EP1558708B1 - Gas generator - Google Patents

Gas generator Download PDF

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Publication number
EP1558708B1
EP1558708B1 EP03753629A EP03753629A EP1558708B1 EP 1558708 B1 EP1558708 B1 EP 1558708B1 EP 03753629 A EP03753629 A EP 03753629A EP 03753629 A EP03753629 A EP 03753629A EP 1558708 B1 EP1558708 B1 EP 1558708B1
Authority
EP
European Patent Office
Prior art keywords
gasifier
throat
gas generator
grate
control element
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.)
Expired - Lifetime
Application number
EP03753629A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1558708A1 (en
Inventor
Timo Saares
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1558708A1 publication Critical patent/EP1558708A1/en
Application granted granted Critical
Publication of EP1558708B1 publication Critical patent/EP1558708B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C10J2200/00—Details of gasification apparatus
    • C10J2200/09—Mechanical details of gasifiers not otherwise provided for, e.g. sealing means

Definitions

  • the invention relates to a gas generator comprising a substantially cylindrical gasifier vessel, a grate on which the solid fuel being combusted is fed, a gasifier throat forming in the gasifier vessel a portion with a cross section narrower than that of the other portion of the gasifier and combustion air injection nozzles adapted above the gasifier throat to the gasifier vessel.
  • the throat portion of gasifier vessel has a constant cross-sectional area. As to the generation of clean product gas, however, this is not an optimal situation. This is because the gasifier throat should at the maximum capacity demand conditions preferredly be capable of passing a larger volumetric gas flow than in the minimum capacity operating situation.
  • US-A-5226927 discloses a substantially cylindrical gasifier and the following elements: a grate located at the bottom of the vessel, a gasifier throat with a narrower cross-section than that of the other portion of the gasifier, nozzles located above the throat portion and an element which is concentric with the central axis and which tapers in an upward direction.
  • variable cross-sectional area is implemented by means of a vertically movable control element, particularly a throttle cone.
  • a vertically movable control element particularly a throttle cone.
  • the throttle cone When the throttle cone is in its upper position, the volumetric gas flow through the gasifier throat is reduced to a value corresponding the minimum capacity of gas generator operation.
  • a larger volumetric gas flow is allowed to pass unrestrictedly to the reducing layer of coal thus facilitating the operation of the gas generator at its maximum capacity.
  • the gas generator in accordance with the invention is particularly characterized in that at the gasifier throat, substantially concentric with the center axis of the cylindrical gasifier vessel, is adapted an upward tapering control element of the gasifier throat cross-sectional area, the tapering control element being supported by a shaft adapted to extend through the underlying gasifier grate, and that the control element is adapted movable in vertical direction.
  • a preferred embodiment of the gas generator according to the invention is characterized in that the control element is a throttle cone, the support shaft of which is adapted to pass through the gasifier grate.
  • Another preferred embodiment of the gas generator according to the invention is characterized in that the support shaft of the throttle cone is connected to the gasifier grate and that the support shaft is adapted rotatable with simultaneous rotation of the gasifier grate.
  • a still another preferred embodiment of the gas generator according to the invention is characterized in that the vertical movement of the support shaft of the control element is implemented by hydraulic means.
  • the gasifier of the gas generator according to the invention is made adjustable to cope with the actual gasifier output demand so as to maintain at all times an optimum volumetric gas flow rate and temperature in the gasifier throat, whereby proper conditions are created for the generation of a product gas at maximized quality.
  • reference numeral 1 a gasifier vessel that basically has a straight cylindrical shape with the exception of the gasifier throat 6, wherein the cross-sectional area of the vessel is constricted distinctly smaller than elsewhere in the gasifier vessel.
  • the gasifier throat 6 is situated above the gasifier grate 2.
  • Reference numeral 3 designates a gasifying coal bed and reference numeral 4 designates combustion air injection nozzles that are distributed evenly about the periphery of the gasifier vessel.
  • the gasifier combustion zone 7 operates above the combustion air injection nozzles 4.
  • a controllable throttle cone 5 of the gasifier throat In the middle of the gasifier, at the gasifier throat 6 in a position concentric with the vertical center axis of the gasifier is adapted a controllable throttle cone 5 of the gasifier throat.
  • the shape of the throttle cone is made upward tapering.
  • the throttle cone is supported by a shaft 9 adapted to extend through the underlying gasifier grate 2.
  • a hydraulic actuator mechanism that moves the throttle cone 5 in the vertical direction thus accomplishing the control of the open cross-sectional area in the gasifier throat.
  • the volumetric flow rate of gas passing via the throat In the upper position of the throttle cone, the volumetric flow rate of gas passing via the throat is controlled to a minimum value corresponding to the smallest output of the gas generator.
  • a preset lower position of the throttle cone a larger volumetric flow of gas is permitted unobstructedly to the reducing coal bed thus facilitating maximum output from the gas generator.
  • the gasifier grate 2 can be made rotatable, whereby the rotating movement is advantageously accomplished through the rotation of the cone support shaft 9.
  • Such rotating movement of the shaft can be implemented using any appropriate actuator construction well known to a person skilled in the art.
  • the rotating movement can be imposed directly on the grate, whereby the grate in turn rotates the throttle cone.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Solid-Fuel Combustion (AREA)
  • Industrial Gases (AREA)
  • Treating Waste Gases (AREA)
  • Glass Compositions (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Hydrogen, Water And Hydrids (AREA)
EP03753629A 2002-11-01 2003-10-21 Gas generator Expired - Lifetime EP1558708B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI20021946A FI113781B (fi) 2002-11-01 2002-11-01 Kaasugeneraattori
FI20021946 2002-11-01
PCT/FI2003/000780 WO2004039925A1 (en) 2002-11-01 2003-10-21 Gas generator

Publications (2)

Publication Number Publication Date
EP1558708A1 EP1558708A1 (en) 2005-08-03
EP1558708B1 true EP1558708B1 (en) 2008-08-13

Family

ID=8564858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03753629A Expired - Lifetime EP1558708B1 (en) 2002-11-01 2003-10-21 Gas generator

Country Status (9)

Country Link
EP (1) EP1558708B1 (fi)
JP (1) JP2006504820A (fi)
AT (1) ATE404653T1 (fi)
AU (1) AU2003271794A1 (fi)
DE (1) DE60322934D1 (fi)
ES (1) ES2314231T3 (fi)
FI (1) FI113781B (fi)
PT (1) PT1558708E (fi)
WO (1) WO2004039925A1 (fi)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI122109B (fi) * 2006-11-17 2011-08-31 Leo Ruokamo Menetelmä polttoaineen kaasuttamiseksi ja kaasutusgeneraattori
WO2013034608A1 (fr) * 2011-09-05 2013-03-14 Xylowatt S.A. Gazeifieur de combustible solide carbone
FI123665B (fi) * 2012-02-20 2013-09-13 Raute Oyj Menetelmä kaasugeneraattorin toiminnan optimoimiseksi ja kaasugeneraattori
JP6936914B2 (ja) * 2018-02-20 2021-09-22 明和工業株式会社 固体燃料のガス化装置、発電装置及びガス化方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4098586A (en) * 1977-08-01 1978-07-04 General Electric Company Grate for coal gasifier
CH678973A5 (fi) * 1988-11-02 1991-11-29 Helmut Juch
US5226927A (en) * 1991-02-13 1993-07-13 Southern California Edison Wood gasifier
DE19916931C2 (de) * 1999-03-31 2001-07-05 Deponie Wirtschaft Umweltschut Luftzuführrohr für einen Vergaser zur Erzeugung von Brenngas

Also Published As

Publication number Publication date
JP2006504820A (ja) 2006-02-09
WO2004039925A1 (en) 2004-05-13
EP1558708A1 (en) 2005-08-03
ES2314231T3 (es) 2009-03-16
ATE404653T1 (de) 2008-08-15
FI113781B (fi) 2004-06-15
AU2003271794A1 (en) 2004-05-25
PT1558708E (pt) 2008-10-02
DE60322934D1 (de) 2008-09-25
FI20021946A0 (fi) 2002-11-01

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