EP2836613A1 - Procédé et dispositif de fabrication de briquettes - Google Patents

Procédé et dispositif de fabrication de briquettes

Info

Publication number
EP2836613A1
EP2836613A1 EP13713847.5A EP13713847A EP2836613A1 EP 2836613 A1 EP2836613 A1 EP 2836613A1 EP 13713847 A EP13713847 A EP 13713847A EP 2836613 A1 EP2836613 A1 EP 2836613A1
Authority
EP
European Patent Office
Prior art keywords
mixing
carbon
temperature
water vapor
briquettes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13713847.5A
Other languages
German (de)
English (en)
Other versions
EP2836613B1 (fr
Inventor
Hado Heckmann
Robert Millner
Johann Wurm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Primetals Technologies Austria GmbH
Original Assignee
Siemens VAI Metals Technologies GmbH Austria
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens VAI Metals Technologies GmbH Austria filed Critical Siemens VAI Metals Technologies GmbH Austria
Priority to EP13713847.5A priority Critical patent/EP2836613B1/fr
Publication of EP2836613A1 publication Critical patent/EP2836613A1/fr
Application granted granted Critical
Publication of EP2836613B1 publication Critical patent/EP2836613B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
    • C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
    • C10L5/22—Methods of applying the binder to the other compounding ingredients; Apparatus therefor
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/26—After-treatment of the shaped fuels, e.g. briquettes
    • C10L5/28—Heating the shaped fuels, e.g. briquettes; Coking the binders
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/34—Other details of the shaped fuels, e.g. briquettes
    • C10L5/36—Shape
    • C10L5/361—Briquettes
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0086—Conditioning, transformation of reduced iron ores
    • C21B13/0093—Protecting against oxidation
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L2250/00—Structural features of fuel components or fuel compositions, either in solid, liquid or gaseous state
    • C10L2250/04—Additive or component is a polymer
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/08—Drying or removing water
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/14—Injection, e.g. in a reactor or a fuel stream during fuel production
    • C10L2290/148—Injection, e.g. in a reactor or a fuel stream during fuel production of steam
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/24—Mixing, stirring of fuel components
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/30—Pressing, compressing or compacting
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
    • C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
    • C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
    • C10L5/14—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with organic binders
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/242—Binding; Briquetting ; Granulating with binders
    • C22B1/244—Binding; Briquetting ; Granulating with binders organic
    • C22B1/245—Binding; Briquetting ; Granulating with binders organic with carbonaceous material for the production of coked agglomerates

Definitions

  • the present invention relates to a process for the production of a carbon carrier-containing briquette, wherein the carbon carriers are subjected to mixing with a binder system with the addition of water vapor and the resulting mixture is subjected to pressing into briquettes.
  • hard coal briquetting was mainly used to produce particulate carbon carriers made of fine coal for use as a domestic fire or in industrial grate firing. There are therefore numerous methods of hard coal briquetting known. Hard coal briquetting is very important for the COREX® / FINEX® process for the production of molten pig iron, since this process is based on a fixed bed process in which the fixed bed is produced by lumped carbon carriers.
  • lumped carbon carriers are combined with pre-reduced iron carriers and additives on the fixed bed surface
  • a sufficient permeability of the fixed bed is required, which depends on the granularity of the lumpy carbon support in charging to the fixed bed surface and the grain stability of the lumpy carbon support under the conditions on the fixed bed or in a fixed bed conditions.
  • the grain size of the lumped carbon carriers should therefore have a sufficiently large coarse grain fraction and a limited undersize fraction when charged onto the fixed bed surface.
  • a suitable grain size for the charged lumped carbon carriers set by screening from the starting material of the carbon carriers must not be substantially destroyed during handling until charging to the packed bed surface due to mechanical stresses.
  • the granularity of the lumpy carbon carriers should keep sufficiently large coarse grain fraction and a limited lower grain fraction under the conditions prevailing on the fixed bed surface or in the fixed bed.
  • the resistance of a particulate carbon support against the destruction of its grain when handled to charging on the packed bed surface is referred to as cold strength
  • the resistance of a particulate carbon support to destruction of its grain under conditions on or in a fixed bed is called hot strength.
  • coal is usually used as a carbonaceous material.
  • Commercial hard coal usually have only a proportion of 30-70% coarse grain, which can be charged directly as lumpy carbon carrier.
  • its briquetting is also suitable.
  • briquetting may favorably influence the cold and hot strength of the lumped carbon carriers produced by the nature of the process used and the characteristics of its performance.
  • WO2010081620 describes hard coal briquetting processes in conjunction with COREXO / FINEX®. It mentions a variety of possible binder systems for this purpose, including starch and polymers.
  • binder in liquid form is mixed with the coal to be briquetted.
  • starch and polymers, especially PVA which are in solid granular to powdery consistency must be blended with high levels of water - 1 part dry binder with at least 10 parts water or more - to give a handleable liquid binder. Too little addition of water makes uniform distribution of the binder in the coal difficult.
  • COREXOIFINEX®- for the production of molten pig iron, it is necessary to control a briquetting process not only to optimize the strength of the briquettes, but also to limit the moisture content of the briquettes prior to use in the production of molten pig iron.
  • a method of producing a carbon carrier-containing briquette wherein the carbon carriers are subjected to a mixing with the addition of water vapor with a binder system and the resulting mixture is pressed into briquettes.
  • Binder system to be mixed carbon carrier before mixing in a predefined temperature range
  • the carbon carriers are preferably carbon carriers with a particle size of less than 4 mm, determined by sieve analysis. Such carbon carriers are also referred to as fine coal in this application.
  • the carbon carriers comprise coal, more preferably hard coal, most preferably the carbon carriers are hard coal.
  • the carbon carriers may also include or consist of coke, petroleum coke, carbonaceous dusts, carbonaceous muds.
  • a single type of carbon carrier for example a single type of coal, may be used, or mixtures of different types of carbon carriers, for example, different types of coal or coal.
  • one type of carbon carrier is meant, for example, carbon carriers of a source of origin, or carbon carriers of a degree of coalification, or for example only metallurgical coals or only thermal coals.
  • various types of carbon carriers is meant, for example, carbon carriers of different sources of origin, or carbon carriers with different levels of carbonization, or, for example, metallurgical carbon and thermal carbon.
  • carbon carriers are processed into briquettes by the carbon carriers are mixed with a binder system with the addition of steam and the resulting mixture is pressed into briquettes.
  • the water vapor - or its properties influences the properties of the briquettes obtained - for example via the amount of water introduced into the mixture or via the amount of energy introduced.
  • the quality of water vapor in terms of energy content and
  • Water content per unit of mass Steam can be adjusted, for example, by the extent of overheating in superheated steam or by the extent of condensation in wet steam.
  • water vapors of different quality can be mixed. Also via the added amount of water vapor and / or over the duration of the addition, the mixing with regard to an optimization of the briquette quality is adjustable.
  • the binder system comprises at least one binder and, if appropriate, further substances, for example solvents for the binder.
  • a binder in this context is a substance by which solids with a fine degree of dispersion, for example powder, are glued together.
  • the binders are poorly water-soluble substances; Hardly water-soluble is to be understood as meaning a substance which, for complete dissolution at 20 ° C., requires a ratio of the proportions by weight of water to binder of equal to or greater than 5: 1.
  • Binders are for example starch or polyvinyl acetate PVA.
  • As the binder system for example, starch dissolved in water can be used.
  • at least one of the steps is selected from the group of steps
  • the carbon carriers have too high a moisture content for the production of briquettes having an acceptable moisture content, they are dried according to the invention before they are mixed with the binder system. Preference is given to a moisture having a water content of less than or equal to 7% by mass, more preferably a moisture having a water content of less than or equal to 5% by mass.
  • the strength properties of the briquettes can be influenced. Therefore, according to the invention, if appropriate, before mixing, the temperature of the carbon support to be mixed with the binder system is adjusted to a predefined temperature range selected with regard to the desired strength properties.
  • the temperature of the carbon supports first determines the amount of heat that must be supplied with the water vapor to adjust to the desired temperature for mixing the binder system with the carbon carriers. Depending on- How much energy is removed from the steam by heating up the carbon carriers is condensed to varying extents. If the moisture of the mixture, which is altered, for example, by this condensation, is in an adequate ratio to the amount of binder system used, the strength of the briquettes is favorably influenced.
  • a heat treatment for example, a heating -, which may be one or more stages, the briquettes after pressing.
  • the strength properties of the briquettes can be influenced in terms of curing.
  • at least one of the method steps takes place
  • the mixing can be carried out under batchwise addition of material or with continuous addition of material.
  • exhaust steam produced during the direct or indirect interaction is used at least as a partial amount of the water vapor added during the mixing. It can be used in such a way the entire exhaust steam or part of the resulting exhaust steam. As a result, the efficiency of the method is increased because the exhaust steam is energetically and materially used for heating and as a solvent for the binder system in the mixing.
  • the binder system in the solid state preferably dry, is mixed with the carbon carriers. In this way, the binder system can be better mixed with the carbon carriers than if, for example, a viscous binder system were used.
  • the binder system in the liquid state is mixed with the carbon carriers. mixed; This is especially used for liquid binder systems.
  • the binder system is mixed with the carbon carriers in a first mixing step to form a premix
  • the entry temperature of the premix is set to a predefined temperature range on entry into the second mixing step. This, too, can influence the properties of the briquettes obtained, as already discussed above.
  • the inlet temperature of the premix is adjusted by adjusting the temperature of the carbon carrier supplied to the first mixing step to a predefined temperature interval. Then, the premix does not need to be extra heated in the mixing device in which it is produced, which means less equipment.
  • a regulation and / or control of the second mixing step takes place by changing at least one of the parameters from the group consisting of the members
  • Amount - in batchwise operation - for example in kg, or mass flow - in continuous operation -, for example in kg / time unit, the carbon carrier, Inlet temperature of the carbon carriers from the first mixing step or inlet temperature of the premix into the second mixing step,
  • Duration of the addition of the steam preferably a duration of 0.5 to 30 minutes, more preferably from 2 to 7 minutes.
  • the amount of added water vapor relative to the amount of carbon carriers in the second mixing step is preferably controlled by one of the following parameters:
  • Duration of the addition of the steam - in the case of batchwise operation - preferably a duration of 0.5 to 30 minutes, more preferably of 2 to 7 minutes,
  • exhaust steam occurring in this interaction is used at least as a partial amount of the water vapor added during the mixing. This has the advantage that it is introduced materially and energetically back into the process.
  • the binder system contains starch.
  • Starch is cheap and readily available and not harmful to the environment.
  • the binder system contains at least one member selected from the group consisting of members
  • synthetic polymers are meant for example:
  • the binder system contains
  • Polyvinyl acetate is readily available in large quantities and can be prepared, for example, according to claim 12 in the course of a process for producing pig iron.
  • the carbon carriers are added to the hot strength of briquette increasing components in an amount of 1 to 10 mass%, based on the mass of the carbon carriers supplied to the mixing.
  • These may be, for example, bitumens in granular
  • the mixture is subjected to a pre-agglomeration before it is subjected to compression to briquettes.
  • the pressing of pre-agglomerated mixture brings advantages in terms of the properties of the briquettes, especially a higher density, which leads to firmer briquettes.
  • Another object of the present application is the use of briquettes produced by the process according to the invention in a process for the production of pig iron with gasification of the carbon carriers.
  • Another object of the present application is a method in which the binder system holds polyvinyl acetate ent, wherein the polyvinyl acetate is at least partially generated from monomers by means of a synthesis gas, which in in the inventive method for producing pig iron with gasification of the carbon carrier resulting export gas are obtained, with conversion of CO of the synthesis gas via acetic acid in vinyl acetate.
  • a further subject of the present application is a device
  • Steam feed line for the addition of water vapor comprises, characterized
  • the heat treatment device for heat treatment of the briquettes a device for direct or indirect interaction with water vapor, in which a water vapor feed line for feeding water vapor opens, and from which an exhaust steam line, and wherein the exhaust steam line in the Wasserdampfzugabetechnisch and / or in the Mixturing device opens.
  • pressure equalizing locks are installed before and after the respective unit for the materials in the respective units - for example carbon carrier, mixture, briquettes.
  • pressure balancing locks for the briquettes are installed when the pressure in the heat treatment apparatus for heat treating the briquettes from the environment is increased.
  • the mixing device can be operated batchwise or continuously.
  • the device for changing the temperature of the carbon carriers prior to entry into the mixing device can be designed, for example, as a heatable chamber.
  • the dryer is the device for changing the temperature of the carbon carriers before entering the mixing device. This reduces the expenditure on equipment, maintenance, and investment and operating costs.
  • the heat treatment device for heat treatment of the briquettes may be formed, for example, as a heatable chamber.
  • the carbon carrier storage is provided with a device for changing the temperature of carbon carriers located in the carbon carrier storage. This allows no extra aggregate to be needed to change the temperature of the carbon carriers.
  • the mixing device comprises
  • the premixer comprises means for changing the temperature of premixing in the premixer; for example, by a heat transfer medium such as steam or thermal oil flowed through or electrical heating elements.
  • a heat transfer medium such as steam or thermal oil flowed through or electrical heating elements.
  • the efficiency of the method according to the invention can be increased by optimally adjusting the treatment conditions to the mixture to be briquetted.
  • at least one member of the group is composed of the members
  • a device for changing the temperature of carbon carriers located in the carrier carbon a device for direct or indirect interaction with water vapor, in which a water vapor feed line for feeding water vapor opens. In this way, the changes in temperature can be made with the help of water vapor.
  • the exhaust steam line opens into the Wasserdampfzugabetechnisch and / or in the mixing device.
  • the Abdampfleitun opens into the final mixer.
  • premixers and final mixers are combined in an apparatus unit in the mixing device. This reduces the expenditure on equipment, maintenance, and investment and operating costs.
  • the erfindungsge Permitted device also comprises a device for pre-agglomeration of the mixture prepared in the mixing device. This is then connected via a mixture supply line with the mixing device, and with a
  • Voragglomeratab Being connected to the pressing device for pressing briquettes.
  • the mixture prepared in the mixing device is introduced into an optional pre-agglomeration device prior to introduction into the device. Kneaded kneading hand kneading. As a result, the consistency of the mixture for the briquetting process is improved compared to the state after the mixing device.
  • steam always means steam.
  • FIG. 1 shows a schematic representation of a device according to the invention.
  • FIG. 2 schematically shows the use of briquettes produced according to the invention in a process for the production of pig iron with gasification of the carbon carriers and the use of accumulating export gas for the production of pig iron
  • FIG. 1 shows a device according to the invention with a mixing device 1 for mixing carbon carriers 2 with a binder system 3.
  • the device also has a pressing device 4 for pressing briquettes on the basis of a mixture obtained from the mixing device 1.
  • the dryer 6 is a device for indirect interaction with water vapor
  • the heat treatment device 7 for heat treatment of the briquettes is a device for direct interaction with water vapor; in both opens That is, a water vapor feed line 8a, 8b for feeding in steam, and from both, a vapor line 9a, 9b respectively exits, the vapor line 9a discharging into the water vapor feed line 5 and the exhaust line 9b discharging into the mixing device 1.
  • the carbon carriers 2, in this case a mixture of fine carbons of different origin and different grain size, are subjected to mixing with the addition of steam in the mixing device 1 with a binder system 3, in this case starch powder.
  • the resulting mixture is then subjected to pressing in the pressing device 4 into briquettes. Drying in the drier 6 takes place up to a water content of less than or equal to 7% by mass.
  • the drying of the carbon carriers prior to mixing and the heat treatment of the briquettes after the pressing takes place by means of superheated steam supplied via the steam feed lines 8a, 8b.
  • the resulting exhaust steam is introduced via the exhaust steam line 9a in the water vapor feed line 5 and the exhaust steam line 9b in the mixing device 1, where it is a subset of the added during mixing water vapor.
  • Mixing device 1 comprises a premixer 10 for performing a first mixing step, and an end mixer 11 for performing a second mixing step. In the mixing device 1 premixer 10 and end mixer 11 are combined in one unit.
  • a binder feed line 12 for adding the binder system 3 into the premixer 10 opens into the premixer 10.
  • a carbon feed addition line 13 for adding carbon carriers 3 from the drier 6 into the premixer 10 also flows into the premixer 10.
  • the water vapor feed line 5 opens in a first mixing step
  • the binder system 3 in the pre-mixer 10 is mixed with the carbon carriers 2 to form a premix, and the premix is subjected to a second mixing step in the final mixer 11 with the addition of water vapor via the steam feed line 5.
  • a device 14 for controlling and / or controlling the amount of steam that can be introduced into the final mixer per unit of time and / or per unit of quantity of material to be briquetted is present in the water vapor feed line 5. This can be a regulation and / or control of the second mixing step by changing at least one of the parameters from the group consisting of the members
  • Amount - in batchwise operation - for example in kg, or mass flow - in continuous operation -, for example in kg / time unit, the carbon carrier,
  • Duration of the addition of the water vapor preferably a duration of 0.5 to 30 minutes, more preferably from 2 to 7 minutes, take place.
  • the dryer 6 is at the same time a device for changing the temperature of the carbon carriers prior to entry into the mixing device. With this dryer 6, the inlet temperature of the premix can be adjusted to a predefined temperature range on entering the second mixing step by setting the temperature of the carbon carrier 3 supplied to the first mixing step to a predefined temperature interval.
  • a pre-mix inlet temperature setting (entering the second mixing step into a predefined temperature range may be accomplished by means of a pre-mix temperature changing device 15 of the pre-mixer.)
  • These pre-mix inlet temperature settings on entry Indirect interaction with water vapor takes place in the second mixing step, and exhaust steam produced in such an interaction can be used as a constituent of the water vapor which is fed to the final mixer 11, which, however, for the sake of clarity, just like a
  • the carbon carriers 2 are fed from a carbon carrier storage 16, in which they are stored before being supplied to the mixer 6, via a carbon carrier discharge line 17 into the dryer.
  • the carbon carrier storage 16 is provided with a device 18 for changing the temperature of carbon carriers 2 located in the carbon carrier storage. This device 18 is a device for indirect interaction with
  • a pre-agglomeration may take place by means of a device 28 for pre-agglomeration of the mixture produced in the mixing device 1.
  • the mixture produced in the mixing device 1 is kneaded before introduction into the device 28 for pre-agglomeration in an optionally present kneader 29.
  • the briquettes produced according to the invention are used in a process for the production of pig iron with gasification of
  • FIG. 2 shows this schematically for a COREX® process.
  • Briquettes taken from the heat treatment device 7, in which briquettes are hardened, are fed to a coal bunker 19, into which bitcoil 20 is also filled. From the coal bunker 19, this material is fed to a melter gasifier 21.
  • the carbon carrier is recovered liquid pig iron.
  • heat exchanger 22 heat for the purpose of producing at least a partial amount of the steam used in the process according to the invention can be withdrawn from the so-called generator gas withdrawn from the melter gasifier 21.
  • the generator gas is used as reducing gas in the reduction unit 23, in which the iron carriers intended for input into the melter gasifier are generated.
  • top gas 24 is withdrawn from the reduction unit 23.
  • Heat can also be extracted therefrom, for example by means of heat exchanger 25, in order to produce at least a subset of the water vapor used in the process according to the invention.
  • FIG. 2 shows how, after passing through the heat exchanger 25, the cooled top gas is removed, optionally after further, not shown.
  • presented treatment steps - is used as export gas 26 in a binder factory 27 for the production of binder for a binder system used according to the invention.
  • a carbon monoxide-rich synthesis gas is produced from the export gas and polyvinyl acetate is produced by its conversion via acetic acid and vinyl acetate.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une briquette contenant des supports en carbone (2), les supports en carbone (2) étant soumis conjointement avec un système de liant (3) à un mélange sous apport de vapeur d'eau et le mélange ainsi obtenu étant soumis à un pressage pour obtenir des briquettes. A cet effet, au moins une des étapes suivantes : - séchage des supports en carbone (2) avant mélange, - réglage de la température des supports en carbone (2) à mélanger avec le système de liant avant mélange dans une plage de températures prédéfinie, - traitement thermique des briquettes après pressage, par interaction directe ou indirecte avec une vapeur d'eau surchauffée, est mise en oeuvre. La vapeur d'échappement résultante est utilisée au moins comme quantité partielle de la vapeur d'eau ajoutée lors du mélange. Un dispositif destiné à permettre de mettre en oeuvre un tel procédé comporte un dispositif permettant l'interaction directe ou indirecte avec de la vapeur d'eau, v d'où part une conduite de vapeur d'échappement qui débouche directement ou indirectement dans le dispositif de mélange.
EP13713847.5A 2012-04-10 2013-03-28 Procédé et dispositif de fabrication de briquettes Not-in-force EP2836613B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13713847.5A EP2836613B1 (fr) 2012-04-10 2013-03-28 Procédé et dispositif de fabrication de briquettes

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12163533 2012-04-10
PCT/EP2013/056648 WO2013152959A1 (fr) 2012-04-10 2013-03-28 Procédé et dispositif de fabrication de briquettes
EP13713847.5A EP2836613B1 (fr) 2012-04-10 2013-03-28 Procédé et dispositif de fabrication de briquettes

Publications (2)

Publication Number Publication Date
EP2836613A1 true EP2836613A1 (fr) 2015-02-18
EP2836613B1 EP2836613B1 (fr) 2017-10-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP13713847.5A Not-in-force EP2836613B1 (fr) 2012-04-10 2013-03-28 Procédé et dispositif de fabrication de briquettes

Country Status (10)

Country Link
US (1) US20150027038A1 (fr)
EP (1) EP2836613B1 (fr)
KR (1) KR20140144738A (fr)
CN (2) CN109385318A (fr)
AU (1) AU2013245608A1 (fr)
CA (1) CA2869942A1 (fr)
IN (1) IN2014DN07769A (fr)
RU (1) RU2642993C2 (fr)
UA (1) UA113639C2 (fr)
WO (1) WO2013152959A1 (fr)

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KR101418053B1 (ko) 2012-12-21 2014-07-09 주식회사 포스코 성형탄 및 그 제조 방법
EP3095814A1 (fr) * 2015-05-20 2016-11-23 Primetals Technologies Austria GmbH Procédé de fabrication de pièces pressées contenant des fines de charbon
KR101709206B1 (ko) 2015-09-25 2017-02-22 주식회사 포스코 성형탄 및 그 제조 방법
US20170110589A1 (en) * 2015-10-14 2017-04-20 United Microelectronics Corp. Semiconductor structure
GB201613915D0 (en) 2016-08-15 2016-09-28 Binding Solutions Ltd Briquettes
DE102017206457A1 (de) * 2017-04-13 2018-10-18 Thyssenkrupp Ag Vorrichtung und Verfahren zum Kompaktieren von kohlehaltigem Einsatzstoff sowie Verwendung
GB201706116D0 (en) * 2017-04-18 2017-05-31 Legacy Hill Resources Ltd Iron ore pellets
CN111205900B (zh) * 2020-01-20 2021-11-09 北京科技大学 一种用于实验室研究的焦炭类似物及其制备工艺
JP7415964B2 (ja) * 2021-01-21 2024-01-17 Ｊｆｅスチール株式会社 ブリケットの製造方法
GB202103972D0 (en) 2021-03-22 2021-05-05 Binding Solutions Ltd Pellet
CN117999371A (zh) 2021-09-16 2024-05-07 泰克诺尔德·德森沃门特科技有限公司 用于钢还原炉的固体附聚物
BR102021024501A2 (pt) 2021-12-03 2022-06-21 Tecnored Desenvolvimento Tecnologico S A Processo e sistema de fabricação de um aglomerado sólido
WO2024103137A1 (fr) 2022-11-16 2024-05-23 Tecnored Desenvolvimento Tecnologico S.A. Agglomérat solide cokéfié et son procédé de production

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Also Published As

Publication number Publication date
AU2013245608A1 (en) 2014-09-25
RU2642993C2 (ru) 2018-01-29
RU2014144985A (ru) 2016-05-27
WO2013152959A1 (fr) 2013-10-17
CN109385318A (zh) 2019-02-26
EP2836613B1 (fr) 2017-10-18
IN2014DN07769A (fr) 2015-05-15
US20150027038A1 (en) 2015-01-29
CA2869942A1 (fr) 2013-10-17
KR20140144738A (ko) 2014-12-19
UA113639C2 (xx) 2017-02-27
CN104220604A (zh) 2014-12-17

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