SE545800C2 - Heat recovery in a calcination system - Google Patents

Heat recovery in a calcination system

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Publication number
SE545800C2
SE545800C2 SE2250682A SE2250682A SE545800C2 SE 545800 C2 SE545800 C2 SE 545800C2 SE 2250682 A SE2250682 A SE 2250682A SE 2250682 A SE2250682 A SE 2250682A SE 545800 C2 SE545800 C2 SE 545800C2
Authority
SE
Sweden
Prior art keywords
gas
heat
input
ter
aah
Prior art date
Application number
SE2250682A
Other languages
Swedish (sv)
Other versions
SE2250682A1 (en
Inventor
Roland Lundkvist
Original Assignee
Limearc Process 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.)
Filing date
Publication date
Application filed by Limearc Process Ab filed Critical Limearc Process Ab
Priority to SE2250682A priority Critical patent/SE545800C2/en
Priority to PCT/SE2023/050555 priority patent/WO2023234846A1/en
Publication of SE2250682A1 publication Critical patent/SE2250682A1/en
Publication of SE545800C2 publication Critical patent/SE545800C2/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2/00—Lime, magnesia or dolomite
    • C04B2/10—Preheating, burning calcining or cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/163—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
    • F28D7/1669—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing the conduit assemblies having an annular shape; the conduits being assembled around a central distribution tube
    • 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
    • B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
    • B01J6/001—Calcining
    • B01J6/004—Calcining using hot gas streams in which the material is moved
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/04—Regeneration of pulp liquors or effluent waste waters of alkali lye
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/12—Combustion of pulp liquors

Abstract

Embodiments herein relate to a heat recovery arrangement for heat recovery in a system 100 for calcination of lime mud. The heat recovery arrangement comprises: an inlet 402 for receiving incoming gas preheated by excess heat generated by the system 100; an expander 404 for expanding and thereby cooling by expansion said incoming preheated gas; a heat recovery tube 406 arranged in a container 408 comprising quick lime extracted from the system 100, into which recovery tube 410 said expanded and cooled gas is led and heated by the heat from the quick lime; a compressor 412 for compressing and further heating said preheated gas; and an outlet 414 from which said compressed and further heated gas is led out and thereafter decompressed by a diffusor 418 and reentered into the system 100, whereby heat generated from the calcination process is reused.

Description

TEGHNÉCÅL FiELE) išrtiootiirtierits iiereiri reiete in gerierei to systems, eoeeretus erio rnethoos for tiieriiiei treatment of soiio onernicei oornoouncis, cornrnoniy oeiieo oeicinetioii. in oertictiier, ernbociimeiits heroin reiete to systems eno rnethoos for ceicinetion of iime muo in e iime recovery cyoie in ceiitiiose irititistry.
Titus, emioooimerits herein reiete to: - oeicinetion system configuretions, 'â?-:rï ::§_;;:ï_~':f^~:w, eertiouieriy with en eiectrio ges oiesme generator enei more perticuieriy for ceioinetioit of iime; - e rneciie seoereteo heet exohenger for energy efficient neetiiwg of soiio cnemicei oomoounos, eertiotiieriy iirne inuti; - e heet pump errengerrient for recovering neet from neeteo eeicinetion orocess prooucts, such es coniootincis or ges or e niixture thsreof, oarticuieriy quick iirrie ene/oi* cerbon ciioxicie CG? output from e ceicihetion reector; end - injection errengernerit for injection of heeteo soiici citernicei cornoouno into the ceicinetioh reector, perticuieriy e chemicei conioouho in the form of iirne muo.
BACKGROUNÛ in the generei pursuit of eoeoting manufacturing enci process inoustrtf to be more environmenteiiy frienoiy sno to oeoreese inioeot on ciimete onenge there is e neeo for increasing ceoecity and efficiency in oeioinetioit process soiutions, for exerrioie for recovery of iirne in peoer rneiwufecturiiwg, cement industry or rnetei industry. in conventionei inciustriei processes ceicinetion is cerrieci out in furneces or kiins tistieiitf neeteo hy coinotistion or burning of fossii ftieis or oiofueis to achieve thermei oecornoosition of inout ineteriei. This conventionei kino of ceicihetion is eitvironrtienteiiy unfrienoiy sno ites untiesireo irnoects on oiirnete change. Qtner orewhecits ere for exernpie that the equipment is huiky, the process time is iong, the process is oifficuit to oontroi enci investment costs for insteiietioit is hign.
Et hes been proposed in patent btibiicattohs tftftl) 62/'5196829 and *A10 ÛZ/'Gâßâfiš te ernbioy caicination by rneans ot etectrâcaiiy generated gas oiasma. Cernoared to caicâhatšort with traditionat “turnaces or idins, caicinatâort än a caicâhatšon reactor heated by eiectricaâty generated gas oåasnta offers inter atia the toitovviitg advantages. Caoaeity can be increased än for exambie by tuti scaie debioyrnent or in existing caicinatšon faciiities by deoioymertt ot subbiemeittary srnaiter rhoduäes ot eiectricat gas titasrria catcinatory systems. Separation ct carbon diexide CÛIZ can be conducted vväth a high degree ot ourity at iovv cost. Heat can be recovered to a higher degree. Lovver ânstatåatien costs. Further advantages incidde higher energy etiiciertcy, iovv degree ot ernisstoh, rapid process controi and oossibitâties to ntake the vvhote iime recovery cycåe mere efficient.
QBJECT Et äs a geherai object ot the present inveritäort to provide improved caicination system contigdrations; s: for etectršcaiiy heated caicination. ivtore oartäcutar objects concern improved heat niariagemeht in the caicârtatien process as vveit as improved rnateriai and media ttevv in the caicšnation process. SUMMARY The above âridicated and other objects are achieved by embodimeitts ei ceictrtattoh systems ~*:::ï~':š:“i: šffirï rïiñtïï"ï~':rf;t described herein.
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BRÉEF DESCRiPTiON GF DRAWÉNGS Erneoeirnehts oescrihee hereih tyiii ee further exeieineo tyith reference to the aeeerhoahyihg orawings, wherein: FiG 'i shows e sehemetic overview of a oaioihetioit systern in acoorcianee yvith exenteiifyihg ernhooirnents, Fitš 2A ahe B show erhhooirhents of a oaiciitatieh system tyith exehieiifyiitg erttoooirttents of injection arrangerhents.
FiCš 3A arto 35 show erheooirttents ot a ceicinatiert system with exernoiifyfing emhooirnents of meeia seeareteo heat exohanger.
FEG 4 sitows show eitthoeiittehts of a eaieinetioit system with exemeiifyihg erneottirnents of a heat reeovery arrangemeht.
DETAÉLED DESCREPTEÜN Fiíš t shows a seheihatic overview ef erhheoirneitts ef a oaioiitatien system eonfigtiree for earryihg out emoociiittents of eaieination ihetheos, here exerneiifiett ey en aoaetatioh to caieiiiatien of time inuti, for exarhete epeiicaoie in a iime reeovery eyeie ih eeiiuiose inoustity. i-iowever, entheointertts are generaiiy useahie ahoíer eonfigurehie for oaioihatioh or other therrhei treatment ot other iheet hteterieis. in FiG t, system eonteonents cohterised or eetienaiiyf cohterised in erhhociihtents are sehentatieaiiy shown with arrows inciieating fiow ehahneis for eornihiinicating er transoorting materiei such as seiie oonteoenes arta/er gas ene/or heat eetweeh said cerhoehents. Deteiis erawh tyith ihterihittent iihes inciieete oetionai features ih aociitiort to tite configuration of rhain emooeirhehts ih ttiiiy erawn iihes. FiG t aiso serves as a sehehiatie fiew chart fer erneoeiihents of oaicinatieh ntethoes.
Caioinarioii Tnerrnai treatniertt et a seiid ehernieai eerripetirtd is eernrneniy eaiied eaieirtatien. in such a precess the centpeund is heated te high temperature heiew the ineitiitg peint ei the seiid enerriieai eernpetiite generaiiy under restricted sueeiy et anthient exygen. "ine generai eureese rnay hete achieve tnerntai deeerneesitien aneier te renteve irnptirities er veiatiie siihstanees.
Caieinatien ef lime Caieirtatien ei iirne, in aeeerdanee with erribedirrients diseiesed herein, is ter exarneie aeeiieahie in iinte resevery eyeies in preeess industry such as in the eeiitiiese industry, in tite eernent industry er in the rnetai industrtn in such iirne reeevery cyeies iirne eernerisiitg crystai terrns et eaieiurn earhenate (CaCÛiå) is therrnaiiy deeentpesed te eaieiunt exide (CaO), aise eaiied euiek iirne, and earieen diexide iCÜZ). The eaieinatiert reaetieit is Caiïlüšis) Caüis) + Ctfiig), witere (s) denetes seiid eentpetiiwd and (g) denetes gas ferrn eerneeund.
Fer exarnpie, in the eeiiiiiese industry iirne rnud is a ey-prediiet ehtained in puip iniiis as part et' the preeess that turns weed inte euie ter paper. in a puie rriiii, weed chips are eeeited with sediurn hydrexiee te extraet the vveed tiner used te snake paper irern the iignin titat einds the weed together. Üuring this preeess, sediurn nydrexide is converted te sediurn careenate. Caieitiiit exide, aise knetvrw as etiiekiirrie, is then added te eenvert tite sediurri earhenate hack te sediurn hydrexide in erder te use it again. in the erecess, eaieiurn earhenate in the terrn ei iirne rnud is ehtairted. Lirne rnud is rriainiy eaieitint earnenate mixed with water “terrnirtg a siedge. The iirne ntuci is then eaieined te retrieve eaieium exide in a iirne reeevery eyeie. Betere eaieinatien, the iirne ntud is ereteraniy ditied te an extent suitanie ter handiing in eenneetien tirith and in the eaieirtatien erecess. Fer exanipie, the ineut rriateriai seen as iirne er iirne rnud rnay ne puiverized inte a eewder in eenneetien ifirith the drying. Sirniiar ereeesses are as ntentieited appiieahie in etner industries.
Caieinatien et eaieium earhenate begins te eeeur at aheut Qtit) degrees Ceisiiis, and nerrnaiiy eaieinatieit takes piaee at ternperatures in the range Qütid iišti degrees Ceisius, wherehy eaieiunt exide and earnen diexide is “iernned "the eaieirtatien reaetien is reversihie, and in erder te aveid reternitiiatien et caiciurn carhenate in the presence et earhen diexide the ternperattire ntust iee ntaintained aheve the eaieinatien ternperature. With temperature raising te aheut ittiiš degrees Ceisius šfi anci aheve the eeieitirtt oxicie sinters. in the sintering ereeess the eaieium exide is eeineaeting in the ehenemeheh that eaieium crystais are eeiiaesed and terrning e seiid mass et materiai. The rate et the sinteririg is increased with higher tenieerature. Furthermore, tvater verser (hereih aise eaiied steern) rnay he useei es a oateiyst ter sintering. On the ether hand, in erder te aveie sinterihg the ereeess sheuie he keet tree trem water vaeer. in the eeicinatieh process, carhon diexide C92 is reieesed trem the eaieium earhenate and atter sintering the eaieium exide is mere stehie. Atter such e eaieinatien ereoess et time input rnateriei coinerisihg oaioiurn earhonates being converted inte euiek iime, i.e. eaieiunt exide, the quick iime is usueiiy siaited with green iietior. ineut ter materia! te be ttierrnetiv' treated ev eaíeinatieri As shown in iïtG t, an emhediment et a oaicinatien system tet) ooinerises an ineut te? ter materiai te he thermaiiy treated, ter exameie an input in the term et a time mue sterage eentainer. Tyeicaiiy, iiiput materiai such es dried iime rnud is eeeerttntedated in the input 162 ene eernrnunieated vie a vaive (net shewn in FiG t) te a media seearateci heat exchanger tee. thus, ernhedirnents et the caicinatien system eemerise en input tGZ ter receivirtg ineut ntateriai, ter exameie in the term et time mue. Ertieedirtients et a eaieinatiort metheci eernerises receivirtg input rtiateriai in the term et iirne rnud.
Emhedimeitts ter iime eaieinatien mey he eentigtireci ter ineut rnateriai in the term ot time raw rnateriai, which hereih is materiai eernerising eaieium earieenate containing minerais er suhstahees such as iimestohe, iirne siudge, deioittite, oaioiurn eentaining siudge. ít/tedie seeeireted íteat exehaneer The etireose et the media seearateci heat exchanger tet is te raise the tenteerattire ot the input inateriai ttrithetit reeireuiatien et meteriai, ereterehiy hy using heat trem heated eaieinatien ereeess ereeuets ehtained devvnstream in the caiciriatien systern. Enthedinients et the caioinatien system tet) corrierises a media separated heat exehanger 'iQ-ri eeupiee te said iheut and eentigureci to eenduet iheut rnateriai in a eiuraiity et eitanneis, ter exameie tuhes. Emhociiments ot a eeicinatioh method eenterises eeneuctiitg said ineut rnateriai in e eiuraiity et ehenneis et e media seearateci tieat exehanger titt. input materiai, sueh as time mud, passes through and is heated hy the rnedia separated heat exehanger tdri, and is output to an injection arrangenient tue via an eutiet (net shown) trem the media separated heat exehartger tufft. in a centiguratien ot the caicination system appiied ter iirrie recovery, the input materiai in the term et time rnud preterrahiy and ideaiiy heids a teniperature in the range ot ätit) degrees iíleisius when it ieaves the media separated heat exchanger ttïili.
The media separated heat exohanger "itltrt eptienaiiy comprises an iniet ter a driving gas suppiy tiliš eentigured to enahie teeding ot a driving gas at a pressure in the range et t ata (atrnespheric pressure aeeve vaeutirtt). The purpose et the driving gas is to drive the input materiai, in partieuiar input materiai oomprising a soiid cernpeund, te rrieve through the media separated heat exchanger ttia. in emhedirnents ter exampie adapted to eaicination et iime, the driving gas is oarhon diexide (ICQ er steam. The driving gas is in erneedirnents reeycied careen diexide (EGR reoovered trom the caicination preoess. in emhediments adapted ter input materiai in the term ei generaiiy dry iime mud, remaining meisture in the input iime mud may transterrn inte steam in the media separated heat exchanger, tvhieh steam serves as driving gas itseit er in addition te turther suppiied driving gas. in erneedirnents, a seieetien et ene er mere aetuaters, preteraeiy eeupied te a eentroi unit 124, are eentigtired ter eentreiiing ene er mere et: ~ The teeding et input rnateriai, tor exarnpie hy irieans et the apove rnentioned vaive (net sitetfirn in iïiG t) ter communicating iriput materiai inte the rnedia separated heat exehanger tea.
- The distribution et input materiai inte er within the media separated heat exchanger tG-t hy means ot a distrieutien mechanism.
- The input et driving gas trem the driving gas suppiy 'itfiö ter eentreiiing the veieeity et mevement ot input rnateriai transported through the media separated heat exohanger. input rnateriai, such as time mtid, is in emhedimertts eendtieted threugh a piuraiity ot input materiai tupes (not shevvn in iïiG t) ot the media separated heat exchanger teli. The input rnateriai tuhes are eentigiired in the media settarated heat exohaitger tort- such that a het medium conducted threugh the media separated heat exohanger “itirt transfers thermai energy hy heat eenveotion and heat radiation te inout rnateriai oassing through the input rnateriai ttioes. in exampie emioodiments, the media seoarated heat exehanger tG-t is provided trvith a oavity surrounding the ihout materiai tuioes artd such that hot nteditirtt through the media seoarated heat exehanger comes into contact with said tuhes. iššmhodimertts ot the media seoarated heat exohanger toa are shovviw in Fitš 3A and SB. Fitš. 3A and 38 shovv a media seoarated heat exehanger 'itliri tor use in a system tot) tor oaioinatioh ot iime mud, or in any other system tor heating ot tina- grained soiid materiai, in aooordartee vvith emoodiittents herein. The rnedia seoarated heat exohanger ttiri oornorises ah outer sheii BGZ and one or more tuhes Etta arrahged inside the sheii EGR. in emioodiments, a rnedia seoarated heat exohanger “tort- tor use in a system tor saioiitation ot iime mud is provided. The media seoarated heat exohanger toa is arranged to heat iime :hud hy heat transfer trom hot gas mixed vvith oaioium oxide. The media seoarated heat exohahger oornorises ah outer sheii EGR, one or more tuhes (iQ-t arrahged inside the sheii 3G2. A a tirst medium tor heat transfer is ted into the tuhes Sdf-i and tiovvs during heat transter. A second rnediurn tor heat transfer tiotvs outside the tuhes. "the tirst medium rnay he hot gas mixed with eaioium oxide and the seeortd medium may he iime rnud. Aiternatitfeiy, the tirst medium may he iime mud and the second medium may he hot gas rnixed vvitit oaioiuht oxide, in emhodiments, a media seoarated heat exohahger “itia tor use a system tor saisirtation ot iime rhud is provided. The ntedia seoarated heat exohanger 194 oontorises an outer sheii 3G2 and one or more tuhes 364 arranged inside the sheii ištiíâ. Lime mud is ted into the tuhes 364 tor transport during heating. The media seoarated heat exohanger ttliri further oorhprises one or more primary iriiets 396 tor teeding heated gas used tor the heating ot the iime ntud. The heated gas is received trom a oaioination reaetor andior a eyoiohe eomorised in the system tor eaieination ot iime mud. “the media separated heat exehanger turther eomorises ah outiet 398 tor teeding heated iime mud into the reastor ttitš. in ernhodirhents, the rhedia separated heat exshanger toa turtiter oomorises a distrihutor (ätt) tor teedirig and distrihuting iime mud into the one or more tuhes Stift» The distrioutor 31 Ü may he vihratihg, whereioy the iime mud is eveniy soread into the tuhes Tvåfat. The distrihutor 31 tt may “iurther he arrahged to separate iarge partieies trom smaii, vyherehy tine-grained partieies are ted inte the one or more tuhes The media separated heat exchanger ”itirt may ttirther oontprise one or more secondary iniets 312 tor teeding heated gas trom an exterhai suppiy into the exehanger. Therehy, the tioiw oi heated gas and the temperature in the heat exehanger may he controiied in a more accurate way.
The one or mere tuhes íštša niay he provided with one er more moveahie ehaihs arranged on the inside ot the tuhes iida. Therehy a turhuient tiovv ot the ted time med is achieved. The inner side et the sheii BQÉ may he previded with irreguiarities in the surface, wherehy a turhuient tiovv ot the heated gas is provided. Turhuient tiow is advantageous compared to iaminar tiow sinee the exchange ot heat wiii he intproved since the time tor the iirrie mud te pass the ttihes 394 wiii he ionger, and the contact area ter the ditierent ntediunt to exchange heat irvith eaoh other vtfiii he iarger.
The heat exohanger vtforits as toiiotfirs. tšried iinte rnud, er any other soiid rhateriai, in the torm of smaii particies is ted into the tuhes Btili- wiiieit serves tor transport et the time med during heating. it may he noted that the rnateriai as weii may he coeied. As ean he seen irern the figure, the iinte rnud may he ted into the tuhes tfia a distrihutor tor teeding and distrihtiting iime mod into the tuhes at the upper ends. The distrihutor may he arrahged to move tor exampie ih an oseiiiating rttovemertt or may he arranged to ntove hack and torth in order to distribute the iime med eveniy in the tuhes. The distrihutor rttayr turther he provided vvith a separator eehtigured to separate iarger partieies ot the iirne med trorn srnaiier. The rnore even sized partieies and the rriore even ted into the ttrhes, the hetter pertorrrianee ot the media seoarated heat exehanger the.
The time ittud is then rrioving inside the tuhes towards the ievver end and at the same tirrie the tuhes and thus the iirne ntud is heated. To aohieve as ettioient heat transter as possihie, the iime med may move aieng the inside of the tdhes in a turhuient tioiw. This may he achieved hy a configuration tyhereiit that the ttihes are provided with a chain, er a wire or the iike, on the inside whereioy a turhiiient iiow et said ted time mud is achieved, The media separated heat exehanger tha is turther provided with one or more primary iniets terteedirig heated gas used when heating the time med in the tcihes. É-i The heatect gas is received from a eateihatieri reaetor arta/er a eyetene eemprisee in the system tor eaieihatieh et time muct. The primary ihiet, er intets, is previetee in the iewer part et the sheii ot the media separatect heat exehahger titt. The heatee gas, which rhay ttave a eehteht et putverizee sotie rhateriai, is Eee into the sheit via the primary intet, er iniets, ahe then moves upwartts inside the heat exehahger. Heat wiii he trehsterree trom the heatee gas vie the tuees to the iime rhuci. Te eehieve as etteetive heat transfer as possihte aho to prat/ent teutihg on ihner surtaees er even eieggihg ot the tievv paths, eiso the heateo ges may meve in a turhtiieht tiew ihsicie the sheit et the heat exehahger. tt is te pe hetee that ih the heat exehanger 'itIt-fli, the time must rhay tievi/ in the tuees anti the het ges may tiow eutsicie the tehes. Aiternetivety, the hot gas inay ttetv ih the tupes, and the time muct may ttettr oetsiee the tutees. This Witt he expiaiheo rnere ih ttetaii tater.
The oeieihetioh reaotor is ih the exemptityihg tigures shevvit as a piesma reaeter, put the meeia separatee heat exehanger may he used together with ahy type ot eaieiitatioh reaoter. irfieetieiri arrahgemeht Einheoiinents et the ihieetieh arrahgemeht ttttš are shevvh ih iïiG 2A ehoi EB. The ihieetieh arrangerheht “ttiß is eehtiguree te eenvey anti inject the input rhateriai, ter exampie heateo time med, ihte ah eieotrieaiiy heatetti eateiriatioh reaeter ttiå. The ihieetieh arrangerheht is ih eertaih emeociirheiwts eeupieei te a partioie separater t ti). Emheetimehts et the eateihatiert system titt) eomprises ah inieetien arrahgernent 'ttfitš oentigurett te receive input materiat trom the iheeia separated heat exchahger “iürt ane to inieet ihput ihateriai inte ah eiestrieaity heatett eaioinatieh reaeter 198. Eittoeoiittehts et e oatoihetieit methoet eemprises ihieetiitg input ittateriai ihte ah eieetrieaiiy heatee eateiiwation reaster H išhtpotttihteiwts ot' the ihieetien arrahgemeht “ttttš eeihprises ah intet ter an ihieetieh ges stippty tu? oohtigureci to ehahie teeeihg ot ah injection gas et e oohtreiiaete pressure, ter exampie in the range et “hå ata (atmespherit: pressure above vaeuum). The purpose et the injection gas is te centret the ihjeetieh rate, the ihieetieh pressure, the distribution aha/er the temperature et the pre~heatee ihput ntateriat injecteo into the eteetrieaiiy tieateci eateinatieri reaetor 198. tn emeectimehts, the intet ter ihieetien 1G gas stiooiy is controiiabie by one or rnore actuators, breterebiy coupied to controi unitt2o. in embodiments tor exampie adapted to caicination ot Einte, the injection gas is carbon dioxide COQ or steam. Tiie injection gas is in ernbociirnerits recycied carbon dioxide CG? recovered trom the caicination process.
Entbodimertts ot' an injection arrangentent ttššš in a caiciitation system ttIitIi contorises an injector iniet 292 contigureo to receive oreheeted inbut rnateriai, for exampie time rriud, trorn a ntedia seoarated heat exchanger “E04 into a tiuid conductor contigured tor transterring said preheated inbut rnateriai to an injector ESS; said injector EGS being contigureo to inject said preheated materiai into an eiectricaiiy heated caiciriation reactor too; and an injection gas to? supoiy contigured to stipciy gas tor transter and injection ot input rnateriai into said eiectricaiiy neated caicination reactor 168. in einbodiinents ot the injection arrangernent ttââ the injection gas tili? is preheated in an injection gas tube Ett) conducted titrougit the media separated heat excnanger tG-t. in embodiments coinbirted with a particie separator the injection arrangentent tiïitš is contigured such that said iniet ZQZ is oositioneci in a cavity contigured to contmunicate oreneated input materiai trom said rnedia seoarated heat exchanger ttifi to a oarticie seoarator t tt) anci is contigured to receive a rising tiow ot oreneeted input ntateriai in a strearn ot injection gas ttliï. The injection gas to? is in such entbodintents suppiied in a tiow such that srnaiier particies are Eitted by the injection gas stream. This kind ot configuration is stiitabie in embooiments tirherein the injector 2% is contigured to inject said preneated input inateriai into a forma 2t4 ot an eiectric oiasrna generator 213 of said eiectricaiiy neateci caicination reactor in other embociiments ot the injection arrangernent 166, the injectoi' 298 is contigured to inject the breiieated inout rnateriai into a caicirtation charnoer 2ttš ot tiie eiectricaiiy neateci caicination reactor 198 in an input rnateriai stream tarigentiai in reiation to a gas oiasma stream generated by an eiectric oiasrna generator 2t3 ot said eiectricaiiy heated caicinatiori reactor tGS. in ernbodirnents ot tiie injection arrangentertt 105 the injector iniet 2G2 anci an outiet 2t8 tor said injection gas suopiy is positioneci at an outiet 22G ot said ineciia sebarateci heat excnanger tue.
Particie segariatoir' The oartieie seoarator 119, aiso shovvn for exameie in Fig 2A, is, in ertthodirttehts vvhere it is ooniorised, eonfigured to separate iarger and heavier iumos ot preheated rttateriai, such as iime mtici, 'frortt smaiier and fighter oartioies oi rnateriai. The oarticie seearator t "iii is En errthodimeitts devised suoh that iumos ot ntateriai hy gravitv taiis into a iump ooiiection container and soon that srnaiier oartieies are iifted hy a strearn oi oreheated gas and input inte the Enjeetor arrangement itiß.
Errihodirnents of the oartioie seioarator is provided with a oontroiiahie suopiy of heated gas. in emtiodintents the supeiy ot heated gas is controiiahie hy one or more aetuators, preterahiy oouoied to controi unit tält. in emeodiments, the gas pressure in the particie seoarator is oontroiied hy oontroiiing the driving gas suepiy 'itliš on the eoid side oi the media seearated heat exoiianger toa.
Einhodiihents of the eaioination systern ttiti eomorises a eartieie separator iii) ooueied to the injection arrangement too and oontigured to separate iarger iuinos and smaiier oartioies ot soiid eorrioound En inout materiai, and to oonvey said srnaiier oarticies in a gas tiovv to said injection arrangement ide tor injection into said eieotrioaiiy heated eaieirtation reaetor ttšå. Ernhodirnents oi the oaioinatiort method eontorises seoarating, En a oartioie seoarator iii) ooueied to the injection arrangernent tiitï, such that iarger itirnos and smaiier oartieies of soiici oorneound in inout ntateriai are seearated, and eoriveying said smaiier oartieies En a gas tiow to said injection arrangement tüíš for injection into said eiectrioaiiy heated oaioination reaetor ide.
The oartieie seoarator may ide eonfigured or oontroiied such that oartieies oi ore~ heated input materiai vvith a size En the range of i to iíiiliü rniororrieters are input to the eaicination reaotor 198 via the injection arrarigemeitt itiß. With ooviider form the contact surface ot' the Enotit materiai vviii become very iarge, tvheretny the contact time with heat in the oaioinatioit reaotor can he rninimized. Eiectrieaiiv treated eaieiriation reactor' The eieotrieaiiy heated eaioination reaetor iiiå is thus eontigured to receive a tiow ot ore-heated ihateriai, such as time mod, front the inieotor arrangerrient and exoose the materiai to heat generated hy eieotrioityf. Ertthodirttents oi the eaicination system eomorises a said eieetricaiiy heated oaioination reaetor “iüå being contigtired to eonvert input rttateriai received hy rneaits of said irtieotiort arrangernent ttštï into 1.caiciriation process products oornprising a soiid oornpound, for exarnpie En the forrn of oaioinnt oxide, and a gas, for exarnpie in the forrn of carbon dioxide. Ernbodirneitts of a oaioination method eornprise oonverting, En said eiectrieaiiy heated oaieinatiort reaotor 198, input ntateriai into oaieinatioit process products oornprising a soiid eontpouiwd, for exarnpie in the forna of eaieiuin oxide, and a gas, for exarnpie in the forrn of carbon dEoxEde. in einbodiittents, the eaieination reaetor is eieotiricatiy heated by an eieotrEo gas piasrna generator eonfigured to inieot hot gas piasrna, suoh as carbon dioxide piasma, into a caicination ohainber of the caicination reactor tüâ, and possibiy rriaintain production of gas piasnta En the eaieiitation ehainbei” front gas, suoh as carbon dioxide C92, formed in the caicination process. in ernbodirnents appiied for heat treatrnent of time med, the iirne ntud that Es exposed to the heat of the gas piasrna is converted to oaioirtation process products in the forrn of oaioiunt oxide, aiso eaiied gtiiek iErne, and oarooiw dEoxEde C02. The oaioiiwation reaetor tott Es further configured to exEt the heat-treated rnateriai and if appiieabie caicination process products, such as quick iErne and carbon dioxide, to a first (th) separator An eieetrio gas ptasnta generator (itot shown in FEG t), oornprised in ernbodirnents of the caicination reaotor, is devised to stippiy energy via an eieotrio arc formed between eieotrodes. Gas is ionized and an energetic gas piasnia is forrned. íšuoh gas piasrria norrnaiiy has a terriperature En the range of 3QGG~4GÜG degrees (ïeisius or rnore at the discharge of the gas piasnta generator. The gas piasrria generator eontprises a :tezzie eaiied fornia eonfigured to inieot gas piasitta Ento the oaioirtation reactor H38. Pressurized gas ntay be stippiied to the fornta to overoorne a pressure drop oeourring over the gas piasrna generator. The pressurized gas rnay be used to oontroi the tentperattire of the gas piasrffa.
Preheated input rnateriai is En the oaioinatiort reaotor rnixed with or exposed to hot gas frorn the piasrna generator. The eaieiitation reaotor is in entbodintents eonfignred to baiartoe the exposure of the pre-heated input ntateriai to heat at too high tentperattire. For exarnpte, for input rnateriai eontprising EErne vvith eaieiurn oarbonate exposure to eaieination ternperatures exeeeding “iêtltfi degrees Ceisius ntay entaii risk for Enactivating the iirne, aiso caiied dead burning of the iiine. Cortfiguriitg the oaioination reaetor suoh that the input rnateriaE tfvhen inieeted in the caiciiwation reactor is in powder torni tiius having a iarge surface and such that the potvder torrned input rnateriai is exposed to heat tor a iirnited period oi tirrie enahies that inactivatiori ot the iriput iirne is avoicieci.
Cšerieraiiy, the input rnateriai is caicinated during tragnteitts ot seconds to a tevv seconds. Caicinatioit is preterahiy carried out at atrriospheric pressure, or at a srnaii Otitšiïißftšââtifê Ûi' UFiiCÉÉEEFfiIBFQSSLEFQ. ih other enthociirnerits, the caiciriation reactor H38 rhay he etectricaiiy iieated using resistive teohnoiogy, microwave or radio wave technoiogy, or other eiectrioaiiy driven iieating.
First sepairetrßr The tirst (ist) separator 'itä is contigtired to separate restiiting process products generated hy the heat treatment ot the inateriai in the caicihation reactor 168, such as sotid caiciitation process products in the torrn ot caiciunt oxide (otiick iinie) and gas torrried caicination process products in the torrn ot carbon dioxide C02 when appiied in a iirne recovery cycie. The teniperattire ot the caicinatioh process products received trorn the caicinatiort reactor 'ide is in iirne caicination ernhociimeitts exceeding Sot) degrees (ïeisius. ih the separator 112, iarger andfor heavier particies in the rnateriai 'ttotfv input trorn the caicination reactor 1:38 are separated trorn srnaiiei' and/or iighter particies and gas. The iarger and/or heavier particies are coiiected in a coiieotion horiper (not sitowh in iïiG t), and residuai caicination process products in the torrn ot gas usuaiitf together with a certain arriount ot srnaiier andior iighter particies are conducted out trorn the iirst separator 112 to a tirst (tft) heat recovery arrahgenierit ttß. in errihodirnehts the tirst separator 112 is a cyoione, an eiectric tiiter or a sedintentatioit device or sedirnentation arrangerneitt.
Ernhodirnents ot the caicinatioh system 'itfiti cornprises one or rnore separators 112118 contigured to separate said soiid cornpouitd in the torrn ot caiciunt oxide and gas in the torrn ot carhon ciioxide ot said caiciriation process products. Ernioodirneiwts ot a caiciitatioh rnethod corriprises separating, in one or rnore separators 112, tttt said soiid coinpound, tor exantpie in the torrn ot oaioiurn oxide and gas, for exampie in the fornt of carbon ciioxicie of said caicinatioh process products.
Emoodiments of the caicination system tott comprises: a first separator f ”i 2 configured to receive caicination process products from the eiectricaiiy heated caicihation reactor tott and to separate soiid compound, for exampie in the form of caicium oxide, from the gas, for exampie in the form of carhon ciioxide, of the caicinatioh process products. Emhodirnents of the caicinatiort method, oomprise separating, in a first separator ttíâ, caiciitation process products received from the eiectricaiiy heated caicination reactor (ftlttš) such that soiici compouhci, for exampie in the form of caicium oxioe, is separateo from the gas, for exampie in the form of carbon dioxide, of the caicihatioit process products. th emhodiments appiied for iime recovery from a time rnud, the residuai caicination process products output from the first separator t t? wifi comprise and usuaiitf mainiy cohsist of carpon ciioxide C52 ahci finegrained resicitiai caicium oxide (quick time), in emidodimehts of such iime recovery, a separation ratio ih a cycione variant of the first separator t f 2 wouid for exampie he in the range of ïš “š/t- of the caicium oxide (quick time) input from the caiciitation reactor tiltâš being coiiected in the coiiection hopper and in the range of 25 “š/t- of the caicium oxicie (quick time) being output from the separator t t2 together tivith carhon dioxide CQE. First ifeaf recovertf arrahoehteitt The first (tft) heat recovery arrangement 116 is configured to recover heat from the residtiai caiciriation process products output from the first separator t t2. Empodimehts of the caicirtation system cornprises a first heat recovery arrangement tttš configureo to receive said caicination process products, to extract heat from said caicihatioit process products and transfer said extracted heat to said input materiai in said inedia separated heat exchanger titt. fširthooiittents of a caicination method contprise extracting, ih a first recovery arrahgernent ftfš, heat from said caicination process products and transferring said extracted heat to said ihput ntateriai in said nneciia separated heat exchanger tuff. in emidociimehts the first (tft) heat recoveiy arrangement tftš comprises a fiow iine configured to conduct a fiow of residuai caiciitation process products at a first higher ternperature into the media separated heat exchanger t G4, through said Iifš media separated heat exchanger titt where residuai caicirtation process products transter heat to input materiai moving through said media separated heat exchanger ttifi and out ot said rhedia separated heat exchahger ttifi at a second tower tentperattire. in errihodirrieiwts the (181) heat recovery arrahgement tttš aiternativeiy or additionaiiy cornprises a heat pump (het shown in Fiíš t) centigured to extract heat troni the residuai caicination process products and preteraoiy to trahster said extracted heat to the rriedia separated heat exchahger.
Garnera! entbodintehts of caicinatioit svstern and caicinatioh :rtethtid išmhodiments ot a caiciriation systern tot), cornprises: an input m2 tor receiving input rnateriai, tor exaihpie in the torrn ot iime rnud; a media separated heat exchanger 1tIi4 coupied te said input and centigiired to conduct input rnateriai in a piuraiity ot channeis; an injection arrangernent “iütš contigtired to receive input rnateiriai trorn the rnedia separated heat exchanger tue and to iniect input rnateriai into an eiectricaiiy heated caicination reactor 168; a said eiectricaiiy heated caicinatien reactor tott being contigured to cohvert input rhateriai received hy rneans ot said injection arrahgerheht 'ide into caicinatioh process products comprising a soiid oornpouitd in the torm ot caicitirtt oxide and a gas in the torm ot carhon dioxide; a tirst heat recovery arrahgement tttš cohtigured to receive said caicinatiort process products, to extract heat trorn said caicination process products and transter said extracted heat to said input rnateriai ih said ntedia separated heat exchanger tue; and ohe or rriore separators 112, titt contigured to separate said soiid oonipound in the torrn ot' caiciurn oxide ahd gas ih the term ot carbon dioxide ot said caicination process products. išmhodiments ot a caiciriatioh method, corriprising: receiving input materiai, tor exarhpie in the torrn ot iirne rnud; cendticting said input rnateriai in a piuraiity ot channeis ot a media separated heat exchanger toa; injecting input rnateriai inte an eiectrioaiiy heated caicination reactor 168; convertihg, in said eiectricaiiy heated caicination reactor 198, input rnateriai into caicirtatioh process products cornprising a soiid contpound in the torrn ot oaioiurn oxide and a gas in the torni ot carbon dioxide; extractihg, in a tirst recovery anrangemeht titš, heat trorn said caicination process products and transterring said extracted heat to said input niateriai ih said media separated heat exchanger 1Ci4; and separatihg, in one or more separaters 112, 118, said soiid eerneeund in the torrh et eaieiurh exide and gas in the torrh et carhen dioxide et said oaioinatieh process products.
Second hetat reoeverv arraneerneht Errihedirriehts et a seeend (Qtfi) heat recevery arrangerheht 114 are shown in FEG 4. A second (2111) heat reoevery arrahgernent 114, cemerised in certain enihodirnertts, is arranged te extraot heat trorn the tirst seearater 112. Such extraeted heat is carried ih a gas, and the thus heated gas ntay he used as inout into the injection arrangentent 106. "the seoond (ätit) heat reoevery arrangentent 114, the tiow ot extraoted heat and the 'tiow iines tor the heated gas are in the tigures drawn with ihterrnittent iines as to indioate eotiehai features. in ernhedirnents the heated gas trern the second heat reoovery arrangernertt 114 may he used as input te the inieotion arrangernertt 165 and/or into the oaioihatien reaeter tha. in ernhodirnents ot a oaioinatiert reacter with an eiectrio gas eiasnra generator the heated gas rhay ha used as ineut in er at the torrha where it en ene itand ooeis the gas eiasrna, and on the other itand aiso oentrihutes with usetui heat energy. in ernhedirhents the seeerwd heat reeevery arrangerrieht 114 is oohtreiiatiie hy ene er there aetuators, ereteraoiy oouoied to the oohtrei unit 124, with regard te ene er rhere eararrreters sueh as tiew, arrieunt et energy, teiheeratures and eressure.
Erhhedirriehts et the oaioinatieh systern 1Gu oorhprises: a second heat reeevery arrangenteht 114 centigured to extract heat front soiid eerneound, tor exarneie in the terrh ot oaiciurn oxide, et the caicirtatien oreoess eroeuets etitout trerh the eieetricaiiy heated eaieirtation reaoter 1Û8 and seoarateci trent the gas, tor exanteie in the torrn et oarhert dioxide, et the oaioinatien process oroduots, said extraoted heat ieeirtg carried hy a gas and inserted into the injection arrangernent 1 G Ernoedirnehts et the oaioinatien ntethod oonterise extraotirtg, in a seoohd heat reeevery arrangentent 114, heat trern soiid oentoeund, tor exanteie in the torrn ot oaioiurn exide, ot the eaieinatioh process products output trorn the eiectricaiiy heated oaieinatien reaoter m8 and seoarated trent the gas, ter exanteie in the torrn et carbon dioxide, et the oaioinatien process ereeucts, carrying said extracted heat ey a gas and inserting said heat earrying gas into the injection arrahgernent tïttiš f-i shews a heat reeevery' arrangement ter retise et heat in a eaieinatiert system, here exemptitied in a system ter eateiitatien et time med. "the heat reeevery arrangement eernprises an exeander ter expandirtg and eeeting ineeming gas and a heat exchange tuhe arranged in a eetteetien hehper ter gathering heat treated setid materiat, seen as eatetiim extde extraeted trern a system eentigtired ter eaieiiriatten et' time med. Expanded and eeeied gas is tee inte the tuhe and is heated hy the seiid eempeund, in this exampte eateium exide atse eatted etiiek tirne. The heat reeevery arrahgement tiirthei' eemprises a eernpresser ter eernpressing and heating the heated gas, and an intet ter reentering the eenipressed and heated gas inte the system ter eateinatien et time med, wherehyi heat trem the eateinatien preeess is retised.
Emhediments et the heat reeevery arrangernent 114 eernerises an intet rittë ter reeeiytitg tneerning gas trem the system 'ttïitt ter eaieinatien et iirne med. "the tneeming gas is preheated hy exeess heat generated hy the systern titt) ter eatetitatten et time indd. in a system "ttlttš ter eaieiriatten et time rniid, a tet et heat is generated in ctitterent steps et the preeess. Theretere, heat ter preheating the gas ntay he extraeted trern ditterent parts et the system titt). "the heat reeeveiy arrahgement ttffit turther eemprises an expancter 464 ter expancting and eeeting the ineerning preheated gas, and a heat ireeevery tehe 4% arranged in a eentatner »ttltåš eemprising eiiiek time extraeted trem the systern (ttštlt) ter eateinatien et time med. it may he neted that the heat reeetfery ttihe 4% rnay he arranged in any eentatner in the systern ttit) eemprising heated rnateriat. tn ernhedirnents, the expanded and eeeted gas is ied inte the ttihe att) and is heated hy the heat trern the quick iirne in the eentainer. "the heat reeevery arrangemertt 114 tdrttier eernprises a eempresser 412 ter eempresstng and turther heating said heated gas and an euttet 414, ter exampte eernprisiitg a dittuser ter atteviatirig the detynstreaiti ttihes trem exeessive pressure, trern vvhieh the eempressed and turttter heated gas is tee eut and reentered inte the system the ter eatetnatten et time nnid, tfirherehy heat generated trern the eaieiitatien preeess is redsed. “the eeritpressed and turther heated gas received trem the heat reeevery arrangement “ttrt may have a temperature et aheut “tütttt - "iištštt degrees Ceteius, and may he reentered inte ditterent parts et the system the, ter exampte inte the injection arrangement 'itšti er into the rnedia separated heat exchanger tG-f-i, or directiy inte the caicination reactor Steam ooiier Again reterring to FEG "i and FEG fi, a steam poiiei” 129, present in certain empodiments, is configored to extract remaining heat frorn the residoai caicinatiorf process products received trorn the first heat recevery arrangement and hetore residuai soiid cornpotinds is separated from gas in a suhseduent second separater 118. in time caiciitation enfpodintents the seiid comooond is caicitinf oxide and gas is carbon dioxide CÛZ. Steam generated in the steam ooiier f2tš is conducted from the steam hoiier f 2G, for exampie tor use te support processes in emhodiments ot the caicination systern or for use in other processes in a faciiity empioyiiwg einhodiiwtents ot the caicinatioh system. in emhodiments, oresstirized steam is generated producing tirocess steam or power. Povver may he produced in power generators for exarhpie in the form ot a ttiroihe. Tne terhperattire of the residuai eaicination process products entering the steam oeiied is ter exarnpie in iime caicinatien emioodiments tisuaiiy in the range of ßfoti-štio degrees Ceisios, tvhereas atter itaving passed the steam oeiier tät), the temperature ot the residoai caicinatieit process products may oe for exampie he in the range ot 2529 degrees Ceisios. išmoodiments of the caicinatieri system comprises a steam ooiier tät) contigtired te extract heat from caiciitation process products trom the the preceding heat recovery arrangement and te generate steam. išrnoediments of the caicinatiert method comorise extracting, in a steam ooiier 129, heat trorn gas of caicinatien process products from the one er more separaters and generating steam.
Second searrator The resiotiai caicirfation process products having passed the fti heat recovery arrangement iftš is conducted to a second (Em-i) seoarator itä centigured to separate residuai caicination process products. For exarnpie, remaining soiid confpeunds is separated from gas. in emoodiments the second (Ni) separator tfâ is a cycione. in ernioodirnents ot the caicination system configured for iirne recovery trom time mud, residuai caicium oxide is further separated frem caroon dioxide C Soiid cemoounds, such as eaieium exide in iime caicinatieit emhodiments, is coiiected in a coiiection hopper and the further cieaned gas, such as carpon dioxide (ICQ, is conducted to a fiiter arrangement 122 via an optionai steam hoiier 12G.
Empodiments ot the caicination system *tott comprises: a second eeparator 118 configured to receive residuai caicirtation process products otitput frorn the tirst separator 112 and from the first heat recovery system 116, said second separator 118 ioeing contigured to further separate soiid compound, tor exarnpie in the forrn ot caicium oxide, trom the gas, for exampie in the form of carhoit dioxide, ot said residuai caicination process products. Emhodimerits of the caicination method comprise separating, in a second separator 118, residuai caictnatton process products received from the first separator 112 and from the first heat irecovery system 116, such that further soiid coinpound, for exampie in the form of catcium oxide, is separated from the gas, tor exampie in the form of carbon dioxide, of said residuai caicination process products.
Fiiter arrangement The tiiter arrangernent 122 is configured to tiiter the gas component ot the caicination process products to a higher degree of purity before coiiecting, storing artdior using the output gas. ih iime caicination emoodiments the gas component ot the caicirwation process products is carbon dioxide (ICQ. in such emhodiments, the fiiter arrangement 122 wouid comprise a fiiter adapted to fiiter carpon dioxide CQZ. The fiitered gas component of the caicination process products is conducted to a gas output 124. *When the temperature ot the gas has ioeen decrease to a iow temperature ot around for exampie ätit) degrees Ceisius, textite tiiters may pe appiied.
The tiiter arrangemeht 122 is in emhodimeitts configured to fiiter out possihie dust and such irripurities stiti present in the gas output from the second separator 118. The tiiter arrahgerneht is seiected to tit to theten1perat1ire ieveis of the gas from said second separator Emoodtments ot the catcination system comprises a fiiter arrangernent 122 configured to receive gas of caicination process products, tor exampie in the form of carbon dioxide, from the one or more separators and to fiiter said gas to a higher degree of purity. Einoodiinents ot the caicination method comprises tittering, in a fiiter arrangement 122 gas ot caicination process products, for exampie in the torm of cerhon oioxitte, receiveci *irom the one or more seoeretors, such thet seio ges is tiiteree to e higher degree ot ourity.
Ges riutgut The ges outout 123 is oontigureo to receive the ges oontooneirit of the ceicinetion process products, ene is in eitierent einhoeiinents contiguree to store, tentooreriiy or tor e ionger term, or ooneuot the ges te the ceicinetion system itseit er to other systems eneíor processes. in time ceicinetion emiooeiments the ges coneucteci to the ges output 124 wouie he oerhon eioxiee C02, ene weute in emieoeiments he recircuietee to the ceicinetion reector.
Control uitit A controi unit tâß, coniorisee in ertihoeirtients, is contiguree to receive sensor signeis, to generete centret signeis ene to communicate centroi signeis through e controi oort 123 connectee to one or rnore signei iines 136. The one or more signei iines is schemeticeiitf ineicetee es en intermittent iine thet is connected te sensors eneIor controi ectuetors (not shown) et eitterent points ene components ot the ceicinetion system in oreer to controi various parameters.
Emheeimeitts et' the ceicinetion system tet) contorising e controi unit 126 communicetiveiy couoiee to sensors enci controi ectuetors enci contiguree to receive sensor signeis, to generete controi signeis ene to communicate controi signeis through e oontroi port “E28 oonnectee to one or more signei iines tät) oouoiee to seici sensors site controi ectuetors. Emooeiments ot the ceicinetion inethoe comorises in e controi unit ”i2tš oorrintunicetiveitf oouoiee to sensors ene controi ectuetors, receiving sensor signeis, genereting oontroi signeis enci communicating controi signeis through e controt port 128 cennectee to one or rnere signei iines 139 couoiee to seie sensors enci controi ectuetors. in ernooeirttents oi the ceicinetion system titt), the controi unit is contigureo to centroi one or rnere ot: driving ges siiooiy tee inte the meeie seeeretee heet exchenger we; irtieotiort ges suooiy ttfi? into the injection errertgemerit tütš; heeteo ges in the oerticie seoereter tttš; ges pressure in the ceicinetion chemher 168; enefor temoereture in the ceicinetion ohemioer ”itštt Emiooeiments ot the ceicinetion inethoo, further comorises controiiing one or more ot: driving ges suooiy tüö inte the media separateci heat exehanger tet; inieetieit gas suppiy (tuï) into the irtjeetien arrangement tee; heated gas in the partieie separater i tu; gas pressure in the eaieinatiert ehamher WS; artdier ternperature in the eaieination ehamher 'itfi The heat reeevery arrangement 114 oemprises an iniet fiu2 tor reoeiving incemihg gas trom the systern “iüíi for eaicinatioh et iime mud. The ineoming gas is preheated ey exeess heat generated hy the system ttitïi tor eaieirtation ef iirne mud. The heat reeevery arrangement 114 may further eomprise an expander 494 ter' expandiitg and eeeiihg the ineeming preheated gas and a heat reeesrery tuhe ride arranged in a container ritiê eomprising quick iime extraeted trem the system ttlti) fer eaieination ef iime inuti. The expahded and eeoied gas is ied inte the reeeveiy tuee 41 t) and is iteated hy the heat from the quick iime. The heat reeevery arrangement "ite may further eemprise a eompressor 412 for cempressing and further heating the preheateci gas and an eutiet 414 frem which the eenipressed and *iurtiter heated gas is ied out and reehtered inte the system “iíitli fer eaieinatien of iime rnud. Therehy heat generated frem the oaioinatien process is reused.
The ineerning gas may he earhert dioxide (ICQ with a temperature et appreximateiy Rett degrees and a pressure ef approximateiy 4 har (a). The etiteornirtg gas may have a temperature of appreximateiyr 'iišufi ~ tíšfiu degrees and a pressure et appreximateiy 2 har (a).
The heat reeovery arrangement ttri- cemprise a ditfuser 418 arranged te ditfuse the otiteornirtg gas frem the etitiet fitfi. Titanks to the diftuser, the gas is presented with a iewer pressure hut high temperature vvhieit provides ter a rriere safe seititien. The eempresser 412 ntay he arranged inside a housing 4212). The housing 42th preteets adjaeent equipment frem dangerous het gas with high pressure.
The feregeirig eiiseiesure is not intended to iimit the present diseiesure to the precisa terms er partieuiar tieids of use diseiesed. it is eententpiated that various aiternate ernhodiinents andier ntedifieatieits te the present emhediinents, »whether expiieitiy described er impiied herein, are pessihie in the tight of the diseiesure. Aeeerdirtgiy, the seepe et is defined eniy hy the aeeornpanying patent eiaims.

Claims (1)

'ä w äfarfïïaåâarxfšf:rašagašaswarzíhäng :få för xfšàrswwaáäåarvšfzhšffig i aa Såå; får šflaäcšharâswg av aar varaaaaíarxfšswašhgaaraarahšhgaifi C f-'ï-š šræaafaííar: ah; šhšagsa (åâšiš) aaaïízagzaïïfša av šfzkafhffiwaafzfša gas *íršw ayaïamaï (ííšüš för šfiašcšaarâswg av aar hamaaa šswkaaïhwaswaa gas fëafarhssa av åšxfasrakafcïiaxfarrsfia gaaararaa av (å Qíšjs för kašcšaaršawg av kaškašaaww, ~ aa axaafwiíar åaíša) får axpaïfiašah, aah aëršganam kyšfïšïfig; axpaswaâaa, av aààmaaa äakarahwaæwïša farvërawaa gas, - xfarmaaïafvšnhšswgaíash iaššàš), afwarahaa š ah hahaššara (éiüåš àmïahàääaswaa hraha kašša axíraharaa ayaíamaï QS) får šfiašcšaaršifig av kaškaåarh, š xfàškaa aïarwfšrmšfzgaíaja íaííšfa hšàrvafzaiæa axaaïrßaïarafša ash kyfšszïeš åafía år: aah varma av xfàrhnaa fràa aa? hraaaa kaškasw, ah karharaaafizr (kanwa-ršrharšag ash yfïíarššaaara våèrfïïfwšfzg av swašhswaa fåšrvarfswaa ~ aïšaap äšïfåßïgë, från všškaï swäraswaa karaprâmaraaa aah yïïiarššgara vêàrrhïša šacša Lai, aah aäfafïar iíakafïïprârïwaras av aa alšhïínsaar åaïåjš, aïarfara íëäšíšš šåër kašašharšhg :w kaškašaafïïi xfzarvšzå xfarraa gaaararaa š aaäcšnaršffigaaracaaaaæw aïararæxfaffiaa, \,fàrfï*=aå.ias'všfwhšhgaaïwïßrahâfïg åfä M) ahššgï kfaxf 1, aan šhkamfïwahaa aaaah kašašaxša (H32 aahfaššar vahzaswaswga. Varhïaaïarxfšswašhgaaswarahšng C ffš-f; aaššgï :wagaï av faragàaraaa krav, aan šrakarhïïïaarïaa gšaaara har ah åamaarzaåair av arhkršrïg LES -- EÜÛ araaaai* šlaåašas: aah aa ïryak av afakršswg “vfashïaaïarvšhfwšhgaahardhšhg ”safs araššgï :wagaï av hïasaaaaiwaa kraxfg aan Lhïgàaswaa gaaaa har aa tarhaaraïur av arhkhswg "å üíšü » çaaïšar íïaäašafia aah ah; 'ayak av amkfâag 2 haríafs. Vërrhaáäïarxfšraf:šswgaaaharaiswšrag “âafa aaššgï hàgaï :av íäšraggáäafwszïa kfaxfg :här kahïaraaaarï: ia? Eš ar aharaswaa šhuïš aa hašæša (ffš-Éíššfi'ä w äfarfïïaåâarxfšf:rašagašaswarzíhäng :få for xfšàrswwaáäåarvšfzhšffig i aa Soå; sheep šflaäcšharâswg of aar varaaaaíarxfšswašhgaaraarahšhgaifi C f-'ï-š šræaafáiíar: ah; šhšagsa (åâšiš) aaaïízagzaïïfša of šfzkafhffiwaafzfša gas *íršw ayaïamaï (ííšüš for šfiašcšaarâswg of aar hamaaa šswkaaïhwaswaa gas fëafarhssa of åšxfasrakafcïiaxfarrsfia gaaaraaraa of (å Qíšjs for kašcšaaršawg of kaškašaaww, ~ aa axaafwiíar åaí ša) sheep axpaïfiašah, aah aëršganam kyšfïšïfig; axpaswaâaa, of aààmaaa äakarahwaæwïša farvërawaa gas, - xfarmaaïafvšnhšswgaíash iaššàš), afwarahaa š ah hahaššara (éiüåš àmïahàääaswaa hraha kašša axíraharaa ayaíamaï QS) get šfiašcšaaršifig of kaškaåarh, š xfàškaa aïarwfšrmšfzgaíaja iaííšfa hšàrvafzaiæa axaaïrßaïarafša ash kyfšsz ïeš åafía year: aah warm of xfàrhnaa fràa aa? hraaaa kaškasw, ah karharaaafizr (kanwa-ršrharšag ash yfïíarššaaara våèrfïïfwšfzg of swašhswaa fåšrvarfswaa ~ aïšaap äšïfåßïgë, from všškaï swäraswaa karaprâmaraaa aah yïïiarššgara vêàrhïša šacša Lai, aah aäfafïar iíakafïprârïwaras of aa alšhïínsaar åaïåjš, aïarfara íëäšíšš šåër kašašharšhg :w kaškašaafïïi xfzarvšzå xfarraa gaaararaa š aaäcšnaršffigaaracaaaaæw aïararæxfaffiaa . ïaarïaa gšaaara har ah åamaarzaåair by arhkršrïg LES - - EÜÛ araaaai* šlaåašas: aah aa ïryak by afakršswg “vfashïaaïarvšhfwšhgaahardhšhg ”safs araššgï :wagaï by hïasaaaaiwaa kraxfg aan Lhïgàaswaa gaaaa har aa tarhaaraïur by arhkhswg "å üíšü » çaaïšar íïaäašafia aah ah; 'ayak by amkfâag 2 haríafs. Vërrhaáäïarxfšraf:šswgaaaharaiswšrag “âafa aaššgï hàgaï :av íäšraggáäafwszïa kfaxfg :here kahïaraaaarï: ia? Eš ar aharaswaa šhuïš aa hašæša (ffš-Éíššfi
SE2250682A 2022-06-03 2022-06-03 Heat recovery in a calcination system SE545800C2 (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3630504A (en) * 1970-01-05 1971-12-28 Dow Chemical Co Method of calcination and hydration and unit therefor
FR2321674A1 (en) * 1975-08-20 1977-03-18 Lambert Ind Heat exchange appts. for slurries or pulps - using two sets of tubes embedded in solid metal
US5378319A (en) * 1993-05-07 1995-01-03 Tran Industrial Research Inc. Lime mud calcining using dielectric hysteresis heating
WO2002096821A1 (en) * 2001-05-30 2002-12-05 Vattenfall Ab Method and device for calcination
EP1580511A2 (en) * 2004-03-24 2005-09-28 Coperion Waeschle GmbH & Co. KG Device for maintaining temperature of bulk material
US20150056125A1 (en) * 2006-08-25 2015-02-26 Robert A. Rossi Process and system for producing commercial quality carbon dioxide from recausticizing process calcium carbonates
US20200108346A1 (en) * 2018-10-05 2020-04-09 8 Rivers Capital, Llc Direct gas capture systems and methods of use thereof
US20200361819A1 (en) * 2019-05-13 2020-11-19 Carmeuse North America Calciner using recirculated gases

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3630504A (en) * 1970-01-05 1971-12-28 Dow Chemical Co Method of calcination and hydration and unit therefor
FR2321674A1 (en) * 1975-08-20 1977-03-18 Lambert Ind Heat exchange appts. for slurries or pulps - using two sets of tubes embedded in solid metal
US5378319A (en) * 1993-05-07 1995-01-03 Tran Industrial Research Inc. Lime mud calcining using dielectric hysteresis heating
WO2002096821A1 (en) * 2001-05-30 2002-12-05 Vattenfall Ab Method and device for calcination
EP1580511A2 (en) * 2004-03-24 2005-09-28 Coperion Waeschle GmbH & Co. KG Device for maintaining temperature of bulk material
US20150056125A1 (en) * 2006-08-25 2015-02-26 Robert A. Rossi Process and system for producing commercial quality carbon dioxide from recausticizing process calcium carbonates
US20200108346A1 (en) * 2018-10-05 2020-04-09 8 Rivers Capital, Llc Direct gas capture systems and methods of use thereof
US20200361819A1 (en) * 2019-05-13 2020-11-19 Carmeuse North America Calciner using recirculated gases

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