EP1329494B1 - Gleichstromflussgaserzeuger - Google Patents

Gleichstromflussgaserzeuger Download PDF

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Publication number
EP1329494B1
EP1329494B1 EP03405016A EP03405016A EP1329494B1 EP 1329494 B1 EP1329494 B1 EP 1329494B1 EP 03405016 A EP03405016 A EP 03405016A EP 03405016 A EP03405016 A EP 03405016A EP 1329494 B1 EP1329494 B1 EP 1329494B1
Authority
EP
European Patent Office
Prior art keywords
gasifier
screw
gasifiers
vertical
gasified
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
EP03405016A
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English (en)
French (fr)
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EP1329494A2 (de
EP1329494A3 (de
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.)
GAGGINI, CARLO
Original Assignee
Gaggini Carlo
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 Gaggini Carlo filed Critical Gaggini Carlo
Publication of EP1329494A2 publication Critical patent/EP1329494A2/de
Publication of EP1329494A3 publication Critical patent/EP1329494A3/de
Application granted granted Critical
Publication of EP1329494B1 publication Critical patent/EP1329494B1/de
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
    • C10J3/34—Grates; Mechanical ash-removing 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
    • C10J3/30—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
    • C10J2200/00—Details of gasification apparatus
    • C10J2200/09—Mechanical details of gasifiers not otherwise provided for, e.g. sealing means
    • 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
    • C10J2200/158—Screws
    • 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
    • C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
    • C10J2300/1807—Recycle loops, e.g. gas, solids, heating medium, water

Definitions

  • the present invention relates to a co-current gasifier as described in the prologue of claim 1.
  • the dimensions of the fireplace must be adapted to the average particle size of the fuel to be gasified.
  • Materials of small particle size such as vegetable, household or industrial remnants, prepared for gasification, (dried, shredded, homogenized to obtain a fuel whose properties are regular) therefore require, according to the condition mentioned above, that the dimensions of the home are also limited, thus limiting the power of such gasifiers.
  • the document US-A-4,987,115 discloses a co-current gasifier with a feed screw for fresh equipment to be gasified, with a substantially vertical auger carrying material to gasify from bottom to top, with a hearth disposed in the upper part of the outlet of the worm, with a gasification chamber disposed above the hearth, the hearth being constituted by the total circular section of the substantially vertical screw carrying the material and that the primary combustion air reaches the fireplace from the outside of its circular delimitation.
  • the document EP-A-0 565 935 describes a gas generator that contains a material circulation device that has already passed through the furnace and the gasification chamber and is not completely gasified, which carries this material into the fresh material to be gasified, to pass another times through the home.
  • the document FR-A-2 520 375 describes the modular coupling of different gasogens.
  • the present invention proposes to eliminate these drawbacks of known co-current gasogen technology, so as to be able to produce gas generators of medium and high power (of the order of at least 1 MWel) which guarantee the production of a gas without tars, dioxins and furans, in quantity and quality respectively constant concerning these perfect parameters, and to create, among other things, the ideal conditions for the use of synthesis gas for the production of electric energy supplied by engines internal combustion.
  • Another object of the invention is to prepare the ideal conditions for the manufacture of co-current gasifiers of varying power, as required, by providing modules of elements that can be coupled mechanically and / or activated as required.
  • a co-current gasifier which has the characteristic features of the part described in claim 1.
  • the hearth is constituted by the entire total circular surface of the vertical auger carrying the material from the bottom to the top, all the material is brought to a temperature of at least 1200 ° C, which is necessary and sufficient to ensure the "craking" of tars, etc.
  • the pos. 1 of the same fig. represents a worm for feeding fresh equipment. It transports the material from a feed hopper (better visible in Fig. 3) to bring it from the turns of a vertical worm 2 which carries this material from bottom to top.
  • the worm 2 is of course in a cylindrical housing 3, possibly with all the elements known to each person skilled in the art, elements intended to promote the correct transport of equipment from the bottom upwards.
  • the rotation shaft 4 of the screw 2 may be hollow, as shown in FIG. 1, for a reason that will be explained further.
  • the shaft 4 of the screw 2 is driven by a gear 5 and a helical gear 6.
  • the feed screw of the material 1, the cylindrical housing 3, the vertical shaft 4 of the vertical screw 2, as well as the gears 5 and 6 are supported respectively fixed in respectively to a frame 7, provided with the necessary housing, which can be equipped, as in the case of rotating shafts, linear or rotary ball bearings.
  • a hearth is created, according to the invention, understood by that, that in this zone, in the form of a solid disc, all the material that crosses it is forced to pass into a combustion zone, where it is heated to a temperature of at least 1200 ° C for a sufficient time.
  • a temperature of at least 1200 ° C for a sufficient time.
  • the outside air comes supplied by means of a fan (not indicated) and a feed tube 8, to a circular chamber 9 surrounding the upper edge of the housing 2 at a point located above the highest point of the turns of the vertical screw 2, where the material transported to gasify form a compact column. If the diameter of the vertical screw 2 does not exceed a certain dimension, mainly depending on the average particle size of the material to be gasified and preferably located, for optimum operation of the gasogen according to the present invention and for the combustion of wood chips.
  • the supply of air only from the outside can be sufficient to ensure the necessary and regular combustion on the whole surface of the hearth.
  • a primary combustion air supply to the lower part of the hearth that is to say to the lower central part of the disc which form the focus: to achieve this variant of the combustion air supply, it will suffice to provide that the shaft 4 of the vertical screw is, as already shown in FIG. 1, a hollow shaft fed from below, by means of the supply tube 10, air which passes through the shaft on which is fixed the gear 5, which shaft is hollow.
  • combustion air supply conditions in the furnace are particularly difficult (due for example to a relatively small particle size of the material to be gasified with respect to the diameter of the furnace, respectively of the vertical screw 2, or at a higher flow rate of the material to be gasified etc, ...) it may be useful, and may be necessary, to bring combustion air both from the outer part of the hearth and its lower part, or to its outer edge, or its lower central surface through the tubes 8 and 10. It is important that the material passes through the fireplace, as a compact column that will be heated in its entirety at a temperature above 1200 ° C for enough time.
  • a gasification chamber 11 disposed above the hearth, whose function is described in detail in the document EP-0565935 and that there is provided a circulation device 12 of the material which has already passed through the hearth and the gasification chamber 11.
  • a circulation device 12 which can assume various forms and which will be described in more detail, in its constructive and operating part, in a preferred embodiment, when the variants shown in FIGS. from 2 to 5, form of execution which allows to postpone the equipment to gasify in the fresh material not yet gasified, to pass it again through the hearth.
  • an electrical resistance 13 which serves to heat the primary combustion air for the ignition of the cold gasogen (resistance that will be put out of service at the time when the gasifier is operating normally) and the chamber of 14 in the expansion chamber 14 the flow rate of the product gas decreases and becomes more homogeneous before being conveyed through the outlet tube 15 to the consumer devices (boiler or engine etc, ,,,).
  • the gasification chamber 11 inside which a high temperature is desired for reasons repeated several times, is thermally insulated by a cushion of refractory insulating material 16.
  • Figures 2, 3 and 4 show precisely the possibility of coupling four gasogens and, in this regard, it should be mentioned that two gasogens put together, one against the other, as can be seen in the section of the fig. . 2, constitute an ideal basic module for the combination of such multiple gasifiers.
  • the right part of fig. 2 is perfectly equal and inverse to the one on the right.
  • the elements shown in fig. 2 are therefore exactly the same as those described in FIG. 1 and are no longer described separately.
  • the advantage of the combination of two coupled gas generators to form an ideal basic module lies in the fact that the feed screw of the material 1 and the helical gear 6 of the supply of the vertical screws 2 and 2 ', both horizontal and parallel to each other, can serve optimally to feed the two coupled gas generators, which greatly simplifies the construction of the device.
  • the device for rotating the screws 2 and 2 ' comprises, in the variant of FIG.
  • the feed screw 1 of the fresh material - analogously as described for the helical gear shaft 6 - is arranged in the vertical plane of symmetry of each ideal basic module of two coupled gas generators and that it even extends along the entire length of the gasification apparatus, collectively supplying all the gasifiers constituting said apparatus.
  • Figs. 1 to 4 is a particularly preferred form of the circulation device 12, 12 'of the material which has already passed through the furnace and gasification chambers 11, 11'.
  • a device comprises a horizontal evacuation screw 19, 19 'for each gasifier, disposed above the gasification chambers 11, 11', respectively between the gasification chambers 11, 11 'and the expansion chamber 14.
  • discharge screw 19,19 'of each gasifier whose axis is perpendicular to that of the feed screw 1, pushes the pyrolysed material (coal) and / or not yet completely gasified outside the room of gasification 11, 11 'of the gasifier and returns it to the area where the worm 2 or 2' is located.
  • the material to be circulated comes mixed with the fresh material fed by the feed screw 1 and passes through a hearth of another gasifier.
  • fig. 2 is shown a further detail, relating to the module formed by the coupling of two gasifiers, which shows how the primary combustion air passing through the tube 10 can be preheated, and cool said screw before entering the trees 4, 4 'of said gasifiers.
  • the air is pulsed by a fan (not shown) through the tube 20 on which are fixed the worm 19, 19 'of evacuation of the two gas producers composing the ideal basic module.
  • the combustion air is heated by conduction by the gas which rises towards the expansion chamber 14 and licks the tube 20.
  • the worm horizontal evacuation 19, 19 'of the two coupled gasogens, composing an ideal basic module move the circulating material as shown in Figs. 2 and 3.
  • the horizontal evacuation screws 19, 19 'of the two coupled gas generators forming an ideal basic module when they rotate in the normal direction, move the circulation material, towards the center of the module, in a vertical channel, to through which the circulating material descends on the feed screw of the fresh material 1.
  • Fig. 5 shows a later variant of two coupled gasifiers to form an ideal base module, the advantage of which is to reduce the bulk, especially in the lower part of the gasifier.
  • the axes of the two screws 25,26 of the two gasogens coupled to form an ideal basic module form between them an angle ⁇ of between 0 and 20 °.
  • the vertical screws 2, 2 ' are defined as being “substantially" vertical, but a slight inclination can not be excluded from the scope of the invention.
  • the gasifier according to the invention also offers the advantage when it is combined with other gasifiers to form a gasification apparatus of greater power, if it is intended to operate individually the essentially vertical screws 2, 2 'etc. it is possible, in a device composed of several gasifiers, to maintain in function only those who really serve at each moment, to adapt the apparatus to the energy productions actually necessary, respectively to the availability of the material to be gasified. For this purpose, it is sufficient to provide that in a solution such as that shown in FIGS. 2 to 4, the gears 5, 5 'etc, individual screws 2, 2' etc, are connected with the respective shafts by a mechanical coupling or any other system, which allows to release them when it is desired to stop the operation of the gasogen corresponding. Another possibility, shown in the embodiment of FIG.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Control Of Electrical Variables (AREA)
  • Emergency Protection Circuit Devices (AREA)

Claims (12)

  1. Gleichstromfluss-Gaserzeuger mit einer Endlos-Schraube (1) zur Einspeisung frischen Materials zur Vergasung, mit einer im Wesentlichen senkrecht stehenden endlosen Förderschraube (2), welche das zu vergasende Material von unten nach oben fördert, mit einer Brennkammer im oberen Teil des Ausgangs der endlosen Förderschraube (2), mit einer über der Brennkammer angeordneten Vergasungskammer (11), sowie mit einer Fördervorrichtung (12) für das Material, welches die Brennkammer und die Vergasungskammer bereits durchlaufen hat und dabei nicht vollständig vergast wurde, und welches nochmals durch die Brennkammer geschickt werden soll, wobei sich die Brennkammer über den ganzen Querschnitt der im Wesentlichen senkrecht stehenden Förderschraube (2) erstreckt und die Primärluft für die Verbrennung von ausserhalb seines kreisrunden Mantels und/oder im Zentrum der genannten Brennkammer in die Brennkammer eintritt,
    dadurch gekennzeichnet, dass
    mindestens zwei Gaserzeuger Seite an Seite miteinander verbunden sind und mit einem gemeinsamen Drehmechanismus für die im Wesentlichen senkrecht stehenden Förderschrauben (2, 2') versehen sind.
  2. Gleichstromfluss-Gaserzeuger gemäss dem Patentanspruch 1,
    dadurch gekennzeichnet, dass
    zwei zusammengebaute Gaserzeuger ein ideales Grundmodul bilden, das seinerseits mit einem oder mehreren gleichartigen Modulen zu einem Gaserzeuger-Apparat zusammengebaut werden kann, das aus einer beliebigen Anzahl von Gaserzeugereinheiten besteht.
  3. Gleichstromfluss-Gaserzeuger gemäss dem Patentanspruch 2,
    dadurch gekennzeichnet, dass
    die senkrecht stehenden Förderschrauben aller Gaserzeugereinheiten durch eine gemeinsame Drehantriebsvorrichtung angetrieben werden.
  4. Gleichstromfluss-Gaserzeuger gemäss einem der Patentansprüche 1 - 3,
    dadurch gekennzeichnet, dass
    die Drehantriebsvorrichtung aus einer horizontal liegenden Antriebswelle (6) besteht, die in der Symmetrieebene jedes Paars von Gaserzeugereinheiten angeordnet und mit einem Schneckengetriebe-Zahnrad für jedes Paar von Vergasereinheiten versehen ist, und das ein auf jeder der im Wesentlichen senkrecht stehenden Förderschrauben (2, 2') jeder Gaserzeugereinheit sitzendes Zahnradritzel antreibt.
  5. Gleichstromfluss-Gaserzeuger gemäss einem der Patentansprüche 2 - 4,
    dadurch gekennzeichnet, dass
    die Förderschraube (1) für das frische Material in der vertikalen Symmetrieebene jedes von zwei zusammengebauten Gaserzeugern gebildeten idealen Grundmoduls angeordnet ist, sich über die ganze Länge der Gaserzeuger-Apparatur erstreckt, und gemeinsam alle Gaserzeuger-Einheiten speist, welche die Gaserzeuger-Apparatur bilden.
  6. Gleichstromfluss-Gaserzeuger gemäss dem Patentanspruch 1,
    dadurch gekennzeichnet, dass
    die Fördervorrichtung (12, 12') für das Material, welches die Brennkammer und die Vergasungskammer bereits durchlaufen hat, eine horizontal angeordnete endlose Ausschaffungs-Förderschraube umfasst, welche das noch nicht vollständig vergaste Material aus der Vergasungskammer der Gaserzeugers ausstösst und es in die Wirkungszone einer der im Wesentlichen senkrecht stehenden Förderschrauben (2, 2') zurückführt, welche das Material von unten nach oben fördert.
  7. Gleichstromfluss-Gaserzeuger gemäss dem Patentanspruch 6 und einem der Patentansprüche 1-4,
    dadurch gekennzeichnet, dass
    die horizontal angeordneten Ausschaffungs-Förderschrauben (19, 19) der beiden zusammengebauten Gaserzeuger-Einheiten, die ein ideales Grundmodul bilden, koaxial angeordnet sind und das zu fördernde Material in einander entgegengesetzten Richtungen stossen.
  8. Gleichstromfluss-Gaserzeuger gemäss dem Patentanspruch 7,
    dadurch gekennzeichnet, dass
    die horizontal angeordneten Ausschaffungs-Förderschrauben (19, 19) der beiden zusammengebauten Gaserzeuger-Einheiten, die ein ideales Grundmodul bilden, in ihrer normalen Drehrichtung das zu fördernde Material zur Mitte des Grundmoduls hin fördern, wo eine Öffnung (21) vorgesehen ist, durch welche es durch einen vertikalen Kanal in den Wirkungsbereich einer Speiseschraube (1) für frisches Material geleitet wird.
  9. Gleichstromfluss-Gaserzeuger gemäss dem Patentanspruch 8,
    dadurch gekennzeichnet, dass
    wenn der Drehsinn der horizontal angeordneten Ausschaffungs-Förderschrauben (19, 19) der beiden zusammengebauten Gaserzeuger-Einheiten, die ein ideales Grundmodul bilden, umgekehrt wird, diese Förderschrauben das auszustossende Material bzw. unverbrennbares Material aus dem Gaserzeuger-Apparat hinausstossen, von wo es entfernt wird.
  10. Gleichstromfluss-Gaserzeuger gemäss den Patentansprüchen 1 - 4,
    dadurch gekennzeichnet, dass
    mindestens zwei ideale Grundmodule, vorzugsweise deren vier oder mehr zusammengebaut sind.
  11. Gleichstromfluss-Gaserzeuger gemäss dem Patentanspruch 1,
    dadurch gekennzeichnet, dass
    der Durchmesser der im Wesentlichen senkrecht stehenden, das zu vergasende Material von unten nach oben fördernde Förderschraube zwischen 100 und 200 Millimeter oder mehr liegt.
  12. Gleichstromfluss-Gaserzeuger gemäss einem der Patentansprüche 1 - 4,
    dadurch gekennzeichnet, dass
    die im Wesentlichen senkrecht stehenden Achsen der beiden Förderschrauben (25, 25') der beiden zu einem idealen Grundmodul zusammengebauten Gaserzeuger-Einheiten miteinander einen Winkel α von 0 bis 20° einschliessen.
EP03405016A 2002-01-18 2003-01-17 Gleichstromflussgaserzeuger Expired - Lifetime EP1329494B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH752002 2002-01-18
CH752002 2002-01-18

Publications (3)

Publication Number Publication Date
EP1329494A2 EP1329494A2 (de) 2003-07-23
EP1329494A3 EP1329494A3 (de) 2004-03-17
EP1329494B1 true EP1329494B1 (de) 2007-09-12

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EP03405016A Expired - Lifetime EP1329494B1 (de) 2002-01-18 2003-01-17 Gleichstromflussgaserzeuger

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EP (1) EP1329494B1 (de)
AT (1) ATE373068T1 (de)
DE (1) DE60316206T2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1035829C2 (nl) * 2008-08-15 2009-08-06 Jacobus Anna Joseph Hubertus Mohr Inrichting voor het produceren van houtgas als alternatieve brandstofvoorziening voor verbrandingsmotoren (houtgasgenerator).

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2520375A1 (fr) * 1982-01-26 1983-07-29 Iakovenko Marinitch Vladimir Appareil modulaire de gazeification des matieres combustibles
DE8328140U1 (de) * 1983-09-28 1991-04-25 Michel-Kim, Herwig, 1000 Berlin Reaktorvorrichtung zur Erzeugung von Generatorgas aus brennbaren Abfallprodukten
DE3509263A1 (de) * 1985-03-12 1986-10-16 Silica Gel GmbH Adsorptions-Technik, Apparatebau, 1000 Berlin Verfahren und vorrichtung zur regelung der brennstoffzufuhr eines unterschubvergasers
DE3732867A1 (de) * 1987-09-25 1989-04-06 Michel Kim Herwig Verfahren und vorrichtung zum erzeugen von generatorgas und aktivierter kohle aus festen brennstoffen
CH685244A5 (it) * 1992-04-10 1995-05-15 Poretti & Gaggini S A Gasogeno ad equicorrente.

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DE60316206T2 (de) 2008-06-05
ATE373068T1 (de) 2007-09-15
EP1329494A2 (de) 2003-07-23
DE60316206D1 (de) 2007-10-25
EP1329494A3 (de) 2004-03-17

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