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| Number | Title | Issue Date |
| 7946129 | Reducing crown corrosion in a glassmelting furnace Corrosion of the inner surface of the crown of a glassmelting furnace is reduced or avoided by directing at low velocity along that surface a gaseous stream comprising water vapor, or comprising the combustion products of an oxy-fuel burner operated at a stoichiomet... | 05/24/2011 |
| 7621154 | Solid fuel combustion for industrial melting with a slagging combustor A method for supplying heat to a melting furnace for forming a molten product using ash-containing fuels. A fuel having an ash component is introduced into a slagging chamber of a slagging combustor and at least partially combusted with a first oxidant mixture and a... | 11/24/2009 |
| 7409838 | Reducing corrosion and particulate emission in glassmelting furnaces A glassmelting furnace is heated by combustion of fuel having an atomic ratio of hydrogen to carbon of 0.9 or less. ... | 08/12/2008 |
| 7296440 | Device and method for melting glass When waste glass that is strongly laden with organic impurities is melted, the organic constituents present in the melt give rise to so-called “black hearts” which can no longer be eliminated in a subsequent refining process, thus impairing the quality of the gl... | 11/20/2007 |
| 7273583 | Process and apparatus for uniform combustion within a molten material A submerged combustion burner having co-axial fuel and oxidant tubes forming an annular space therebetween, wherein the outer tube extends beyond the end of the inner tube. A burner nozzle having an outside diameter corresponding to the inside diameter of the outer ... | 09/25/2007 |
| 7225746 | Low NOx combustion Combustion of hydrocarbon liquids and solids is achieved with less formation of NOx by feeding a small amount of oxygen into the fuel stream. ... | 06/05/2007 |
| 7206490 | Electro-optic polymer waveguide devices incorporating organically modified sol-gel clads Electro-optic waveguide devices that comprise an electro-optic polymer core and a polymer buffer clad. The polymer buffer clad comprises an organically modified sol-gel and has a refractive index lower than the refractive index of the core. ... | 04/17/2007 |
| 7191619 | Process for producing glass and glass-melting apparatus thereof A process for producing a high-quality glass from highly reactive raw materials and a glass-melting apparatus for use therewith, comprising the step of charging a material for the glass to a molten glass in a heated vessel, (1) wherein an oxidizing gas is bubbled in... | 03/20/2007 |
| 7168269 | Gas injection for glass melting furnace to reduce refractory degradation A glass melting furnace has a gas inlet positioned proximate to a charging section oxy-fuel combustion region to introduce gas into the region and to at least partially displace gas having a partial pressure of alkali vapor from the region, and optionally a gas outl... | 01/30/2007 |
| 7143610 | Method and system for feeding and burning a pulverized fuel in a glass melting furnace, and burner for use in the same A method and system feed and burn pulverized fuel, such as petroleum coke, in a glass melting furnace having burners associated with sealed regenerative chambers which act as heat exchangers. The system supplies the pulverized fuel for melting glass raw materials. T... | 12/05/2006 |
| 7134300 | Method for controlling foam production in reduced pressure fining A method for controlling the foam produced when a molten material encounters reduced pressure in a vacuum chamber includes passing the molten material through an aging zone in the vacuum chamber in which the molten material is allowed to drain from between the bubbl... | 11/14/2006 |
| 7107794 | Suction feeder The suction feeder for glass processing includes a housing containing a material; a heatable noble metal or noble metal alloy feed line embedded in the housing in a thermally insulated fashion; a connection element at one end of the feed line for connection with a m... | 09/19/2006 |
| 7021082 | Method and apparatus for suppressing oxygen bubble formation in glass melts In the method of making glass a glass melt is formed from starting materials in a melt apparatus, which includes at least one metal part having a metal surface in contact with the glass melt in a first region of the glass melt having a predetermined oxygen partial p... | 04/04/2006 |
| 7014458 | High velocity injection of enriched oxygen gas having low amount of oxygen enrichment Methods and apparatus for combustion of a hydrocarbon fuel in a combustion chamber of a furnace or boiler are presented, the combustion normally using only air as an oxidant, part of the air entering the combustion chamber through one or more burners, and a remainin... | 03/21/2006 |
| 7010940 | Process for producing glass and glass-melting apparatus thereof A process for producing a high-quality glass from highly reactive raw materials and a glass-melting apparatus for use therewith, comprising the step of charging a material for the glass to a molten glass in a heated vessel, (1) wherein an oxidizing gas is bubbled in... | 03/14/2006 |
| 6978726 | Combustion with reduced carbon in the ash Combustion of coal in which oxygen is injected into the coal as it emerges from burner produces ash having reduced amounts of carbon. ... | 12/27/2005 |
| 6945077 | Method for treating steel plant slag A method is presented for the treatment of slag from electric steel plants which comprises the following steps: (a) transference of the slag into a metallurgical receptacle; (b) defoaming of the slag in this metallurgical receptacle by adding a defoaming agent, pref... | 09/20/2005 |
| 6939125 | Method for reducing nitrogen oxides in combustion gas from combustion furnace A method for reducing NOx, in a combustion gas which is discharged from a combustion furnace for burning a fuel by means of a gas containing oxygen in an amount of at least 80 vol % and which contains oxygen, which method comprises adding a combustible ma... | 09/06/2005 |
| 6871514 | Method of making glass, a method and device for the control and setting of the redox state of redox fining agents in a glass melt There is now provided a method and a device for the control and setting of the redox state of redox fining agents in a glass melt, in which method, during the melting process, essentially oxygen gas is blown through the glass melt. ... | 03/29/2005 |
| 6862899 | Method and apparatus for heating glass melting furnaces with fossil fuels During the heating of glass melting furnaces having a combustion chamber with regenerators for preheating oxidation gases, with port necks that open into the combustion chamber, with primary burners and with secondary burners that are installed in a cascade arrangem... | 03/08/2005 |
| 6813902 | Systems and methods for increasing production of spheroidal glass particles in vertical glass furnaces A retrofit technology for air-fuel fired, vertical glass furnace for oxygen firing or boosting to provide additional heat to the process to increase furnace production capacity. The additional firing using oxygen is strategically controlled to enable enhanced radiat... | 11/09/2004 |
| 6722161 | Rapid glass melting or premelting A method for melting glass forming batch material includes charging the glass forming batch material to a glass melting apparatus; impinging a flame proximate to the surface of the batch materials to form a glass melt from the batch material; and bubbling the glass ... | 04/20/2004 |
| 6715319 | Melting of glass A method of producing flat glass in which foam which appears on the surface of molten glass melted using oxy-fuel burners is dispersed by directing a diffuse, luminescent flame onto the surface of the glass carrying the foam. ... | 04/06/2004 |
| 6708527 | Glass feeder operated with oxy-gas combustion A glass feeder comprises an enclosed chamber through which molten glass can pass, and passing through each side wall into the chamber at least one burner comprising first and second burner head means for combusting oxidant and fuel within said chamber so as to gener... | 03/23/2004 |
| 6705118 | Method of boosting a glass melting furnace using a roof mounted oxygen-fuel burner In an industrial glass furnace which contains recuperators, regenerators, electric boost or other devices for providing heat to glass batch material an oxy-fuel burner mounted in the roof of the furnace provides additional heat to melt the batch material. A method o... | 03/16/2004 |
| 6705117 | Method of heating a glass melting furnace using a roof mounted, staged combustion oxygen-fuel burner In an industrial glass furnace, which optionally contains recuperators, regenerators, electric boost or other devices for providing heat to glass batch material, at least one staged combustion oxy-fuel burner is mounted in the roof of the furnace to provide heat to ... | 03/16/2004 |
| 6588234 | Device and method of plaining glasses or glass-ceramics A device and method for the plaining of glasses or glass-ceramics. The device is provided with a melting vat, at least two plaining containers serially connected after the outlet of the melting vat, and at least one of the plaining containers is built in ... | 07/08/2003 |
| 6576807 | Method and apparatus for incinerating and vitrifying of waste, in particular radioactive waste The present invention provides a method of processing organic waste (D) in divided solid and/or liquid form, the method being implemented in a single reactor (1) containing a bath of molten gas (V) surmounted by a gas phase (G), the method comprising inci... | 06/10/2003 |
| 6532771 | Method for controlling glass furnace atmosphere Glass is produced in a glassmelting furnace by combusting fuel and oxidant having an oxygen content greater than 80 vol. % oxygen in a melting zone to form molten glass, wherein the surface of the molten glass is exposed to the gaseous atmosphere in the m... | 03/18/2003 |
| 6519973 | Glass melting process and furnace therefor with oxy-fuel combustion over melting zone and air-fuel combustion over fining zone A process and furnace for melting glass is set forth wherein the majority of the combustion energy over the melting zone of the furnace is provided by oxy-fuel combustion while a majority of the combustion energy over the fining zone of the furnace is pro... | 02/18/2003 |
| 6422041 | Method of boosting a glass melting furnace using a roof mounted oxygen-fuel burner In an industrial glass furnace which contains recuperators, regenerators, electric boost or other devices for providing heat to glass batch material an oxy-fuel burner mounted in the roof of the furnace provides additional heat to melt the batch material.... | 07/23/2002 |
| 6357264 | Apparatus for melting molten material This apparatus is a furnace for heating molten material which employs oxygen-fuel burner assemblies. Preferably, the assemblies are submerged in the molten material. They are water cooled top down units with burner nozzles being off-set from the supply co... | 03/19/2002 |
| 6354110 | Enhanced heat transfer through controlled interaction of separate fuel-rich and fuel-lean flames in glass furnaces In an industrial furnace used to melt glass batch or glass melt least two oxy-fuel burners are employed in the roof or side-wall of the furnace. At least one oxy-fuel burner is operated with a fuel-rich mixture and at least one other oxy-fuel burner is op... | 03/12/2002 |
| 6350118 | Combustion assembly for a furnace and method of use Combustion assembly adapted to be placed in a wall of a furnace including an axis having at least one pair of burners with axes, one oxidant lance arranged between the burners of the pair and having a lance axis and a source of oxidant connected to the bu... | 02/26/2002 |
| 6334337 | Air bubbler to increase glass production rate In a glass melter, a precious metal insert is used to protect a gas bubbler from corrosion at the orifice of the bubbler through which gas is injected into the melt. The use of a precious refractory metal insert at the bubbler orifice prevents the attack ... | 01/01/2002 |
| 6332340 | Process for manufacturing technical glass and burner for implementing such a process Provided is a process for the manufacture of technical glass. The process includes, heating a glass bath with at least one flame, wherein the at least one flame is a non-hard flame which is blue in color and includes substantially no reducing species.... | 12/25/2001 |
| 6253578 | Glass melting process and apparatus with reduced emissions and refractory corrosion A glassmelting apparatus which reduces alkali corrosion comprising: a glassmelting furnace having a plurality of walls, a crown, a charge end, a batch melting area and a fining area; at least two low momentum oxy-fuel burners located in at least one of th... | 07/03/2001 |
| 6237369 | Roof-mounted oxygen-fuel burner for a glass melting furnace and process of using the oxygen-fuel burner Briefly, according to the present invention there is provided a refractory lined glass melter for producing refined glass from raw glass-forming material using at least one oxygen-fuel burner recessed within a burner block mounted in the roof of the furna... | 05/29/2001 |
| 6233974 | Oxygen-gaseous forehearth burner for air-fuel and oxy-fuel forehearth burner block geometries An oxy-gaseous fuel burner for a forehearth system having an oxygen conduit, a fuel conduit disposed concentrically within the oxygen conduit and forming an annulus between the fuel conduit and the oxygen conduit, a precombustor conduit disposed at the ox... | 05/22/2001 |
| 6209355 | Method for melting of glass batch materials An apparatus for melting materials is provided comprising a melter body having a batch injection portion including a batch inlet port, a batch melting portion including a batch melting chamber adapted to receive materials from said batch injection portion... | 04/03/2001 |
