Applied Physics B

, Volume 116, Issue 1, pp 33–42

TDLAS-based sensors for in situ measurement of syngas composition in a pressurized, oxygen-blown, entrained flow coal gasifier

  • Ritobrata Sur
  • Kai Sun
  • Jay B. Jeffries
  • Ronald K. Hanson
  • Randy J. Pummill
  • Travis Waind
  • David R. Wagner
  • Kevin J. Whitty
Article

DOI: 10.1007/s00340-013-5644-6

Cite this article as:
Sur, R., Sun, K., Jeffries, J.B. et al. Appl. Phys. B (2014) 116: 33. doi:10.1007/s00340-013-5644-6

Abstract

Tunable diode laser absorption spectroscopy based in situ sensors for CO (2.33 μm), CO2 (2.02 μm), CH4 (2.29 μm) and H2O (1.35 μm) were deployed in a pilot-scale (1 ton/day), high-pressure (up to 18 atm), entrained flow, oxygen-blown, slagging coal gasifier at the University of Utah. Measurements of species mole fraction with 3-s time resolution were taken at the pre- and post-filtration stages of the gasifier synthesis gas (called here syngas) output flow. Although particulate scattering makes pre-filter measurements more difficult, this location avoids the time delay of flow through the filtration devices. With the measured species and known N2 concentrations, the H2 content was obtained via balance. The lower heating value and the Wobbe index of the gas mixture were estimated using the measured gas composition. The sensors demonstrated here show promise for monitoring and control of the gasification process.

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Ritobrata Sur
    • 1
  • Kai Sun
    • 1
  • Jay B. Jeffries
    • 1
  • Ronald K. Hanson
    • 1
  • Randy J. Pummill
    • 2
  • Travis Waind
    • 2
  • David R. Wagner
    • 2
  • Kevin J. Whitty
    • 2
  1. 1.High Temperature Gasdynamics LaboratoryStanford UniversityStanfordUSA
  2. 2.Department of Chemical Engineering, Institute for Clean and Secure Energy (ICSE)University of UtahSalt Lake CityUSA

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