초록 ▼

The invention concerns a two-stage catalytic burner (1) with at least one feed (3) for a hydrogen or hydrocarbon-containing fuel gas and at least one feed (17) for a combustion gas such as oxygen or air, two combustion stages (15, 16), the second (16) of which is a monolithic burner through which th

The invention concerns a two-stage catalytic burner (1) with at least one feed (3) for a hydrogen or hydrocarbon-containing fuel gas and at least one feed (17) for a combustion gas such as oxygen or air, two combustion stages (15, 16), the second (16) of which is a monolithic burner through which the mixture of gases leaving the first stage (15) passes, and a heat exchanger (8) connected to the burner (1). The first combustion stage (15) is a diffusion burner in which a chamber (6) containing fuel gas is separated from the chamber (7) containing combustion gas by a catalytic layer (burner element 4) which is permeable to the fuel gas. The burner element (4) is made of highly porous catalytically active material with a porosity of >50% and pore size of 0.001 to 100 .mu.m and has a thickness of 0.05 to 10 mm. The fuel gas is fed into chamber (6) and the combustion gas into chamber (7).

대표청구항 ▼

[ What is claimed is:] [1.] A two-stage catalytic burner comprising:at least one feed for one of a hydrogen and hydrocarbon-containing fuel gas;at least one feed for a combustion gas including at least one of oxygen and air;a first and second combustion stage;the second combustion stage comprising a

[ What is claimed is:] [1.] A two-stage catalytic burner comprising:at least one feed for one of a hydrogen and hydrocarbon-containing fuel gas;at least one feed for a combustion gas including at least one of oxygen and air;a first and second combustion stage;the second combustion stage comprising a monolithic burner that passes a mixture of gases leaving the first combustion stage;a heat exchanger enclosing the first and second combustion stages;the first combustion stage comprising a diffusion burner having a first chamber supplied with the fuel gas and a second chamber supplied with the combustion gas;the first and second chambers being separated by a catalytic layer permeable to the fuel gas;the catalytic layer comprising a burner element comprising a highly porous catalytically active material with a porosity of greater than approximately 50% and pore size of approximately 0.001 to 100 .mu.m and a thickness of approximately 0.05 to 10 mm.