elektrofilter: einsatz in der wta-anlage der rwe power ag ... · pdf filezt 24 / variodyn 15...
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ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
Trocken-Elektrofilter: Innovativer Einsatz in der WTA Braunkohlentrocknung der RWE Power AG
Technical information about
Electrostatic PrecipitatorInnovative use in WTA technology for lignite drying
Plant from RWE Power AG
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
Raw Gas
RohgasBrden aus Kohletrocknung
Electrical Power
Elektrische Energie
Clean Gas
Reingas
Collected particles
abgeschiedener Braunkohlestaub
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
Gas: Steam withcoal dust
Volume flow: 180.000 m/h
Temperature: 130 C
Pressure: 1,300 bar g
Collection area: 4.344 m
High tensionvoltage:
86.000 V
Current: 1.200 mA
Dust outlet total: 22 t/h
Clean dustconcentration
20 mg/m (i.N.)
Complete trace heating of the whole casing surface
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
Typical frame construction of an ESP with internal bracings
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
Construction details for the ESP(To be seen on next page)
Design for 300 mbar over pressure Material: common carbon steel, only Trough type hoppers with inliner from stainless
steel. All Internals are designed to prevent dust accumulation on surfaces (no horizontal
corners, no horizontal bars) Hopper in trough type shape with long screw inside Discharge frame pipes gastight to prevent dust inside Purging of Isolators with N2/ Steam during operation Washing of ESP internals with water, used only prior to maintenance Rapping of distribution planes required Additional flexible vanes from flexible textile material
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
Discharge electrodes pipes gastight to
prevent dust inside
Additional flexible vanes from flexible textile material Hopper in trough type shape
Rapping of distribution planes required
Washing of ESP internals with water, used only prior to maintenance
Purging of Isolators with N2/ Steam during operation
Darstellung mit WTA E-Filter und den WTA specifischen Auslegungsdetails
Material: common carbon steel, only Trough type hoppers with inliner from stainless steel.
All Internals are designed to prevent dust accumulation on surface (no corners, no horizontal bars)
Design for 300 mbar over pressure
Complete trace heating of the whole casing surface
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
Verfahrensschritte
1. Elektronen-Emission Korona der Elektrode
2. Ladung Staubpartikeln Diffusionsladung fr
Partikel < 0,5 m Feldladung fr
Partikel > 0,5 m3. Transport der geladenen
Partikel Coulombsche Kraft Stokesches Gesetz
4. Staubansammlung an der Niederschlagselektrode Kohsion / Adhsion Spannung
5. Staubabreinigung von der Niederschlagselektrode mechanisches Klopfen Schwingung
Staubbelag
Nieder-schlags-elektroden-flche
KlopfmechanikSprhelektrode mit negativerHochspannung (20 111 kV)
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
Electrode SystemZT 24 / VARIODYN 15
Sprh- und Nieder-schlagselektrodeZT 24 / VARIODYN 15
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
Discharge Frame withVARIODYN 15 Electrodes
Sprhrahmen mit VARIODYN 15 Elektroden
Discharge frames in WTA design: pipes gastight welded to prevent anydust inside of the frame
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
Distribution of Rapping Acceleration in g Values over the Surface of a Collecting Electrode Type ZT 24
Verteilung der Klopfbeschleunigungen in g an der Oberflche einer Niederschlagselektrode Typ ZT 24
Klopfschlag
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
ESP (Background) to separete Lignite dust from exhaust vapour;Small unit (foreground) is bag filter for all aspiration streams (not part of the process)
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
Erection trough type ESP hopper
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
Erection of collecting electrode plates
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
Roof: Raincover, Insulation and steam traceheating
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
Support insulator on roof levelCasing 10% trace heated with steam pipes
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
TR-Unit (transformer-rectifier for high tension)
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
Ducts from lignite dryer, on the way to ESP (background)
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
Gas distribution plates in gas inlet Passages with collecting electrodes (plates) and discharge electrodes (frames with spanned wires)
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
Rheinisches Braunkohlerevier
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
WTA lignite drying gives 4-6 % more efficiency compared with integrated lignite drying in boiler
Rauchgas+ Brden1,000C
heiesRauchgas
Roh-kohle
Trockenkohle+ Rauchgas+ Brden
Kessel
TBK-Konzept:Separate Trocknung (WTA)
Kessel
Rauchgas
Trockenkohle
WTA
BoA-Konzept:integrierte Trocknung
Roh-kohle
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
53 t/h Rohkohle
WTA 1 Frechen1993 1999
ca. 20.000 Betriebsstd.
Grobkorntrocknunggrotechnisch
einsatzreif
29 t/h Rohkohle
WTA 2 Frechen2000 2004
ca. 8.000 Betriebsstd.
Feinkorntrocknung einfache, robuste Technik geringe Investitionskosten
210 t/h Rohkohle
WTA 2 Niederauemab 2009
Bisher ca. 3500 Betriebsstd.
FeinkorntrocknungErste vorkommerzielle
Anlage
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
ENVIROTHERMElektrofilter: Einsatz in der WTA-Anlage der RWE Power AGESP: Innovative use in lignite drying plant with WTA technology
Trockenkohleproduktion: 110 t/hWasserverdampfung: 100 t/h
Rohkohlekrnung: 0 - 2 mm Rohkohleeinsatz: 210 t/h
WTA-Konzeption fr 1000 MW BlockWTA-Prototypanlage
Auslegungsdaten WTA-Prototypanlage
840 t/hRohbraunkohle
1. Strang
2. Strang
3. Strang
4. Strang
Trockenkohle
440 t/h
Umfang WTA-Prototyp