DE102007050895A1 - Off-stream gasification of biomass as a slurry - Google Patents

Off-stream gasification of biomass as a slurry Download PDF

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Publication number
DE102007050895A1
DE102007050895A1 DE102007050895A DE102007050895A DE102007050895A1 DE 102007050895 A1 DE102007050895 A1 DE 102007050895A1 DE 102007050895 A DE102007050895 A DE 102007050895A DE 102007050895 A DE102007050895 A DE 102007050895A DE 102007050895 A1 DE102007050895 A1 DE 102007050895A1
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Prior art keywords
biomass
liquid
gasification
slurry
entrained flow
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DE102007050895A
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German (de)
Inventor
Frank Hannemann
Thomas Dr. Metz
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Siemens AG
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Siemens AG
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Priority to DE102007050895A priority Critical patent/DE102007050895A1/en
Priority to US12/739,242 priority patent/US20110041405A1/en
Priority to PCT/EP2008/062794 priority patent/WO2009053203A1/en
Publication of DE102007050895A1 publication Critical patent/DE102007050895A1/en
Withdrawn legal-status Critical Current

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    • 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
    • C10J3/485—Entrained flow gasifiers
    • 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
    • C10J3/506—Fuel charging devices for entrained flow gasifiers
    • 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
    • C10L9/00—Treating solid fuels to improve their combustion
    • C10L9/08—Treating solid fuels to improve their combustion by heat treatments, e.g. calcining
    • C10L9/083—Torrefaction
    • 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
    • C10J2200/00—Details of gasification apparatus
    • C10J2200/09—Mechanical details of gasifiers not otherwise provided for, e.g. sealing means
    • 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
    • C10J2200/00—Details of gasification apparatus
    • C10J2200/15—Details of feeding means
    • C10J2200/152—Nozzles or lances for introducing gas, liquids or suspensions
    • 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
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0903—Feed preparation
    • 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
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0913—Carbonaceous raw material
    • C10J2300/0916—Biomass
    • 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
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0953—Gasifying agents
    • C10J2300/0959—Oxygen
    • 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
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0953—Gasifying agents
    • C10J2300/0973—Water
    • 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
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0983—Additives
    • C10J2300/0989—Hydrocarbons as additives to gasifying agents to improve caloric properties
    • 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
    • C10J2300/00—Details of gasification processes
    • C10J2300/16—Integration of gasification processes with another plant or parts within the plant
    • 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
    • C10J2300/00—Details of gasification processes
    • C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
    • C10J2300/1807—Recycle loops, e.g. gas, solids, heating medium, water
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/10—Biofuels, e.g. bio-diesel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

Es wird ein Verfahren zur Flugstromvergasung von Biomasse vorgeschlagen, bei dem reine Biomasse zuerst gedörrt und dann gemahlen wird und sodann die gedörrte und gemahlene Biomasse mit einer Flüssigkeit als Slurry dem Vergasungsprozeß zugeführt wird. Durch die Kombination von Dörrung, Mahlen (Torrefaction) und Mischung mit einer Flüssigkeit - vorteilhafterweise Restprodukte aus nachgeschalteten Syntheseprozessen, aber auch anderen verfügbaren flüssigen Stoffen, - ist eine energetisch günstige Umsetzung gegeben.A method for entrained-flow gasification of biomass is proposed in which pure biomass is first dried and then ground, and then the dried and ground biomass is fed with a liquid as a slurry to the gasification process. The combination of dehydration, grinding (Torrefaction) and mixing with a liquid - advantageously residual products from downstream synthesis processes, but also other available liquid substances - is given an energetically favorable implementation.

Description

Der Anmeldungsgegenstand betrifft ein Verfahren zur Flugstromvergasung von Biomasse.Of the The subject of the application relates to a method for entrained flow gasification of biomass.

Die Einspeisung von (fester) Biomasse wie Holz, Stroh, Schilfgras, etc. in einen Flugstromvergaser ist nach dem Dichtstromförderverfahren aufgrund des hohen Trägergasstromes energetisch ungünstig und macht ein solches Verfahren in der Regel unwirtschaftlich.The Infeed of (solid) biomass such as wood, straw, reed, etc. in an entrained flow gasifier is after the dense phase conveying process due to the high carrier gas flow energetically unfavorable and makes such a procedure usually uneconomical.

Bisher gibt es keine Anwendungsfälle, bei welchen ausschließlich Biomasse in fester Form im Flugstromvergaser vergast wird. Lediglich Beimischung zu Kohle ist bekannt.So far there are no use cases, in which exclusively Biomass is gasified in solid form in Flugstromvergaser. Only Admixture to coal is known.

Der Erfindung liegt das Problem zugrunde, ein Verfahren zur Flugstromvergasung von fester Biomasse anzugeben, das im Hinblick auf das Dichtstromförderverfahren energetisch günstiger ist.Of the The invention is based on the problem, a method for entrained flow gasification of solid biomass, with regard to the dense phase conveying process energetically cheaper is.

Das Problem wird durch die Merkmale des Anspruchs 1 gelöst.The Problem is solved by the features of claim 1.

Bei dem erfindungsgemäßen Verfahren wird zunächst Biomasse gedörrt (englisch: Torrefaction), anschließend mit relativ geringem Energieaufwand zu kleinen Partikeln gemahlen, dann mit einer Flüssigkeit vermischt und in den Flugstromvergaser gepumpt. Insbesondere bietet es sich bei Verfahren zur Erzeugung von synthetischen Kraftstoffen an, einen Teil des erzeugten Kraftstoffes oder anfallender, flüssiger Reststoffe wie z. B. Paraffine zu verwenden. Jedoch auch sonstige flüssige verfügbare Medien wie Wasser, Öle, Glycerin, Methanol, flüssiges CO2, etc. sind möglich. Durch das erfindungsgemäße Verfahren, das mit Torry Slurry Feed bezeichnet werden mag, wird die Flugstromvergasung von reiner Biomasse energetisch günstig ermöglicht.at the method according to the invention will be first Biomass dried (English: Torrefaction), then with relatively little energy consumption too Milled small particles, then mixed with a liquid and in the Air flow gasifier pumped. In particular, it offers in process for the production of synthetic fuels, part of the produced fuel or accumulating, liquid residues such. B. To use paraffins. However, other liquid media available, such as water, oils, glycerin, Methanol, liquid CO2, etc. are possible. By the method according to the invention, which may be referred to as Torry Slurry Feed, is the air flow gasification of pure biomass energetically favorable.

Durch die Kombination von Dörrung, Mahlung (Torrefaction) und Mischung mit einer Flüssigkeit – idealer weise Restprodukte aus nachgeschalteten Syntheseprozessen, aber auch anderen verfügbaren flüssigen Stoffen – kann auch der Biomasse-Sektor für die Flugstromvergasung erschlossen werden, was bisher nicht oder nur in Kombination mit primär fossil gefeuerten Anlagen möglich war.By the combination of dehydration, Grinding (Torrefaction) and mixing with a liquid - ideally as residual products from downstream synthesis processes, but also other available liquid substances - can also the biomass sector for the entrainment gasification will be tapped, which has not been or only in combination with primary fossil fired plants possible was.

Vorteilhafte Weiterbildungen des Anmeldungsgegenstandes sind in den Unteransprüchen angegeben.advantageous Further developments of the subject of the application are specified in the subclaims.

Der Anmeldungsgegenstand wird im Folgenden als Ausführungsbeispiel in einem zum Verständnis erforderlichen Umfang anhand einer Figur näher erläutert. Dabei zeigt:Of the The subject of the application is hereinafter referred to as an exemplary embodiment in a to understanding required extent explained in more detail with reference to a figure. Showing:

1 eine prinzipielle Darstellung einer das erfindungsgemäße Verfahren realisierenden Einrichtung. 1 a schematic representation of a method according to the invention realizing device.

In einer ersten Stufe 1, die mit Biomass-Torrefaction bezeichnet sein mag, wird Biomasse 1.1, wie z. B. Holz, Stroh oder Schilfgras in einer Dörreinrichtung 1.2 gedörrt. Die gedörrte Biomasse wird einer Mühle 1.3 zugeführt, wo sie zu Partikeln gemahlen wird, die für die nachfolgende Slurry-Erzeugung geeignet sind. Die Partikel werden einer Mischeinrichtung 1.4 über einen ersten Zugang zugeführt, der über einen zweiten Zugang ein flüssiges Medium wie Wasser, Öle, Schweröl, Bioöl, Glycerin, Methanol, flüssiges CO2, Paraffin, Teer zugeführt wird. In der Mischeinrichtung wird die Biomasse mit dem flüssigen Medium zu einem Slurry gemischt.In a first stage 1 that may be termed biomass torrefaction becomes biomass 1.1 , such as As wood, straw or reed grass in a Döringreinrichtung 1.2 parched. The dried biomass becomes a mill 1.3 where it is ground to particles suitable for subsequent slurry production. The particles become a mixing device 1.4 supplied via a first access, which is supplied via a second access to a liquid medium such as water, oils, heavy oil, bio-oil, glycerol, methanol, liquid CO2, paraffin, tar. In the mixing device, the biomass is mixed with the liquid medium to form a slurry.

Das Slurry wird einer zweiten Stufe 2, die mit Gasification bezeichnet sein mag, zugeführt, wo sie mittels einer Slurry-Pumpe 2.1 einem Flugstrom-Vergasungsreaktor 2.2 zusammen mit einem freien Sauerstoff enthaltenden Oxidationsmittel O2 zugeführt wird. In dem Flugstrom-Vergasungsreaktor erfolgt in einer Flammenreaktion unter hohem Druck von bis zu 8 MPa und Temperaturen bis 1800 Grad Celsius eine Partialoxidation des zugeführten Slurry zu Rohgas 2.3, wobei das anfallende Ab fallprodukt 2.4 nach unten abgeführt wird. Das Rohgas wird in einer Rohgas-Reinigungseinrichtung 2.5 gereinigt.The slurry becomes a second stage 2 , which may be referred to as gasification, fed to where they by means of a slurry pump 2.1 an entrainment gasification reactor 2.2 is supplied together with a free oxygen-containing oxidant O2. In the entrained flow gasification reactor, a partial oxidation of the supplied slurry to crude gas takes place in a flame reaction under high pressure of up to 8 MPa and temperatures up to 1800 degrees Celsius 2.3 , where the resulting waste product 2.4 is discharged down. The raw gas is in a crude gas purification device 2.5 cleaned.

Das gereinigte Rohgas wird einer dritten Stufe 3, die mit GasCleanUP/Synthesis bezeichnet sein mag, zugeführt, wo eine Synthese zu einem Produkt 4, wie z. B. Diesel, Benzin, Methanol, Dimethylether DME, Paraffin, Wasser, flüssiges CO2 oder Öl, erfolgt.The purified raw gas becomes a third stage 3 that may be termed GasCleanUP / Synthesis, where a synthesis becomes a product 4 , such as As diesel, gasoline, methanol, dimethyl ether DME, paraffin, water, liquid CO2 or oil occurs.

In einer besonderen Ausgestaltung der Erfindung wird über eine Rückführung 5 ein Bruchteil des Produkts 4 der Mischeinrichtung 1.4 als flüssiges Medium zugeführt.In a particular embodiment of the invention is via a return 5 a fraction of the product 4 the mixing device 1.4 supplied as a liquid medium.

In einer besonderen Ausgestaltung der Erfindung werden über eine Rückführung 5 Restprodukte aus nachgeschalteten Syntheseprozessen der Mischeinrichtung 1.4 als flüssiges Medium zugeführt.In a particular embodiment of the invention are via a return 5 Residual products from downstream synthesis processes of the mixing device 1.4 supplied as a liquid medium.

In einer besonderen Ausgestaltung der Erfindung wird der Mischeinrichtung 1.4 zu einem Teil ein Bruchteil des rückgeführten Produkts 4, beziehungsweise Restprodukts und zum verbleibenden Teil ein der Anordnung von Außen zugeführtes Medium als flüssiges Medium zugeführt; hierbei können das rückgeführte (Rest-)Produkt und das von Außen zugeführte Medium unterschiedlich sein, beispielsweise kann das rückgeführte (Rest-)Produkt durch Dimethylether und das von Außen zugeführte Medium durch Glycerin gegeben sein.In a particular embodiment of the invention, the mixing device 1.4 in part a fraction of the recycled product 4 or residual product and to the remaining part of the arrangement supplied from the outside medium supplied as a liquid medium; In this case, the recycled (residual) product and the externally supplied medium may be different, for example, the recycled (residual) product may be given by dimethyl ether and the externally supplied medium by glycerol.

Claims (7)

Verfahren zur Flugstromvergasung von Biomasse demzufolge die Biomasse gedörrt wird, die Biomasse gemahlen wird, die gedörrte und gemahlene Biomasse mit einer Flüssigkeit als Slurry dem Vergasungsprozeß zugeführt wird.Method for entrained flow gasification of biomass consequently the biomass is dried becomes, the biomass is ground, the parched and ground biomass with a liquid is fed as a slurry to the gasification process. Verfahren zur Flugstromvergasung nach Anspruch 1 dadurch gekennzeichnet, dass als Flüssigkeit ein Bruchteil des im Vergasungsprozeß erzeugten, rückgeführten synthetischen Produktes (4) eingesetzt wird.A method for entrained flow gasification according to claim 1, characterized in that as liquid a fraction of the produced in the gasification process, recycled synthetic product ( 4 ) is used. Verfahren zur Flugstromvergasung nach Anspruch 1 dadurch gekennzeichnet, dass als Flüssigkeit ein in dem Vergasungsprozeß nachfolgenden Syntheseprozeß erzeugtes, rückgeführtes Restprodukt eingesetzt wird.A method for entrainment gasification according to claim 1 characterized in that as the liquid a synthesis process following in the gasification process is produced, recycled residual product is used. Verfahren zur Flugstromvergasung nach Anspruch 2 oder 3 dadurch gekennzeichnet, dass als Flüssigkeit zu einem Teil das im Vergasungsprozeß erzeugte synthetische Produkt, beziehungsweise Restprodukt, und zum verbleibenden Teil ein von außen zugeführtes flüssiges Medium eingesetzt wird.A method for entrainment gasification according to claim 2 or 3, characterized in that as a liquid to a part of the produced in the gasification process synthetic product, or residual product, and the remaining Part one from the outside supplied liquid Medium is used. Verfahren zur Flugstromvergasung nach Anspruch 1 bis 4 dadurch gekennzeichnet, dass als Flüssigkeit Wasser, Öle, Paraffin, Glycerin, Methanol oder flüssiges CO2 eingesetzt wird.A method for entrainment gasification according to claim 1 to 4 characterized in that as liquid water, oils, paraffin, Glycerol, methanol or liquid CO2 is used. Verfahren zur Flugstromvergasung nach einem der vorstehenden Ansprüche dadurch gekennzeichnet, dass als Biomasse Holz, Rinde, Stroh, Schilfgras oder ein anderer nachwachsender Rohstoff eingesetzt wird.A method for entrained flow gasification according to one of the preceding claims characterized in that as biomass wood, bark, straw, reed grass or another renewable raw material is used. Verfahren zur Flugstromvergasung nach einem der vorstehenden Ansprüche dadurch gekennzeichnet, dass als Biomasse eine beliebige Mischung von Holz, Rinde, Stroh, Schilfgras und anderer nachwachsender Rohstoffe eingesetzt werden.A method for entrained flow gasification according to one of the preceding claims characterized in that as biomass any mixture of Wood, bark, straw, reeds and other renewable resources be used.
DE102007050895A 2007-10-24 2007-10-24 Off-stream gasification of biomass as a slurry Withdrawn DE102007050895A1 (en)

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DE102007050895A DE102007050895A1 (en) 2007-10-24 2007-10-24 Off-stream gasification of biomass as a slurry
US12/739,242 US20110041405A1 (en) 2007-10-24 2008-09-24 Entrained-flow gasification of biomass as slurry
PCT/EP2008/062794 WO2009053203A1 (en) 2007-10-24 2008-09-24 Entrained bed gasification of biomass as a slurry

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