Ts'ebetso ea tlhahiso ea thepa ea khabone ke boenjiniere ba sistimi bo laoloang ka thata, tlhahiso ea elektrode ea graphite, thepa e khethehileng ea khabone, khabone ea aluminium, thepa e ncha ea khabone ea maemo a holimo ha e aroloe ho tsoa tšebelisong ea thepa e tala, lisebelisoa, theknoloji, tsamaiso ea lintlha tse 'ne tsa tlhahiso le theknoloji e amanang le eona.
Lisebelisoa tse tala ke lintlha tsa bohlokoa tse khethollang litšobotsi tsa motheo tsa thepa ea khabone, 'me ts'ebetso ea thepa e tala e khetholla ts'ebetso ea thepa e entsoeng ka khabone. Bakeng sa tlhahiso ea li-electrode tsa graphite tsa UHP le HP, coke ea nale ea boleng bo holimo ke khetho ea pele, empa hape le asphalt ea boleng bo holimo ea binder, asphalt ea moemeli ea kenyang. Empa ke lisebelisoa tse tala tsa boleng bo holimo feela, khaello ea lisebelisoa, theknoloji, lintlha tsa tsamaiso le theknoloji e amanang le eona, e boetse e sitoa ho hlahisa electrode ea graphite ea UHP ea boleng bo holimo.
Sengoloa sena se shebane le litšobotsi tsa coke ea nale ea boleng bo holimo ho hlalosa maikutlo a mang a botho, bakeng sa bahlahisi ba coke ea nale, bahlahisi ba li-electrode, le litsi tsa lipatlisiso tsa saense ho buisana ka tsona.
Leha tlhahiso ea liindasteri ea nale coke Chaena e le morao ho feta ea likhoebo tsa kantle ho naha, e ntlafetse ka potlako lilemong tsa morao tjena 'me e qalile ho ba le sebopeho. Ha e le ka bongata ba tlhahiso eohle, e ka fihlela tlhoko ea nale coke bakeng sa li-electrode tsa UHP le HP graphite tse hlahisoang ke likhoebo tsa khabone tsa lehae. Leha ho le joalo, ho ntse ho e-na le sekheo se itseng boleng ba nale coke ha e bapisoa le likhoebo tsa kantle ho naha. Ho feto-fetoha ha ts'ebetso ea sehlopha ho ama tlhoko ea nale coke ea boleng bo holimo tlhahisong ea electrode e kholo ea UHP le HP graphite, haholo-holo ha ho na nale coke ea boleng bo holimo e ka fihlelang tlhahiso ea lenonyello la electrode ea graphite.
Likhamphani tsa khabone tsa kantle ho naha tse hlahisang litlhaloso tse kholo tsa UHP, electrode ea graphite ea HP hangata ke khetho ea pele ea coke ea peterole ea boleng bo holimo e le coke ea mantlha ea thepa e tala, likhoebo tsa khabone tsa Majapane le tsona li sebelisa coke ea nale ea letoto la mashala e le thepa e tala, empa feela bakeng sa litlhaloso tse latelang tsa tlhahiso ea electrode ea graphite ea φ 600 mm. Hona joale, coke ea nale Chaena ke haholo-holo coke ea nale ea letoto la mashala. Tlhahiso ea electrode ea graphite ea boleng bo holimo ea UHP e kholo ke likhoebo tsa khabone hangata e itšetleha ka coke ea nale ea letoto la peterole e tsoang kantle ho naha, haholo-holo tlhahiso ea motsoako oa boleng bo holimo le coke ea oli ea Suishima ea Japane e tsoang kantle ho naha le coke ea oli ea HSP ea Brithani e le coke ea thepa e tala.
Hona jwale, nale coke e hlahiswang ke dikgwebo tse fapaneng hangata e bapiswa le di-index tsa tshebetso ya kgwebo ya nale coke ya dinaha tse ding ka di-index tsa tshebetso tse tlwaelehileng, tse kang dikahare tsa molora, bongata ba nnete, dikahare tsa sebabole, dikahare tsa naetrojene, kabo ya boholo ba dikarolwana, coefficient ya katoloso ya mocheso le tse ding. Leha ho le jwalo, ho ntse ho na le kgaello ya di-grade tse fapaneng tsa sehlopha sa nale coke ha e bapiswa le dinaha tse ding. Ka hona, tlhahiso ya nale coke ka puo ya setso le bakeng sa "thepa e kopaneng", e ke ke ya bontsha karo ya nale coke ya boleng bo hodimo.
Ntle le papiso ea ts'ebetso e tloaelehileng, likhoebo tsa khabone li lokela ho ela hloko tlhaloso ea nale coke, joalo ka ho hlophisoa ha coefficient ea katoloso ea mocheso (CTE), matla a likaroloana, tekanyo ea anisotropy, data ea katoloso boemong bo sa thibeloang le boemong bo thibetsoeng, le mefuta ea mocheso pakeng tsa katoloso le ho fokotseha. Hobane litšobotsi tsena tsa mocheso tsa nale coke li bohlokoa haholo taolong ea ts'ebetso ea graphitization ts'ebetsong ea tlhahiso ea electrode ea graphite, ehlile, tšusumetso ea thepa ea mocheso ea asphalt coke e entsoeng ka mor'a ho besa binder le asphalt ea moemeli ea kenyang ha e qheleloe ka thoko.
1. Papiso ea anisotropy ea nale coke
(A) Sampole: φ 500 mm UHP electrode body ea fektheri ea khabone ea lapeng;
Coke ea nale ea thepa e tala: Kereiti e ncha ea Lik'hemik'hale ea LPC-U ea Japane, karolelano: Kereiti ea 100% LPC-U; Tlhahlobo: Semela sa SGL Griesheim; Matšoao a ts'ebetso a bontšitsoe ho Tafole ea 1.
(B) Sampole: φ 450 mmHP 'mele oa elektrode oa fektheri ea khabone ea lapeng; Coke ea nale ea thepa e tala: coke ea nale ea oli ea fektheri ea lapeng, karolelano: 100%; Tlhahlobo: Semela sa Khabone sa Shandong Bazan; Matšoao a ts'ebetso a bontšitsoe ho Tafole ea 2.
Jwalo ka ha ho ka bonwa papisong ya Tafole ya 1 le Tafole ya 2, sehlopha sa lPC-U sa nale coke ya ditekanyo tse ntjha tsa mashala tsa dikhemikhale tsa letsatsi le letsatsi se na le anisotropy e kgolo ya thepa ya mocheso, moo anisotropy ya CTE e ka fihlang ho 3.61 ~ 4.55, mme anisotropy ya resistivity le yona e kgolo, e fihlang ho 2.06 ~ 2.25. Ntle le moo, matla a ho flexural a nale coke ya peterole ya lapeng a betere ho feta a nale coke ya dikhemikhale tse ntjha tsa letsatsi le letsatsi ya LPC-U. Boleng ba anisotropy bo tlase haholo ho feta ba nale coke ya dikhemikhale tse ntjha tsa letsatsi le letsatsi ya LPC-U.
Tlhahlobo ea anisotropic ea tlhahiso ea elektrode ea matla a phahameng a graphite ke tekanyo ea anisotropic ea tlhahlobo ea boleng ba thepa e tala ea nale kapa ha se mokhoa oa bohlokoa oa tlhahlobo, boholo ba tekanyo ea anisotropy, ehlile, bo boetse bo na le tšusumetso e itseng ts'ebetsong ea tlhahiso ea elektrode, tekanyo ea anisotropy ea motlakase e nang le ts'ebetso ea ho tšoha e chesang haholo ho feta tekanyo ea anisotropy ea matla a tloaelehileng a elektrode e nyane e ntle.
Hona jwale, tlhahiso ya coke ya nale ya mashala Chaena e kgolo haholo ho feta ya coke ya nale ya peterole. Ka lebaka la ditjeo tse hodimo tsa thepa e tala le theko ya dikgwebo tsa khabone, ho thata ho sebedisa coke ya nale ya lapeng ya 100% tlhahisong ya electrode ya UHP, ha o ntse o eketsa karolo e itseng ya coke ya peterole e nang le calcted le phofo ya graphite ho hlahisa electrode. Ka hona, ho thata ho lekola anisotropy ya coke ya lapeng ya nale.
2. Litšobotsi tse otlolohileng le tse pharaletseng tsa nale coke
Tshebetso ya phetoho ya mola le ya volumetric ya nale coke e bonahala haholo-holo tshebetsong ya graphite e hlahiswang ke electrode. Ka phetoho ya mocheso, nale coke e tla feta katolosong le ho honyeleng ha mola le volumetric nakong ya tshebetso ya ho futhumatsa ha graphite, e leng se amang ka ho toba phetoho ya mola le volumetric ya billet e besitsweng ya electrode tshebetsong ya graphite. Sena ha se tshwane le tshebediso ya thepa e fapaneng ya coke e tala, dikereiti tse fapaneng tsa nale coke di fetoha. Ho feta moo, mefuta ya mocheso ya diphetoho tsa mola le volume tsa dikereiti tse fapaneng tsa nale coke le calcined petroleum coke le yona e fapane. Ke ka ho tseba sebopeho sena sa lera la lera feela re ka laolang le ho ntlafatsa tlhahiso ya tatellano ya dikhemikhale tsa graphite hamolemo. Sena se bonahala haholo tshebetsong ya graphitization ya letoto.
Tafole ea 3 e bonts'a liphetoho tse otlolohileng le tsa bophahamo le maemo a mocheso a mekhahlelo e meraro ea peterole needle coke e hlahisoang ke Conocophillips UK. Katoloso e otlolohileng e etsahala pele ha oli needle coke e qala ho futhumala, empa mocheso qalong ea ho fokotseha ha mola hangata o salla morao mochesong o phahameng ka ho fetisisa oa calcination. Ho tloha ho 1525℃ ho isa ho 1725℃, katoloso e otlolohileng ea qala, 'me mocheso oa ho fokotseha ha mola kaofela o mosesaane, ke 200℃ feela. Mocheso oa ho fokotseha ha mola oohle oa peterole e tloaelehileng e liehang ho lieha coke o moholo haholo ho feta oa needle coke, 'me mashala a nale coke a pakeng tsa tse peli, a maholo hanyane ho feta oli needle coke. Liphetho tsa liteko tsa Osaka Industrial Technology Test Institute Japane li bontša hore ha ts'ebetso ea mocheso ea coke e mpefala, mocheso oa ho fokotseha ha mola o moholo, ho fihlela ho 500 ~ 600℃ mocheso oa ho fokotseha ha mola o tlase, 'me qalo ea mocheso oa ho fokotseha ha mola o tlase, ho 1150 ~ 1200℃ ho qalile ho etsahala ho fokotseha ha mola, e leng litšobotsi tsa peterole e tloaelehileng e liehang coke.
Ha thepa ea mocheso e le betere 'me anisotropy ea needle coke e le kholoanyane, mocheso oa ho honyela ho otlolohileng o fokotseha. Mefuta e meng ea mocheso oa ho honyela ho otlolohileng ea oli ea boleng bo holimo e pakeng tsa 100 ~ 150℃ le 100 feela. Ho molemo haholo bakeng sa likhoebo tsa khabone ho tataisa tlhahiso ea ts'ebetso ea graphitization kamora ho utloisisa litšobotsi tsa katoloso e otlolohileng, ho honyela le katoloso bocha ea coke ea thepa e tala e fapaneng, e ka qobang lihlahisoa tse ling tsa litšila tsa boleng bo sa hlokahaleng tse bakoang ke ho sebelisa mokhoa oa setso oa boiphihlelo.
Qeto ea 3
Tseba litšobotsi tse fapaneng tsa thepa e tala, khetha ho bapisa lisebelisoa ka nepo, motsoako o motle oa theknoloji, 'me tsamaiso ea khoebo e na le saense le kahlolo e molemo haholoanyane, letoto lena la tsamaiso eohle ea ts'ebetso le laoloa ka thata ebile le tsitsitse, ho ka thoe le na le motheo oa ho hlahisa elektrode ea graphite ea boleng bo holimo ea matla a phahameng, matla a phahameng.
Nako ea poso: Tshitwe-30-2021