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LNG FueL puMpING SySteMS
Marine
rail
land
Off-rOad
2 Fuel Supply Pumps – LNG
ACD offers a wide range of cryogenic fuel supply pumps to accommodate various flow and pressure requirements for LNG fueled gas engine systems, bulk transfer, off-loading, and bunkering.Each centrifugal and reciprocating pump is specifically designed to meet LNG or CNG applications while providing both efficient operation and extended product life. Cryogenic, hydro, and pneumatic testing during the assembly phase ensure that ACD pumps comply with industry requirements and match product performance guarantees.
• Rail/Locomotive (LNG)• Marine (LNG)• Bus (CNG & LNG)• Light or medium duty truck (CNG & LNG) • Heavy duty truck (LNG)• Passenger car (CNG) • LMT (LNG)
• Fuel gas systems• LNG high pressure feed to L/CNG station vaporizers• Vehicle loading and trailer off-loading• Bulk transfer • Bunkering
LIqueFIed NAturAL GAS
Fueling Applications
Pump Applications
LNG properties• 1 Litre = .64 Nm3 gas • ± 95% methane (CH4) • Expansion (liquid to gas): 1 to 620 • Colorless & odorless • Non toxic, non corrosive • Specific gravity: Natural gas = .55
(Air = 1.0, Gasoline = 3.4, Diesel > 4.0) • Flammability limit: 5-15% (vs. 0.5-4.1% for
diesel and 1-7.6% for gasoline) mixed with air • Ignition temperature: 281-343ºC (538-649°F)
estimated Greenhouse Gas (GHG) reduction in Light-duty Vehicles (LdVs)
• LNG (21-25%, CH4)• CNG (21-26%, CH4)• Natural gas vehicles reduce emissions
(NOx = 87%; CO = 70%)
L/CNG StAtIoN operAtIoNS
Fuel Supply Pumps – LNG 3
LNG Station operations• Fuel is brought in by transport trailers/tank lorrys• LNG is stored in a cryogenic tank• Vehicles are fueled using an ACD pump and
single fill hose from dispenser L/CNG Station operations• Up stream same as LNG• LP pump provides boost for the HP pump• HP pump discharges HP LNG to vaporizer• CNG from vaporizer goes into storage tank, dispenser to vehicle
P
P
.. .
. ..LNG
VAPORIZERCNG STORAGE TANK CNG VEHICLE
LNG VEHICLE
LNG STORAGE TANK LNG DISPENSER
CNG DISPENSER
LNG
CNG
TANK LORRY TRAILER
LP LNG PUMPTC-34TC-34.2
HP LNG PUMPP2KX9SGV
CNG Station operations• Fuel is supplied via local pipeline• Gas is compressed and stored in ASME tubes/bottles• Vehicles are fueled by pressure differential from the
storage banks/compressor
4 Fuel Supply Pumps – LNG
• The TC-34.2 pump has been specifically designed for operation in LNG with the most efficient set of hydraulic designs and lowest NPSHR in the industry. Key features of the design are the permanent magnet motors that are highly efficient and compact thus reducing the size and weight of the pump and wide operational capability through the use of a VFD. The modular multi-stage design allows to reach very high differential heads and the ratings vary from 2.5 kw to 250 kw.
tC-34.2 puMpS
Performance Map
Features & Benefits• Light weight and compact• Small diameter lower cost in-tank pumpwell installation• All parts are precision machined from aluminum forgings• No castings, no defects, no re-pours, on time delivery• Lower NPSHR, less than 0.5 M• Dynamic thrust balance drum – long bearing life
Applications • LNG feed to high pressure (L/CNG) pump• LNG feed to natural gas engines• LNG storage tank refilling• LNG circulation • Storage transfer and pipeline injection for
LNG peak shaving plants• LNG bunkering
10
100
1000
1 10 100 1000
Diff
eren
tial H
ead
– fe
et
3.0
30.5
304.8
Diff
eren
tial H
ead
– m
eter
s
Flow Rate – gpm
H210
G210
H170
G170
G145F145
D145
E145
D125
C125
D90
C90
3.8 38 379 3785
Flow Rate – lpm
Vacuum jacketed sump available
(optional)MSP-34.2 in-tank
• Negligible bearing thrust loading is accomplished through the use of an active thrust balancing system resulting in extended bearing life. An innovative arrangement ensures wetted bearings and motor cooling during start up.
• The pump is designed to operate in a sump or in-tank in a pump well and is available with a removal system that allows the pump to be removed from the LNG tank without having to empty the contents.