Patent application number | Description | Published |
20100024599 | METHOD AND DEVICE FOR PRODUCING MOLTEN MATERIAL - A method for producing molten material, wherein oxygen, reducing agents and iron that has been reduced in a reduction reactor are introduced into a melter gasifier. The reducing agent is gasified with the oxygen and the heat thereby produced melts the reduced iron. Cupola gas from the melter gasifier is used at least as a portion of the reduction gas, and reacted top gas is withdrawn from the reduction reactor. The aim of the invention is to increase energy efficiency and raw material efficiency as well as productivity while at the same time obtaining metallurgically improved properties of the product. For this purpose, at least a portion of the top gas is branched off from the line for the withdrawal of the top gas from the reduction reactor and is returned via at least one return line leading to the melter gasifier and is introduced into the melter gasifier. | 02-04-2010 |
20100043599 | METHOD AND DEVICE FOR PRODUCING MOLTEN MATERIAL - In a method for the production of molten metal, oxygen, a reducing agent and iron reduced in a reduction reactor are introduced into a melt gasifier, the reducing agent is gasified with oxygen and reduced iron is melted by means of the heat which occurs, the cupola gas being used as at least a fraction of the reduction gas. Reacted top gas is drawn off from the reduction reactor. | 02-25-2010 |
20100313711 | METHOD FOR THE MELTING OF PIG IRON WITH THE RECIRCULATION OF BLAST FURNACE GAS AND WITH THE ADDITION OF HYDROCARBONS - A method for the melting of pig iron in a blast furnace ( | 12-16-2010 |
20110030507 | PROCESS AND APPARATUS FOR PRODUCING LIQUID PIG IRON OR LIQUID PRIMARY STEEL PRODUCTS - A process and an apparatus for producing liquid pig iron or liquid primary steel products from charge materials formed by iron ores and additions. The charge materials are subjected to a further reduction in a reducing zone ( | 02-10-2011 |
20110120266 | METHOD AND SYSTEM FOR ENERGY-OPTIMIZED AND CO2 EMISSION-OPTIMIZED IRON PRODUCTION - A process for energy-and emission-optimized iron production and an installation for carrying out the process. A first partial amount of a generator gas produced in a melter gasifier is used as a first reducing gas in a first reduction zone. A second partial amount is fed to at least one further reduction zone as a second reducing gas. In addition, after CO | 05-26-2011 |
20110229276 | METHOD AND APPARATUS FOR SEPARATING PARTICULATE SOLIDS FROM A GAS STREAM - A method and a device for separating particulate solids from a gas flow, particularly a carrier gas flow for transporting the particulate solids, has a transport line ( | 09-22-2011 |
20110283837 | METHOD AND DEVICE FOR OPERATING A SMELTING REDUCTION PROCESS - In a method and a device for operating a smelting reduction process, at least part of an export gas from a blast furnace or a reduction unit is thermally utilized in a gas turbine and the exhaust gas of this gas turbine is used in a waste heat steam generator to generate steam. The remaining part of the export gas is fed to a CO2 separation apparatus, the tail gas thereby obtained being fed to a waste heat steam generator and burned for additional steam generation. The combustible components of the tail gas are sent for thermal utilization in a steam generator, so that the overall energy balance of the thermal use of the export gas is improved. In addition, a further part of the export gas is qualitatively improved by the CO2 separation apparatus, so as to generate a high-quality reduction gas which can be supplied for metallurgical use. | 11-24-2011 |
20110284800 | METHOD AND DEVICE FOR PRODUCING A RAW SYNTHESIS GAS - A method and an apparatus for generating a gas containing hydrogen (H | 11-24-2011 |
20120020868 | PROCESS AND INSTALLATION FOR PRODUCING SUBSTITUTE GAS - A process and an installation for reducing particulate material containing iron oxide are shown, wherein the material containing iron oxide is at least partially reduced with reducing gas in a reducing zone and the waste gas produced during the reduction is drawn off and subsequently subjected to CO | 01-26-2012 |
20120036961 | Method and System for Producing Pig Iron or Fluid Steel Pre-Products - A method and a plant for the production of pig iron or liquid steel semi-finished products are shown, metal oxide-containing batch materials and, if appropriate, aggregates being at least partially reduced in a reduction zone by a reduction gas, subsequently being introduced into a smelting zone and being smelted along with the supply of carbon carriers and oxygen-containing gas and along with the formation of the reduction gas. The reduction gas formed in the smelting zone is supplied to the reduction zone, reacted there and drawn off as export gas, CO | 02-16-2012 |
20120036997 | METHOD AND APPARATUS FOR SEPARATING A GASEOUS COMPONENT - In a method and an apparatus for separating at least one gaseous component from a waste gas of an installation for producing liquid pig iron, liquid primary steel products or sponge iron, in a first step, a stream of the waste gas passes through at least one adsorption separator at a first pressure, whereby the gaseous component is largely separated from the waste gas and, in a second step, the gaseous component is largely removed from the adsorption separator at a second pressure, which is lower than the first pressure. The method and apparatus are maintenance-free, cause low investment and energy costs and has a lower space requirement by a method in which the second pressure or the desorption pressure is generated by at least one jet pump, which is fed a stream of a propellant gas at a third pressure, which is higher than the second pressure. | 02-16-2012 |
20120160062 | REFORMER GAS-BASED REDUCING METHOD WITH REDUCED NOX EMISSION - In a process and apparatus for the reduction of metal oxides (3) to form metalized material by contact with hot reducing gas, which is produced at least partially by catalytic reformation of a mixture of
| 06-28-2012 |
20120174710 | REFORMER-GAS-BASED REDUCTION PROCESS WITH DECARBONIZATION OF THE FUEL GAS FOR THE REFORMER - In a process and apparatus for the reduction of metal oxides to form metalized material by contact with hot reducing gas, which is produced at least partially by catalytic reformation of a mixture of—a gas containing carbon dioxide (CO | 07-12-2012 |
20120237421 | Method for Removing CO2 From Exhaust Gases, Such as Exhaust Gases From Plants for Producing Raw Iron or Exhaust Gases From Syngas Plants - A method for the removal of CO | 09-20-2012 |
20120279356 | Process and Device for Charging Into a Smelting Unit - A process and a device for charging a primary product for pig iron into a smelting unit are provided. According to the process and device, some of the primary product that has been formed by reducing oxidic iron carriers is stored in the hot state in a reservoir tank before being supplied into the storage device or charging device that is directly connected to the smelting unit. | 11-08-2012 |
20120326363 | METHOD AND DEVICE FOR PROVIDING REDUCTION GAS FROM GENERATOR GAS - A method for providing reduction gas for iron ore reduction by cooling and dry dedusting generator gas produced in a melter gasifier for pig iron production, as well as a device for carrying out such method, are provided. The generator gas may be cooled both by water injection and by heat exchange after it has been discharged from the melter gasifier and before a dry dedusting thereof. | 12-27-2012 |
20120328465 | PROCESS AND APPARATUS FOR PRODUCING PRESSED ARTICLES - A method is provided for producing pressed articles which contain direct-reduced, fine particulate iron (direct reduced iron, DRI) from a fluidized bed reduction system for direct reduction of fine particulate iron ore, wherein direct-reduced, fine particulate iron produced in the fluidized bed reduction system during direct reduction is compacted into pressed articles. Dry, fine particulate material containing at least fine particulate iron ore and optionally fine particulate iron and carbon is admixed to the direct-reduced fine particulate iron and the mixture thus obtained is subsequently compacted into pressed articles. An apparatus for carrying out such method is also provided. | 12-27-2012 |
20130019716 | PROCESS AND APPARATUS FOR REDUCING CHARGE MATERIALS CONTAINING IRON ORE OR FOR PRODUCING PIG IRON OR LIQUID PRIMARY STEEL PRODUCTS - A process and an apparatus for reducing charge materials containing iron ore or for producing pig iron or liquid primary steel products in a smelting unit are provided, the charge materials being at least partially reduced in at least one reduction unit by means of a reducing gas and optionally at least some of the at least partially reduced charge materials being melted in a smelting unit while supplying coal or coke and gas containing oxygen, while simultaneously forming the reducing gas, and the reducing gas or a reducing gas generated externally being supplied to the reduction unit. In the event of an interruption in the production of pig iron or primary steel products, the at least one reduction unit is emptied and the at least partially reduced charge materials are introduced into at least one vessel and kept under a non-oxidizing shielding gas atmosphere. | 01-24-2013 |
20130112075 | METHOD FOR CLEANING A GAS FLOW LOADED WITH DUST - A method is provided for cleaning a gas flow made of top gas and/or off gas and/or export gas from a direct reduction plant or a melt reduction plant, which is loaded with dust and/or fine particulate solids. The gas flow is subjected to a dry cleaning using at least one dry filter, wherein dusts and/or fine particulate raw materials are separated from the gas flow. The cleaned gas flow is fed into a CO2 separating device, wherein CO2 is separated, forming a product gas that is substantially free of water and CO2 and is used for backflushing the dry filter. | 05-09-2013 |
20130154166 | Method for Increasing the Penetration Depth of an Oxygen Stream - A method and device are disclosed for automatically evaluating a delivery system in respect of the energy efficiency and emissions efficiency thereof. The method may include: determining a service level for the delivery system according to an energy intensity and an evaluation relevance of the particular delivery system, detecting energy data and emissions data of the delivery system corresponding to the determined service level of the delivery system, and calculating at least one indicator based on the detected energy data and emissions data and/or based on data for the energy management and environmental management of the delivery system for evaluating the delivery system with respect to the energy efficiency and emissions efficiency thereof. | 06-20-2013 |
20130284019 | Method And Apparatus For Treating Process Water - A method and apparatus are disclosed for treating process water which is loaded with gaseous compounds and/or possibly with solids and comes from a wet-cleaning installation for cleaning process gas, e.g., from a melt-reduction subassembly or from a direct-reduction subassembly. Process water is introduced in a tank in a first process stage and degassed on the basis of reduced solubility of the dissolved compounds. The tank has, on its upper side, a gas-collecting chamber, in which the separated-off gases are collected and from which these are discharged. Likewise, the treated process water is discharged from the tank via a drainage means. | 10-31-2013 |
20140000535 | METALLURGICAL PLANT WITH EFFICIENT WASTE-HEAT UTILIZATION | 01-02-2014 |
20140007504 | PROCESS FOR REGULATING JOULE VALUE OF OFFGASES FROM PLANTS FOR PIG IRON PRODUCTION OR OF SYNTHESIS GAS - In a plant having integrated CO | 01-09-2014 |
20140083252 | REDUCTION OF METAL OXIDES USING GAS STREAM CONTAINING BOTH HYDROCARBON AND HYDROGEN - A gas stream containing both hydrocarbon and hydrogen is separated into a hydrogen-rich fraction and a hydrocarbon-rich fraction. Then at least one sub-quantity of the hydrocarbon-rich fraction is subjected to at least one operation from the group oxidation using technically pure oxygen and reforming using CO | 03-27-2014 |
20140110891 | METHOD AND DEVICE FOR CHARGING COAL-CONTAINING MATERIAL AND IRON CARRIER MATERIAL - A melter gasifier of a smelting reduction installation is charged by bringing together coal-containing material in lump form and iron carrier material (which may be hot) before and/or while they enter the melter gasifier. The ratio of the combined amounts of iron carrier material and coal-containing material in lump form is variable. The combined amounts of iron carrier material and coal-containing material in lump form are distributed over the cross section of the melter gasifier by a dynamic distributing device, and the ratio of the combined amounts of the iron carrier material and coal-containing material in lump form is set depending on the position of the dynamic distributing device. | 04-24-2014 |
20140138884 | DEVICE FOR THE CLOSED-LOOP CONTROL OF PROCESS GASES IN A PLANT FOR PRODUCING DIRECTLY REDUCED METAL ORES - A device for closed-loop control of process gases ( | 05-22-2014 |
20140196571 | PROCESS AND DEVICE FOR CHARGING INTO A SMELTING UNIT - A process and a device for charging a primary product for pig iron into a smelting unit are provided. According to the process and device, some of the primary product that has been formed by reducing oxidic iron carriers is stored in the hot state in a reservoir tank before being supplied into the storage device or charging device that is directly connected to the smelting unit. | 07-17-2014 |
20140202285 | METHOD FOR TREATING WASTE GASES FROM PLANTS FOR PIG IRON PRODUCTION - A method and a system for treating waste gases ( | 07-24-2014 |
20140217653 | SYSTEM FOR ENERGY OPTIMIZATION IN A PLANT FOR PRODUCING DIRECT-REDUCED METAL ORES - A system for energy optimization in a plant ( | 08-07-2014 |
20140361472 | METHOD AND DEVICE FOR OPERATING A SMELTING REDUCTION PROCESS - In a method and a device for operating a smelting reduction process, at least part of an export gas from a blast furnace or a reduction unit is thermally utilized in a gas turbine and the exhaust gas of this gas turbine is used in a waste heat steam generator to generate steam. The remaining part of the export gas is fed to a CO | 12-11-2014 |
20150027038 | PROCESS AND APPARATUS FOR BRIQUETTE PRODUCTION - Process for producing a briquette containing carbon carriers ( | 01-29-2015 |
20150135899 | METHOD AND DEVICE FOR INTRODUCING FINE PARTICLE-SHAPED MATERIAL INTO THE FLUIDISED BED OF A FLUIDISED BED REDUCTION UNIT - A method for introducing fine particulate material ( | 05-21-2015 |
20150136046 | METHOD FOR USING THE EXHAUST GASES FROM PLANTS FOR RAW IRON MANUFACTURE FOR GENERATING STEAM - A method and a system for generating steam using the waste gases from plants for pig iron manufacture: waste gas removed as export gas ( | 05-21-2015 |
20150176905 | METHOD AND SYSTEM FOR PRODUCING PIG IRON OR FLUID STEEL PRE-PRODUCTS - A method and a plant for the production of pig iron or liquid steel semi-finished products are shown, metal oxide-containing batch materials and, if appropriate, aggregates being at least partially reduced in a reduction zone by a reduction gas, subsequently being introduced into a smelting zone and being smelted along with the supply of carbon carriers and oxygen-containing gas and along with the formation of the reduction gas. The reduction gas formed in the smelting zone is supplied to the reduction zone, reacted there and drawn off as export gas, CO | 06-25-2015 |
20150329930 | REFORMER-GAS-BASED REDUCTION PROCESS WITH DECARBONIZATION OF THE FUEL GAS FOR THE REFORMER - In a process and apparatus for the reduction of metal oxides to form metalized material by contact with hot reducing gas, which is produced at least partially by catalytic reformation of a mixture of a gas containing carbon dioxide (CO | 11-19-2015 |
20150330707 | SUPERHEATING OF AN EXPORT GAS USED IN A REDUCTION PROCESS, IN ORDER TO BALANCE OUT AMOUNT FLUCTUATIONS, AND DEVICE - A method and a device for balancing out amount fluctuations while simultaneously increasing the temperature of an export gas ( | 11-19-2015 |
20150345869 | REFORMER GAS-BASED REDUCING METHOD WITH REDUCED NOx EMISSION - In a process and apparatus for the reduction of metal oxides ( | 12-03-2015 |
20160076113 | METHOD AND DEVICE FOR REDUCING IRON-OXIDE-CONTAINING FEEDSTOCKS IN A HIGH-PRESSURE REDUCING UNIT - A method for reducing iron-oxide-containing feedstocks by introducing a reducing gas into a high-pressure reducing unit ( | 03-17-2016 |