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DE102004030368A1 - Continuous operation of direct current fixed bed gasifier for burning solid fuel comprises jacketed heat exchanger for producing fuel gas by utilizing part of heat contained in fuel gas - Google Patents

Continuous operation of direct current fixed bed gasifier for burning solid fuel comprises jacketed heat exchanger for producing fuel gas by utilizing part of heat contained in fuel gas Download PDF

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Publication number
DE102004030368A1
DE102004030368A1 DE200410030368 DE102004030368A DE102004030368A1 DE 102004030368 A1 DE102004030368 A1 DE 102004030368A1 DE 200410030368 DE200410030368 DE 200410030368 DE 102004030368 A DE102004030368 A DE 102004030368A DE 102004030368 A1 DE102004030368 A1 DE 102004030368A1
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Prior art keywords
fuel gas
fuel
bed gasifier
heat exchanger
solid fuel
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DE200410030368
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German (de)
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Hans Walter Kirchner
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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
    • C10J3/58—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels combined with pre-distillation of the fuel
    • C10J3/60—Processes
    • C10J3/64—Processes with decomposition of the distillation products
    • C10J3/66—Processes with decomposition of the distillation products by introducing them into the gasification zone
    • 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
    • C10J3/02—Fixed-bed gasification of lump fuel
    • C10J3/06—Continuous processes
    • C10J3/10—Continuous processes using external heating
    • 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
    • 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
    • C10J2200/158—Screws
    • 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
    • C10J2300/0913—Carbonaceous raw material
    • C10J2300/0916—Biomass
    • C10J2300/092—Wood, cellulose
    • 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
    • C10J2300/0956—Air or oxygen enriched air
    • 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
    • C10J2300/1861—Heat exchange between at least two process streams
    • 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
    • C10J2300/1861—Heat exchange between at least two process streams
    • C10J2300/1884—Heat exchange between at least two process streams with one stream being synthesis gas
    • 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
    • C10J2300/1861—Heat exchange between at least two process streams
    • C10J2300/1892—Heat exchange between at least two process streams with one stream being water/steam

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

The continuous operation of a direct current fixed bed gasifier comprises the use of a jacketed heat exchanger for producing a fuel gas by utilizing a part of the heat containing in fuel gas for vaporizing the water amount contained in the solid fuel.

Description

Bei Vergasung fester Brennstoffe ist vor der eigentlichen Vergasung der festen Brennstoffe, welche innerhalb von 700°C bis 1200°C erfolgt, zunächst eine Erwärmung des Brennstoffs erforderlich. Dabei werden zwei Teilschritte durchlaufen und zwar zunächst die Trocknung der Festbrennstoffe, die bei etwa 170°C abgeschlossen ist und danach die Pyrolyse, die zwischen 400°C bis 600°C erfolgt. Die Trocknung ist vollständig endotherm, und auch der Vergasungsprozess, der sich aus endothermen und exothermen Reaktionen zusammensetzt, ist in der Summe endotherm. Lediglich der Vorgang der Pyrolyse ist im diesbezüglich neutral bis schwach exotherm. Für den Gesamtprozess der Vergasung ist daher Wärme zuzuführen, die typischerweise aus der Teilverbrennung (unterstöchiometrische Verbrennung) des zu vergasenden Brennstoffes gewonnen wird.at Gasification of solid fuels is before the actual gasification the solid fuels, which takes place within 700 ° C to 1200 ° C, first a warming of the fuel required. There are two sub-steps and first the drying of solid fuels, which concluded at about 170 ° C and then the pyrolysis, which takes place between 400 ° C to 600 ° C. The drying is Completely endothermic, and also the gasification process resulting from endothermic and exothermic reactions is in the end endothermic. Only the process of pyrolysis is neutral in this regard until slightly exothermic. For The total process of gasification therefore needs to be supplied with heat that is typically off Partial combustion (substoichiometric Combustion) of the fuel to be gasified is obtained.

Um diese Teilverbrennung zu optimieren bietet es sich an, die in den heißen Brenngasen bei 700° bis 1.200°C enthaltene Wärme für die ersten Teilschritte Trocknung und Pyrolyse zu nutzen. Dies geschieht häufig in den so genannten Gegenstromvergasern. Bei der Gegenstromvergasung wird das erzeugte heiße Brenngas über den in der Trocknungs- und Pyrolysephase befindlichen Brennstoff geführt. Das Verfahren hat den erheblichen Nachteil, dass Teerverbindungen, welche in der Pyrolysezone entstehen, in hohen Konzentrationen von etwa 10–100 g/Nm3 das Brenngas belasten. Um z. B. eine motorische Nutzung des Brenngases zu ermöglichen, die einen geringen Teergehalt von < 50 mg/Nm3 voraussetzt, ist bei Gegenstromvergasung eine aufwendige Nachbehandlung des Brenngases erforderlich. Hingegen ist bekannt, dass im Gleichstromvergaser durch eine geeignete Zuführung des Vergasungsmittels eine Verbrennung der Schwelprodukte (Pyrolyseprodukte) erzielt werden kann, so dass auch bei Einsatz von Biomasse als Festbrennstoff die bei der weiteren Verwertung der Brenngase störenden Teerdämpfe auf weniger als 0,1 % des Brennstoffeinsatzes verringert werden können. (Prof. Dr. H. Selzer „Unterschied der Biomassevergasung zur Kohlevergasung" Dokumentation der ZIRP – Fachtagung Holzvergasung, 13. Februar 1997 Bingen). Dies entspricht einem Teergehalt im Rohgas von unter 500 mg/Nm3. Nachteilig beim Gleichstromvergaser ist, dass er konventionell, das heißt ohne Wärmerückgewinnung, einen höheren Anteil des Brennstoffs für die Vergasung verbraucht, durch den höheren Anteil an Verbrennungsprodukten und den höheren Anteil an Stickstoff, der mit der größeren Verbrennungsluftmenge eingetragen wird, das Brenngas stärker verdünnt ist und einen niedrigeren Heizwert hat.In order to optimize this partial combustion, it makes sense to use the heat contained in the hot combustion gases at 700 ° to 1200 ° C for the first stages of drying and pyrolysis. This often happens in the so-called countercurrent gasifiers. In countercurrent gasification, the generated hot fuel gas is passed over the fuel in the drying and pyrolysis phase. The process has the considerable disadvantage that tar compounds, which are formed in the pyrolysis zone, pollute the fuel gas in high concentrations of about 10-100 g / Nm 3 . To z. B. a motorized use of the fuel gas, which requires a low tar content of <50 mg / Nm 3 , a counter-treatment of the fuel gas is required at countercurrent gasification. On the other hand, it is known that combustion of the carbonization products (pyrolysis products) can be achieved in the direct current gasifier by suitable supply of the gasification agent, so that even when biomass is used as solid fuel, the tar vapors interfering with the further utilization of the fuel gases amount to less than 0.1% of the Fuel consumption can be reduced. (Prof. Dr. H. Selzer "Difference in biomass gasification for coal gasification" Documentation of the ZIRP conference "Wood gasification", February 13, 1997 Bingen) .This corresponds to a tar content in the raw gas of less than 500 mg / Nm 3. A disadvantage of the direct current gasifier is that it conventionally, that is, without heat recovery, consumes a higher proportion of the fuel for gasification, by the higher proportion of combustion products and the higher proportion of nitrogen, which is registered with the larger amount of combustion air, the fuel gas is more diluted and has a lower calorific value.

Dieser Nachteil der Gleichstromvergasung wird durch den im Patentanspruch 1 aufgeführten Einsatz des vorgeschalteten Mantelrohrwärmetauschers gelöst.This Disadvantage of DC gasification is by the in claim 1 listed use of the upstream jacket heat exchanger solved.

Die mit der Erfindung erreichten Vorteile bestehen darin, dass die benötigte Wärme für die Verdampfung des im Brennstoff enthaltenen Wassers, die Erwärmung des Brennstoffs und die Pyrolyse aus der bislang bei der Gleichstromvergasung nicht genutzten Wärme des Brenngases gewonnen wird. Gegenüber der Vergasung ohne Wärmerückgewinnung wird ein erheblich kleinerer Teil des Brennstoffes für die Teilverbrennung zur Zufuhr der erforderlichen Wärme benötigt.The achieved with the invention advantages are that the heat needed for evaporation of the water contained in the fuel, the heating of the fuel and the Pyrolysis from the previously unused in DC gasification Heat of the Fuel gas is recovered. Across from the gasification without heat recovery is a significantly smaller part of the fuel for the partial combustion to the supply the required heat needed.

Die geringere Teilverbrennung hat neben dem geringeren Energieverbrauch als zweite positive Auswirkung zur Folge, dass durch die geringere Zufuhr an Verbrennungsluft die Verdünnung des Brenngases durch Stickstoff – N2 ist zu 78 % in der Verbrennungsluft enthalten – reduziert wird.The lower partial combustion has in addition to the lower energy consumption as a second positive effect that is reduced by the lower supply of combustion air, the dilution of the fuel gas by nitrogen - N 2 is 78% in the combustion air.

Eine vorteilhafte Ausgestaltung der Erfindung ist in Patentanspruch 2 angegeben. Als Festbettvergaser wird eine Unterschubfeuerung eingesetzt, die in der Art der Brennstoffzufuhr der bekannten Bauart im Bereich der Holzhackschnitzel- bzw. Pelletfeuerung entspricht. Im Gegensatz zur Verbrennung in einer Kesselanlage arbeitet der Gleichstromfestbettvergaser in unterstöchiometrischem Betrieb, das heißt es wird immer nur eine so große Teilmenge des Brennstoffs verbrannt, wie es der erforderlichen Wärmezufuhr zum Erreichen der Vergasungstemperatur des Festbrennstoffs entspricht.A advantageous embodiment of the invention is in claim 2 specified. As fixed-bed gasifier, a underfeed firing is used, in the type of fuel supply of the known type in the area the Holzhackschnitzel- or Pelletfeuerung corresponds. In contrast For combustion in a boiler plant, the DC fixed bed gasifier works in substoichiometric Operation, that is it will always be just that big Subset of the fuel burned, as is the required heat input to reach the gasification temperature of the solid fuel corresponds.

Die Größe der verbrannten Teilmenge wird durch stufenlose Regelung der zugeführten Verbrennungsluft dem jeweiligen Bedarf angepasst. Die Zufuhr des Festbrennstoffs erfolgt mittels einer Transportschnecke, die auf dem Weg von der Brennstoffzuführung zum Festbettvergaser einen Mantelrohrwärmetauscher durchläuft.The Size of the burned Subset is through stepless control of the supplied combustion air adapted to the respective needs. The supply of solid fuel takes place by means of a transport screw on the way from the fuel supply to the fixed bed gasifier passes through a jacket tube heat exchanger.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im Folgenden näher beschrieben:One embodiment The invention is illustrated in the drawings and will be described in more detail below:

Zeichnung: Schema des Festbettvergasers mit MantelrohrwärmetauscherDrawing: Scheme of Fixed bed gasifier with jacket tube heat exchanger

Die Zufuhr des Brennstoffs zum Reaktor (in Form von Holzhackschnitzeln) wird wie in 1 dargestellt über eine mehrere Meter lange Schnecke realisiert. Im Bereich vor dem Reaktor wird die Ummantelung der Brennstoffschnecke von einem zusätzlichen Mantelrohr umgeben, durch welches sich das im Reaktor erzeugte Brenngas im Gegenstrom bewegt. Während die Holzhackschnitzel mit einer Temperatur von etwa 30°C der Brennstoffschnecke zugeführt werden, erreicht das Brenngas am Eintritt des Mantelrohrwärmetauschers Temperaturen von 700°C bis 1200°C. Der dadurch auftretende hohe Temperaturgradient bewirkt einen Wärmeübergang zum Brennstoff, so dass dieser auf Temperaturen von 200°C bis 400°C aufgeheizt wird. Damit wird Trocknung und Pyrolyse des Brennstoffs in der Schnecke ermöglicht. Der Gasstrom wird nach dem Wärmetauscher zur Weiterverarbeitung gekühlt. Der nun koksartige Brennstoff erreicht den Vergaser mit Hilfe der Brennstoffschnecke. Da der Reaktor mit geregeltem Unterdruck (50 bis 100 mbar gegen Normaldruck) gefahren wird, ist eine geregelte Reaktorzufuhr der während der Pyrolyse im Schneckenrohr entgasten Bestandteile möglich.The supply of the fuel to the reactor (in the form of woodchips) is as in 1 shown realized over a several meters long screw. In the area in front of the reactor, the jacket of the fuel screw is surrounded by an additional jacket tube, through which the fuel gas generated in the reactor in countercurrent emotional. While the wood chips are supplied to the fuel screw at a temperature of about 30 ° C, the fuel gas reaches temperatures of 700 ° C to 1200 ° C at the inlet of the jacket tube heat exchanger. The resulting high temperature gradient causes a heat transfer to the fuel, so that it is heated to temperatures of 200 ° C to 400 ° C. This allows drying and pyrolysis of the fuel in the screw. The gas stream is cooled after the heat exchanger for further processing. The now coke-like fuel reaches the carburetor with the help of the fuel screw. Since the reactor is operated with regulated negative pressure (50 to 100 mbar against atmospheric pressure), a controlled reactor feed of the degassed components during pyrolysis in the screw tube is possible.

Claims (2)

Kontinuierlich arbeitender Gleichstrom-Festbettvergaser für Festbrennstoffe, insbesondere aus Holz, mit vorgeschaltetem Mantelrohrwärmetauscher zur Erzeugung eines Brenngases, dadurch gekennzeichnet dass dem Festbettvergaser für Festbrennstoffe ein Mantelrohrwärmetauscher vorgeschaltet wird, der einen Teil der in dem heißen Brenngas enthaltenen Enthalpie (Wärme) zur Verdampfung des im Festbrennstoff enthaltenen Wasseranteils und zur Pyrolyse nutzt.A continuous direct current fixed bed gasifier for solid fuel, in particular of wood, with an upstream jacket tube heat exchanger for producing a fuel gas, characterized in that the fixed-bed gasifier for solid fuel a jacket tube heat exchanger is connected upstream of a portion of the enthalpy contained in the hot combustion gas (heat) for the evaporation of the solid fuel contained water content and used for pyrolysis. Festbettvergaser nach Patentanspruch 1 dadurch gekennzeichnet, dass als Festbettvergaser ein Unterschubreaktor eingesetzt wird, in den die Zufuhr des Festbrennstoffs mittels einer Transportschnecke erfolgt, die auf dem Weg von der Brennstoffzuführung zum Festbettvergaser einen Mantelrohrwärmetauscher durchläuft. Die Vergasungstemperatur im Reaktor wir dabei durch stufenlose Regelung der Verbrennungsluftzufuhr konstant gehalten wird.Fixed bed gasifier according to claim 1, characterized that a bottom-loading reactor is used as fixed-bed gasifier, in which the supply of solid fuel by means of a screw conveyor, the on the way from the fuel supply to the fixed-bed gasifier a jacket tube heat exchanger passes. The gasification temperature in the reactor is thereby controlled continuously the combustion air supply is kept constant.
DE200410030368 2004-06-23 2004-06-23 Continuous operation of direct current fixed bed gasifier for burning solid fuel comprises jacketed heat exchanger for producing fuel gas by utilizing part of heat contained in fuel gas Ceased DE102004030368A1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009008076A1 (en) 2009-02-10 2010-08-12 Sww Wunsiedel Gmbh Direct current-fixed bed gasifier for use in power generation arrangement for producing fuel gas from e.g. wood chips, has bottom shear reactor whose shaft is supplied with solid fuel, and hot gas filter arranged in closed housings
DE102010018197A1 (en) * 2010-04-26 2011-10-27 Stadtwerke Rosenheim Gmbh & Co. Kg Process and apparatus for the gasification of biomass
WO2012010742A2 (en) 2010-07-22 2012-01-26 Fortel Components Oy A method and a device for cooling wood gases
DE102006059485B4 (en) * 2005-12-15 2012-05-10 Franz Eder Wood gasifier, method for carrying out a wood gasification and plant
US8475552B2 (en) 2010-09-15 2013-07-02 General Electric Company System for pressurizing feedstock for fixed bed reactor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3239428A1 (en) * 1982-05-28 1984-05-03 Eisenmann KG Maschinenbau-Gesellschaft mbH & Co, 7030 Böblingen Process and plant for obtaining generator gas from predominantly prepared nonfossil waste products
DE3509263A1 (en) * 1985-03-12 1986-10-16 Silica Gel GmbH Adsorptions-Technik, Apparatebau, 1000 Berlin Process and device for controlling the fuel supply to an underfeed gasifier
DE19614689A1 (en) * 1996-04-13 1997-10-16 Bauknecht Maximillian Novel heating unit used in e.g. solids drying, gasification and effluent treatment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3239428A1 (en) * 1982-05-28 1984-05-03 Eisenmann KG Maschinenbau-Gesellschaft mbH & Co, 7030 Böblingen Process and plant for obtaining generator gas from predominantly prepared nonfossil waste products
DE3509263A1 (en) * 1985-03-12 1986-10-16 Silica Gel GmbH Adsorptions-Technik, Apparatebau, 1000 Berlin Process and device for controlling the fuel supply to an underfeed gasifier
DE19614689A1 (en) * 1996-04-13 1997-10-16 Bauknecht Maximillian Novel heating unit used in e.g. solids drying, gasification and effluent treatment

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006059485B4 (en) * 2005-12-15 2012-05-10 Franz Eder Wood gasifier, method for carrying out a wood gasification and plant
DE102009008076A1 (en) 2009-02-10 2010-08-12 Sww Wunsiedel Gmbh Direct current-fixed bed gasifier for use in power generation arrangement for producing fuel gas from e.g. wood chips, has bottom shear reactor whose shaft is supplied with solid fuel, and hot gas filter arranged in closed housings
DE102010018197A1 (en) * 2010-04-26 2011-10-27 Stadtwerke Rosenheim Gmbh & Co. Kg Process and apparatus for the gasification of biomass
WO2011134961A3 (en) * 2010-04-26 2012-03-01 Stadtwerke Rosenheim Gmbh & Co. Kg Method and device for gasifying biomass
WO2012010742A2 (en) 2010-07-22 2012-01-26 Fortel Components Oy A method and a device for cooling wood gases
WO2012010742A3 (en) * 2010-07-22 2013-01-24 Fortel Components Oy A method and a device for cooling wood gases
US8475552B2 (en) 2010-09-15 2013-07-02 General Electric Company System for pressurizing feedstock for fixed bed reactor

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