Experimental study of the structure of rich premixed 1,3-butadiene/CH4/O2/Ar flame

TL;DR

This study investigates the detailed chemical structure and species concentration profiles of a rich premixed 1,3-butadiene/CH4/O2/Ar flame at low pressure, providing comprehensive experimental data on stable combustion products.

Contribution

It provides detailed experimental measurements of species concentrations and temperature profiles in a rich premixed flame containing 1,3-butadiene, methane, oxygen, and argon, which is novel for this specific mixture.

Findings

Species concentration profiles of over 20 compounds measured

Temperature range from 900 K to 2100 K documented

Data enhances understanding of combustion chemistry of 1,3-butadiene/CH4/air mixtures

Abstract

The structure of a laminar rich premixed 1,3-C4H6/CH4/O2/Ar flame have been investigated. 1,3-Butadiene, methane, oxygen and argon mole fractions are 0.033; 0.2073; 0.3315, and 0.4280, respectively, for an equivalent ratio of 1.80. The flame has been stabilized on a burner at a pressure of 6.7 kPa (50 Torr). The concentration profiles of stable species were measured by gas chromatography after sampling with a quartz probe. Quantified species included carbon monoxide and dioxide, methane, oxygen, hydrogen, ethane, ethylene, acetylene, propyne, allene, propene, cyclopropane, 1,3-butadiene, butenes, 1-butyne, vinylacetylene, diacetylene, C5 compounds, benzene, and toluene. The temperature was measured thanks to a thermocouple in PtRh (6%)-PtRh (30%) settled inside the enclosure and ranged from 900 K close to the burner up to 2100 K.