Abstract: An arrangement for adjusting the ratio between supplied amounts of fuel (PA) and air (I) in a burner, which is intended for a gaseous and/or liquid fuel is disclosed. The burner comprises a fuel and air mixing zone, a fuel supply conduit adapted to supply the mixing zone with a given inlet flow of fuel, a combustion air supply means adapted to supply the mixing zone with a given inlet flow of combustion air, and burner automation. The burner automation contains measuring instruments. The burner has its mixing zone accompanied by a combustion chamber which is in communication with a flue gas conduit. The combustion chamber or flue gas conduit has at least one catalytic zone. In the arrangement, the measuring instruments include at least one sensor, such as a lambda sensor, measuring the amount of residual oxygen in flue gases (flue gas oxidation/reduction potential).

Abstract: An arrangement for adjusting the ratio between supplied amounts of fuel (PA) and air (I) in a burner, which is intended for a gaseous and/or liquid fuel is disclosed. The burner comprises a fuel and air mixing zone, a fuel supply conduit adapted to supply the mixing zone with a given inlet flow of fuel, a combustion air supply means adapted to supply the mixing zone with a given inlet flow of combustion air, and burner automation. The burner automation contains measuring instruments. The burner has its mixing zone accompanied by a combustion chamber which is in communication with a flue gas conduit. The combustion chamber or flue gas conduit has at least one catalytic zone. In the arrangement, the measuring instruments include at least one sensor, such as a lambda sensor, measuring the amount of residual oxygen in flue gases (flue gas oxidation/reduction potential).

Abstract: A method for reducing nitrogen oxide(s) and carbon monoxide from flue gases of an industrial burner adapted to burn gaseous and/or liquid fuel is disclosed. The burner comprises burner automation containing measuring instruments, and a mixing zone accompanied by a combustion chamber. The burner automation is in communication with measurement instruments of flue gas conduit. The combustion chamber or flue gas conduit has two catalytic zones of at least one three-way catalytic converter(s). The catalytic zones are successive in progressing direction of flue gases. An inlet flow (QI, QItot) of combustion air and an inlet flow (QPA, QPAtot) of fuel is delivered into the mixing zone. The flue gases are generated in the combustion chamber by combusting air and fuel delivered into the mixing zone. The amount of residual oxygen is measured in flue gases by a lambda-sensor. The flue gases are directed to at least one three-way catalytic converter(s).

Abstract: A method and apparatus for burning hydrocarbons or other combustible liquids and gases, the apparatus (APP) has been provided with at least one inlet for a liquid and/or gaseous fuel (FUE) and air (AIR) and at least one outlet (EXHG) for gases for removing the gases (EXHG) generated in the apparatus (APP), at least one measurement and adjustment unit (C) for adjusting the amount of fuel (FUE) and air (AIR), at least one pre-combustion zone (Cz11, Cz12, Tz1) for the partial combustion of gases, and at least one post-combustion zone (Tz2, Cz21, Cz22) for the combustion of gases generated in pre-combustion, for the reduction of NOx's produced in pre-combustion, and/or for the oxidation of hydrocarbon and carbon monoxide emissions.