Petroleum coke chigadzirwa chepetroleum chakaoma chine ruvara rutema kana grey dema chine simbi inopenya uye chine maburi.

Zvikamu zve petroleum coke mahydrocarbon, ane 90-97% kabhoni, 1.5-8% hydrogen, nitrogen, chlorine, sarufa uye heavy metal compounds. Petroleum coke ibumbiro remafuta anogadzirwa ne pyrolysis ye feedstock oil muma delayed coking units pakupisa kwakanyanya kuti igadzire zvigadzirwa zvemafuta akareruka. Kubuda kwe petroleum coke kunenge 25-30% yemafuta asina kubikwa. Kukosha kwayo kwakaderera kwe calorific kunenge ka1.5-2 kupfuura marasha, ash content haisi kupfuura 0.5%, volatile matter inenge 11%, uye mhando yacho iri pedyo ne anthracite. Zvichienderana nechimiro uye chitarisiko che petroleum coke, zvigadzirwa zve petroleum coke zvinogona kukamurwa kuita mhando ina: needle coke, sponge coke, projectile coke uye powder coke:

(1) Needle coke, ine chimiro chakafanana netsono uye magadzirirwo efiber, inonyanya kushandiswa sema electrodes e graphite ane simba guru uye ane simba guru mukugadzira simbi. Sezvo needle coke iine zvinodiwa zvakasimba zvemhando yepamusoro maererano nehuwandu hwesarufa, huwandu hwedota, zvinhu zvinoshanduka uye density chaiyo, pane zvinodiwa zvakakosha zve tekinoroji yekugadzira needle coke nezvinhu zvakagadziriswa.

(2) Sponge coke, ine reactivity yakawanda yemakemikari uye ine huwandu hushoma hwekusvibiswa, inonyanya kushandiswa muindasitiri yekunyungudutsa aruminiyamu uye indasitiri yekabhoni.

(3) Koke inobuda kana kuti koke yakatenderera: Yakaita sedenderedzwa uye ine dhayamita ye 0.6-30mm. Inowanzo gadzirwa nemafuta ane sarufa yakawanda uye ane asphaltene yakawanda uye inogona kushandiswa chete semafuta emumaindasitiri akadai sekugadzira magetsi nesimende.

(4) Powder coke: Inogadzirwa ne fluidized coking process, ine zvidimbu zvidiki (0.1-0.4mm mu dhayamita), high volatible content uye high thermal expansion coefficient, saka haigone kushandiswa zvakananga mukugadzira ma electrode uye carbon industry.

Zvichienderana nehuwandu hwakasiyana hwesarufa, inogona kukamurwa kuita ma coke ane sarufa yakawanda (sarufa iri pamusoro pe3%) uye coke ine sarufa yakaderera (sarufa iri pasi pe3%). Coke ine sarufa shoma inogona kushandiswa seanode paste uye anode dzakabikwa kare dzezvirimwa zvearuminiyamu uye se graphite electrodes dzezvirimwa zvesimbi. Pakati pawo, coke ine sarufa yakaderera yepamusoro (sarufa iri pasi pe0.5%) inogona kushandiswa kugadzira ma electrode egrafiti uye zvinosimudzira kabhoni. Coke ine sarufa yakaderera yemhando yepamusoro (pasi pe1.5% sarufa) inowanzo shandiswa kugadzira anode dzakabikwa kare. Coke ine petroleum yakaderera inonyanya kushandiswa pakunyungudutsa silicon yeindasitiri nekugadzira anode paste. Coke ine sarufa yakawanda inowanzo shandiswa semafuta muzvivakwa zvesimende nemagetsi.

Calcined Petroleum Coke:

Kana iri graphite electrodes yekugadzira simbi kana anode pastes (electrodes inonyungudutsa) yekugadzira aruminiyamu nemagnesium, kuitira kuti petroleum coke (green coke) ienderane nezvinodiwa, green coke inofanira kuiswa calcium. Kupisa kwe calcination kunowanzoita 1300 ° C, chinangwa ndechekubvisa zvikamu zvinoshanduka zve petroleum coke zvakanyanya sezvinobvira. Nenzira iyi, huwandu hwehydrogen mu petroleum coke inoshandiswazve hunogona kuderedzwa, uye graphitization degree ye petroleum coke inogona kuvandudzwa, nokudaro zvichivandudza simba rekupisa kwepamusoro uye kuramba kupisa kwe graphite electrode, uye kuvandudza conductivity yemagetsi ye graphite electrode. Calcined coke inonyanya kushandiswa mukugadzira graphite electrodes, carbon paste products, diamond jecha, food-grade phosphorus industry, metallurgical industry uye calcium carbide, pakati payo graphite electrodes ndiyo inonyanya kushandiswa. Green coke inogona kushandiswa zvakananga kune calcium carbide sechinhu chikuru che calcium carbide isina calcination, uye kugadzira silicon carbide ne boron carbide sezvinhu zvinogumbura. Inogona zvakare kushandiswa zvakananga se coke ye blast oven muindasitiri yesimbi kana carbon brick ye blast oven wall lining, uye inogona zvakare kushandiswa se dense coke ye cast process.