Ring burner for the manufacture of mineral fibers

Abstract

The present invention relates to an annular burner for the manufacture of mineral fibers, comprising a combustion chamber and a nozzle, the combustion chamber and the nozzle having rotational symmetry about a principal axis, the nozzle fluidly connecting the combustion chamber to the exterior of the burner, the burner comprising injectors, the number of injectors being strictly greater than five, each injector being adapted to inject a mixture of fuel and oxidizer into the combustion chamber, the injectors being distributed around the combustion chamber, the combustion chamber having a first volume, the burner being characterized in that the ratio between the first volume and the number of injectors is between 725 cm³ and 900 cm³. FIG. 1

Claims

proximal wall located between injector 6 and outlet wall 11 and / or by outlet wall 11.

14. Burner (1) according to any one of claims 12 to 13, comprising a mirror (24) arranged outside the combustion chamber at the outlet of the passage (16), the mirror being arranged so as to optically align a flame generated in the combustion chamber (3) and the detector (14).

15. Installation (18) for the production of mineral fibers (2) comprising: - an annular burner (1) according to any one of claims 1 to 14, - a fiber-forming plate (19) having orifices (20), adapted to receive molten mineral material, and adapted to form filaments (21) of the mineral material from the orifices (20) by centrifugation of the plate (19).

16. Installation (18) according to the preceding claim, wherein the burner (1) comprises: - the first fluid inlet, the first fluid inlet being configured to receive a first fluid (22) at a first flow rate, the first fluid (22) comprising a fuel, the fuel comprising dihydrogen, a volume fraction of dihydrogen in the first fluid (22) being greater than 0.05, the first fluid inlet being fluidly connected to the combustion chamber (3) by the injectors (6), and - a third fluid inlet configured to receive a second fluid (23) at a second flow rate, the second fluid (23) having a volume fraction of oxygen greater than 0.10, the third fluid inlet being fluidly connected to the combustion chamber (3) by the injectors (6),the installation (18) comprising a control unit configured to control the first flow rate of the first fluid and the second flow rate of the second fluid so that the pressure PB in the combustion chamber is between 1961 Pa (200 mm CE) and 7845 Pa (800 mm CE). iiiiiiiiii

Images