Siemens AG 2016. All Rights Reserved.
Instrumentation, Controls & Electrical
September 28th 2016Max Starke, Product Manager for Process OptimizationArturo Montero, Sales Manager PG IE- Spain
NOx Reduction by Combustion OptimizationSPPA-P3000 Combustion Optimization Solutions
SPPA-P3000 Process Optimization Power Generation Instrumentation, Controls & Electrical Siemens AG 2016. All Rights Reserved.Page 2SPPA-P3000_siemens day 28th-v4a.ppt
Spanish Generation Market OverviewCoal Fired Power Plants = 10.065 MW
1.- La Directiva de Emisiones Industriales 1A.- Directiva 2010/75/UE del Parlamento Europeo y del Consejo, de 24 de noviembre de 2010. (GIC ; > 50 MWt) 1B.- Directiva (UE) 2015/2193 sobre Limitacin de Emisiones de Instalaciones de Combustin Medianas (MIC; 1-50 MWt)
2.- Las Centrales Trmicas de Carbn en Espaa
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1A.- La Directiva de Emisiones Industriales 2010/75/UE *) Alternativas y Calendario de Aplicacin
Spanish Generation Market OverviewCoal Fired Power Plants = 10.065 MW
SPPA-P3000 Process Optimization Power Generation Instrumentation, Controls & Electrical Siemens AG 2016. All Rights Reserved.Page 4SPPA-P3000_siemens day 28th-v4a.ppt
1B.- Directiva (UE) 2015/2193 Emisiones (MIC; 1-50 MWt) :*) Alternativas y Calendario de Aplicacin
Spanish Generation Market OverviewCoal Fired Power Plants = 10.065 MW
SPPA-P3000 Process Optimization Power Generation Instrumentation, Controls & Electrical Siemens AG 2016. All Rights Reserved.Page 5SPPA-P3000_siemens day 28th-v4a.ppt
2.- Las Centrales Trmicas de Carbn en Espaa
Spanish Generation Market OverviewCoal Fired Power Plants = 10.065 MW
SPPA-P3000 Process Optimization Power Generation Instrumentation, Controls & Electrical Siemens AG 2016. All Rights Reserved.Page 6SPPA-P3000_siemens day 28th-v4a.ppt
Spanish Generation Market OverviewCoal Fired Power Plants = 10.065 MW
SPPA-P3000 Process Optimization Power Generation Instrumentation, Controls & Electrical Siemens AG 2016. All Rights Reserved.Page 7SPPA-P3000_siemens day 28th-v4a.ppt
Mtodos chemicol(Chemical clearing of flue gas with Ammonia / Urea)
TCNICAS CLSICAS para Reducir los NOx SPPA-P3000 Combustion Optimization & SNCR/SCR
Medidas PrimariasAvoid NOx formation = good combustion
Mtodos de Control(Optimum, low O2 + fuel distribution in boiler)
NOx Reduction: 15-35%+O2 Reduction: 0.2-1.0%
(Efficiency 0.1-0.5%)
Tcnicas
Mtodos mecnicos(Combustion with low temperature + low O2)
Name Method Potent.LEA Low excess air
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Temperature distribution in the combustion zone
optimization
Calculation and evaluation of temperature-and concentration distribution through Computer-Aided Tomography (CAT)
before
Laser based Measurement of Temperature- and Concentrations- ( H2O, O2, CO, CO2, ...) values directly in the combustion zone
Unique direct measurement and optimization inside combustion zone
SPPA-P3000:2D-Measurent in combustion zone
Classical:Point measurement far downstream
afterwards
Measurement positions Measurement, Calculation, Optimization
Optimization through hybrid combustion control, using classical model based control structures and adaptive neural network
homogenous combustionincreased efficiencyreduced emissions
SPPA-P3000 Process Optimization Power Generation Instrumentation, Controls & Electrical Siemens AG 2016. All Rights Reserved.Page 9SPPA-P3000_siemens day 28th-v4a.ppt
Approved Technology...designed for the harsh boiler environment
Boiler(top view) Sensor Head
(Transmitter)
Junctionbox
Junctionbox
No sensitive electronics near the boilerAutomatic cleaning (rodders + air)Online alignment (SensAlign)Long service life time 100,000 h (use ofstandard telecommunication components)Standardised systems with 10-24 paths Modular variation of paths
Sensor Head(Receiver)
Boiler
Central installation of sensitive components, e.g. in electronic equipment room Measurements currently possible:- Temperature, O2, CO, CO2, H2O- Further development potential
Mux
12
403
Demux
12
403
Measurement cabinet
Transmitter Receiver
Electronic equipment room
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Absorption Spectroscopy a renown and established measurement technique
Absorption spectroscopy measures the absorption of radiation (e.g. photons) at specific wavelengths. The absorption intensity varies as a function of frequency causing absorption spectrums.Absorption spectroscopy is employed as an analytical chemistry tool to determine the presence of a particular substance in a sample and to quantify the amount of the substance present. Infrared and ultraviolet-visible spectroscopy are common in analytical applications. Absorption spectroscopy is also employed in studies of molecular and atomic physics, astronomical spectroscopy and remote sensing.
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Computer Aided Tomography commonly used e.g. in medicine technique (CT)
Path-average values Temperature-, Distribution ofConcentration
Values of intersection points
Computer Aided Tomography (CAT)Measurement, Reconstruction und Interpolation
SPPA-P3000 Process Optimization Power Generation Instrumentation, Controls & Electrical Siemens AG 2016. All Rights Reserved.Page 12SPPA-P3000_siemens day 28th-v4a.ppt
Mounting bolts
8-10 mm slot for boiler access
Installation of laser measurement equipment Requires only Minimum Effort and 1-2 Days of Outage
Mounting stem
Measurement head
Pneumaticcylinder Mechanic slag
rodder
SPPA-P3000 Process Optimization Power Generation Instrumentation, Controls & Electrical Siemens AG 2016. All Rights Reserved.Page 13SPPA-P3000_siemens day 28th-v4a.ppt
Laser measurement system equipped with Automatic Cleaning and Laser Centering
Port rodder retracted Port rodder extended
Boiler wall
Slagging
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SPPA-P3000 Combustion OptimizationSending Correction Signals into Exiting I&C Structures
Secondaryair & fuel
Boilerbefore optimization
(inhomogeneous combustion)
Existing I&C system
++
++
++
CorrectionSignals
OFA 2
OFA 1
after optimization(combustion homogenization)
Temp.
O2
CO
CombustionOptimisationControllers
2D-Measurement temp. & gas
concentrations
ControllerOFA 2.1
ControllerBurner 1
ControllerOFA 2.2
SPPA-P3000 Process Optimization Power Generation Instrumentation, Controls & Electrical Siemens AG 2016. All Rights Reserved.Page 15SPPA-P3000_siemens day 28th-v4a.ppt
Combustion optimization strategiesMinimizing excess air increases efficiency + reduces NOx
Measuring and homogenizing the combustion process avoids local emission & temperature peaks. This gives room for the optimization of the excess air level - beneficial for both the NOx emissions and the efficiency!
Is the boiler operated in the comfort zone or in the optimum zone?
Com
fort
Zon
e
Optimization
Opt
imum
Zon
e
Com
bust
ion
and
proc
ess
para
met
ers
Excess air
CO
Optimum
NOx
2 Efficiency
1
4O23
SPPA-P3000 Process Optimization Power Generation Instrumentation, Controls & Electrical Siemens AG 2016. All Rights Reserved.Page 16SPPA-P3000_siemens day 28th-v4a.ppt
SPPA-P3000 Combustion Optimization - Examples
EDF West Burton & Cottam,500 MW Hard Coal
NOx-Reduction
KCPL La Cygne,710 MW Hard Coal
NOx-Reduction
Huaneng Rizhao,680 MW Hard Coal
Efficiency Improvement
RWE Neurath & Niederauem,300-1000 MW Lignite
Efficiency Improvement Mark-E Elverlingsen,310 MW Hard Coal & MBM Co-Firing
Improved Co-Firing & NOx Reductions
GenOn Keystone,850 MW Hard Coal
Efficiency Improvement Infracor Marl,125 MW Hard Coal & Petrochemicals
Efficiency Improvement & NOx Reductions
NOx reduction increasingly important - worldwide
> 22-34%
+ 0.5%O2 - 0.9%NOx - 14.4%
Coal - 1.8t/hCO2 - 4.4t/h
ReferencePlants
20%
SPPA-P3000 Process Optimization Power Generation Instrumentation, Controls & Electrical Siemens AG 2016. All Rights Reserved.Page 17SPPA-P3000_siemens day 28th-v4a.ppt
EDF Cottam Unit 3 - Case StudySet-Up & Improvements of Combustion Optimization
OFA99ft
~110ftNose
Laser measure-ment plain
SL
SL
SL
SL
Over fire air control
Secondary air control
