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 İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 45 Konu: 5
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1016/j.ijhydene.2018.12.198
  • Dergi Adı: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
  • Sayfa Sayıları: ss.3532-3548

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.