Koke ya peteroli ni igikoresho cy’amavuta gikomeye cy’umukara cyangwa imvi yijimye gifite icyuma gishyuha kandi gifite imyenge.

Ibice bya peteroli coke ni hydrocarbons, irimo 90-97% bya karuboni, 1.5-8% bya hydrogen, azote, chlorine, sulfur n'ibinyabutabire bya heavy metal. Peteroli coke ni umusaruro ukomoka kuri pyrolysis y'amavuta yo mu bwoko bwa feedstock mu bice bya coking byatinze ku bushyuhe bwinshi kugira ngo bikore amavuta yoroheje. Umusaruro wa peteroli coke ni hafi 25-30% by'amavuta mabi. Agaciro kayo ka karorifique ni hafi inshuro 1.5-2 z'amakara, ivu ntirirenze 0.5%, ibintu bihinduka ni hafi 11%, kandi ubwiza buri hafi ya anthracite. Dukurikije imiterere n'isura ya peteroli coke, ibikomoka kuri peteroli coke bishobora kugabanywamo ubwoko bune: neled coke, sponge coke, projectile coke na powder coke:

(1) Imashini ya Needle coke, ifite imiterere isa n'urushinge n'imiterere ya fibre, ikoreshwa cyane cyane nk'amashanyarazi ya grafiti afite imbaraga nyinshi kandi afite imbaraga nyinshi mu gukora ibyuma. Kubera ko imashini ya needle coke ifite ibisabwa bikomeye mu gupima ubuziranenge mu bijyanye n'ingano ya sulfur, ivu, ibintu bihindagurika n'ubucucike nyakuri, hari ibisabwa byihariye mu ikoranabuhanga ryo gukora imashini ya needle coke n'ibikoresho fatizo.

(2) Koke ya siponji, ifite ubushobozi bwinshi bwo gukora imiti n'umwanda muke, ikoreshwa cyane cyane mu nganda zitunganya aluminium n'inganda zitunganya karuboni.

(3) Koke ikoze mu buryo bwa projectile cyangwa koke y’umubumbe: Ifite ishusho y’umubumbe kandi ifite umurambararo wa mm 0.6-30. Muri rusange ikorwa mu mavuta menshi ya sulfure n’afite asphaltene nyinshi kandi ishobora gukoreshwa gusa nk’ibicanwa by’inganda nko kubyaza amashanyarazi na sima.

(4) Powder coke: Ikorwa hakoreshejwe uburyo bwo guteka bukozwe mu buryo bw'amazi, ifite uduce duto (0.1-0.4mm mu murambararo), ingano nyinshi z'ubushyuhe n'ubushyuhe bwinshi, bityo ntishobora gukoreshwa mu buryo butaziguye mu gutegura electrode no mu nganda za karuboni.

Dukurikije ingano zitandukanye za sulfure, ishobora kugabanywamo coke ifite sulfure nyinshi (ingano ya sulfure iri hejuru ya 3%) na coke ifite sulfure nkeya (ingano ya sulfure iri munsi ya 3%). Coke ifite sulfure nkeya ishobora gukoreshwa nk'umuti wa anode na anode zatetse mbere ku nganda za aluminiyumu ndetse na electrode za grafiti ku nganda z'ibyuma. Muri zo, coke ifite sulfure nkeya (ingano ya sulfure iri munsi ya 0.5%) ishobora gukoreshwa mu gukora electrode za grafiti na carbon enhancers. Coke ifite sulfure nkeya ifite ubuziranenge rusange (munsi ya 1.5% ya sulfure) ikunze gukoreshwa mu gukora anode zatetse mbere. Coke ifite lisansi nkeya ikoreshwa cyane cyane mu gushongesha silicon mu nganda no gukora paste ya anode. Coke ifite sulfure nkeya muri rusange ikoreshwa nk'amavuta mu nganda za sima no mu nganda z'amashanyarazi.

Koke ya peteroli ya Calcined:

Ku bijyanye na electrode za grafiti zo gukora ibyuma cyangwa anode pastes (electrodes zishongesha) zo gukora aluminiyumu na manyeziyumu, kugira ngo peteroli coke (coke y'icyatsi kibisi) ihuzwe n'ibisabwa, coke y'icyatsi kibisi igomba gushyirwamo calcium. Ubushyuhe bwa calcium muri rusange buri hafi 1300 ° C, intego ni ugukuraho ibice bya peteroli coke bihindagurika uko bishoboka kose. Muri ubu buryo, ingano ya hydrogen ya peteroli coke ishobora kugabanuka, kandi ingano ya graphitization ya peteroli coke ishobora kunozwa, bityo bikanoza imbaraga z'ubushyuhe bwinshi n'ubushyuhe bwa electrode ya grafiti, no kunoza imikorere y'amashanyarazi ya electrode ya grafiti. Calcined coke ikoreshwa cyane cyane mu gukora electrode za grafiti, ibicuruzwa bya carbon paste, umucanga wa diyama, inganda za fosifore zo mu rwego rw'ibiribwa, inganda za metallurgike na calcium carbide, muri zo electrode za grafiti ni zo zikoreshwa cyane. Coke y'icyatsi kibisi ishobora gukoreshwa mu buryo butaziguye kuri calcium carbide nk'ikintu cy'ingenzi cya calcium carbide idakoreshejwe calcium, no gukora silicon carbide na boron carbide nk'ibikoresho byo kwangiza. Ishobora kandi gukoreshwa nk'ibumba rya coke mu itanura riturika mu nganda zikora ibyuma cyangwa amatafari ya karuboni mu gutwikira inkuta z'itanura riturika, ndetse ishobora no gukoreshwa nk'ibumba rinini mu gucukura.