Environmental Control Solutions

Transcription

1 Environmental Control Solutions At the forefront of Technology Fabio Dinale

2 What are our customers asking for? BETTER PERFORMANCE GREATER RELIABILITY EMISSIONS COMPLIANCE PROFITABLE GROWTH Leading Efficiency, Lower Emissions, Better Economics

3 Smarter. Cleaner. Steam Power. Steam Power Systems has accelerated the development of leading efficiency, lower emission technologies to deliver more value to customers. Driving towards 50% efficiency Technology Advancements 1½ % points more efficient & 3% lower emissions compared to today s best Digital Capabilities Delivers up to 1 ½% more power over the life of a plant Environmental Controls Able to lower emissions by 70% more than the world s most stringent emission standards

4 Environmental Controls LOWER ENVIRONMENTAL FOOTPRINT 500 GW eq. & 5000 industry systems POLLUTANT REMOVAL RATES REDUCED COMPLIANCE COST More than 90 years of experience FLEXIBILITY & RELIABILITY Innovation, flexibility & robustness SO x >98% NO x 95% Particulates 99.9% TECHNOLOGY READY TO RESPOND TO INCREASING ENVIRONMENTAL STANDARDS

5 GE SIR for ESPs Switched Integrated Rectifier High voltage power supply combining a transformer/hv rectifier (T/R) and control system for energizing and controlling electrostatic precipitators (ESPs) Conventional technology T/R set High frequency technology SIR unit Weight Input ph. Pw. factor Ripple Arc shtdwn 1,200-3,000 kg (cabinet incl.) 1-phase cos φ = 0, kg 3-phase cos φ = 0,92 30% 10 ms Thyristor 50 Hz <1% 10 μs Transistor KHz Key Reference: 32 SIRs 70 kv / 800 ma -300k$/y OPEX on energy savings SO 3 conditioning system removed: additional savings in operation & maintenance Possibility to comply to future Mercure limitations 11% stack opacity reduced to 1.6% Up to 60% decrease on ESP dust emissions Compact size, no cabinet required Smaller sized cables Installation & comm. in ½ day vs. several days for conventional T/R Efficiency >95% Modular design & standardized spare parts minimal downtimes

6 GE Mega-FF Technology Optipulse & Optipow Optimized valves and pulsing technology allowing uniform pressure along the bags resulting in more effective cleaning and longer bag life Gravimetric flow & nozzle design Unique gas distribution arrangement in each compartment, with flow covering the full cross section area and following larger radius on turns Manjung 4, 1000 Mwe ultra-supercritical, Malaysia PPS/PPS w. PTFE treatment bags, 10 m long. Stack PM emission 1.6 mg/nm3 dg at guarant. test. Lomellina Energia WtE Plant, Italy Key References 1600 PI-PTFE/PTFE w. intrinsic PTFE coating bags, 9 m long. Stack PM emission always < 1 mg/nm3 dg. Up to 10% savings on CAPEX vs designs using shorter bags Lower emission guarantees Reduced footprint Reduced bag wear on bag top Enhanced ash transport to hoppers during cleaning Improved gas distribution and gravimetric flow in bag nests

7 GE ADIS & IsoSwirl TM for SCR Ammonia Direct Injection System Injects aqueous ammonia via spray nozzles directly into the hot flue gas in the flue gas ducts without any external conditioning (evaporation, dilutions) IsoSwirl TM Global mixing system guarantying a good mixing of gas velocity, temperature, NOx concentration and ammonia/nox ratio distributions at the catalyst inlet Boiler Outlet ADIS IsoSwirl TM SCR Key Reference: Plomin 2 SCR Total Savings -200k CAPEX -2% EPC costs -170k /y /kw CAPEX reduction from 2% to 3% of total EPC cost Global Mixer (if necessary) ADIS NH3 injection Global Mixer Rectifier Catalyst OPEX energy saving ~ 110,000/y (ref. 210 MWe Unit) No external heat required for the evaporation Reduced maintenance Smaller footprint requirements Barrier air NH3 Flow control Compressed air flow control

8 DFGD: GE LLD for NID Device for low load operation Robust design of disperser plate and mixer water lances: Movable disperser plate controlling duct opening area for sufficient gas velocity at low gas flow Dual-fluid deflector nozzles maintaining spray distribution at a wider water flow range Zilina, Slovakia Bygdoczsz, Poland Key References Reduction/elimination of flue gas recirculation Extended operating envelope for the NID Improved operation stability at low load OPEX energy savings from booster/ recirculation fan

9 DFGD: GE Hydrator for NID 2-stage axial flow hydrator Plug-flow design for high-performance hydration Improved lime-feed control New release, available for tendering. Key References OPEX savings Higher quality of hydrated lime Up to 5% reduction on lime consumption Improved availability and accessibility Reduced maintenance Hydration stage Distribution stage Mixer 1 of 4 installation arrangements

10 WFGD: 3G OST Design Spray zone advanced design Dual flow nozzles increasing SO 2 removal rate High nozzle density improving SO 2 removal & particulates emission levels PEP (wall rings) reducing SO 2 emissions > 40% at the same L/G Improved mist eliminators for higher gas velocities (up to 4.5 m/s) Craiova, Romania Rybnik, Poland Opole, Poland Key References 95% to 99+% SO x removal CAPEX reduction from 5 to 10% compared to 2 nd Generation (2G) OPEX energy savings from 10 to 20% vs. 2G Reduced maintenance costs due to fewer mechanical equipment Particulate emission reduced inside the absorber Sneakage areas Gas Velocity Profile Nozzle Location Gas Flow

11 WFGD: SulfiTrac GE Sulfite Analyzer Robust design: stainless steel casing, heavy duty HDPE outer vessel with conical bottom, inner sample container using overflow bucket concept in different sizes, and wetted electrode/ring with rotating cleaning block. Craiova, Romania Rybnik, Poland Opole, Poland Key References Size Weight Control box Probe Op. Tª Pw. Supply Signal Ø0.3m L1m ~20kg NEMA 4 rated Platinum surface -10⁰C to +70⁰C 24 VDC ~25 W 4-20 ma output, RTD Up to ~ 50% OPEX energy saving Compact size Shorter installation & comm. time High corrosion resistance Simplified operation Minimal maintenance

12 Digital Capabilities DIGITAL ENVIRONMENTAL CONTROLS Examples of applications Temperature reasoner for NID Mechanical failure detection for ESPs Automated reporting/trends for each equipment & at fleet level Feedback to NPI Advanced warning of downward trend Monitoring & alerts if KPI goes red Insights / actions to get «back to green» Push parameter changes to optimize ECS equipment based on other asset behavior Collect data to improve knowledge base Delivering better performance, greater efficiency & improved reliability over the life of the plant

13 The winning equation leading EFFICIENCY + lower EMISSIONS = better ECONOMICS 1% point efficiency improvement 22MW Power Output $30 Million NPV Over Asset Life 67,000 Tons Coal Consumption 120,000 Tons CO 2 Emissions Per year figures for a 1000 MW plant, ~3,000,000 tons coal consumption Full plant optimization Environmental Compliance Reduced CO2 Emissions Better Air Quality Local Project Support Lower lifecycle cost Profitable growth Improved delivery time Access to financing DELIVERING MORE VALUE FOR OUR CUSTOMERS 13

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