Title:
Design of a High Temperature Chamber Fed by a Plasma Torch for Thermal Removal of Tars: First Results
Author(s):
Fourcault, A., Marias, F., Michon, U.
Document(s):
Paper
Abstract:
This work deals with the modelling of a high temperature chamber heated with a plasma gas and which is devoted to the cracking of tars produced during gasification of biomass. This reformer (TurboplasmaŠ) is a part of a more general process devoted to the production of electricity from biomass. In a first stage biomass is dried and gasified in a travelling bed gasifier using air with an equivalence ratio of 0.3. This product gas contains light hydrocarbons as well as tars. It is converted into a syngas free from tars in the reformer under investigation in the present study. The plasma torch produces a 5000K plasma gas. This allows to locally heat the incoming stream at a temperature higher than 1600K, thus, with an adequate residence time, an efficient degradation of tars occurs. The first step of this work is the development of a kinetic model to describe the thermal cracking of tars. Thanks to a bibliographic study model component for tar has been chosen, and a kinetic scheme has been established. Then this kinetic model is implemented in a complete CFD computation. The aerodynamic behavior of the vessel can be well understood and thus its design can be improved.
Keywords:
hot gas cleaning, modelling, tar removal, modeling
Topic:
Thermochemical conversion - Gasification for power and CHP and polygeneration
Subtopic:
Fundamentals and studies
Event:
18th European Biomass Conference and Exhibition
Session:
OA1.2
Pages:
548 - 556
ISBN-13:
978-88-89407-56-1
ISBN-10:
88-89407-56-5
Paper DOI:
10.5071/18thEUBCE2010-OA1.2
Price:
FREE
