Chav tsev me me sib cais siv cov pa cua ua cov khoom siv sib txawv xws li oxygen distillation txheej txheem los cais cov ntsiab lus sib txawv ntawm cov pa roj sib txawv ntawm huab cua. Cov cuab yeej no feem ntau yog tsim ntawm cov pib xws li nias, kev lim dej, tub yees, thiab distillation, thiab muaj ntau yam zoo. Nws tau txais tag nrho cov txheej txheem qis heev, chav sov molecular sab sole, thiab plc tswj, nrog ruaj khov thiab txhim khu kev qha. Cov khoom muaj tus nqi siab, muaj kev huv siab thiab tsis tshua muaj zog noj, thiab tuaj yeem ua haujlwm stably rau lub sijhawm ntev. Lub system Cheebtsam yog modular thiab tuaj yeem hloov tau raws li cov neeg siv xav tau. Nrog rau npaj tsim qauv kos duab thiab tsim nyog nplua qauv, txoj kev voj voog txheej txheem yog cov luv luv.
Cov hauv paus ntsiab lus ntawm cov pa sib cais los ntawm cryogenic distillation
Distillation yees yog ntauwd-qauv khoom siv rau kev ua kua dawb-kua sib tiv tauj siv rau distillation. Muaj ntau ntau hom: ntim cov yees thiab phaj yees. Phaj yees tau nruab nrog ntau txheej txheej ntawm cov phaj, thiab muaj ib txheej ua kua ntawm ib qho qhov siab ntawm cov phiaj. Tus txheej txheem ua haujlwm ntawm cov tsiaj ntau ntawm cov pej thuam yog tib yam li ntawm cov pej xeem phaj. Cov nyhuv ntawm ib qho qhov siab ntawm cov ntawv ntim yog sib npaug ntawm qhov ntawm lub vev xaib lossis lub vev xaib theoretical. Tus me dua qhov siab ntawm cov phaj sib npaug (HETP), qhov zoo dua qhov kev hloov pauv loj thiab sib cais cov nyhuv ntawm cov txheej. Lub distillation yees siv nyob rau hauv cov pa sib cais feem ntau yog ob-theem distillation yees, uas yog qhov qis dua pej thuam thiab pej thuam qaum. Lub pej thuam qis dua feem ntau yog cov pej thuam phaj, thiab lub pej thuam sab sauv feem ntau yog ib tus pej thuam uas tau ntim ntau. Tam sim no nrog kev nce qib ntawm thev naus laus zis, tus nqi tsim ntawm cov yees tau ntim ntau; Tsis tas li ntawd, tau ntim cov yees muaj qhov kom zoo dua ntawm qhov qis qis poob, uas tuaj yeem txo cov qhov hluav taws xob siab ntawm lub compressor thiab yog li txo cov nqi kev ua haujlwm. Yog li no, ntau qis ntawm cov tub yees cua sib cais yog tam sim no pib siv cov yees. Cov huab cua sib cais ob chav-cais cov huab cua nyob rau hauv qis Ntauwd (High-compivering nws rau hauv cov pa ntshiab thiab cov pa roj av; Tom qab ntawd txuas ntxiv mus rau hauv cov neeg nyob hauv lub nroog sab saud (qis-siab Tower), thiab thaum kawg tau txais cov pa thiab cov khoom lag luam nitrogen. Lub Condenser RBOILER yog qhov txuas ntawm cov yees thiab qis dua. Nws siv lub nruab nrab siab nitrogen nyob rau sab saum toj ntawm qis dua cov kua oxygen), yog li cov nitrogen yog condensed thiab cov kua oxygen yog evaporated. Qhov ob-theem distillation ntauwd muaj cov khoom lag luam ntau dua thiab tuaj yeem sib txuas tau ob npaug rau cov khoom lag luam muaj kuab lom thiab qib siab heev.
Tom qab huab cua nyob rau hauv cov huab cua nkag mus rau hauv lub compressor, nws dhau los ua huab cua compressed. The compressed air passes through the air purification system to remove impurities such as moisture and carbon dioxide that will freeze and block the pipeline and heat exchanger channels, as well as hydrocarbons and nitrogen oxides that will cause explosion risks to the condenser reboiler connecting the upper and lower towers. Tom qab ntawd nws txias hauv cov pa hluav taws xob loj rau hauv cov kua roj ua kua thiab xa mus rau hauv qab ntawm lub pej thuam qis dua los ua cov roj nce siab ntawm cov roj ntau. Vim tias nws cov ntsiab lus oxygen yog 2 0. 95%, nws saturation kub yog 1} 0.8k ntawm kev ua haujlwm ntawm 0.6mpa. Cov kua nitrogen condensed nyob rau hauv lub condenser rebenser rebenser romboiler ntws tawm ntawm sab saum toj ntawm lub pej thuam qis dua li cov dej ntauwd ntawm cov pej thuam qis. Vim tias nws cov ntsiab lus oxygen feem ntau qis dua 1%, qhov ntsuas kub ntawm kev ua haujlwm ntawm 0.6MPA yog 96.4K. Los ntawm cov huab cua sov, nws tuaj yeem pom tau tias cov roj nce siab nyob hauv cov pej thuam qis dua qhov kub ntawm cov kua dej ntws los ntawm sab saum toj ntawm cov pej thuam. Cov roj nce siab nyob hauv cov pej thuam qis dua yuav ntsib cov kua nrog qhov kub tsawg dua li nws thaum hla dhau txhua tus pej xeem lub sijhawm. Tom qab kev sib pauv cua sov, ntsuas kub ntawm cov pa roj yuav txo qis, thiab qee cov roj yuav txuas ntxiv mus rau hauv cov kua. Txij li thaum oxygen yog lub siab-boiling tivthaiv nrog lub siab kub ua ke nrog lub zog kub, thaum lub sij hawm cov pa roj av, yog li cov pa dej siab nyob rau hauv cov roj av ntxiv. Cov txheej txheem no hu ua ib nrab hws. Tom qab ntau lub hws ib nrab, feem ntau ntawm cov pa oxygen hauv cov roj muaj hws ntawm cov pa hluav taws xob hauv cov roj muaj peev xwm ncav cuag ntau dua 99%. Ntu nitrogen no tau qhia rau hauv cov condenser rebenser rebenser ribiler, thiab condensed rau hauv cov kua pa ua kua ntawm cov pej thuam sab sauv ntawm cov pej thuam distillation ntauwd. Ib feem ntawm cov kua nitrogen yog siv los ua cov dej ua kua ntawm cov pej thuam qis, thiab lwm yam ntawm cov kua dej ua kua ntawm cov pej thuam sab sauv ntawm cov pej thuam distillation ntauwd. Thaum cov hmoov ua kua dej ntws tawm, nws ntsib qhov ntau dua roj nce siab los ntawm hauv qab ntawm tus pej thuam. Tom qab sib pauv cua sov, ib feem ntawm cov kua yuav vaporized. Txij li thaum nitrogen yog lub boiling point tivthaiv thiab oxygen yog lub siab-npau taws taw tes nitrogen sib xyaw, thiab cov kua pa tawm hauv cov kua seem. Txoj kev no yog hu ua ib nrab evaporation. Nyob rau hauv txoj kev no, ib nrab evaporation yog nqa tawm ib zaug ntxiv thiab thaum lub pej thuam ua kua, nplua nuj kua huab cua nrog cov duab pa oxygen ntawm 38% ~ 40% tuaj yeem tau txais. Yog li no, tom qab ntau ib nrab evaporation thiab ib nrab ntawm cov txheej txheem hws nyob hauv nitrogen cov ntsiab lus ntawm ntau dua 99% thiab cov pa roj oxygen ntawm 38% ~ 40%.
Cov pa roj oxygen-nplua nuj muab xa mus rau lub siab tshaj tom qab lub siab dua tom qab lub zog thawb thiab siv ua cov khoom siv raw rau tom qab distillation. Lub sauv ntauwd distillation yog zoo li cov pej thuam qis distillation. Tom qab ntau ib nrab ntawm evaporations nyob rau hauv cov kua ntws hauv cov kua ntws, cov nitrogen tivthaiv protection ntau dua, thiab cov kua pa tawm hauv cov kua txuas ntxiv ntxiv. Thaum nws mus txog hauv qab ntawm cov pej thuam sab sauv, cov kua ntshiab ua kua oxygen nrog cov ntsiab lus oxygen ntawm 99.}% Tuaj yeem tau txais. Ib feem ntawm cov pa oxygen rau hauv qab ntawm sab saud nqus cua sov hauv cov pa roj oxyen, thiab lwm yam raug coj tawm raws li cov khoom siv oxygen thiab nkag mus rau lub tank tank. Nyob rau hauv lub siab ua hauj lwm siab ntawm 0. 15mpa, qhov tseeb, qhov tseeb, qhov siv roj uas muaj ntau ntxiv rau cov roj av sab sauv. Thaum lub sij hawm Ascent Ascent, tom qab ntau ib nrab lub hws, ntau cov pa roj oxygen muaj condensed, yog li cov pa roj nce nce ntxiv. Tom qab ntau ntau cov hws, cov roj nce zuj zus tseem muaj cov pa roj oxygen. Txhawm rau txo cov kev ploj ntawm cov pa oxygen, cov distillation yuav tsum tau nqa tawm dua. Cov kua nitrogen kos los ntawm condenser rebenser rebenser muaj cov ntsiab lus ntau dua 99%. Cov khoom noj ua kua yog ntsaws thiab subcooled thiab xa mus rau sab saum toj ntawm lub siab tshaj plaws li reflux kua. Cov roj nce siab nyob ntawm cov kua dej cua qhib chaw nres nkoj thiab cov tshuaj tiv thaiv kua rau saum toj ntawm pej thuam yog ib nrab teev ob peb zaug. Thaum nws mus txog sab saum toj ntawm cov khoom lag luam sab saud, cov khoom lag luam nitrogen zoo nrog cov ntsiab lus nitrogen ntau dua 99.99% tuaj yeem tau txais. Qhov saum toj no yog cov txheej txheem ntawm cais cov cua rau hauv nitrogen thiab oxygen nyob rau hauv distillation pej thuam.
Cim npe nrov: Cov pa me me sib cais cog, Tuam Tshoj me me cua sib cais cog manufacturers, cov chaw muag khoom
