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Cov pa oxygen ua kua yog cov kua xiav dawb ntawm qhov kub qis, nrog rau qhov ceev siab thiab qhov kub qis heev. Lub ntsiab lus kub ntawm cov pa oxygen ua kua yog -183 ℃, uas ua rau nws ruaj khov hauv qhov chaw kub qis piv rau cov pa oxygen uas muaj roj. Hauv daim ntawv kua, qhov ceev ntawm cov pa oxygen yog kwv yees li 1.14 g / cm³, ua rau cov pa oxygen ua kua yooj yim khaws cia thiab thauj dua li cov pa oxygen uas muaj roj. Cov pa oxygen ua kua tsis yog tsuas yog muaj cov pa oxygen siab xwb tab sis kuj muaj cov khoom oxidizing muaj zog, muaj peev xwm ua rau muaj kev cuam tshuam sai nrog ntau yam khoom organic.

Qhov kub qis ntawm cov pa oxygen xav tau cov khoom siv tshwj xeeb thiab kev ntsuas thaum lub sijhawm khaws cia thiab thauj mus los, xws li siv cov thawv uas muaj qhov kub qis kom tiv thaiv kev hloov pauv cua sov. Nws tsis muaj ntxhiab thiab tsis muaj xim, tab sis vim nws qhov kub qis heev, cov pa oxygen yuav ua rau mob frostbite thiab lwm yam kev phom sij rau tib neeg lub cev, yog li ntawd yuav tsum tau ceev faj tshwj xeeb thaum lub sijhawm ua haujlwm.

Cov txheej txheem tsim khoom thiab kev tsim khoom ntawm cov pa oxygen kua

Feem ntau, kev tsim cov pa oxygen ua kua siv cov thev naus laus zis sib cais cua sib sib zog nqus, uas yog ib txoj kev sib cais cov khoom ntawm huab cua los ntawm kev txias qis thiab kev nias kom zoo. Lub hauv paus ntsiab lus ntawm kev sib cais cua sib sib zog nqus yog sib cais ntau yam khoom ntawm huab cua raws li lawv cov ntsiab lus kub sib txawv. Ua ntej, huab cua raug nias, tom qab ntawd los ntawm ntau theem ntawm kev nthuav dav thiab txias, huab cua maj mam mus txog qhov kub qis heev, thiab thaum kawg oxygen raug sib cais ntawm huab cua thiab ua kua. Kev tsim cov pa oxygen ua kua xav tau cov txheej txheem txias zoo thiab cov khoom siv ntxuav kom ntseeg tau tias cov pa oxygen ua kua huv thiab ruaj khov.

Cov thev naus laus zis sib cais cua tob tob tsis yog tsuas yog tsim cov pa oxygen xwb tab sis kuj tseem tuaj yeem tau txais lwm cov pa roj kub qis xws li cov pa nitrogen thiab cov pa argon. Cov khoom no kuj muaj kev siv dav hauv kev lag luam. Cov yam ntxwv ntawm cov pa oxygen uas huv siab thiab kub qis ua rau nws tseem ceeb hauv ntau daim ntawv thov kev lag luam tshwj xeeb.

Cov teb tseem ceeb ntawm cov pa oxygen

Cov pa oxygen ua kua muaj ntau daim ntawv thov hauv ntau qhov chaw lag luam. Ua ntej, hauv kev lag luam aerospace, cov pa oxygen ua kua yog ib qho ntawm cov tshuaj oxidant uas siv ntau tshaj plaws hauv rocket, vim nws muaj cov pa oxygen ntau thiab muaj peev xwm pab hlawv, uas tuaj yeem ua rau muaj zog sai sai los tsim kom muaj zog ntau los txhawb nqa rocket. Kev sib xyaw ua ke ntawm cov pa oxygen ua kua thiab cov hydrogen ua kua yog hu ua ib qho ntawm cov tshuaj propellant uas siv ntau tshaj plaws, thiab nws lub zog muaj zog thiab kev ua tau zoo heev ua rau nws nyiam heev hauv kev siv tshuab aerospace.

Qhov thib ob, hauv kev kho mob, cov pa oxygen yog siv ua qhov chaw tseem ceeb ntawm cov pa oxygen. Cov pa oxygen yog khaws cia rau qhov kub qis thiab ua pa rau kev siv ua cov pa oxygen kho mob, pab cov neeg mob uas muaj teeb meem ua pa tau txais cov pa oxygen txaus. Tsis tas li ntawd, cov pa oxygen ua lub luag haujlwm tseem ceeb hauv metallurgy, chemical engineering, thiab lwm yam teb, tshwj xeeb tshaj yog hauv kev kub hnyiab thiab cov txheej txheem tsim tshuaj lom neeg, qhov twg nws lub peev xwm oxidizing muaj zog tau siv dav.

Kev ceev faj txog kev nyab xeeb rau cov pa oxygen ua kua

Txawm hais tias cov pa oxygen ua kua muaj ntau yam kev siv, vim nws muaj zog ua haujlwm thiab kub tsawg, muaj qee yam kev phom sij rau kev nyab xeeb. Ua ntej, cov pa oxygen ua kua yog cov tshuaj oxidant muaj zog, uas tuaj yeem ua kom cov txheej txheem hlawv sai dua, yog li nws yuav tsum zam kom tsis txhob kov cov khoom uas yooj yim hlawv thaum khaws cia thiab siv. Tib lub sijhawm, qhov kub qis heev ntawm cov pa oxygen ua kua yuav ua rau mob frostbite, yog li cov khoom siv tiv thaiv zoo xws li cov hnab looj tes tiv taus txias thiab lub ntsej muag yuav tsum hnav thaum ua haujlwm nrog cov pa oxygen ua kua kom tsis txhob raug mob ntawm daim tawv nqaij thiab qhov muag.

Kev khaws cia cov pa oxygen ua kua yuav tsum muaj cov thawv tshwj xeeb uas tsis kub heev, feem ntau muaj cov khoom rwb thaiv tsev zoo kom tiv thaiv tau cua sov sab nraud nkag los thiab ua rau qhov kub ntawm cov pa oxygen ua kua nce siab. Tsis tas li ntawd xwb, thaum lub sijhawm ua pa ntawm cov pa oxygen ua kua, nws yuav nthuav dav sai sai thiab tsim cov pa oxygen ntau heev, uas yuav ua rau muaj cov pa oxygen ntau ntxiv hauv ib puag ncig, ua rau muaj kev pheej hmoo ntawm hluav taws. Yog li ntawd, thaum lub sijhawm khaws cia thiab thauj cov pa oxygen ua kua, yuav tsum ua raws li cov cai kev nyab xeeb kom ntseeg tau tias muaj ib puag ncig ua haujlwm zoo thiab muaj cua nkag tau zoo.

Kev sib piv ntawm cov pa oxygen nrog lwm cov pa roj hauv kev lag luam

Cov pa oxygen ua kua, zoo li cov pa nitrogen ua kua thiab cov pa argon ua kua, muaj qee yam zoo sib xws, tab sis muaj qhov sib txawv ntawm kev siv thiab cov yam ntxwv. Lub ntsiab lus kub ntawm cov pa nitrogen ua kua yog -196 ℃, uas qis dua li cov pa oxygen ua kua, yog li cov pa nitrogen ua kua feem ntau siv ua cov dej txias, thaum cov pa oxygen ua kua, vim nws cov khoom oxidizing muaj zog, feem ntau siv ua cov khoom pab hlawv lossis oxidant. Ntxiv mus, cov pa argon ua cov roj inert, tsis yooj yim cuam tshuam nrog lwm yam tshuaj thaum lub sijhawm tshuaj lom neeg thiab feem ntau yog siv rau kev tiv thaiv huab cua. Thaum cov pa oxygen ua kua, vim nws cov tshuaj tiv thaiv siab, feem ntau siv rau hauv cov txheej txheem tshuaj lom neeg thiab kev hlawv.

Ntawm cov pa roj hauv kev lag luam no, cov pa oxygen ua kua yog qhov tshwj xeeb vim nws cov khoom siv oxidizing muaj zog, tshwj xeeb tshaj yog nyob rau hauv cov xwm txheej uas xav tau kev sib xyaw ua ke zoo thiab kev sib xyaw ua ke hnyav. Cov yam ntxwv ntawm cov pa roj hauv kev lag luam sib txawv ua rau lawv ua lub luag haujlwm tseem ceeb hauv lawv cov teb siv.

Kev phooj ywg ib puag ncig thiab kev ruaj khov ntawm cov pa oxygen kua

Txawm hais tias cov pa oxygen ua kua, ua ib qho roj siv hauv kev lag luam, muaj kev ua haujlwm siab heev thaum siv, nws tsis ua rau muaj kuab paug rau ib puag ncig. Cov pa oxygen, ua ib feem tseem ceeb ntawm huab cua, nws cov khoom kawg hauv cov txheej txheem tshuaj tiv thaiv feem ntau yog cov tshuaj tsis muaj teeb meem xws li dej lossis carbon dioxide. Txawm li cas los xij, cov txheej txheem tsim cov pa oxygen ua kua xav tau lub zog ntau, tshwj xeeb tshaj yog hauv cov txheej txheem sib cais txias tob, yog li kev txhim kho kev siv hluav taws xob ntawm kev tsim cov pa oxygen ua kua yog qhov tseem ceeb heev rau kev tiv thaiv ib puag ncig.

Los ntawm kev siv cov khoom siv ua haujlwm tau zoo dua thiab txhim kho cov txheej txheem ua haujlwm, nws muaj peev xwm txo qhov kev siv hluav taws xob thaum txo qhov cuam tshuam rau ib puag ncig ntawm kev tsim cov pa oxygen. Nrog rau kev txhim kho cov thev naus laus zis ntsuab, kev tsim cov pa oxygen yuav tsum tau ua kom zoo rau ib puag ncig thiab ruaj khov dua yav tom ntej, muab cov pa oxygen huv dua rau kev tsim khoom lag luam thiab tib neeg lub neej. Xaus Lus

Cov pa oxygen ua kua, ua ib hom pa oxygen ua kua, tau siv dav hauv kev lag luam, kev tsav dav hlau, thiab kev kho mob vim nws cov yam ntxwv tshwj xeeb thiab muaj zog oxidizing. Txawm hais tias kev tsim thiab siv cov pa oxygen ua kua xav tau kev ntsuas kev nyab xeeb nruj, nws lub luag haujlwm tseem ceeb hauv ntau qhov chaw tsis tuaj yeem hloov pauv tau. Yav tom ntej, nrog rau kev nce qib ntawm thev naus laus zis, kev tsim thiab kev siv cov pa oxygen ua kua yuav ua tau zoo dua thiab zoo rau ib puag ncig, yog li ua tau raws li qhov xav tau ntawm lub zej zog.

Peb yog cov chaw tsim khoom thiab xa tawm ntawm chav cais cua. Yog tias koj xav paub ntau ntxiv txog peb:

Tus neeg tiv tauj: Anna

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Email :anna.chou@hznuzhuo.com