Kodi graphitized petroleum coke ndi chiyani?

Graphitized Petroleum Coke: Kaboni Yogwira Ntchito Kwambiri Yochokera ku Petroleum Coke

Graphitized petroleum coke ndi zinthu zopangidwa ndi kaboni zomwe zimapangidwa poika petroleum coke pansi pa graphitization yotenthetsera kwambiri (nthawi zambiri 2,800°C–3,000°C). Mbali yake yaikulu ili mu kukonzanso kwa maatomu a kaboni mu petroleum coke komwe kumachitika chifukwa cha kutentha kwambiri kukhala kapangidwe ka kristalo koyandikana ndi graphite yachilengedwe, zomwe zimawonjezera kwambiri mphamvu zake zakuthupi ndi zamakemikolo. Pansipa pali kusanthula kwatsatanetsatane:

I. Makhalidwe Abwino: Kupititsa patsogolo Magwiridwe Antchito kudzera mu Graphitization

1. Kaboni Wochuluka & Zodetsa Zochepa
   • Kuchuluka kwa kaboni kumaposa 98%, kuchuluka kwa sulfure kumafika <0.05%, ndipo phulusa ndi zinthu zosinthasintha zimakhala zochepa kwambiri kuposa coke wamba wa petroleum. Kuyera kwakukulu kumeneku kumapangitsa kuti ikhale yoyenera kugwiritsidwa ntchito popanga zitsulo, mankhwala, ndi mafakitale ena.
2. Kuyendetsa Bwino Kwambiri Magetsi ndi Kutentha
   • Kujambula zithunzi kumapangika kapangidwe kokhazikika, komwe kumachepetsa kukana kwa ma elekitironi kusamuka. Kukana kutsika kufika pa 5–7 μΩ·m (vs. 8–12 μΩ·m ya coke wamba), kuyandikira kusinthasintha kwa graphite yachilengedwe.
3. Kukhazikika Kwambiri kwa Kutentha & Kusagwira Ntchito kwa Mankhwala
   • Imasunga kukhazikika kwa kapangidwe kake pa kutentha kokwera (monga, >1,600°C mu uvuni zamagetsi zopangira zitsulo) ndipo imakana kuyanjana ndi ma acid/alkali. Yoyenera zinthu zotsutsana ndi kutentha kwambiri.
4. Kuchuluka Kwambiri kwa Kuyamwa & Kuchuluka Kochepa kwa Kutentha (CTE)
   • Kapangidwe ka mabowo (30–50% porosity) ndi CTE yotsika (~1.5–2.5×10⁻⁶/°C) zimagwira ntchito bwino kwambiri monga ma carburizer ndi mafuta odzola.

II. Njira Yopangira: Masitepe Ofunika Pakujambula Zithunzi Pakutentha Kwambiri

1. Kukonza Zinthu Zopangira
   • Sankhani coke ya petroleum yotsika sulfure, yopanda phulusa (monga, coke ya singano kapena coke ya siponji kuchokera ku coking yochedwa). Pwanya, sungani, ndikuyika kukula kwa tinthu tating'onoting'ono (monga, 0-1 mm, 1-3 mm).
2. Kujambula Zithunzi Zotentha Kwambiri
   • Njira Yachikhalidwe Yopangira Furnace ya Acheson: Sakanizani petroleum coke ndi zinthu zoyezera (monga mchenga wa quartz) ndikutentha mpaka 2,800–3,000°C mu uvuni woteteza kwa maola 20–50. Kugwiritsa ntchito mphamvu zambiri (6,000–8,000 kWh/ton) koma zida zokhwima.
   • Njira Yamakono Yogwiritsira Ntchito Ng'anjo Yopitirira: Gwiritsani ntchito uvuni wowongoka kapena wozungulira wotetezedwa ndi mpweya wosagwira ntchito (N₂/Ar) kuti mutenthetse/kuziziritsa mwachangu (nthawi yozungulira: maola 24–48). Kugwiritsa ntchito mphamvu kwachepetsedwa kufika pa 3,500 kWh/tani, ndi kuyera kwambiri (phulusa <0.1%).
3. Kukonza Pambuyo
   • Konzani coke yoziziritsa, yophwanya, komanso yophimba ndi graphite. Ikani zophimba pamwamba (monga pitch) kapena chemical vapor deposition (CVD) kuti muwonjezere magwiridwe antchito malinga ndi zomwe kasitomala akufuna.

III. Kugwiritsa Ntchito: "Zinthu Zosiyanasiyana" za Metallurgy & Chemicals

1. Makampani Ogulitsa Zitsulo
   • Ma Electrode a Graphite: Zipangizo zazikulu zopangira chitsulo cha ng'anjo yamagetsi, zomwe zimapirira kutentha kwambiri ndi mafunde kuti ziwongolere magwiridwe antchito.
   • Carburizer: Imawonjezera mwachangu kuchuluka kwa kaboni (>90% kuyamwa) mu ductile/imvi yopangira chitsulo pamene imachepetsa sulfure (<0.05%) kuti iwonjezere ubwino wa kupangira.
   • Zipangizo Zopopera: Zimagwiritsidwa ntchito mu njerwa za kaboni kapena zosakaniza zopopera kuti zigwiritsidwe ntchito kutentha kwambiri.
2. Makampani Amankhwala
   • Kupanga Silicon Carbide: Imagwira ntchito ngati gwero la kaboni lomwe limakhudzana ndi SiO₂ kuti ipange zomangira zolimba kwambiri komanso zosatha kusweka za silicon carbide.
   • Zipangizo za Batri: Coke yokhala ndi graphite yocheperako imapangitsa kuti batire ya lithiamu-ion igwire bwino ntchito.
3. Mapulogalamu Ena
   • Mafuta Opaka: Kapangidwe ka zigawo ndi kuchuluka kochepa kwa kupsinjika kumathandiza kuti zigwiritsidwe ntchito ngati mafuta olimba mumakina.
   • Zowonjezera za Pulasitiki/Rabala: Zimawonjezera mphamvu ya conductivity kapena antistatic.

IV. Kuyerekeza ndi Ordinary Petroleum Coke

V. Mtengo ndi Zochitika Zamsika

Chifukwa cha kukula kwa magalimoto opangira zitsulo zamagetsi ndi magalimoto atsopano amphamvu, kufunikira kwa coke ya petroleum yokhala ndi grafiti kukupitirira kukwera. Ukadaulo wamakono wa ng'anjo yopitilira umachepetsa ndalama zopangira ndi 40-50% poyerekeza ndi njira zachikhalidwe, zomwe zimathandiza kuti pakhale kufalikira kwa ntchito zapakati. Kupita patsogolo kwamtsogolo, monga kuchepetsa haidrojeni ndi kutentha kwa microwave, kukulonjeza njira zopangira zobiriwira komanso zogwira mtima kwambiri.