FUJAIRAH FUJAIRAH 1 INDEPENDENT INDEPENDENT WATER
Transcription
FUJAIRAH FUJAIRAH 1 INDEPENDENT INDEPENDENT WATER
FUJAIRAH 1 INDEPENDENT WATER & POWER PLANT (F1 (F1 IWPP), UNITED ARAB EMIRATES Fujairah 1 Seawater Reverse Osmosis Expansion Innovative Energy and Water Resources Management Presentation by William Chang Executive Managing Director Emirates Sembcorp Water and Power Company For nearly half a century, desalination has provided a reliable source of fresh water to the growing population and economies in the Gulf region. The level of development achieved thus far by the Gulf economies would not have been possible without the parallel implementation and development of desalination. 2 Obviously, desalination is critical for sustaining life and economic growth in the Gulf region. Some countries in the Gulf rely on desalination to produce 90% or more of their drinking water, and the overall capacity installed in this region amounts to about 40% of the world’s desalinated water capacity. 3 A gradual but constant change in perspective and environmental awareness... awareness... ...is driving the technology for more efficient and environmentally friendly options and towards energy optimisation. 4 High energy footprint is the greatest drawback of desalination technology. In particular, thermal desalination technologies have been traditionally less energy efficient than Seawater Reverse Osmosis (SWRO). However, there still are cogeneration configurations where Multiple Effect Distillation (MED) can be more effective, not only on the variable O&M costs but also to improve energy efficiency and reduce energy footprint. 5 Energy Consumption of StateState-of of--the the--art Desalination Projects Desalination plants are very energy intensive! 25 4.5 1.5 Kwh/m3 of distillate produced 20 Thermal energy converted in equivalent electric energy 15 Electric power 4 10 20 5 20 10 1 10 1.5 1 3 0 MSF cogeneration 6 MED TVC cogeneration MED cogeneration 4.5 0 SWRO 3.5 0 SWRO Water Demand Forecast – Abu Dhabi Emirate 1,500 Global Demand = Emirate of Abu Dhabi System + Northern Emirates Supply 1,400 1,300 1,200 1,107 1,134 1,075 1,100 1,038 978 1,000 999 1,010 77 1,196 91 91 1,033 1,292 91 1,362 91 91 91 91 91 1,267 1,340 91 1,215 91 1,237 1,259 1,190 1,165 1,141 1,095 1,075 1,055 1,115 981 89 835 1,177 88 85 80 917 900 91 1,156 1,217 1,243 1,318 949 914 81 881 800 690 700 34 752 56 46 770 828 699 600 648 500 Auxilliaries Northern Emirates Supply 400 Western Region 300 Al Ain Abu Dhabi 200 Global Demand Note: The Global System peak differes from the sum of the individual area peaks due to the difference in demand patterns (the peak occures in different months). 100 0 2011 2012 2013 2014 2015 2016 2017 2011 – 2015 : 8% - 9% p.a. 7 Emirate of Abu Dhabi System (excluding Auxiliaries) 2018 2019 2020 2021 2022 2023 2015 – 2020 : 3% p.a. 2024 2025 2026 2027 2028 2029 2030 2011 – 2020 : 5% - 6% p.a. Electricity Network 8 Water Network 9 Commercial Structure Union Power Holding (90 90% % owned by TAQA & 10 10% % by ADWEA) Sembcorp Gulf Holding (100% owned by Sembcorp Utilities) 60% 60 % 40% 40 % Project Company Shareholder’s Agreement Sembcorp Gulf O&M Company O&M Agreement Emirates Sembcorp Water & Power Company Power & Water Purchase Agreement ADWEC 10 11 12 Sembcorp’s Global Operations across 16 Countries in in Six Continents Well-positioned in Fast-growing Emerging Markets 13 Fujairah 1 Independent Water and Power Plant (F1 (F1 IWPP) - One of the world’s largest operating hybrid desalination plants - Distinction Award winner for Desalination Deal of the Year at the 2007 Global Water Intelligence’s Global Water Awards 14 Overview of F1 F1 Plant F1 Plant location 15 Project details F1 is the 6th Independent Water and Power Plant privatised by the Abu Dhabi Water and Electricity Authority (ADWEA). Total Investment USD 1.7 Billion Financing With a syndicate of banks Contracted power capacity 760 MW Contracted water capacity 100 MIGD (454500m³/day), out of which 62.5 MIGD from thermal desalination and 37.5 MIGD from RO plant Commercial operations date 16th Mar 2009 Contracted term 20 years (Mar 2029) ”Power & Water Purchase Agreement” with ADWEC guaranteed by Abu Dhabi Govt. SWRO Expansion Project (under development) Additional 30 MIGD, targeted to be completed in 1H2015 Contracted term for SWRO expansion output 20-year water purchase agreement with ADWEC, starting from RO expansion plant commercial operation date O&M contract 20 years with Sembcorp Gulf O&M Co (100% owned by Sembcorp) Long Term Maintenance Contract (CSA) 20 years with GE for Gas turbines Current Contribution to Abu Dhabi System (based on capacity) Power: 5.3% and Water: 11% F1 Desalination & Power Technologies Power Plant Original Gas Turbines GE 9E 4*109 MW Steam Turbines Siemens 2*119 MW Extension Gas Turbine GE 9FA 1*220 MW Contractual Capacity = 760 MW Net Capacity : 790 MW Gross Capacity : 894 MW Water Plant RO plant Degremont 1* 37.5 MIGD MSF Plant Doosan 5 * 12.5 MIGD Contractual Capacity = 100 MIGD 16 F1 IWPP - Overall Plant Process 17 Hybrid MultiMulti-stage Flash (MSF) / Reverse Osmosis (RO) Technology MSF heat reject can be used for RO plant - reduces Aux power and seawater intake requirement. Cost of potabilisation is minimised as less lime is required for maintaining Total Dissolved Solids (TDS) in the potable water. The different rate of blending can be done depending on the water quality requirement. Most suitable for GCC region because of the vast variation in the summer and winter power demand. Overall Aux power consumption kWh/m3 is lower for the hybrid plants as compared to only MSF plants. 18 SWRO Expansion Project To increase desalination capacity by 30 MIGD. Targeted completion: 1H2015 Combined RO desalination capacity will make the F1 IWPP the largest RO desalination facility in the Middle East MSF Heat Reject Existing RO Plant 37.5 MIGD Dual Media Filter (DMF) MSF Existing MSF’s 62.5 MIGD DMF Seawater Dissolved Air Floatation (DAF) system 19 RO Expansion 30 MIGD SWRO Expansion Project The main innovative aspects of the new F1 IWPP SWRO Expansion Project are: Seawater Abstraction Minimise Environmental Impact Availability during Red Tide Event 20 Seawater Abstraction Ability to recover Heat Reject from the MSF plant for reuse as part of seawater feed for RO plants. Heat Reject from MSF is blended with fresh seawater intake. This integrated stream is then used as feed for both existing and new RO plants. Grey Line : Existing Flow Blue Line: New SWRO Expansion Flow 21 21 Minimise Environmental Impact The seawater requirements for the plant are deemed to be extremely low and consequently: The additional chlorine required for disinfection will be minimal. Minimise environmental impact related to the brine discharge as the Heat Reject from the MSF plant will be reused as part of the seawater feed for the SWRO plant instead being discharged into the sea - minimising brine discharge helps to reduce the negative impact of salinity changes on aquatic flora and marine life. 22 22 Availability during Red Tide Red tide is the result of an influx of a type of algae bloom that turns the water to a reddish colour. The red tide problem has been growing over the past few years in the Gulf region, adversely impacting the important sea water desalination plants by clogging up dual media filters. The SWRO Expansion Project includes the installation of a new Dissolved Air Floatation (DAF) system which will provide enhanced pre-treatment of seawater feeding into the RO plants. By improving the quality of the seawater feed, this system enhances the reliability and availability of the RO plants, particularly during red tide season. 23 23