I-needle coke iyi-silver-grey porous solid ene-fiber texture direction, futhi inezici zokucwebezela okuphezulu, amandla aphezulu, i-graphitization ephezulu, ukwanda okushisayo okushisayo, ukuphuma kancane, njll. Isetshenziswa ngokukhethekile ekuvikelweni kwezwe kanye nezimboni zabantu. impahla eluhlaza yekhwalithi ephezulu yokwenza ama-electrode e-graphite, izinto ze-anode zebhethri kanye nemikhiqizo ye-carbon ephezulu.

Ngokwezinto zokusetshenziswa ezihlukene zokukhiqiza ezisetshenziswayo, i-coke yenaliti ingahlukaniswa ngezinhlobo ezimbili: esekelwe kuwoyela kanye nesekelwe kumalahle: i-coke yenaliti ekhiqizwa emikhiqizweni yokuhluza i-petroleum ibizwa nge-oil-based needle coke, kanye ne-coal tar pitch kanye nezingxenye zayo Inaliti coke. ekhiqizwa ngamafutha ibizwa ngokuthi i-coal-based needle coke.Ukukhiqizwa kwe-coke yenaliti ngemikhiqizo ye-petroleum kunezinzuzo ezivelele zokuvikela imvelo, futhi ukuqaliswa kunzima kakhulu futhi izindleko zokukhiqiza ziphansi, ngakho-ke kuye kwanakwa kakhulu ngabantu.

I-coke yenaliti esekelwe ku-oyela ingahlukaniswa ngezinhlobo ezimbili: i-coke eluhlaza kanye ne-coke ephekiwe (i-coke e-calcined).Phakathi kwazo, i-coke eluhlaza isetshenziselwa ukukhiqiza izinto ezihlukahlukene zebhethri ezingenayo i-electrode, futhi i-coke ephekiwe isetshenziselwa ukukhiqiza ama-electrode e-graphite aphezulu.Eminyakeni yamuva, ngesimo sokuvikelwa kwemvelo esikhulayo, ukuthuthukiswa okusheshayo kwezimoto ezintsha zamandla kuye kwaholela ekudingeni okuphezulu kwezinto ze-anode zebhethri;ngesikhathi esifanayo, abaguquli abaphelelwe yisikhathi bezinkampani zensimbi bathathelwe indawo ngezithando zikagesi.Ngaphansi kwemiphumela emibili, isidingo semakethe se-coke yenaliti sikhuphuke kakhulu.Njengamanje, ukukhiqizwa kwe-coke yenaliti esekelwe kuwoyela emhlabeni kuphethwe izinkampani zaseMelika, futhi izinkampani ezimbalwa kuphela ezifana ne-Jinzhou Petrochemical, i-Jingyang Petrochemical kanye ne-Yida New Materials ziye zazuza ukukhiqizwa okuzinzile ezweni lami.Imikhiqizo ye-coke yenaliti ephezulu kakhulu incike ekuthengeni kwamanye amazwe.Akukhona nje ukuthi kumoshwa imali eningi, kodwa futhi itholakala kalula.Kubaluleke kakhulu ukusheshisa ucwaningo ngenqubo yokukhiqizwa kwenaliti ye-coke futhi uqaphele ukukhokhwa kokukhiqizwa ngokushesha okukhulu.

I-Raw material iyisici esibalulekile esithinta ikhwalithi yenaliti ye-coke.Izinto ezingavuthiwe ezifanele zinganciphisa kakhulu ubunzima bokwenza i-mesophase pitch futhi zisuse izici ezilandelayo ezingazinzile.Izinto zokusetshenziswa zokukhiqiza i-coke yenaliti kufanele zibe nalezi zimpawu ezilandelayo:

①Okuqukethwe kwama-aromatics kuphezulu, ikakhulukazi okuqukethwe kwe-aromatics yeketango elifushane le-ring engu-3 ne-4 ngokuhlelwa komugqa okungcono kakhulu okungu-40% kuya ku-50%.Ngale ndlela, ngesikhathi se-carbonization, ama-aromatics ama-molecule ahlanganayo ukuze akhe ama-aromatics ama-aromatics amakhulu, futhi ngokusebenzisa ama-aromatics amakhulu.π Amafu e-electron ahlanganisiwe abekwe phezu kwamanye ukuze akhe i-lattice yesakhiwo efana ne-graphite.

②Ama-asphaltene nama-colloid akhona esakhiweni samangqamuzana ama-hydrocarbons amakhulu anephunga elimnandi anokuqukethwe okuphansi.Lezi zinto zine-polarity yamangqamuzana eqinile kanye nokusebenza kabusha okuphezulu., Ngokuvamile kudingwa ukuthi i-heptane engancibiliki ingaphansi kuka-2%.

③Okuqukethwe kwesulfure akukho ngaphezu kwe-0.6%, kanti okuqukethwe kwe-nitrogen akukho ngaphezu kwe-1%.Isibabule ne-nitrogen kulula ukuphunyuka ngenxa yokushisa okuphezulu ngesikhathi sokukhiqizwa kwama-electrode futhi kubangele ukuvuvukala kwegesi, okuzobangela ukuqhekeka kwama-electrode.

④Okuqukethwe komlotha kungaphansi kwe-0.05%, futhi akukho ukungcola kwemishini efana ne-catalyst powder, okuzokwenza ukuthi ukusabela kuqhubeke ngokushesha ngesikhathi se-carbonization, kwandise ubunzima bokwenza ama-mesophase sphere, futhi kuthinte izakhiwo ze-coke.

⑤Okuqukethwe kwezinsimbi ezisindayo ezifana ne-vanadium ne-nickel kungaphansi kuka-100ppm, ngenxa yokuthi izakhi ezakhiwe ngalezi zinsimbi zinomphumela we-catalytic, ozosheshisa ukwakhiwa kwama-mesophase sphere, futhi kunzima ukuthi ama-sphere akhule ngokwanele.Ngesikhathi esifanayo, ukuba khona kwalokhu kungcola kwensimbi emkhiqizweni kuzophinde kubangele ama-voids, Izinkinga ezifana nokuqhekeka kuholela ekunciphiseni kwamandla omkhiqizo.

⑥I-Quinoline insoluble matter (QI) inguziro, i-QI izoxhunywa eduze kwe-mesophase, ivimbele ukukhula nokuhlanganiswa kwamakristalu ayindilinga, futhi isakhiwo senaliti se-coke esinefayibha enhle asikwazi ukutholakala ngemva kokupheka.

⑦Ukuminyana kukhulu kuno-1.0g/cm3 ukuqinisekisa isivuno esanele se-coke.

Eqinisweni, amafutha e-feedstock ahlangabezana nezidingo ezingenhla awavamile.Ngokombono wezingxenye, i-catalytic cracking oil slurry enokuqukethwe okunephunga elimnandi, uwoyela okhishiwe we-furfural, kanye ne-ethylene tar kuyizinto zokusetshenziswa ezifanele zokukhiqiza inaliti ye-coke.I-Catalytic cracking oil slurry ingenye yemikhiqizo yeyunithi ye-catalytic, futhi ngokuvamile ithunyelwa njengamafutha ashibhile.Ngenxa yobuningi bokuqukethwe okunephunga elimnandi kuyo, iyikhwalithi ephezulu yezinto ezingavuthiwe zokukhiqizwa kwenaliti ye-coke mayelana nokubunjwa.Eqinisweni, emhlabeni jikelele Iningi lemikhiqizo ye-coke yenaliti ilungiswa kusuka ku-catalytic cracking oil slurry.