Hydrodynamic modelling of a two-stage biomass gasification reactor

Lívia Gyurik, Attila Egedy, Jun Zou, Norbert Miskolczi, Zsolt Ulbert, Haiping Yang

Research output: Contribution to journalArticle

Abstract

In our study the hydrodynamic behavior of a gasification reactor with two inlets and one outlet was numerically examined by the method of residence time distribution. We developed a Computational Fluid Dynamics (CFD) model of the reactor to solve the momentum and component balance equations of the system. The component balance equation was implemented to support the residence time distribution calculation. The mesh dependency of the CFD solution was checked by error rate and calculation time. In order to characterize the mixing and flow within reactor pulse experiments were performed numerically. A tracer impulse was introduced for 1 s to both inlets at the same time with concentration of 100 mol/m 3 approaching the Dirac delta function and tracer concentration at the outlet boundary of system was recorded. Compartmental modelling has a strong advantage over CFD as it has much smaller computational need. Therefore a compartment model in order to model the hydrodynamic structure of the reactor was also developed and compared to the results obtained by CFD model.

Original languageEnglish
Pages (from-to)403-412
Number of pages10
JournalJournal of the Energy Institute
Volume92
Issue number3
DOIs
Publication statusPublished - Jun 2019

Keywords

  • Biomass gasification
  • CFD simulation
  • Compartmental modelling
  • Hydrodynamics
  • RTD analysis

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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