FI90969C - Mixing container for preparation of pulp to be fed into a biogas reactor - Google Patents
Mixing container for preparation of pulp to be fed into a biogas reactor Download PDFInfo
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- FI90969C FI90969C FI921728A FI921728A FI90969C FI 90969 C FI90969 C FI 90969C FI 921728 A FI921728 A FI 921728A FI 921728 A FI921728 A FI 921728A FI 90969 C FI90969 C FI 90969C
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Description
i 90969in 90969
Blandningsbehållare fOr beredning av massa som skall matas in i en biogasreaktorMixing container for preparation of pulp to be fed into a biogas reactor
Uppf inningen avser en blandningsbehållare fOr bered-5 ning av massa som skall matas in i en biogasreaktor, vilken massa våsentligen består av organisk avfallsmassa och vatten, vilken blandningsbehållare omfattar medel fOr bland-ning av avfallsmaterial och separering av oOnskade lått-och tungfraktioner samt separata tOmningsorgan fOr avlågs-10 nande av de från avfallsmaterialet separerede oOnskade fraktionerne samt massan som skall matas in i biogasrek-tom.The invention relates to a mixture container for preparation of pulp to be fed into a biogas reactor, which pulp essentially consists of organic waste mass and water, which mixing container comprises means for mixing waste material and separating unwanted song and heavy fractions and separate emptying means for removing the undesired fractions separated from the waste material as well as the pulp to be fed into the biogas record.
Det år kånt att hantera avfallsmaterial i biogasan-låggningar fOr produktion av metangas. I en dylik process 15 uppkommer också vatten och humusmassa. Metangasen kan brån-nas fOr erhållande av energi; vattnet återfOrs till processen och; humusmassan kan anvåndas som våxtunderlag och fyllnadsmaterial. Hanteringen av avfallsmaterialet i processens olika skeden år emellertid of ta problematiskt, 20 vilket beror på att avfallsmaterialet ej i allmånhet år sådant rent organiskt material som låmpar sig fOr nedbryt-ning, utan i avfallsmaterialet ingår en hel del oOnskade komponenter, vilka ej nedbryts eller nedbryts dåligt, samt som sliter kraftigt på biogasanlåggningens olika komponen-25 ter. Detta oOnskade material kan t.ex. vara polystyren och andra skumplaster, metaller (av vilka icke-jårnmetallema år de mest problematiska ty de kan ej separeras magnetiskt), glas, nylonstrumpor och Ovrigt plastmaterial. Man stråvar att separere mOj ligast vål dessa oOnskade i normalt 30 hushållsavfall ingående komponenter innan materialmassan leds in i biogasreaktorn i vilken materialmassan nedbryts och de Onskade slutprodukterne (metangas, vatten och humusmassa ) uppkommer.It is known to handle waste material in biogas plants for the production of methane gas. In such a process, water and humus pulp also arise. The methane gas can be burned to obtain energy; the water is returned to the process and; the humus pulp can be used as a growth substrate and filler material. However, the handling of the waste material at various stages of the process is often problematic, which is because the waste material is not generally a pure organic material which lends itself to degradation, but contains a lot of undesirable components which are not degraded or degraded. poorly, and which severely abrades the various components of the biogas plant. This undesirable material can e.g. such as polystyrene and other foam plastics, metals (of which non-ferrous metals are the most problematic because they cannot be separated magnetically), glass, nylon stockings and other plastic materials. It is strived to separate as much as possible these undesirable components normally contained in household waste before the material mass is led into the biogas reactor in which the material mass is decomposed and the desired final products (methane gas, water and humus mass) are generated.
I avsikt att få sammansåttningen och konsistensen 35 av massan som skall transporteras till biogasreaktorn låmp- 2 lig, blandas avfalIsmaterialet, som kånt, tillsammans med vatten i en blandningsbehållare eller s.k. pulper av nåmnda slag. Avsikten år att få de odnskade komponenterna separerede från massan innan den leds in i biogasreaktom. Sepa-5 reringen i blandningsbehållaren grundar sig på det faktum att de oOnskade komponenterna år antingen tyngre eller låttare ån massans nominella tåthet. Hårvid sjunker tungfraktionen, t.ex. metal lema och glas, ned och tappas bort nedifrån blandningsbehållaren. De låtta oOnskade komponen-10 tema eller låttfraktionen, såsom styrox, har mindre tåthet ån massans nominella tåthet och stiger dårfOr till ytan i blandningsbehållaren. FOr att nåmnda separering skall kunna vara god bOr massan i blandningsbehållaren kunna blandas effektivt.In order to have the composition and texture of the pulp to be transported conveniently to the biogas reactor, the waste material, as known, is mixed with water in a mixing vessel or so-called. pulps of the kind mentioned. The intention is to have the undesired components separated from the pulp before being introduced into the biogas reactor. The separation in the mixing container is based on the fact that the unwanted components are either heavier or lighter than the nominal density of the pulp. The hair fraction decreases, e.g. metal lema and glass, down and dropped from the bottom of the mixing vessel. The late unwanted components or song fraction, such as styrox, have less density than the nominal density of the pulp and rise thereby to the surface of the mixing container. FOR the said separation to be good, the pulp in the mixing container can be mixed effectively.
15 De kånda blandnigsbehållama fOrmår emellertid ej åstadkomma en sådan blandning av massan att separeringen av de oOnskade komponenterna kunde ske 1 den utstråckning som vore Onskvårt. De kånda blandnlngsbehållarna består av en cylinderformad lodråt behållare i vilken nedtill finns 20 en eller flere i horisontalplanet roterande propelIrar. Dyllka propellrar fOrmår blanda massan effektivt endast i propellrarnas omedelbara nårhet, med den fOljd att separeringseffekten som helhet betraktad biir dålig.However, the known mixing containers are not capable of providing such a mixture of the pulp that the separation of the undesired components could be effected in the extent that would be difficult. The known mixing containers consist of a cylindrical vertical container in which is located at the bottom one or more rotary propellers rotating in the horizontal plane. Dipping propellers can mix the pulp effectively only in the immediate proximity of the propellers, with the result that the separation effect as a whole is considered poor.
FOreliggande uppfinning avser avhjålpa nåmnda brist 25 med de kånda blandnlngsbehållarna. 1 detta syfte år fOr blandningsbehållaren enligt uppf inningen kånnetecknande att blandningsmedlen omfattar minst en i huvudsak lodråt bland-ningsskruv som ståcker sig från blandningsbehållarens bot-tenparti till blandningsbehållarens Ovre del upp till en 30 nivå som våsentligen motsvarar den hOgsta nivå som materialet, som skall blandas, intar i blandningsbehållaren. Tack vare att blandningsskruven/skruvama stråcker sig på nåmnda sått tlllråckligt hOgt upp biir också låttfraktionen transporterad upp och ned i behållaren och blandad så att 35 i den samlad tungfraktion kan separeras och sjunka ned.The present invention relates to alleviating said defect with the known mixing containers. For this purpose, the mixing container according to the invention is characterized in that the mixing means comprise at least one substantially vertical mixing screw extending from the bottom of the mixing container to the upper part of the mixing container up to a level which substantially corresponds to the highest level of the material to be mixed. , consumes in the mixing container. Due to the mixing screw / screws extending on said saturated to high ridge, the song fraction is also transported up and down in the container and mixed so that in the total heavy fraction can be separated and lowered.
i- 90969 3i- 90969 3
Enligt en synnerllgen fOredragen utfOringsform av uppfin-ningen utgOrs blandningsmedlen av tre blandningsskruvar, vilka anordnats på våsentligen sanuna avstånd från bland-ningsbehållarens lodråta centrumlinj e samt på samma inbOr-5 des avstånd, vilka blandningsskruvar ytterligare år anordnede att kunna transportera massa valbart uppåt och nedåt så att blandningsskruvama kan styras fOr att samtidigt ge mycket effektiv separering och blandning. Kostnadsmåssigt biir tre blandningsskruvar ej dyra. FOrst if all blandnlngs-10 behållaren uppvisar minst fem blandningsskruvar biir bland-ningsbehållaren fOrhållandevis dyr. Uppfinningens fOredragna utfOringsformer år återgivna i bifogade patentkrav 2 - 9.According to a particularly preferred embodiment of the invention, the mixing means are comprised of three mixing screws, arranged at substantially the same distance from the vertical center line of the mixing container, and at the same mutual distance, which mixing screws are further arranged to transport pulp down further so that the mixing screws can be controlled to simultaneously provide very efficient separation and mixing. In terms of cost, three mixing screws are not expensive. First, if all the mixing container has at least five mixing screws in the mixing container, it is relatively expensive. The preferred embodiments of the invention are set forth in the appended claims 2 - 9.
Den viktigaste fordelen med blandningsbehållaren 15 enligt uppfinningen år att den fOrmår effektivt separera oOnskade komponenter ur massan som matas in till densam-ma. Tack vare den effektiva separeringen har massan som fOrs videre till biogasreaktom bra sammansåttning med tanke på processen i biogasreaktom samt med tanke på att 20 den ej skall fOrorsaka stort slitage. En annan viktig fOrdel år, att blandningsbehållaren - på grund av sin effektiva funktion - ej år kritisk med avseende på materialets torrsubstanshalt: man kan behandla massa vårs torrsubstans-halt kan vara upp till ca 30 % medan kånda blandningsbe-25 hållare fOrutsåtter en torrsubstanshalt på hOgst ca 20 %. Detta innebår att avfallshanteringsprocessen kan gOras mycket ekonomisk medelst blandningsbehållaren enligt uppfinningen.The most important advantage of the mixing container 15 according to the invention is that it is able to effectively separate unwanted components from the pulp fed into the same. Thanks to the efficient separation, the pulp that is passed on to the biogas reactor has good composition in view of the process in the biogas reactor and considering that it should not cause great wear. Another important advantage is that the mixing container - because of its effective function - is not critical with regard to the dry matter content of the material: it is possible to treat the mass of the dry matter content of pulp can be up to about 30% while the known mixing container assumes a dry matter content of Not more than 20%. This means that the waste management process can be done very economically by means of the mixing container according to the invention.
Uppfinningen skall idet f01 j ånde beskrives med hjålp 30 av en fOredragen utfOringsform med hånvisning till blfogade ritning i vilken figur 1 visar schematiskt en biogasanlåggning i vilken anvånds en blandnigsbehållare enligt uppfinningen, figur 2 visar blandnigsbehållaren enligt uppfinnin-35 gen, sedd i genomskåming och 4 figur 3 visar blandnlngsbehållaren 1 figur 2 sedd ldngs skåmingslinje III - III.The invention will be described with reference to a preferred embodiment with reference to the accompanying drawing, in which figure 1 shows schematically a biogas plant in which a mixture container according to the invention is used, figure 2 shows the mixture container according to the invention, seen in cross-section. Fig. 3 shows the mixing container 1 Fig. 2 as seen on the line III - III.
I figur 1 visas av vilka huvudkomponenter en bio-gasaniaggning består. De i figuren angivna hånvisnings-5 siffroma har f01jånde innebOrd: 1. AvfallstransportOr 2. Biofilter massa 3. Slambehållare 4. Biofilter 10 5. Flakt 6. Blandningsbehållare 7. Biomassapump 8. Gaspump 9. Reaktor 15 10. Press 11. Vattenpump 12. Brunn 13. Humustransporter 14. Gasbrannare 20 15. Fackla 16. Gaslager 17. Distributlonskompessor 18. Dieselgenerator 19. Vattentank 25 Aniaggningen fungerar i korthet så, att organiskt avfall fOres medelst transportoren 1 till blandningsbehål- laren 6. Till blandnlngsbehållaren 6 fOres också vatten från tanken 19 och slam från slambehållarna 3. Dessa komponenter blandas till en biomassa i blandnlngsbehållaren 6.Figure 1 shows the main components of a biogas plant. The reference numbers shown in the figure have the following meanings: 1. Waste transportation 2. Biofilter mass 3. Sludge container 4. Biofilter 10 5. Flange 6. Mixing container 7. Biomass pump 8. Gas pump 9. Reactor 15 10. Press 11. Water pump 12. Well 13. Humus transports 14. Gas burner 20 15. Torch 16. Gas storage 17. Distributor compressor 18. Diesel generator 19. Water tank 25 The preparation works briefly so that organic waste is fed through the conveyor 1 to the mixing vessel 6. Water from the mixing vessel 6 is also fed. tank 19 and sludge from the sludge containers 3. These components are mixed into a biomass in the mixing vessel 6.
30 Biomassan fOres satsvis vidare till reaktorn 9 dår massan avrOtas i anaerobisk miljO i cirka två veckor så att metangas uppstår, vilken gas leds från reaktoms topp till gaslagret 16. Från reaktorns 9 botten tappas ut helt rOtad massa som pressas fOr erhållande av humusmassa och vatten.The biomass is batch-fed to reactor 9 where the pulp is degraded in anaerobic environment for about two weeks to produce methane, which gas is fed from the top of the reactor to the gas storage 16. From the bottom of the reactor 9, fully rotted pulp is squeezed to obtain humus mass and water. .
35 Vattnet leds till vattentanken 19, varifrån vattnet kan returnere till blandnlngsbehållaren 6.The water is conducted to the water tank 19, from which the water can return to the mixing vessel 6.
l! 90969 5 I figurerne 2 och 3 visas blandningsbehållaren 6 enligt figur 1 noggrannare. Blandningsbehållaren 6 omfattar en cylindrisk behållare som avsmalnar nedtill koniskt. Genom att behållarn 6 nedtill år konisk så styrs materialet 5 nedåt mot behållarens centrum, vilket år viktigt med tanke på effektivt avlågsnande av olika slags material från behållaren. Behållarens 6 volym kan exempelvis vara 200 kubikmeter. In i behållaren 6 har anornats tre blandnings-skruvar 20 - 22 som ståcker sig från behållarens 6 botten-10 parti till behållarens Ovre del upp till en med stråcklinje antydd nivå 23 som i praktiken motsvarar den hbgsta nivå som materialet, som skall blandas, intar i behållaren. Blandningsskruvama 20 - 22 år anordnade symmetriskt med avseende på behållarens 6 centrumlinje X - X och de har 15 samma inbOrdes avstånd. Blandningsskruvamas 20 - 22 sam-manlagda tvårsnittsyta utgttr uppifrån sett ca 10% av behållarens 6 tvårsnittsyta. Om skruvarnas 20 - 22 tvårsnittsyta år fOr liten i fOrhållande till behållarens tvårsnittsyta uppnås ej gott separerings/blandningsresultat av materia-20 let. Då skruvarnas tvårsnittsyta år 5 - 40 % av behållarens 6 tvårsnittsyta uppnås fOrmodligen gott resultat. Ett interval 1 på 7 - 20 % kan antas ge båsta resultat.l! In Figures 2 and 3, the mixing container 6 of Figure 1 is shown more precisely. The mixing vessel 6 comprises a cylindrical container which tapered downwardly of the taper. Because the container 6 is tapered downwards, the material 5 is guided downwards towards the center of the container, which is important in view of the efficient removal of various kinds of material from the container. For example, the volume of the container 6 may be 200 cubic meters. Into the container 6 are three mixing screws 20 - 22 extending from the bottom portion of the container 6 to the upper part of the container up to a level 23 indicated by a stroke line which in practice corresponds to the highest level that the material to be mixed takes in the container. The mixing screws 20 - 22 years are arranged symmetrically with respect to the center line X - X of the container 6 and they have the same mutual spacing. The cross-sectional cross-sectional area of the mixing screws 20-22 is viewed from above from about 10% of the cross-sectional area of the container 6. If the cross-sectional area of the screws 20 - 22 is too small in relation to the cross-sectional area of the container, good separation / mixing results of the material are not achieved. When the cross-sectional area of the screws is 5 - 40% of the 6 cross-sectional area of the container, a good result is probably achieved. An interval 1 of 7 - 20% can be assumed to give the best results.
Tack vare att blandningsskruvama 20 - 22 år lagrade både upptill och nedtill i behållaren 6 får de en 25 stadig lagring. Varje skruv 20 - 22 drivs av en upptill anordnad motor 24, 25, 36. Motorema 24, 25, 36 kan roteres i bågge riktningar så att skruvarna 20 - 22 får olika transportriktning. Genom att låta skruvarna 20 - 22 rote-ra i olika riktningar på beståmt sått, som kan styras me-30 delst ADB-program, får man inte endast materialet, som via rOret 26 matas in i behållaren, att gå nedåt och uppåt 1 behållaren, vilket åstadkommer effektiv separering, utan man åstadkommer också att materialet eller massan i behållaren cirkulerer i pilamas rlktning i figur 3, varvid sam-35 tidigt med separeringen erhålles en god blandnlng av materialet .Thanks to the mixing screws 20 - 22 years being stored both at the top and bottom of the container 6, they get a steady storage. Each screw 20 - 22 is driven by a motor 24, 25, 36. The motors 24, 25, 36 can be rotated in curved directions so that the screws 20 - 22 have different transport directions. By allowing the screws 20 - 22 to rotate in different directions in a determined manner, which can be controlled by means of ADB programs, not only does the material, which via the tube 26 is fed into the container, go down and up in the container , which provides efficient separation, but also causes the material or mass in the container to circulate in the direction of the arrows in Figure 3, thereby obtaining a good mixture of the material at the same time as the separation.
66
Den i figur 2 visade behållaren 6 år fylld fill maximal nivå. På ytan av massan flyfer styroxbitar 27 och annan låttfraktion. Nedtill har centralt i behållaren anordnats en konformig spridare 28 som fOrhindrar att tung-5 fraktion 29 faller ned i det centralt belågna tOmningsrOret 30. TOmningsrOrets 30 avstånd från blandningsskruvarnas 20 - 22 nedre ånde skall vara mOjligast liten: ett avstånd på några tiotal centimeter år låmligt. Hånvisningssiffra 31 betecknar en roterbar skraparkniv som vid rotation skOter 10 om att tungfraktion matas ned i rOret 32, varifrån den urtappas. I rOret 32 finns en ventilmekanism 35 som kan Oppnas och stångas beroende på når tungfraktionen 29 skall tOrnmas ur. Mångden tungfraktion 29 som samlas nedtill i behållaren i utrymmet 33 Okar successivt (då ventilen 35 15 år stångd). Senast når tungfraktionen 29, efter att behållaren 6 via tOmningsrOret 30 tOmts några gånger, sti-git upp till en nivå motsvarande tOmningsrOrets Ovre Opp-ning 34, måste ventilen 35 Oppnas och tungfraktionen kOrs ned i rOret 32. Utrymmet 33 år omgivet av glasvåggar, var-20 vid man kan iakttaga på vilken nivå tungfraktionen befinner sig. Efter att behållaren 6 våsentligen har tomts finns det också låttfraktion 27 i utrymmet 33. Låttfraktionen 27 kan också tOmmas ned i rOret 32. I behållarens 6 mantel finns ett eller flere rOr 34 medelst vilka man kan spruta in 25 skOljvatten fOr rengOring av behållarens nedre parti. Massan som via tOmningsrOret transporteras till reaktom in-nehåller tack vare blandningsbehållarens beskrivna konstruktion endast minimala mångder oOnskad tung- och låttfraktion.The container shown in Figure 2 is 6 years filled fill maximum level. On the surface of the pulp, styrox bits 27 and other song fraction are flowing. At the bottom, a conical spreader 28 is arranged centrally in the container, which prevents tongue fraction 29 from falling into the centrally located drain pipe 30. The distance of the drain pipe 30 from the lower end of the mixing screws 20 to 22 should be at most small: a distance of a few tens of centimeters. . Reference number 31 denotes a rotatable scraper blade which, upon rotation, causes the tongue fraction to be fed down into the tube 32, from which it is dropped. In the tube 32 there is a valve mechanism 35 which can be opened and closed depending on when the tongue fraction 29 is to be emptied. The amount of heavy fraction 29 that accumulates at the bottom of the container in the space 33 is gradually increasing (when the valve 35 is closed for 15 years). Most recently, after the tank 6 has been emptied a few times through the emptying tube 30 to a level corresponding to the upper opening 34 of the emptying tube, the valve 35 must be opened and the tongue fraction is lowered into the tube 32. The space 33 years is surrounded by glass walls, whereby one can observe at what level the heavy fraction is. After the container 6 has been substantially emptied, there are also song fraction 27 in the space 33. The song fraction 27 can also be emptied into the tube 32. In the case of the container 6 there is one or more tubes 34 by which you can inject 25 rinse water for cleaning the lower portion of the container. . The pulp transported to the reactor via the emptying tube contains only minimal quantities of undesirable heavy and song fraction due to the design of the mixing container.
30 Uppfinningen har i det foregående beskrivits med hjålp av endast ett exempel och dårfOr framhålles, att uppfinningen till sina detaljer kan fOrverkligas på många sått inom ramen fOr bifogade patentkrav. Hårvid år det tånkbart att blandningsskruvarnas antal varierer från det 35 visade. Med endast en blandningsskruv kan man uppnå en viss 90969 7 separerings- och blandningseffekt, men i praktiken ar det att fOredra att minst två blandningsskruvar anvands. Det ar tankbart att i sanuna behållare anvands blandningsskruvar med olika riktning på gangorna, varvid alltså en del ar 5 hbgergangade och andra vanstergdngade. 1 ett dylikt fall kan blandningsskruvama latt anordnas att driva massan i olika riktningar medelst endast en gemensam motor som driver samtliga blandningsskruvar. Det ar också tankbart att blandingsskruvama ej ar i absolut lodratt lage, utan 10 ar något snedstailda.The invention has been described in the foregoing by way of example only and it is pointed out that the invention can be realized in many ways within the scope of the appended claims. In this case, it is conceivable that the number of mixing screws will vary from that shown. With only one mixing screw, a certain separation and mixing effect can be achieved, but in practice it is required that at least two mixing screws be used. It is conceivable that in mixed containers mixing screws with different directions are used on the corridors, thus some are 5-threaded and other non-threaded. In such a case, the mixing screws can be readily arranged to drive the pulp in different directions by means of only one common motor driving all the mixing screws. It is also conceivable that the mixing screws are not in absolute vertical position, but are somewhat oblique.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI921728A FI90969C (en) | 1992-04-16 | 1992-04-16 | Mixing container for preparation of pulp to be fed into a biogas reactor |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI921728 | 1992-04-16 | ||
| FI921728A FI90969C (en) | 1992-04-16 | 1992-04-16 | Mixing container for preparation of pulp to be fed into a biogas reactor |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| FI921728A0 FI921728A0 (en) | 1992-04-16 |
| FI921728A FI921728A (en) | 1993-10-17 |
| FI90969B FI90969B (en) | 1994-01-14 |
| FI90969C true FI90969C (en) | 1994-04-25 |
Family
ID=8535140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI921728A FI90969C (en) | 1992-04-16 | 1992-04-16 | Mixing container for preparation of pulp to be fed into a biogas reactor |
Country Status (1)
| Country | Link |
|---|---|
| FI (1) | FI90969C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998024730A1 (en) * | 1996-12-03 | 1998-06-11 | Citec International Ltd. Oy | Biogas reactor |
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1992
- 1992-04-16 FI FI921728A patent/FI90969C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FI921728A0 (en) | 1992-04-16 |
| FI90969B (en) | 1994-01-14 |
| FI921728A (en) | 1993-10-17 |
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