Research Papers: Fuel Combustion

A Measurement Device for Online Monitoring of Total Tar in Gasification Systems

[+] Author and Article Information
A. Gredinger

Institute of Combustion and
Power Plant Technology—IFK,
University of Stuttgart,
Pfaffenwaldring 23,
Stuttgart 70569, Germany
e-mail: andreas.gredinger@ifk.uni-stuttgart.de

D. Schweitzer, H. Dieter, G. Scheffknecht

Institute of Combustion and
Power Plant Technology—IFK,
University of Stuttgart,
Pfaffenwaldring 23,
Stuttgart 70569, Germany

Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received July 21, 2015; final manuscript received January 13, 2016; published online March 1, 2016. Assoc. Editor: Yiannis Levendis.

J. Energy Resour. Technol 138(4), 042205 (Mar 01, 2016) (7 pages) Paper No: JERT-15-1269; doi: 10.1115/1.4032730 History: Received July 21, 2015; Revised January 13, 2016

Tars produced during the thermal conversion of coal or especially biomass is one of the major obstacles for the application of gasification systems. They limit the use of the producer gas in engines or turbines or, in further processes like in methanization or conversion to other secondary fuels or chemicals, without further gas cleaning. The determination of the tar content with conventional methods is very time consuming and does not allow continuous online monitoring of the gas quality. One approach to avoid these drawbacks is an automatic system developed at the University of Stuttgart that monitors the tar concentration in the producer gas online and semicontinuous during the gasification process. The technique is based on a flame ionization detector (FID) difference measurement of the hydrocarbons in the producer gas, where the condensable hydrocarbons—the tars—are condensed on a suitable filter material. This work shows the further development of the measurement technique, the choice of a suitable tar filter material for the underlying difference measurement, and a first verification of the system with real producer gas at a 20 kWth bench scale gasifier.

Copyright © 2016 by ASME
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German Institute for Standardisation (DIN), 2006, “Biomass Gasification—Tar and Particles in Product Gases—Sampling and Analysis,” Beuth Verlag, Berlin, Standard No. Norm DIN CEN/TS 15439:2006-08.
Brage, C. , Yu, Q. , Chen, G. , and Sjöström, K. , 1997, “ Use of Amino Phase Adsorbent for Biomass Tar Sampling and Separation,” Fuel, 76(2), pp. 137–142. [CrossRef]
Sun, R. , Zobel, N. , Neubauer, Y. , Chavez, C. C. , and Behrendt, F. , 2010, “ Analysis of Gas-Phase Polycyclic Aromatic Hydrocarbon Mixtures by Laser-Induced Fluorescence,” Opt. Lasers Eng., 48(12), pp. 1231–1237. [CrossRef]
Carpenter, D. , Deutch, S. , and French, R. , 2007, “ Quantitative Measurement of Biomass Gasifier Tars Using a Molecular-Beam Mass Spectrometer: Comparison With Traditional Impinger Sampling,” Energy Fuels, 21(5), pp. 3036–3043. [CrossRef]
Fendt, A. , Streibel, T. , Sklorz, M. , Richter, D. , Dahmen, N. , and Zimmermann, R. , 2012, “ On-Line Process Analysis of Biomass Flash Pyrolysis Gases Enabled by Soft Photoionization Mass Spectrometry,” Energy Fuels, 26(1), pp. 701–711. [CrossRef]
Neubauer, Y. , 2008, “ Online-Analyse von Teer aus der Biomassevergasung mit Lasermassenspektrometrie,” Ph.D. thesis, TU, Berlin.
Defoort, F. , Thiery, S. , and Ravel, S. , 2014, “ A Promising New On-Line Method of Tar Quantification by Mass Spectrometry During Steam Gasification of Biomass,” Biomass Bioenergy, 65, pp. 64–71. [CrossRef]
Ahmadi, M. , Knoef, H. , Van de Beld, B. , Liliedahl, T. , and Engvall, K. , 2013, “ Development of a PID Based On-Line Tar Measurement Method—Proof of Concept,” Fuel, 113, pp. 113–121. [CrossRef]
Herthan, T. , Moersch, O. , Spliethoff, H. , Berger, R. , and Hein, K. R. G. , 2001, “ The Tar Analyzer—A Suitable Tool for the Development and Control of Gasifiers and Gas Cleaning Systems,” 1st World Conference on Biomass for Energy and Industry, Seville, Spain, June 5–9, pp. 1556–1559.
Staiger, B. , Wiese, L. , Berger, R. , and Hein, K. R. G. , 2004, “ Investigations of Existing Gasifier-and Gas Cleaning Technologies With an Online Tar Measuring System,” 2nd World Conference on Biomass for Energy, Industry and Climate Protection, Rome, May 10–14, pp. 789–792.
Knoef, H. A. M. , ed., 2012, Handbook Biomass Gasification, 2nd ed., BTG Biomass Technology Group, Enschede, The Netherlands.
Holm, T. , 1999, “ Aspects of the Mechanism of the Flame Ionization Detector,” J. Chromatogr., 842(1–2), pp. 221–227. [CrossRef]
Gans, W. , and Baumbach, G. , 1985, Kalibrierverfahren zur quantitativen Bestimmung flüchtiger organischer Substanzen in Abluft und Abgasen mit dem Flammenionisationsdetektor Fortschrittsberichte VDI Reihe 15 Nr. 32, VDI Verlag, Düsseldorf, Germany.
Wandinger, H. , 1995, “ Messungen an Muellverbrennungsanlagen, Chemie Anlagen Verfahren,” Konradin-Verlag Robert Kohlhammer GmbH, Leinfelden-Echterdingen, Germany.
GKN, 2015, “ High Porosity Sintered Parts SIKA-B,” GKN Sinter Metals Filters GmbH, Radevormwald, Germany, accessed Nov. 9, 2015, http://www.gkn-filters.de/downloads/pdf/download.php?filename=13_GKN_Filters_SIKA-B_V9_ENG.pdf
Poboss, N. , Swiecki, K., Charitos, A., Hawthorne, C., Zieba, M., and Scheffknecht, G., 2012, “ Experimental Investigation of the Absorption Enhanced Reforming of Biomass in a 20 kWth Dual Fluidized Bed System,” Int. J. Thermodyn., (IJoT), 15(1), pp. 53–59.
ABB, 2015, “Advance Optima Integrated Analyzer System Solution,” ABB Inc., Wickliffe, OH, accessed Nov. 9, 2015, http://www.abb.com/product/seitp330/c1256dde004b6b1dc1256df1005210eb.aspx?productLanguage=ge&country=DE
Agilent Technologies, 2015, “ GC Systems: 490 Micro GC,” Agilent Technologies, Santa Clara, CA, accessed Nov. 9, 2015, http://www.chem.agilent.com/en-US/products-services/Instruments-Systems/Gas-Chromatography/490-Micro-GC/Pages/default.aspx


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Fig. 1

Basic principle of the FID tar measurement system: sampling phase (left) and analyzing phase (right)

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Fig. 2

FID-signal during sample and analysis cycle

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Fig. 3

The current version of the online tar measurement device prototype

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Fig. 4

Calibration gas response factors using different calibration gas concentrations

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Fig. 5

Installation layout of IFK test gas generator

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Fig. 6

FID-signal during sample and analysis cycle at ideal adsorption properties

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Fig. 7

Experimental results of toluene breakthrough while using different tar filter materials

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Fig. 8

Experimental results of tar species breakthrough while using different tar filter materials

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Fig. 9

Results of first field test with real producer gas from gasification



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