Initial results from the CIUDEN CPU CO 2 Capture on oxy CFB flue gas

Transcription

1 Initial results from the CIUDEN CPU CO 2 Capture on oxy CFB flue gas 9-13 Sept l Fred Lockwood a *, Ludovic Granados a, Vanessa Turmel a, Pedro Otero b *, Miguel A. Delgado b, Manuel Gómez b a Air Liquide, b Fundación Ciudad de la Energia, *Contact persons

2 Agenda CRYOCAP TM OXY CPU roadmap CIUDEN CPU overview Review of specific technologies and results Conclusions 2 10 th Sept. 2013

3 Agenda CRYOCAP TM OXY CPU roadmap CIUDEN CPU overview Review of specific technologies and results Conclusions 3 10 th Sept. 2013

4 CRYOCAP TM OXY CPU roadmap Initial Studies Individual Technology Testing Comprehensive Pilot testing Large Scale testing CALLIDE 75 mtpd CO 2 FUTUREGEN mtpd CO 2 SASKPOWER STUDY TOTAL LACQ CIUDEN 165 / 10 mtpd CO 2 SBS 2 Dust filtration Driers mtpd CO Step-by-step approach with extensive pilot testing th Sept. 2013

5 Agenda CRYOCAP TM OXY CPU roadmap CIUDEN CPU overview Review of specific technologies and results Conclusions 5 10 th Sept. 2013

6 CIUDEN CPU Overview key facts & figures Supplied by ISOLUX using Air Liquide design and technology Warm part capacity: 160 mtpd CO 2 Cold part capacity: 10 mtpd liquid CO 2 Warm part accumulated operating hours: ~2500 Cold part accumulated operating hours: ~1500 A range of upscalable technologies 6 10 th Sept. 2013

7 CIUDEN CPU Overview Process INTEGRATED CO 2 REFRIGERATION CYCLE FLUE GAS CHILLED WATER PRODUCTION UNIT RAW WATER OFF-GAS Distillation QUENCH SCRUBBING FILTRATION Partial condensation DUST Brazed Aluminium Heat exchanger DRYING CRYOGENIC PURIFICATION SECTION LIQUID CO 2 CO 2 STORAGE Na 2 CO 3 STORAGE TO EFFLUENT TREATMENT 7 10 th Sept. 2013

8 CIUDEN CPU Overview Views Cold Box Dryer vessels Compressors Flue Gas Scrubber Filter 8 10 th Sept. 2013

9 Agenda CRYOCAP TM OXY CPU roadmap CIUDEN CPU overview Review of specific technologies and results Conclusions 9 10 th Sept. 2013

10 Flue Gas Quench and Scrubbing - process Technology Initial column for quench Scrubbing with Na 2 CO 3 solution Double plastic column for scrub Results <1ppm SO 2 Short spikes when inlet SO 2 rises 10ppm 1ppm 0.2ppm ~5min Significant dust removal Very low CO 2 loss Waste ph : ~6-7 Reagent solution ph : ~ th Sept. 2013

11 Flue Gas Quench and Scrubbing - materials Technology Corrothane TM XP coating on flue gas inlet Hastelloy for quench Plastic for scrubbing towers Results Acid condensates in inlet during transients No materials degradation on inlet/quench/scrubber and downstream due to effective scrubbing th Sept. 2013

12 Filtration Technology Regenerable pleated cartridges Regenerated by back-pulsing Target of ~10µg/Nm 3 at outlet Results Negligible dust build up Dust almost 100% removed by quench and scrubber Care must be taken in transient phases to avoid condensation th Sept. 2013

13 Dryers Technology 3 vessels cycle Regeneration using dried gas Relatively low pressure Inexpensive materials Results Dew point ~-100 C -80 Dew point ( C) Time (min) Condensates upstream: low acidity (ph ~3-4) due to limited NO to NO 2 conversion at low pressure Condensates in dryers: similar ph th Sept. 2013

14 Cold Box Technology CO 2 recovery by partial condensation O 2 and NO X removal by distillation Cold from separate CO 2 cycle Operation close to CO 2 triple point Results No issues with CO 2 freezing CO 2 purity >99.9% Very low NO X and SO X content Compound CO 2 SO 2 NO x H 2 O O 2 Purity >99.9%vol. <0.1ppmv <10ppmv <1ppmv <10ppmv th Sept. 2013

15 Agenda CRYOCAP TM OXY CPU roadmap CIUDEN CPU overview Review of specific technologies and results Conclusions th Sept. 2013

16 Conclusions Significant operating hours accumulated High level of dust and SO 2 removal by scrubber High purity liquid CO 2 production from oxycombustion gas Optimal operation close to CO 2 triple point An important step in qualifying CPU technology th Sept. 2013

17 End of presentation Thank you for your attention