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Infrared Spectroscopy for Online Measurement of Tars, Water, and Permanent Gases in Biomass Gasification
RISE Research Institutes of Sweden, Säkerhet och transport, Säkerhetsforskning. University of Gothenburg, Sweden.ORCID-id: 0000-0001-7163-1692
Lund University, Sweden.
RISE Research Institutes of Sweden, Bioekonomi och hälsa, Bioraffinaderi och energi. University of Gothenburg, Sweden.ORCID-id: 0000-0001-5998-8058
2021 (engelsk)Inngår i: Applied Spectroscopy, ISSN 0003-7028, E-ISSN 1943-3530, Vol. 75, nr 6, s. 690-697Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Online measurements of the raw gas composition, including tars and water, during biomass gasification provide valuable information in fundamental investigations and for process control. Mainly consisting of hydrocarbons, tars can, in principle, be measured using Fourier transform infrared (FT-IR) spectroscopy. However, an instrument subjected to raw gas runs the risk of condensation of tars on optical components and subsequent malfunction. Therefore, an external cell, heated to at least 400 ℃, has been designed to ensure that tars remain in the gas phase during FT-IR measurements. The cell was used for on-line FT-IR measurements of permanent gases (CO, CO2, CH4), water, and tars during the operation of a lab-scale downdraft gasifier using wood pellets, bark pellets, and char chips. Based on calibration, the measurement error of permanent gases was estimated to be 0.2%. Concentrations evaluated from spectral signatures of hydrocarbons in tar are in good agreement with results from solid-phase adsorption measurements and correlated well with operational changes in the gasifier. 

sted, utgiver, år, opplag, sider
SAGE Publications Inc. , 2021. Vol. 75, nr 6, s. 690-697
Emneord [en]
gasification, hydrocarbons, infrared spectroscopy, On-line tars, Fourier transform infrared spectroscopy, Infrared imaging, Pelletizing, Biomass Gasification, Downdraft gasifier, Fourier transform infra red (FTIR) spectroscopy, On-line measurement, Operational changes, Risk of condensation, Solid phase adsorptions, Spectral signature, Gases
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URN: urn:nbn:se:ri:diva-52553DOI: 10.1177/0003702821991891Scopus ID: 2-s2.0-85101132274OAI: oai:DiVA.org:ri-52553DiVA, id: diva2:1535308
Tilgjengelig fra: 2021-03-08 Laget: 2021-03-08 Sist oppdatert: 2023-05-26bibliografisk kontrollert

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