Numerical modeling of a downdraft plasma coal gasifier with plasma reactions

Ibrahimoglu B., YILMAZOĞLU M. Z.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, cilt.45, sa.5, ss.3532-3548, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 45 Sayı: 5
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1016/j.ijhydene.2018.12.198
  • Dergi Adı: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Artic & Antarctic Regions, Chimica, Communication Abstracts, Compendex, Environment Index, INSPEC
  • Sayfa Sayıları: ss.3532-3548
  • Anahtar Kelimeler: Gasification, Plasma, Coal, Equivalence ratio, Fossil hydrogen, Clean coal, ENTRAINED FLOW GASIFICATION, MUNICIPAL SOLID-WASTE, OXIDE FUEL-CELL, STEAM PLASMA, BIOMASS GASIFICATION, HYDROGEN-PRODUCTION, CHAR GASIFICATION, SYNGAS PRODUCTION, MICROWAVE STEAM, SEWAGE-SLUDGE
  • Gazi Üniversitesi Adresli: Evet

Özet

In this paper, a 3D numerical simulation of a downdraft plasma gasifier with plasma reactions is conducted. The effects of the equivalence ratio (ER) on the syngas properties in the presence of the plasma reactions are investigated. The boundary conditions for the air plasma inlet of the gasifier are obtained from the outlet of a 10 kW microwave plasma generator. A conventional gasification analysis is carried out to validate the model. In the second part of the study, plasma reactions are added to conventional gasification equations. Mole fractions of the constituents of the syngas and temperature contours are obtained for different ER values. According to the results, with the increase of ER from 0.20 to 0.45 the lower heating value of the produced syngas decreased from 1536.6 kcal/m(3) to 751.8 kcal/m(3). (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.