PL409295A1 - Method and a power gas burner for firing the low-BTU gas with high inlet temperature - Google Patents

Abstract

The method of combustion of low calorific gas with a high inlet temperature, intended especially for afterburning of anode gases from solid oxide fuel cells, is characterized by the fact that the oxidant stream is divided into the primary oxygen stream and fed through the inlet to the pipe (3), concentrically mounted inside the first cylinder (10) made of porous material, preferably SiC silicon carbide, embedded in a pipe (7) fed with low calorific gas with a high temperature above 800 ° C, and then it is metered gradually into the porous material of the cylinder (10) by means of circumferential nozzles (4a, 4b, 4c) on the pipe (3), located along its length, and the secondary oxygen stream is supplied through the inlet to the injection nozzles, located on the periphery of the pipe (7), in the place of contact connection of the bases of the first cylinder (10) and the second cylinder (11) with twice the diameter , mounted concentrically in the pipe (8). In addition, the burner is equipped with a cooling system (19) with an inlet through which a stream of cooling air is introduced, forcing by means of spiral elements (15a, 15b) a circumferential flow of cooling air between the pipe (7) supplying low calorific gas at a temperature above 800 ° C , and a pipe (8) surrounding the roller (11) and between the pipe (8) surrounding the roller (11) and the outer pipe (9) of the housing.