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WO1999042540A1 - Method for the gasification of biomass-comprising material and installation therefor - Google Patents

Method for the gasification of biomass-comprising material and installation therefor Download PDF

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Publication number
WO1999042540A1
WO1999042540A1 PCT/NL1999/000089 NL9900089W WO9942540A1 WO 1999042540 A1 WO1999042540 A1 WO 1999042540A1 NL 9900089 W NL9900089 W NL 9900089W WO 9942540 A1 WO9942540 A1 WO 9942540A1
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WO
WIPO (PCT)
Prior art keywords
gasification
biomass
gas
opening
installation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/NL1999/000089
Other languages
French (fr)
Inventor
Hubertus Ernest Maria Stassen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Biomass Technology Group BV
Original Assignee
Biomass Technology Group BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Biomass Technology Group BV filed Critical Biomass Technology Group BV
Priority to AU32787/99A priority Critical patent/AU3278799A/en
Publication of WO1999042540A1 publication Critical patent/WO1999042540A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C10J3/02—Fixed-bed gasification of lump fuel
    • C10J3/20—Apparatus; Plants
    • 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
    • C10J3/04—Cyclic processes, e.g. alternate blast and run
    • 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
    • C10J3/72—Other features
    • C10J3/80—Other features with arrangements for preheating the blast or the water vapour
    • 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
    • C10J2300/0983—Additives
    • C10J2300/0986—Catalysts
    • 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
    • C10J2300/0993—Inert particles, e.g. as heat exchange medium in a fluidized or moving bed, heat carriers, sand
    • 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
    • C10J2300/1869—Heat exchange between at least two process streams with one stream being air, oxygen or ozone
    • 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

Definitions

  • the present invention relates to a method for the gasification of biomass-comprising material in the presence of an oxygen-comprising gas in a gasification installation, during which gasification a hot gasification pro- ducts-comprising gas is formed, which installation comprises a gasification chamber provided with an inlet opening for the supply of biomass, means for cooling the hot gasification products-comprising gas and for using the released heat to heat the oxygen-comprising gas before its introduction into the gasification chamber, for which purpose the installation is provided with a first opening and a second opening for the supply and discharge of gas, and oxygen-comprising gas is alternatingly supplied via a first opening, and gasification products-comprising gas is discharged via a second opening, and vice versa.
  • Such a method has been known in the field since the seventies as the Andco Torrax-process . More specifically, this method entails the introduction of the biomass-con- taining waste from the top into an elongated cylindrical and vertically positioned gasification chamber, the introduction at the bottom, of oxygen-comprising gas, in a direction opposite to the supply direction of biomass-comprising waste, and the discharge at the top of hot gasification products-comprising gas. A portion of this hot gas is alternatingly supplied to one of two regeneration towers to which it gives off heat. The other of the two regeneration towers is alternatingly supplied with air. The air moves through the regeneration tower in a direction opposite to that of the gasification products-compri- sing gas previously supplied through said regeneration tower. The bottom of the gasification chamber is provided with an opening ' for the discharge of liquid slag.
  • the object of the invention is to improve the known method and in particular to avoid the use of a costly, high temperature-resistant shuttle valve. It is a further 2 objective to provide a method allowing the biomass to be supplied at a point in the installation where the prevailing temperatures are relatively low.
  • the objective is attained by employing as installation a reverse-flow reactor comprising two packed beds between which there is a space serving as gasification chamber, the reverse-flow reactor being provided with the first and the second opening, and the line of direction in which the gas supply passes through the biomass cuts the line of direction in which the biomass is supplied.
  • a reverse-flow reactor is generally known in the field, for example from the American patent publication No. 2,700,600.
  • the direction of the gas movement prevents hot gas coming into the vicinity of the supply opening for biomass.
  • the efficient recovery of heat with the aid of a reverse-flow reactor renders high-temperature gasification attractive in terms of energy. Due to the high temperature, biomass with a relatively high water content is also pre-eminently suited for gasification, thereby lowering, or even avoiding, the costs for a drying step. Any tar products and soot particles formed and deposited in the packed bed will, due to the high temperature in the presence of oxygen from the oxygen-comprising gas, be combusted as soon as the gas flow is reversed again.
  • An important advantage of the method according to the invention over the method of the prior art is the more favourable composition of the decomposition products. For example, fewer tar-like products are formed, making it easier to utilize or refine the gasification products-comprising gas.
  • the biomass is pre-dried by the hot decomposition gasses and much water ends up in the hot gasses . With the present invention said drying occurs to a lesser extent, so that more water is present during pyrolysis, resulting in a relatively greater production of hydrogen.
  • the biomass is supplied at an angle of substantially 90°.
  • the biomass is supplied via a tapered inlet opening.
  • the invention relates to an installation for the gasification of biomass-comprising material, which installation comprises a reverse-flow reactor having a first chamber for a first packed bed and a second space for a second packed bed, between the first and the second chamber a gasification space is provided, the end of the first chamber opposite to the gasification chamber is provided with a first opening and the end of the second chamber opposite to the gasification space is provided with a second opening, the gasification space is provided with a third opening for the supply of biomass-comprising material, and the bottom of the gasification space is provided with a fourth opening for the discharge of slag, the walls of the chambers and the space being formed from fireproof concrete.
  • FIG. 1 The figure shows a reverse-flow reactor 1 comprising two packed beds 2,3 and a gasification chamber 4. At each end the reverse-flow reactor 1 is provided with openings 5,6 for the supply or discharge of gas, as will be explained below.
  • Biomass such as, for example, grass from 4 verges, elephant grass and wood chippings from willow and poplar are supplied via a tapered tube, reaching the gasification chamber via opening 8.
  • an oxygen-comprising gas such as air is supplied to opening 5.
  • the air is heated in the packed bed 2 and is introduced into the gasification chamber 4.
  • a small amount of oxygen is supplied, and the heat produced during the reaction of oxygen with biomass or its pyrolysis products, effectuates gasification of the biomass.
  • a hot gasification products-comprising stream is formed which is discharged via the packed bed 3.
  • the hot gasification products-comprising stream gives off heat to the bed material.
  • the gasification products-comprising gas is discharged through discharge pipe 12.
  • the gas may be utilized for all kinds of purposes, such as for synthesis purposes or for the generation of electricity.
  • the shuttle valves 10,11 are switched to a second position, reversing the flow direction through the reverse-flow reactor. This results in the packed bed 3 being cooled again and the packed bed 2 being heated. In this way the heat remains to a large extent inside the installation and the biomass can be gasified at high temperature in a man- ner favourable with respect to energy.
  • the oxygen supply to the biomass may temporarily be increased so that more biomass is incinerated and more heat develops.
  • a packed bed may first be heated electrically.
  • the packed beds may comprise, for example, alumina granules having a size of, say 5 mm. They may also comprise catalyst granules. These will then be located substantially in a zone in the packed bed where temperatures occur that are high enough to catalyze 5 the reaction, but not so high that the catalytic activity of the catalyst granules is destroyed.
  • the packed beds 2,3 have to be cooled (not shown) . This is done to advantage in a direction opposite to the heat gradient, so that, for example, hot steam may be obtained for the generation of electricity or for the production of processing heat. Instead of cooling, it is also possible to discharge a part of the hot gas from the gasification chamber 4, or optionally also from a hot part of the packed bed 2,3.
  • oxygen-comprising gas supplied to the reverse-flow reactor 1 is oxygen-enriched air or substantially pure oxygen. In this manner it is possible to obtain a gasification products-comprising gas of a higher caloric value.
  • the axis of the supply opening for biomass is substantially horizontal.
  • the liquid slag may, via a slag discharge opening 13 which in this case is embodied as overflow, be quenched in cold water. This effectively immobilizes harmful heavy metals that may be present .
  • fireproof concrete is a material that according to the invention in particular comes to mind.
  • Such an installation can be cast in accordance with known techniques, and comprises only a limited number of parts. As a consequence the number of joints is also limited.
  • the top of the installation could, for example, be a lid.
  • the resulting 6 gap between the lid and the installation underneath can simply, in a manner known in itself, be sealed, which sealing will be maintained even at fluctuations temperatures .
  • the installation is suitably insulated and may also be provided with insulation material on the outside.
  • the shaded part in the figure represents the insulation material.
  • a suitable insulation and sealing material is alumina-silica fibre-compris- ing insulation material.
  • tar-like products that may be present are gaseous. When they are passed through a bed 2 or 3, they may precipitate, which is undesirable.
  • oxygen for example in the form of air, is supplied to the gasification chamber 4 and this should preferably always be above the bed via which the gasification products-comprising gas is discharged. In this manner the deposition of tar-like products in the beds is prevented efficiently and economically.

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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)

Abstract

The present invention relates to a method for the gasification of biomass-comprising material such as biomass. According to the present invention, gasification takes place in a reverse-flow reactor in which the line of direction in which gas is passed through the biomass cuts the line of direction in which the biomass is supplied. Such a method makes it possible to efficiently gasify biomass, while the installation required is relatively inexpensive. The invention also relates to an installation for the gasification of biomass-comprising material, which installation is formed from fireproof concrete.

Description

Method for the gasification of biomass-comprising material and installation therefor
The present invention relates to a method for the gasification of biomass-comprising material in the presence of an oxygen-comprising gas in a gasification installation, during which gasification a hot gasification pro- ducts-comprising gas is formed, which installation comprises a gasification chamber provided with an inlet opening for the supply of biomass, means for cooling the hot gasification products-comprising gas and for using the released heat to heat the oxygen-comprising gas before its introduction into the gasification chamber, for which purpose the installation is provided with a first opening and a second opening for the supply and discharge of gas, and oxygen-comprising gas is alternatingly supplied via a first opening, and gasification products-comprising gas is discharged via a second opening, and vice versa.
Such a method has been known in the field since the seventies as the Andco Torrax-process . More specifically, this method entails the introduction of the biomass-con- taining waste from the top into an elongated cylindrical and vertically positioned gasification chamber, the introduction at the bottom, of oxygen-comprising gas, in a direction opposite to the supply direction of biomass-comprising waste, and the discharge at the top of hot gasification products-comprising gas. A portion of this hot gas is alternatingly supplied to one of two regeneration towers to which it gives off heat. The other of the two regeneration towers is alternatingly supplied with air. The air moves through the regeneration tower in a direction opposite to that of the gasification products-compri- sing gas previously supplied through said regeneration tower. The bottom of the gasification chamber is provided with an opening 'for the discharge of liquid slag.
The object of the invention is to improve the known method and in particular to avoid the use of a costly, high temperature-resistant shuttle valve. It is a further 2 objective to provide a method allowing the biomass to be supplied at a point in the installation where the prevailing temperatures are relatively low.
According to the present invention the objective is attained by employing as installation a reverse-flow reactor comprising two packed beds between which there is a space serving as gasification chamber, the reverse-flow reactor being provided with the first and the second opening, and the line of direction in which the gas supply passes through the biomass cuts the line of direction in which the biomass is supplied.
A reverse-flow reactor is generally known in the field, for example from the American patent publication No. 2,700,600. The direction of the gas movement prevents hot gas coming into the vicinity of the supply opening for biomass. The efficient recovery of heat with the aid of a reverse-flow reactor renders high-temperature gasification attractive in terms of energy. Due to the high temperature, biomass with a relatively high water content is also pre-eminently suited for gasification, thereby lowering, or even avoiding, the costs for a drying step. Any tar products and soot particles formed and deposited in the packed bed will, due to the high temperature in the presence of oxygen from the oxygen-comprising gas, be combusted as soon as the gas flow is reversed again. An important advantage of the method according to the invention over the method of the prior art is the more favourable composition of the decomposition products. For example, fewer tar-like products are formed, making it easier to utilize or refine the gasification products-comprising gas. Besides, with the prior art method, the biomass is pre-dried by the hot decomposition gasses and much water ends up in the hot gasses . With the present invention said drying occurs to a lesser extent, so that more water is present during pyrolysis, resulting in a relatively greater production of hydrogen.
According to a favourable embodiment the biomass is supplied at an angle of substantially 90°. 3
This provides a symmetrical distribution of biomass that has undergone partial pyrolysis in the gasification chamber, which is conducive for continuous operation of an installation at constant processing conditions. According to a further favourable embodiment, the biomass is supplied via a tapered inlet opening.
In this manner problems relating to the transport of biomass to the gasification chamber are largely avoided. Finally, the invention relates to an installation for the gasification of biomass-comprising material, which installation comprises a reverse-flow reactor having a first chamber for a first packed bed and a second space for a second packed bed, between the first and the second chamber a gasification space is provided, the end of the first chamber opposite to the gasification chamber is provided with a first opening and the end of the second chamber opposite to the gasification space is provided with a second opening, the gasification space is provided with a third opening for the supply of biomass-comprising material, and the bottom of the gasification space is provided with a fourth opening for the discharge of slag, the walls of the chambers and the space being formed from fireproof concrete. The construction of such an installation is relatively inexpensive and joints that could exhibit leakage resulting from temperature fluctuations, are largely avoided. All the connections of tubes to the first and second openings are relatively cold openings. The invention will now be explained with reference to the drawing, in which the only figure represents a cross-sectional view of an embodiment of a suitable installation for working the method according to the invention. The figure shows a reverse-flow reactor 1 comprising two packed beds 2,3 and a gasification chamber 4. At each end the reverse-flow reactor 1 is provided with openings 5,6 for the supply or discharge of gas, as will be explained below. Biomass such as, for example, grass from 4 verges, elephant grass and wood chippings from willow and poplar are supplied via a tapered tube, reaching the gasification chamber via opening 8.
Via a tube 9 and a shuttle valve 10 in a first position, an oxygen-comprising gas such as air is supplied to opening 5. The air is heated in the packed bed 2 and is introduced into the gasification chamber 4. A small amount of oxygen is supplied, and the heat produced during the reaction of oxygen with biomass or its pyrolysis products, effectuates gasification of the biomass. In this manner a hot gasification products-comprising stream is formed which is discharged via the packed bed 3. In the packed bed 3, the hot gasification products-comprising stream gives off heat to the bed material. Via a shuttle valve 11 in a first position, the gasification products-comprising gas is discharged through discharge pipe 12. The gas may be utilized for all kinds of purposes, such as for synthesis purposes or for the generation of electricity. When the down-stream end of the packed bed 2 is becoming so cold that the oxygen-comprising gas is no longer heated sufficiently, or the down-stream end of the packed bed 3 is becoming so hot that the gasification products-comprising gas is no longer cooled sufficiently, the shuttle valves 10,11 are switched to a second position, reversing the flow direction through the reverse-flow reactor. This results in the packed bed 3 being cooled again and the packed bed 2 being heated. In this way the heat remains to a large extent inside the installation and the biomass can be gasified at high temperature in a man- ner favourable with respect to energy.
For starting the installation, the oxygen supply to the biomass may temporarily be increased so that more biomass is incinerated and more heat develops. Alternatively, a packed bed may first be heated electrically. As is known in the field, the packed beds may comprise, for example, alumina granules having a size of, say 5 mm. They may also comprise catalyst granules. These will then be located substantially in a zone in the packed bed where temperatures occur that are high enough to catalyze 5 the reaction, but not so high that the catalytic activity of the catalyst granules is destroyed.
Since the mol stream of hot gasification products- comprising gas is larger than the mol stream of oxygen- comprising gas, the packed beds 2,3 have to be cooled (not shown) . This is done to advantage in a direction opposite to the heat gradient, so that, for example, hot steam may be obtained for the generation of electricity or for the production of processing heat. Instead of cooling, it is also possible to discharge a part of the hot gas from the gasification chamber 4, or optionally also from a hot part of the packed bed 2,3.
Advantageously the oxygen-comprising gas supplied to the reverse-flow reactor 1 is oxygen-enriched air or substantially pure oxygen. In this manner it is possible to obtain a gasification products-comprising gas of a higher caloric value.
According to an interesting embodiment, the axis of the supply opening for biomass is substantially horizontal.
This prevents that due to diffusion hot vapours already start the pyrolysis process of the biomass, and that tar formation impedes the transport of biomass. As known in the field, the liquid slag may, via a slag discharge opening 13 which in this case is embodied as overflow, be quenched in cold water. This effectively immobilizes harmful heavy metals that may be present .
All parts of the installation that are likely to be exposed to much increased temperatures are, as is known in the field, manufactured from fireproof materials of the kind used, for example, in blast furnaces. Apart from ceramic materials, fireproof concrete is a material that according to the invention in particular comes to mind. Such an installation can be cast in accordance with known techniques, and comprises only a limited number of parts. As a consequence the number of joints is also limited. Accordingly, as represented in the Figure, the top of the installation could, for example, be a lid. The resulting 6 gap between the lid and the installation underneath can simply, in a manner known in itself, be sealed, which sealing will be maintained even at fluctuations temperatures . In a manner known as such, the installation is suitably insulated and may also be provided with insulation material on the outside. The shaded part in the figure represents the insulation material. A suitable insulation and sealing material is alumina-silica fibre-compris- ing insulation material.
At the high temperatures in the gasification chamber 4, tar-like products that may be present are gaseous. When they are passed through a bed 2 or 3, they may precipitate, which is undesirable. According to a favourable embodiment oxygen, for example in the form of air, is supplied to the gasification chamber 4 and this should preferably always be above the bed via which the gasification products-comprising gas is discharged. In this manner the deposition of tar-like products in the beds is prevented efficiently and economically.

Claims

1. A method for the gasification of biomass-com- prising material in the presence of an oxygen-comprising gas in a gasification installation, during which gasification a hot gasification products-comprising gas is formed, which installation comprises a gasification chamber provided with an inlet opening for the supply of biomass, means for cooling the hot gasification products-comprising gas and for using the released heat to heat the oxygen- comprising gas before its introduction into the gasification chamber, for which purpose the installation is provided with a first opening and a second opening for the supply and discharge of gas, and oxygen-comprising gas is alternatingly supplied via a first opening, and gasification products-comprising gas is discharged via a second opening, and vice versa, characterized in that as installation a reverse-flow reactor is employed, comprising two packed beds between which there is a space serving as gasification chamber, the reverse-flow reactor being provided with the first and the second opening, and the line of direction in which the gas supply passes through the biomass cuts the line of direction in which the biomass is supplied.
2. A method according to claim l, characterized in that the biomass is supplied at an angle of substantially 90° .
3. A method according to claim l or 2, charac er- ized in that the biomass is supplied via a tapered supply opening.
3. .An installation for the gasification of biomass- comprising material, which installation comprises a reverse-flow reactor having a first chamber for a first packed bed and a second space for a second packed bed, between the first and the second chamber a gasification space is provided, the end of the first chamber opposite to the gasification chamber is provided with a first opening and the end of the second chamber opposite to the 8 gasification space is provided with a second opening, the gasification space is provided with a third opening for the supply of biomass-comprising material, and the floor of the gasification space is provided with a fourth open- ing for the discharge of slag, the walls of the chambers and the space being formed from fireproof concrete.
PCT/NL1999/000089 1998-02-19 1999-02-19 Method for the gasification of biomass-comprising material and installation therefor Ceased WO1999042540A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU32787/99A AU3278799A (en) 1998-02-19 1999-02-19 Method for the gasification of biomass-comprising material and installation therefor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1008361 1998-02-19
NL1008361A NL1008361C2 (en) 1998-02-19 1998-02-19 Method for gasifying biomass-containing material and equipment therefor.

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WO2003012013A1 (en) 2001-08-02 2003-02-13 T.G.E. Tech. Ltd. Method and apparatus for the treatment of domestic waste
DE10225728A1 (en) * 2002-06-11 2004-01-22 Kecke, Thilo Device for producing a combustible gas using high pressure wood gasification comprises a fuel supply, combustion chamber, heat exchanger, tar removal arrangement and ash removal arrangement provided in a gas-tight closed reaction chamber
WO2005026296A1 (en) * 2003-09-16 2005-03-24 Anker Jarl Jacobsen A method and apparatus for producing synthesis gas from biomass
GR20080100648A (en) * 2008-10-06 2010-05-13 Διονυσιος Χαραλαμπους Χοϊδας Arrangement for the production of gas poor in organic materials
EP3988501A1 (en) 2020-10-22 2022-04-27 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Method and system for producing co-rich synthesis gas by means of partial oxidation

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WO2003012013A1 (en) 2001-08-02 2003-02-13 T.G.E. Tech. Ltd. Method and apparatus for the treatment of domestic waste
US7028624B2 (en) 2001-08-02 2006-04-18 T.G.E. Tech Ltd. Method and apparatus for the treatment of domestic waste
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US7951212B2 (en) 2003-09-16 2011-05-31 Jacobsen Anker J Method and apparatus for producing synthesis gas from biomass
GR20080100648A (en) * 2008-10-06 2010-05-13 Διονυσιος Χαραλαμπους Χοϊδας Arrangement for the production of gas poor in organic materials
EP3988501A1 (en) 2020-10-22 2022-04-27 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Method and system for producing co-rich synthesis gas by means of partial oxidation

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