WO2003040267B1 - A process and gasifier for gasification of solid biofuel - Google Patents

A process and gasifier for gasification of solid biofuel

Info

Publication number
WO2003040267B1
WO2003040267B1 PCT/DK2002/000744 DK0200744W WO03040267B1 WO 2003040267 B1 WO2003040267 B1 WO 2003040267B1 DK 0200744 W DK0200744 W DK 0200744W WO 03040267 B1 WO03040267 B1 WO 03040267B1
Authority
WO
WIPO (PCT)
Prior art keywords
zone
gasifier
gasification
narrowed portion
hearth
Prior art date
Application number
PCT/DK2002/000744
Other languages
French (fr)
Other versions
WO2003040267A3 (en
WO2003040267A2 (en
Inventor
Henrik Houmann Jakobsen
Original Assignee
Biosynergi Proces Aps
Henrik Houmann Jakobsen
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 Biosynergi Proces Aps, Henrik Houmann Jakobsen filed Critical Biosynergi Proces Aps
Priority to AT02787423T priority Critical patent/ATE301177T1/en
Priority to EP02787423A priority patent/EP1442101B1/en
Priority to DE60205400T priority patent/DE60205400D1/en
Priority to AU2002351709A priority patent/AU2002351709A1/en
Publication of WO2003040267A2 publication Critical patent/WO2003040267A2/en
Publication of WO2003040267A3 publication Critical patent/WO2003040267A3/en
Publication of WO2003040267B1 publication Critical patent/WO2003040267B1/en

Links

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
    • C10J3/22—Arrangements or dispositions of valves or flues
    • C10J3/24—Arrangements or dispositions of valves or flues to permit flow of gases or vapours other than upwardly through the fuel bed
    • C10J3/26—Arrangements or dispositions of valves or flues to permit flow of gases or vapours other than upwardly through the fuel bed downwardly
    • 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
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0953—Gasifying agents
    • C10J2300/0969—Carbon dioxide
    • 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

Landscapes

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

Abstract

A process and a gasifier for the gasification of solid, moderately flowable biofuel in a downdraft gasifier having an open core and a fixed gasification bed wherein the fuel material and primary air are fed at the top so as from the top and downward to pass a) a drying zone, b) a pyrolysis zone, c) a combustion zone involving flaming pyrolysis to which secondary air is fed, and where the fuel is supported by way of a narrowed portion in the inner cross section of the gasifier, d) a reduction zone, and e) optionally an inactive charcoal zone. The narrowed portion in the flaming pyrolysis zone (c) retains the fuel material through bridging across the opening of the narrowed portion until the material as a result of the partial combustion has been converted into a material having such a flowability that it resumes the downward movement towards the reduction zone. A self-adjustment of the decisive part of the process is obtained thereby ensuring a long-term, stable gasification even in a small gasifier.

Claims

AMENDED CLAIMS[received by the International Bureau on 10 June 2003 (10.06.2003) original claims 1 and 6 amended; remaining claims uncahnged (3 pages)]
1. A process for gasification of solid, moderately flowable biofuel in a downdraft gasifier having an open core and a fixed gasification bed wherein the fuel material and primary air are fed at the top so as from the top and downward to pass
a) a drying zone b) a pyrolysis zone c) a combustion zone involving flaming pyrolysis to which secondary air is fed, and where the fuel is supported by way of a narrowed portion in the inner cross section of the gasifier, d) a reduction zone, and e) optionally an inactive charcoal zone,
characterised by retaining the fuel material by means of the narrowed portion in the flaming pyrolysis zone (c) through bridging across the opening or openings of the narrowed portion until the material as a result of the partial combustion has been converted into a material in the form of charcoal, having such a flowability that it resumes the downward movement towards the reduction zone, whereby a separation of the combustion zone and the reduction zone is ensured, the reduction zone being located under the narrowed portion in the inner cross section of the gasifier.
2. A process according to claim 1, characterised in that the fuel material between the combustion zone (c) and the reduction zone (d) passes a partial oxidation zone involving a partial oxidation of gas and tar substances, and where a gasification agent is added in the oxidation zone.
3. A process according to claim 2, characterised in that the gasification agent is oxygen, water vapour, CO2 or a mixture thereof.
4. A process according to claim 1, characterised in that the fuel material is a combustible organic material in form of solid, relatively small pieces of material of suitably uniform sizes.
5. A process according to claim 4, characterised in that the fuel material is wood chips, shavings, saw dust or compressed wood pellets.
6. A downdraft gasifier having an open core and a fixed gasification bed for the gasification of a solid, moderately flowable biofuel, said gasifier including a reactor having an opening at the top for feeding fuel material and primary air in the following sequence from the top and downward to
a) a drying zone b) a pyrolysis zone c) a combustion zone involving flaming pyrolysis and having an opening for feeding secondary air and a narrowed portion in the inner cross section of the gasifier, d) a reduction zone, and e) optionally an inactive charcoal zone,
and a collecting compartment at the bottom of the gasifier having means for removing ash and the fuel gas resulting from the gasification, respectively, characterised in that the narrowed portion in the flaming pyrolysis zone (c) is a hearth having one or more openings dimensioned relative to the biofuel used in such a manner that the fuel material is retained through bridging across the opening or openings of the hearth until the material as a result of the partial combustion has been converted into a material in the form of charcoal, having such a flowability that it resumes the downward movement towards the reduction zone, whereby a separation of the combustion zone and the reduction zone is ensued, the reduction zone being located under the narrowed portion in the inner cross section of the gasifier. 21
7. A downdraft gasifier according to claim 6, characterised in that an opening is provided after the narrowed portion in the flaming pyrolysis zone (c) and before the reduction zone (d) for feeding the gasification agents.
8. A downdraft gasifier according to any of the claims 6 to 7, characterised in that the hearth has a single opening formed as a truncated cone downwardly ending in a cylindrical channel or that the hearth has a single opening formed as a slot downwardly ending in a rectangular channel.
9. A downdraft gasifier according to any of the claims 6 to 7, characterised in that the hearth has more than one opening.
10. A downdraft gasifier according to claim 9, characterised in that the openings of the hearth are formed as a grate or in that the hearth is provided with openings of a circular or square horizontal cross section.
11. A plant for heat or a combined heat and power production including a downdraft gasifier according to any of the claims 6-10.
PCT/DK2002/000744 2001-11-05 2002-11-05 A process and gasifier for gasification of solid biofuel WO2003040267A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT02787423T ATE301177T1 (en) 2001-11-05 2002-11-05 METHOD AND CARBURETOR FOR GASIFICATION OF SOLID BIOFUEL
EP02787423A EP1442101B1 (en) 2001-11-05 2002-11-05 A process and gasifier for gasification of solid biofuel
DE60205400T DE60205400D1 (en) 2001-11-05 2002-11-05 METHOD AND CARBURETOR FOR GASIFYING SOLID BIOFUEL
AU2002351709A AU2002351709A1 (en) 2001-11-05 2002-11-05 A process and gasifier for gasification of solid biofuel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200101638 2001-11-05
DK200101638A DK174582B1 (en) 2001-11-05 2001-11-05 Solid biofuel gasification process and generator

Publications (3)

Publication Number Publication Date
WO2003040267A2 WO2003040267A2 (en) 2003-05-15
WO2003040267A3 WO2003040267A3 (en) 2003-09-25
WO2003040267B1 true WO2003040267B1 (en) 2003-11-20

Family

ID=8160814

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2002/000744 WO2003040267A2 (en) 2001-11-05 2002-11-05 A process and gasifier for gasification of solid biofuel

Country Status (6)

Country Link
EP (1) EP1442101B1 (en)
AT (1) ATE301177T1 (en)
AU (1) AU2002351709A1 (en)
DE (1) DE60205400D1 (en)
DK (1) DK174582B1 (en)
WO (1) WO2003040267A2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090133329A1 (en) * 2006-01-10 2009-05-28 Puhdas Energia Oy Method for gasifying and gasifying unit
FI122860B (en) 2007-05-25 2012-08-15 Gasek Oy Procedure for gasification of solid fuel and co-stream gasifier
RU2482164C1 (en) * 2011-11-21 2013-05-20 Лариса Яковлевна Силантьева Gasification reactor
US8546636B1 (en) 2013-01-28 2013-10-01 PHG Energy, LLC Method for gasifying feedstock
US11242494B2 (en) 2013-01-28 2022-02-08 Aries Clean Technologies Llc System and process for continuous production of contaminate free, size specific biochar following gasification
BR112015017918B1 (en) * 2013-01-28 2021-12-28 PHG Energy, LLC GASIFICATOR AND RAW MATERIAL GASIFICATION METHOD
US8721748B1 (en) 2013-01-28 2014-05-13 PHG Energy, LLC Device with dilated oxidation zone for gasifying feedstock
IT201800002481A1 (en) * 2018-02-08 2019-08-08 Spa Curti Costruzioni Meccaniche Gasifier plant
ES2908469T3 (en) * 2018-02-08 2022-04-29 Spa Curti Costruzioni Meccaniche gasification plant
IT201800002482A1 (en) * 2018-02-08 2019-08-08 Spa Curti Costruzioni Meccaniche Gasifier plant
IT201800002483A1 (en) * 2018-02-08 2019-08-08 Spa Curti Costruzioni Meccaniche Gasifier plant

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1821263A (en) * 1926-10-25 1931-09-01 Imbert Georges Gas producer
DE3131476C2 (en) * 1981-08-08 1983-12-22 Fritz Werner Industrie-Ausrüstungen GmbH, 6222 Geisenheim Wood gas generator
CA1208911A (en) * 1981-09-23 1986-08-05 Michael S. Graboski Apparatus for and method of gasifying matter
NL8900939A (en) * 1989-04-14 1990-11-01 Eduard Thomas Jacobus Van Der Gas generator for reversed combustion - has double-walled casing contg. cylinder and closable by lid and fire-proof throat with eccentric air ports
DK172277B1 (en) * 1994-10-28 1998-02-16 Dk Teknik Dansk Kedelforening Appts. for optimal gasification of wood chips in auxiliary flow generator - has combustion and pyrolysis zones continuously stabilised and controlled in level area

Also Published As

Publication number Publication date
DE60205400D1 (en) 2005-09-08
DK200101638A (en) 2003-05-06
EP1442101A2 (en) 2004-08-04
WO2003040267A3 (en) 2003-09-25
EP1442101B1 (en) 2005-08-03
ATE301177T1 (en) 2005-08-15
WO2003040267A2 (en) 2003-05-15
AU2002351709A1 (en) 2003-05-19
DK174582B1 (en) 2003-06-30

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