US20140182490A1 - Gasifier for a solid carbon fuel - Google Patents

Gasifier for a solid carbon fuel Download PDF

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Publication number
US20140182490A1
US20140182490A1 US14/196,534 US201414196534A US2014182490A1 US 20140182490 A1 US20140182490 A1 US 20140182490A1 US 201414196534 A US201414196534 A US 201414196534A US 2014182490 A1 US2014182490 A1 US 2014182490A1
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Prior art keywords
fuel
gasifier
zone
pyrolysis
arm
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Abandoned
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US14/196,534
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English (en)
Inventor
Frederic Bourgois
Alexandre Bacq
Johan Klein
Michael Haube
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Xylowatt S A
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Xylowatt S A
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Assigned to Xylowatt S.A. reassignment Xylowatt S.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BACQ, Alexandre, BOURGOIS, FREDERIC, HAUBE, Michael
Assigned to Xylowatt S.A. reassignment Xylowatt S.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KLEIN, JOHAN
Publication of US20140182490A1 publication Critical patent/US20140182490A1/en
Abandoned legal-status Critical Current

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    • 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
    • C10J3/723—Controlling or regulating the gasification process
    • 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
    • C10J3/30—Fuel charging devices
    • 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
    • C10J3/32—Devices for distributing fuel evenly over the bed or for stirring up the fuel bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
    • 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
    • C10J2200/156—Sluices, e.g. mechanical sluices for preventing escape of gas through the feed inlet
    • 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
    • C10J2300/16—Integration of gasification processes with another plant or parts within the plant
    • C10J2300/164—Integration of gasification processes with another plant or parts within the plant with conversion of synthesis gas
    • C10J2300/1643—Conversion of synthesis gas to energy
    • C10J2300/165—Conversion of synthesis gas to energy integrated with a gas turbine or gas motor

Definitions

  • This disclosure relates generally to gasifiers and, more specifically to a gasifier for gasification of a solid carbon fuel, such as, for example, solid biomass.
  • Known gasifiers make it possible to produce a fuel gas starting from a solid carbon fuel, in particular starting from wood waste, such as that obtained, for example, from sawmills or from logging operations, or starting from agricultural byproducts (straw, etc.), or also from recycled wood.
  • This fuel gas contains carbon monoxide and hydrogen and can subsequently be used for various purposes such as, for example, feed for a gas turbine or an internal-combustion engine, a boiler, or a furnace.
  • Patent application WO 2007/081296 mentions a gasifier that includes a rotary valve located in the upper part of the reactor. This device offers proper metering of fuel feed, but it does have the drawback that it is not sufficiently impervious to the gases and requires an additional sealing mechanism upstream, which increases its cost. Moreover, the valve must be able to withstand the high temperatures prevailing in the first vessel when the gasifier is in operation, which requires valves that are particularly expensive.
  • Patent application WO 2001/051591 mentions a gasifier that includes a lock arranged laterally relative to the upper part of the reactor, which can provide good hermeticity against the gases.
  • This patent application also mentions a lateral conduit equipped with an endless screw providing the connection between the lock and the first vessel, which also provides proper metering of the feed of material.
  • the endless screw is also liable to become fouled, which requires maintenance, and/or to become blocked with pieces of fuel.
  • the end of the screw opens into the vessel, it is subjected to the high temperatures prevailing there when the gasifier is in operation, which makes it necessary to use an expensive screw.
  • Patent application WO 2010/109501 mentions a gasifier in the form of a vessel, in the upper part of which the fuel is introduced laterally. The fuel is then retained in a drying zone of the vessel by means of a horizontal partition with a central hole. An endless screw is mounted vertically through this hole for transferring the fuel from the drying zone to a pyrolysis zone located directly underneath the horizontal partition. This endless screw opens into the pyrolysis zone and must be able to withstand the high temperatures prevailing there when the gasifier is in operation, which requires screws that are particularly resistant and expensive. The endless screw is also liable to become fouled, which requires maintenance, and/or to become blocked with pieces of fuel.
  • One aim of the teachings of the present disclosure is to solve, at least partially, the problems with the gasifiers mentioned above.
  • an example gasifier includes a first vessel that includes a movable pusher mounted between feeding means and a horizontal plate.
  • the movable pusher is designed for pushing the fuel retained on the horizontal plate into a pyrolysis zone and is positioned or positionable above the horizontal plate.
  • the horizontal plate forms a thermal screen that protects both the fuel feeding means and the pusher against the high temperatures prevailing in the first vessel (such as, for example, against the radiation and the flames in particular).
  • material transfer mechanisms e.g., the feeding means and/or the pusher
  • a movable pusher of this example also takes up less space vertically and is simpler and more reliable than the vertical endless screw ( 12 ) proposed in patent application WO-2010/109501.
  • the movable pusher includes at least one arm extending horizontally above the plate and mounted rotatably about a second vertical axis.
  • a rotary pusher allows better distribution of the fuel on the fuel bed in the pyrolysis zone, which improves the quality of the pyrolysis reaction. This can reduce the tar content of the gas produced.
  • U.S. Pat. No. 5,755,837 proposes equipping an upper part of a vessel with an inclined channel.
  • this device will cause greater accumulation of material at the points where it falls onto the fuel bed.
  • the level of fuel will be greater at the periphery of the first vessel than in its central part.
  • British Patent GB 696682 proposes equipping an upper part of a vessel with a mechanism with two perforated rotating plates.
  • the fuel will be placed opposite the holes.
  • this mechanism is liable to become fouled and/or to become blocked with pieces of fuel.
  • the example gasifier disclosed herein includes levelling means that are adapted to at least partially level a top surface of a bed of solid fuel in the pyrolysis zone.
  • the examples disclosed herein include a mechanism acting directly on the fuel bed rather than acting on the pouring of fuel onto the bed, thus reducing or eliminating the drawbacks of the known mechanisms.
  • the levelling means can give even better distribution of the fuel on the fuel bed in the pyrolysis zone, which improves the quality of the pyrolysis reaction.
  • the levelling means includes at least one arm extending horizontally at a level of a top surface of the bed of solid fuel in the pyrolysis zone.
  • the at least one arm is mounted rotatably about a third vertical axis C. This constitutes a simple, reliable and effective means for distributing the solid material more uniformly on the bed of material in the pyrolysis zone.
  • FIG. 1 shows schematically a front section of an example gasifier according to the teachings of this disclosure
  • FIG. 2 shows schematically a front section of another example gasifier according to the teachings of this disclosure
  • FIG. 3 shows schematically a cross section of the gasifier in FIG. 2 ;
  • FIG. 4 shows schematically a front section of another example a gasifier according to the teachings of this disclosure
  • FIG. 5 shows schematically a front section of another example gasifier according to the teachings of this disclosure
  • FIG. 6 shows schematically a cross section of the gasifier in FIG. 5 ;
  • FIGS. 7 a and 7 b show schematically a front section and cross section, respectively, of another example a gasifier according to the teachings of this disclosure
  • FIGS. 8 a and 8 b show respectively a front section and a cross section of another example gasifier according to the teachings of this disclosure.
  • example gasifiers that include at least one first vertical vessel equipped with feeding means for introducing fuel at a top and along a first vertical axis in the first vessel.
  • the example vessel includes a pyrolysis zone wherein the fuel undergoes pyrolysis, a combustion zone for burning pyrolysis gases from the pyrolysis zone, a reduction zone for gasifying the carbonized fuel from the pyrolysis zone, and an outlet for collecting gases produced in the reduction zone.
  • the example first vessel further comprising a horizontal plate mounted fixedly between the feeding means and the pyrolysis zone for receiving and retaining the fuel fed into the vessel.
  • the examples disclosed herein relate to a co-current fixed-bed gasifier, formed by a single vessel simultaneously including the pyrolysis zone, the combustion zone and the reduction zone.
  • the teachings of this disclosure are not limited to this type of gasifier but relates to all gasifiers having features of the claims, such as for example counter-current gasifiers, and/or gasifiers that include several vessels in succession, the first vessel being the one where the reactions of pyrolysis of the fuel take place.
  • FIG. 1 shows schematically a front section of an example gasifier ( 1 ) according to the teachings of this disclosure.
  • the example gasifier ( 1 ) is a co-current fixed-bed gasifier.
  • This gasifier is formed by a reactor in the form of a vertical vessel ( 4 ) comprising successively, from top to bottom:
  • the inlet lock ( 5 ) has multiple other forms, for example a rotary valve and/or a double flap sluice and/or any other suitable introducing means.
  • the biomass ( 2 ), for example wood chips, is introduced into the vessel ( 4 ) at the top via the inlet lock ( 5 ).
  • the biomass ( 2 ) arrives - via the intermediate device ( 50 , 51 ) described in more detail below - in the pyrolysis zone ( 10 ), where the biomass ( 2 ) decomposes, under the effect of the heat, into volatile matter and into a carbon-rich solid residue generally called “char” or “coke”. This reaction typically takes place in a temperature range between 300° C. and 700° C.
  • the vessel includes first means for admission of a pyrolysis agent ( 11 )—for example one or more nozzle(s) opening laterally in the vessel at the level of the pyrolysis zone—and which make it possible to introduce a gas there which will supply, directly or indirectly, the energy required for decomposition of the biomass into volatile matter and “char”.
  • the pyrolysis agent can be, for example, a reactive gas containing oxygen which, by burning a fraction of the biomass or of the products of decomposition of the biomass, will release the energy to implement, effect or perform pyrolysis.
  • the pyrolysis agent may also be an inert gas (such as carbon dioxide, nitrogen, steam) which, when preheated, will supply the energy to implement, effect or perform pyrolysis. It can also be a combination of these two types of gases.
  • the “char” is then transferred to the reduction zone ( 30 ) by means that are well known, for example those described in European Patent Application EP11171156.
  • the volatile matter (also called “pyrolysis gases”) entering the combustion zone ( 20 ) is burned there partially or completely.
  • the example vessel includes second means for admission of a gasifying agent ( 21 ).
  • These second means of admission can include, for example, one or more nozzle(s) opening laterally in the vessel at the level of the combustion zone.
  • Gasifying agent is to be understood as a gas capable of reacting with the carbon and/or with the hydrogen contained in the solid fuel. Therefore the gasifying agent can be, for example, the ambient air, a gas with higher oxygen concentration, steam, carbon dioxide or else a mixture of these gases.
  • This combustion produces carbon dioxide (CO 2 ), water (H 2 O), and heat. Typically, temperatures above 1100° C. can be reached in the combustion zone.
  • the “char” that was transferred into the reduction zone will react with the combustion products to form carbon monoxide (CO) and hydrogen (H 2 ).
  • this reaction typically takes place in a temperature range between 300° C. and 800° C. However, it will be possible for this temperature to be higher and reach or even exceed 1300° C. in the case when a fuel richer in carbon is used and/or when preheated reagents are used.
  • the gases produced by this reaction will be collected at the outlet ( 6 ) of the reactor, which is located at the bottom of the vessel ( 4 ).
  • a combustible gas including about 15% to about 30% of CO, about 10% to about 25% of Hz, about 0.5 to about 3% of CH 4 , about 5% to about 15% of CO 2 and about 49% of N 2 when ambient air is used as gasifying agent.
  • the ash can be collected at the bottom ( 40 ) of the vessel.
  • this device includes a horizontal plate ( 50 ) mounted fixedly between the inlet lock ( 5 ) and the pyrolysis zone ( 10 ).
  • the example plate ( 50 ) is positioned and dimensioned to receive and retain, at least partially, the fuel ( 2 ) introduced into the vessel ( 4 ) via the inlet lock ( 5 ).
  • the plate is positioned and dimensioned so that the plate retains the fuel completely and so that the latter can only flow to the pyrolysis zone under an external action, such as under the action of the pusher described below.
  • the position and size of the plate will be adapted to the flow properties of the fuel used, in particular its slope angle (e.g. for wood chips, the slope angle is of the order of 60°).
  • the example device further includes a movable pusher ( 51 ) mounted between the inlet lock ( 5 ) and the horizontal plate ( 50 ).
  • the pusher ( 51 ) is positioned above the horizontal plate ( 50 ), so that the horizontal plate forms a thermal screen protecting the pusher from the heat prevailing underneath the plate when the gasifier is operating.
  • the pusher ( 51 ) may include, for example, a horizontal jack, at the end of which a vertical plate is mounted, which acts as the pusher. When the jack is actuated, the fuel retained on the plate will be pushed by the vertical plate and will drop by gravity into the pyrolysis zone ( 10 ). Metering of the fuel can be achieved by controlling the movement of the jack.
  • FIG. 2 shows schematically a front section of another example gasifier according to the teachings of this disclosure.
  • the movable pusher ( 51 ) includes at least one arm ( 52 ) extending horizontally above the horizontal plate ( 10 ) and mounted rotatably about a second vertical axis (B).
  • This arm can include, for example, a vertical plate.
  • one end of the example arm is connected to a shaft of a motor (M) for rotating the arm.
  • the movable pusher ( 51 , 52 ) is positionable above the horizontal plate ( 50 ), which allows the plate to perform its role of thermal screen when the pusher is effectively positioned above the plate.
  • the pusher can temporarily project beyond the plate when the motor (M) is started, and the pusher can at some point in time be positioned above the plate.
  • the motor (M) is equipped with reduction gearing in order to increase the torque and the precision of the movement transmitted to the first arm.
  • the motor (M) is mounted above the plate so that the plate also forms a thermal screen with respect to the motor.
  • the motor (M) is mounted outside the vessel, in which case the motor shaft passes through the upper part of the vessel via a seal or a sealed bearing and is connected to the first arm (case not shown).
  • the second axis (B) is offset relative to the first axis (A).
  • FIG. 3 shows schematically a cross section of the example gasifier in FIG. 2 .
  • This shows an example of the possible form of the horizontal plate ( 50 ) and arm ( 52 ) of the pusher and how these two elements can be arranged relative to one another.
  • the gasifier includes a motor (M) for driving the at least one arm ( 52 ) of the pusher in rotation about the second axis (B) and first controlling means ( 60 ) suitable for controlling the motor (M) to give a rocking, oscillation or rotating motion to the at least one arm ( 52 ) about the second axis (B).
  • a motor with reversible rotational directions such as, for example, a direct-current motor.
  • the first controlling means ( 60 ) are able to set an initial angular position (P 1 ) as well as an amplitude (A 1 ) of the rocking, oscillation or rotating motion, which allows even more precise control of the transfer of biomass from the plate to the pyrolysis zone.
  • P 1 initial angular position
  • a 1 amplitude of the rocking, oscillation or rotating motion
  • FIG. 4 shows schematically a front section of another example gasifier according to the teachings of this disclosure.
  • the example first vessel ( 4 ) further includes levelling means ( 70 ) suitable for at least partially levelling a top surface ( 80 ) of the bed of biomass in the pyrolysis zone ( 10 ).
  • these levelling means includes for example a horizontal jack whose end is equipped with a scraper.
  • the example scraper is located at the level of the top surface ( 80 ) of the bed of biomass in the pyrolysis zone ( 10 ).
  • the scraper is in the form of a rake that has teeth directed downwards. Actuation of the jack makes it possible to level the top surface ( 80 ) of the bed of biomass.
  • FIG. 5 shows schematically a front section of another example gasifier according to the teachings of this disclosure.
  • the levelling means ( 70 ) comprise at least one levelling arm ( 71 ) extending horizontally at the level of the top surface ( 80 ) of the bed of solid fuel in the pyrolysis zone ( 10 ).
  • the example at least one levelling arm ( 71 ) is mounted rotatably about a third vertical axis (C).
  • the levelling arm can include, for example, a vertical plate and/or a rake with teeth directed downwards.
  • one end of the levelling arm ( 71 ) is connected to a shaft of a motor (M) for rotating the arm ( 71 ).
  • the motor (M) is equipped with reduction gearing in order to increase the torque and the precision of the movement transmitted to the arm ( 71 ). Operation of the motor makes it possible to level the top surface ( 80 ) of the bed of biomass when the example gasifier is in operation.
  • FIG. 6 shows schematically a cross section of the example gasifier in FIG. 5 . This gives a better view of the levelling arm ( 71 ) and its rotary movement.
  • the levelling means includes six arms mounted radially at intervals of 60 degrees around a rotating shaft with axis C.
  • axis B and axis C coincide.
  • the at least one arm ( 52 ) of the pusher and the at least one arm ( 71 ) of the levelling means are mounted on one and the same rotating shaft ( 75 ).
  • FIGS. 7 a and 7 b One such example is presented in FIGS. 7 a and 7 b.
  • a single motor (M 3 ) simultaneously drives the arm ( 52 ) of the pusher and the levelling arm ( 71 ) via a common rotating shaft ( 75 ), which simplifies assembly and therefore makes it less expensive, less bulky and more reliable.
  • the arm ( 52 ) of the pusher and the levelling arm ( 71 ) are, in some examples, mounted in opposition, i.e. with angular offset of 180 degrees, as can be seen more clearly in FIG. 7 b .
  • the common motor (M 3 ) is operated for imparting a rocking or oscillation motion to the arm ( 52 ) and to the arm ( 71 )
  • this can ensure that, during each forward or return movement, the arm ( 71 ) will pass over the biomass previously poured onto the bed ( 80 ) of biomass by the arm ( 52 ) of the pusher. This gives very good equalization of the surface of the bed of biomass in the pyrolysis zone, which improves the pyrolysis reaction.
  • FIGS. 8 a and 8 b show a front section and a cross section, respectively, of another example gasifier according to the teachings of this disclosure.
  • the example plate is formed by a fixed plate ( 50 ) which extends substantially over the whole cross section of the vessel ( 4 ).
  • the plate ( 50 ) is equipped with at least one opening ( 58 ) through which the pusher ( 52 ) can push the fuel ( 2 ) retained by the plate so that the fuel ( 2 ) falls by gravity into the pyrolysis zone ( 10 ).
  • the opening ( 58 ) is offset relative to the means of admission ( 5 ) so that the fuel cannot fall directly into the pyrolysis zone. Otherwise this gasifier is similar to those disclosed above.
  • the motor (M 3 ) in this example, is dispose and operate outside of the vessel ( 4 ) to allow easier access to the motor and so that the motor is not subjected to the conditions prevailing within the vessel (temperature, presence of gases, etc.).
  • example plate and of the example pusher can be envisaged, provided that the plate is able to retain the fuel delivered by the feeding means ( 5 ) and that the pusher ( 52 ) is able to push the retained fuel and cause the fuel to fall by gravity onto the pyrolysis zone ( 10 ).
  • the teachings of this disclosure also relate to a unit for production and combustion of gas, comprising a gasifier as disclosed and/or claimed in the present application.
  • the example unit may be, for example, an assembly that includes a gasifier as disclosed above and an internal-combustion engine, the outlet ( 6 ) of the gasifier being connected to a fuel admission system of the internal-combustion engine.
  • a gasifier of solid carbon fuel ( 2 ) comprising at least one first vertical vessel ( 4 ) and feeding means ( 5 ) for introducing the fuel ( 2 ) into an upper part of the first vessel above a pyrolysis zone ( 10 ), the pyrolysis zone being a zone where the fuel introduced undergoes pyrolysis to produce pyrolysis gases and carbonized fuel.
  • the gasifier also comprises a combustion zone ( 20 ) for burning the pyrolysis gases, a reduction zone ( 30 ) for gasifying the carbonized fuel from the pyrolysis zone ( 10 ) in order to produce synthesis gases and ash, and an outlet ( 6 ) for collecting the synthesis gases.
  • the first vessel ( 4 ) comprises a fixed horizontal plate ( 50 ) mounted between the feeding means ( 5 ) and the pyrolysis zone ( 10 ) so that the fuel introduced is retained there, as well as a movable pusher ( 51 ) mounted between the feeding means ( 5 ) and the plate ( 50 ) for transferring the fuel retained on the plate to the pyrolysis zone ( 10 ).
  • the plate ( 50 ) forms a thermal screen at least partially protecting the feeding means ( 5 ) and the movable pusher ( 51 ) against the high temperatures prevailing in the first vessel ( 4 ) when the latter is in operation.
US14/196,534 2011-09-05 2014-03-04 Gasifier for a solid carbon fuel Abandoned US20140182490A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11180062 2011-09-05
EP11180062.9 2011-09-05
PCT/EP2012/067349 WO2013034608A1 (fr) 2011-09-05 2012-09-05 Gazeifieur de combustible solide carbone

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/067349 Continuation WO2013034608A1 (fr) 2011-09-05 2012-09-05 Gazeifieur de combustible solide carbone

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US (1) US20140182490A1 (ja)
EP (1) EP2753677B1 (ja)
JP (1) JP6344691B2 (ja)
CA (1) CA2845883A1 (ja)
HR (1) HRP20171057T1 (ja)
SI (1) SI2753677T1 (ja)
WO (1) WO2013034608A1 (ja)

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CN104893761A (zh) * 2015-05-12 2015-09-09 新奥科技发展有限公司 一种联产甲烷及轻质焦油的气化炉

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KR102006445B1 (ko) * 2018-04-12 2019-08-01 임승묵 폐기물 및 탄소 자원을 이용하는 상향식 가스화 장치

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US3884397A (en) * 1972-06-15 1975-05-20 Motala Verkstad Ab Apparatus for feeding material to a gas generator

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CA2845883A1 (fr) 2013-03-14
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EP2753677A1 (fr) 2014-07-16
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