Design and Evaluation Measurements of a Swirl Stabilized Laboratory Burner

Abstract

This article presents gas velocity and temperature measurements obtained in a versatile multi-fuel swirl-stabilized laboratory burner of 100 kW total thermal input, which was designed as a scale model of a 110 MW coal burner operating in a cement rotary kiln. The laboratory burner is able to produce flames with different aerodynamic characteristics, namely, the independent adjustment of swirl to axial air and to burn a combination of gaseous, liquid, and pulverized solid fuels; only gaseous fuel, i.e. methane, was used in the present investigation. Experimental measurements were obtained in the near-burner region, with and without combustion, under varying operating conditions. The present investigation was mainly focused on the effect of swirl and its interaction with the combustion process.

A comparative study of the effect of varied reaction environments on a swirl stabilized flame geometry via optical measurements

“…10.1, and should be referenced in regard to the discussion presented in this sub-section. The burner exit jet (21 mm inner diameter and 27 mm outer diameter) receives a steady flow of fuel and air in a separated coaxial arrangement, which is allowed to mix 12 mm upstream of the burner exit nozzle [37]. The burner used in this study differs from conventional research burners that are used to isolate chemical kinetic processes in flames (for example [38][39][40]) in that a specially designed air stream geometry is used directly upstream of the burner exit nozzle that creates a swirling flow downstream of the burner exit nozzle.…”