Liquid nitrogen

liquid nitrogen kuyinto inert, kungekho nto enemibala emihle futhi ayinaphunga igesi. He is ze-non-ezonakalisayo, okungezona oluvuthayo. Lokhu igesi kuyingxenye enkulu emkhathini (78.03% wenani). Nakuba liquid nitrogen futhi ngeke ukusekela amandla omlilo, Nokho kuba inert except for labo izimo lapho eliwu okushisa aphezulu kakhulu, okuyinto ixhunywe ezinye izinsimbi ezimatasa ezifana lithium, magnesium. Ngenxa yalokho, i-nitrides kwakwakhe akhiwa. Ingase futhi basabela umoya-mpilo, okuholela kwetinhlavu nitrogen oxides nitrogen kuhlangene hydrogen khona catalysts - ammonia.

Ulungiselela liquid nitrogen ezimweni zezimboni
Liquid nitrogen gas wacaba indlela esifanayo - kusukela emoyeni kuma. Laboratories it is etholwe ngesikhathi noqhekeko ukusabela ammonium nitrite. Cishe le ndlela yokusabela exothermic. Yingakho-ke uya lapho kukhululwa 80 kcal (335 kJ) wamandla. Budinga ukupholisa isitsha ngenkathi Ukushisa liyadingeka ukuqalisa ukusabela ukukhiqiza liquid nitrogen. Futhi, i-nitrogen yamangqamuzana umkhakha etholakala ngokuzikhandla ziphuzo zazihluzwa wamaqhuzu okusamanzi emoyeni emkhathini. It ingatholakala ngale ndlela ngokuthi "i-nitrogen esemkhathini." Zonke izindlela lapho ukufuna liquid nitrogen iqondiswe umkhiqizo ephephile futhi zihlanzekile imikhiqizo ezimbonini, wezokwelapha nendlu
Umthelela empilweni yomuntu
Nakuba liquid nitrogen kuyinto inert futhi akuyona anobuthi, kungaba liyochukuluza ukufuthelana womuntu, njengoba kungaba azixoshe oksijini emoyeni ngezansi ezingeni adingekayo ukuze asekele ukuphila. Inhalation nitrogen e imali ngokweqile kungabangela isiyezi, isicanucanu, ukuhlanza, nokulahlekelwa ukwazi nokufa. Abantu bangase babulawe kube umphumela ukulahlekelwa ukujayeza ukwazi, okuyinto kungavimbela ukuzitakula evela ezindaweni kungangcoli. Ngezinye ongaphakeme-mpilo okuhlushwa, nokulahlekelwa ukwazi nokufa kungenzeka indaba ngemizuzwana. Abasebenzi, kuhlanganise nezisebenzi zokutakula, akufanele bangene emagcekeni ngaphandle self-equkethwe ukuphefumula izinto ezisetshenziswayo noma ngomshini, uma lokuhlushwa i-oksijini ngezansi 19.5%.
Uma liquid nitrogen ke lilondolozwe iziqukathi ekhethekile. Lokhu kuyadingeka ukuze kuvikelwe abanye emiphumeleni nokuxhumana element. liquid nitrogen lilondolozwe kwengcindezi afika ku-350 MPA umthamo isitsha esuka 80 450 amalitha.

Liquid nitrogen - Isilondolozi kanye nokusetshenziswa
Gcina bese usebenzisa lo mkhiqizo kudingeka kuphela amakamelo ne komoya okuhle kuwe. It ngokuphelele akakwazi kwi isikhala afakiwe. Ulungiselela liquid nitrogen endaweni yokucwaninga futhi kudinga izindlela ezikhethekile yokugcina yayo izigubhu. iziqukathi Cryogenic anemisila imishini ekhethekile esetshenziswa impumuzo ingcindezi nokulawula ingcindezi zangaphakathi. Ngaphansi kwezimo ezivamile, aphephile. Akunakusetshenziswa kungafaka, susa noma bahlanganyele kunoma yiluphi Okunye ukuxhumana ngedivayisi impumuzo ingcindezi. Akunakwenzeka ukuthi liquid nitrogen kuyinto kwesigameko izingxenye olungavikelekile zomzimba.
Iziqukathi lapho egcinwe liquid nitrogen okufanele lisetshenziswe futhi agcinwe sesimweni uqotho. Musa bachithe izitsha, noma uwugcine ezinhlangothini zazo. Wena ubuye abakwazi ngokuzimela bachithe izitsha eziyisikhombisa eliqukethe ketshezi. Uma uneminye ubunzima ukusetshenziswa esitsheni noma valve ke uyeke ukusebenzisa ngokushesha.

izembatho zokuzivikela (PPE)
Kufanele nakanjani ukufunda ngoba lokuvikeleka izakhiwo liquid nitrogen ngaphambi kokusetshenziswa. Kuyadingeka ukuba bavikele amehlo futhi ingxenye ezwela kakhulu kunazo zonke zomzimba kusukela evala ketshezi cryogenic. Ulungiselela liquid nitrogen ngaphandle kwesibeletho kanye nokusebenzisa kwayo kusikisela PPE. Kumele kube: isihlangu ubuso noma amagogolo, okuxekethile esinamathelayo lesikhumba amagilavu, eside emikhonweni ihembe ibhulukwe ngaphandle cuffs, futhi kudingeka izicathulo zokuphepha, ikakhulukazi labo abazikhiqizayo esitsheni handling. uhlelo zokuphefumula futhi kufanele avikelwe nge buso ekhethekile.