EP4065667A1 - Gazéificateur à lit fixe servant à produire un produit gazeux à partir de particules carbonées en vrac - Google Patents

Gazéificateur à lit fixe servant à produire un produit gazeux à partir de particules carbonées en vrac

Info

Publication number
EP4065667A1
EP4065667A1 EP20825144.7A EP20825144A EP4065667A1 EP 4065667 A1 EP4065667 A1 EP 4065667A1 EP 20825144 A EP20825144 A EP 20825144A EP 4065667 A1 EP4065667 A1 EP 4065667A1
Authority
EP
European Patent Office
Prior art keywords
gasifier
bed
slag
fixed bed
fuel
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.)
Pending
Application number
EP20825144.7A
Other languages
German (de)
English (en)
Inventor
Michael Hofmeister
Horst Dressler
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.)
Mhr Holding Pte Ltd
Original Assignee
Mhr Holding Pte Ltd
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 Mhr Holding Pte Ltd filed Critical Mhr Holding Pte Ltd
Publication of EP4065667A1 publication Critical patent/EP4065667A1/fr
Pending legal-status Critical Current

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
    • C10J3/32—Devices for distributing fuel evenly over the bed or for stirring up the fuel bed
    • 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
    • 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
    • C10J3/34—Grates; Mechanical ash-removing devices
    • C10J3/40—Movable grates
    • 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
    • C10J3/34—Grates; Mechanical ash-removing devices
    • C10J3/40—Movable grates
    • C10J3/42—Rotary grates

Definitions

  • the present invention relates to a fixed bed gasifier according to the preamble of claim 1.
  • a device In order to prevent clogging of the gasifier, a device is needed that breaks up the slag so that combustion air can flow into the fuel particle bed and the product gas can flow out of the fuel particle bed. Only if the reaction in the gasifier is maintained can the slag be transported further in the direction of the support device.
  • a fork element with a plurality of Zin ken is known, which is intermittently retracted into the fuel particle bed and breaks up slag.
  • the prongs of the fork element are distributed over the entire horizontal cross-section of the carburetor. This also leads to an excessive disruption of the gasification process and an increased tar load on the product gas and thus a deterioration in the product gas quality.
  • the piercing element Due to the possibility of positioning the piercing element at different points above the fuel particle fill, the piercing element can be made small and nevertheless all areas of the fuel particle fill can be reached.
  • the stitch element moves intermittently into the fuel part chen serialung in the gasification operation.
  • the tine pierces the material column linearly from above and also moves out the same way.
  • the drive means changes the position of the stitch element so that it does not enter the same stitch channel again. This repeated local piercing, staggered in time at different locations of the fuel particle bed, moves the gasifier bed and the sintering process of slag particles, which would clog the entire cross-section of the gasifier, is disrupted.
  • Biomass particles, particles made of crushed plastics or crushed waste particles that contain carbon are suitable as pourable fuel particles.
  • the advantageous embodiment according to claim 2 provides a structurally simple possibility explanation to position the stitch element at different locations over the fuel particle bulk.
  • the thermal load on the support device is reduced and the service life of the support device is enlarged.
  • 1a is a schematic representation of a fixed bed gasifier in a 39an view according to a first embodiment with a rotatable stitch element, wherein the stitch element is not retracted into the biomass;
  • Fig. 1b is a schematic representation of the first embodiment, wherein the Sti chelement is retracted in the fuel particle bed;
  • FIG. 2a shows a view from above of a second embodiment with two slag breaking devices arranged next to one another;
  • Figures 2b and 2c are side views of the second embodiment; 3 shows a third embodiment;
  • Fig. 5 shows a fifth embodiment
  • FIG. 6 shows a sixth embodiment of the invention.
  • FIG. 1a and 1b schematically show a first embodiment of a fixed bed gasifier according to the present invention for generating product gas from pourable carbon-containing fuel particles 1 in the form of biomass particles, particles made of plastic or other carbon-containing fuel particles.
  • the fixed bed gasifier comprises a gasifier container 2 with a rectangular cross-section with side walls 4, an air supply 6 in the upper area of the gasifier 2, a fuel supply 8 which opens laterally into the gasifier 2, a support device 10 for the fuel particle bulk in the form of a flat, horizontally arranged grate 101, a product gas and ash extractor 12 from the area under the grate 10 and a slag breaking device 14.
  • the slag breaking device 14 comprises a stitch element 16 and a drive means 18.
  • the drive means 18 comprises a rotatable shaft 20 for rotating the stitch element in a horizontal plane and a vertical movement means 22 for linearly reciprocating movement of the stitch element 16 in the vertical direction.
  • the piercing element 16 comprises a vertically aligned prong 24 which is mounted on one end of a flat cross member 26. At its other end, the flat cross member 26 is mounted on the rotatable shaft 20.
  • a vertical movement means 22 can for example be designed as a double hydraulic cylinder.
  • the rotatable shaft 20 is preferably rotated by an electric motor.
  • the rotatable shaft 20 with stitch element 16 is arranged centrally in the carburetor 2 above the fixed bed of fuel particles 1. With this embodiment, only local points on a circular line can be approached. In the case of small carburetors with horizontal cross-sectional areas in the range from 10,000 to 25600 mm 2 , this restriction is harmless. With even larger carburetor cross-sectional areas from 25600 to 42300 mm 2 , instead of one prong 24, two or three prongs can be attached to the flat cross member 26. In the case of even greater carburetor output and cross-sectional areas from 42300 mm 2 , it makes sense to arrange two slag breaking devices 14 next to one another that are operated in parallel. From carburetor cross-sectional areas of 85000 mm 2 , it makes sense to use two slag breaking devices 14 with two or three prongs 24 arranged next to one another.
  • FIGS. 2a, 2b and 2c This use of two slag breaking devices 14-1 and 14-2 arranged next to one another is shown schematically as a second embodiment of the invention in FIGS. 2a, 2b and 2c.
  • 2a shows a plan view of the open carburetor 2 from above with a rectangular cross section with the sides a and b, with a> b.
  • the two slag breaking devices 14-1 and 14-2 are shown.
  • FIG. 2b shows the second embodiment in a view perpendicular to the view in FIG. 2a
  • FIG. 2c shows the second embodiment in a view perpendicular to the views in FIGS. 2a and 2b.
  • FIG. 3 shows a third embodiment which differs from the first embodiment according to FIG. 1 in that instead of the horizontal grate 101, a roller 102 which rotates in a termitting manner is provided as the support device 10.
  • FIG. 4 shows a fourth embodiment which differs from the third embodiment according to FIG. 3 in that, instead of one roller, two rollers 102 rotating intermittently with respect to one another are provided as the support device 10.
  • the rollers 102 are provided with teeth 28 to break up any lumps of slag that are present.
  • Fig. 5 shows a fifth embodiment, which differs from the first embodiment according to FIG. 1 in that instead of the horizontal grate 101, a ge inclined grate 103 is provided as a support device 10, as is known in DE 102018 205 115 A1.
  • 6 shows a sixth embodiment which differs from the first embodiment according to FIG. 1 in that, instead of the horizontal grate 101, a cone crusher 104 that moves in a tumbling motion is provided as the support device 10.
  • the slag crushing devices 14 can also be used to distribute the fuel particles 1 in the gasifier by turning the stitch elements 16 when the fuel particles are filled.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

L'invention concerne un gazéificateur à lit fixe permettant de produire un produit gazeux à partir de particules de combustible carbonées, en vrac, qui comporte un dispositif de broyage de scories avec lequel la qualité du produit gazeux est toutefois altérée le moins possible par le broyage de scories. La possibilité de positionner l'élément de frappe du dispositif de broyage de scories en différents points au-dessus du lit de particules de combustible permet de le concevoir avec des dimensions réduites, tout en permettant d'accéder à toutes les zones du lit de particules de combustible. L'élément de frappe entre par intermittence dans le lit de particules de combustible, en mode de gazéification. Avant toute prochaine entrée dans le lit de particules de combustible, le moyen d'entraînement modifie la position de l'élément de frappe, de sorte qu'il n'entre pas à nouveau dans le même canal de frappe. Cette opération d'entrée locale répétée par frappe déplace le lit du gazéificateur de manière décalée dans le temps en différents points du lit de particules de combustible et le processus de frittage de particules de scories, qui boucherait toute la section transversale du gazéificateur, est perturbé. Ce qui a pour effet de permettre au gaz de s'écouler dans les zones isolées sur toute la section transversale, et pas uniquement dans le « canal piqué ». En outre, le transport de morceaux de scories agglomérés par frittage dans l'intervalle se poursuit, en direction d'un dispositif d'appui, ou lesdits morceaux de scories agglomérés par frittage sont à nouveau broyés.
EP20825144.7A 2019-11-26 2020-11-25 Gazéificateur à lit fixe servant à produire un produit gazeux à partir de particules carbonées en vrac Pending EP4065667A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019218310.7A DE102019218310A1 (de) 2019-11-26 2019-11-26 Festbettvergaser zum Erzeugen eines Produktgases aus schüttbaren kohlenstoffhaltigen Teilchen
PCT/EP2020/083299 WO2021105171A1 (fr) 2019-11-26 2020-11-25 Gazéificateur à lit fixe servant à produire un produit gazeux à partir de particules carbonées en vrac

Publications (1)

Publication Number Publication Date
EP4065667A1 true EP4065667A1 (fr) 2022-10-05

Family

ID=73854809

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20825144.7A Pending EP4065667A1 (fr) 2019-11-26 2020-11-25 Gazéificateur à lit fixe servant à produire un produit gazeux à partir de particules carbonées en vrac

Country Status (4)

Country Link
US (2) US20220403265A1 (fr)
EP (1) EP4065667A1 (fr)
DE (1) DE102019218310A1 (fr)
WO (1) WO2021105171A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022106170A1 (de) 2022-03-16 2023-09-21 MHR Holding Pte. Ltd. Festbettvergaser mit Walzen

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1772643A (en) * 1922-04-27 1930-08-12 Gas Res Co Gas producer
GB208001A (en) * 1922-11-30 1923-12-13 Thomas Roland Wollaston Improved method of operating the crusher rolls employed with gas producers, furnaces and the like
US1939470A (en) * 1928-04-20 1933-12-12 Semet Solvay Eng Corp Apparatus for producing combustible gas
GB315327A (en) * 1928-07-11 1930-08-07 Alfred Jadoul Improvements in or relating to gas producers
GB460554A (en) * 1936-05-08 1937-01-29 Karl Koller Improvements in and relating to gas producers
NO750381L (fr) * 1974-02-15 1975-08-18 Kamyr Inc
US4583992A (en) * 1984-12-04 1986-04-22 Buck Rogers Mfg. Co., Inc. Biomass gasifier and charcoal producer
US5226927A (en) * 1991-02-13 1993-07-13 Southern California Edison Wood gasifier
US7780750B2 (en) * 2006-04-20 2010-08-24 Brent Carman Integrated biomass converter system
US8845769B2 (en) * 2010-01-19 2014-09-30 Zeropoint Clean Tech, Inc. Downdraft gasifier with improved stability
US9096807B2 (en) * 2012-03-09 2015-08-04 General Electric Company Biomass gasifier with disruption device
DE102018205115B4 (de) 2018-04-05 2021-10-14 Rosmarin Holdings Limited Festbettvergaser zum Erzeugen eines Produktgases aus schüttbaren Biomasseteilchen

Also Published As

Publication number Publication date
WO2021105171A1 (fr) 2021-06-03
US20240059990A1 (en) 2024-02-22
DE102019218310A1 (de) 2021-05-27
US20220403265A1 (en) 2022-12-22

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