Application of the GRI 1.2 Methane Oxidation Model to Methane and Methanol Oxidation in Supercritical Water
Abstract
The Gas Research Institute (GRI) has been leading an effort over the past few years to consolidate recent developments in the elementary reaction modeling of the oxidation of methane for combustion applications into a single optimized set of reactions within a standard computational framework. Our interest in the translation of combustion-based models to oxidation in supercritical water has led us to examine the applicability of this mechanism to the low-temperature high-density conditions of supercritical water oxidation at 25 MPa and 400-650 deg C. This paper shows that the GRI 1.2 mechanism accurately represents the available experimental results on methane over a wide temperature and concentration range. The oxidation of methanol is not well represented by the GRI mechanism when left unchanged. However, if a key modification is made to the reactivity of HO2, good agreement with the methanol oxidation results is achieved. Although designed for conventional combustion conditions, the GRI mechanism can be successfully extended with very little modification to much lower temperature and extreme pressure conditions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1997
- Accession Number
- ADA348827
Entities
People
- Steven F. Rice
Organizations
- Sandia National Laboratories