EP1798277A2 - Moulded body comprising brown coal - Google Patents
Moulded body comprising brown coal Download PDFInfo
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- EP1798277A2 EP1798277A2 EP06024576A EP06024576A EP1798277A2 EP 1798277 A2 EP1798277 A2 EP 1798277A2 EP 06024576 A EP06024576 A EP 06024576A EP 06024576 A EP06024576 A EP 06024576A EP 1798277 A2 EP1798277 A2 EP 1798277A2
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- fibers
- press molding
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- 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, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- 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
- C10L5/08—Methods of shaping, e.g. pelletizing or briquetting without the aid of extraneous binders
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- 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, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- 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
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- 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, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- 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
- C10L5/363—Pellets or granulates
Definitions
- the invention relates to a brown coal briquette.
- the most widespread briquette is the brown coal briquette, which is usually pressed without binder from dried lignite.
- Dry lignite usually has properties that allow compression only under the action of pressure, for example in a Formkanalstempelpresse.
- the material has sufficient binding forces to give the finished product a corresponding pressure and drum strength.
- the fire resistance of such briquettes is usually not objectionable.
- bituminous briquettes are usually made using binders, for example, bitumen may be considered as a binder.
- the quality of the coal is of crucial importance if a product resistant to pressure, abrasion and breakage is to be produced, which also has a relatively good resistance to fire.
- fine coal, coal dust and dust with too low a moisture content can be known to briquet worse without the use of binder.
- the resulting product has a low resistance to breakage and abrasion.
- the resistance to breakage and abrasion is a decisive criterion. Abrasion and edge breakage during the handling of briquettes produces a not inconsiderable amount of fine coal, carbon black and dust, which is undesirable for a wide variety of reasons.
- the invention is therefore based on the object to provide a completely new press molding of brown coal or lignite as the main component, which has an increased abrasion and breaking strength.
- a lignite press molding has proved to be particularly advantageous, which is characterized by the addition of fibers having an average length of 1 to 20 mm and a fineness of 1 to 100 dtex.
- higher fineness fibers of from about 1 to about 60 dtex in particular, increase the edge strength of the molded articles, thereby achieving a significant reduction in abrasion and breakage in the crimping of the molded articles.
- the proportion of fibers is between 0.25 to 20% by weight of the entire press molding.
- the brown coal may have a water content of 5 to 35 percent by mass, preferably between 15 and 25 percent by mass.
- the mixture is binder-free.
- a binder in the context of the invention, the addition of fibers is not to be understood, but are understood as the binder components of the mixture, such as bitumen, starch, molasses, etc.
- the press molding according to the invention can also contain binding-inert constituents as further constituent.
- this may have binding-inert hard coal as a further constituent.
- the added fiber provides the briquette with such excellent fracture and abrasion resistance that it can be blended with bond-inert carbon in the size range of up to about 40 percent by weight without the addition of binders.
- Lignite briquettes in particular have a comparatively low calorific value / calorific value compared to hard coal briquettes.
- Hard coal briquettes are, however, without exception briquetted with binder and therefore expensive to produce. There is therefore the need, the calorific value / calorific value of Brown coal briquettes by adding, for example, anthracite to improve.
- mixed briquettes for example consisting of lignite, organic residues and binders, for example in the form of molasses or starch, are known, which allow the advantage of a cost-effective use of the resulting anyway in various production processes residues. These briquettes are either too expensive to produce or unsatisfactory in their energy yield.
- a mixed briquette that consists of a pressed to formable pieces of mixture of coal grass and sawdust or similar wood waste.
- This briquette contains up to 50% wood chips.
- this is subjected to a pressure at which the resin contained in the wood substance emerges and acts as a binder.
- the process described in the aforementioned document has been developed for lack of a sufficient amount of brikettiertransporten coals.
- the invention is therefore further based on the object to provide a completely new press molding, which can be particularly cost-effective and easy to manufacture and which is suitable as a cheap substitute for conventional brown coal briquettes.
- the invention is also based on the object to provide a new press molding, which offers a high breaking strength and high resistance to fire with a sufficiently high energy yield and low production costs.
- This object is achieved by a press molding of a mixture of at least two different coal qualities and / or two different types of coal of different Kohlohllienpron, wherein the mixture comprises dried lignite with a water content of 5 to 35 percent by mass, preferably between 15 and 25 percent by mass and binder-free, with an addition of fibers in a proportion of 0.25-20% by mass of the mixture and wherein the fibers have a length of between 1 and 10 mm.
- dry brown coal and pitch coal or baking coal are provided as main components.
- gas flame coal mixed with dry lignite has proven to be particularly favorable in terms of energy yield.
- the molding may consist of about 70% dry brown coal by weight and about 30% by weight hard coal. In the percentages mentioned above, the addition of fibers is not taken into account.
- the coal behaves almost inert with respect to the triggering of binding forces during the briquetting process.
- the pressure and drum strength of the mixed briquette thus obtained would decrease significantly compared with a briquette consisting of 100% dry brown coal.
- the inventively provided addition of fibers at least compensates for such a loss of mechanical strength.
- the mixture may also contain other organic residues, such as production residues from the paper and sugar industries.
- the mixture comprises between 5 and 40% by weight hard coal or between 60 and 95% by weight brown coal.
- fibers for example, dried, optionally comminuted organic material may be provided.
- straw, sisal, coconut, hemp, hay, textile fibers or the like may be considered.
- fibers polypropylene yarns steel fibers, glass fibers or rockwool fibers and waste fibers of any kind such.
- waste may be provided from the carpet floor construction.
- the invention further relates to a method in which the mixture of the preferably predried or dried basic components is compressed without the addition of binder under the application of pressure.
- the individual components of the mixture in the form of dry lignite, fiber material and possibly hard coal or other energetically active constituents are homogenized in a mixer.
- the pressing of the moldings is done with a Formkanalstempelpresse with crank drive and mold cooling. Alternatively, the pressing of the moldings can be carried out in a roll or die press.
- a briquette according to the invention may consist predominantly of dry lignite having a water content of about 20% by weight and an addition of polypropylene fibers having a fineness of about 2 to 3 dtex, the fibers having an average length of ⁇ 5 mm.
- the fibers may have been dry blended with the lignite.
- Such a briquette is characterized in particular by high edge strength, which is due to the relatively fine, distributed in the carbon matrix fibers arranged.
- a briquette according to the invention which is optimized in terms of both edge strength and in refractory strength, for example, a share of about 70 percent dry brown coal with a residual water content of about 20 percent by mass, 28.5 percent by weight baking coal in the form of flame coal or gas flame coal and about 1.5% by mass of fibers.
- the fiber content can be adjusted depending on the strength requirement and the calorific value of the fiber, the length of the fibers should be ⁇ 5 mm.
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
Description
Die Erfindung betrifft ein Braunkohlenbrikett.The invention relates to a brown coal briquette.
Es ist hinlänglich bekannt, Pressformlinge oder Briketts aus Stein- oder Braunkohle herzustellen. Ebenso ist es bekannt, Briketts aus Holzabfällen, vorzugsweise aus Sägespänen zu erzeugen. Unterschieden wird in der Regel zwischen solchen Briketts, die bindemittellos verpresst werden und solchen Briketts, die unter Verwendung eines Bindemittels verpresst werden.It is well known to produce molded briquettes or briquettes from lignite or brown coal. It is also known to produce briquettes from wood waste, preferably from sawdust. A distinction is usually made between such briquettes that are pressed without binder and such briquettes that are pressed using a binder.
Das wohl verbreitetste Brikett ist das Braunkohlenbrikett, welches üblicherweise bindemittellos aus getrockneter Braunkohle verpresst wird. Trockenbraunkohle hat in der Regel Eigenschaften, die eine Verpressung ausschließlich unter Einwirkung von Druck, beispielsweise in einer Formkanalstempelpresse, erlauben. Das Material hat hinreichend Bindekräfte, um dem fertigen Erzeugnis eine entsprechende Druck- und Trommelfestigkeit zu verleihen. Auch die Feuerstandsfestigkeit solcher Briketts ist in der Regel nicht beanstandenswert.The most widespread briquette is the brown coal briquette, which is usually pressed without binder from dried lignite. Dry lignite usually has properties that allow compression only under the action of pressure, for example in a Formkanalstempelpresse. The material has sufficient binding forces to give the finished product a corresponding pressure and drum strength. The fire resistance of such briquettes is usually not objectionable.
Steinkohlenbriketts werden beispielsweise üblicherweise unter Verwendung von Bindemitteln hergestellt, als Bindemittel kommt beispielsweise Bitumen in Betracht.For example, bituminous briquettes are usually made using binders, for example, bitumen may be considered as a binder.
Bei der bindemittellosen Brikettierung kommt es allerdings entscheidend auf die Qualität der Kohle an, wenn ein druck-, abrieb- und bruchfestes Erzeugnis hergestellt werden soll, dass außerdem eine verhältnismäßig gute Feuerstandsfestigkeit aufweist. Insbesondere Feinkohle, Kohlengrus und Staub mit zu geringem Feuchtigkeitsanteil lassen sich bekanntermaßen ohne Zuhilfenahme von Bindemittel schlechter brikettieren. Das hieraus resultierende Erzeugnis hat eine geringe Bruch- und Abriebfestigkeit. Insbesondere bei Briketts, die häufig umgeschlagen werden, ist die Bruch- und Abriebfestigkeit ein entscheidendes Kriterium. Durch Abrieb- und Kantenbruch beim Umschlag von Briketts entsteht ein nicht unerheblicher Teil an Feinkohle, Kohlenruß und Staub, der aus verschiedensten Gründen nicht wünschenswert ist.In the case of binderless briquetting, however, the quality of the coal is of crucial importance if a product resistant to pressure, abrasion and breakage is to be produced, which also has a relatively good resistance to fire. In particular, fine coal, coal dust and dust with too low a moisture content can be known to briquet worse without the use of binder. The resulting product has a low resistance to breakage and abrasion. Especially for briquettes, which are handled frequently, the resistance to breakage and abrasion is a decisive criterion. Abrasion and edge breakage during the handling of briquettes produces a not inconsiderable amount of fine coal, carbon black and dust, which is undesirable for a wide variety of reasons.
Der Erfindung liegt daher die Aufgabe zugrunde, einen völlig neuartigen Pressformling aus Braunkohle bzw. mit Braunkohle als Hauptbestandteil zu schaffen, der eine erhöhte Abrieb- und Bruchfestigkeit aufweist. Überraschenderweise hat sich in dieser Hinsicht ein Pressformling mit Braunkohle als besonders vorteilhaft erwiesen, der sich durch einen Zusatz von Fasern mit einer durchschnittlichen Länge von 1 bis 20 mm und einer Feinheit von 1 bis 100 dtex auszeichnet. Insbesondere Fasern höherer Feinheit von etwa 1 bis etwa 60 dtex erhöhen besonders die Kantenfestigkeit der Pressformlinge, wodurch eine beträchtliche Minderung von Abrieb und Bruch beim Umschlag der Pressformlinge erzielt wird.The invention is therefore based on the object to provide a completely new press molding of brown coal or lignite as the main component, which has an increased abrasion and breaking strength. Surprisingly, in this regard, a lignite press molding has proved to be particularly advantageous, which is characterized by the addition of fibers having an average length of 1 to 20 mm and a fineness of 1 to 100 dtex. In particular, higher fineness fibers of from about 1 to about 60 dtex, in particular, increase the edge strength of the molded articles, thereby achieving a significant reduction in abrasion and breakage in the crimping of the molded articles.
Bevorzugt beträgt der Anteil der Fasern zwischen 0,25 bis 20 Masseprozent an dem gesamten Pressformling.Preferably, the proportion of fibers is between 0.25 to 20% by weight of the entire press molding.
Die Braunkohle kann einen Wassergehalt von 5 bis 35 Masseprozent, vorzugsweise zwischen 15 und 25 Masseprozent aufweisen.The brown coal may have a water content of 5 to 35 percent by mass, preferably between 15 and 25 percent by mass.
Gemäß dem bevorzugten Ausführungsbeispiel der Erfindung ist vorgesehen, dass die Mischung bindemittelfrei ist. Als Bindemittel im Sinne der Erfindung ist nicht die Zugabe von Fasern zu verstehen, vielmehr werden unter Bindemittel Bestandteile der Mischung, wie beispielsweise Bitumen, Stärke, Melasse etc. verstanden.According to the preferred embodiment of the invention it is provided that the mixture is binder-free. As a binder in the context of the invention, the addition of fibers is not to be understood, but are understood as the binder components of the mixture, such as bitumen, starch, molasses, etc.
Der Pressformling gemäß der Erfindung kann als weiteren Bestandteil auch bindungsinerte Bestandteile enthalten. Insbesondere kann dieser als weiteren Bestandteil bindungsinerte Steinkohlen aufweisen. Durch den Faserzusatz erhält das Brikett eine so ausgezeichnete Bruch- und Abriebfestigkeit, dass die Mischung mit bindungsinerten Kohlenanteilen in der Größenanordnung von etwa bis zu 40 Masseprozent ohne den Zusatz von Bindemitteln möglich ist.The press molding according to the invention can also contain binding-inert constituents as further constituent. In particular, this may have binding-inert hard coal as a further constituent. The added fiber provides the briquette with such excellent fracture and abrasion resistance that it can be blended with bond-inert carbon in the size range of up to about 40 percent by weight without the addition of binders.
Besonders Braunkohlebriketts haben einen gegenüber Steinkohlebriketts verhältnismäßig geringen Brennwert/Heizwert. Steinkohlebriketts sind jedoch ausnahmslos mit Bindemittel brikettiert und daher aufwändig in der Herstellung. Es besteht daher dann und wann das Bedürfnis, den Brennwert/Heizwert von Braunkohlebriketts durch Zugabe von beispielsweise Anthrazitkohle zu verbessern.Lignite briquettes in particular have a comparatively low calorific value / calorific value compared to hard coal briquettes. Hard coal briquettes are, however, without exception briquetted with binder and therefore expensive to produce. There is therefore the need, the calorific value / calorific value of Brown coal briquettes by adding, for example, anthracite to improve.
Darüber hinaus sind Mischbriketts, beispielsweise bestehend aus Braunkohle, organischen Reststoffen und Bindemittel, beispielsweise in Form von Melasse oder Stärke, bekannt, die den Vorzug eines kostengünstigen Einsatzes der ohnehin bei diversen Produktionsvorgängen anfallenden Reststoffe ermöglichen. Auch diese Briketts sind entweder zu teuer in der Herstellung oder in ihrer Energieausbeute nicht zufriedenstellend.In addition, mixed briquettes, for example consisting of lignite, organic residues and binders, for example in the form of molasses or starch, are known, which allow the advantage of a cost-effective use of the resulting anyway in various production processes residues. These briquettes are either too expensive to produce or unsatisfactory in their energy yield.
Aus der
Angesichts zunehmender Kosten für Öl und Gas stellen Briketts für den Hausbrand eine ernsthafte Alternative zu den zuvor genannten Energieträgern dar.In view of increasing costs for oil and gas, briquettes for domestic fires represent a serious alternative to the aforementioned energy sources.
Insbesondere bei Mischbriketts ist neben einer unter Umständen verringerten Abriebfestigkeit auch die Feuerstandsfestigkeit problematisch.In particular, in mixed briquettes in addition to a possibly reduced abrasion resistance and fire resistance is problematic.
Der Erfindung liegt daher weiterhin die Aufgabe zugrunde, einen völlig neuartigen Pressformling bereitzustellen, der sich besonders kostengünstig und einfach herstellen lässt und der sich als preiswertes Substitut für die herkömmlichen Braunkohlenbriketts eignet.The invention is therefore further based on the object to provide a completely new press molding, which can be particularly cost-effective and easy to manufacture and which is suitable as a cheap substitute for conventional brown coal briquettes.
Insbesondere liegt der Erfindung auch die Aufgabe zugrunde, einen neuen Pressformling zu schaffen, der eine hohe Bruchfestigkeit und hohe Feuerstandsfestigkeit bei hinreichend hoher Energieausbeute und geringen Herstellungskosten bietet.In particular, the invention is also based on the object to provide a new press molding, which offers a high breaking strength and high resistance to fire with a sufficiently high energy yield and low production costs.
Diese Aufgabe wird gelöst durch einen Pressformling aus einer Mischung aus wenigstens zwei verschiedenen Kohlequalitäten und/oder zwei verschiedenen Kohlearten unterschiedlicher Inkohlungsstufen, wobei die Mischung getrocknete Braunkohle mit einem Wasseranteil zwischen 5 und 35 Masseprozent, vorzugsweise zwischen 15 und 25 Masseprozent umfasst und bindemittelfrei ist, mit einem Zusatz von Fasern mit einem Anteil von 0,25-20 Masseprozent an der Mischung und wobei die Fasern eine Länge von zwischen 1 und 10 mm aufweisen.This object is achieved by a press molding of a mixture of at least two different coal qualities and / or two different types of coal of different Kohlohlstufenstufen, wherein the mixture comprises dried lignite with a water content of 5 to 35 percent by mass, preferably between 15 and 25 percent by mass and binder-free, with an addition of fibers in a proportion of 0.25-20% by mass of the mixture and wherein the fibers have a length of between 1 and 10 mm.
Es hat sich herausgestellt, dass ein solcher Pressformling insbesondere wegen des Zusatzes an Fasern eine besondere mechanische Festigkeit aufweist, die es erlaubt auch Kohlequalitäten, die von Haus aus weniger für die Brikettierung geeignet sind, ohne Einsatz von zusätzlichen Bindemitteln zu einem bruchfesten und feuerstandsfesten sowie wasserunlöslichen Brikett zu verpressen. Es ist für den Fachmann ohne Weiteres verständlich, dass die Erfindung auch andersartige Formkörper, wie beispielsweise Pellets aus Kollergangpressen oder dergleichen einschließt.It has been found that such a press molding, in particular because of the addition of fibers has a special mechanical strength, which also allows coal qualities that are less suitable for briquetting, without the use of additional binders to a shatterproof and fire-resistant and water-insoluble Press briquette. It will be readily understood by those skilled in the art that the invention also includes other shaped articles, such as pellet extruder pellets or the like.
Bei einer Variante des Pressformlings gemäß der Erfindung sind als Hauptbestandteile Trockenbraunkohle und Pechkohle oder backende Steinkohle vorgesehen. Insbesondere die Verwendung von Gasflammkohle in Mischung mit Trockenbraunkohle hat sich als besonders günstig in Hinblick auf die Energieausbeute erwiesen. Beispielsweise kann der Pressformling aus etwa 70 Masseprozent Trockenbraunkohle und etwa 30 Masseprozent Steinkohle bestehen. Bei den vorstehend erwähnten Prozentangaben ist der Zusatz an Fasern nicht berücksichtigt.In a variant of the press molding according to the invention dry brown coal and pitch coal or baking coal are provided as main components. In particular, the use of gas flame coal mixed with dry lignite has proven to be particularly favorable in terms of energy yield. For example, the molding may consist of about 70% dry brown coal by weight and about 30% by weight hard coal. In the percentages mentioned above, the addition of fibers is not taken into account.
Die Steinkohle verhält sich in Bezug auf das Auslösen von Bindekräften während des Brikettierprozesses nahezu inert. In Folge der geringen Anzahl ausgelöster Bindekräfte (Verdünnungseffekt durch inerte Steinkohle) nähme die Druck- und Trommelfestigkeit des so erhaltenen Mischbriketts im Vergleich zu einem zu 100 % aus Trockenbraunkohle bestehenden Brikett signifikant ab. Der erfindungsgemäß vorgesehene Zusatz an Fasern gleicht einen solchen Verlust an mechanischer Festigkeit mindestens aus.The coal behaves almost inert with respect to the triggering of binding forces during the briquetting process. As a result of the small number of induced binding forces (dilution effect due to inert hard coal), the pressure and drum strength of the mixed briquette thus obtained would decrease significantly compared with a briquette consisting of 100% dry brown coal. The inventively provided addition of fibers at least compensates for such a loss of mechanical strength.
Anstelle von Steinkohle kann die Mischung auch andere organische Reststoffe, beispielsweise Produktionsrückstände aus der Papier- und Zuckerindustrie enthalten.Instead of hard coal, the mixture may also contain other organic residues, such as production residues from the paper and sugar industries.
Vorzugsweise umfasst die Mischung zwischen 5 und 40 Masseprozent Steinkohle bzw. zwischen 60 und 95 Masseprozent Braunkohle.Preferably, the mixture comprises between 5 and 40% by weight hard coal or between 60 and 95% by weight brown coal.
Als Fasern kann beispielsweise getrocknetes, ggf. zerkleinertes organisches Material vorgesehen sein. In Betracht kommen beispielsweise Stroh, Sisal, Kokos, Hanf, Heu, Textilfasern oder dergleichen. Alternativ können als Fasern Polypropylenfäden, Stahlfasern, Glasfasern oder Steinwollfasern sowie Abfallfasern jeglicher Art wie z. B. Abfälle aus der Teppichbodenkonstruktion vorgesehen sein.As fibers, for example, dried, optionally comminuted organic material may be provided. For example, straw, sisal, coconut, hemp, hay, textile fibers or the like may be considered. Alternatively, as fibers polypropylene yarns, steel fibers, glass fibers or rockwool fibers and waste fibers of any kind such. For example, waste may be provided from the carpet floor construction.
Die Erfindung betrifft weiterhin ein Verfahren, bei dem die Mischung der vorzugsweise vorgetrockneten oder getrockneten Grundbestandteile ohne Zusatz von Bindemittel unter Anwendung von Druck verpresst wird. Die einzelnen Bestandteile der Mischung in Form von Trockenbraunkohle, Fasermaterial und gegebenenfalls Steinkohle oder anderer energetisch wirksamer Bestandteile werden in einem Mischer homogenisiert. Das Pressen der Formlinge erfolgt mit einer Formkanalstempelpresse mit Schubkurbelantrieb und Formzeugkühlung. Alternativ kann das Pressen der Formlinge in einer Walzen- oder Matrizenpresse erfolgen.The invention further relates to a method in which the mixture of the preferably predried or dried basic components is compressed without the addition of binder under the application of pressure. The individual components of the mixture in the form of dry lignite, fiber material and possibly hard coal or other energetically active constituents are homogenized in a mixer. The pressing of the moldings is done with a Formkanalstempelpresse with crank drive and mold cooling. Alternatively, the pressing of the moldings can be carried out in a roll or die press.
Ein Brikett gemäß der Erfindung kann beispielsweise überwiegend aus Trockenbraunkohle mit einem Wassergehalt von etwa 20 Masseprozent und einem Zusatz an Polypropylenfasern mit einer Feinheit von etwa 2 bis 3 dtex bestehen, wobei die Fasern eine durchschnittliche Länge von ≤ 5 mm aufweisen. Die Fasern können beispielsweise trocken mit der Braunkohle vermischt worden sein. Es ist jedoch auch möglich, die Fasern vor Vermischung mit der Braunkohle in Wasser zu dispergieren.For example, a briquette according to the invention may consist predominantly of dry lignite having a water content of about 20% by weight and an addition of polypropylene fibers having a fineness of about 2 to 3 dtex, the fibers having an average length of ≤ 5 mm. For example, the fibers may have been dry blended with the lignite. However, it is also possible to disperse the fibers in water before mixing with the lignite.
Ein solches Brikett zeichnet sich insbesondere durch hohe Kantenfestigkeit aus, was auf die verhältnismäßig feinen, in der Kohlenmatrix verteilt angeordneten Fasern zurückzuführen ist.Such a briquette is characterized in particular by high edge strength, which is due to the relatively fine, distributed in the carbon matrix fibers arranged.
Ein Brikett gemäß der Erfindung, welches sowohl hinsichtlich der Kantenfestigkeit als auch hinsichtlich der Feuerstandsfestigkeit optimiert ist, kann beispielsweise einen Anteil von etwa 70 Masseprozent Trockenbraunkohle mit einem Restwassergehalt von etwa 20 Masseprozent, 28,5 Masseprozent backende Steinkohle in Form von Flammkohle oder Gasflammkohle sowie etwa 1,5 Masseprozent an Fasern enthalten. Der Faseranteil lässt sich je nach Festigkeitsanforderung und je nach Heizwert der Faser einstellen, die Länge der Fasern sollte ≤ 5 mm betragen.A briquette according to the invention, which is optimized in terms of both edge strength and in refractory strength, for example, a share of about 70 percent dry brown coal with a residual water content of about 20 percent by mass, 28.5 percent by weight baking coal in the form of flame coal or gas flame coal and about 1.5% by mass of fibers. The fiber content can be adjusted depending on the strength requirement and the calorific value of the fiber, the length of the fibers should be ≤ 5 mm.
Versuche mit der Erfindung haben gezeigt, dass die erfindungsgemäß zur Brikettierung bzw. Verpressung vorgeschlagenen Mischungen es ermöglichen, die bekannten Strangpressen mit einer höheren Geschwindigkeit ohne Festigkeitsverlust des Erzeugnisses zu betreiben, was mit einer Produktionssteigerung und Kostensenkung einhergeht.Experiments with the invention have shown that the mixtures proposed according to the invention for briquetting make it possible to operate the known extruders at a higher speed without loss of strength of the product, which is accompanied by an increase in production and a reduction in costs.
Claims (18)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10013346A EP2275521A1 (en) | 2005-12-15 | 2006-11-28 | Moulded body comprising brown coal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510060426 DE102005060426A1 (en) | 2005-12-15 | 2005-12-15 | Press molding |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1798277A2 true EP1798277A2 (en) | 2007-06-20 |
EP1798277A3 EP1798277A3 (en) | 2008-07-09 |
Family
ID=37891740
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10013346A Withdrawn EP2275521A1 (en) | 2005-12-15 | 2006-11-28 | Moulded body comprising brown coal |
EP06024576A Withdrawn EP1798277A3 (en) | 2005-12-15 | 2006-11-28 | Moulded body comprising brown coal |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10013346A Withdrawn EP2275521A1 (en) | 2005-12-15 | 2006-11-28 | Moulded body comprising brown coal |
Country Status (2)
Country | Link |
---|---|
EP (2) | EP2275521A1 (en) |
DE (1) | DE102005060426A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018228619A1 (en) | 2017-06-13 | 2018-12-20 | Christian Koch | Method and device for the catalytic pressureless depolymerization of hydrocarbon-containing substances |
EP3647394A1 (en) | 2018-11-05 | 2020-05-06 | Sebastian Fehrenbach | Optimizations in the pressureless oiling of hydrocarbon-containing substances |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102206523B (en) * | 2011-04-21 | 2013-04-03 | 李功民 | Device for brown coal powder thermoforming |
CN104087328B (en) * | 2014-07-31 | 2016-01-06 | 孙孟君 | Improve the coking by coke oven method of chemical industry Jiao by long-flame coal proportioning |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2124555A1 (en) | 1971-05-18 | 1973-01-04 | Bergwerksverband Gmbh | Carbon mouldings - by moulding mixt of carbon and elastomer under pressure at 100-250c |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT179771B (en) | 1952-12-03 | 1954-10-11 | Eugen Dipl Ing Gadolla | Mixed briquette and process for its manufacture |
AT374490B (en) * | 1982-07-16 | 1984-04-25 | Blahuschek Wilhelm | METHOD FOR PRODUCING BRIQUETTE FROM CARBON DUST AND WOOD SHAVINGS |
AU2449884A (en) * | 1983-02-11 | 1984-08-16 | Australian Portland Cement Ltd. | Briquetting using fibrous materials or non fibrous chemical binders |
GB9111021D0 (en) * | 1991-05-22 | 1991-07-17 | Darby William F | Solid fuel |
DE4213829C2 (en) * | 1992-04-28 | 1994-11-03 | Hoelter Heinz | Process for producing an environmentally friendly fuel from dead wood |
DE4325069C2 (en) * | 1993-07-19 | 1995-09-21 | Wegner & Co Verfahrenstechnik | Process for making fuel briquettes |
DE19537238A1 (en) * | 1995-10-06 | 1997-04-10 | Zeitzer Maschinen Anlagen Gera | Preparation of water-resistant agglomerates from mixt. of lignite and renewable bio-material |
DE19608386C2 (en) * | 1996-03-05 | 1998-02-19 | Lausitzer Braunkohle Ag | Process for the production of solid and porous lignite fuels with improved combustion properties |
US5916826A (en) * | 1997-12-05 | 1999-06-29 | Waste Technology Transfer, Inc. | Pelletizing and briquetting of coal fines using binders produced by liquefaction of biomass |
DE10106211A1 (en) * | 2001-02-10 | 2002-08-29 | Univ Freiberg Bergakademie | Production of high value small piece fuels from raw materials involves using granulating mixer with activated soft brown coal as granulating agent and binder |
DE10150135C2 (en) * | 2001-10-11 | 2003-08-14 | Lausitzer Braunkohle Ag | Process for the production of a high quality, large piece of chimney fuel and chimney fuel |
-
2005
- 2005-12-15 DE DE200510060426 patent/DE102005060426A1/en not_active Ceased
-
2006
- 2006-11-28 EP EP10013346A patent/EP2275521A1/en not_active Withdrawn
- 2006-11-28 EP EP06024576A patent/EP1798277A3/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2124555A1 (en) | 1971-05-18 | 1973-01-04 | Bergwerksverband Gmbh | Carbon mouldings - by moulding mixt of carbon and elastomer under pressure at 100-250c |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018228619A1 (en) | 2017-06-13 | 2018-12-20 | Christian Koch | Method and device for the catalytic pressureless depolymerization of hydrocarbon-containing substances |
EP3647394A1 (en) | 2018-11-05 | 2020-05-06 | Sebastian Fehrenbach | Optimizations in the pressureless oiling of hydrocarbon-containing substances |
Also Published As
Publication number | Publication date |
---|---|
DE102005060426A1 (en) | 2007-06-21 |
EP1798277A3 (en) | 2008-07-09 |
EP2275521A1 (en) | 2011-01-19 |
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