Hauv cov nroj tsuag tshuaj, roj refineries, steel mills, thiab thee chemical complexes, ib qho kev saib tsis taus yog qhov tseem ceeb: tsis muaj kev cuam tshuam kev lag luam roj. Oxygen, nitrogen, thiab argon - qhov pom tsis tau "cov ntshav hauv kev lag luam" - yog tias cuam tshuam, tsis txhob ua rau poob ntau lawm. Lawv tuaj yeem ua rau lub cev tsis ua haujlwm, cov kav dej oxidation, thiab txawm tias muaj kev nyab xeeb thoob plaws tag nrho cov nroj tsuag. Rau qhov loj - nplai, ntev - voj voog, siab - ruaj khov ntau lawm, cryogenic cua sib cais units (ASUs) yog zoo tib yam kev daws teeb meem.
Dab tsi Nruam Ntau Lawm Xav tau los ntawm Gas Supply
Cov ntsiab lus tseem ceeb ntawm kev tsim khoom tas mus li yog qhov yooj yim: tsis muaj kev txwv. Ib chav tsev methanol loj lossis lub qhov cub tawg tuaj yeem khiav tau ntau pua hnub- lossis ntev dua - nruab nrab ntawm kev npaj kaw. Hauv hom no, cov khoom siv hluav taws xob yuav tsum ua kom muaj kev ntseeg siab heev.
Siv nitrogen. Hauv ntau cov nroj tsuag tshuaj, nws tsis yog tsuas yog ib daim pam lossis sealing gas xwb- nws kuj yog qhov nruab nrab ntawm kev tshem tawm xwm txheej ceev. Yog hais tias nitrogen siab fluctuates los yog cov khoom tsis ua hauj lwm, oxidation nyob rau hauv reactors yuav sai kauv tawm ntawm kev tswj. Hauv me me, cov khoom lag luam poob qis; nyob rau hauv loj, lub catalyst txaj overheats thiab khoom puas. Oxygen yog qhov tseem ceeb tshaj -gasifiers, oxygen compressors, thiab downstream oxidation cov tshuaj tiv thaiv yuav tsum tau ruaj khov thiab purity mus rau ib tug yuav luag stringent degree.
Txoj kev muab khoom sib cuam tshuam-xws li kua nitrogen vaporization lossis siab viav vias adsorption (PSA)- ua haujlwm zoo rau me me - nplai lossis batch ua haujlwm. Tab sis rau kev tsim khoom tas mus li xav tau ntau txhiab lossis kaum tawm txhiab tus Nm³ / teev, cia hneev taw, muaj peev xwm vaporization, thiab kev xa khoom rov qab ua rau lub cev tsis muaj zog. PSA pib sai, tab sis nws cov purity stability thiab adsorbent degradation nyob rau lub sij hawm ntev tsis tuaj yeem phim tsib - xyoo hloov pauv ntawm cov nroj tsuag tsis tu ncua.
Vim li cas Cryogenic ASUs Yog Irreplaceable
Lub hauv paus ntsiab lus yog ncaj qha: cua txias rau rho tawm 100℃+, ces cais cov pa oxygen, nitrogen, thiab argon nyob rau hauv ib tug distillation kem raws li boiling cov ntsiab lus. Thawj qhov kev pib yuav siv sijhawm - ua ntej-txias, ua kom huv, turbo- nthuav dav, thiab kho kom ruaj khov tuaj yeem xav tau kaum ob teev lossis txawm tias ob mus rau peb hnub rau cov txheej txheem nyuaj. Tab sis ib zaug khiav, cryogenic ASUs xa dab tsi tsis muaj lwm yam thev naus laus zis tuaj yeem sib tw.
1. Flexibility thiab stability ntawm purity
Los ntawm kev kho cov kab ke, cryogenic ASUs tsim nitrogen los ntawm 99.5% mus rau 99.999% +, thiab oxygen los ntawm 99.6% mus rau 99.8% + raws li xav tau. Thiab qhov no siab purity tuav ruaj khov txawm tias thaum lub sij hawm molecular sieve hloov, expander load hloov, thiab txhua hnub ambient kub hloov. Rau kev tsim khoom tas mus li, purity drift txhais tau hais tias tsis paub txog kev tawm tsam - qee yam txheej txheem engineers ntshai tshaj plaws.
2. Cov khoom tsis muaj kev cuam tshuam tiag tiag
Cryogenic ASUs muaj cov kua dej ntau hauv lub thawv txias. Nyob rau hauv ib txwm ua haujlwm, cov kua oxygen thiab nitrogen tau khaws cia hauv lub ntsiab condenser tsim ib qho tsis zoo. Yog hais tias cov cua compressors luv luv hloov pauv lossis hloov pauv molecular sieve ua rau muaj kev hloov pauv me me, cov khoom lag luam tawm yuav luag tsis cuam tshuam - tsuav yog cov xwm txheej hauv kab ntawv tseem nyob tsis zoo. Zoo-tsim ASUs loj nrog cov kua dej thaub qab tuaj yeem cia li vaporize khaws cia thaum muaj kev ntxhov siab, muab cov neeg ua haujlwm kaum feeb mus rau ob peb teev rau cov lus teb. Qhov kev ntseeg siab ntawd yog lub hauv paus ntawm kev tswj xyuas kev tsim khoom tas mus li.
3. Kev lag luam zoo dua ntawm cov nplai loj
Ib leeg - tsheb ciav hlau ASU muaj peev xwm ntawm ntau txhiab mus rau ntau dua 100,000 Nm³ / teev. Cov nplai loj dua txhais tau hais tias kev siv hluav taws xob tsawg dua ib chav tsev khoom. Cov nroj tsuag loj txuas ntxiv ua ke nrog cov khoom loj cryogenic ASUs siv tag nrho peb cov khoom - oxygen rau gasifiers lossis oxidation cov tshuaj tiv thaiv, nitrogen rau kev sib khi, purging, thiab tub yees, thiab argon ua cov khoom muag los yog cov roj tiv thaiv. Cov qauv ntau- cov khoom lag luam no ua rau tag nrho tus nqi qis dua lwm txoj hauv kev zoo li "yooj yim dua".
Vim li cas lwm yam thev naus laus zis tsis tuaj yeem hloov Cryogenic ASUs
Qee tus nug: PSA thiab kev sib cais ntawm daim nyias nyias tau txhim kho - vim li cas ho tsis siv lawv ua cov khoom tseem ceeb rau cov txheej txheem tas mus li?
Nws tsis yog hais txog qhov zoo lossis qhov phem - nws yog hais txog kev haum. PSA oxygen purity tsis tshua muaj siab tshaj 93%, thiab txhua ob peb feeb lub voj voog sib npaug, depressurizes, thiab pururges, ua rau lub sij hawm ntws thiab siab viav vias. Cov txheej txheem txuas ntxiv reactors yog tsim los rau cov khoom noj tsis tu ncua. Periodic viav vias txhais tau hais tias yog cov cuab yeej siv ntau dhau los nqus cov viav vias lossis hloov kho cov dej tsis tu ncua. Ib qho ntxiv cov nqi peev, lwm qhov ntxiv kev ua haujlwm mob taub hau - tsis zoo tagnrho.
Kev sib cais membrane haum rau qis -purity, me- nplai siv - zoo li aeration hauv cov dej khib nyiab me me lossis oxygenation hauv aquaculture. Rau loj nruam ntau lawm, membrane hloov zaus thiab nqi ua unbearable.
Raws li kev cia siab ib leeg ntawm cov kua tank vaporization - thauj cov kua oxygen / nitrogen los ntawm ASU cog rau qhov chaw - txhua hnub noj ntau pua lossis ntau txhiab tons txhais tau tias cov tsheb thauj khoom nquag, thauj khoom / tshem tawm kev nyab xeeb, thiab huab cua- cuam tshuam txog kev xa khoom. Tsis muaj tus thawj tswj xyuas cov nroj tsuag tsis tu ncua xav bet ntev - lub sij hawm ntawm "ntau ntau lub tsheb thauj khoom muaj tshuaj lom neeg tuaj txog raws sijhawm txhua hnub."
Tiag -Kev txiav txim siab hauv ntiaj teb Engineering
Txhua tus neeg uas tau ua tiav kev xaiv rau cov haujlwm txuas ntxiv paub: xaiv lub cryogenic ASU tsis yog tsuas yog yuav cov cuab yeej - nws tau rov xav txog tag nrho cov khoom siv hluav taws xob.
Qhov twg muab ASU? Interfacing nrog cog cov yeeb nkab racks, kev nyab xeeb deb ntawm cov nplaim taws, kev sib koom ua ke ntawm cov tsev loj compressor thiab lub hauv paus ntawm lub thawv txias. Lub qhov cub rau molecular sieve regeneration nyob qhov twg los ntawm - qis-sab siab network lossis lub tshuab hluav taws xob tshwj xeeb? Qhov ntawd yuav tsum muaj cov ncauj lus kom ntxaws cog qhov sib npaug. Turbo-expander txias rov qab ncaj qha cuam tshuam rau cov kua ntau lawm, uas txiav txim siab ntev npaum li cas cov txheej txheem thaub qab yuav kav ntev.
Tom qab cov ntsiab lus no yog ib qho tseeb: lub cryogenic ASU tsis yog lub tshuab ib leeg - nws yog ib qho khoom nruab nrog hauv lub neej ntawm kev tsim khoom tas mus li. Nws tsim, kev ua haujlwm, thiab kev saib xyuas yuav tsum sib sib zog nqus nrog rau tag nrho cov txheej txheem tsim khoom.
Kev lag luam tsis tu ncua nyob ntawm cryogenic ASUs tsis yog vim tias cov thev naus laus zis tsis meej, tab sis vim tias nws ib txhij xa cov nplai loj, siab purity, siab ntseeg siab, thiab kev lag luam zoo - plaub qhov kev xav tau uas yog tag nrho indispensable nyob rau hauv tas mus li ntau lawm. Lwm yam thev naus laus zis yuav npog ob lossis peb, tab sis tsis tshua muaj plaub.
