Petroleum coke ndi chinthu cholimba choyaka choyaka chochokera ku zotsalira za petroleum ndi phula la petroleum pokoka. Mtundu ndi wakuda ndi porous, chinthu chachikulu ndi carbon, ndipo phulusa ndi otsika kwambiri, nthawi zambiri pansi 0.5%. Mafuta a coke ndi mtundu wa kaboni wosavuta wa graphitized, mafuta a petroleum coke ali ndi ntchito zosiyanasiyana m'makampani opanga mankhwala, zitsulo ndi mafakitale ena, ndipo ndiye chinthu chachikulu chopangira kupanga zinthu zopangidwa ndi graphite ndi electrolytic aluminiyamu mpweya.
Malingana ndi kutentha kwa kutentha kwa kutentha, mafuta a petroleum coke amatha kugawidwa m'mitundu iwiri: coke yaiwisi ndi coke calcined. Coke wakale wa petroleum wotengedwa kuchokera kuchedwa kophika amakhala ndi zinthu zambiri zosakhazikika komanso amakhala ndi mphamvu zochepa zamakina. The calcined coke akamagwira calcination. Malo ambiri oyeretsera ku China amatulutsa coke yaiwisi yokha, ndipo ntchito zambiri za calcination zimachitika muzomera za kaboni.
Petroleum coke akhoza kugawidwa mu mkulu sulfure coke (wokhala oposa 1.5% sulfure), sing'anga sulfure coke (wokhala 0.5% -1.5% sulfure), ndi otsika sulfure coke (wokhala zosakwana 0.5% sulfure) mitundu itatu, maelekitirodi graphite ndi ena yokumba kupanga graphite mankhwala otsika sulfure.
Needle coke ndi mtundu wa coke wapamwamba kwambiri wokhala ndi mawonekedwe owoneka bwino a ulusi, makamaka kuchuluka kwamafuta otsika komanso graphitization yosavuta. Chombo cha coke chikasweka, chimatha kugawanika kukhala tinthu tating'onoting'ono molingana ndi kapangidwe kake (chiwerengerocho nthawi zambiri chimakhala pamwamba pa 1.75), ndipo mawonekedwe a anisotropic fibrous amatha kuwonedwa pansi pa maikulosikopu yowala kwambiri, motero amatchedwa coke singano.
The thupi ndi makina anisotropy ya singano coke ndi zoonekeratu, ndipo ali wabwino magetsi ndi matenthedwe madutsidwe kufanana ndi olamulira wautali wa tinthu ting'onoting'ono, ndipo matenthedwe kukulitsa coefficient ndi otsika. Pa akamaumba extrusion, yaitali olamulira ambiri particles anakonza molingana ndi malangizo extrusion. Chifukwa chake, singano coke ndiye chinthu chofunikira kwambiri popanga ma elekitirodi amphamvu kwambiri kapena opitilira mphamvu kwambiri, omwe amakhala ndi mphamvu yotsika, yocheperako yakukula kwamafuta komanso kukana kugwedezeka kwamafuta.
Needle coke imagawidwa kukhala mafuta a singano a coke opangidwa kuchokera ku mafuta otsalira a petroleum ndi coke ya singano ya malasha yopangidwa kuchokera ku phula la malasha oyengedwa.
Phula la malasha ndi chimodzi mwazinthu zazikulu zomwe zimagwiritsidwa ntchito popanga phula lamalasha. Ndi chisakanizo cha zosiyanasiyana ma hydrocarbons, wakuda mkulu mamasukidwe akayendedwe theka-olimba kapena olimba kutentha firiji, popanda malo okhazikika osungunuka, wofewetsa pambuyo kutentha, ndiyeno kusungunuka, ndi osalimba 1.25-1.35g/cm3. Malinga ndi kufewetsa mfundo yake lagawidwa otsika kutentha, zolimbitsa ndi mkulu kutentha phula atatu mitundu. Zokolola za sing'anga kutentha asphalt ndi 54-56% ya malasha phula. Mapangidwe a malasha ndi ovuta kwambiri, omwe amagwirizana ndi katundu wa malasha phula ndi zomwe zili mu heteroatoms, komanso zimakhudzidwa ndi ndondomeko ya coking ndi mikhalidwe yopangira malasha. Pali zolozera zambiri zosonyeza momwe malasha amapangidwira, monga phula lofewetsa, toluene insoluble (TI), quinoline insoluble (QI), mtengo wa coking ndi rheological properties of malasha phula.
Mafuta a malasha amagwiritsidwa ntchito ngati binder ndi inregnating agent mumakampani a kaboni, ndipo katundu wake ali ndi chikoka chachikulu pakupanga ndi mtundu wazinthu za carbon. Binder asphalt nthawi zambiri amagwiritsa ntchito kutentha kwapakati kapena kutentha kwapakati kusinthidwa phula ndi malo ochepetsetsa, kukwera kwamtengo wapatali ndi utomoni wapamwamba wa beta, ndipo wothandizira amayenera kugwiritsa ntchito phula la kutentha kwapakati ndi malo ochepetsetsa, otsika QI ndi rheology yabwino.
Nthawi yotumiza: Feb-07-2025