Air Quality Control Systems Our R&D Capabilities Växjö (Sweden)

Transcription

1 Air Quality Control Systems Our R&D Capabilities Växjö (Sweden) Dedicated R&D facilities are manned by highly-skilled teams offering: Applied physics / Fluid dynamics Chemical engineering Analytical laboratory Instruments / measuring techniques Laboratory for pilot plants and flow model testing Experimental workshop for test equipment and special services Focus on providing state of the art technology

2 Alstom Power Solutions for W2E & Biomass Pulse Jet Fabric Filter Gas Distribution FF Service area Outlet duct Inlet duct Pressure tank with Optipow valves Outlet damper poppet type Gravimetric gasflow Optimised ratio bag/cage Inlet damper flap type Alstom FF Inlet Arrangement

3 Alstom Power Solutions for W2E & Biomass Pulse Jet Fabric Filter Gas Distribution Gravimetric gasflow Optimised gas/dust distribution Alstom FF Gas Distribution in Bag Nest

4 Alstom Power Solutions for W2E & Biomass Pulse Jet Fabric Filter Cleaning Principle Conventional High Pressure 5 7 Bar Alstom Advanced Low Pressure 2 3 Bar Ejected Pulse Secondary air 6 7 times the Volume of primary air flow Long pulse Slow pulse Short bag length Direct pulse Primary air expands direct Into the bag Secondary Air 1 2 times the primary Air Fast and short pulse Deep pulse enables longer bags Alstom FF Pulse Cleaning Effect

5 Alstom Power Solutions for W2E & Biomass Pulse Jet Fabric Filter Cleaning Equipments Basic Features: Pulse cleaning: Time & Diff. Pressure control Pulse Setting Time, Order & Interval Time Advanced Features: Filter Drag Control Bag Status Monitoring Valve Fault detection Equipment required: Diff. Pressure sensor Alstom EFFIC FF Controller

6 Alstom Power Solutions for W2E & Biomass ElectroStatic Precipitators Wet and Dry Electro Static Precipitators More than installation over the world (since 1939) R & D facility in Vaxjo (Sweden) Easy maintenance operation Alstom ElectroStatic Precipitators

7 Alstom Power Solutions for W2E & Biomass ElectroStatic Precipitators ESP Codes FAA Steel casing, bottom rapping FTA Steel casing, top rapping FPA Steel casing, top rapping discharge electrodes Bottom rapping collecting electrodes FAC Concrete casing, bottom rapping FTC Concrete casing, top rapping FAV Wet ESP Electrode spacing = The distance between two rows of collecting electrodes. F=250 mm J=325 mm G=275 mm K=350 mm H=300 mm L=375 nn M=400 mm F, H and M spacings are most common. Alstom ElectroStatic Precipitators

8 Alstom Power Control Systems ABC AB CD Alstom Remote Assistance HMI ProMo RTU Ethernet/Fläktbus Input signals -Vibration -Sound -Opacity -Boiler load etc.. Input signals EPIC III Control unit for T/R\s EFFIC Control unit for Fabric Filter EPICAB FF ESP Control of T/R, rappers, heaters etc. SIR HV energization and control of rappers, heaters etc Conventional T/R -Pressure drop -Opacity etc..

9 Alstom Power Electronic - SIR Switched Integrated Rectifier High frequency electronic power processing technique. Transformer, power electronics and controller are integrated in the same housing. AC input, DC output. AC AC DC HV DC CONTROL SIR - High frequency power processing 50 khz Mains frequency power processing AC AC DC AC DC HV DC Last Version: SIR IV 100kV/1200mA CONTROL

10 Alstom Power Electronic - SIR Traditional Hz Single phase 2000 kg 600 Litre Oil T/R Set Comparison High Frequency khz 3-phase kg 50 Litre Oil Peak to Trough Ripple as high as 50% of average voltage Peak to Trough Ripple less than 5% of average voltage RMS value maximized RMS value reduced Typical 2-19 msec recovery from spark over Typical msec recovery from spark over kv Controls & Cabinets built in SIR ESP Voltage kv Peak kv ( ) Spark level Conv. T/R Valley kv 220 Kg Kg. S Conv. T/R SIR ESP Current ma

11 Biomasse Italia - Strongoli

12 Biomasse Italia - Crotone End product silo Electrostatic Precipitator Bicarbonate injection