven by testing in rigorous conditions in one of our 5 test facilities.
Gas seals
Especially developed, together with a major sealing supplier, Cryostar uses the latest
technology to minimise sealgas consumption while maintaining the safety of a gas
tight seal.
Flow control
To provide the smoothest stepless flow control, Variable Diffuser Vanes are used.
These systems are applied to thousands of our machines.
High-speed bearings
To allow long service intervals with the best possible performance, tilting pad bearings
are utilised in all our high speed turbomachinery gearboxes.
Reciprocating
pump
Factory
Acceptance
Test
14
TECHNOLOGY & SERVICE
Caring for your equipment
for 40 years
Since the production of equipment began in 1967, Cryostar
has always emphasised the need to support the end-user for
the life of the equipment.
In the world of marine applications, the reliability and efficient operation of the equipment is mission critical. This is
why Cryostar allocates each vessel to a single point of contact for most efficient servicing, parts supply and technical
back-up.
Many end-users benefit from our maintenance agreements
when it comes to dry-dock servicing. Dedicated spare parts
kits ensure that no critical parts are missing during this
time-pressured period off-hire. Routine and major servicing
can be handled by our large team of technical experts anywhere in the world.
Unplanned maintenance interventions are always a challenge, with the vessel presenting a moving target. It requires
skill, patience and immense co-operation to achieve seamless
service under these circumstances. Cryostar’s service team is
geographically distributed, affording quick reaction times
wherever you may be, and the 24h service line means that
you are guaranteed a response.
Most equipment only needs servicing at 5 and 10 year intervals, so it is key that the organisation is well planned and our
team is always ready to work with you to define a course of
action.
15
BRAZIL
CHINA
FRANCE
INDIA
SINGAPORE
UK
USA
For contact and address of Cryostar
locations worldwide, please go to
www.Cryostar.com/locations
www.Cryostar.com
© Cryostar - all rights reserved