Gas Analyzer Probe LaserOFCEAS€¦ · 2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00 1589.2 1589.25...

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(OFCEAS) Optical Feedback Cavity Enhanced Absorption Spectroscopy Model 8000 Gas Analyzer AP2E Gas Analyzer Probe & Laser OFCEAS

Transcript of Gas Analyzer Probe LaserOFCEAS€¦ · 2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00 1589.2 1589.25...

  • (OFCEAS)Optical Feedback Cavity Enhanced

    Absorption Spectroscopy

    Model 8000 Gas Analyzer

    AP2E

    Gas Analyzer Probe & Laser OFCEAS

  • Model 8000 Gas Analyzer

    Now Available to Monitor Nox, CO2, SO2, O2CO Coming Soon!

    Control Unit Insitu Detector Probe

  • Typical Locations

    CEMTEK 8000Probe System

    Monitor NOx SCR inlet /outlet to determinescrubber efficiency

    Each Probe consists of acomplete system

    Low Cost NoncompliantSystem

  • Applications & Technology

    Measurement method

    NOx solid state Chemiluminescence sensorSO2 – NDUV

    O2 Zirconia planar sensorCO2 – Infrared sensor (NDIR)

    NOx probe product is Designed for

    Post combustion SCR inlet/outlet monitoringCombustion turbine tuning

    Low Nox burner tuning

  • Basic ComponentsAnalyzer controller

    houses the control electronics and flow controls

    Probe contains the dilution block and configured measurement sensors:NO, NO2, O2, CO2

    Interconnect cable contains the, calibration gas line, dilution air line,thermocouple and power cables.

    Duct / Stack Mounted Analyzer

  • Analyzer Controller

    Flow Control AssemblyCal Span Gas &

    Instrument air

    Instrument Air

    Calibration

    Dilution

    EnclosureNEMA 4

    Optional 4X SS

    HMI Display

    Heaters/VAC

    Control/VDC

    Dimensions:

    12” x 16” (9.4”deep)

    ¼” swagelockfittings

    Control Board Assembly

    Controller Components

  • Dilution Probe Enclosure

    Ozonator

    NOx Sensor

    Instrument Air

    Calibration Dilution

    Control/VDC

    Heaters/VAC

    Probe

    Temp ControlHeater

    Dimensions:

    16” x 20” x 9.78” (to flange)

    ¼” swagelock fittings

    Max ambient temp: 140F

    NEMA 4/NEMA 4X SS(option)

    Mounting:

    via 5/8” studs ontocustomer supplied process

    flange

    Probe Enclosure Components

  • Probe Advantages

    Low Flow – Dilution sample technology, EPAprovenNo Sample ConditioningFast Response 5 seconds to 90% step changeLow Maintenance, low installation costRobust Probe Mounted OPTIONAL O2 and NO2converter

    Advantages ofIn Probe Design

  • Pneumatic Block Assembly

    Regulates all the systemflows

    Consists of balance regulators& plumbing

    2 flow regulators control theflow of calibration gas &instrument air supply to theNOx sensor.

    At the same time eductorplumbing feeds the pump airsupply

  • Installation Requirements

    All connections are via the 1.5” Conduit Connection

    One ¼” Swagelok port for calibration gas, concentration is dependent on

    range, xx ppm NO in N2

    One ¼ Swagelok port for instrument air (1.5 SCFM @ 80 psi). Clean dry air @

    30F dew point, for dilution air & zero gas.

    Air Clean up Panel is available as an option (compressed air unavailable)

    Signals to customer control are isolated 4 20 mA analog

    General Fault alarm – analyzer powered 24v dc

    Power consumption of 5A (max on startup) at 120VAC.

    System Installation Requirements

  • Controller Interface

  • Multi unit Installation

  • Installation References(Details Available)

    • AEP, Environmental Equipment Performanceoffice

    • Genon Energy Reading PA (7EA CT)

    • AEP Gavin Plant

    • Ameren Energy Edwards Station

    • TVA Kingston Plant

    • Hoosier Energy Coop Merom Station

    • OVEC Kyger Creek Plant

    • First Energy, Bruce Mansfield

  • SCR Performance Optimization

    Actual time differential between 8000 NOx Probe & DilutionExtractive System – approximately 90 secs

  • AP2E Patented System

    Low PressureSampling System

    Low PressureSampling System

    (OFCEAS)Optical Feedback Cavity Enhanced

    Absorption Spectroscopy

    (OFCEAS)Optical Feedback Cavity Enhanced

    Absorption Spectroscopy

  • Low Pressure Sampling

    On line gas analysis measurement, extremely fast response time, high sensitivity,no drift, minimal interference.

    Simplified minimal sampling system, multigas measurement capability

  • Measurable Compounds

  • Improved Sensitivity

    Increased Signal IntensityReduced Signal NoiseImproved Response Linearity

    Direct Intensity MeasurementSelf Referencing Device

    Self StabilizationSelf Standardization

    Part 1(OFCEAS)

    OpticalFeedbackCavityEnhancedAbsorptionSpectroscopy

    Part 1(OFCEAS)

    OpticalFeedbackCavityEnhancedAbsorptionSpectroscopy

  • Traditional Design: Multipass Gas CellPathlength = l1 = 1 – 10 m

    Concentration = Absorbtion / length.

    Improved Sensitivity

  • OFCEAS design: Hyper-Reflective Gas CellPathlength = l2 = 1 – 10 km

    Concentration = Absorbtion / length.

    Sensitivity Improvementl2 / l1 = 1,000 X

    1 MHz BW

    Improved Sensitivity

  • Feedback enables increased laser purity

    Reduced Noise(single scan noise = 4.10 10 A.U.)

    Increased Signal Intensity(10X increase compared to laser alone)

    Improved Instrumental Response Linearity(4 orders of magnitude)

    0.01 MHz BW

    Signal Noise andResponse Improvements

  • Laser Intensity(mA)

    Wavelength

    Injected Laser beam wavelengthcontrolled by applying a current

    (0.002 nm / mA)

    Continuous intensity spectrum

    200 equidistant data points

    0.00112 nm optical resolution

    Discrete spectrum

    Direct MeasurementSelf Referencing

    1

    20

    80

    (nm)T + d I

    T

    t(ms)

    2 3 199 200

    100 ms

  • 0.00112nm0.005cm-1

    0.22 nm centered @ 1,500 nm

    Injected Laser beam wavelengthcontrolled by applying a current

    (0.002 nm / mA)

    Continuous intensity spectrum

    200 equidistant data points

    0.00112 nm optical resolution

    Direct MeasurementSelf Referencing

  • 0.00112nm0.005cm-1

    I0 (ZERO) I (conc.)

    Each spectrum contains bothI(concentration) and

    I0 (re zero) informationNO REFERENCE GAS

    REQUIRED

    Raw Spectrum

    Direct MeasurementSelf Referencing

  • Beamsplitter / PhotoDiodeContinuous intensity standardization

    Piezo Electric Motor Controller MirrorPhase synchronization

    Ring Down Measurement(after each spectrum)Check gas cell cleanliness

    Laser FeedbackSelf Stabilization (mode locking)

    NO DRIFT

    Self Stabilization &Standardization

  • Optical Bench

  • 1 Increasing sensitivity over standard gas cells by increasing pathlength to up 20 km (a1,000x improvement in signal intensity)

    2 Improve wavelength accuracy by 100x, reducing noise and increasing signal intensity byfeeding back the laser beam onto itself

    3 Self stabilizing the spectrometer by monitoring (and compensating for) the variationsof intensity of the laser IR source

    4 Providing information at 200 different wavelengths every 100 millisecond for multi gasanalysis and self referencing capabilities

    5 Reducing sample conditioning, and cleaning requirements, and accelerating responsetime by operating at low pressure

    Technology of OFCEAS

  • Improved Sensitivity

    Increased Signal IntensityReduced Signal NoiseImproved Response Linearity

    Direct Intensity MeasurementSelf Referencing Device

    Self StabilizationSelf Standardization

    100 mBar Experimental

    • Wavelength accurate

    • Multi componentsingle laser application.

    • Simultaneousmeasurement ofspecies @ ppm leveland species @ %concentration levels

    • No interference / falsepositive response

    • Absolute measurement(no re zero)

    • Self standardizingsystem (no drift)

    Spectrometers vs. OFCEAS

  • Selectivity: NDIR vs. FTIR

  • NDIR/FTIR selectivityH2S example low res/ high interference

  • Part 2(LPS)

    L owP ressure (50 mBar)S ampling

    Part 2(LPS)

    L owP ressure (50 mBar)S ampling

    Absorption Bands Narrowing,Matching Spectral InformationTo Optical Resolution

    Avoiding Condensates InThe Sampling Line

    Faster Sample Transfer Times

    Minimized Maintenance

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    800mbr

    400mbr

    200mbr

    100mbr

    Narrows the bandwidth of the absorption bands touse the full potential of the extremely low optical

    resolution.Avoids interferences and false positive response.

    CO2 (30%) CH4 (30%) H2S (300 ppm)

    Absorption Bands

  • As pressure decreases . . .… so does theboiling point …

    … and so does thedew point..

    Pressure (atm.)Critical Point

    Solid(ice)

    Liquid Gas(vapor)

    Avoiding Condensates

  • No Heated Lines Required *

    Sampling post SCRemissions at a trashincinerator facility.

    Sampling engineemissions at engine

    research facility.

    * No heated line required if H2O < 20% vol. and T > 10 Celsius. Otherwise, 40 Celsius heating required.

    Avoiding Condensates

  • Flow Rate @Sampling Probe 3 – 9 L/h

    Flow Rate @Inside Line 30 – 90 L/h

    Transfer Time(4/6 tubing) ~ 5 sec / 10 m

    Faster Transfer Times

  • High velocity flow rate under low pressure samplingmeans less sample drawn across the filter and

    less maintenance.

    Quartz wool filterafter 3 months of usesampling post SCRemissions at a trashincinerator facility.

    Minimized Maintenance

  • Feature

    Feedback – 10x signal intensity increase

    Analytical Benefit

    Sensitivity (ppt levels)

    Feedback – 10 KHz laser bandwidth0.00112 nm resolution

    Multicomponent analysis single laser(e.g. SO2, O2, H2S, CH4, C2H6, etc)

    Low Pressure Sampling Remove problem with condensableRemoves interferences issues.

    104 Dynamic Range Measure ppm and percent level speciessimultaneously.

    Scanning Speed / Co Addition 1 full spectrum (200 equidistant discretedata points collected every 100 ms)Fast response time; low signal noise.

    Absolute measurementNo re calibration required.No re zero required.No instrumental response drift.

    ProCeas ®Trace Gas Analyzers

  • SAMPLING SPECIFICATIONS

    Flow RateMax Temp. (°C)Max HumiditySample pressure

    3 – 9 liter/hour600°CH2O < 25% vol. (absolute)Atm +/ 100mbar

    OPERATIONAL SPECIFICATION

    Operational Temp. (°C)

    Sampling ProbePower RequirementsPower InputOil free compressed air

    15 25°C(10 40°C optional)Sonic Sampler (input)200 W110 – 220V/50 60Hz1 6 bars (not provided)

    DIMENSIONS

    Dimensions

    WeightWall mounted versionATEX version

    19’’ RackDepth: 545mm (21.8 in.)30 kg (66 lbs)On requestOn request

    SOFTWARE SPECIFICATIONS

    Display / Control

    SoftwareOperating System

    Color touchscreen (5.7”diagonal)Win ProCeas ©Windows ® XP ®

    DATA I/O’s

    Standard:• Ethernet Protocol• RS485, RS232• Analog I/O & TOR

    Optional:• MODBUS• other on request

    ANALYTICAL SPECIFICATIONS

    RepeatabilityZero drift

    Stability

    < 0.5 % rel. to max in rangeNone(Absolute Measurement)< 1% of full scale

    ProCeas ®Trace Gas Analyzers

  • ProCeas Trace Gas AnalyzersExisting Installations 1/3

  • ProCeas Trace Gas AnalyzersExisting Installations 2/3

  • ProCeas Trace Gas AnalyzersExisting Installations 3/3

  • Thank you . . .I appreciate your time

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