lng conversion (General)

Transcription

1 lng conversion (General) 1 Wärtsilä Jens Häggblom

2 Content DF conversion portfolio and references Reasons for conversion DF conversion in practice LNG storage, process and bunkering system (Wärtsilä LNGPac) Engine conversion Sales project development & Conversion time schedule Training & Operation Case study (Bit Viking) Whom to contact regarding inquiries 2 Wärtsilä Jens Häggblom

3 DF conversion portfolio & references 3 Wärtsilä Jens Häggblom

4 Available DF-conversions Wärtsilä Vasa 32/32LN W32DF Speed range: 720 / 750 rpm Cylinder output range: 335 / 350 kw Wärtsilä 32 W34DF Speed range: 720 / 750 rpm Cylinder output range: 435 / 450 / 500 kw Wärtsilä 46 W50DF Speed range: 500 / 514 rpm Cylinder output range: 950 / 975 kw 4 Wärtsilä Jens Häggblom

5 Dual-Fuel applications - References Power Plants Merchant Offshore Cruise and Ferry Navy Others DF Power Plant 57 installations 225 engines Online since1997 LNGC 121 vessels 481 engines Conversion 1 Chem. Tanker 2 engines conv. Complete gas train Complete design PSVs/FPSOs 20 vessels 93 engines Online from 1994 New orders: Harvey Gulf; the first 5 LNG-PSV to be operated in the Gulf of Mexico! LNG ferries 1 vessels 4 engines per vessel Complete gas train 2800 passengers In service early 2013 Coastal Patrol DF-propulsion DF main and auxiliary engines TUG 2 vessel 2 engines each Mechanical drive FPSO 1 vessel 6*18V50DF 6 segments 210 installations > running hours 10 April 2013

6 Reasons for conversion 6 Wärtsilä Jens Häggblom

7 Reasons to convert on a typical 5-year period Fuel price spread CAPEX OPEX ratio (Source: Joachim Grieg & Co - LNG Fuelled Ships Conference, Bergen, 2012) 7 Wärtsilä Jens Häggblom

8 Reasons to convert on a typical 5-year period Environmental aspects Reduced NOx, eliminated SOx, Lower CO 2, PM Prepared for future legislation Maintenance cycle shifted Converted / new engine running hours reset Increased second hand value of vessel New state of the art technology onboard 8 Wärtsilä Jens Häggblom

9 Payback example Ropax ~40 MW -Average load 50% -Fuel cons. 20,000 t/a -Average load 80% -Fuel cons. 30,000 t/a 9 Wärtsilä Jens Häggblom

10 Suitable ship types Tankers Roro RoPax (LNG storage capacity, routes, bunkering interval) Smaller ferries 10 Wärtsilä Jens Häggblom

11 When to convert or replace When to convert Bigger bore Ease of access? When to replace Smaller bore Ease of access? 11 Wärtsilä Jens Häggblom

12 DF conversion in practice 12 Wärtsilä Jens Häggblom

13 Initial questions (Wärtsilä can assist) Is LNG available? How will the bunkering be done and where? Any time restrictions or other restrictions? How much storage capacity is needed? Required autonomy (bunkering interval)? Operating profile of the vessel / fuel consumption? Is there space onboard for LNG storage system and for new auxiliary equipment? Placement outside on deck is easiest Inside placement also possible -> stricter requirements How is the vessel stability affected? Heavy equipment What is the intended time schedule for the conversion? A minimum of 12 months lead time required for engineering, design and manufacturing starting from date of order. Offhire depending on the installation. Wärtsilä can help estimating required time for the conversion. 13 Wärtsilä Jens Häggblom

14 storage, bunkering and LNG storage, process equipment (Wärtsilä LNGPac) ) LNG 14 Wärtsilä Jens Häggblom

15 What is Wärtsilä LNGPac? A complete and modularized solution for LNG fuelled ships LNG tank (pressurized - IMO type C) Bunker station with valves and connections to shore Process skid (valves and evaporators) Gas Valve Unit (included in engine scope) Automation and controls Gas detection system (offered separately) Operating manual and class approval 15 Wärtsilä Jens Häggblom

16 LNGPac dimensions 16 Wärtsilä Jens Häggblom

17 Engine conversion 17 Wärtsilä Jens Häggblom

18 DF conversion Engine parts which will be exchanged Cylinder heads Connecting rods (upper part) Cylinder liner & antipolishing ring Pistons & piston rings 18 Wärtsilä Jens Häggblom Camshaft pieces for DF Miller valve timing Control system UNIC Turbocharger Dual-needle injection valve

19 DF conversion Components added on the engine Exhaust gas waste gate Gas rail pipe Gas admission valves 19 Wärtsilä Jens Häggblom Pilot fuel system: Pilot fuel oil filter Common rail piping Pilot fuel oil pump

20 External systems 20 Wärtsilä Jens Häggblom

21 Typical changes in external FO system Pilot fuel circuit added. 21 Wärtsilä Jens Häggblom

22 LNG system LNG tank (pressurized - IMO type C) + tank room Gas valve unit Bunker station with valves and connections to shore Water/glycol system Vacuum insulated pipes (liquid LNG) Gas detection system 22 Wärtsilä Jens Häggblom

23 Engine room with gas 23 Wärtsilä Jens Häggblom

24 Further system changes - LNG and NG piping - Changes in automation system - Upgrades, integration of new equipment - Exhaust system modifications, exhaust fan unit, rupture discs - Gas detection system - Propulsion control system modifications (New combinator curve) - Nitrogen system for purging gas system 24 Wärtsilä Jens Häggblom

25 Sales project development & Conversion time schedule 25 Wärtsilä Jens Häggblom

26 Marine LNG sales project development RFQ RFQ from client Leads / Opportunities developed with the client Pre-study Concept study from GA drawings and data provided by client. Budgetary proposal for equipment delivery. GO / NO GO decision Pre-study follow up Possible ship check Possible update of budgetary proposal Preliminary time schedule GO / NO GO decision Agreement on feasibility and basic design. Feasibility Broad engineering, design work and report for determining feasibility. Engineering package for submittal to the flag authorities and class society for concept approval GO / NO GO decision Basic design Build plan and schedule in cooperation with client. Engineering deliverables needed to secure a shipyard contract. Definition of scope of supply Equipment delivery Extended equipment delivery Turnkey Presentation of proposal Submittal and presentation of detailed proposal and contract draft. 26 Wärtsilä Jens Häggblom

27 Conversion lead time schedule example* LNG conversion time schedule (Typical for a single main engine merchant vessel, starting from date of order) [Weeks] Engineering, design, planning Manufacturing Piping, cabling, equipment installation, hull modifications Duration Engine conversion Comissioning test run & sea trial *Case specific. Wärtsilä can help with estimating time schedule. 27 Wärtsilä Jens Häggblom

28 Training & operation 28 Wärtsilä Jens Häggblom

29 Operation of DF engines vs. trad. diesel engines Maintainability and crewing Dual-fuel engines can be operated by regular diesel engine crews with decent training. No exceptional skills are required as no high pressure steam/gas is present onboard. 29 Wärtsilä Jens Häggblom

30 Training provided by Wärtsilä Land & Sea Academy A All ship crew B Deck + engine room crew C Deck + engine room crew Generic Specialised (Equipment) Specialised (Automation system) Gas safety + IMO Gas terminal operations on/offshore Bunkering process, gas pipe & valve system, LNG storage and gas handling, basic thermodynamics, process tempering control LNGPac concept system layout and function Diesel to DF conversion, exchanged and added parts DF Engine training courses, mechanical & automation LNGPac Gas valve unit DF engine Torque measuring system Propulsion control system 30 Wärtsilä Jens Häggblom

31 Bit Viking - Conversion and operational experience- 31 Wärtsilä Jens Häggblom

32 Today! 32 Wärtsilä Jens Häggblom

33 Background: main engine conversion before 2 x W6L46B 5850 kw each CPP PTO 1500 kw WÄRTSILÄ 8L kw CPP WÄRTSILÄ 8L kw PTO 1500 kw after 2 x W6L50DF 5700 kw each 33 Wärtsilä Jens Häggblom

34 LNGPac production and transportation 34 Wärtsilä Jens Häggblom

35 LNGPac onboard installation Tanks Tank room Bunkering stations Vent masts Drip trays 35 Wärtsilä Jens Häggblom

36 Single-wall piping on weather deck 1. Single-wall piping, thermally insulated, installed on the weather deck. 2. Work finalized with damage protection 36 Wärtsilä Jens Häggblom

37 Single and Double-wall pipe Double wall pipe Annular space equipped with mechanical under pressure ventilation (capacity of at least 30 air changes per hour). Single wall pipe Pipe on open-air deck thermally insulated Inner pipe Outer pipe 37 Wärtsilä Jens Häggblom

38 Field experience 38 Wärtsilä Jens Häggblom

39 DF mechanical propulsion - Operational experience Date Time 22:15 Vessel speed 14,3 knots Latitude N Longitude E 6 4' Heading 100 Wind speed 10,5 m/s Wind direction 290 Wave height (avg.)4-5 m Draught 8m Waves direction Wärtsilä Jens Häggblom NORWAY

40 DF mechanical propulsion - Operational experience rpm 85% 83% Engine load Engine speed Engine load [%] Engine speed [rpm] rpm 37% Time [s] 8 s 0 40 Wärtsilä Jens Häggblom

41 DF mechanical propulsion - Operational experience The vessel is able to run constantly and continuously in gas mode (99% of operating time) Bunkering every second week or less. Trendsetter for high speed bunkering applications (430 m³/h) Engine performance has never been a limitation for vessel operations Load variations between 37% and 83% MCR in 8 seconds Average load 65% MCR with 79% Propeller Pitch Highest wind speed encountered 25 m/s 41 Wärtsilä Jens Häggblom

42 Contact Whom should I contact in Wärtsilä regarding LNG conversions? Your account manager Services Project Proposals Markus Ljungkvist ( markus.ljungkvist@wartsila.com ) Jens Häggblom ( jens.haggblom@wartsila.com ) Joel Knif ( joel.knif@wartsila.com ) 42 Wärtsilä

43 THANK YOU! 43 Wärtsilä Jens Häggblom