Patent application number | Description | Published |
20090148797 | Method for Carrying Out combined Burning in a Recovering Furnace - The invention relates to a burning method carried out in furnace provided with energy recovering means and burners, wherein a part of burners are embodied in the form of aero-combustible burners and the other part thereof are embodied in the form of oxy-combustible burners which are placed under the air ducts of the aero-combustible burners and carry out a staged combustion method. | 06-11-2009 |
20090239182 | COMBUSTION METHOD WITH CYCLIC SUPPLY OF OXIDANT - The invention concerns a combustion method for industrial furnace comprising an arrangement of two substantially parallel and symmetrical burner assemblies (G, D). Each burner assembly comprises a fuel injector (10G, 10D) and three oxidant injectors (1G, 2G, 3G, 1D, 2D, 3D) arranged at increasing distances from the fuel injector. An oxidant supply system cyclically distributes a specific flow of oxidant among some at least of the second and third injectors of the burner assemblies (2G, 3G, 2D, 3D). The amount of nitrogen monoxide produced upon combustion is thus reduced, while ensuring a good distribution of the heating power in the furnace. | 09-24-2009 |
20100009301 | Staged Oxyfuel Combustion Method Using Pre-Heated Reagents - The invention relates to a staged oxyfuel combustion method in which a combustion chamber is injected with a jet of fuel inside a jet of primary oxygen gas which is introduced through a hole having a diameter D and a secondary oxygen gas which is introduced through a hole having a diameter d, which is positioned at a distance l from the hole for the primary oxygen gas. According to the invention, the jet of fuel emerges at a distance r set back from the wall of the combustion chamber. The oxygen-rich oxygen gas is pre-heated to a temperature of at least 300° C. The r/D ratio is between 5 and 20 or between 0.75 and 3 and the l/d ratio is at least 2. | 01-14-2010 |
20100068665 | STAGED COMBUSTION METHOD REPRODUCING ASYMMETRIC FLAMES - The invention concerns a method for burning a fuel by means of at least one a burner, each burner comprising two half-assemblies ( | 03-18-2010 |
20100310996 | COMBUSTION METHOD AND SYSTEM - The invention relates to a method for heating a material in a zone heated by combustion of a fuel with an oxidant by means of a oxyburner comprising an injector arranged within a block defining a chamber with a confinement index Iconf=(S/S′)×(L/L′)×(1/(1+a/100))=0.10; the fuel being injected into the burner chamber with a rate IF and the oxidant being injected into the burner chamber at a rate Iox such that 0.7=IF=3.6 et 0.3=Iox=5.1, provided that when Iox>3.8 then IF=3.3. | 12-09-2010 |
20100316969 | Method of Heating a Mineral Feedstock in a Firing Furnace of the Tunnel Furnace Type - Method of heating a mineral feedstock in a firing furnace of the tunnel furnace type, having a hearth with an upstream inlet, a downstream outlet and sidewalls fitted with burners, in which method the feedstock is transported as a layer of approximately constant thickness along a treatment path in which the feedstock is heated and fired by means of said burners so as to obtain a fired product, said path being located between the upstream inlet and the downstream outlet of the furnace, characterized in that said burners comprise at least one fuel injector and at least one oxidizer injector and are positioned and oriented in such a way that their flames do not impact the layer, the at least one oxidizer injector being positioned relative to the at least one fuel injector so that the at least one fuel jet injected by the at least one fuel injector is separated from the layer by at least one oxidizer jet injected by at least one oxidizer injector. | 12-16-2010 |
20110104625 | POWER SUPPLY FOR HOT OXYGEN BURNER - The present invention relates to the supplying power to burners for oxy-fuel combustion glass melting furnaces, including a fuel injecting means and a hot oxygen power supplying means, the dispensing of oxygen being carried out so as to develop a staged combustion, a fraction of the oxygen being concurrently injected into the fuel, said oxygen being supplied essentially without heating prior to the supplying thereof into the fuel injecting means. | 05-05-2011 |
20120210917 | Solid Fuel Burner - Burner for conveyor gas propelled particulate solid fuel, said burner comprising a burner block and an injector assembly, the injector assembly being at least partially surrounded by an injector passage of the burner block, the injector assembly comprising an inner oxygen supply pipe surrounding a fuel injector, which in turn surrounds an oxygen injector, each having a downstream end on the side of the passage outlet, the inner oxygen supply pipe having a lateral surface onto which are mounted a set of lateral primary oxygen nozzles for the injection of lateral jets of primary oxygen into the fuel injector with an injection orientation which follows a same sense of rotation around the longitudinal direction and which is directed towards the downstream end of the fuel injector, said lateral primary oxygen nozzles being positioned at a number of different distances from the downstream end of the fuel injector. | 08-23-2012 |
20130125707 | Process for Melting Scrap Metal - Process for melting scrap metal in a furnace comprising the steps of feeding a charge of solid scrap metal to the furnace, supplying fuel and an oxygen-rich oxidant to the furnace and combusting the fuel with the oxidant to generate heat inside the furnace, melting the charge of solid scrap metal in the furnace by means of the heat, withdrawing the molten metal from the furnace. Following the step of feeding the charge of solid scrap metal to the furnace, the fuel is combusted with the oxidant so as to generate one or more visible flames in the furnace above the charge and before the step of withdrawing the molten metal from the furnace, the fuel is combusted with the oxidant so as to generate flameless combustion in the furnace above the molten metal. | 05-23-2013 |
20140004469 | Low NOx Combustion Process and Burner Therefor | 01-02-2014 |