Natural Gas Purification for Floating LNG Production March 2013
Natural Gas Purification for FLNG Production Hollow Fiber Contactor Technology >Enables gas processing for floating LNG platforms where stringent gas quality is combined with compact configurations >Also can be used in natural gas pipeline applications Ideal for stranded gas locations, permafrost environment, construction in remote areas >In addition, applicable to pre- and postcombustion carbon capture 2
What is a Hollow Fiber Contactor? High-surface-area contacting device that facilitates mass transfer > Liquid on one side, gas on other side > Fibers do not wet out in contact with liquid > CO 2 reacts into the solvent, CH 4 dissolved to a much lesser extent > Driving force is the difference in partial pressures of CO 2 PCO 2 (g)>pco 2 (l), PCO 2 (l) via Henry s Law Constant ~0 3
Technical Advantages Specific surface Volumetric mass transfer Gas-liquid Contactor area (cm 2 /cm 3 ) coefficient, (sec) -1 Packed column (countercurrent) 0.1 3.5 0.0004 0.07 Bubble column (agitated) 1 20 0.003 0.04 Spray column 0.1 4 0.0007 0.075 Membrane Contactor 1 70 0.3 4 Hollow fiber contactor technology significantly reduces footprint and weight for the same volume of gas > Modular design and implementation for easy capacity expansion > Simplified fabrication and plant modifications > Ease of maintenance > Good aesthetics minimal visual impact on environment Conventional technology Hollow fiber contactor as absorber 4
Economic Advantages Reductions/Savings >Capital cost 35-40% >Operating costs 38% - 42% >Dry equipment weight 32% - 37% >Operating equipment weight 34% - 40% >Total operating weight 44% - 50% >Footprint requirement 40% Data by Aker Process Systems 5
GTI Partnering with PoroGen PEEK Fiber + Cartridge + Module = Separation System > PoroGen has commercial technology from polymer to system > A materials technology company commercially manufacturing products from specialty high-performance plastic PEEK (poly ether ether ketone) 6
Laboratory-Scale Contactor Module Design 7
Hollow Fiber Module Design and Scale-up to 8-Inch Commercial Scale Treated gas out Natural gas in Rich solvent out 8-inch design module Lean solvent in Design of commercial size, highpressure module completed and validated through CFD modeling Scaling up from 1 m 2 to 100 m 2 (8-inch diameter module) Established production of 8-inch module on commercial equipment Tubesheet CFD stress analysis Cartridge tubesheet for 8 x 60 -long module Equipment to produce 8-inch modules 8
Basis: CO 2 and H 2 S Removal Unit Pipeline Case 1 Column Hollow Fiber Contactor Reduction LNG Case 2 Pressure psia 1,015 1,015 Mass flow MMscfd 250 250 H 2 S ppm 60 0 CO 2 mol% 8 8 CH 4 mol% 77.5 77.5 C 2 + mol% 13.7 13.7 H 2 O mol% 0.1 0.1 N 2 mole% 0.6 0.6 Specifications CO 2 2 mol% 50 ppm H 2 S ppm 4 -- Max Allow ΔP psi 20 20 Case Study Results: Significant Reduction in Contactor Volume Pipeline Case 1 LNG Case 2 Absorber m 3 52 56 Regenerator m 3 109 158 Absorber m 3 3.4 16.5 Regenerator m 3 10.7 20 Absorber % 93 71 Regenerator % 93 90 9
Performance Results Summary > 2 vol% CO 2 in the product stream was achieved 12-inch contactor length membrane module 8 vol% CO 2 in the feed stream > ~50 ppmv CO 2 in the product stream was achieved 20-inch contactor length membrane module Lean solvent loading important to achieve 50 ppmv CO 2 2 stages may be required where the first stage reaches a 1 to 2 vol% CO 2 from an inlet of 8 vol% and the second stage brings it down to 50 ppmv > H 2 S concentration of less than 4 ppmv can also be reached simultaneously with CO 2 removal 10
GTI LABS AND FACILITIES Hollow Fiber Contactor Bench Unit >2-inch modules 0.6 MMscfd N 2 /CO 2 /H 2 S mixture >14 gallon/hr solvent flow 1000 psig, 25 to 75ºC >Moisture addition and measurement >Fully instrumented and computer controlled 11
GTI LABS AND FACILITIES High-Performance Gas Test Unit 12
Partnering Opportunity > JIP is creating design engineering documentation for a field demonstration > GTI is looking for a commercialization partner who is well-positioned to bring this technology to market For More Information Howard Meyer GTI R&D Director, Gas Processing Research 847/768-0555; cell: 847/226-0226 howard.meyer@gastechnology.org 13