Analysis of Tar in Syngas Generated by Lignite Gasification under Conditions of Excess Steam

• MURAKAMI Takahiro

  Research Institute of Energy Frontier, Dept. of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST)

• YASUDA Hajime

  Research Institute of Energy Frontier, Dept. of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST)

Bibliographic Information

Other Title

• 過剰水蒸気条件下での褐炭ガス化により生成する合成ガス中のタールの分析

Abstract

Gasification technology converts a solid fuel to syngas, and it has wide utility for power generation and hydrogen production. In a dual fluidized bed gasifier, the fuel is gasified with steam. As the gasifier operates at 1073-1173 K, tar is generated in the syngas, and a tar reformer such as a catalytic reforming tower is normally required. To ensure optimal reformer design, it is important to clarify the components of the tar. In this study, the components of tar were investigated using a laboratory-scale fluidized bed gasifier to gasify lignite at 1123 K, employing wide variations in the amount of supplied steam. As the steam supply increased, the tar concentration decreased. In addition, a prediction method in real time of the tar concentration in the syngas which is varied by the amount of steam supplied to the gasifier from the analysis of the hydrogen and carbon monoxide produced was proposed. The tar components were analyzed using various hyphenated techniques such as gas chromatograph mass spectrometry (GC/MS) and field desorption mass spectrometry (FD-MS). The main components detected were polycyclic aromatic hydrocarbons (PAHs) without any substituent groups. It was shown that even if the steam was supplied at triple the required stoichiometric ratio, the tar composition was unchanged.

Journal

• Journal of the Japan Petroleum Institute

  Journal of the Japan Petroleum Institute 63 (2), 62-69, 2020-03-01

  The Japan Petroleum Institute

Keywords

• Tar component
• Excess steam
• Lignite gasification
• Polycyclic aromatic hydrocarbon
• GCMS
• FD-MS

Details

• CRID: 1390846609808869120
• NII Article ID: 130007804575
• NII Book ID: AA11590615
• DOI: 10.1627/jpi.63.62
• ISSN: 1349273X
• ISSN: 13468804
• NDL BIB ID: 030294039
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I030294039
• Web Site: https://www.jstage.jst.go.jp/article/jpi/63/2/63_62/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed