Coal pitch, yog luv luv rau thee tar pitch, thee tar distillation processing tom qab tshem tawm cov kua distillate residue, belongs rau ib hom asphalt, feem ntau rau cov kua nplaum, semi-khoom los yog khoom, dub thiab ci, feem ntau muaj cov pa roj carbon 92. ~ 94%, hydrogen txog 4 ~ 5%. Coal tar pitch yog ib yam khoom tseem ceeb hauv cov txheej txheem ntawm cov thee tar ua thiab yog cov khoom siv tsis hloov pauv rau cov pa roj carbon ntau lawm.
Lub hom phiaj ntawm tar distillation yog kom mloog zoo cov ntsiab lus nrog cov ntsiab lus kub zoo sib xws hauv tar rau hauv cov feem sib txuas rau kev ua tiav thiab kev sib cais ntawm cov khoom monomer. Cov residue ntawm distillate extraction yog thee tar suab, accounting rau 50% ~ 60% ntawm thee tar.
Raws li qhov sib txawv softening cov ntsiab lus, thee asphalt muab faib ua asphalt kub asphalt (mos asphalt), nruab nrab kub asphalt (zoo tib yam asphalt), kub asphalt (nyuaj asphalt) peb pawg, txhua qeb muaj No.1 thiab No.2 ob qib. .
Coal bitumen feem ntau yog siv hauv cov teb hauv qab no:
* Roj: Cov khoom sib xyaw tuaj yeem sib xyaw nrog cov roj hnyav lossis ua rau slurry siv, tuaj yeem ua lub luag haujlwm hloov cov roj hnyav.
Xim: Cov xim uas ntxiv rosin los yog turpentine thiab muab tso rau thaum ua noj roj rau cov tsev tsis muaj dej los yog cov kav dej. Nws yog tsim rau sab nraum zoov steel qauv, qhob thiab masonry waterproof txheej thiab tiv thaiv txheej, thiab tuaj yeem pleev xim thiab pleev xim rau hauv chav tsev kub.
* Kev tsim kho txoj kev, cov khoom siv hauv tsev: feem ntau sib xyaw nrog roj av asphalt, thee asphalt thiab roj av asphalt piv, muaj qhov pom tseeb zoo thiab qhov sib txawv. Cov thee asphalt tsis zoo nyob rau hauv plasticity, tsis zoo nyob rau hauv qhov kub thiab txias, nkig nyob rau hauv lub caij ntuj no, softening nyob rau hauv lub caij ntuj sov, thiab aging ceev.
* Binder: Ua electrode, anode muab tshuaj txhuam thiab lwm yam khoom siv roj hmab, feem ntau hloov asphalt. Feem ntau, hloov kho asphalt yog npaj los ntawm nruab nrab kub asphalt. Hauv Suav teb, cov txheej txheem cua sov feem ntau yog siv, thiab cov roj siv los ua roj los ua kom sov asphalt hauv reactor. Thaum kawg, cov khoom hloov kho asphalt tau los ntawm kev sib cais thiab granulation.
* Asphalt coke: khoom seem ntawm thee asphalt tom qab kub retorting lossis qeeb coking. Asphalt coke feem ntau yog siv los ua raw khoom rau cov khoom siv tshwj xeeb carbon, uas yog qhov tseem ceeb rau kev tsim khoom semiconductor thiab cov khoom siv hnub ci vaj huam sib luag. Nws yog dav siv los ua cov khoom siv electrode rau txhuas refining, carbonized khoom rau hluav taws xob rauv steelmaking thiab tshwj xeeb carbon khoom raw khoom rau semiconductor.
* Koob coke: refined mos asphalt los ntawm raw khoom pretreatment, ncua coking, kub kub calcination peb txheej txheem, mas siv nyob rau hauv electrode manufacturing thiab tshwj xeeb carbon cov khoom. Cov khoom tsim los ntawm nws cov ntaub ntawv raw yog tus cwj pwm los ntawm qhov tsis muaj zog, tsis tshua muaj thermal expansion coefficient, muaj zog kub tsis kam, siab mechanical zog thiab zoo oxidation kuj.
* Carbon fiber: tshwj xeeb fiber ntau nrog ntau tshaj 92% carbon cov ntsiab lus tau los ntawm asphalt los ntawm refining, spinning, pre-oxidation, carbonization los yog graphitization.
* Roj hnov, activated carbon, carbon dub thiab lwm yam siv.
Lub sij hawm xa tuaj: Nov-30-2022