Kev paub txog roj av coke thiab calcined petroleum coke
1. Petroleum coke
Petroleum coke yog cov khoom siv roj av dub lossis tsaus grey tawv tawv nrog cov xim hlau nplaum thiab yog ntxeem tau.Petroleum coke Cheebtsam yog hydrocarbons, muaj 90-97% carbon, 1.5-8% hydrogen, nitrogen, chlorine, sulfur thiab hnyav hlau compounds.
Petroleum coke yog cov khoom lag luam los ntawm pyrolysis ntawm cov roj feedstock nyob rau hauv qeeb coking units ntawm kub kub los tsim cov khoom roj teeb.Cov zis ntawm roj av coke yog li 25-30% ntawm cov roj nyoos.Nws tus nqi qis calorific yog li ntawm 1.5-2 npaug ntawm cov thee, cov hmoov tshauv tsis ntau tshaj 0.5%, qhov teeb meem tsis hloov pauv yog li 11%, thiab qhov zoo yog ze rau anthracite.
2. Cov qauv zoo ntawm cov roj av coke
Delayed petroleum coke yog hais txog cov coke ntsuab uas tsim los ntawm ncua coking chav tsev, tseem hu ua coke zoo tib yam, thiab tam sim no tsis muaj lub teb chaws tus qauv.Tam sim no, cov tuam txhab tsim khoom hauv tsev feem ntau tsim raws li kev lag luam tus qauv SH0527-92 tsim los ntawm lub qub Sinopec Corporation.Tus qauv feem ntau yog cais raws li cov ntsiab lus ntawm sulfur ntawm roj av coke.Ntawm lawv, thawj qib coke thiab No. 1 coke yog tsim los ua lub zog zoo tib yam graphite electrodes hauv kev lag luam steelmaking, thiab kuj tsim nyog rau txhuas carbon hauv kev lag luam aluminium;No. 2 coke yog siv rau hauv kev lag luam aluminium.Electrode paste siv nyob rau hauv electrolytic hlwb (lub cub tawg) thiab zus tau tej cov graphite electrodes, No. 3 coke yog siv rau zus tau tej cov silicon carbide (abrasive khoom) thiab calcium carbide (calcium carbide), thiab lwm yam carbon cov khoom, kuj siv nyob rau hauv lub tsim ntawm anodes rau txhuas smelting hlwb hauv qab thaiv thiab siv rau blast furnace carbon hauv ob sab phlu los yog lub cub tawg hauv qab siv.
3. Lub ntsiab siv roj av coke
Lub ntsiab siv roj av coke yog pre-ci anodes thiab anode pastes siv nyob rau hauv electrolytic txhuas, carbon kev lag luam ntau lawm carbon enhancers, graphite electrodes, smelting industrial silicon, thiab fuels.
Raws li cov qauv thiab cov tsos ntawm roj av coke, roj av coke cov khoom yuav muab faib ua 4 hom: koob coke, daim txhuam cev coke, projectile coke thiab hmoov coke: (1) koob coke, nrog pom tseeb koob-zoo li tus qauv thiab fiber ntau zoo nkauj, feem ntau yog siv. rau steelmaking High-power graphite electrodes thiab ultra-high-power graphite electrodes nyob rau hauv Txij li thaum koob coke muaj nruj zoo index yuav tsum tau nyob rau hauv cov nqe lus ntawm leej faj cov ntsiab lus, tshauv ntsiab lus, volatile teeb meem thiab muaj tseeb ceev, muaj tshwj xeeb yuav tsum tau rau koob coke ntau lawm technology thiab raw. cov ntaub ntawv.
(2) Daim txhuam cev coke, nrog cov tshuaj lom neeg muaj zog thiab cov ntsiab lus tsis zoo, feem ntau yog siv hauv kev lag luam aluminium smelting thiab carbon kev lag luam.
(3) Projectile coke lossis spherical coke: Nws yog spherical nyob rau hauv cov duab thiab 0.6-30mm inch.Nws feem ntau yog tsim los ntawm high-sulfur thiab high-asphaltene residual roj thiab tsuas yog siv los ua industrial fuels xws li lub zog tsim thiab cement.
(4) hmoov coke: Nws yog tsim los ntawm cov txheej txheem coking fluidized, nrog cov khoom zoo (0.1-0.4mm inch), cov ntsiab lus tsis muaj zog thiab siab thermal expansion coefficient, thiab tsis tuaj yeem siv ncaj qha rau hauv kev npaj electrode thiab carbon kev lag luam.
