Umahluko ophambili kwindlela yokuziphatha kwe-calcination phakathi kwe-coke esekwe kwi-oyile kunye ne-coke esekwe kumalahle ukwiindlela ezahlukeneyo zokusabela eziqhutywa ngumahluko kwiindlela zazo zeekhemikhali zezinto eziluhlaza, ezikhokelela kwiinguqu ezibalulekileyo ekuguqukeni kwesakhiwo sekristale, utshintsho lwepropathi yomzimba, kunye nobunzima bokulawula inkqubo. Uhlalutyo oluneenkcukacha lulandelayo:
1. Umahluko kwiindlela ezisetyenziswa ngayo iikhemikhali ze-Raw Material ubeka isiseko sokuziphatha kwe-Calcination
I-coke esekelwe kwioyile ifumaneka kwi-distillates ezinzima ezifana ne-petroleum residue kunye ne-catalytic cracking clearance oil. Ukwakheka kwayo kweekhemikhali kubonakala kakhulu nge-short side-chain, i-polycyclic aromatic hydrocarbons edibeneyo ngomgca, enomxholo ophantsi we-sulfur, i-nitrogen, i-oxygen, kunye ne-metallic heteroatoms, kunye nokungcola okuncinci okuqinileyo kunye ne-quinoline-insoluble matter. Olu lwakhiwo luphumela kwinkqubo ye-calcination elawulwa yi-pyrolysis reactions, kunye nendlela elula yokusabela kunye nokususwa kokungcola ngokupheleleyo.
Ngokwahlukileyo koko, i-coke esekwe kumalahle iveliswa kwi-coal tar pitch kunye ne-distillates zayo, equlethe inani eliphezulu le-long side-chain kunye ne-condensed polycyclic aromatic hydrocarbons, kunye nezixa ezibalulekileyo ze-sulfur, i-nitrogen, i-oxygen heteroatom, kunye nokungcola okuqinileyo. Ukwakheka okuntsonkothileyo kwe-coke esekwe kumalahle akukhokelela kuphela kwiimpendulo ze-pyrolysis kodwa nakwiimpendulo ezibalulekileyo ze-condensation ngexesha le-calcination, okubangela indlela yokusabela enzima ngakumbi kunye nobunzima obukhulu ekususweni kokungcola.
2. Umahluko kwiSakhiwo seCrystal Evolution Uchaphazela iiPropati zezinto ezibonakalayo
Ngexesha lokubala, ii-microcrystals zekhabhoni kwi-coke esekwe kwioyile ziyanda kancinci kancinci ngobubanzi (La), ukuphakama (Lc), kunye nenani leeleya ngaphakathi kwiikristale (N). Umxholo wee-microcrystals ze-graphite ezifanelekileyo (Ig/Iall) nawo unyuka kakhulu. Nangona i-Lc ifumana "i-inflection point" ngenxa yokuphuma kwezinto eziguquguqukayo kunye nokuncipha kwe-coke eluhlaza, ulwakhiwo lwekristale luphela luba luqhelekile, kunye nenqanaba eliphezulu le-graphitization. Olu tshintsho lwesakhiwo lunika i-coke esekwe kwioyile iipropati ezintle ezifana ne-low thermal expansion coefficient, i-low electrical resistivity, kunye ne-electrical conductivity ephezulu emva kokubala, okwenza ukuba ifaneleke ngakumbi ukuvelisa ii-electrodes ze-graphite ezinkulu ezinamandla aphezulu.
Ngokufanayo, ulwakhiwo lwe-carbon microcrystal ye-coke esekwe kumalahle luyakhula ngokwanda kwe-La, i-Lc, kunye ne-N ngexesha le-calcination. Nangona kunjalo, ngenxa yempembelelo yokungcola kunye neempendulo zokufuma kwizinto eziluhlaza, kukho iziphene ezininzi zekristale, kwaye ukwanda komxholo we-graphite microcrystal ofanelekileyo kunqunyelwe. Ukongeza, i-"inflection point" ye-Lc ibonakala ngakumbi kwi-coke esekwe kumalahle, kwaye iileya ezisandula ukongeza zibonisa "iimpazamo zokubeka" ngokungacwangciswanga kunye neeleya zokuqala, okukhokelela ekutshintsheni okukhulu kwisithuba se-interlayer (d002). Ezi mpawu zesakhiwo zibangela ukuba i-coke esekwe kumalahle ibe ne-coefficient ephantsi yokwandiswa kobushushu kunye ne-electrical resistivity kune-coke esekwe kumalahle emva kwe-calcination, kodwa amandla aphantsi kunye nokumelana nokukrala, okwenza ukuba ifaneleke ngakumbi ukuvelisa ii-electrode ezinamandla aphezulu kunye nee-electrode zamandla aphezulu aphezulu.
3. Umahluko kwiinguqu zePropati ebonakalayo zimisela iindawo ezisetyenziswayo
Ngexesha lokubala, i-coke esekelwe kwioyile idlula kwi-volatile matter escape epheleleyo kunye nokuncipha komthamo ofanayo, okubangela ukwanda okukhulu koxinano lokwenyani (ukuya kuthi ga kwi-2.00–2.12 g/cm³) kunye nophuculo olukhulu kumandla oomatshini. Kwangaxeshanye, ukuhanjiswa kombane, ukumelana ne-oxidation, kunye nokuzinza kweekhemikhali kwezinto ezibalwe kwi-calcined kuphuculwe kakhulu, okuhlangabezana neemfuno zokusebenza ezingqongqo zeemveliso ze-graphite eziphezulu.
Ngokwahlukileyo koko, i-coke esekwe kumalahle ifumana uxinzelelo lwengingqi ngexesha lokuphuma kwezinto eziguquguqukayo ngenxa yobuninzi bokungcola kwayo, okukhokelela ekuncipheni komthamo ongalinganiyo kunye nokwanda okuncinci koxinano lokwenyani. Ngaphezu koko, amandla aphantsi kunye nokumelana nokukrala okuphantsi kwe-coke esekwe kumalahle emva kokuba i-calcination, kunye nokuthambekela kwayo kokwanda ngexesha le-graphitization yobushushu obuphezulu, kufuna ulawulo oluqinileyo lwesantya sokunyuka kobushushu. Ezi mpawu zepropathi zithintela ukusetyenziswa kwe-coke esekwe kumalahle kwiindawo eziphezulu, nangona i-coefficient yayo yokwanda kobushushu obuphantsi kunye nokumelana nombane kusenza singaphindi sithathwe indawo kwiindawo ezithile.
4. Umahluko kuLawulo lweNkqubo Ubunzima buchaphazela ukusebenza kakuhle kweMveliso
Ngenxa yokwakheka kwayo okulula kweekhemikhali, i-coke esekelwe kwioyile ibonisa iindlela ezicacileyo zokusabela ngexesha le-calcination, nto leyo ebangela ubunzima obuphantsi bokulawula inkqubo. Ngokwenza ngcono iiparameter ezifana nobushushu be-calcination, izinga lokufudumeza, kunye nolawulo lomoya, umgangatho kunye nokusebenza kakuhle kwemveliso yeemveliso ezine-calcined kunokuphuculwa ngempumelelo. Ukongeza, umxholo ophezulu we-volatible matter kwi-coke esekelwe kwioyile ubonelela ngamandla obushushu azibonelela ngawo ngexesha le-calcination, nto leyo enciphisa iindleko zemveliso.
Ngokwahlukileyo koko, ukwakheka kweekhemikhali ezintsonkothileyo ze-coke esekwe kumalahle kukhokelela kwiindlela ezahlukeneyo zokusabela ngexesha le-calcination, okwandisa ubunzima bokulawula inkqubo. Unyango oluqinileyo lwezinto eziluhlaza kwangaphambili, ulawulo oluchanekileyo lwesantya sokufudumeza, kunye nokulungiswa okukhethekileyo kwemoyeni kuyafuneka ukuqinisekisa umgangatho ozinzileyo wemveliso emva kwe-calcination. Ngaphezu koko, i-coke esekwe kumalahle ifuna ukongezwa kwamandla obushushu okongezelelweyo ngexesha le-calcination, okunyusa iindleko zemveliso kunye nokusetyenziswa kwamandla.
Ixesha leposi: Epreli-07-2026