Abstract

b) is arranged to inject fuel and/or air in a tangential direction into the generally upstream part of the fuel-evaporating device (130) such that a rotational flow is obtained therein. Moreover, the generally upstream end of the fuel-evaporating device (130) is arranged in the vicinity of the at least one catalytic element (140).

IPC Classes  ?

• F23D 11/44 - Preheating devicesVaporising devices
• F23C 13/02 - Apparatus in which combustion takes place in the presence of catalytic material characterised by arrangements for starting the operation, e.g. for heating the catalytic material to operating temperature

Abstract

A catalytic combustor (1) is provided for combustion of gaseous and liquid fuels, which combustor comprises a housing (2) having an inlet (3) and an outlet (4) through which an airflow is directed, and a fuel injector (10) for injecting fuel in the airflow. The combustor also comprises at least one catalytic element (12, 14, 15) for combusting the mixture of air and fuel. A fuel-evaporating device (7) is arranged for evaporating a liquid fuel, which device is heated by the catalytic element (12), either through combustion therein or by means of an electrical heating element (13) arranged adjacent thereto.

IPC Classes  ?

• F23D 11/44 - Preheating devicesVaporising devices
• F23D 3/40 - Burners using capillary action the capillary action taking place in one or more rigid porous bodies
• F23D 14/12 - Radiant burners
• F23C 9/00 - Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
• F23C 13/04 - Apparatus in which combustion takes place in the presence of catalytic material characterised by the arrangement of two or more catalytic elements in series connection
• F23C 13/02 - Apparatus in which combustion takes place in the presence of catalytic material characterised by arrangements for starting the operation, e.g. for heating the catalytic material to operating temperature
• F23Q 7/06 - Igniters structurally associated with fluid-fuel burners

Abstract

A heating device (100) for combustion of liquid fuels comprises at least one catalytic element (140) for catalytically burning a mixture of fuel and air, a fuel supply means (133) being disposed on an upstream side of said first catalytic element (140) and an air supply means (132) being disposed on an upstream side of said at least one catalytic element (140). A fuel-evaporating device (130) has a substantially axisymmetric shape and an upstream end and a downstream end. The fuel-evaporating device is heated, during operation, by the at least one catalytic element (140), and is supplied with fuel and air from the fuel supply means (133) and the air supply means (132). The heating device also comprises an outer housing (110), for containing said catalytic element (140) and said fuel-evaporating device (130). The fuel -evaporating device (130) is provided with at least one inner inlet pipe (132; 132b) in the generally upstream end thereof. The pipe (132; 132b) is arranged to inject fuel and/or air in a tangential direction into the generally upstream part of the fuel -evaporating device (130) such that a rotational flow is obtained therein. Moreover, the generally upstream end of the fuel- evaporating device (130) is arranged in the vicinity of the at least one catalytic element (140),

IPC Classes  ?

• F23C 13/00 - Apparatus in which combustion takes place in the presence of catalytic material
• F23C 13/02 - Apparatus in which combustion takes place in the presence of catalytic material characterised by arrangements for starting the operation, e.g. for heating the catalytic material to operating temperature
• F23D 14/18 - Radiant burners using catalysis for flameless combustion

Abstract

A heating device (100) for combustion of liquid fuels comprises at least one catalytic element (140) for catalytically burning a mixture of fuel and air, a fuel supply means (133) being disposed on an upstream side of said first catalytic element (140) and an air supply means (132) being disposed on an upstream side of said at least one catalytic element (140). A fuel-evaporating device (130) has a substantially axisymmetric shape and an upstream end and a downstream end. The fuel-evaporating device is heated, during operation, by the at least one catalytic element (140), and is supplied with fuel and air from the fuel supply means (133) and the air supply means (132). The heating device also comprises an outer housing (110), for containing said catalytic element (140) and said fuel-evaporating device (130). The fuel -evaporating device (130) is provided with at least one inner inlet pipe (132; 132b) in the generally upstream end thereof. The pipe (132; 132b) is arranged to inject fuel and/or air in a tangential direction into the generally upstream part of the fuel -evaporating device (130) such that a rotational flow is obtained therein. Moreover, the generally upstream end of the fuel- evaporating device (130) is arranged in the vicinity of the at least one catalytic element (140),

IPC Classes  ?

• F23C 13/00 - Apparatus in which combustion takes place in the presence of catalytic material
• F23C 13/02 - Apparatus in which combustion takes place in the presence of catalytic material characterised by arrangements for starting the operation, e.g. for heating the catalytic material to operating temperature
• F23D 14/18 - Radiant burners using catalysis for flameless combustion