SE510535C2 - Methods of regenerating used carbonate grains during gas purification - Google Patents

Methods of regenerating used carbonate grains during gas purification

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Publication number
SE510535C2
SE510535C2 SE9500323A SE9500323A SE510535C2 SE 510535 C2 SE510535 C2 SE 510535C2 SE 9500323 A SE9500323 A SE 9500323A SE 9500323 A SE9500323 A SE 9500323A SE 510535 C2 SE510535 C2 SE 510535C2
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SE
Sweden
Prior art keywords
grains
carbonate
granules
rotor
mill
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Application number
SE9500323A
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Swedish (sv)
Other versions
SE9500323D0 (en
SE9500323L (en
Inventor
Lars Lidstroem
Original Assignee
Pronea Miljoeteknik Ab
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.)
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Publication date
Application filed by Pronea Miljoeteknik Ab filed Critical Pronea Miljoeteknik Ab
Priority to SE9500323A priority Critical patent/SE510535C2/en
Publication of SE9500323D0 publication Critical patent/SE9500323D0/en
Priority to PCT/SE1996/000074 priority patent/WO1996023577A1/en
Priority to CZ972298A priority patent/CZ229897A3/en
Priority to PL96321320A priority patent/PL321320A1/en
Priority to AU46374/96A priority patent/AU4637496A/en
Publication of SE9500323L publication Critical patent/SE9500323L/en
Priority to FI973141A priority patent/FI973141A/en
Publication of SE510535C2 publication Critical patent/SE510535C2/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/96—Regeneration, reactivation or recycling of reactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/508—Sulfur oxides by treating the gases with solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
    • B01J20/043—Carbonates or bicarbonates, e.g. limestone, dolomite, aragonite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
    • B01J20/28004—Sorbent size or size distribution, e.g. particle size
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/3433—Regenerating or reactivating of sorbents or filter aids other than those covered by B01J20/3408 - B01J20/3425
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/50—Aspects relating to the use of sorbent or filter aid materials
    • B01J2220/56—Use in the form of a bed

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Treating Waste Gases (AREA)
  • Industrial Gases (AREA)

Abstract

There is described a method of regenerating carbonate granules used in a gas cleansing plant in which gas to be cleansed flows through a bed of carbonate granules, e.g. mineral granules rich in limestone and having an approximate size of 5-10 mm, by removing from said granules surface coatings formed by impurities, such as SOx-impurities, in the gas cleansing process. The granules removed from the bed ar worked mechanically in a manner which subjects the granules to pressure forces and shear forces. The mechanical working process is effected by the mutal infuence of the carbonate granules on one another in a mill (7) having a rotor (7") provided with outwardly projecting elements (7'''), said elements transmitting the energy of rotor motion to the carbonate granules (7'), whereafter regenerated carbonate granules having an approximate size of 5-10 mm are separated from the thus worked material and returned to the bed.

Description

510 535 i z Beläggningar erhållna genom kemisk reaktion med föreningar i den rening undergående gasen, såsom t ex SCfi-föreningar, kan vara relativt hårda och kräva en relativt stor energiinsats, för att en effektiv rening av karbonatkornen skall kunna upp- nås. För att uppnå detta i en roterande trumma krävs en rela- tivt lång uppehållstid,och det är heller inte klarlagt i vilken utsträckning som nernötningen sker av såväl av SOX-föreningar belagda ytor som sådana som ej är belagda. Man har ej heller vid denna teknik möjlighet att variera nernötningsgraden annat än genom ökning av uppehållstiden i truman, och man kan på sistnämnda sätt endast marginellt påverka nernötningsgraden. 510 535 i z Coatings obtained by chemical reaction with compounds in the gas undergoing purification, such as SC fi compounds, can be relatively hard and require a relatively large energy input in order to achieve efficient purification of the carbonate grains. In order to achieve this in a rotating drum, a relatively long residence time is required, and it is also not clear to what extent the wear occurs of surfaces coated by SOX compounds as well as those that are not coated. It is also not possible with this technique to vary the degree of abrasion other than by increasing the residence time in the drum, and in the latter way one can only marginally influence the degree of abrasion.

Med en agiterad kvarn med karbonatkornen som malmedium kan avskiljandet på helt annat sätt kontrolleras och styras med olika åtgärder, som nedan beskrivs i samband med att kvarnens arbetssätt förklaras.With an agitated mill with the carbonate grains as grinding medium, the separation can be controlled and controlled in a completely different way with various measures, which are described below in connection with the mill's working method being explained.

I agiterade kvarnar är energitillförseln per volymenhet av malutrymmet i jämförelse med roterande trumor mycket stor, vilket innebär att kvarninstallationen kräver förhållandevis litet utrymme för sama energiinsats. Kvarnen kan utan olägen- het byggas för såväl liten som stor skala, och de från utfällda ämnen renade karbonatkornen kan efter bearbetningen i denna recirkuleras till gasreningsanläggningen med optimalt resultat såväl med avseende på avskiljningsgrad som på lämplig partikel- storleksfördelning.In agitated mills, the energy supply per unit volume of the grinding space in comparison with rotating drums is very large, which means that the mill installation requires relatively little space for the same energy input. The mill can be built without inconvenience for both small and large scale, and the carbonate grains purified from precipitated substances can, after processing in this, be recycled to the gas purification plant with optimal results both in terms of degree of separation and in suitable particle size distribution.

Godstransporten genom en agiterad kvarn sker vid ett torrt system, som här föredrages, medelst gravitationskrafter genom kvarnen. Godshastigheten kan varieras genom inställning av de anordningar som matar in mineralkornen i kvarnen och de anord- ningar som matar ut dessa ur kvarnen.The transport of goods through an agitated mill takes place in a dry system, which is preferred here, by means of gravitational forces through the mill. The speed of the goods can be varied by setting the devices which feed the mineral grains into the mill and the devices which feed these out of the mill.

Den här avsedda malningsprincipen kan även karakteriseras som innehållande en inbyggd dynamisk klasseringsfunktion, vilken medverkar till att göra avskiljningen av de utfällda kemiska föreningarna effektiv. Strömningen genom kvarnen sker i princip _. 510 sas snabbare för mindre korn än för större korn. Eftersom absorp- tionen av svavelföreningar sker på kornens ytor, innebär det att mängden utfällda ämnen per ytenhet är någorlunda lika stor på i detta sammanhang såväl stora som små korn. Härav följer att nötningen/malningen inverkar något mer på större korn än på mindre.This grinding principle can also be characterized as containing a built-in dynamic classification function, which helps to make the separation of the precipitated chemical compounds effective. The flow through the mill takes place in principle _. 510 is sown faster for smaller grains than for larger grains. Since the absorption of sulfur compounds takes place on the surfaces of the grains, this means that the amount of precipitated substances per unit area is approximately the same in this context, both large and small grains. It follows that the abrasion / grinding has a slightly greater effect on larger grains than on smaller ones.

Utförda undersökningar visar att vid malning av mineraliska produkter är det inte endast de fysikaliska förloppen som för- knippas med mekanisk nedbrytning som inträffar. Även materia- lets struktur, ytegenskaper och reaktionsbenägenhet förändras.Studies have shown that when grinding mineral products, it is not only the physical processes that are associated with mechanical degradation that occur. The structure, surface properties and tendency to react of the material also change.

Den energimängd som tillförs karbonatmineralen ger förutom nybildning av ytor och partiklar även upphov till ett gitter- stört skikt där mikrospricktätheten är sådan, att reaktivite- ten ökar utöver vad som kan förklaras av de enskilda kornens storlek. Detta kan observeras med olika mätmetoder, såsom differentialtermoanalys, röntgenanalys eller kärnmagnetisk reSOnanS .In addition to the formation of surfaces and particles, the amount of energy supplied to the carbonate mineral also gives rise to a lattice-disturbed layer where the micro-crack density is such that the reactivity increases beyond what can be explained by the size of the individual grains. This can be observed with various measurement methods, such as differential thermoanalysis, X-ray analysis or nuclear magnetic resonance.

Ytterligare för uppfinningen utmärkande drag anges i under- kraven.Additional features of the invention are set out in the subclaims.

Uppfinningen beskrivs i det följande med hänvisning till bifogade ritning, som starkt schematiskt åskådliggör ett enbart som exempel valt utförande av en anläggning för utövande av sättet enligt uppfinningen.The invention is described in the following with reference to the accompanying drawing, which strongly schematically illustrates an exemplary embodiment of a plant for practicing the method according to the invention.

På ritningen är med 1 betecknat ett kärl för gasrening, inne- hållande karbonatkorn med en ungefärlig storlek av 5-10 mm. De färska, ej använda mineralkornen tillförs via matare till kärlets övre del, såsom antyds med pil 2, och matas ut ur dess nedre del med en anordning 3 härför. En viss andel av kornen kan returneras till gasreningsanläggningen utan avskiljning, vilket markeras med godsströmmen 4. De med l-4 angivna anord- ningarna omfattas ej av uppfinningen men visas för att öka förståelsen av densamma. 510 535 4 Den andel av karbonatkornen som skall befrias frän upptagna föreningar leds ner i ett kärl 5. Med en matningsanordning 6 regleras tillförseln av mineralkornen till en agiterande sta- tionär kvarn 7. Matningsanordningen 6 är lämpligen en skruv- matare.In the drawing, 1 denotes a vessel for gas purification, containing carbonate grains with an approximate size of 5-10 mm. The fresh, unused mineral grains are supplied via feeders to the upper part of the vessel, as indicated by arrow 2, and are discharged from its lower part with a device 3 for this purpose. A certain proportion of the grains can be returned to the gas purification plant without separation, which is marked with the goods flow 4. The devices indicated by 1-4 are not covered by the invention but are shown to increase the understanding thereof. 510 535 4 The proportion of the carbonate grains to be freed from absorbed compounds is led down into a vessel 5. With a feeding device 6 the supply of the mineral grains to an agitating stationary mill 7 is regulated. The feeding device 6 is suitably a screw feeder.

Mineralkornen leds sålunda till kvarnen 7, varmed i denna ansökan avses en agiterad kvarn, vid vilken malnings- och nöt- ningsverkan àstadkomes genom att mineralkornen, antydda vid 7', agiteras med en hög hastighet rörlig rotor 7” försedd med stavar 7”._Malnings- och nötningsverkan àstadkomes sàlunda genom tryck- och skjuvkrafter samt rörelser mellan karbonat- kornen sinsemellan, vilka krafter alstras medelst nämnda rotor eller omrörare, som normalt roterar med ca 80 varv per minut och avger en hög effekt per kvarnvolymenhet.The mineral grains are thus led to the mill 7, by which application is meant an agitated mill, in which grinding and abrasion action is achieved by agitating the mineral grains, indicated at 7 ', with a high speed movable rotor 7 "provided with rods 7". - and abrasion action is thus achieved by compressive and shear forces as well as movements between the carbonate grains among themselves, which forces are generated by said rotor or stirrer, which normally rotates at about 80 revolutions per minute and emits a high power per mill volume unit.

I kvarnen 7 kan den önskade graden av nernötning och nedmalning av karbonatkornen anpassas till de krav som ställs i fràga om gasreningskapacitet hos det sälunda regenererade materialet, dvs genom att öka eller minska andelen avsiktad finfraktion.In the mill 7, the desired degree of abrasion and grinding of the carbonate grains can be adapted to the requirements set in terms of gas purification capacity of the thus regenerated material, ie by increasing or decreasing the proportion of intended fine fraction.

Detta är även en väsentlig faktor, dä karbonatmineral kan ha olika hárdhet, olika svavelupptagningskapacitet m m, vilket kan kräva korrektioner för att uppnà lämpliga processegenskaper.This is also an important factor, as carbonate minerals may have different hardnesses, different sulfur uptake capacities, etc., which may require corrections to achieve suitable process properties.

Kvarnen 7 kan sàlunda lämpligen förses med varvtalsreglering för att pà ett enkelt sätt styra det önskade energiuttaget ur kvarnen. Energiförbrukningen per viktenhet bearbetat material styr mängden genom bearbetning bildad finfraktion.The mill 7 can thus suitably be provided with speed control in order to control the desired energy output from the mill in a simple manner. The energy consumption per unit of weight of processed material controls the amount of fine fraction formed by processing.

Energiförbrukningen per viktenhet är även en funktion av hur hög medienivàn är i kvarnen vid ett pà rotorn givet antal ut- skjutande element, lämpligen i form av stavar. Energiförbruk- ningen kan sálunda även regleras genom att minska eller öka niván av mineralkorn i kvarnen 7, varigenom antalet stavar 7” i beröring med chargen minskar eller ökar. šïl 51. 0 535 Genom att utforma malverktygen, dvs stavarna, pá lämpligt sätt eller att välja lämpligt inbördes avstånd mellan dessa, kan man pàverka avvägningen mellan nötning och nedmalning allt efter de speciella behov som föreligger i varje enskilt fall.The energy consumption per unit weight is also a function of how high the media level is in the mill with a number of projecting elements given on the rotor, suitably in the form of rods. The energy consumption can thus also be regulated by reducing or increasing the level of mineral grains in the mill 7, whereby the number of rods 7 ”in contact with the charge decreases or increases. šïl 51. 0 535 By designing the grinding tools, ie the rods, in a suitable way or by choosing a suitable mutual distance between them, it is possible to influence the balance between abrasion and grinding according to the special needs that exist in each individual case.

Graden av nernötning och/eller nermalning av karbonatkornen 7' bestäms dels av den mängd svavel som skall absorberas, dels av kravet pà renhet hos dessa korn efter bearbetningen och dels även av kravet att bearbetningen skall ske pá sàdant sätt, att tillförsel av nytt material i möjligaste man skall kompensera den mängd som avskiljts. Det är härvid väsentligt att detta samspel resulterar i att gasmotstàndet i kärlet för svavel- rening hàlls sà konstant som möjligt genom vidtagande av lämp- liga atgärder enligt ovan. Ur ekonomisk synpunkt är det även viktigt att hälla avskiljningen pà sà làg nivà som möjligt för att undvika onödiga förluster av karbonatmineral.The degree of abrasion and / or grinding of the carbonate grains 7 'is determined partly by the amount of sulfur to be absorbed, partly by the requirement for purity of these grains after processing and partly also by the requirement that the processing must take place in such a way that new material is added. as much as possible to compensate the amount separated. It is essential here that this interaction results in the gas resistance in the vessel for sulfur purification being kept as constant as possible by taking appropriate measures as above. From an economic point of view, it is also important to keep the separation at as low a level as possible in order to avoid unnecessary losses of carbonate minerals.

Om man inte genom tillsats av nytt material eller genom ökad bearbetning kan uppnà balans i fraga om gasmotstànd genom ökad avskiljning, kan det vara nödvändigt att även utnyttja en möj- lighet att avlägsna en mellanfraktion, om denna visar sig ha anrikats i sádan omfattning att den kan páverka gasmotstàndet i reaktorn.If it is not possible to achieve a balance in terms of gas resistance through increased separation through the addition of new material or through increased processing, it may be necessary to also use an option to remove an intermediate fraction, if this proves to have been enriched to such an extent that it can affect the gas resistance in the reactor.

Med en matningsanordning 8, lämpligen en skivmatare, regleras uttaget ur kvarnen 7 och tillförseln till en sikt 9. Sikten 9 avskiljer en finfraktion 10, och överkornen ll fràn sikten àterföres till svavelrening. Sikten 9 kan ha tvà eller tre däck. Det sistnämnda möjliggör avskiljning av en valfri stor- lek pà en mellanfraktion 12. Detta kan i vissa sammanhang vara en lämplig átgärd för att upprätthålla den önskade medelkorn- storleken i svavelreningsanordningen, vilket fordras för att fa lämpligt motstånd för de gaser som skall ströma genom kärlet.With a feeding device 8, suitably a disc feeder, the withdrawal from the mill 7 and the supply to a sieve 9 are regulated, the sieve 9 separates a fine fraction 10, and the top grains 11 from the sieve are returned for sulfur purification. The screen 9 can have two or three decks. The latter allows the separation of an optional size of an intermediate fraction 12. This may in some contexts be a suitable measure to maintain the desired average grain size in the sulfur purifier, which is required to obtain suitable resistance for the gases to flow through the vessel. .

För applikationer, där avskiljningen ej ställer speciella krav pa noggranhet vid avsiktningen, kan en intern siktning i kvarnen 7 vara tillfyllest. Detta sker dà genom anbringande av 510 535 s en siktplát 13 i kvarnens botten, medan överkornen 14 leds ut via en gallerförsedd öppning 15 i kvarnmanteln.For applications where the separation does not place special demands on accuracy in the screening, an internal screening in the mill 7 may be sufficient. This is done by placing a screen plate 13 in the bottom of the mill, while the upper grains 14 are led out via a grid-provided opening 15 in the mill casing.

Uppfinningen är icke begränsad till ovan beskrivna tillväga- gàngssätt och pá ritningen visat utföringsexempel utan kan realiseras pà godtyckligt sätt inom ramen för de efterföljande patentkraven.The invention is not limited to the above-described approaches and exemplary embodiments shown in the drawing, but can be realized in any manner within the scope of the following claims.

Claims (9)

510 535 P a t e n t k r a v510 535 P a t e n t k r a v 1. l. Sätt att vid en gasreningsanläggning vid vilken ett kärl (1), som genomströmmas av rening undergående gas, in- nehåller karbonatkorn, t.ex. kalkstensrika mineralkorn, med en ungefärlig storlek av 5-10 mm, regenerera utnyttjade karbonatkorn, genom att från dessa avlägsna föroreningar, varvid kornen uttagna ur kärlet (1) underkastas tryck- och skjuvpàkänningar på desamma alstrande mekanisk bearbetning, kànnetecknad av att bearbetningen utföres genom inbördes inverkan av karbonatkornen pà varandra i en kvarn (8) med en rotor (7") försedd med utskjutande element (7"'), vilka överför rotorrörelsens energi till karbonatkornen (7'), varpà regenererade karbonatkorn med en ungefärlig storlek av 5-lO mm avskiljes från det så bearbetade materialet och àterföres till kärlet (1).1. l. In a gas purification plant in which a vessel (1), which is permeated by purification gas, contains carbonate grains, e.g. limestone-rich mineral grains, with an approximate size of 5-10 mm, regenerate utilized carbonate grains, by removing contaminants from them, the grains removed from the vessel (1) being subjected to pressure and shear stresses on the same generating mechanical processing, characterized in that the processing is carried out action of the carbonate grains on each other in a mill (8) with a rotor (7 ") provided with projecting elements (7" '), which transfer the energy of the rotor movement to the carbonate grains (7'), whereupon regenerated carbonate grains with an approximate size of 5-10 mm is separated from the material so processed and returned to the vessel (1). 2. Sätt enligt krav l, kànnetecknat av att bearbetningen anpassas genom reglering av karbonatkornnivàn i kvarnen (7).Method according to claim 1, characterized in that the processing is adapted by regulating the carbonate grain level in the mill (7). 3. Sätt enligt krav l eller 2, kännetecknat av att bear- betningen anpassas genom reglering av rotorns (7") varvtal.Method according to Claim 1 or 2, characterized in that the machining is adapted by regulating the speed of the rotor (7 "). 4. Sätt enligt något av krav l - 3, kännetecknat av att det användes en rotor (7"), vars utskjutande element (7"') har formen av stavar.Method according to one of Claims 1 to 3, characterized in that a rotor (7 ") is used, the projecting elements (7" ') of which are in the form of rods. 5. Sätt enligt något av krav l - 4, kännetekcnat av att bearbetningen anpassas genom val av antal stavar (7"') på rotorn (7").Method according to one of Claims 1 to 4, characterized in that the machining is adapted by selecting the number of rods (7 "') on the rotor (7"). 6. Sätt enligt något av krav l - 5, kànnetecknat av att bearbetningen anpassas genom val av dimension av de enskil- da stavarna (7"'). 510 535Method according to one of Claims 1 to 5, characterized in that the machining is adapted by selecting the dimension of the individual rods (7 "'). 510 535 7. Sätt enligt något av krav l - 6, kännetecknat av att bearbetningen utföres på sådant sätt, att de avskilda be- läggningarna utgör upp till 5% av karbonatkornens vikt.Method according to one of Claims 1 to 6, characterized in that the processing is carried out in such a way that the separated coatings constitute up to 5% of the weight of the carbonate grains. 8. Sätt enligt något av krav l - 7, kännetecknat av att den efter bearbetningen erhållna produkten avsiktas i två eller tre fraktioner (lO,ll,l2).Method according to one of Claims 1 to 7, characterized in that the product obtained after processing is intended in two or three fractions (10, 11, 12). 9. Sätt enligt nàgot av krav l - 8, kännetecknat av att den efter bearbetningen erhållna produktens mellanfraktion (12) efter siktning får undergå viss nedmalning.Method according to one of Claims 1 to 8, characterized in that the intermediate fraction (12) of the product obtained after processing is subjected to some grinding after sieving.
SE9500323A 1995-01-30 1995-01-30 Methods of regenerating used carbonate grains during gas purification SE510535C2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE9500323A SE510535C2 (en) 1995-01-30 1995-01-30 Methods of regenerating used carbonate grains during gas purification
PCT/SE1996/000074 WO1996023577A1 (en) 1995-01-30 1996-01-24 Regeneration of carbonate minerals used in gas purification processes
CZ972298A CZ229897A3 (en) 1995-01-30 1996-01-24 Regeneration process of carbonate granules used in purification processes
PL96321320A PL321320A1 (en) 1995-01-30 1996-01-24 Method of regenerating carbonate minerals used in gas purification processes
AU46374/96A AU4637496A (en) 1995-01-30 1996-01-24 Regeneration of carbonate minerals used in gas purification processes
FI973141A FI973141A (en) 1995-01-30 1997-07-29 Regeneration of carbonate minerals used in gas purification processes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9500323A SE510535C2 (en) 1995-01-30 1995-01-30 Methods of regenerating used carbonate grains during gas purification

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SE9500323D0 SE9500323D0 (en) 1995-01-30
SE9500323L SE9500323L (en) 1996-07-31
SE510535C2 true SE510535C2 (en) 1999-05-31

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SE9500323A SE510535C2 (en) 1995-01-30 1995-01-30 Methods of regenerating used carbonate grains during gas purification

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AU (1) AU4637496A (en)
CZ (1) CZ229897A3 (en)
FI (1) FI973141A (en)
PL (1) PL321320A1 (en)
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DE19962734A1 (en) * 1999-12-23 2001-06-28 Wolf Dieter Hamisch Removal of gaseous boron trifluoride and pretreatment of process waste gas involves spraying with water or aqueous solution to form boron oxide and hydrogen fluoride and optionally condense water and acid
ATE519534T1 (en) * 2007-05-16 2011-08-15 Babcock Noell Gmbh SYSTEM AND METHOD FOR REMOVING POLLUTANTS FROM EXHAUST GASES
KR101298727B1 (en) * 2011-06-28 2013-08-21 현대제철 주식회사 Purification apparatus using adsorption and filtration and method for back washing of the purification apparatus

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DE3232080C2 (en) * 1982-08-28 1986-10-16 Rheinisch-Westfälisches Elektrizitätswerk AG, 4300 Essen Process for the dry removal of sulfur dioxide and other pollutants from flue gases
SE442777B (en) * 1984-03-16 1986-01-27 Lennart Karlsson DEVICE FOR AIR CONDITIONING AND PURIFICATION OF GAS, primarily ROCKS
FI83166B (en) * 1989-02-15 1991-02-28 Imatran Voima Oy RENINGSMETOD FOER ROEKGASER OCH ANLAEGGNING FOER RENING AV ROEKGASER.
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WO1996023577A1 (en) 1996-08-08
FI973141A0 (en) 1997-07-29
SE9500323L (en) 1996-07-31
FI973141A (en) 1997-07-29
PL321320A1 (en) 1997-12-08
CZ229897A3 (en) 1998-02-18
AU4637496A (en) 1996-08-21

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