SE455423B - SETTING OF STRAW OR SIMILAR STRAMATERIAL MAKING GENERATOR GAS, AND DEVICE FOR EXTENDING THE SET - Google Patents

SETTING OF STRAW OR SIMILAR STRAMATERIAL MAKING GENERATOR GAS, AND DEVICE FOR EXTENDING THE SET

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Publication number
SE455423B
SE455423B SE8702233A SE8702233A SE455423B SE 455423 B SE455423 B SE 455423B SE 8702233 A SE8702233 A SE 8702233A SE 8702233 A SE8702233 A SE 8702233A SE 455423 B SE455423 B SE 455423B
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SE
Sweden
Prior art keywords
pyrolysis
gas
straw
space
container
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Application number
SE8702233A
Other languages
Swedish (sv)
Other versions
SE8702233D0 (en
Inventor
John Munck Af Rosenschold
Original Assignee
John Munck Af Rosenschold
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Filing date
Publication date
Application filed by John Munck Af Rosenschold filed Critical John Munck Af Rosenschold
Priority to SE8702233A priority Critical patent/SE455423B/en
Publication of SE8702233D0 publication Critical patent/SE8702233D0/en
Priority to PCT/SE1988/000256 priority patent/WO1988009364A1/en
Publication of SE455423B publication Critical patent/SE455423B/en

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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
    • C10J3/58—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels combined with pre-distillation of the fuel
    • C10J3/60—Processes
    • C10J3/64—Processes with decomposition of the distillation products
    • C10J3/66—Processes with decomposition of the distillation products by introducing them into the gasification zone
    • 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
    • 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
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/48—Apparatus; Plants
    • C10J3/485—Entrained flow gasifiers
    • 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
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
    • 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
    • C10J3/74—Construction of shells or jackets
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/10—Feedstock materials
    • C10G2300/1011—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
    • 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
    • C10J2300/0973—Water
    • 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
    • C10J2300/1861—Heat exchange between at least two process streams
    • C10J2300/1884—Heat exchange between at least two process streams with one stream being synthesis gas
    • 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
    • C10J2300/1861—Heat exchange between at least two process streams
    • C10J2300/1892—Heat exchange between at least two process streams with one stream being water/steam
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P30/00—Technologies relating to oil refining and petrochemical industry
    • Y02P30/20—Technologies relating to oil refining and petrochemical industry using bio-feedstock

Description

455 423 Flis-luftsuspensionen undergàr därefter en s.k. flash- pyrolys, dvs en pyrolys med i det närmaste explosiv karaktär i pyrolyskammare. Pyrolyskamrarna eller -kanalerna har företrädesvis en uppåt successivt ökande tvärsnittsarea. Den i dolomitbädden inmatade gasen tillföres_sekundär1uft och- genom förbränning av luften erhålles den värme som C02- och H20-reaktionerna fordrar. Temperaturen i övre delen av dolomit- bädden blir hög och åtminstone i bäddens undre halva bör temperaturen hållas vid åtminstone cza BOOOC för att en effektiv tjärnedbrytning skall erhållas. Vid förbränningen alstrad aska upptages eventuellt av dolomiten, som kontinuer- ligt eller i bestämda intervall ersättes med färsk dolomit. 455 423 The chip air suspension then undergoes a so-called flash pyrolysis, ie a pyrolysis with an almost explosive character in pyrolysis chambers. The pyrolysis chambers or channels preferably have an upwardly increasing cross-sectional area. The gas fed into the dolomite bed is supplied with secondary air and by combustion of the air the heat required by the CO 2 and H 2 O reactions is obtained. The temperature in the upper part of the dolomite bed becomes high and at least in the lower half of the bed the temperature should be kept at at least about BOOOC in order to obtain an effective pond decomposition. Ash generated during combustion may be taken up by the dolomite, which is replaced continuously or at certain intervals with fresh dolomite.

Uppfinningen beskrives närmare i anslutning till bifogade ritning, som mycket förenklat visar en anläggning med en gas- generator enligt uppfinningen.The invention is described in more detail in connection with the accompanying drawing, which very simply shows a plant with a gas generator according to the invention.

På ritningen visas gengasgeneratorn bestå av en behållare l med en yttre värmeisolering 2 av exempelvis mineralull.The drawing shows the gas generator generating consisting of a container 1 with an external thermal insulation 2 of, for example, mineral wool.

Behållaren l är utformad som en cylinder med en övre öppning 3, vilken har en på ritningen mycket förenklat visad sluss H, vilken medelst här icke visade drivorgan kan öppnas och stängas för att i öppet läge medgiva inmatning av dolomit från ett icke visat förråd till ett inmatningsschakt 5 med en utmatningsöpp- ning G. Inmatningsschaktets 5 öppning 6 omges av ett rörmagasin 8, som på ritningen visas bestå av två stympade koner med baserna vända mot varandra och som har dessa baser förenade med varandra. Magasinet 8 kan bestå av stål, ett keramiskt material eller annat mot nötning och värme motståndskraftigt material. Den undre konens 8' koniska vägg har ett flertal genomgående öppningar 9, genom vilka den genererade gasen, gengasen, kan avgå och dess nedre, öppna ände ansluter till en öppning 10, som kan frilägges respektive tillslutas åt- minstone väsentligen gastätt medelst en sluss ll av samma slag som slussen H. Behållarens 1 undre parti är försett med inmatningskanaler 12 för varm primärluft till ett ringformat utrymme l3 mellan den övre konen 8" och behâllarens l inre 455 42.3 vägg, av vilka kanaler endast en visas och vilka är anordnade runt hela behållaren 1. Genom att variera antalet kanaler 12 kan generatorns kapacitet också varieras. Det ringformade ut- rymmet 13 är medelst i huvudsak vertikala, icke visade väggar uppdelat i från varandra skilda pyrolyskammare, vilka vardera tillföres halmflis och luft. I varje pyrolyskammare utmynnar åtminstone en kanal lh för förvärmd sekundärluft. Det ringformade utrymmets 13 horisontella av de nämnda väggarna uppdelade snittyta kommer sålunda att kontinuerligt öka och denna ökning krävs, eftersom gasmängden successivt ökar under pyrolysen.The container 1 is designed as a cylinder with an upper opening 3, which has a lock H shown very simply in the drawing, which by means of drive means not shown here can be opened and closed to allow in the open position feeding of dolomite from a store (not shown) to a feed shaft 5 with a discharge opening G. The opening 6 of the feed shaft 5 is surrounded by a tube magazine 8, which in the drawing is shown to consist of two truncated cones with the bases facing each other and having these bases connected to each other. The magazine 8 may consist of steel, a ceramic material or other material resistant to abrasion and heat. The conical wall of the lower cone 8 'has a plurality of through openings 9, through which the generated gas, the gas, can escape and its lower, open end connects to an opening 10, which can be exposed or closed at least substantially gas-tight by means of a lock 11 of the same kind as the lock H. The lower portion of the container 1 is provided with supply ducts 12 for hot primary air to an annular space 13 between the upper cone 8 "and the inner wall 455 42.3 of the container 1, of which channels only one is shown and which are arranged around the whole container 1. By varying the number of channels 12, the capacity of the generator can also be varied.The annular space 13 is by means of substantially vertical, not shown walls divided into spaced pyrolysis chambers, each of which is supplied with straw chips and air.In each pyrolysis chamber at least one duct 1h for preheated secondary air The horizontal section of the annular space 13 divided by the said walls will thus be cone continuously increase and this increase is required, as the amount of gas gradually increases during the pyrolysis.

Det är givetvis möjligt att åstadkomma denna ökning på olika sätt, exempelvis genom att utforma behållaren 1 som en kon och det centrala röret 8 som en rät cylinder. Ovanför kanalerna 12, som i det visade exemplet avskiljes från ett undre gasut- matningsutrymme 18 medelst en ringformad skiljevägg 19 mellan behållarens 1 inre vägg och röret 8 finns åtminstone en inmat- níngskanal 15 i varje sektion för halmflisfraktionen, vilken tillföres kanalen medelst en icke visad skruvtransportör_eller annat lämpligt transportorgan. På ritningen visas en i varje sektion i utrymmet 13 något ovanför tillhörande kanal 12 anord- nad gasbrännare 16, som eventuellt kan anordnas för att få en mycket snabb pyrolysreaktion. I behâllarens 1 undre del finnes en utmatningskanal 17 för den bildade gengasen, vilken ledes till en cyklon 27 för avlägsnandet av partiklar av olika slag i gasen. Den utmatade gasen, som har en temperatur av storleks- ordningen 800°C kyls i en värmeväxlare 20 och avger värme till exempelvis returvattnet i ett varmvattensystem och ledes i det_ visade utföringsexemplet genom ett filter 21 för ytterligare rening av gasen. Kylningen får givetvis inte ske i sådan ut- sträckning att en kondensering av vattenånga i gasen uppstår såvida inte en kondensupptagare anordnas. Gasen ledes sedan till en motor 22, som exempelvis driver en elektrisk generator 23.It is of course possible to achieve this increase in different ways, for example by designing the container 1 as a cone and the central tube 8 as a straight cylinder. Above the channels 12, which in the example shown are separated from a lower gas discharge space 18 by means of an annular partition 19 between the inner wall of the container 1 and the pipe 8, there is at least one feed channel 15 in each section of the straw chip fraction, which is fed to the channel by a screw conveyor_or other suitable conveying means. The drawing shows a gas burner 16 arranged in each section of the space 13 slightly above the associated channel 12, which can optionally be arranged to obtain a very fast pyrolysis reaction. In the lower part of the container 1 there is a discharge channel 17 for the formed gas, which is led to a cyclone 27 for the removal of particles of various kinds in the gas. The discharged gas, which has a temperature of the order of 800 ° C, is cooled in a heat exchanger 20 and gives off heat to, for example, the return water in a hot water system and is passed in the embodiment shown through a filter 21 for further purification of the gas. The cooling must of course not take place to such an extent that a condensation of water vapor in the gas occurs unless a condensate collector is arranged. The gas is then passed to a motor 22, which for example drives an electric generator 23.

Motorns avgaser, som håller en temperatur av exempelvis H50-SOOOC ledes till en värmeväxlare ZH, som värmer processluft till en temperatur av exempelvis H00°C, vilken i form av 455 423 primärluft inmatas via en ledning 25 till respektive in- matningskanal 12 och strömmar uppåt i tillhörande pyrolyskammare i det ringformade utrymmet 13. Gasen sugs efter pyrolysen in genom rörets 8 övre öppning 26 genom den sugverkan, som uppstår då motorn 22 arbetar. De kylda avgaserna från motorn 22, som efter passagen av vårmeväxlaren ZH fortfarande innehåller värme- energi kan ledas genom en värmeväxlare 28 för uttagning av värme till exempelvis ett vattenburet värmesystem eller också utnyttjas för förvämning av den till behållaren 1 och utrymmet 13 inmatade luft-flissuspensionen. Förvärmningen av halmflisen sker lämpligen i första hand medelst de varma avgaserna från värmeväxlaren 28, vilka ledes genom flismagasinet.The engine exhaust gases, which maintain a temperature of, for example, H50-SOOOC, are led to a heat exchanger ZH, which heats process air to a temperature of, for example, H00 ° C, which in the form of 455,423 primary air is fed via a line 25 to the respective supply duct 12 and flows upwards in the associated pyrolysis chamber in the annular space 13. After the pyrolysis, the gas is sucked in through the upper opening 26 of the tube 8 through the suction effect which occurs when the engine 22 operates. The cooled exhaust gases from the engine 22, which after the passage of the heat exchanger ZH still contain heat energy, can be passed through a heat exchanger 28 for extracting heat to, for example, a water-borne heating system or also used to preheat the air-chip suspension fed to the container 1 and the space 13. . The preheating of the straw chips suitably takes place primarily by means of the hot exhaust gases from the heat exchanger 28, which are passed through the chip magazine.

Det antages att reaktorröret 8 är fyllt upp till öppningen 6 med dolomitsten med en storlek av exempelvis 10-100 mm, vilken sten bildar en bädd ner till slussen ll. De båda tätande slussarna U och ll är stängda.Såsom nämnts inmatas halmflis- fraktionen, som eventuellt är förvärmd, genom inmatningsöpp- ningarna 15 och för att, i den händelse primärluften inte håller önskad temperatur, åstadkomma flashpyrolys tändes gas- brännaren 15, som dels genom ejektorverkan ökar insugningen av primärluft genom kanalerna 12 och dels antänder halmflisen.It is assumed that the reactor tube 8 is filled up to the opening 6 with dolomite stone with a size of, for example, 10-100 mm, which stone forms a bed down to the lock 11. The two sealing locks U and II are closed. As mentioned, the straw chip fraction, which may be preheated, is fed through the feed openings 15 and in order, in the event that the primary air does not maintain the desired temperature, to cause flash pyrolysis, the gas burner 15 is turned on. through the ejector action, the suction of primary air through the ducts 12 increases and partly the straw chips ignite.

Flisen fångas upp av luftströmmen. Temperaturen stiger snabbt i den uppåtgâende turbulenta strömmen och det uppstående pyrolys- förloppet blir exotermiskt och en stark oxidation sker. Den kontinuerligt ökande pyrolysreaktionen ökar gashastigheten så, att halmflisen rycks med gasströmmen medan den alltmer förkolas.The chips are caught by the air flow. The temperature rises rapidly in the ascending turbulent stream and the resulting pyrolysis process becomes exothermic and a strong oxidation takes place. The continuously increasing pyrolysis reaction increases the gas velocity so that the straw chips are pulled with the gas stream while it is increasingly charred.

I den övre delen i pyrolyszonen i det sektionerade utrymmet 13 övergår flisen till träkolsflingor, vilka sugs ner i det centrala röret 8 till dolomitbädden. I dolomitbädden hålles på grund av pyrolysen och genom inmatningen av förvärmd sekundärluft genom öppningar lä i varje sektion en temperatur av åtminstone cza 900°C (flamtemperatur cza l.H00°C). förbränningen av sekundär- luften medför den värme som krävs för reduktionen av träkols- flingorna inne i dolomitbädden och den önskade termiska krack- ningen av vid pyrolysen förutom CO, C02 och H20 alstrad tjära omformas helt eller åtminstone i väsentlig utsträckning till brännbara gaser. 455 423 Pyrolysförloppet försiggår explosionsartat i den angivna gasgeneratorn och utnyttjandet av ett dolomitfyllt reaktionsrör eliminerar eller minskar tjärhalten i den avgående gasen och möjliggör användning av gasen i en motor.In the upper part of the pyrolysis zone in the sectioned space 13, the chips are transferred to charcoal flakes, which are sucked down in the central pipe 8 to the dolomite bed. Due to the pyrolysis and the introduction of preheated secondary air through openings, a temperature of at least about 900 ° C in each section is maintained in the dolomite bed (flame temperature about 100.00 C). the combustion of the secondary air causes the heat required for the reduction of the charcoal flakes inside the dolomite bed and the desired thermal cracking of the tar produced during the pyrolysis in addition to CO, CO 2 and H 2 O is completely or at least substantially converted to combustible gases. 455 423 The pyrolysis process takes place explosively in the specified gas generator and the use of a dolomite-filled reaction tube eliminates or reduces the tar content of the exhaust gas and enables the use of the gas in an engine.

Claims (7)

455 423 E P A T I N T K R A V455 423 E P A T I N T K R A V 1. l. Sätt att av halm eller liknande stråmateríal genom pyro- lys av halmen framställa generatorgas, k ä n n e t e c k - n a t därav, att torr halm males för bildandet av en flis- fraktion och en mjölfraktion, vilken flisfraktíon är suspender- bar i en luftström, att flisfraktionen avskiljes från mjöl- fraktionen och tillföres en uppátgående primärluftström med en temperatur av åtminstone cza UOOOC i åtminstone en pyrolys- kammare med en övre utloppsöppníng, vilken luftström bíbríngas ett turbulent strömningstillstånd och vilken pyrolyskammare med en väggyta står i värmeväxlande kontakt med en reaktions- kammare, innehållande en dolomitbädd, att den inmatade flis- fraktionen antändes och pyrolyseras samt att den vid pyrolysen erhållna gasen efter tillsats av förvärmd sekundärluft utmatas genom pyrolyskammarens utloppsöppning och genom en övre öpp- ning på reaktionskammaren och bríngas att strömma nedåt genom dolomítbädden, vilkens övre del hålles på en sådan temperatur att en reaktion mellan C, H20 och C02 äger rum för bildande av brännbara gaser och vilkens undre del hålles på en tempera- tur av åtminstone cza 80000 för omvandling av i gasen ingående tjära till brännbar gas.1. l. A method of producing generator gas from straw or similar straw material by pyrolysis of the straw, characterized in that dry straw is ground to form a chip fraction and a flour fraction, which chip fraction is suspensible in a air stream, that the chip fraction is separated from the flour fraction and fed to an ascending primary air stream with a temperature of at least about 1000 ° C in at least one pyrolysis chamber with an upper outlet opening, which air stream is given a turbulent flow state and which pyrolysis chamber is in contact with a wall reaction chamber, containing a dolomite bed, that the fed chip fraction is ignited and pyrolyzed and that the gas obtained in the pyrolysis after addition of preheated secondary air is discharged through the outlet opening of the pyrolysis chamber and through an upper opening of the reaction chamber to the upper part of which is kept at such a temperature that a reaction between C, H 2 O and CO 2 takes place for the formation of combustible gases and the lower part of which is kept at a temperature of at least about 80,000 for the conversion of tar contained in the gas into combustible gas. 2. Sätt enligt krav 1, k ä n n e t e c k n a t därav, att förvärmningen av primärluft och sekundärluft sker medelst från en av den alstrade gasen driven motors avgaser.2. A method according to claim 1, characterized in that the preheating of primary air and secondary air takes place by means of an exhaust gases of an engine driven by the generated gas. 3. Sätt enligt krav 2, k ä_n n e t e c k n a t därav, att halmflisfraktionen förvärmes och omgives medelst nämnda, praktiskt inerta avgaser.3. A method according to claim 2, characterized in that the straw chip fraction is preheated and surrounded by said, practically inert exhaust gases. 4. H. Anordning för att utöva sättet enligt krav 1 och alstra generatorgas genom pyrolysering av en halmflisfraktíon, k ä n n e t e c k n a d därav, att den innefattar en värme- isolerad behållare (1) med ett centralt rör (8), vilket mellan sig och behållarens (1) inre vägg bildar åtminstone ett pyrolysutrymme (l3)och vilket rör (1) har en övre öppen ände 455 42ä för tillförsel av dolomit till rörets (8) inre och inmatning av i pyrolysutrymmet (13) bildad gas och vilket rör har en nedre ände (8'), som är skild från pyrolysutrymmet (13) och försedd med utloppsöppningar (9) för alstrad generatorgas, att be- hållaren (1) i sin undre del ovanför nämnda nedre ände på' röret (8) har ett inlopp (15) för halmflisfraktionen till pyrolysutrymmet och ett därunder liggande inlopp (19) för primärluft, ett i behållarens övre del anordnat inlopp (lä) för sekundärgas till pyrolysutrymmet samt i sin undre, från pyrolysutrymmet (13) skilda del ett utlopp (17) för generator- gas samt att uppvärmningsorgan (22,2U) är anordnade att upp- värma primärluften till en temperatur av åtminstone UOOOC innan den inmatas till pyrolysutrymmet.H. Device for practicing the method according to claim 1 and generating generator gas by pyrolysis of a straw chip fraction, characterized in that it comprises a heat-insulated container (1) with a central tube (8), which between it and the container (1) inner wall forms at least one pyrolysis space (13) and which tube (1) has an upper open end 455 42a for supplying dolomite to the interior of the tube (8) and feeding gas formed in the pyrolysis space (13) and which tube has a lower end (8 '), which is separate from the pyrolysis space (13) and provided with outlet openings (9) for generated generator gas, that the container (1) in its lower part above said lower end of the' pipe (8) has an inlet (15) for the straw chip fraction to the pyrolysis space and an underlying inlet (19) for primary air, an inlet (shelter) for secondary gas to the pyrolysis space arranged in the upper part of the container and in its lower part an outlet (17) for the gasolysis space (13) for generator gas and a heating element n (22.2U) are arranged to heat the primary air to a temperature of at least 100 ° C before it is fed to the pyrolysis space. 5. Anordning enligt krav H, k ä n n e t e c k n a d därav, att uppvärmningsorganen består av åtminstone en värmeväxlare (ZH), inrättad att tillföras en av den alstrade generatorgasen driven motors (22) avgaser.5. Device according to claim H, characterized in that the heating means consist of at least one heat exchanger (ZH), arranged to be supplied with exhaust gases of an engine (22) driven by the generated gas. 6. Anordning enligt krav U eller 5, k ä n n e t e c k n a d därav, att behållaren (1) har en övre (3) och en undre (10) öppning, vardera försedd med en sluss (U,ll) för tillförsel respektive utmatning av dolomit.Device according to claim U or 5, characterized in that the container (1) has an upper (3) and a lower (10) opening, each provided with a lock (U, ll) for supply and discharge of dolomite, respectively. 7. Anordning enligt något av kraven H-6, k ä n n e t e c k - n a d därav, att pyrolysutrymmet har en uppåt successivt stigande tvärsnittsarea.Device according to one of Claims H-6, characterized in that the pyrolysis space has an upwardly ascending cross-sectional area.
SE8702233A 1987-05-27 1987-05-27 SETTING OF STRAW OR SIMILAR STRAMATERIAL MAKING GENERATOR GAS, AND DEVICE FOR EXTENDING THE SET SE455423B (en)

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SE8702233A SE455423B (en) 1987-05-27 1987-05-27 SETTING OF STRAW OR SIMILAR STRAMATERIAL MAKING GENERATOR GAS, AND DEVICE FOR EXTENDING THE SET
PCT/SE1988/000256 WO1988009364A1 (en) 1987-05-27 1988-05-19 A method for generating producer gas from straw and like materials, and apparatus for carrying out the method

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SE8702233A SE455423B (en) 1987-05-27 1987-05-27 SETTING OF STRAW OR SIMILAR STRAMATERIAL MAKING GENERATOR GAS, AND DEVICE FOR EXTENDING THE SET

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IT1248156B (en) * 1991-05-08 1995-01-05 Daneco Danieli Ecologia Spa CONVERSION PROCEDURE FOR FUEL DERIVED FROM WASTE (RDF) IN COMBUSTIBLE GAS.
DE10037762B4 (en) * 2000-03-23 2010-01-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Device for generating electricity from biomass by gasification with subsequent catalytic elimination of tar compounds from the fuel gas
DE10149649A1 (en) * 2001-10-09 2003-04-24 Bu Bioenergie & Umwelttechnik Production of current from carbon-containing material, especially biomass, comprises allothermally gasifying material in reactor producing fluidized layer, cooling gas produced, and removing pollutants from gas
ES2656782T3 (en) 2005-05-03 2018-02-28 Danmarks Tekniske Universitet Pyrolysis procedure and apparatus

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US4191540A (en) * 1978-03-27 1980-03-04 Chevron Research Company Carbon dioxide acceptor process using countercurrent plug flow
GB2120118A (en) * 1982-05-14 1983-11-30 Foster Wheeler Energy Corp Fluidized bed gasification using bed material containing a calcium compound and silica
DE3239774A1 (en) * 1982-10-27 1984-05-03 Hoechst Ag, 6230 Frankfurt METHOD AND DEVICE FOR PRODUCING SYNTHESIS GAS

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