Kua nitrogen

Kua nitrogen yog inert, tsis muaj kob thiab ntxhiab pa. Nws yog uas tsis yog-corrosive, uas tsis yog-flammable. Qhov no gas yuav muab ib tug loj ib feem ntawm cov cua (78.03% ntawm tag nrho cov). Txawm tias cov kua nitrogen thiab yuav tsis txhawb combustion, tiam sis nws yog inert, tsuas yog rau cov neeg mob qhov twg nws yog rhuab mus heev kub, uas txuas nrog rau ib co ntawm cov feem ntau active co xws li lithium, magnesium. Li ntawd, cov compound nitrides raug tsim. Nws tseem yuav hnov mob nrog rau oxygen, uas ua nyob rau hauv tsim ntawm nitrogen oxides thiab nitrogen ua ke nrog hydrogen nyob rau hauv lub xub ntiag ntawm catalysts - ammonia.

Kev npaj ntawm kua nitrogen nyob rau hauv industrial tej yam kev mob
Nitrogen kua thiab ib cov roj npaj tib txoj kev - los ntawm lub ambient cua. Nyob rau hauv lub chaw soj nstuam nws yog tau thaum lub sij hawm decomposition cov tshuaj tiv thaiv ntawm ammonium nitrite. Qhov no cov tshuaj tiv thaiv yog exothermic. Yog vim li cas nws mus nrog qhov kev tso tawm ntawm 80 kcal (335 kJ) ntawm lub zog. Nws yuav tsum tau txias txog ntsha thaum cua kub yog yuav tsum tau pib cov tshuaj tiv thaiv yuav tsim kua nitrogen. Tsis tas li ntawd, molecular nitrogen nyob rau hauv kev lag luam yog tau los ntawm fractional distillation ntawm cov kua cua cua. Nws muaj peev xwm muab tau los ntawm cov qauv no raws li "atmospheric nitrogen." Tag nrho txoj kev los ntawm kev uas mus nrhiav cov kua nitrogen qhia rau ib tug muaj kev ruaj ntseg thiab huv si khoom rau industrial, kev kho mob thiab tsev neeg cov khoom
Impact on tib neeg noj qab haus huv
Txawm tias cov kua nitrogen yog inert thiab tsis yog tshuaj lom, nws yuav ntxias ib tug tib neeg txhawm chim, raws li nws muaj peev xwm tshem cov pa nyob rau hauv cov huab cua hauv qab no lub theem tau los txhawb nqa lub neej. Nqus tau pa nitrogen nyob rau hauv ntev li ntawm nqi yuav ua rau kiv taub hau, xeev siab, ntuav, tsis nco qab thiab tuag. Tuag tej zaum yuav tshwm sim ntawm tsis orientation thiab nco ntsoov, uas yuav tiv thaiv tau nws tus kheej-cawm los ntawm tej chaw. Thaum uas tsis muaj oxygen concentration, tsis nco qab thiab tuag zaum yuav tshwm sim nyob rau hauv ib tug teeb meem ntawm vib nas this. Cov neeg ua, xws li cawm neeg ua hauj lwm, yuav tsum tsis txhob nkag mus rau thaj chaw tsis muaj self-muaj ua tsis taus pa apparatus los yog qhov ncauj, yog hais tias tus oxygen concentration hauv qab no 19,5%.
Yog hais tias ua kua nitrogen, ces nws muab cia rau hauv tshwj xeeb ntim. Qhov no yog tsim nyog nyob rau hauv thiaj li yuav tiv thaiv lwm tus neeg los ntawm lub txim ntawm cov kev sis raug zoo nrog lub caij. Kua nitrogen yog muab nyob rau hauv ib tug ceev ntawm mus txog 350 MPa nyob rau hauv lub thawv ntim ntawm los ntawm 80 mus 450 liters.

Kua nitrogen - cia thiab siv
Khaws thiab siv cov khoom no koj yuav tsum tau tsuas nyob rau hauv cov chav nrog zoo qhov cua. Nws kiag li tsis tau muab cia rau hauv ib tug uas xa tuaj nrog qhov chaw. Kev npaj ntawm kua nitrogen nyob rau hauv lub laboratory thiab yuav tsum tau tshwj xeeb kev rau nws cia nyob rau hauv ntim. Cryogenic ntim yog nruab nrog tshwj xeeb pab kiag li lawm rau siab nyem thiab kev tswj ntawm hauv siab. Nyob rau hauv tej yam kev mob, lawv muaj kev ruaj ntseg. Nyob rau hauv tsis muaj cov ntaub ntawv yuav muaj xws li, rho tawm los yog koom nyob rau hauv lwm yam kev sis raug zoo nrog lub siab nyem ntaus ntawv. Nws yog tsis yooj yim sua hais tias cov kua nitrogen yog teeb meem rau kev tiv thaiv qhov chaw ntawm lub cev.
Ntim rau hauv uas lub muab kua nitrogen yuav tsum tau siv thiab muab cia rau hauv ib tug upright txoj hauj lwm. Tsis txhob pov tseg ntawm lub ntim, los yog cia lawv nyob rau lawv sab. Koj kuj tsis tau nws tus kheej pov tseg ntawm vials muaj cov tshuaj yeeb dej caw. Yog hais tias koj muaj tej teeb meem nyob rau hauv kev siv ntawm lub thawv los yog lub valve, ces tsis txhob siv nws tam sim ntawd.

Tej kev tiv thaiv cov khoom (PPE)
Koj yuav tsum tau twv yuav raug hu nyeem rau kev ruaj ntseg nrog rau lub thaj chaw ntawm kua nitrogen ua ntej yuav siv. Nws yog tsim nyog los tiv thaiv lub qhov muag thiab lub feem ntau rhiab ib feem ntawm lub cev los ntawm cov vapors ntawm lub cryogenic kua. Kev npaj ntawm kua nitrogen nyob rau hauv vitro thiab nws siv presupposes PPE. Yuav tsum muaj: ib tug lub ntsej muag ntaub thaiv npog los yog yas, xoob tawv hnab looj tes, ntev tes tsho lub tsho thiab ris tsis muaj ris, yuav tsum tau muaj kev ruaj ntseg khau, tshwj xeeb tshaj yog rau cov neeg uas tsim lub thawv tuav. Ua pa system yuav tsum tau muaj kev tiv thaiv tshwj xeeb qhov ncauj qhov ntswg.