Ngenkqubela phambili yesayensi kunye nobuchwepheshe kunye nophuhliso loqoqosho, umda wokusetyenziswa kwenitrogen uyanda imihla ngemihla, kwaye uye wangena kumacandelo amaninzi kunye nobomi bemihla ngemihla.
Abavelisi beMveliso yeNitrojeni - iChina iNitrogen Production Factory & Suppliers (xinfatools.com)
I-nitrojeni yeyona nto iphambili yomoya, ibalelwa malunga ne-78% yomoya. I-nitrogen ye-Elemental N2 yigesi engenambala kwaye engenavumba phantsi kweemeko eziqhelekileyo. Uxinaniso lwegesi phantsi komgangatho oqhelekileyo yi-1.25 g/L. Indawo yokunyibilika ngu -210℃ kwaye indawo yokubila yi -196℃. Initrogen yolwelo sisikhenkcisi esinobushushu obuphantsi (-196℃).
Namhlanje siza kwazisa iindlela ezininzi eziphambili zokuvelisa initrogen ekhaya naphesheya.
Kukho iindlela ezintathu zokuvelisa initrogen ngokubanzi kwimizi-mveliso: imveliso yenitrogen yokwahlula umoya we-cryogenic, ujingi woxinzelelo lwe-adsorption yemveliso yenitrogen, kunye ne-membrane yokwahlula imveliso yenitrogen.
Eyokuqala: Indlela yokuvelisa initrogen yokwahlula umoya weCryogenic
Imveliso yenitrogen yomoya yeCryogenic yindlela yokuvelisa initrogen enembali ephantse ibe kumashumi eminyaka. Isebenzisa umoya njengento ekrwada, iwucinezele kwaye iwucokise, emva koko isebenzisa ukutshintshiselana ngobushushu ukunyibilikisa umoya ube ngumoya wolwelo. Umoya olulwelo ubukhulu becala ngumxube weoksijini engamanzi kunye nenitrogen engamanzi. Iindawo zokubilisa ezahlukeneyo zeoksijini elulwelo kunye nenitrogen engamanzi zisetyenziselwa ukuzohlula ngokuxutywa komoya olwelo ukufumana initrogen.
Izinto eziluncedo: ukuveliswa kwegesi enkulu kunye nokucoceka okuphezulu kwe-nitrogen yemveliso. Ukuveliswa kwenitrogen yeCryogenic kunokuvelisa initrogen kuphela kodwa nenitrogen engamanzi, ehlangabezana neemfuno zenkqubo yenitrogen engamanzi kwaye inokugcinwa kumatanki ogcino lwenitrogen. Xa kukho umthwalo nitrogen okwethutyana okanye ukulungiswa encinane izixhobo zokwahlula umoya, ulwelo nitrogen kwitanki yokugcina ingena vaporizer kwaye shushu, kwaye emva koko ithunyelwe kwimveliso nitrogen umbhobho ukuhlangabezana imfuno nitrogen yeyunithi inkqubo. Umjikelo wokusebenza wemveliso ye-cryogenic nitrogen (ebhekisa kwisithuba esiphakathi kokufudumeza okukhulu okubini) ngokuqhelekileyo ingaphezulu konyaka omnye, ngoko ke ukuveliswa kwe-nitrogen ye-cryogenic ngokuqhelekileyo ayithathwa njengento yokulinda.
Ukungalungi: Ukuveliswa kwe-nitrogen ye-Cryogenic kunokuvelisa i-nitrogen ngokucoceka kwe-≧99.999%, kodwa ukucoceka kwe-nitrogen kunqunyelwe ngumthwalo we-nitrogen, inani leetreyi, ukusebenza kakuhle kwe-tray kunye nokucoceka kwe-oksijini emoyeni wamanzi, kwaye uluhlu lohlengahlengiso luncinci kakhulu. Ngoko ke, kwiseti yezixhobo zokuvelisa i-nitrogen ye-cryogenic, ucoceko lwemveliso luqinisekile kwaye alukho lula ukulungelelanisa. Ekubeni indlela ye-cryogenic iqhutyelwa kumaqondo obushushu aphantsi kakhulu, izixhobo kufuneka zibe nenkqubo yokuqalisa ukupholisa kwangaphambili ngaphambi kokuba ifakwe ekusebenzeni okuqhelekileyo. Ixesha lokuqalisa, oko kukuthi, ixesha ukususela ekuqaleni kwe-expander ukuya kwixesha apho ukucoceka kwe-nitrogen kufinyelela kwimfuno, ngokuqhelekileyo akukho ngaphantsi kweeyure ze-12; Ngaphambi kokuba isixhobo singene kulungiso, kufuneka sibe nexesha lokufudumeza kunye nexesha lokunyibilika, ngokubanzi iiyure ezingama-24. Ngoko ke, izixhobo zokuvelisa i-nitrogen ye-cryogenic akufanele ziqaliswe kwaye zimiswe rhoqo, kwaye kuyacetyiswa ukuba zisebenze ngokuqhubekayo ixesha elide.
Ukongezelela, inkqubo ye-cryogenic iyinkimbinkimbi, ithatha indawo enkulu, ineendleko eziphezulu zeziseko ezingundoqo, ifuna imikhosi ekhethekileyo yokugcina, inenani elikhulu labaqhubi, kwaye ivelisa igesi ngokukhawuleza (iiyure ezili-18 ukuya kwii-24). Ilungele imveliso yenitrogen kwimizi-mveliso emikhulu.
Okwesibini: I-Pressure Swing Adsorption (PSA) Indlela yokuvelisa iNitrogen
Itekhnoloji yokwahlula igesi ye-Pressure Swing Adsorption (PSA) licandelo elibalulekileyo letekhnoloji yokwahlula igesi engeyiyo i-cryogenic. Kuyisiphumo semizamo yabantu yexesha elide ukufumana indlela elula yokwahlula umoya kunendlela ye-cryogenic.
Kwiminyaka yoo-1970, iNkampani yaseWest German Essen Mining iphuhlise ngempumelelo i-carbon molecular sieves, ivula indlela yokwenziwa kwemveliso ye-PSA yokwahlula umoya kwimveliso yenitrogen. Kwiminyaka engama-30 edlulileyo, le teknoloji iye yakhula ngokukhawuleza kwaye yakhula. Kuye kwaba ngumkhuphisana oqinileyo wokuhlukana komoya we-cryogenic kwintsimi yemveliso ye-nitrogen encinci kunye nephakathi.
Uxinzelelo lwe-adsorption ye-nitrogen yemveliso isebenzisa umoya njengento ekrwada kunye ne-carbon molecular sieve njenge-adsorbent. Isebenzisa iimpawu ze-carbon molecular sieve's selective adsorption of oxygen and nitrogen in the air, kwaye isebenzisa umgaqo we-pressure swing adsorption (i-adsorption yoxinzelelo, i-desorption yokunciphisa uxinzelelo kunye nokuvuselelwa kwe-molecular sieve) ukwahlula i-oksijini kunye ne-nitrogen kwindawo yokushisa ukuvelisa i-nitrogen.
Xa kuthelekiswa ne-cryogenic air yokwahlula imveliso yenitrogen, uxinzelelo lwe-adsorption imveliso ye-nitrogen ineenzuzo ezibalulekileyo: ukwahlukana kwe-adsorption kuqhutyelwa kwiqondo lokushisa, inkqubo ilula, izixhobo zihlangene, i-footprint incinci, kulula ukuyiqala kwaye uyiyeke, iqala ngokukhawuleza, ukuveliswa kwegesi kuyakhawuleza (ngokubanzi malunga nemizuzu engama-30), ukusetyenziswa kwamandla kuncinci, ixabiso lokusebenza liphantsi, iqondo lokuzenzekelayo liphezulu, ukusebenza kunye nokugcinwa kulungele, ukufakwa kwe-skid kulungile, akukho siseko sikhethekileyo. iyadingeka, imveliso nitrogen ukucoceka inokulungelelaniswa ngaphakathi kuluhlu oluthile, kunye nemveliso nitrogen ≤3000Nm3/h. Ke ngoko, ujingi woxinzelelo lwe-adsorption imveliso yenitrogen ifaneleka ngakumbi ekusebenzeni kwamathuba.
Nangona kunjalo, ukuza kuthi ga ngoku, abalingane basekhaya nakwamanye amazwe banokuvelisa i-nitrogen kuphela ngococeko lwe-99.9% (oko kukuthi, i-O2≤0.1%) usebenzisa i-PSA iteknoloji yokuvelisa i-nitrogen. Ezinye iinkampani zinokuvelisa i-99.99% ye-nitrogen ecocekileyo (O2≤0.01%). Ubunyulu obuphezulu bunokwenzeka ngokwembono ye-PSA ye-nitrogen yokuvelisa iteknoloji, kodwa ixabiso lemveliso liphezulu kakhulu kwaye abasebenzisi abanakukwazi ukuyamkela. Ngoko ke, ukusetyenziswa kweteknoloji ye-PSA ye-nitrogen yokuvelisa ukuvelisa i-nitrogen ephezulu kufuneka yongeze isixhobo sokucoca emva kwesigaba.
Indlela yokucoca initrogen (isikali soshishino)
(1) Indlela ye-Hydrogenation deoxygenation.
Ngaphantsi kwesenzo se-catalyst, i-oksijini eseleyo kwi-nitrogen iphendula kunye ne-hydrogen eyongeziweyo ukuvelisa amanzi, kwaye i-reaction formula yile: 2H2 + O2 = 2H2O. Emva koko, amanzi asuswa yi-high-pressure nitrogen compressor booster, kunye ne-nitrogen ephezulu ecocekileyo kunye namacandelo alandelayo alandelayo afunyenwe ngokumisa emva kokumisa: N2≥99.999%, O2≤5 × 10-6, H2≤1500 × 10-6, H2O≤10.7×10-6. Iindleko zokuvelisa i-nitrogen malunga ne-0.5 yuan / m3.
(2) Indlela ye-Hydrogenation kunye ne-deoxygenation.
Le ndlela ihlulwe ibe ngamanqanaba amathathu: isigaba sokuqala yi-hydrogenation kunye ne-deoxygenation, isigaba sesibini yi-dehydrogenation, kwaye isigaba sesithathu kukususwa kwamanzi. I-nitrogen ephezulu ecocekileyo kunye nokubunjwa okulandelayo kufunyenwe: N2 ≥ 99.999%, O2 ≤ 5 × 10-6, H2 ≤ 5 × 10-6, H2O ≤ 10.7 × 10-6. Iindleko zokuvelisa initrogen malunga ne-0.6 yuan/m3.
(3) Indlela yeCarbon deoxygenation.
Ngaphantsi kwesenzo se-catalyst exhaswa yi-carbon (kwiqondo lokushisa elithile), i-oksijini eseleyo kwi-nitrogen eqhelekileyo isabela kunye nekhabhoni ebonelelwe yi-catalyst ngokwayo ukuvelisa i-CO2. Ifomula yokusabela: C + O2 = CO2. Emva kwesigaba esilandelayo sokususa i-CO2 kunye ne-H2O, i-nitrogen ephezulu ecocekileyo kunye nokwakheka okulandelayo ifunyenwe: N2 ≥ 99.999%, O2 ≤ 5 × 10-6, CO2 ≤ 5 × 10-6, H2O ≤ 10.7 × 10-6. Iindleko zokuvelisa initrogen malunga ne-0.6 yuan/m3.
Okwesithathu: Ukwahlulwa kwe-membrane kunye nokwahlula umoya ukuveliswa kwenitrogen
Ukwahlulwa kweMembrane kunye nokwahlula umoya imveliso yenitrogen ikwalisebe elitsha leteknoloji yokuvelisa initrogen engekho cryogenic. Yindlela entsha yokuvelisa initrogen eyaphuhliswa ngokukhawuleza kumazwe aphesheya ngeminyaka yoo-1980. Iye yakhuthazwa kwaye yasetyenziswa e-China kwiminyaka yakutshanje.
Ukwahlulwa kweMembrane Ukuveliswa kwenitrogen kusebenzisa umoya njengemathiriyeli ekrwada. Phantsi koxinzelelo oluthile, isebenzisa amazinga ahlukeneyo okungena kweoksijini kunye nenitrogen kwinwebu yefiber engenanto ukwahlula ioksijini kunye nenitrogen ukuvelisa initrogen. Xa kuthelekiswa nezi ndlela zimbini zokuvelisa initrogen, ineempawu zesakhiwo sesixhobo esilula, umthamo omncinci, akukho valve yokutshintshela, ukusebenza okulula kunye nokugcinwa, ukuveliswa kwegesi ngokukhawuleza (ngaphakathi kwemizuzu emi-3), kunye nokwandiswa kwamandla afanelekileyo.
Nangona kunjalo, ii-fiber membranes zineemfuno ezingqongqo kucoceko lomoya oxinanisiweyo. Iimbumba ziyakwazi ukuguga kunye nokungaphumeleli, kwaye kunzima ukulungisa. Iinwebu ezintsha kufuneka zitshintshwe.
Ukwahlula i-membrane imveliso ye-nitrogen ifaneleka ngakumbi kubasebenzisi abancinci nabaphakathi kunye neemfuno zokucoceka kwe-nitrogen ye-≤98%, kwaye inomlinganiselo ongcono kakhulu wexabiso lomsebenzi ngeli xesha; xa ubunyulu nitrogen kufuneka ibe phezulu ngaphezu 98%, imalunga 30% ngaphezulu kunoxinzelelo swing adsorption isixhobo nitrogen imveliso yolucaciso olufanayo. Ngoko ke, xa i-nitrogen ephezulu ecocekileyo iveliswa ngokudibanisa i-membrane yokwahlula imveliso ye-nitrogen kunye nezixhobo zokuhlanjululwa kwe-nitrogen, ukucoceka kwe-nitrogen ngokubanzi ngama-98%, okuya kwandisa iindleko zemveliso kunye neendleko zokusebenza kwesixhobo sokucoca.
Ixesha lokuposa: Jul-24-2024
