Journal ArticleDOI
Sensitivity analysis and chemical reaction mechanism simplification of blast furnace gas in gas turbine combustor environment
TLDR
In this paper, the sensitivity of elementary reaction to combustion rate was analyzed by using one dimensional laminar premixed reactor model, and the reduced 18-step mechanism which is specified to 0.1-3 Mpa was used to solve the lack of reduced BFG mechanism under elevated pressure environment in numerical simulation.Abstract:
To solve the lack of reduced Blast furnace gas (BFG) mechanism under elevated pressure environment in numerical simulation, the present paper analyzes the sensitivity of every elementary reaction to combustion rate by using one dimensional laminar premixed reactor model. The steps with sensitivities larger than 0.1 are selected and the chemical kinetic parameters are revised by the method of weighted least squares fitting. The reduced 18-step mechanism which is specified to 0.1-3 Mpa is validated for laminar flame speeds, ignition delay times with available experiment data and GRI3.0 mechanism. Moreover, both the reduced and DRM-22 mechanisms are introduced into an experimental burner and an industrial gas turbine combustor simulation. The results of temperature and main species distribution illustrate that the 18-step mechanism is able to give a reasonable prediction combustion simulation. The 18-step mechanism lays the foundation of further studying the combustion of the low calorific value fuels at high pressure conditions.read more
Citations
More filters
Journal ArticleDOI
Comparative analysis of detailed and reduced kinetic models for CH 4 + H 2 combustion
TL;DR: In this article, two detailed kinetic mechanisms, namely AramcoMech 2.0 and recently updated Konnov mechanism, were validated using available measurements of ignition delay times and laminar burning velocities for hydrogen, methane and hydrogen+methane fuel mixtures.
Journal ArticleDOI
A tangent linear approximation of the ignition delay time. I: Sensitivity to rate parameters
TL;DR: In this paper, a tangent linear approximation is developed to estimate the sensitivity of the ignition delay time with respect to individual rate parameters in a detailed chemical mechanism, which is based on integrating the linearized system of equations governing the evolution of the partial derivatives of the state vector.
Journal ArticleDOI
Generation of skeletal and reduced reaction mechanisms for bio-derived syngas generated from biomass gasification – Experimental and numerical approach
TL;DR: In this article , a skeletal and reduced reaction mechanism for bio-derived Producer gas and Hydrogen-rich Syngas was developed using GRI Mech 3.0 mechanism and a flame tube apparatus built in-house to mimic a freely propagating double infinity domain premixed reactor.
References
More filters
ReportDOI
Chemkin-II : A Fortran Chemical Kinetics Package for the Analysis of Gas Phase Chemical Kinetics
Journal ArticleDOI
Evaluated Kinetic Data for Combustion Modelling
Donald L. Baulch,Carlos J. Cobos,Richard A. Cox,C. Esser,P. Frank,Th. Just,J. A. Kerr,Michael J. Pilling,Jürgen Troe,Raymond W. Walker,J. Warnatz +10 more
TL;DR: In this paper, the authors present a compilation of critically evaluated kinetic data on elementary homogeneous gas phase chemical reactions for use in modelling combustion processes Data sheets are presented for some 196 reactions each data sheet sets out relevant thermodynamic data, rate coefficient measurements, an assessment of the reliability of the data, references and recommended rate parameters Tables summarizing the preferred rate data are also given
ReportDOI
CHEMKIN-III: A FORTRAN chemical kinetics package for the analysis of gas-phase chemical and plasma kinetics
TL;DR: This document is the user`s manual for the third-generation CHEMKIN package, which now has the capability to handle weakly ionized plasma chemistry, especially for application related to advanced semiconductor processing.
Journal ArticleDOI
A comprehensive kinetic mechanism for CO, CH2O, and CH3OH combustion
TL;DR: In this paper, a new experimental profile of stable species concentrations is reported for formaldehyde oxidation in a variable pressure flow reactor at initial temperatures of 850-950 K and at constant pressures ranging from 1.5 to 6.0 atm.
Journal ArticleDOI
An optimized kinetic model of H2/CO combustion
TL;DR: In this paper, a H2-CO kinetic model was proposed to predict a wide variety of H2 and CO combustion data, from global combustion properties (shock-tube ignition delays, laminar flame speeds, and extinction strain rates) to detailed species profiles during H 2 and CO oxidation.