Catalytic combustion device emitting infrared radiation

A device for a surface emission of infrared radiation, by combustion of a gaseous mixture comprising a combustible component and an oxidizer gas to create heat, said device comprising:

• a catalytic combustion wall made of refractory material which is permeable through a thickness of the catalytic combustion wall and with at least an internal developed surface coated with a catalytic combustion material wherein the catalytic combustion wall is arranged for passage of the gaseous mixture to be burnt from an upstream face to a downstream face;
• a heat exchanger made of refractory material which is permeable through a thickness of the heat exchanger and arranged for passage of the gaseous mixture to be burnt, wherein the heat exchanger is located upstream of the catalytic combustion wall, and disposed with respect to said catalytic combustion wall to form therebetween a first intermediate functional gap, said heat exchanger being also arranged so as to receive via the downstream face of the heat exchanger at least most of the heat radiated by the upstream face of said catalytic combustion wall, and to deliver at least part of said received heat to said gaseous mixture, passing through said heat exchanger and a length of the heat exchanger is at least 5 cm;
• and
• a diffusing wall placed upstream of and in contact with the heat exchanger, the diffusing wall, made of refractory material, also being permeable through a thickness and suitable for passage of the gaseous mixture to be burnt.

A device for a surface emission of infrared radiation, by combustion of a gaseous mixture comprising a combustible component and an oxidizer gas to create heat, said device comprising:

• a catalytic combustion wall made of refractory material which is permeable through a thickness of the catalytic combustion wall and with at least an internal developed surface coated with a catalytic combustion material wherein the catalytic combustion wall is arranged for passage of the gaseous mixture to be burnt from an upstream face to a downstream face;
• a heat exchanger made of refractory material which is permeable through a thickness of the heat exchanger and arranged for passage of the gaseous mixture to be burnt, wherein the heat exchanger is located upstream of the catalytic combustion wall, and disposed with respect to said catalytic combustion wall to form therebetween a first intermediate functional gap, said heat exchanger being also arranged so as to receive via the downstream face of the heat exchanger at least most of the heat radiated by the upstream face of said catalytic combustion wall, and to deliver at least part of said received heat to said gaseous mixture, passing through said heat exchanger and the heat exchanger is arranged to increase a temperature of the gaseous mixture to be burnt, from the upstream face to the downstream face of said heat exchanger, by an amount of at least 500° C.;
• and
• a diffusing wall placed upstream of and in contact with the heat exchanger, the diffusing wall, made of refractory material, also being permeable through a thickness and suitable for passage of the gaseous mixture to be burnt.

A device for a surface emission of infrared radiation, by combustion of a gaseous mixture comprising a combustible component and an oxidizer gas to create heat, said device comprising:

• a catalytic combustion wall made of refractory material which is permeable through a thickness of the catalytic combustion wall and with at least an internal developed surface coated with a catalytic combustion material wherein the catalytic combustion wall is arranged for passage of the gaseous mixture to be burnt from an upstream face to a downstream face;
• a heat exchanger made of refractory material which is permeable through a thickness of the heat exchanger and arranged for passage of the gaseous mixture to be burnt, wherein the heat exchanger is located upstream of the catalytic combustion wall, and disposed with respect to said catalytic combustion wall to form therebetween a first intermediate functional gap, said heat exchanger being also arranged so as to receive via the downstream face of the heat exchanger at least most of the heat radiated by the upstream face of said catalytic combustion wall, and to deliver at least part of said received heat to said gaseous mixture, passing through said heat exchanger and a temperature of said gaseous mixture is increased within said heat exchanger by an amount comprised between 500 and 1000° C.;
• and
• a diffusing wall placed upstream of and in contact with the heat exchanger, the diffusing wall, made of refractory material, also being permeable through a thickness and suitable for passage of the gaseous mixture to be burnt.