Ntshiab refined thee tar: eco-friendly daim ntaub ntawv? 

Koj pom 'ntshiab refined thee tar' thiab 'eco-friendly' nyob rau hauv tib kab lus, thiab koj thawj qhov kev xav yuav raug thuam. kuv tau. Tau ntau xyoo lawm, thee tar's legacy tau khi rau kev lag luam hnyav, PAHs, thiab ib puag ncig kho mob taub hau. Tab sis qhov kev tshem tawm qhov kev xav ntawd tsis nco qab qhov tsis txaus ntseeg ntawm qhov 'kev ua kom zoo' txhais tau tias nyob rau hauv cov ntsiab lus kev lag luam niaj hnub no, thiab qhov twg cov ntaub ntawv tshawb fawb tau ntsiag to thawb cov ciam teb. Nws tsis yog hais txog kev ntxuav cov khoom qub; Nws yog hais txog kev nug yog tias cov txheej txheem ua tiav, thaum siv nrog kev ua tiav thiab kev tswj xyuas tag nrho lub neej, tuaj yeem haum rau cov qauv kev ruaj ntseg niaj hnub. Cov lus teb tsis yog ib qho yooj yim yog los yog tsis yog-nws yog ib qho ntawm 'nws nyob ntawm' raws li daim ntawv thov, hloov cov logic, thiab kev tswj cov dej khib nyiab. Cia peb qhib qhov ntawd.

Txoj Kev Kho Kom Zoo Dua: Qhov twg 'Pure' pib teeb meem

Tsis yog txhua qhov thee tar yog tsim sib npaug. Cov khoom uas muab tag nrho pawg ib lub npe phem feem ntau yog cov khoom siv tsis zoo los yog cov khoom siv me me. Thaum peb tham txog ntshiab refined coal tar, tshwj xeeb tshaj yog rau cov ntawv thov kev lag luam, peb tab tom xa mus rau cov khoom lag luam uas tau dhau los ua qhov tseem ceeb thiab kev kho mob kom tshem tawm cov tsis muaj zog, qis qis thiab ua kom pom tseeb cov tshuaj tsw qab tshwj xeeb. Qhov tseem ceeb yog qhov pib tshem tawm. Ib yam khoom zoo li lub siab-pitch binder los ntawm tus neeg muag khoom nrog cov khoom siv sib sib zog nqus-hais tias, Hebei Yaofa Carbon Co., Ltd., uas tau ua cov pa roj carbon ntau tshaj 20 xyoo-yog lub ntiaj teb sib nrug los ntawm cov khoom siv hluav taws xob, tsis muaj tshuaj lom neeg. Lawv tsom mus rau qhov zoo ib yam, qib siab carbon additives thiab electrodes xav tau cov khoom noj uas muaj peev xwm ua tau. Qhov kev ua kom zoo no txo ​​qis qhov sib txawv thiab qhov siab ntawm cov teeb meem teeb meem feem ntau ntawm qhov kawg, uas yog thawj zaug, tsis muaj kev sib tham mus rau ib qho peev xwm 'eco-friendly' thov.

Qhov twg cov roj hmab raws li txoj kev yog hloov. Ib qho ntawm cov lus pom zoo tshaj plaws 'eco-friendly' sib cav yog thaum cov thee refined thee tar pitch ua raws li kev khi hauv carbon anodes rau txhuas smelting lossis hauv graphite electrodes. Qhov 'phooj ywg' yog qhov sib piv. Yog tias lwm txoj hlua khi tau muab los ntawm cov roj av tshiab, qhov kev sib cav yog tias siv cov khoom siv los ntawm cov khoom siv hlau (coal tar) yog ib hom kev lag luam symbiosis uas ntxiv tus nqi rau cov dej khib nyiab. Nws tsis yog 'huv' hauv qhov kev nkag siab zoo, tab sis nws tuaj yeem ua kom muaj txiaj ntsig zoo dua ntawm qib system. Cov txheej txheem carbonization hauv kev tsim hluav taws xob kuj tseem kaw ib feem tseem ceeb ntawm cov pa roj carbon monoxide rau hauv cov matrix ruaj khov, txo cov emissions thaum lub sij hawm cov khoom siv theem piv rau cov binders ruaj khov. Nws yog kev xam lub neej, tsis yog lub ntsiab lus.

Kuv tau pom tej yaam num ntog los ntawm ignoring qhov pib. Ib tus neeg siv khoom ib zaug xav siv cov khoom pheej yig dua, semi-refined tar rau cov khoom tshwj xeeb carbon, ntxias los ntawm tus nqi qis dua. Qhov tsis sib xws hauv viscosity thiab coking tus nqi tau ua rau muaj kev tsis lees paub ntau lawm, cov khoom siv hluav taws xob pov tseg hauv recalibrating furnaces, thiab thaum kawg, cov kab mob sib kis tau dhau los ua kev lav phib xaub. Tag nrho cov nqi ib puag ncig thiab kev lag luam deb tshaj qhov pib txuag nyiaj. Qhov kev paub ntawd tau ua rau kuv xav tias 'ntshiab' thiab 'refined' tsis yog lag luam fluff ntawm no; lawv yog prerequisites rau efficiency thiab pov tseg minimization downstream. Koj tsis tuaj yeem tham txog kev siv ib puag ncig yog tias koj cov khoom siv hauv paus tsis ruaj khov.

Daim ntawv thov Niche: Qhov twg qhov kev sib cav tuav dej

Tshaj li qhov loj-scale electrode khi, muaj niche thaj chaw uas cov khoom ntawm refined thee tar yog tiag tiag nyuaj los hloov nrog tam sim no muaj 'greener' lwm txoj. Xav tias tshwj xeeb carbon composites rau aerospace los yog cov ntaub ntawv sealing zoo. Nyob rau hauv cov ntaub ntawv no, kev ua tau zoo yuav tsum tau - heev thermal stability, tshwj xeeb conductivity, impermeability - yog li nruj heev uas cov pa roj carbon hneev taw ntawm ib tug tsis ua hauj lwm (ib feem uas tsis tau raws li spec thiab yuav tsum tau muab pov tseg, los yog ib tug foob uas xau) dwarfs tus hneev taw ntawm cov ntaub ntawv uas nws tus kheej. Ntawm no, 'eco-friendly' lub kaum sab xis yog hais txog kev ua haujlwm ntev thiab kev ua haujlwm ntev nyob rau hauv daim ntawv thov siab. Siv lub subpar binder tuaj yeem txhais tau tias cov khoom siv tau ntev li 5 xyoos es tsis txhob siv 20 xyoo, yuav tsum tau hloov ntau zaus thiab tag nrho cov khoom siv hluav taws xob thiab cov khoom pov tseg uas muaj.

Lwm qhov chaw tsim nyog saib yog nyob rau hauv kev tswj, kub-kub txheej txheem rau cov khoom siv carbon ntau lawm nws tus kheej. Ib lub tuam txhab zoo li Hebei Yaofa Carbon, nrog rau nws txoj kev tsom mus rau UHP graphite electrodes, yog qhov tseem ceeb hauv kev lag luam ntawm kev hloov cov ntawv khi rau hauv cov qauv ntshiab, crystalline carbon. Nyob rau hauv lawv cov furnaces, nyob rau hauv meej tej yam kev mob, cov volatile teeb meem los ntawm lub refined suab yog ntes thiab feem ntau siv raws li ib tug thib ob roj qhov chaw rau cov txheej txheem cua sov, tsim ib tug kaw-voj zog rov qab system. Cov khoom kawg, cov graphite electrode, yog inert thiab tseem ceeb heev rau hluav taws xob arc rauv steelmaking, uas yog nws tus kheej txoj kev ruaj khov dua piv rau cov tsoos blast furnaces. Koj tuaj yeem ua raws cov saw no ntawm lawv qhov chaw ntawm https://www.yafatansu.com-Nws yog ib qho kev kawm zoo hauv kev koom ua ke hauv kev lag luam. Qhov txiaj ntsig eco yog qhov tsis ncaj tab sis tiag tiag: ua kom muaj txiaj ntsig zoo dua qub.

Peb kuj tau sim nrog kev siv cov feem cuam tshuam ultra-refined ua cov khoom ua ntej rau hluavtaws graphite hauv cov roj teeb ob peb xyoos dhau los. The theory was sound: a dense, highly aromatic feedstock could yield a good graphitic structure. Qhov kev ua tsis tiav yog purity. Taug qab hlau impurities, txawm nyob rau theem ppm, uas tuaj yeem zam tau hauv cov hlau ua hluav taws xob yog qhov kev puas tsuaj rau lithium-ion roj teeb anode. Tus nqi purification kom tshem tawm lawv tshem tawm ib puag ncig lossis kev lag luam zoo dua li roj av coke. Nws yog ib zaj lus qhia uas zoo siab tias 'ua kom zoo rau ib qho kev lag luam' tsis txhais hais tias 'ua kom zoo rau txhua tus.' Daim ntawv thov txhais tus qauv.

Cov Ntsiab Lus Tseem Ceeb Tsis Tau: Emissions thiab End-of-Life

Tsis muaj kev sib tham ncaj ncees yam tsis muaj kev sib tham txog qhov nyuaj. Thawj qhov kev sib tw ib puag ncig nrog ntshiab refined coal tar tseem tuav thiab pib ua emissions. Txawm tias refined, nws muaj PAHs. Thaum sib tov, sib sau, thiab cov theem pib ntawm ci, fume capture yog qhov tseem ceeb heev. Kuv tau mus xyuas cov nroj tsuag uas qhov no tau tswj hwm nrog cov tshuaj ntxuav tes thiab cov thermal oxidizers, tig cov pa phem rau hauv CO2 thiab dej vapor - kev lag luam tawm, tab sis tswj tau. Kuv kuj tau pom cov chaw qub uas cov emissions khiav palpable. Lub peev xwm 'eco-friendly' ntawm daim ntawv thov yog tag nrho ntawm qhov kev ua haujlwm nruj. Lub binder nws tus kheej tsis yog phooj ywg; cov engineered system nyob ib ncig ntawm nws siv tau.

Qhov kawg ntawm lub neej yog lwm tus ntxhw hauv chav. Ib qho carbon anode yog siv rau hauv lub lauj kaub aluminium. Ib qho graphite electrode yog maj mam oxidized hauv EAF. Tab sis ua li cas txog carbon composites lossis cov khoom tshwj xeeb thaum kawg ntawm lawv lub neej? Lawv yog cov pa roj carbon ntau inert, yog li kev pov tseg tsis tshua muaj kev pheej hmoo los ntawm kev pom leaching, tab sis nws tseem pov tseg. Kev rov ua dua cov ntaub ntawv no rov qab rau hauv cov dej muaj txiaj ntsig zoo yog qhov nyuaj thiab tseem tsis tau nqis peev. Qhov no yog qhov sib txawv loj hauv cov lus piav qhia sustainability. Qhov kev sib cav zoo tshaj plaws tam sim no yog tias cov ntaub ntawv no ua rau lub neej ntev, kev siv tau zoo, ncua sijhawm kawg ntawm lub neej rau ntau xyoo. Tab sis peb xav tau cov kev daws teeb meem zoo dua rau kev pov tseg qhov kawg lossis, qhov zoo, rov siv dua.

Qhov no yog qhov kev sib tham ntawm kev lag luam yuav tsum mus. Hloov chaw ntawm cov lus tsis txaus ntseeg, lub hom phiaj yuav tsum yog ntawm cov ntaub ntawv pob tshab: qhov tshwj xeeb PAH profile ntawm cov khoom ua kom zoo dua piv rau cov khoom tsis zoo, lub zog rov qab los ntawm cov khoom siv ci niaj hnub no, thiab tag nrho cov pa roj carbon monoxide ntawm cov khoom siv tar-based refined piv rau cov khoom siv hluav taws xob. Nws ntxhov siab, cov ntaub ntawv thov tshwj xeeb, tab sis nws tsuas yog qhov uas txav kev sib tham dhau ntawm kev lag luam.

Regulatory thiab Perception Hurdles

Txawm hais tias cov txheej txheem kev ua haujlwm rau qis-qhov cuam tshuam tuaj yeem ua rau qee yam kev siv, kev tswj hwm thiab kev pom zoo rau pej xeem feem ntau yog cov cuab yeej tsis tseeb. Hauv ntau lub tebchaws, 'coal tar' yog ib lo lus ua rau, lumping lub refined industrial binder nyob rau hauv nrog creosote-kho railroad ties los yog qub pavement sealants. Qhov no ua rau muaj kev cuam tshuam rau kev saws me nyuam, txawm tias cov engineers uas pom cov txiaj ntsig kev ua tau zoo. Kev taw qhia qhov no yuav tsum muaj cov ntaub ntawv ntxaws ntxaws, cov ntaub ntawv kev nyab xeeb uas qhia meej qhov sib txawv ntawm cov khoom, thiab feem ntau, cov neeg thib peb pov thawj ntawm emissions profiles thaum siv. Nws yog tus nqi ntxiv thiab qhov nyuaj uas txhua tus thawj tswj haujlwm yuav tsum ntsuas.

Los ntawm kev xa khoom, qhov no yog vim li cas kev cuam tshuam nrog cov tuam txhab tsim teeb meem. Ib lub tuam txhab nrog 20 xyoo hauv qhov kev ua si, zoo li qhov tau hais ua ntej, yuav tsum tau hloov kho nws cov txheej txheem thiab cov ntaub ntawv kom ua tau raws li cov qauv kev hloov pauv. Lawv cov khoom sib xws tsis yog hais txog qhov zoo xwb; nws yog hais txog kev tsim cov ntaub ntawv txhim khu kev qha rau kev ua raws li ib puag ncig thiab kev nyab xeeb. Thaum kuv qhia cov khoom zoo li no, kuv yuav tsum paub nws tus cwj pwm batch-rau-batch tsis yog rau kuv cov txheej txheem xwb, tab sis rau kuv daim ntawv tso cai ib puag ncig. Tus neeg muag khoom tsis ntseeg ntawm no tsis yog pheej hmoo rau kuv cov khoom; lawv pheej hmoo kuv daim ntawv tso cai ua haujlwm.

Kev xaav teeb meem kuj stifles innovation. Nws yog ib qho nyuaj rau kev ruaj ntseg R & D nyiaj txiag los txhim kho ib puag ncig profile ntawm 'coal tar' khoom dua li rau lwm txoj kev bio-based, txawm tias bio-alternative muaj nws tus kheej zais av-siv lossis kev cuam tshuam. Qhov no yog qhov tseeb ntawm daim teb. Txoj kev pragmatic tshaj plaws rau pem hauv ntej yog mus txuas ntxiv optimizing nyob rau hauv lub tsim, high-value, kev ua tau zoo-tseem ceeb daim ntawv thov qhov twg cov khoom yog qhov tseem ceeb, thiab ua siab phem siab phem txog nws cov kev txwv nyob rau lwm qhov.

Xaus: Ib qho cuab yeej, Tsis yog Panacea

Yog li, yog ntshiab refined coal tar eco-phooj ywg? Nws yog cov lus nug tsis raug. Nws yog ib qho khoom siv tshwj xeeb uas muaj qhov profile. Hauv kev tshwj xeeb, kev tswj xyuas cov ntawv thov - feem ntau yog cov khoom siv ua haujlwm siab hauv cov khoom siv roj carbon thiab graphite uas nws ua kom muaj txiaj ntsig zoo, cov dej khib nyiab valorization, thiab kev ua haujlwm ntev - nws tuaj yeem yog ib feem ntawm kev lag luam ruaj khov. Nws 'ntsuab' daim ntawv pov thawj yog tag nrho cov ntsiab lus thiab cov txheej txheem, tsis muaj qhov tshwm sim. Cov txheej txheem kho kom zoo yog qhov yuav tsum tau ua ua ntej, thiab kev tswj xyuas kev ua haujlwm thaum nws siv yog dab tsi ua lossis rhuav tshem ib qho txiaj ntsig ib puag ncig.

Qhov kev paub tiag tiag hauv ntiaj teb, los ntawm kev sim ua tsis tiav nrog cov khoom siv roj teeb kom pom kev sib koom ua ke ntawm lub zog rov qab los ntawm cov nroj tsuag electrode, qhia tau hais tias muaj kev sib faib meej. Qhov twg nws tau siv los ua qhov hloov pauv tsis tau nkag siab txog nws tus cwj pwm tshwj xeeb, nws ua tsis tiav. Qhov twg nws tau koom ua ke rau hauv cov txheej txheem kev tsim kho kom zoo, kaw-kho cov txheej txheem nrog tag nrho cov emissions tswj-zoo li hauv kev tsim cov khoom siv hluav taws xob qib siab rau hluav taws xob steelmaking-nws pom qhov ncaj ncees, thiab sib cav zoo, qhov chaw hauv ntiaj teb cov khoom siv. Lub hom phiaj yuav tsum tsis txhob rov ua dua nws, tab sis siv nws nrog qhov tseeb, kev ncaj ncees txog nws cov kev lag luam tawm, thiab kev tsom mus rau kev txo qis nws qhov cuam tshuam los ntawm lub txaj rau qhov ntxa. Qhov ntawd yog tib yam ntawm 'phooj ywg' uas tuav tau nyob rau hauv kev tshuaj xyuas hauv qhov kev lag luam no.