EXHAUST GAS SCRUBBING SYSTEMS - Choisir une langue

1 EXHAUST GAS SCRUBBING SYSTEMS . TECHNICAL AND ECONOMICAL ASPECTS. MARITIME STAKEHOLDER EVENT, BRUSSELS 1ST JUNE 2011. B-M KULLAS-NYMAN. W RTSIL . 1 / 21 W rtsil 11 March 2011 : DBAB285337 Revision: g Status: Finalised Environmental challenge NOx SOx PM CO2. Acid rains Acid rains Harming humans Greenhouse and animals gas Tier II (2011) (2012) Along with SOx Under evaluation Tier III (2016) ECA (2015) reduction by IMO. ). 2 . / 21 W rtsil : DBAB285337 Revision: g Status: Finalised W rtsil . W rtsil freshwater scrubber test unit (MT Suula). Type Fresh water NaOH scrubber. Application Auxiliary engine W rtsil 4L20. Purpose of testing Performance mapping. Certification experience. Operational feedback. Status Testing 2008-2010. First marine scrubber certificate 3 / 21 W rtsil 11 March 2011 : DBAB285337 Revision: g Status: Finalised W rtsil freshwater scrubber test unit (MT Suula). EXHAUST gas out Water spray Packed bed EXHAUST gas in Water + NaOH.

2 Water + Sulphates Packed bed spray scrubber 4 / 21 W rtsil 11 March 2011 : DBAB285337 Revision: g Status: Finalised Freshwater scrubber layout Freshwater ~ m3/MWh ~25 m3/MWh Bleed-off ~ m3/MWh Sludge ~ kg/MWh Effluent ~ m3/MWh 5 / 21 W rtsil 11 March 2011 : DBAB285337 Revision: g Status: Finalised Bleed-off treatment Sludge Disposal: In port, never SCRUBBING Sludge overboard water circulation Storage In ship's sludge . tank, possibly in the existing tank with separator and other sludge Process tank Bleed-off Effluent Effluent A cleaned bleed-off within and beyond IMO requirements Disposal Can be discharged overboard at open sea Storage Can be stored in a buffer tank with possibility to operate in zero discharge mode Permits cleaning of bleed-off anytime, also when scrubber is not operating. 6 / 21 W rtsil : DBAB285337 Revision: g Status: Finalised Typical W rtsil scrubber performance and operation data Performance SOx reduction > 97%. Fuel Up to S content Operation Power consumption of actual Power NaOH price 50 250 $/m3.

3 NaOH consumption Approx. 130 litres /h (~7% of SFOC). Installation example: Dimensions / Weight in 6m / 10 tons 10 MW, 85% MCR operation S, SCRUBBING Fresh water consumption Approx. 1 m3/ h to % level ISO conditions Effluent* sea discharge Approx. < 1 m3/ h Sea water (cooling) Approx. 100 m3/ h * Cleaned bleed-off extracted from SCRUBBING water to remove contaminants 7 / 21 W rtsil 11 March 2011 : DBAB285337 Revision: g Status: Finalised Theoretical 50% NaOH solution consumption 900. S cleaned to correspond to S. 800 S cleaned to correspond to S. NaOH consumption (l/h). S cleaned to correspond to S. 700. 600. 500. 400. 300. 200. 100. 0. 0 5 000 10 000 15 000 20 000 25 000 30 000 35 000 40 000. Operating power (kW). 8 / 21 W rtsil 11 March 2011 : DBAB285337 Revision: g Status: Finalised Public Test Report available on Project background Legislation review Emission results Effluent results Sludge results And much more . 9 / 21 W rtsil 11 March 2011 : DBAB285337 Revision: g Status: Finalised W rtsil FWS options Main stream scrubber One scrubber unit for each engine Not suitable for fuel oil fired boilers Integrated scrubber One scrubber unit for several engines and/or oil fired boilers Suitable for fuel oil fired boilers 10 / 21 W rtsil 11 March 2011 : DBAB285337 Revision: g Status: Finalised W rtsil Integrated Scrubber Benefits Completely avoids increased EXHAUST gas back pressure Minimizes the amount of equipment Integrated Silencers scrubber Main features One common unit with suction fans for all EXHAUST gas combustion units onboard boilers Suction branches with shut-off valves from all EXHAUST gas and flue gas pipes Fan redundancy embedded Constant under-pressure prevents undue flow of Engines gases Oil-fired boiler 11 / 21 W rtsil 11 March 2011 : DBAB285337 Revision: g Status.

4 Finalised References A full commercial project Containerships VII, scrubber delivery in August 2011. Main stream scrubber for W rtsil 7L64 main engine, 12600kW. Vessel built 2002 (Sietas, Hamburg). Operating area Baltic Sea and North Sea Finnish flag, classification society GL. 12 / 21 W rtsil : DBAB285337 Revision: g Status: Finalised Containerships VII. A full commercial project Turn-key delivery: Equipment Installation, piping, cabling Interfaces to existing SYSTEMS Commissioning Performance guarantee Class approval Certification Documentation Customer training 13 / 21 W rtsil : DBAB285337 Revision: g Status: Finalised SCRUBBER ECONOMICS. 14 / 21 W rtsil 11 March 2011 : DBAB285337 Revision: g Status: Finalised Parameters affecting the scrubber economics Equipment on board to cover Main engine(s). Auxiliary engine(s). Boiler(s). Vessel operation and routes Operation profile and fuel oil consumption Number of hours in/out of SECA waters Pricing of consumables HFO vs.

5 MGO price NaOH price Current configuration Existing fresh water capacity Ship design layout Tank arrangement Available space Elevation 15 / 21 W rtsil 11 March 2011 : DBAB285337 Revision: g Status: Finalised Fuel prices, Rotterdam = 140 700 $/ton MGO - HFO. Updated 12 April 2011. Source: / 21 W rtsil : DBAB285337 Revision: g Status: Finalised Fuel and Scrubber Operating Costs 250. 200. USD/MWh 150. 100. 50. 0. HFO 403 $/ton (Rotterdam ) HFO 588 $/ton (Rotterdam ). MGO 614 $/ton (Rotterdam ) MGO 1,290 $/ton (Rotterdam ). SCRUBBING cost with 2,7% S in fuel: SCRUBBING cost with 2,7% S in fuel: 6,2 $/MWh for caustic soda, pumping, 6,7 $/MWh for caustic soda, pumping, maintenance, water) maintenance, water). 17 / 21 W rtsil : DBAB285337 Revision: g Status: Finalised Scrubber operating cost saving and payback time Large ship Scrubber operation cost saving and payback time 1,2. 15 000. 1,1. Operating cost savings [1000 / year]. 1,0. 13 000. Payback time [years].

6 0,9. 11 000 0,8. Summer 2008 0,7. 9 000. 0,6. 0,5. 7 000. 0,4. 5 000 0,3. 300 350 400 450 500 550 600 650 700 750 800 850 900. Fuel price difference (MGO-HFO) [USD/t]. / 21 W rtsil : DBAB285337 Revision: g Status: Finalised CONCLUSIONS. 19 / 21 W rtsil 11 March 2011 : DBAB285337 Revision: g Status: Finalised SOx SCRUBBING advantages SOx- SCRUBBING is the most economical way to comply with IMO. regulation regarding SOx (Regulation 14). In SOx Emission Control Areas the cost saving is immediate. In 2015. the cost savings will be dramatic W rtsil freshwater scrubber solutions are fit for new buildings and retrofits, for any engine and boiler brands The scrubber solution is ready 20 / 21 W rtsil 11 March 2011 : DBAB285337 Revision: g Status: Finalised 21 . / 21 W rtsil : DBAB285337 Revision: g Status: Finalised W rtsil.