Introduction
O2 measurement is used to safely recover flue gas containing a high concentration of CO from a converter furnace. With conventional paramagnetic oxygen analyzers, O2 concentrations are obtained through a sampling system to recovery flue gas. Therefore, there are problems with the maintenance and running costs of the sampling system, and time delays in measurement. The TDLS Laser Analyzer is the solution to all these problems.
Expected Benefits
- Eliminates the need for sampling and reduces the maintenance and running costs of the sampling system
- High-speed response, ability to apply measurement results to control the O2 concentrations, improves gas recovery rate, and reduces fuel costs through the reuse of the recovered gas
- Continuous monitoring and highly accurate O2 concentration monitoring
Process Overview
An oxygen converter gas recovery (OG) system is a treatment system to safely recover flue gas containing a high concentration of CO from a converter furnace. Since the recovered flue gas is reused as fuel, a slow response time results in a waste of fuel resources. That is why high-speed response and high reliability are required for O2 measurements.
| Example of Iron and Steel Converter Furnace Process (Block Diagram) |
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Solution Details
The point is to use the TDLS capable of directly measuring the O2 concentrations after IDF, instead of conventional paramagnetic oxygen analyzers that perform measurements through a sampling system. The high-speed response and high accuracy of the TDLS for the converter furnace process enable high purity gas to be recovered with higher efficiency.
Field Data
Converter Furnace Process and Changes in Measured Values of O2 Concentration (Installation Example A)
Notes：Example of TDLS8000
- Power supply: 100 - 240 VAC, 50/60 Hz
- Purge gas: N2
Flowrate: 5 L/min to 50 L/min - Dust concentration (standard): 15 g/Nm³ or less
- An insertion tube (custom order) is used
Industrieën
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IJzer en staal
In de ijzer- en staalindustrie is het van cruciaal belang om niet alleen de kwaliteit van producten te verbeteren, maar ook de productie- en bedrijfstechnologieën en om milieu- & energie-efficiëntievraagstukken aan te pakken. Yokogawa helpt klanten bij het creëren van de ideale fabriek en evolueert met hen mee voor wederzijdse groei.
Gerelateerde producten & oplossingen
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In-Situ Gas Analyzer TDLS8000
Yokogawa’s new TDLS™8000 houses all of the industry’s leading features in one robust device. The platform design is for in situ measurements which negate the need for sample extraction and conditioning.
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Probe type Tunable Diode Laser Spectrometer TDLS8100/TDLS8200
TDLS heeft een hoge snelheid meting en reactie, bemonstering is niet nodig, de installatie hoeft slechts aan een zijde, de installatiekosten zijn met de helft verminderd en het kan gemakkelijk worden uitgewisseld met bestaande apparatuur.