LNG BUNKERING LNG AS A SHIP S FUEL GREEN SHIP TECHNOLOGY, OSLO 23-MAR Carriers & Offshore Units. Jürgen Harperscheidt Sales Manager

Transcription

1 LNG BUNKERING LNG AS A SHIP S FUEL GREEN SHIP TECHNOLOGY, OSLO 23-MAR-2011 Carriers & Offshore Units Jürgen Harperscheidt Sales Manager

2 CONTENT TGE Company Profile Small LNG carriers as part of a bunkering infrastructure Basic requirements for bunkering LNG tanks and insulation BOG management Conclusions 2

3 Business activities and expertise Cargo handling systems and cargo tanks for Gas Carriers LPG carriers, CO 2 carriers Ethylene carriers LNG carriers Cargo handling systems for Offshore units FSO/FPSO for LPG FSRU and FPSO for LNG CO 2 liquefaction, storage and offloading units Fuel Gas Systems for seagoing vessels Fuel gas supply systems Fuel gas tanks RoRo, Container, Ferries, Bunker Barges, Bunker Boats LNG fuel storage systems 3

4 CONTENT TGE Company Profile Small LNG carriers as part of a bunkering infrastructure Basic requirements for bunkering LNG tanks and insulation BOG management Conclusions 4

5 Small LNG carriers 19-May-2010 Coral Methane loading at Zeebrugge, First loading of a small carrier at a large import terminal. 5

6 Coral Methane Dual fuel propulsion system HFO GAS HFO GAS 2 x thrusters for optimum manoeuvrability HFO generator sets: 2 x 3,685 kw Gas generator sets: 2 x 2,280 kw Fuel gas supply: 0.9 t/h gas to gen 5 bar; 5-40 C Forced vaporising mode and two BOG modes Heating medium: thermal oil / water-glycol 6

7 Small LNG Carriers 10 to 10,000 m³ cylindrical tanks 100 to 20,000 m³ bilobe tanks (patented supports) Ship sizes 700 to 75,000 m³ have been studied Tank pressure 2.7 to 4.0 barg BOG handling by pressure increase or fuel gas consumption 7

8 CONTENT TGE Company Profile Small LNG carriers as part of a bunkering infrastructure Basic requirements for bunkering LNG tanks and insulation BOG management Conclusions 8

9 Bunkering Requirements for future operations: High loading rates due to tight time schedule Large total amount of LNG for larger vessels Safe but easy handling of equipment Bunkering during cargo operations This will only be possible with bunker vessels (small LNG carriers as above) coming alongside Hydraulic/mechanic handling of heavy equipment like dry-break coupling Regulations and standards for the bunker interface and related operations are under preparation by several international working groups 9

10 Bunkering Pioneer Knutsen and Coral Methane during LNG transfer, LNG bunkering could look like this in near future (Anthony Veder, Gasnor). 10

11 Equipment for bunker vessels LNG Pumps (intank or deepwell) for different bunkering rates loading manifold mechanical/hydraulical system to handle bunker hoses or arms with coupling dry-break emergency release coupling vapour return connection optional transfer compressor signal interface (including ESD) possible additional services: inerting with Nitrogen, tank purging and cooling with NG/LNG, tank emptying and warming-up other bunker fuels 11

12 Bunkering (Artist impression) 12

13 CONTENT TGE Company Profile Small LNG carriers as part of a bunkering infrastructure Basic requirements for bunkering LNG tanks and insulation BOG management Conclusions 13

14 LNG tank types Tank type Concept Pressure Partial Filling Membrane; Integrated in hull < 0.25 No Semi- barg Some Yes Membrane (max. 0.7) 2nd Barrier Yes Dis-Advantages Very sensitive against pressure variations; Pressure holding necessary; Not gastight Advantages Can be adapted to hull Independent type A B C prismatic with straight planes, adapted to hull shape prismatic with straight planes, adapted to hull shape spherical (Moss) Independent pressure vessel < 0.7 barg Yes Yes Pressure holding necessary; Very voluminous vent system due to low pressure < 0.7 barg Yes Partly Pressure holding necessary; Very voluminous vent system due to low pressure Can be approx. adapted to hull shape Can be approx. adapted to hull shape < 0.7 barg Yes Yes Pressure holding necessary; Very reliable system Space requirements > 2 bar Yes No* Space requirements - very solid design volume factor 3-4 compared - Flexible pressure with HFO/MDO - Easy installation - No leakages occurred - No maintenance needed * as per IGC code, under discussion for IGF code 14

15 TGE s Tank fabrication expertise Fabrication 8,200 m³ and 8,400 m³ Bilobe and Cylindrical Tanks for Ethylene Service Fabrication Bilobe Cargotanks for 5x22,000 m³ Ethylene Carriers Transportation of Stainless Steel cargo tanks for a 7,500 m³ LNG carrier on a heavy lift carrier to a shipyard in Europe Cargo tanks type A for a 23,000 m³ Fully Refrigerated LPG Carrier 15

16 Typ-C Tank installation Installation of 4000 m³ / 400 t cylindrical tank Ethylene Carriers 16

17 Foam insulation vs. vacuum Foam insulation Vacuum insulation size shape cylindrical < 10,000 cbm bilobe < 20,000 cbm cylindrical, bilobe, conical < 700 cbm per tank cylindrical outlet all connections on top min. 1 bottom outlet boil-off rate 0.2 to 0.6 % per day special panels better below 0.1 % per day in-tank equipment e. g. pumps, heaters no manhole (usually) inspection 5 years in-tank no manhole (usually) 17

18 CONTENT TGE Company Profile Small LNG carriers as part of a bunkering infrastructure Basic requirements for bunkering LNG tanks and insulation BOG management Conclusions 18

19 BOG management boil-off gas (BOG) will occur based on heat ingress amount in relation to outer temperature, insulation efficiency and surface area boil-off rate usually in weight-% of maximum filling per day, about % for large carriers small tanks have bad surface to volume ratio resulting in high boil-off rates, 0.2 to 0.6 % per day bunker vessel should have LNG fired engines and generators to burn BOG additional BOG from vapour return will increase tank pressure alternatives: Gas Combustion Unit (GCU) or reliquefaction (both CAPEX, space, weight!) 19

20 Tank pressure of type C tank No consumption 20

21 CONTENT TGE Company Profile Small LNG carriers as part of a bunkering infrastructure Basic requirements for bunkering LNG tanks and insulation BOG management Conclusions 21

22 CONCLUSIONS Small LNG carriers are part of an existing and quickly developing market with LNG bunkering infrastructure as one driver. Technical solutions for ship design as well as equipment for bunker vessels/barges are available. Standards and regulations for LNG bunkering are under development but not fixed yet. Investment in LNG bunker infrastructure is the major challenge to enhance the use of LNG as fuel. 22

23 Thank you for your kind attention 23