1 / 27

Siemens Laser Analytics

Siemens Laser Analytics. Presentation Siemens Laser Analytics. Analyzers. Cost is very important from two perspectives Cost of investment Cost of owning Focus on process control for optimization of Energy Process quality Environment Critical issues for in-situ process analyzers

kentaro
Download Presentation

Siemens Laser Analytics

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Siemens Laser Analytics • Presentation • Siemens Laser Analytics

  2. Analyzers • Cost is very important from two perspectives • Cost of investment • Cost of owning • Focus on process control for optimization of • Energy • Process quality • Environment • Critical issues for in-situ process analyzers • Performance • Quality • Availability • Real time reading

  3. The measurement system design

  4. CU 3000 CD 3002 FC 3001 The LDS 3000 Analyser System A central unit - CU 3000 - located in control room environment • up to 3 measuring point can be operated parallel with one central unit Extreme robust sensors forming the process interface - CD 3002 The sensors are coupled to the analyser via a single hybrid cable containing fibre optics and copper wires - FC 3001

  5. LDS 3000: Frequently Asked Questions • Mature, heavy-industry-proof sensor design? • LDS 3000: easy installation, highest performance, low maintenance • In-situ, no gas sampling? • LDS 3000: never in contact with the process gas! • Low maintenance? • LDS 3000: no moving parts, just cleaning of sensor lenses! • Fast response times? • LDS 3000: less than 2 s! • Problems with cross interference to other gases or dust load? • LDS 3000: high resolution single line absorption spectroscopy! • LDS 3000: signal available from 100 % - 0,3 % transmission!

  6. LDS 3000: heading new frontiers • unique selling points of diode lasers: • In-situ line-of-sight measurement, no gas sampling • highest sensitivity and selectivity • fast response times down to 1 second • measurement feasible in high dust loads and complex gas mixtures • unique selling points of LDS 3000: • separation of analyser and process environment by using fibre optics and robust optical sensors • lifetime factory calibration by internal hands-off reference cell • measurement feasible in extrem and fast changing high dust loads • EEX ia as an option for operation in Ex zones • high competence in HT processes

  7. Customer criteriaof an analyzer • Defined industrial interface • Installation, performance and maintenance • In-situ, no extractive sample lines • Never in contact with the gas • Minimum of maintenance • No moving parts • Cleaning lenses twice a year • Short response time • Less than 2 seconds • Interference free, in principle • Accurate and sensitive in rough environment • Compensated for dynamic dust load • From 100 % transmission to as low as 0,5 % transmission

  8. Applications • Combustion • Combustion optimization • DeNOx: financial incentive (MWI, Power Plants, Heavy Duty Vehicle) • Filter optimization • ESP safety • Emission • Metallurgy • Steel • Non-ferrous – Aluminium • Emission and process • Other • Chemical & refinery, today Ex certified • Glass • etc

  9. Major applications today • Components today NH3, O2/temp, HF/HCl and CO • Measure Ammonia in DeNOx • Power Plants, Heavy Duty, MWI • Measure Oxygen/temp in the combustion zones • MWI and Steel production (CO and CO2 ) • Measure HF and HCl for filter optimization • Aluminum smelter and MWI • Measure HF and HCl for emission purpose • Aluminum smelter and MWI • Measure CO for ESP safety • Cement and HWI

  10. The measurement system design • A central instrument unit is kept in a control room environment - CU 3000 • Can handle 3 points simultaneously • An optical fiber cable, FC 3001, connects the central unit with the sensors • Extremely rugged sensor heads are used as the interface to the industrial process - CD 3002 Distance 10 - 1000 m Transmitter Receiver

  11. Block diagram of the measurement system

  12. NIR spectrum NH3/H2O

  13. Typical NIR Spectra: NH3/H2O spectral region of laser scan

  14. Performance demand NH3 slip at SCR • Environment after SCR for NH3-slip • Range: 0 – 10 ppm • Accuracy: +/- 0,5 ppm • Response time: c:a 1 – 3 seconds or more • Path length: 3 – 10 m. • Dust load: < 15 g/Nm3 • Temperature: < 650 °C • Flange: DN65/PN6 alt 150 lbs 4 “ • Purge media: Fan alt instrument air • The demand. • To measure below 2 ppm of ammonia in high dutload.

  15. SCR on Coal Power Plant App. 20 - 30 m. App. 5 - 15 m.

  16. One layer SCR basic set up • Inject NH3 in the raw gas • Minimize slip to the air pre heater • Monitor NH3 in situ • Optimizing cleaning cycles NH3 + NOxÔ N2 + H2O

  17. Other NH3 installations TotalELFAtofina Rygerbergerdam – MWI BBP Alstom France & Italy Yokogawa/TEPCO Siemens British Steel/Corrus AMSA – MWI Italy Shell Detroit Diesel Cummins Volvo Nissan Diesel Bosch Caterpillar etc .... Installations – Västerås Power Plant Amagerverk Power Plant Noell – SCR supplier Blach&Veach China Steel BBP – SCR supplier Mobotec – SNCR supplier Seward Plant, Reliant Energy Cape Fear, CP&L Roxboro 1 & 3, CP&L, sept. - 2002 Mayo, CP&L installation, jan. - 2003 Customers

  18. T1 T2 T3 T1 T2 2 1 T3 1 2 Spectroscopic Temperature Determination • The analysis of the relative line strength of two close Oxygen lines in the same gas volume reveals the gas temperature

  19. Application: Combustion Control in MWI ZrO2 LDS3000 Results: - approx. 70 s time delay - better resolution of changes in the process conditions (Data by courtesy of BBP Environment GmbH, 1998)

  20. Compensation of High Dust Loads O2 concentration in the process Visibility conditions

  21. Performance demand O2 • Environment for O2 • Range: 0 – 10 vol. % • Accuracy: +/- 0,1vol % • Response time: c:a 1 – 3 seconds or more • Path length: 3 – 10 m. • Dust load: < X g/Nm3 • Temperature: < Y °C • Flange: DN65/PN6 alt 150 lbs 4 “ • Purge media: N2 instrument air

  22. Combustion control: stable power production, less corrosion, higher efficiency DeNOx control: less corrosion, optimised NH3 consumption Emission control NH3-sensor O2/temp-sensor HCl and or NH3 -sensors H2O-sensors Filter control: minimised lime consumption, less corrosion Siemens Laser Analytics – Application example Municipal Waste Incinerator

  23. Application: Optimisation of Bag House Filters Optimisation of gas cleaning by lime injection by fast real-time control of the HCl or HF concentrations in the raw gas before bag house filter: less emissionsless lime consumtion by20 - 30 % optimisation of maintenance and replacement cycles

  24. Application: Combustion Control in MWI Better control of the combustion process by fast closed loop measurements of O2: less access air byapprox. 10 % less energy losseslower volume flow related costs in gas cleaningless HT corrosionmore stable steam production without LDS 3000 withLDS 3000 steam production primary air secondary air O2 CO (Data by courtesy of RZR Herten, D, 1998)

  25. Application: Combustion Control in MWI • Process Quality by steam production with LDS 3000 withoutLDS 3000 (Data by courtesy of BBP Environment GmbH, 1998)

  26. with LDS 3000 with LDS 3000 Application: Optimisation of SNCR de-NOx plants Optimisation of SNCR de-NOx plants by fast in-situ measurements of the NH3 slip:better de-NOx efficiency less ammonia consumption by 25 – 30 %  less ammonia slip by 50 – 70 % less ammonia slat formation on cold surfaces (Data by courtesy of MVR, D, 2001)

  27. Application: Optimisation of Bag House Filters Optimisation of gas cleaning by lime injection by fast real-time control of the HCl or HF concentrations in the raw gas before bag house filter: less emissionsless lime consumtion by20 - 30 % optimisation of maintenance and replacement cycles

More Related