Paper Title:
Selection of Ceramics and Composites as Materials for a Supercritical Water Gasification (SCWG) Reactor
  Abstract

In the presence of supercritical water, organic materials are converted into energetic gas, with high hydrogen content. In the present application, thermochemical conversion of humid wastes from wine or sugar production is reached at temperatures and pressures up to 550°C and 250 bars. Material is a key point for the development of SCWG process operating in such conditions. In supercritical water the durability of metals and alloys is limited by corrosion, but ceramics and ceramic composites are known to be stable under extreme conditions. For this reason, we have proceeded to an examination of a selection of ceramic materials that could be used as an anticorrosive wall of the gasification reactor. We show that, ultra-high temperature ceramics Si3N4, BN, Al2O3 and SiC are strongly corroded by humid waste, but carbon-based materials are resistant in both subcritical and supercritical conditions in the presence of pure or waste water. As a conclusion, graphite may be a very good material for SCWG reactor.

  Info
Periodical
Edited by
Pietro VINCENZINI, Cynthia POWELL, Marco VITTORI ANTISARI, Vincenzo ANTONUCCI and Fausto CROCE
Pages
129-134
DOI
10.4028/www.scientific.net/AST.72.129
Citation
T. Richard, J. Poirier, "Selection of Ceramics and Composites as Materials for a Supercritical Water Gasification (SCWG) Reactor ", Advances in Science and Technology, Vol. 72, pp. 129-134, 2010
Online since
October 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Lei Zhe Chu, Xiao Xu Fan, Li Guo Yang, Xiao Jun Wu
Chapter 4: Development and Utilization of Biomass Energy
Abstract:Because of quite a certain content of alkali metal in biomass, bed material agglomeration appears in the process of thermal reaction in...
2493
Authors: Kui Peng, Hong Xu Li
Chapter 7: Hydrogen and Fuel Cell
Abstract:Hydrogen production by biomass gasification in supercritical water has special different distinct characteristics and advantage, this...
1404
Authors: Xin Liu, Zhi Guo Tang, Pei Yong Ma, Xian Guo Hu
Chapter 05: Composite Materials
Abstract:In this paper, A novel domestic straw gasifier, with an inner U-shaped tube in which porous ceramics was placed to crack the tar carried by...
423
Authors: Muhammad Iqbal Ahmad, Zainal Alimuddin Zainal Alauddin, Shahril Nizam Mohamed Soid, Mohamed Mazlan, Mohd Huzaifah Yusoff
Abstract:Biomass is one of the alternatives energy which are abundant, relatively cheap, and widespread availability. This paper is aim to show the...
1020
Authors: Jing Hui Song, Yan Fen Liao, Zhi Gang Fan, Shu Mei Wu, Xiao Qian Ma
Chapter 2: Development and Utilization of Biomass Energy
Abstract:Eucalyptus broken wood, eucalyptus bark, sugar cane leaves and bagasse as the representative of South China typical biomass have been...
390