Domestic mafuta, mankhwala ndi mafakitale ena mphamvu amafuna ambiri otsika kutentha zitsulo kupanga ndi kupanga zosiyanasiyana kupanga ndi kusungirako zipangizo monga liquefied mafuta amafuta, madzi ammonia, madzi oxygen ndi madzi asafe.
Malinga ndi dongosolo la 12 la China la zaka zisanu, chitukuko cha mphamvu ya petrochemical chidzakonzedwa bwino ndipo chitukuko cha mafuta ndi gasi chidzafulumizitsa zaka zisanu zikubwerazi. Izi zidzapereka mwayi waukulu wamsika ndi chitukuko cha mafakitale opanga mphamvu ndi kusungirako zida zosungiramo pansi pa kutentha kochepa kwa ntchito, komanso kulimbikitsa chitukuko chaQ355D otsika kutentha kugonjetsedwa amakona anayi chubuzipangizo. Monga mapaipi otsika kwambiri amafunikira kuti zinthu zikhale ndi mphamvu zowonjezera komanso kutentha kwapamwamba komanso kutsika kwa kutentha, mapaipi otsika kutentha amafunikira chiyero chapamwamba chachitsulo, ndipo ndi chiŵerengero cha mphete cha kutentha, chiyero chachitsulo chimakhalanso chapamwamba. Q355Eultra-low kutentha lalikulu chubuimapangidwa ndikupangidwa. Chitsulo cha billet chingagwiritsidwe ntchito mwachindunji ngati chitoliro chopanda chitsulo chotumizira. Kupanga kumaphatikizapo mfundo zitatu izi:
(1)Kusungunula ng'anjo yamagetsi yamagetsi: zitsulo zachitsulo ndi chitsulo cha nkhumba zimagwiritsidwa ntchito ngatizida zogwiritsira ntchito, pakati pa zomwe zitsulo zowonongeka zimakhala ndi 60-40% ndi chitsulo cha nkhumba ndi 30-40%. Kutengera ubwino wa alkalinity mkulu, kutentha otsika ndi mkulu chitsulo okusayidi wa kopitilira muyeso mphamvu kalasi magetsi arc ng'anjo, kusonkhezera kwambiri mpweya decarburization ndi mtolo mpweya mfuti pa khoma ng'anjo, ndi kusungunula koyamba zitsulo-kupanga madzi ndi mkulu impedance ndi kopitilira muyeso-mkulu-mkulu mphamvu ya ng'anjo yamagetsi, nayitrogeni mphamvu kalasi, hydrogen zitsulo ndi zinthu zoipa phosphorous. osakhala zitsulo inclusions mu chitsulo chosungunuka akhoza bwino kuchotsedwa. Mapeto a carbon zitsulo zosungunuka mu ng'anjo yamagetsi yamagetsi <0.02%, phosphorous <0.002%; Deoxidation yakuya yachitsulo chosungunula imachitika pobowola ng'anjo yamagetsi, ndipo mpira wa A1 ndi carbasil zimawonjezedwa kuti zitheke kutsitsa.
Zomwe zotayidwa muzitsulo zosungunuka zimayendetsedwa pa 0,09 ~ 1.4%, kotero kuti ma Al203 omwe amapangidwa muzitsulo zosungunula amakhala ndi nthawi yokwanira yoyandama, pamene zitsulo zotayidwa za chubu billet zitsulo pambuyo poyenga LF, chithandizo cha VD vacuum ndi kuponyedwa kosalekeza kumafika 0.020% ~ 02040% ndi 0. oxidation mu njira yoyenga ya LF. Mbale ya nickel yowerengera 25 ~ 30% ya aloyi yonse imawonjezeredwa ku ladle kuti agwirizane; Ngati carbon zili wamkulu kuposa 0.02%, mpweya zili kopitilira muyeso-otsika zitsulo kutentha sangathe kukwaniritsa kufunika kwa 0.05 ~ 0.08%. Komabe, pofuna kuchepetsa makutidwe ndi okosijeni wa chitsulo chosungunula, m`pofunika kulamulira mpweya kuwomba mwamphamvu ng'anjo khoma masango mpweya mfuti kulamulira zili mpweya wa chitsulo chosungunuka m'munsimu 0,02%; Pamene phosphorous zili wofanana 0,002%, phosphorous zili mankhwala kufika oposa 0,006%, amene adzawonjezera zoipa zinthu phosphorous okhutira ndi zimakhudza otsika kutentha kulimba kwa chitsulo chifukwa dephosphorization wa phosphorous munali slag ku ng'anjo magetsi pogogoda ndi Kuwonjezera ferroalloy pa LF refining. Kutentha kwa kutentha kwa ng'anjo yamagetsi yamagetsi ndi 1650 ~ 1670 ℃, ndipo eccentric bottom tapping (EBT) imagwiritsidwa ntchito kuteteza oxide slag kulowa mu ng'anjo yoyenga ya LF.
(2)Pambuyo pakuyenga kwa LF, chopangira mawaya chimadyetsa 0.20 ~ 0.25kg/t waya woyenga wa CA wachitsulo kuti awononge zonyansazo ndikupanga zophatikizika muzitsulo zosungunula kukhala zozungulira. Pambuyo pa chithandizo cha Ca, chitsulo chosungunuka chimawomberedwa ndi argon pansi pa ladle kwa mphindi zoposa 18. Mphamvu ya kuwomba kwa argon ingapangitse chitsulo chosungunuka kuti chisawonekere, kotero kuti zozungulira zozungulira muzitsulo zosungunula zimakhala ndi nthawi yoyandama yokwanira, kusintha chiyero cha chitsulo, ndi kuchepetsa zotsatira za zitsulo zozungulira pa kulimba kwamphamvu kwa kutentha kochepa. Kuchuluka kwa kudyetsa kwa waya koyera kwa CA kumakhala kochepa kuposa 0.20kg / t chitsulo, zophatikizika sizingasinthidwe kwathunthu, ndipo kuchuluka kwa Ca waya kumaposa 0.25kg / t chitsulo, zomwe nthawi zambiri zimawonjezera mtengo. Kuonjezera apo, pamene kuchuluka kwa chakudya cha Ca line ndi kwakukulu, chitsulo chosungunula chimawomba mwamphamvu, ndipo kusinthasintha kwa chitsulo chosungunuka kumapangitsa kuti chitsulo chosungunula chizilowetsedwa ndi okosijeni yachiwiri imapezeka.
(3)Chithandizo cha vacuum ya VD: tumizani chitsulo chosungunuka cha lf choyengedwa ku siteshoni ya VD kuti mukachize vacuum, sungani chotsekeracho pansi pa 65pa kwa mphindi zopitilira 20 mpaka slag itasiya thovu, tsegulani chivundikiro cha vacuum, ndikuwomba argon pansi pa ladle kuti chitsulo chosungunula chikuwumbike.
Nthawi yotumiza: Sep-02-2022
