WO2010075911A1 - Method and system for homogenizing the delivery of fuels in a gasifier for generating syngas - Google Patents

Method and system for homogenizing the delivery of fuels in a gasifier for generating syngas Download PDF

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Publication number
WO2010075911A1
WO2010075911A1 PCT/EP2009/008268 EP2009008268W WO2010075911A1 WO 2010075911 A1 WO2010075911 A1 WO 2010075911A1 EP 2009008268 W EP2009008268 W EP 2009008268W WO 2010075911 A1 WO2010075911 A1 WO 2010075911A1
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WO
WIPO (PCT)
Prior art keywords
burner
fuel
gas
gasifier
combustion chamber
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PCT/EP2009/008268
Other languages
German (de)
French (fr)
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WO2010075911A4 (en
Inventor
Stefan Hamel
Johannes Kowoll
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Uhde Gmbh
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
Priority to US12/998,918 priority Critical patent/US20110277673A1/en
Priority to CA2747298A priority patent/CA2747298A1/en
Priority to UAA201108856A priority patent/UA103213C2/en
Priority to RU2011129566/06A priority patent/RU2011129566A/en
Priority to EP09760745A priority patent/EP2359060A1/en
Priority to CN2009801504582A priority patent/CN102257322A/en
Application filed by Uhde Gmbh filed Critical Uhde Gmbh
Priority to AP2011005727A priority patent/AP2011005727A0/en
Priority to AU2009335360A priority patent/AU2009335360A1/en
Priority to BRPI0923040A priority patent/BRPI0923040A2/en
Publication of WO2010075911A1 publication Critical patent/WO2010075911A1/en
Publication of WO2010075911A4 publication Critical patent/WO2010075911A4/en
Priority to ZA2011/05161A priority patent/ZA201105161B/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/48—Apparatus; Plants
    • C10J3/50—Fuel charging devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
    • F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00—Feeding arrangements
    • F23K2203/006—Fuel distribution and transport systems for pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00—Feeding arrangements
    • F23K2203/20—Feeding/conveying devices
    • F23K2203/201—Feeding/conveying devices using pneumatic means

Definitions

  • the invention is directed to a method for equalizing and controlling the pneumatically promoted with dense phase promotion solid fuels in a gasifier for the production of synthesis gas.
  • the controlled supply of combustible dust in an entrained-flow gasifier is described, for example, in DE 10 2005 047 583 A. It is known to convert the fuel with the burners installed in the vertical gasifier wall and substantially horizontal, wherein the fuel of finely divided or dusty ( ⁇ 0.5 mm) fuel particles, e.g. Coal, Petrokoks, biological waste and other fuels is reacted with oxygen-containing gasification agents under elevated pressure at temperatures above the slag melting point.
  • finely divided or dusty ( ⁇ 0.5 mm) fuel particles e.g. Coal, Petrokoks, biological waste and other fuels is reacted with oxygen-containing gasification agents under elevated pressure at temperatures above the slag melting point.
  • a carbonaceous fuel is reacted with an oxygen-containing gas, wherein the oxygen-containing gas is supplied to the sub-stoichiometric ratio, so as to obtain a hydrogen and carbon monoxide-containing product gas.
  • the fuel-oxygen ratio is set in a narrow range.
  • the pressure gasification burner with coaxial channels are usually used, with a mixing of the fed media not in the burner, but only in the carburetor.
  • An example of a burner used in a pressure gasification plant is shown in detail, for example, in EP 0 437 698 A1.
  • the supply of the burner with fuel usually takes place from a slightly above the gasifier pressure storage tank by means of dense phase conveying.
  • dense phase conveying a pneumatic conveying is referred to, wherein the carrier gas does not transport the fuel particles as individual particles, but in the form of dense fillings or plugs that fill the entire pipe cross-section.
  • dense-phase conveyors have velocities of 4 to 6 m / s, the high solids loading of the gas stream leading to a nevertheless high transport volume.
  • the dense phase conveying is very gentle on materials and, above all, is less susceptible to interference when it comes to adhesive or moist goods to be transported.
  • the quality of the gasification is significantly influenced by the uniformity of the coal supply to the burner. While variations are detected and taken into account over longer time intervals (for example, by intended control interventions or by changing the feed coal, etc.), very short-term fluctuations in the conveying quality (conveying density and speed) can not be compensated.
  • the dense phase conveying in the broadest sense is a fluidized gas / solids mixture
  • the fluctuations in density and velocity typical of the fluidized bed are also to be observed here.
  • These can only be influenced by indirect measures such as the design of the supply to the delivery line.
  • the storage tank which supplies the burners via a feed line
  • the burners are due to the vertical design of the carburetor at a much higher level.
  • the installation of the reservoir "bottom” is inexpensive, especially if the required fuel spill into the feed tank based on gravity flow and therefore must be positioned above the reservoir.
  • Object of the present invention is to provide a method described above in such a way that a significantly homogenized supply of coal to the burner is possible, whereby the short-term fluctuations minimized and thus the gasification quality is improved and the control of the amount of coal to the burner is made more effective.
  • this object is achieved according to the invention in that the fine-grained to dust-like fuel from a positioned below the burner level storage tank initially promoted to a level above the burner level and is subsequently homogenized in a downward direction to the burner line. It has been found that a uniformity of the fuel / gas mixture transported in the dense stream is achieved by the inventive method, which is significantly better than, for example, the promotion by horizontally extending lines. Due to the homogenization in the downpipe in front of the burner, the fuel particles are accelerated by the gravitational attraction, whereby any gas bubbles in the mixture are filled with fuel during the fall.
  • Embodiments emerge from the subclaims. It can be provided that the homogenization takes place in a downwardly directed line whose length corresponds to at least five times the diameter of the pipe.
  • the fuel is homogenized in a down pipe guided from a manifold, wherein the downpipe is oriented at angles ⁇ 20 °, preferably in 0 ° to the vertical.
  • the region in which the downpipe can be adjusted with respect to the vertical can also be chosen differently than claimed here, depending on which material is used, the homogenization in the downpipe being decisive.
  • a further advantageous embodiment according to the invention is that the fuel flow gas is supplied to control the fuel flow, the mixing is made shortly before or in the burner.
  • the example shows that a very fast adjustment of the fuel throughput is possible.
  • the regulatory range is limited by the amount of gas required and the erosion-limited fuel velocity in the burner.
  • the fuel flow rate can be changed by +/- 10% in a typical application.
  • Fig. 1 is a schematic layer diagram and in
  • Fig. 2 is an enlarged section in the region of a not burner shown in an indicated carburetor wall.
  • Fig. 1 shows the dense stream promotion 2a and 2b from the storage tank 1 in the burner ' 4a, 4b of the carburetor 3.
  • the outlet of the storage container is lower than the burner, so that the fuel should be conveyed horizontally and upwards.
  • the fuel is first passed over the burner level and then homogenized after deflection in an example 3 m long downpipe. Shortly before the burner, the lines are deflected to feed the fuel horizontally into the burner and auxiliary gas IIa, IIb is fed into the line.
  • An oxygen-containing gas 5a, 5b and a moderating gas 6a, 6b, with which the gasification parameters are influenced, are likewise fed into the burner.
  • auxiliary gas IIa, IIb can alternatively be fed directly into the burner or into the fuel channel of the burner.
  • Fig. 2 shows an alternative embodiment of the method.
  • Density flow conveying 2 is directed in an arc in the vertical downpipe.
  • an auxiliary gas 11 or a part of the moderation gas 6, for example CO 2 is fed into the gas introduction device 10 in order to reduce the delivery density and the fuel flow.

Abstract

The invention relates to a method and to a system for homogenizing and controlling the solid fuels delivered pneumatically using dense flow conveyance to a gasifier for generating syngas, configured such that considerably homogenized feeding of the coal to the combustion chamber is enabled, wherein the short-term fluctuations are minimized and the gasification quality is thereby improved and control of the coal quantities to the combustion chamber are configured more effectively. Said object is achieved in that the fine-grained to powdered fuel is first delivered from a storage container (1) positioned below the combustion chamber level to a level above the combustion chamber level, and subsequently homogenized in a line directed downward toward the combustion chamber (4a, 4b).

Description

"Verfahren und Anlage zur Vergleichmäßigung der Förderung von Brennstoffen in einen Vergaser zur Erzeugung von Svntheseαas" "Method and apparatus for equalizing the production of fuels in a gasifier for the production of sudnesese"
Die Erfindung richtet sich auf ein Verfahren zur Vergleichmäßigung und Regelung der mit Dichtstromförderung pneumatisch geförderten festen Brennstoffe in einen Vergaser zur Erzeugung von Synthesegas .The invention is directed to a method for equalizing and controlling the pneumatically promoted with dense phase promotion solid fuels in a gasifier for the production of synthesis gas.
Die geregelte Zufuhr von Brennstaub in einem Flugstromvergaser ist beispielsweise in der DE 10 2005 047 583 A beschrieben. Dabei ist es bekannt, den Brennstoff mit den in die vertikale Vergaserwand eingebauten und im Wesentlichen waagerecht ausgerichteten Brennern umzusetzen, wobei der Brennstoff aus fein zerteilten oder staubförmigen (< 0,5 mm) BrennstoffPartikeln, z.B. Kohle, Petrokoks, biologischen Abfällen und anderen Brennstoffen mit sauerstoffhaltigen Vergasungsmitteln unter erhöhtem Druck bei Temperaturen oberhalb des Schlackeschmelzpunktes umgesetzt wird.The controlled supply of combustible dust in an entrained-flow gasifier is described, for example, in DE 10 2005 047 583 A. It is known to convert the fuel with the burners installed in the vertical gasifier wall and substantially horizontal, wherein the fuel of finely divided or dusty (<0.5 mm) fuel particles, e.g. Coal, Petrokoks, biological waste and other fuels is reacted with oxygen-containing gasification agents under elevated pressure at temperatures above the slag melting point.
Eine Vorrichtung und ein Verfahren zur pneumatischen Beförderung von Schüttgütern im Dichtstromverfahren ist aus der WO 2006/015702 Al bekannt.An apparatus and a method for the pneumatic transport of bulk materials in the dense phase method is known from WO 2006/015702 Al.
Bei der Durchführung von Druckvergasungen wird ein kohlenstoffhaltiger Brennstoff mit einem sauerstoffhaltigen Gas umgesetzt, wobei das sauerstoffhaltige Gas dem unter- stöchiometrischen Verhältnis zugeführt wird, so dass man ein Wasserstoff- und kohlenmonoxidhaltiges Produktgas erhält. Um einen hohen Umsatz des Brennstoffes und einen hohen Wirkungsgrad zu erreichen, ist das Brennstoff-Sauerstoff-Verhältnis in einem engen Bereich einzustellen.In carrying out pressure gasification, a carbonaceous fuel is reacted with an oxygen-containing gas, wherein the oxygen-containing gas is supplied to the sub-stoichiometric ratio, so as to obtain a hydrogen and carbon monoxide-containing product gas. In order to achieve a high conversion of the fuel and high efficiency, the fuel-oxygen ratio is set in a narrow range.
In der Druckvergasung werden üblicherweise Brenner mit koaxialen Kanälen eingesetzt, wobei eine Vermischung der zugeführten Medien nicht im Brenner, sondern erst im Vergaser erfolgt. Ein Beispiel für einen in einer Druckvergasungsanlage eingesetzten Brenner ist beispielsweise in der EP 0 437 698 Al detailliert dargestellt. Die Versorgung der Brenner mit Brennstoff erfolgt üblicherweise aus einem geringfügig über Vergaserdruck stehenden Vorlagebehälter mittels Dichtstromförderung. Als Dichtstromförderung wird dabei eine pneumatische Förderung bezeichnet, wobei das Trägergas die Brennstoffpartikel nicht als Einzelpartikel transportiert, sondern in Form von dichten Füllungen oder Pfropfen, die den gesamten Rohrquerschnitt ausfüllen. In der Regel besitzen Dichtstromförderungen Geschwindigkeiten von 4 bis 6 m/s, wobei die hohe Feststoffbeladung des Gasstromes zu einer dennoch hohen Transportmenge führt. Die Dichtstromförderung ist sehr materialschonend und ist vor allem wenig störanfällig gegenüber verklebendem oder feuchtem Transportgut.In the pressure gasification burner with coaxial channels are usually used, with a mixing of the fed media not in the burner, but only in the carburetor. An example of a burner used in a pressure gasification plant is shown in detail, for example, in EP 0 437 698 A1. The supply of the burner with fuel usually takes place from a slightly above the gasifier pressure storage tank by means of dense phase conveying. As dense phase conveying a pneumatic conveying is referred to, wherein the carrier gas does not transport the fuel particles as individual particles, but in the form of dense fillings or plugs that fill the entire pipe cross-section. As a rule, dense-phase conveyors have velocities of 4 to 6 m / s, the high solids loading of the gas stream leading to a nevertheless high transport volume. The dense phase conveying is very gentle on materials and, above all, is less susceptible to interference when it comes to adhesive or moist goods to be transported.
Die Güte der Vergasung wird maßgeblich durch die Gleichförmigkeit der Kohlezufuhr zum Brenner beeinflusst. Während Variationen über längere Zeitintervalle (z.B. durch beabsichtigte Regeleingriffe oder durch Änderung der Einsatzkohle, etc.) messtechnisch erfasst und berücksichtigt werden, können sehr kurzfristige Fluktuationen in der Förderqualität (Förderdichte und -geschwindigkeit) nicht kompensiert werden.The quality of the gasification is significantly influenced by the uniformity of the coal supply to the burner. While variations are detected and taken into account over longer time intervals (for example, by intended control interventions or by changing the feed coal, etc.), very short-term fluctuations in the conveying quality (conveying density and speed) can not be compensated.
Da es sich bei der Dichtstromförderung im weitesten Sinne um ein fluidisiertes Gas-/Feststoffgemisch handelt, sind hier auch die wirbelschichttypischen Fluktuationen in Dichte und Geschwindigkeit zu beobachten. Diese können nur durch indirekte Maßnahmen wie die Gestaltung der Zufuhr in die Förderleitung beeinflusst werden. Dazu ist weiterhin bekannt, dass es in langen horizontalen Abschnitten der Förderleitung zu Absetzerscheinungen des Feststoffes kommen kann, was üblicherweise durch zusätzliche Gaszufuhr minimiert wird. Eine weitere Homogenisierung wird dann erreicht, wenn die Leitung wieder aufwärts führt.Since the dense phase conveying in the broadest sense is a fluidized gas / solids mixture, the fluctuations in density and velocity typical of the fluidized bed are also to be observed here. These can only be influenced by indirect measures such as the design of the supply to the delivery line. For this purpose, it is also known that come in long horizontal sections of the delivery line settling phenomena of the solid can, which is usually minimized by additional gas supply. Further homogenization is achieved when the line leads up again.
Aufgrund des Platzbedarfes und der anlagenspezifischen Aufstellung ist es üblicherweise so, dass der Vorlagebehälter, der die Brenner über eine Förderleitung versorgt, sich im Anlagengerüst "unten" befindet, während die Brenner sich aufgrund der vertikalen Bauweise des Vergasers auf einem deutlich höheren Level befinden. Die Aufstellung des Vorlagebehälters "unten" ist kostengünstig, insbesondere wenn die erforderliche BrennstoffSchleusung in den Vorlagebehälter auf Schwerkraftfluss basiert und daher oberhalb des Vorlagebehälters positioniert sein muss.Due to the space required and the plant-specific installation, it is usually the case that the storage tank, which supplies the burners via a feed line, is located in the plant stand "down", while the burners are due to the vertical design of the carburetor at a much higher level. The installation of the reservoir "bottom" is inexpensive, especially if the required fuel spill into the feed tank based on gravity flow and therefore must be positioned above the reservoir.
Bisher erfolgte die Leitungsführung der Förderleitung zu den Brennern von "unten" nach "oben" auf Brennerebene und wurde dort meist waagerecht an den Anschlussstutzen des Brenners geführt, von wo die Kohle in den Brenner gelangte.So far, the routing of the delivery line to the burners from "bottom" to "top" at the burner level and was there usually led horizontally to the connecting piece of the burner, from where the coal reached the burner.
Aufgabe der vorliegenden Erfindung ist es, ein eingangs beschriebenes Verfahren so auszugestalten, dass eine deutlich homogenisierte Zufuhr der Kohle zum Brenner ermöglicht wird, wobei die kurzzeitigen Fluktuationen minimiert und damit die Vergasungsqualität verbessert wird und die Regelung der Kohlemengen zum Brenner effektiver gestaltet wird.Object of the present invention is to provide a method described above in such a way that a significantly homogenized supply of coal to the burner is possible, whereby the short-term fluctuations minimized and thus the gasification quality is improved and the control of the amount of coal to the burner is made more effective.
Mit einem Verfahren der eingangs bezeichneten Art wird diese Aufgabe gemäß der Erfindung dadurch gelöst, dass der feinkörnige bis staubförmige Brennstoff aus einem unterhalb der Brennerebene positionierten Vorlagebehälter zunächst auf ein Niveau oberhalb der Brennerebene gefördert und nachfolgend in einer abwärts zum Brenner gerichteten Leitung homogenisiert wird. Es hat sich gezeigt, dass durch die erfindungsgemäße Verfahrensweise eine Gleichförmigkeit des im Dichtstrom transportierten Brennstoff-/Gasgemisches erreicht wird, die deutlich besser ist als beispielsweise die Förderung durch horizontal verlaufende Leitungen. Durch die Homogenisierung in der Fallleitung vor dem Brenner werden die Brennstoff- Partikel durch die Erdanziehung beschleunigt, wobei eventuell sich im Gemisch befindliche Gasblasen beim Fallen mit Brennstoff gefüllt werden.With a method of the type described, this object is achieved according to the invention in that the fine-grained to dust-like fuel from a positioned below the burner level storage tank initially promoted to a level above the burner level and is subsequently homogenized in a downward direction to the burner line. It has been found that a uniformity of the fuel / gas mixture transported in the dense stream is achieved by the inventive method, which is significantly better than, for example, the promotion by horizontally extending lines. Due to the homogenization in the downpipe in front of the burner, the fuel particles are accelerated by the gravitational attraction, whereby any gas bubbles in the mixture are filled with fuel during the fall.
Ausgestaltungen ergeben sich aus den Unteransprüchen. Dabei kann vorgesehen sein, dass die Homogenisierung in einer abwärts gerichteten Leitung erfolgt, deren Länge wenigstens dem fünffachen Leitungsdurchmesser entspricht.Embodiments emerge from the subclaims. It can be provided that the homogenization takes place in a downwardly directed line whose length corresponds to at least five times the diameter of the pipe.
Als zweckmäßig hat sich erwiesen, wenn der Brennstoff in einer aus einem Krümmer geführten Fallleitung homogenisiert wird, wobei die Fallleitung in Winkeln < 20° vorzugsweise in 0° zur Vertikalen ausgerichtet ist.It has proven to be advantageous if the fuel is homogenized in a down pipe guided from a manifold, wherein the downpipe is oriented at angles <20 °, preferably in 0 ° to the vertical.
Der Bereich, in dem die Fallleitung gegenüber der Senkrechten eingestellt sein kann, kann auch anders als hier beansprucht gewählt werden, je nachdem, welches Material zum Einsatz kommt, entscheidend ist die Homogenisierung im Fallrohr.The region in which the downpipe can be adjusted with respect to the vertical can also be chosen differently than claimed here, depending on which material is used, the homogenization in the downpipe being decisive.
Eine weitere zweckmäßige Ausgestaltung nach der Erfindung besteht darin, dass zur Regelung des Brennstoffdurchsatzes dem Brennstoffström Gas zugeführt wird, wobei die Vermischung kurz vorher oder im Brenner vorgenommen wird.A further advantageous embodiment according to the invention is that the fuel flow gas is supplied to control the fuel flow, the mixing is made shortly before or in the burner.
Durch Zugabe von Hilfsgas in den mit Dichtstrom geförderten Brennstoffström wird eine Verdünnung verursacht, d.h. die Förderdichte wird verringert. Die Geschwindigkeit des verdünnten Brennstoffes wird zwar erhöht, gleichwohl überwiegt der Einfluss der verringerten Dichte, wobei der Durchsatz verringert wird.The addition of auxiliary gas into the dense-stream fuel stream causes dilution, ie, the feed density is reduced. Although the speed of the diluted fuel is increased, nevertheless outweighs the effect of reduced density, thereby reducing throughput.
Beispiel:Example:
Mit Dichtstromförderung werden 10 kg/s Brennstoff mit Dichte 400 kg/m3 und Geschwindigkeit 5 m/s durch einen Brenner in den Vergaser gefördert. In der Rohrleitung entsteht wegen der Reibung und Aufwärtsförderung ein Druckverlut von 100 kPa. Im Brenner entsteht durch Reibung und weitere Beschleunigung der Suspension ein Druckverlust von 20 kPa. Um den Durchsatz zu verringern, wird Hilfsgas direkt vor dem Brenner in die Brennstoffleitung eingespeist, wodurch der Volumenstrom nahezu verdoppelt wird. Der Druckverlust im Brennstoffkanal des Brenners wird dadurch ebenfalls verdoppelt. Da der Brennstoffkanal nur 2 m lang ist, wird er bereits nach 0,2 s mit dem verdünnten Brennstoff gefüllt. Bereits nach dieser kurzen Zeit wird der Brennstoffdurchsatz verringert.With dense phase conveying 10 kg / s of fuel with a density of 400 kg / m 3 and speed 5 m / s are conveyed through a burner in the carburetor. Due to friction and upward conveyance, a pressure leak of 100 kPa occurs in the pipeline. The burner creates a pressure drop of 20 kPa due to friction and further acceleration of the suspension. In order to reduce the throughput, auxiliary gas is fed into the fuel line directly in front of the burner, whereby the volume flow is almost doubled. The pressure loss in the fuel channel of the burner is thereby also doubled. Since the fuel channel is only 2 m long, it is already filled after 0.2 s with the diluted fuel. Already after this short time the fuel flow rate is reduced.
Das Beispiel zeigt, dass eine sehr schnelle Anpassung des Brennstoffdurchsatzes möglich ist. Der Regelungsbereich ist jedoch durch die erforderliche Gasmenge und die wegen Erosion begrenzte Brennstoffgeschwindigkeit im Brenner beschränkt. Mit dieser Methode kann der Brennstoffdurchsatz in einer typischen Anwendung um +/- 10 % verändert werden.The example shows that a very fast adjustment of the fuel throughput is possible. However, the regulatory range is limited by the amount of gas required and the erosion-limited fuel velocity in the burner. With this method, the fuel flow rate can be changed by +/- 10% in a typical application.
Die Erfindung ist nachstehend anhand der Zeichnung beispielsweise näher erläutert. Diese zeigt inThe invention is explained in more detail below with reference to the drawing, for example. This shows in
Fig. 1 ein schematisches Lagenschaltbild sowie inFig. 1 is a schematic layer diagram and in
Fig. 2 einen vergrößerten Ausschnitt im Bereich eines nicht näher dargestellten Brenners in einer angedeuteten Vergaserwand .Fig. 2 is an enlarged section in the region of a not burner shown in an indicated carburetor wall.
Fig. 1 zeigt die Dichtstromförderung 2a und 2b aus dem Vorlagebehälter 1 in die Brenner '4a, 4b des Vergasers 3. Der Austritt des Vorlagebehälters ist tiefer als die Brenner, so dass der Brennstoff horizontal und aufwärts gefördert werden sollte. Um jedoch eine homogene BrennstoffSuspension zu erreichen, wird der Brennstoff zuerst über die Brennerebene geleitet und dann nach der Umlenkung in einer z.B. 3 m langen Fallleitung homogenisiert. Kurz vor dem Brenner werden die Leitungen umgelenkt, um den Brennstoff waagerecht in die Brenner einzuspeisen und Hilfsgas IIa, IIb wird in die Leitung eingespeist. In den Brenner werden ebenfalls ein sauerstoffhaltiges Gas 5a, 5b und ein Moderationsgas 6a, 6b eingespeist, mit dem die Vergasungsparameter beeinflusst werden.Fig. 1 shows the dense stream promotion 2a and 2b from the storage tank 1 in the burner ' 4a, 4b of the carburetor 3. The outlet of the storage container is lower than the burner, so that the fuel should be conveyed horizontally and upwards. However, in order to achieve a homogeneous fuel suspension, the fuel is first passed over the burner level and then homogenized after deflection in an example 3 m long downpipe. Shortly before the burner, the lines are deflected to feed the fuel horizontally into the burner and auxiliary gas IIa, IIb is fed into the line. An oxygen-containing gas 5a, 5b and a moderating gas 6a, 6b, with which the gasification parameters are influenced, are likewise fed into the burner.
Das Hilfsgas IIa, IIb kann alternativ direkt in den Brenner bzw. in den Brennstoffkanal des Brenners zugeleitet werden.The auxiliary gas IIa, IIb can alternatively be fed directly into the burner or into the fuel channel of the burner.
Fig. 2 zeigt eine alternative Ausführung des Verfahrens. Dichtstromförderung 2 wird in einem Bogen in die vertikale Fallleitung geleitet. Vor dem vertikal ausgerichteten Brennerstutzen 12 wird ein Hilfsgas 11 oder ein Teil des Moderationsgases 6, z.B. CO2, in die Gaseinleitungsvorrichtung 10 eingespeist, um die Förderdichte und den Brennstoffström zu verringern. Fig. 2 shows an alternative embodiment of the method. Density flow conveying 2 is directed in an arc in the vertical downpipe. In front of the vertically aligned burner neck 12, an auxiliary gas 11 or a part of the moderation gas 6, for example CO 2 , is fed into the gas introduction device 10 in order to reduce the delivery density and the fuel flow.

Claims

Patentansprüche : Claims:
1. Verfahren zur Vergleichmäßigung und Regelung der mit Dichtstromförderung pneumatisch geförderten festen Brennstoffe in einen Vergaser zur Erzeugung von Synthesegas, dadurch gekennzeichnet, dass der feinkörnige bis staubförmige Brennstoff aus einem unterhalb der Brennerebene positionierten Vorlagebehälter zunächst auf ein Niveau oberhalb der Brennerebene gefördert und nachfolgend in einer abwärts zum Brenner gerichteten Leitung homogenisiert wird.1. A method for equalization and control of pneumatically funded with dense phase promotion solid fuels in a gasifier for the production of synthesis gas, characterized in that the fine-grained to dust-like fuel from a positioned below the burner level storage tank initially promoted to a level above the burner level and subsequently in a down to the burner directed line is homogenized.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die Homogenisierung in einer abwärts gerichteten Leitung erfolgt, deren Länge wenigstens dem fünffachen Leitungsdurchmesser entspricht.2. The method according to claim 1, characterized in that the homogenization takes place in a downwardly directed line whose length corresponds to at least five times the diameter of the pipe.
3. Verfahren nach Anspruch 1 oder 2 , dadurch gekennzeichnet, dass der Brennstoff in einer aus einem Krümmer geführten Fallleitung homogenisiert wird, wobei die Fallleitung in Winkeln < 20° vorzugsweise in 0° zur Vertikalen ausgerichtet ist.3. The method according to claim 1 or 2, characterized in that the fuel is homogenized in a guided from a manifold downpipe, wherein the downpipe at angles <20 ° is preferably aligned at 0 ° to the vertical.
4. Verfahren nach Anspruch 1 , 2 oder 3 , dadurch gekennzeichnet, dass zur Regelung des Brennstoffdurchsatzes dem Brennstoff- ström Gas zugeführt wird, wobei die Vermischung kurz vorher oder im Brenner vorgenommen wird.4. The method of claim 1, 2 or 3, characterized in that for controlling the fuel flow to the fuel Ström gas is supplied, wherein the mixing is made shortly before or in the burner.
5. Verfahren nach Anspruch 1 oder einem der folgenden, dadurch gekennzeichnet, dass insbesondere zur Temperaturregelung im Vergaser we- nigstens ein Teil des darin eingesetzten Gases (Moderationsgas) in den geförderten Brennstoff eingeleitet wird.5. The method according to claim 1 or one of the following, characterized in that in particular for controlling the temperature in the carburetor at least part of the gas (moderation gas) used therein is introduced into the conveyed fuel.
6. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass zusätzlich Gas, wie Stickstoff, Kohlendioxid, Dampf, andere Inertgase oder Mischungen daraus eingesetzt wird.6. The method according to any one of the preceding claims, characterized in that additionally gas, such as nitrogen, carbon dioxide, steam, other inert gases or mixtures thereof is used.
7. Verfahren nach Anspruch 6 , dadurch gekennzeichnet, dass über einen Rohrstutzen in unmittelbarer Brennernähe das zusätzliche Gas eingeleitet wird.7. The method according to claim 6, characterized in that via a pipe socket in the immediate vicinity of the burner, the additional gas is introduced.
8. Anlage zur Vergleichmäßigung und Regelung der mit Dicht- Stromförderung pneumatisch geförderten festen Brennstoffe in einen Vergaser (3) zur Erzeugung von Synthesegas, insbesondere zur Durchführung des Verfahrens nach einem der vorangehenden Ansprüche, gekennzeichnet durch8. Plant for equalization and control of the dense-current promotion pneumatically funded solid fuels in a gasifier (3) for the production of synthesis gas, in particular for carrying out the method according to one of the preceding claims, characterized by
Dichtstromförderleitungen (2, 2a, 2b) aus einem Vorlagebehälter (1) zu den Brennern (4,4a, 4b) des Vergasers (3), wobei der Endbereich der DichtStromförderleitung (2) vor dem jeweiligen Brenner (4) senkrecht positioniert ist.Dense flow conveying lines (2, 2a, 2b) from a feed tank (1) to the burners (4,4a, 4b) of the carburetor (3), wherein the end portion of the sealing current feed line (2) is positioned vertically in front of the respective burner (4).
9. Anlage nach Anspruch 8 , dadurch gekennzeichnet, dass die Länge des senkrechten Dichtstromleitungsabschnit- tes wenigstens dem fünffachen des Dichtstromleitungsdurch- messers entspricht. 9. Installation according to claim 8, characterized in that the length of the vertical Dichtstromleitungsabschnit- tes at least five times the Dichtstromleitungsdurchmessers corresponds.
PCT/EP2009/008268 2008-12-17 2009-11-20 Method and system for homogenizing the delivery of fuels in a gasifier for generating syngas WO2010075911A1 (en)

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CA2747298A CA2747298A1 (en) 2008-12-17 2009-11-20 Method and system for uniformization of the delivery of fuels into a gasifier for the production of synthesis gas
UAA201108856A UA103213C2 (en) 2008-12-17 2009-11-20 Method and system for homogenizing the delivery of fuels in a gasifier for generating syngas
RU2011129566/06A RU2011129566A (en) 2008-12-17 2009-11-20 METHOD AND INSTALLATION FOR AVERAGING TRANSPORTATION OF FUEL TYPES TO A GAS GENERATOR FOR THE PRODUCTION OF SYNTHESIS GAS
EP09760745A EP2359060A1 (en) 2008-12-17 2009-11-20 Method and system for homogenizing the delivery of fuels in a gasifier for generating syngas
CN2009801504582A CN102257322A (en) 2008-12-17 2009-11-20 Method and system for homogenizing the delivery of fuels in a gasifier for generating syngas
US12/998,918 US20110277673A1 (en) 2008-12-17 2009-11-20 Method and system for homogenizing the delivery of fuels in a gasifier for generating syngas
AP2011005727A AP2011005727A0 (en) 2008-12-17 2009-11-20 Method and system for uniformization of the delivery of fuels into a gasifier for the production of synthesis gas.
AU2009335360A AU2009335360A1 (en) 2008-12-17 2009-11-20 Method and system for homogenizing the delivery of fuels in a gasifier for generating syngas
BRPI0923040A BRPI0923040A2 (en) 2008-12-17 2009-11-20 process and installation for the homogenization of fuel transport in a gasification device for the generation of synthesis gas
ZA2011/05161A ZA201105161B (en) 2008-12-17 2011-07-13 Method and system for homogenizing the delivery of fuels in a gasifier for generating syngas

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DE102008063505.7 2008-12-17

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DE102008063505A1 (en) 2010-07-01
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CU20110125A7 (en) 2012-06-21
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KR20110094308A (en) 2011-08-23
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WO2010075911A4 (en) 2010-08-26
TW201030138A (en) 2010-08-16

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