Triboelectrostatic Beneficiation of Landfilled Fly Ash WOCA 2015

Triboelectrostatic Beneficiation ah

Land Buuxinaya Fly Ash

L. Baker, A. Gupta, iyo S. Gasiorowski

ST Qalabka & Technologies LLC, 101 Hampton Avenue, Needham MA 02494 USA

SHIRWEYNAHA: 2015 World of Dhuxul Ash - (www.worldofcoalash.org)

keywords: Triboelectrostatic, Beneficiation, Daqsi Ash, Landfilled, qalajiyey, Kala, carbon

aan la taaban karin

separation Triboelectrostatic ayaa loo isticmaalaa beneficiation ganacsi of ash dhoobnayd sari dhuxusha in ay soo saaraan wax soo saarka carbon yar yahay isticmaalka bedelka cement ee la taaban karo ah ee ku dhow labaatan sanadood. Iyadoo 18 separators in 12 Quwadda dhuxul-rideen dunida oo dhan, ST Qalabka & Technology LLC ee (STET) xiranayo SEPARATOR electrostatic ayaa la isticmaalay si loo soo saaro ka badan 15 Milyan oo tan oo badeeco carbon hooseeyo.

Si aad u taariikhda, beneficiation ganacsi of ash dhoobnayd ayaa lagu sameeyaa si gaar ah on qalalan "orod of ash station‿. sharciyada deegaanka Recent uu abuuray, suuqyada qaarkood, baahan yahay in la siiyo ash beneficiated in times of jiilka ash hooseeyo. Tani, weheliyaan shuruud in goobaha qaar ka mid ah si aad u faaruqiso goobaha qashin qubka ash taariikhiga ah, ayaa abuuray baahida loo qabo in la horumariyo hannaanka ah in beneficiate ash taariikh landfilled.

Baadhitaanno hore ayaa muujiyay, in gaadhista ee ash dhoobnayd qoyaan, iyo qallajinta xiga saamaysaa hab triboelectrostatic ku amraya ah, la carbon iyo macdanta Qurub ku amraya in polarity ka soo horjeeda in la kulantay oo ay ku of ash station. Studies ayaa la sameeyey by qorayaasha si loo ogaado saamaynta gaadhista qoyaan ku oolnimada kala dhowr dambas in la dib ka meelha oo la engejiyey. furida Charge waxaa soo maray qalajiyo soo socda, laakiin guud ahaan oolnimada isa-soociddiisii ​​way gaari u dhiganta in la kulantay oo ay ku cusub ee ash station.

Saamaynta of ash qalajiyey quudiyaan huurka qaraabo ah oo ku saabsan oolnimada-soociddiisa triboelectrostatic ahaa baaro, iyo dareen aad u dhimay marka loo eego in ay la kulantay oo ay ku of ash station, hoos kharashka nidaamka guud.

HORDHAC

American Dhuxul Ash Ururka (ACAA) sahan sanadlaha ah ee wax soo saarka iyo isticmaalka ash dhoobnayd dhuxusha ayaa sheegaya in inta u dhaxaysa 1966 iyo 2011, ka badan 2.3 bilyan oo tan gaaban ash dhoobnayd ayaa la soo saaray by kululeeyaha utility dhuxul-rideen.1 Of oo xaddi qiyaas ahaan 625 million tons ayaa beneficially isticmaalo, inta badan for cement iyo wax soo saarka la taaban karo. Si kastaba ha ahaatee, haray 1.7+ bilyan oo tan waxaa ugu horayn laga helaa meelha ama ka buuxsamay ponded

impoundments. Inkasta oo heerka isticmaalka for ash dhoobnayd immika ahbaa ayaa aad u kordhay sannadihii la soo dhaafay, iyadoo heerarka hadda ku dhow 45%, ku dhowaad 40 million tons of ash dhoobnayd sii wadi in lagu qubo ee sannad kasta. Inkasta oo heerka isticmaalka ee Europe ayaa u badan ka badan ee Maraykanka, Muga badan ee ash dhoobnayd ayaa sidoo kale lagu kaydiyaa meelha iyo impoundments in qaar ka mid ah dalalka Yurub.

Recently, xiisaha kabsaday wax this tuuray ayaa kor u kacay, qayb ahaan sabab u tahay baahida loo qabo ash dhoobnayd oo tayo sare leh wax soo saarka la taaban karo oo cement inta lagu jiro xilliga a of-soo-saarka hoos u sida jiilka tamarta dhuxusha-riday ayaa hoos u dhacay ee Europe iyo North America. Su'aalaha ku saabsan saamaynta mudada dheer deegaanka meelha sida ayaa sidoo kale keentay in korontada si aad u hesho codsiyada isticmaalka faa'iido ash this kaydiyaa.

DHULKA BUUXISO TAYO ash iyo LOO BAAHAN YAHAY BENEFICIATION

Iyadoo qaar ka mid ah tani ash dhoobnayd kaydin laga yaabaa in ku haboon isticmaalka faa'iido sidii hore ka qotay, tirada ugu badan u baahan doonaan processing qaar ka mid ah in ay la kulmaan heerarka tayo leh cement ama wax soo saarka la taaban karo. Tan iyo wax ka caadi ayaa ilmadeeda si ay awood u maaraysay iyo compaction halka laga fogaado jiilka ciidda hawada, qalajiyo noqon doona shuruud yar si loogu isticmaalo la taaban karo tan iyo soo saarayaasha la taaban karo u baahan doontaa in la sii wado dhaqanka ee ash dhoobnayd batching sida budada qalalan. Si kastaba ha ahaatee, halbawle Halabuurka kiimikada ee ash ku kulmay caddaymaha, gaar ahaan content carbon qiyaasay sidii khasaare-on-ka suuroggalaan (SHARCIGA), waa caqabad weyn. Sida isticmaalka ash dhoobnayd ayaa kor u kacay in ugu dambeeyey 20+ sano, ugu "in-spec‿ ash ayaa beneficially isticmaalo, iyo ash tayada off-ka takhalusin. Sayidka, hoos LOI noqon doontaa shuruud u tahay isticmaalka tirada ugu badan ee ash dhoobnayd recoverable ka impoundments utility.

YAREYNTA LOI BY KALA TRIBOELECTRIC

Inkastoo shaqaalaha kala duwan ayaa loo isticmaalaa farsamooyin sari iyo geedi socodka sabeynta ee dhimista LOI ee soo kabsaday landfilled iyo ponded ash dhoobnayd, ST Qalabka & Technologies (STET) ayaa lagu ogaaday in ay nidaamka processing caadiga ah, dheer loo isticmaalo beneficiation of ash dhoobnayd immika ahbaa, waa inay si siman wax ku ool ah oo ku saabsan ash soo kabsaday ka dib markii lagu qalajiyo habboon iyo deagglomeration at kharashka hawlgalka guud hoose.

Inta lagu jiro sagxada-up in codsiga ganacsi ee nidaamka processing STET ee ash dhoobnayd, cilmi STET tijaabiyey kala of ash landfilled qalajiyey. ash Tani kabsaday soocay ash aad u la mid ah in ay immika ahbaa la mid farqi la yaab leh: xukun walxaha la beddeli ka mid ah ash cusub la carbon ku amraya xun ee la xiriirta macdanta.2 cilmi kale nijaasta electrostatic of dhoobnayd carbon ash ayaa sidoo kale lagu arkay ifafaale this.3,4,5

TECHNOLOGY ARARTA - duuli Ash KALA Carbon

In SEPARATOR carbon STET ah (Jaantuska 1), wax la quudiyey galay farqiga khafiif ah inta u dhaxaysa labada electrodes planar isku midka ah. qayb ka yihiin triboelectrically eedeeyay by xiriir interparticle. The carbon wanaagsan eedeeyay iyo macdanta xun eedeeyay (in ash immika ahbaa in aan la ilmadeeda oo la engejiyey) waxaa soo jiitay in electrodes soo horjeeda. qayb ka yihiin ka dibna isagoo xaaqan oo ay suunka dhaqaaqaan joogto ah iyo gaadhsiiyey jiho ka soo horjeeda. Suunka guuro qayb ka ku xiga si ay koronto kasta xagga ugu shishaysa soo horjeeda ee SEPARATOR ah. The xawaaraha suunka sare ayaa sidoo kale u saamaxaaya throughputs mid aad u sarreeya, ilaa 36 tan saacadiiba hal SEPARATOR a. Farqiga u yar, beerta danab sare, hortago qulqulka hadda, ficil caro walxaha-walxaha iyo is-nadiifinta xorta ah ee suunka on electrodes waa sifooyinka muhiimka ah ee SEPARATOR STET ah. By gacanta beegyada uu nidaamka kala duwan, sida xawaaraha suunka, dhibic feed, iyo heerka feed, habka STET saarta ash dhoobnayd LOI hooseeyo ee ka kooban carbon ka yar 1.5 si ay u 4.5% ka dambas Daqsi feed ka bilowda in LOI ka 4% in ka badan 25%.

berdaha. 1 STET SEPARATOR

design SEPARATOR waa mid yara fudud oo is haysta. Mashiinka A loogu talagalay in lagu farsameeyo 36 tan saacaddii waa qiyaastii 9 m (30 ft.) dheer, 1.5 m (5 ft.) ballaaran, iyo 2.75 m (9 ft.) sare. The suunka iyo rollers la xiriira waa qaybo ka mid kaliya uusan u dhaqaaqin. electrodes waa taagan oo ka kooban qalab ah oo ku haboon raagaya. Suunka laga sameeyey oo aan- caag tabinta. isticmaalka awoodda SEPARATOR ee ku saabsan tahay 1 kilowatt-saac tonne ee wax baaraandegi leh ugu xoogga baabbi'iyey laba matoorrada wadista suunka.

Geedi socodka gebi ahaanba qalalan, wuxuu u baahan yahay ma qalab dheeraad ah oo kale oo aan ahayn ash dhoobnayd iyo soo saarta oo aan lahayn biyo qashinka ama qiiqa hawada. The qalabka soo kabsaday ka kooban yihiin ash dhoobnayd hoos ku content carbon in heerka ku haboon in loo isticmaalo sida shaydi a pozzolanic in

la taaban karo, iyo jajab carbon sare waxtar leh sida shidaalka. Isticmaalka labada durdurrada wax soo saarka waxay bixisaa a 100% xal inuu u duulo dhibaatooyinka qubo ash.

Kabsaday QIIMAHA Shidaal OF SARE-Carbon duuli Ash

Waxa intaa dheer in alaabta carbon yar yahay si loogu isticmaalo la taaban karo, brand ProAsh magacaabay®, geeddi-soociddiisa STET sidoo kale soo kabsado haddii kale khasaariyey carbon unburned ee foomka of ash carbon-hodan Daqsi, EcoTherm ku tilmaamay™. EcoTherm™ ayaa qiimaha shidaalka la taaban karo oo si fudud loo soo celin karaa geedka awood koronto la isticmaalayo EcoTherm STET ah™ Ku noqo nidaamka si loo yareeyo isticmaalka dhuxusha ee warshadda. Marka EcoTherm™ waxaa gubay kuleeliyaha korontada, tamarta ka sari waa diinta kar / uumi heerkulka sare ka dibna si korantada hufnaan la mid ah sida dhuxusha, caadi ahaan 35%. beddelidda ee tamarta kabsaday kaamerada korontada ee ST Qalabka & Technology LLC EcoTherm™ nidaamka noqo waa laba ilaa saddex jeer ka badan in of technology ee tartan rasmi ah, halkaas oo tamarta la soo kabsaday sida kulaylka-hoose ee foomka of biyo kulul oo la siidaayey in nidaamka biyaha kuleeliyaha feed. EcoTherm™ waxaa sidoo kale loo isticmaalaa sida il of alumina in meelo cement, barakiciyay bauxite ka qaalisan kaas oo sida caadiga ah gaadiid masaafo dheer. Isticmaalka EcoTherm ah carbon sare™ dambas labada at warshad koronto ama dusiyey meesha cement a, qabano kabashada tamarta ka dhuxusha ka dhiibay, yaraynta baahida loo qabo in kuwayga iyo gaadiid shidaal dheeraad ah si qalabka.

STET ee Raven Power Brandon xeebaha, SMEPA R.D. Morrow, NBP Belledune, RWEnpower Didcot, EDF Energy West Burton, iyo RWEnpower Aberthaw duuli dhirta ash, oo dhan waxaa ka mid ah EcoTherm™ nidaamyada noqo. Qaybaha muhiimka ah ee nidaamka waxaa lagu soo bandhigay in Jaantuska 2.

berdaha. 2 EcoTherm™ nidaamka noqo

STET Ash QALABKA PROCESING

ash dhoobnayd LOI hooseeyo la ilaaliyo oo la soo saaray iyadoo la adeegsanayo farsamada STET ee laba iyo toban saldhig awood oo dhan Maraykanka, Canada, U.K. ah, Poland, iyo Republic of Korea. ProAsh® ash duuli ayaa lagu ansixiyay in loo isticmaalo in ka badan labaatan maamulka jid gobolka, iyo sidoo kale hay'adaha badan faahfaahinta kale. ProAsh® ayaa sidoo kale shahaadada Canadian Standards Association iyo EN 450:2005 heerarka tayada ee Europe. goobaha processing Ash la isticmaalayo technology STET ku qoran yihiin Shaxda 1.

Miis 1. Hawlgallada STET Commercial

Ash dhuxul ka soo kabsaday qabanaysa DHULKA

Laba ilaha ash ayaa laga helay meelha: Muunad ka warshad xoog ku yaalla

Boqortooyada Ingiriiska iyo muunad B: ka Maraykanka. Labada shay-baarka, kuwaas oo ka koobnaa ash ka sari ee dhuxusha bituminous by kululeeyaha utility waaweyn. Sababo la intermingling mid ah waxyaabaha in meelha ugu, ma macluumaad dheeraad ah waxaa laga heli karaa ku saabsan il dhuxusha ama sari xaalado gaar ah.

The baarka sida helay by STET ku jira u dhexeeya 15% iyo 20% biyo waa caadiga ah ee wax landfilled. baarka ayaa sidoo kale ku jira xaddi badan oo kala duwan ee >1/8 inch (~ 3 mm) wax. Si aad u diyaariso tijaabada kala carbon, qashin badan oo laga saaray by baarista iyo baarka ka dibna la qalajiyey iyo deagglomerated ka hor beneficiation carbon. Hababka kala duwan ee lagu qalajiyo / deagglomeration lagu qiimeeyo si ay tayadoodii habka guud. A sheet socodka geedi socodka guud ee la soo bandhigay in Jaantuska 3.

Jaantuska 3: sheet socodka Hab-

The guryaha oo ka mid ah baarka diyaar sidoo ahaayeen gudahood kala duwan ee ash dhoobnayd toos ah laga helay kululeeyaha caadiga ah utility. The guryaha ugu khuseeya labada quudintooda SEPARATOR iyo waxyaabaha lagu soo koobay Jadwalka 2 oo ay la socdaan wax soo saarka ka soo kabsaday.

KALA Carbon

tijaabooyin Carbon hoos u isticmaalaya SEPARATOR suunka triboelectric ku STET keentay in dib u soo kabashada aad u fiican ee wax soo saarka yar yahay LOI. ifafaale The xiiso arkay ahaa dib u noqoshada ee ku amraya of carbon kor ku wada hadlay. Inkastoo dhaqanka sidaas ayaa la arkay horay by STET iyo cilmi kale, hab ay in badala hawlaha shaqo qaraabo iyo sidaas xiriirka dhaqanka ah waxyaabaha la amraya aan la fahamsan yahay. Mid ka mid ah hab jeediyey waa qeybiyey ee udhigo L on macdanta iyo

miiska soo socda koobayaa chemistry ee baarka ka il B. Imtixaanka on ilaha A aan la dhameystirin.

Miis 4: Ash Chemistry of ash LOI hooseeyo.

horumarinta Xoog of a 20% bedelay of ash ka caagan LOI yar hoobiye ah oo ay ku jiraan 600 LB / yd3 tusay wax laga dheefayo ash landfilled sameeyaa xoogaa ka wanaagsan tahay wax-soo-saarka ka cusub. Eeg Shaxda 5 hoos ku.

Miis 5: xoog compressive ee xabadaha madaafiic.

GUNAANAD

Ka dib markii scalping ku haboon ee wax badan oo, qalajiyo, iyo deagglomeration, duuli ash ka meelha warshad korontada soo kabsaday waa la dhimi karaa in content carbon isticmaalaya SEPARATOR STET commercialized suunka triboelectric ah. qaadista heerka nidaamka STET muhiimad u dhiganta, waayo, dambas ku heli immika ka hawlgallada kuleeliyaha oo la engejiyey wax landfilled. wax soo saarka SEPARATOR waa ku haboon si loogu isticmaalo wax soo saarka la taaban karo oo aan beneficiation dheeraad ah la guryaha qaab ku dhowaad isku mid ah. The dib u soo kabashada iyo beneficiation of ash landfilled siin doonaa saad sii of ash tayo sare leh, waayo, soo saarayaasha la taaban karo in kasta oo ay wax soo saarka hoos u "ash fresh‿ sida korontada dhuxul-rideen yareeyo Qarni. Intaa waxaa dheer, Quwadda u baahan in ash ka meelha si ay ula kulmaan beddelo xeerarka deegaanka saar awoodaan inay isticmaalaan habka u beddeli karo deyn wax soo saarka qashinka ah oo wuxuu galay wax qiimo leh sida xawliga ah u soo saarayaasha la taaban karo ay noqon doontaa.

tixraacyada

[1]American Dhuxul Ash Dhuxul waxyaabaha sari iyo Isticmaalka Statistics: https://www.acaa-usa.org/Publications/Production-Use-Reports/

[2]Warbixinta gudaha ST, August 1995.

[3]in,T.X,. Schaefer, JL, Ban, H., Neathery, J.K., iyo Stencel, J.M. Qalalan Beneficiation Processing ee sari Fly Ash, Talaaboda Shirka DOE ku Carbon Unburned on Utility Fly Ash, Laga yaabaa 19 20, Pittsburgh, PA, 1998.

[4]Baltrus, J.P., Diehl, J.R., Soong, Y., Sands, W. separation Triboelectrostatic of ash dhoobnayd iyo dib u noqoshada lacag, shidaal 81, (2002) pp.757-762.

[5]Cangialosi, F., Notarnicola, M., Liberti, L, Stencel, J. Doorka cimilada on Daqsi qaybinta lacag ash inta lagu guda jiro beneficiation triboelectrostatic, Journal of Maaddooyinka Halista ah, 164 (2009) pp.683-688.

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