Petroleum coke idema kana rima grey hard solid petroleum chigadzirwa chine simbi inopenya uye ine porous.

Petroleum coke components mahydrocarbons, ane 90-97% carbon, 1.5-8% hydrogen, nitrogen, chlorine, sulfur uye heavy metal compounds.Petroleum coke ndeye-chigadzirwa che pyrolysis yemafuta feedstock mune yakanonoka coking zvikamu pakupisa kwakanyanya kugadzira zvigadzirwa zvemafuta akareruka.Kubuda kwepetroleum coke kunenge 25-30% yemafuta mbishi.Iyo yakaderera calorific kukosha inenge 1.5-2 nguva yemarasha, madota emukati haapfuuri 0.5%, iyo inoputika nyaya inenge 11%, uye hutano huri pedyo neanthracite.Zvinoenderana nechimiro uye chitarisiko chepetroleum coke, petroleum coke zvigadzirwa zvinogona kukamurwa kuita 4 mhando: tsono coke, sponge coke, projectile coke uye poda coke:

(1) Tsono coke, ine zviri pachena tsono-yakafanana dhizaini uye faibha magadzirirwo, inonyanya kushandiswa seyepamusoro-simba uye Ultra-yakakwirira-simba graphite electrodes mukugadzira simbi.Sezvo tsono coke ine yakasimba mhando indekisi zvinodiwa maererano nesarufa yemukati, madota, zvinhu zvisingaite uye density yechokwadi, pane zvakakosha zvinodiwa zvekugadzira tsono coke tekinoroji uye mbishi.

(2) Sponge coke, ine yakakwira makemikari reactivity uye yakaderera kusvibiswa zvirimo, inonyanya kushandiswa mualuminium kunyungudutsa indasitiri uye kabhoni indasitiri.

(3) Projectile coke kana spherical coke: Yakaita denderedzwa muchimiro uye 0.6-30mm mudhayamita.Iyo inowanzo gadzirwa kubva kune yakakwirira-sarufa uye yakakwira-asphaltene yakasara oiri uye inogona kushandiswa chete semafuta emuindasitiri akadai sekugadzira magetsi uye simende.

(4) Powder coke: Inobudiswa ne-fluidized coking process, ine zvimedu zvakanaka (0.1-0.4mm muhupamhi), yakakwirira inoputika uye yakakwirira yekuwedzera kwemafuta ekuwedzera, saka haigoni kushandiswa zvakananga mukugadzirwa kwe electrode uye carbon industry.

Zvinoenderana neyakasiyana sarufa yemukati, inogona kukamurwa kuita yakakwirira-sarufa coke (sarufa yemukati pamusoro pe3%) uye yakaderera-sarufa coke (sarufa yemukati pazasi 3%).Low-sarufa coke inogona kushandiswa seanode paste uye prebaked anode yezvirimwa zvealuminium uye se graphite electrodes yemiti yesimbi.Pakati pavo, high-quality low-sulfur coke (sarufa yezvinyorwa zvisingasviki 0.5%) inogona kushandiswa kugadzira graphite electrodes uye carbon enhancers.Low-sarufa coke yemhando yepamusoro (isingasviki 1.5% sarufa) inowanzoshandiswa kugadzira anode akabikwa kare.Yakaderera-mhando petroleum coke inonyanya kushandiswa kunyungudutsa maindasitiri silicon uye kugadzira anode paste.High-sarufa coke inowanzo shandiswa sehuni muzvidyarwa zvesimende uye zvidyarwa zvemagetsi.

Calcined Petroleum Coke:

Panyaya ye graphite electrodes yekugadzirwa kwesimbi kana anode pastes (kunyunguduka electrodes) yealuminium uye magnesium kugadzirwa, kuitira kugadzirisa petroleum coke (green coke) kune zvinodiwa, coke yakasvibirira inofanira kuverengwa.Iyo tembiricha yekuverengera inowanzo kutenderedza 1300 ° C, chinangwa ndechekubvisa zvinhu zvinoputika zvepetroleum coke zvakanyanya sezvinobvira.Nenzira iyi, iyo hydrogen yemukati yakadzokororwa petroleum coke inogona kuderedzwa, uye graphitization dhigirii yepetroleum coke inogona kuvandudzwa, nekudaro ichivandudza yakanyanya tembiricha simba uye kupisa kupisa kwegraphite electrode, nekuvandudza magetsi emagetsi egraphite. electrode.Calcined coke inonyanya kushandiswa mukugadzira graphite electrode, kabhoni paste zvigadzirwa, diamond jecha, chikafu-giredhi phosphorus indasitiri, metallurgical industry uye calcium carbide, pakati peiyo graphite electrodes ndiyo inonyanya kushandiswa.Iyo coke yakasvibirira inogona kushandiswa zvakananga kune calcium carbide sechinhu chikuru checalcium carbide isina calcination, uye kugadzira silicon carbide uye boron carbide sezvinhu zvinoputika.Inogona zvakare kushandiswa zvakananga se coke yekuputira choto muindasitiri yesimbi kana kabhoni zvidhinha zvekuputika kwevira madziro emadziro, uye inogona zvakare kushandiswa seyakaomesesa coke yekukanda maitiro.