Petroleum Coke yog dab tsi?
Raws li tau hais los saum no, roj av coke yog los ntawm - cov khoom ntawm cov txheej txheem roj refining. Nws yog carbon- cov khoom nplua nuj thiab qee qhov hnyav, sulfur, thiab hydrogen.
Nws structurally belongs rau tsev neeg Coke. Petroleum coke feem ntau yog siv rau hauv ntau yam kev tsim khoom xws li smelting, carbon dub ntau lawm, thiab lwm yam kev lag luam uas yuav tsum tau ua kom kub siab -.
Petroleum coke kuj tuaj yeem tau txais los ntawm qee qhov chaw tsis zoo. Ib qho ntawm cov peev txheej no yog kev tsim thiab ua cov Bitumen (Asphalt) muab rho tawm los ntawm cov roj xuab zeb hauv cov refineries. Txawm li cas los xij, raws li ib tus neeg nyiam hauv daim teb no, koj tuaj yeem kawm paub ntau ntxiv txog qhov sib txawv ntawm cov roj derivatives los ntawm kev tso npe hauv Cov Kev Kawm Roj thiab Roj hauv Dubai.
Kev tsim cov roj av coke pib thaum xyoo 1800s thiab thaum ntxov 1900s. Tom qab ntawd, thaj chaw ntawm nws txoj kev siv tau pib tshwm thoob ntiaj teb. Nws yog siv feem ntau raws li ib qho kev lag luam roj qhov chaw rau boilers thiab furnaces. Nws siv tau nthuav dav kom suav nrog ntau yam ntawm lwm cov ntawv thov, xws li kev lag luam mus rau cov neeg siv khoom- cov ntawv thov kev taw qhia.
Niaj hnub no, nws yog ib tug roj qhov chaw rau fais fab nroj tsuag thiab boilers vim nws cov ntsiab lus siab zog.
Nws tseem tuaj yeem siv rau hauv kev tsim cov cement ua ib qho ntxiv lossis cov ntawv khi. Tsis tas li ntawd, Petroleum coke yog siv los tsim graphite, uas yog siv rau hauv ntau yam khoom, nrog rau xaum thiab roj teeb.
Petroleum Coke yog tsim thiab ua li cas?
Petroleum Coke yog tsim los ntawm cov txheej txheem roj av refining. Thawj theem yog rho tawm cov khoom siv raw (cov roj crude) hauv av tom qab drilling ib lub qhov dej. Qhov thib ob theem yog thauj cov ntaub ntawv no mus rau cov roj refinery.
Cov roj refineries ua kom cov roj ntsha nyoos no rau hauv cov khoom siv tau rau kev ua lag luam -piv txwv li, roj av, roj av, diesel, kerosene, thiab lwm yam khoom siv.
Refining petroleum hydrocarbons suav nrog cov khoom siv, theem, cov txheej txheem, thiab tshuaj lom neeg cov tshuaj tiv thaiv kom tau txais cov khoom kawg.
Nyob rau theem no, cov ntaub ntawv raw yog rhuab mus rau qhov kub siab heev nyob rau hauv distillation yees thiab nias rau high pressures. Tom qab ntawd, txhua qhov sib xyaw hydrocarbon sib cais ntawm qee qhov siab thiab kub.
Cov seem ntawm cov derivatives no tseem nyob hauv daim ntawv ntawm cov kua roj av. Ntawm no, cov kua dej no raug xa mus rau cov chav tshwj xeeb hu ua "coking units" kom tiav cov txheej txheem lim. Tom qab ntawd, cov kua dej no tau ua tiav ntawm qhov ntsuas kub thiab siab los tsim Petroleum coke nyob rau hauv daim ntawv ntawm cov khib nyiab tom qab purging lawv ntawm tag nrho cov gases thiab volatile cov ntaub ntawv. Thaum kawg, tag nrho cov roj teeb uas tseem tshuav thiab hnyav raug cais tawm.
Qhov tshwm sim roj av coke nyob rau theem no yog hu ua Green Petroleum Coke (CVP). Hauv luv luv, tseem yuav tsum tau ua tiav. Petroleum Coke tuaj yeem siv tau ntawm no hauv qee daim ntawv thov, tab sis lwm tus yuav tsum tau ua ntau dua thiab hu ua "Calcined Coke". Cov txheej txheem no txhais tau tias hloov cov roj av coke mus rau lub tshuab hluav taws xob kom tshem tawm cov seem uas tsis muaj hluav taws xob hydrocarbon residues.
Cov calcined roj av coke tuaj yeem ua tiav hauv qhov cub anode ci. Nws tsim coke, uas yog siv feem ntau hauv kev tsim steel lossis aluminium.
Rau kev khaws cia thiab kev thauj mus los, xws li thee, roj av coke yog khaws cia rau hauv pawg loj hauv hnab lossis silos. Conveyors, hopper siv, thiab trolleys tau yooj yim thauj nws.
Vim roj av coke yog carbon- nplua nuj, nws yuav tsum tau muab cia rau hauv qhov chaw qhuav.
Nws yuav tsim cov khoom tawv hu ua "damp coke" yog tias ntub. Nws yog ib yam khoom uas nyuaj rau tshem tawm. Nws feem ntau tuaj yeem tawg yooj yim lossis tshem tawm los ntawm kev siv lub ripper, uas yog lub siab - lub siab dej hose.
Dab tsi yog qhov tseem ceeb tshaj plaws tshuaj thiab lub cev Specifications ntawm Petroleum Coke?
Lub cev thiab tshuaj tshwj xeeb ntawm roj av coke sib txawv nyob ntawm seb cov txheej txheem tsim khoom thiab cov khoom kawg. Qee qhov tshwj xeeb tshaj plaws rau cov tsiaj coke muaj xws li:
Chemistry: Feem ntau cov petcoke muaj cov pa roj carbon 85 ~ 99%, thiab hydrogen nyob rau hauv concentrations ntawm 3.0- 4.0%. Raw (los yog ntsuab) coke muaj 0.5-1% nitrogen thiab 0.2- 6.0% sulfur, uas dhau los ua emissions thaum coke yog Calcined.
Cov nqi cua sov: Petroleum coke yog combustible heev thiab muaj cua sov nqi, feem ntau ntawm 8,000 thiab 10,000 BTU / lb.
Loj: Qhov loj me me ntawm petcoke feem ntau nyob rau hauv thaj tsam ntawm 0-50 mm.
Tshauv: Nyob ntawm lub hauv paus chiv keeb ntawm Petroleum coke, nws yuav muaj li ntawm 0.5 ~ 1%.
Moisture: Cov dej noo nyob rau hauv Petroleum coke hais txawv nrog rau qhov chaw mining; nws tuaj yeem nyob ntawm qis dua 1% mus rau ntau dua 10%.
Volatile Matter Content Content: Cov ntsiab lus ntawm cov teeb meem tsis hloov pauv hauv Coke nws txawv nyob ntawm qhov chaw mining, uas feem ntau pom muaj tsawg dua 10%.
Hardness: Muaj ob hom sib txawv ntawm petcoke: calcined thiab uncalcined. Calcined petcoke yog complex thiab denser tshaj li niaj zaus petcoke vim nws muaj zog carbon concentration.
Cov ntsiab lus sulfur: Petcoke sulfur cov ntsiab lus tuaj yeem sib txawv ntawm 0.2% mus rau 6%, nyob ntawm seb hom petcoke thiab cov txheej txheem ua kom zoo siv.
Cov ntsiab lus hlau: Cov ntsiab lus hlau tag nrho yog feem ntau tsawg dua 0.5%. Cov hlau hauv Petcoke yog aluminium, cobalt, hlau, chromium, calcium, thiab lwm yam.
Fixed Carbon: Petcoke cov ntsiab lus ntawm cov pa roj carbon monoxide feem ntau yog ntau dua 85% thiab tuaj yeem siab txog 99%.
Qhov ntom ntom ntom ntom feem ntau yog li ntawm 0.8 txog 1.0 g / cm3.
Dab tsi yog Hom Petroleum Coke?
Muaj ntau ntau hom roj av coke, uas txawv raws li txoj kev ua thiab refining. Ntawm qhov tseem ceeb ntawm cov hom no:
Daim txhuam cev Coke
Nws yog cov roj av coke uas ua los ntawm cov khoom seem seem hnyav los ntawm Pyrolysis hauv lub txaj fluidised. Qhov laj thawj yog vim li cas nws thiaj li hu ua daim txhuam cev yog vim nws qhov porosity siab thiab tsis tshua muaj qhov ntom ntom.
Daim txhuam cev coke feem ntau yog siv los tsim cov electrodes rau kev lag luam txhuas. Sponge coke yog qhov zoo tagnrho rau anodes vim nws cov purity siab, tsis muaj leej faj cov ntsiab lus, thiab zoo hluav taws xob conductivity. Nws kuj tseem tiv taus thermal shock thiab tsis tshua muaj coefficient ntawm thermal expansion.
Sponge coke kuj tseem siv los ua roj hauv cov boilers thiab cement kilns. Nws cov ntsiab lus sulfur tsawg ua rau nws tsim cov sulfur dioxide emissions tsawg dua thaum hlawv.
Txhaum Coke
Hom no yog tsim thaum lub sij hawm ncua coking txheej txheem. Cov coke hais yog sai quenching, ua rau irregularities nyob rau hauv lawv cov qauv. Raws li, nws dhau los ua nyuaj thiab tsis tsim nyog rau cov ntawv thov Coke tshwj xeeb. Piv txwv li, anode ntau lawm yuav tsum muaj siab purity tsawg porosity coke.
Nws tseem tuaj yeem siv los ua cov roj hauv ntau cov txheej txheem kev lag luam, suav nrog cov cement kilns thiab fais fab nroj tsuag. Nws cov porosity siab ua rau nws muab cov khoom zoo combustion thiab txo cov emissions.
Koob Coke
Nws yog tsim tshwj xeeb los ntawm cov kua dej catalytic cracking (FCC) decant roj lossis thee tar suab.
Nws cov qauv tshwj xeeb thiab purity siab ua rau nws zoo tagnrho rau kev tsim cov qib siab - zoo graphite electrodes, qhov tseem ceeb rau kev tsim cov roj teeb rau lub tsheb fais fab (EVs) thiab lwm lub zog cia.
Nyob rau hauv xaus,
Txawm hais tias roj av coke yog ib qho chaw muaj txiaj ntsig, nws tseem tuaj yeem ua rau lub neej - hem. Nws yog ib qho tseem ceeb uas yuav tsum tau ceev faj txog kev nyab xeeb uas tsim nyog thaum tuav cov roj av coke, suav nrog hnav khaub ncaws tiv thaiv, zam kev sib cuag ntawm daim tawv nqaij, thiab siv qhov cua kom zoo.
Tsis tas li ntawd, kev saib xyuas cov cuab yeej siv niaj hnub siv hauv kev tsim cov petcoke yuav tsum tau ua kom txo qis kev pheej hmoo ntawm kev raug xwm txheej lossis raug rau cov khoom phom sij.
