Kuyini i-graphitized petroleum coke?

I-Graphitized Petroleum Coke: Izinto Ezisebenza Kakhulu Zekhabhoni Ezivela Ku-Petroleum Coke

I-graphitized petroleum coke iyinto yekhabhoni ekhiqizwa ngokwelapha i-petroleum coke ngokushisa okuphezulu (ngokuvamile i-2,800°C–3,000°C). Isici sayo esiyinhloko sisekuhlelweni kabusha kwama-athomu ekhabhoni okubangelwa ukushisa okuphezulu ku-petroleum coke abe yisakhiwo sekristalu esinezingqimba esiseduze ne-graphite yemvelo, okuthuthukisa kakhulu izakhiwo zayo zomzimba nezamakhemikhali. Ngezansi ukuhlaziywa okuningiliziwe:

I. Izici Eziyinhloko: Ukuthuthukiswa Kokusebenza Nge-Graphitization

  1. Okuqukethwe Okuphezulu Kwekhabhoni Nokungcola Okuphansi
    • Okuqukethwe kwekhabhoni kudlula u-98%, okuqukethwe kwesulfure kuphansi njengo-<0.05%, kanti umlotha kanye nezinto eziguquguqukayo ziphansi kakhulu kune-petroleum coke evamile. Lokhu kuhlanzeka okuphezulu kwenza kube kuhle kakhulu ekusetshenzisweni kwensimbi, amakhemikhali, kanye neminye imboni.
  2. Ukuqhuba Okuhle Kakhulu Kukagesi Nokushisa
    • I-Graphitization idala isakhiwo esijwayelekile esinezingqimba, kunciphisa ukumelana nokufuduka kwama-electron. Ukumelana kwehla kufinyelele ku-5–7 μΩ·m (vs. 8–12 μΩ·m ye-coke evamile), kusondela ekuqhutshweni kwe-graphite yemvelo.
  3. Ukuzinza Okuphezulu Kokushisa Nokungangeni Kwamakhemikhali
    • Igcina ukuqina kwesakhiwo emazingeni okushisa aphezulu (isb., >1,600°C ezithandweni zikagesi zokwenza insimbi) futhi imelana nokusabela ngama-acid/ama-alkali. Ifanele izinto eziphikisayo kanye nama-reactor ashisa kakhulu.
  4. Izinga Lokumunca Eliphezulu kanye ne-Coefficient Ephansi Yokwanda Kokushisa (i-CTE)
    • Isakhiwo esinezimbobo (30–50% porosity) kanye ne-CTE ephansi (~1.5–2.5×10⁻⁶/°C) zisebenza kahle kakhulu ezisetshenzisweni ezifana nama-carburizer kanye nezinto zokugcoba.

II. Inqubo Yokukhiqiza: Izinyathelo Ezibalulekile Ekusetshenzisweni Kwe-Graphitization Emazingeni Okushisa Aphezulu

  1. Ukwelashwa Kwangaphambi Kwezinto Eziluhlaza
    • Khetha i-coke ye-petroleum ye-premium ene-sulfur ephansi, enomlotha ophansi (isb., i-coke yenaliti noma i-coke yesiponji kusuka ekucoleni okulibazisekile). Cwilisa, hlunga, bese uhlanganisa usayizi wezinhlayiya (isb., 0–1 mm, 1–3 mm).
  2. I-Graphitization Yokushisa Okuphezulu
    • Indlela Yesithando Somlilo Sase-Acheson Yendabuko: Hlanganisa i-petroleum coke nama-graphitizing agents (isb., isihlabathi se-quartz) bese ushisa ku-2,800–3,000°C esithandweni sokumelana amahora angu-20–50. Ukusetshenziswa kwamandla aphezulu (6,000–8,000 kWh/ton) kodwa imishini evuthiwe.
    • Indlela Yesimanje Yokushisa Okuqhubekayo: Sebenzisa izitofu eziqondile noma ezijikelezayo ezivikelwe ngegesi engasasebenzi (N₂/Ar) ukuze ufudumale/upholise ngokushesha (isikhathi somjikelezo: amahora angu-24–48). Ukusetshenziswa kwamandla kwehliswe kwaba ngu-3,500 kWh/ton, ngobumsulwa obuphezulu (umlotha <0.1%).
  3. Ngemva Kokucubungula
    • I-coke epholile, echotshoziwe, bese uyicindezela ngesikrini. Faka izembozo zomphezulu (isb., i-pitch) noma i-chemical vapor deposition (CVD) ukuze uthuthukise ukusebenza ngokwezidingo zamakhasimende.

III. Izicelo: "Izinto Eziguquguqukayo" Zensimbi Namakhemikhali

  1. Imboni Yezinsimbi
    • Ama-Electrode e-Graphite: Izinto eziyinhloko zokwenza insimbi yesithando sikagesi, ezimelana namazinga okushisa aphezulu kanye nemisinga yomoya ukuze kuthuthukiswe ukusebenza kahle.
    • I-Carburizer: Ikhuphula ngokushesha okuqukethwe kwekhabhoni (>90% ukumuncwa) ekubunjweni kwensimbi okumpunga/okungwevu ngenkathi inciphisa isibabule (<0.05%) ukuze ithuthukise ikhwalithi yokubunjwa.
    • Izinto Ezivuselela Ukushisa: Zisetshenziswa ezitini zekhabhoni noma ezixubeni ze-ramming ukuze kufakwe ama-lining esitofu esishisa kakhulu ukuze kwandiswe isikhathi senkonzo.
  2. Imboni Yamakhemikhali
    • Ukukhiqizwa kwe-Silicon Carbide: Isebenza njengomthombo we-carbon osabela ne-SiO₂ ukuze ikhiqize ama-abrasives e-silicon carbide aqinile futhi angagugi.
    • Izinto Zebhethri: I-coke ene-graphitized engusayizi omncane ithuthukisa ukusebenza kwe-lithium-ion battery anode charge/discharge.
  3. Ezinye Izinhlelo Zokusebenza
    • Izinto zokugcoba: Isakhiwo esinezingqimba kanye ne-coefficient ephansi yokungqubuzana kwenza kube lula ukusetshenziswa njengezithambisi eziqinile emishinini.
    • Izithasiselo zepulasitiki/zerabha: Zithuthukisa ukuhanjiswa kwamandla noma izakhiwo ezivimbela ukuguquguquka.

IV. Ukuqhathaniswa ne-Ordinary Petroleum Coke

Isici I-Graphitized Petroleum Coke I-Coke Ejwayelekile Ye-Petroleum
Okuqukethwe kwekhabhoni >98% 85–97%
Okuqukethwe kwe-Sulphur <0.05% 0.5–5%
Ukumelana 5–7 μΩ·m 8–12 μΩ·m
I-CTE 1.5–2.5×10⁻⁶/°C 2.5–3.5×10⁻⁶/°C
Izicelo I-metallurgy yezinga eliphezulu, amakhemikhali, amabhethri Uphethiloli, imikhiqizo ejwayelekile yekhabhoni

V. Inani Lemakethe Nezindlela Zokuthambekela

Iqhutshwa ukukhula kwezimoto zokwenza insimbi yesithando sikagesi kanye nezimoto zamandla amasha, isidingo se-graphitized petroleum coke siyaqhubeka nokukhula. Ubuchwepheshe besimanje besithando esiqhubekayo kunciphisa izindleko zokukhiqiza ngo-40-50% uma kuqhathaniswa nezindlela zendabuko, okuvumela ukwanda kwezicelo eziphakathi nendawo. Intuthuko yesikhathi esizayo, njengokunciphisa i-hydrogen kanye nokushisa nge-microwave, kuthembisa izinqubo zokukhiqiza eziluhlaza nezisebenza kahle kakhulu.

Isikhathi sokuthunyelwe: Agasti-26-2025