Using LNG Expanders for Optimised LNG Production

Transcription

1 LNG Plant Optimisation September 20-21, 2005 Sheraton Imperial Hotel Kuala Lumpur, Malaysia Using LNG Expanders for Optimised LNG Production Joel V. Madison President Ebara International Corporation USA

2 Joel V. Madison is President of Ebara International Corporation, Cryodynamics Division, Nevada, USA. He graduated from Pennsylvania State University, USA with a Master s s Degree in Mechanical and Aerospace Engineering.

3 Oman LNG

4 Oman LNG Liquefaction Process Trains 1 and 2

5 Typical LNG Plant Process Scheme

6 LNG Expander Economics LNG Expander Power Output Increase in LNG Output Increase in Revenue For LNG Price $266.67/ton kw Tons/year $/year ,000 30,000 60, ,000 16,000 1,600,000 8,000,000 16,000,000 32,000,000 Reference: Gilbert Habets, Shell International Oil Products B.V. et al.: "Economics of Cryogenic Turbine Expanders" The International Journal of Hydrocarbon Engineering, December 1998

7 MLNG Dua Malaysia First generation LNG expander with air- cooled generator and rotating shaft seal 1996 (Flowserve Corp.)

8 NLNG Nigeria First generation LNG and HMR expanders with air-cooled generator and rotating shaft seal 1999 (Flowserve Corp.)

9 Comparison in AIR COOLED GENERATOR size and weight between first 7000 mm SEAL, COUPLING & THRUST BEARING and second generation LNG TURBINE SUBMERGED TURBINE GENERATOR 3370 mm expanders First Generation Power Output = 900 kw Total Weight = 27,000 kg. (Flowserve Corp.) Second Generation Power Output = 1000kW Total Weight = 7,600 kg. (Ebara Intl. Corp.)

10 Ebara Intl. Corp. Second Generation Three-Stage Liquid Expander Oman LNG, June 1999 developed in cooperation with Gilbert Habets, Shell International Oil Products B.V.

11 MLNG Tiga, Malaysia December 2000 Second-generation LNG expander with submerged generator and variable speed (Ebara Intl. Corp.)

12 Generator Rotor Generator Stator Thrust Equalization Mechanism (TEM) Fixed Geometry Inlet Guide Vanes Runners

13 Three-Stage Liquid Expander for Ras Laffan LNG 2002 (Ebara Intl. Corp.)

14 Since the early days of the cryogenic technology it has been known that two-phase cryogenic expanders improve thermodynamic efficiency of gas liquefaction processes. Only in recent years is the technology available to operate reliably liquid-vapour LNG expanders

15 What is Two-Phase Expansion?

16 Reference for the following four slides: Improved LNG Production Process Using Two-Phase Expanders Christian Fischer Shell Sakhalin Energy SE-LNG Yokohama, Japan Hans E Kimmel Ebara International Corporation Sparks, Nevada, USA hkimmel@ebaraintl.com 5th Annual 'Rome' World LNG Summit 1 st st - 3 rd December 2004, Rome, Italy The Strategic Implications of Technological Advance The CWC Group

17 Sgl & Two Ph

18 Fig 1 Curve

19 Fig 2 Curve

20 Fig 3 Curve

21 Two-Phase Expander with Jet Exducer

22 Hydraulic Assembly

23 Two-Phase Jet Exducer

24 Two-Phase Jet Exducer

25 Krio Polish Oil & Gas Two-Phase Exducer Turbine 2003

26 January 2003 Installation of Two-Phase Expander at Krio Polish Oil & Gas Odolanow, Poland

27 Generator Rotor Generator Stator Thrust Equalization Mechanism (TEM) Fixed Geometry Inlet Guide Vanes Runners

28 Two-Phase Expander with Jet Exducer

29 Two-Phase Expander with Compact Assembly Configuration

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32 Two-Phase Expander with Compact Assembly Configuration

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35 Operating Conditions Tf H C-3 Flow rate : kg/s Intake capacity : dm 3 /s Intake capacity : m 3 /hr Inlet pressure : bar abs Inlet density : kg/m Inlet temperature : C Outlet pressure : bar abs 2.7 P of Turbine : bar H of Turbine : m Number of Stages 2 Operating Conditions Tf H C-3 Flow rate : kg/s Intake capacity : dm 3 /s Intake capacity : m 3 /hr Inlet pressure : bar abs Inlet density : kg/m Inlet temperature : C Outlet pressure : bar abs 1.01 P of Turbine : bar H of Turbine : m Number of Stages 2

36 Operating Conditions Tf H C-3 Operational Speed :rpm 3000 Intake capacity :m 3 /hr H of Turbine : m Inlet density : kg/m Power Hydraulic In : kw 674 Efficiency Turbine : % 85 Efficiency Generator : % 96.5 Power Out Gen. : kw 553 BTU Removal/Hr : BTU/hr 1,888,180 Predicted Expander Eff: % 82 Reclaimed Cap. : dm 3 /s 2.41 Capacity Increase : % 0.97 Reclaimed Cap.: tons/day Revenue Incr. : $/Year $ 8,814,820 Operating Conditions Tf H C-3 Operational Speed :rpm 3000 Intake capacity :m 3 /hr H of Turbine : m Inlet density : kg/m Power Hydraulic In : kw 716 Efficiency Turbine : % 94 Efficiency Generator : % 96.5 Power Out Gen. : kw 652 BTU Removal/Hr : BTU/hr 2,226,208 Predicted Expander Eff: % 91 Reclaimed Cap. : dm 3 /s 2.84 Capacity Increase : % 1.14 Reclaimed Cap.: tons/day Revenue Incr. : $/Year $ 10,388,220

37 This presentation is based on the following publications: G.L.G.M. Habets, Shell International Oil Products B.V. H.E.Kimmel, Ebara International Corporation "Economics of Cryogenic Turbine Expanders" The International Journal of Hydrocarbon Engineering, Dec GG.L.G.M. Habets, Shell International Oil Products B.V. H.E.Kimmel, Ebara International Corporation Development of a Hydraulic Turbine in Liquefied Natural Gas 7 th European Congress on Fluid Machinery, The Hague, The Netherlands, April 1999 R.J.A.N. van den Handel, Shell International Oil Products B.V. H.E.Kimmel, Ebara International Corporation A New Generation of Liquid Expanders in Operation at Oman LNG GASTECH 2000, Houston, Texas, USA, November 2000 Munir Amsyari, Zudiharto, P.T.Badak, Indonesia J.V.Madison, H.E.Kimmel, Ebara International Corporation LNG Expander for Extended Operating Range in Large-Scale Liquefaction Trains AIChE 2005 Spring National Meeting, April 10-14, Atlanta, Georgia, USA

38 This power point presentation can be downloaded from the following website