Yintoni imveliso ye-nitrogen yokwahlula umoya we-cryogenic

Imveliso yenitrogen yomoya yeCryogenic yindlela yokuvelisa initrogen enembali yamashumi 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. Ngokusebenzisa iindawo zokubilisa ezahlukeneyo zeoksijini elulwelo kunye nenitrogen engamanzi, initrogen ifunyanwa ngokuzahlula ngokusebenzisa idistillation yolwelo lomoya.

Ukuhamba kwenkqubo eqhelekileyo

Yonke le nkqubo ibandakanya ukunyanzeliswa komoya kunye nokucocwa, ukwahlula komoya, kunye ne-nitrogen vaporization yolwelo.

1. Uxinzelelo lomoya kunye nokucoca

Emva kokuba umoya ucociwe ngothuli kunye nokungcola komatshini ngesihluzo somoya, singena kwi-compressor yomoya, ixinzelelwe kuxinzelelo olufunekayo, emva koko ithunyelwe kwi-cooler yokunciphisa ubushushu bomoya. Emva koko ingena kwi-air drying purifier ukususa ukufuma, i-carbon dioxide, i-acetylene kunye nezinye ii-hydrocarbons emoyeni.

2. Ukwahlukana komoya

Umoya ocociweyo ungena kwi-heat exchanger engundoqo kwinqaba yokwahlukana komoya, upholile kwiqondo lokushisa lokuhluthwa yigesi ye-reflux (imveliso ye-nitrogen, i-gas yenkunkuma), kwaye ithunyelwa ezantsi kwinqaba yokuchithwa kwe-distillation. I-nitrojeni ifunyenwe phezulu kwinqaba, kwaye umoya we-liquid uhlanjululwe kwaye uthunyelwe Ungena kwi-evaporator ye-condensation ukuba ibe ngumphunga, kwaye ngelo xesha, inxalenye ye-nitrogen ethunyelwe kwi-tower yokulungisa iyancipha. Inxalenye ye-nitrogen engamanzi ejiyileyo isetyenziswa njengolwelo lwe-reflux kwinqaba yokulungiswa, kwaye enye inxalenye isetyenziswa njengemveliso yenitrogen engamanzi kwaye ishiya inqaba yokwahlula umoya.

Irhasi yokukhupha ephuma kwi-evaporator ye-condensation iphinda ifudumale malunga ne-130K ngotshintshiselwano oluphambili lobushushu kwaye ingena kwi-expander yokwandiswa kunye nefriji ukubonelela amandla okupholisa kwinqaba yokwahlula umoya. Inxalenye yegesi eyandisiweyo isetyenziselwa ukuhlaziywa kunye nokupholisa i-molecular sieve, kwaye ikhutshwe nge-silencer. umoya.

3. Ulwelo lwenitrogen yokwenziwa ngumphunga

Initrogen engamanzi ukusuka kwinqaba yokwahlula umoya igcinwa kwitanki yokugcina initrogen engamanzi. Xa isixhobo sokwahlula umoya sihlolwa, initrogen engamanzi kwitanki yokugcina ingena kwi-vaporizer kwaye ifudunyezwe phambi kokuba ithunyelwe kwimveliso yombhobho wenitrogen.

Imveliso ye-nitrogen ye-Cryogenic inokuvelisa i-nitrogen ngococeko lwe-≧99.999%.

ubunyulu

Imveliso ye-nitrogen ye-Cryogenic inokuvelisa i-nitrogen ngococeko lwe-≧99.999%. Ubunyulu be-nitrogen bukhawulelwe ngumthwalo we-nitrogen, inani leetreyi, ukusebenza kakuhle kwe-tray kunye nokucoceka kwe-oxygen emoyeni omanzi, njl., kwaye uluhlu lohlengahlengiso luncinci.

Ngoko ke, kwiseti yezixhobo zokuvelisa i-nitrogen ye-cryogenic, ucoceko lwemveliso luqinisekile kwaye alukho lula ukulungelelanisa.

Izixhobo eziphambili ezibandakanyiweyo kwisixhobo sejenereyitha ye-nitrogen ye-cryogenic

1. Ukucoca umoya

Ukuze kuncitshiswe ukunxitywa kwendawo eshukumayo yomatshini ngaphakathi kwe-compressor yomoya kwaye uqinisekise umgangatho womoya, ngaphambi kokuba umoya ungene kwi-compressor yomoya, kufuneka uqale udlule kwisihluzo somoya ukususa uthuli kunye nezinye izinto ezingcolileyo ezikuyo. Ukuthatha umoya kweecompressors zomoya ubukhulu becala kusebenzisa izihluzi ezirhabaxa okanye izihluzi ezisebenza ngokufanelekileyo.

2. Icompressor yomoya

Ngokomgaqo wokusebenza, i-compressors yomoya inokwahlulwa ibe ngamacandelo amabini: i-volumetric kunye nesantya. Iicompressor zomoya ubukhulu becala zisebenzisa iicompressor zomoya zepiston, iicompressor zomoya ezisentrifugal kunye nezikrufu zomoya.

3. Umoya opholileyo

Isetyenziselwa ukunciphisa ubushushu bomoya ocinezelekileyo ngaphambi kokungena kwi-air drying purifier kunye nenqaba yokwahlula umoya, ukuphepha ukuguquguquka okukhulu kwiqondo lokushisa elingena kwinqaba, kwaye kunokunyusa ubuninzi bomswakama emoyeni oxinzelelweyo. Izipholisi zamanzi e-nitrojeni (ezenziwe ngeenqaba zokupholisa zamanzi kunye neenqaba zokupholisa umoya: inqaba yokupholisa amanzi isebenzisa irhasi emdaka evela kwinqaba yokwahlula komoya ukupholisa amanzi ajikelezayo, kwaye inqaba yokupholisa umoya isebenzisa amanzi ajikelezayo asuka kwinqaba yokupholisa amanzi ukupholisa amanzi. umoya), iFreon air cooler .

4. Isomisi somoya kunye nesicoci

Umoya ocinezelweyo usenomlinganiselo othile wokufuma, ikharbon diokside, iacetylene kunye nezinye iihydrocarbons emva kokudlula kwisipholile somoya. Ukufuma okukhenkcezisiweyo kunye nekharbon diokside efakwe kwinqaba yokwahlula umoya kuya kuthintela imisele, imibhobho kunye neevalvu. Iacetylene iqokelelana kulwelo oksijini kwaye kukho umngcipheko wogqabhuko-dubulo. Uthuli luya kuguga oomatshini abasebenzayo. Ukuze kuqinisekiswe ukusebenza okukhuselekileyo kwexesha elide leyunithi yokwahlula umoya, izixhobo ezikhethekileyo zokucoca kufuneka zisekwe ukuze zisuse ezi zinto zingcolileyo. Iindlela eziqhelekileyo zokuhlanjululwa komoya zi-adsorption kunye neqhwa. Indlela ye-molecular sieve adsorption isetyenziswa ngokubanzi kwiijenereyitha zenitrogen ezincinci neziphakathi eTshayina.

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5. Inqaba yokwahlula umoya

Inqaba yokwahlula umoya ibandakanya ikakhulu isitshintshi sobushushu, i-liquefier, i-distillation tower, i-evaporator e-condensing, njl. Luhlobo olutsha lwesahlulo esidibeneyo sokutshintsha ubushushu kunye nesakhiwo sesinyithi se-aluminium yonke. Umahluko ophakathi kobushushu buncinci kakhulu kwaye ukusebenza kakuhle kokutshintshiselana kobushushu kuphezulu njenge-98-99%. I-distillation tower sisixhobo sokwahlula umoya. Iindidi zezixhobo zenqaba zahlulwe ngokwamacandelo angaphakathi. Inqaba yepleyiti yesihluzo enepleyiti yesihluzo ibizwa ngokuba yi-sieve plate tower, ibubble cap tower enebubble cap plate ibizwa ngokuba yibubble cap tower, kwaye inqaba epakishweyo epakishwe ngokupakishwa ibizwa ngokuba yi-sieve plate tower. Ipleyiti ye-sieve inesakhiwo esilula, kulula ukuyivelisa, kwaye inokusebenza kakuhle kwepleyiti, ngoko ke isetyenziswa ngokubanzi kwiinqaba zokuhluza i-air fractionation. Iinqaba ezipakishiweyo zisetyenziselwa ikakhulu iinqaba zokudila ezinobubanzi obungaphantsi kwe-0.8m kunye nobude obungekho ngaphezulu kwe-7m. Iibubble cap towers ngoku azifane zisetyenziswe ngenxa yobume bazo obuntsonkothileyo kunye nobunzima bokwenza.

6. I-Turboexpander

Ngumatshini weblade ojikelezayo osetyenziswa ziijenereyitha zenitrogen ukuvelisa amandla abandayo. Yiinjini yegesi esetyenziswa phantsi kweemeko zobushushu obuphantsi. I-Turboexpanders yahlulwe ngohlobo lokuhamba kwe-axial, uhlobo lokuhamba kwe-radial ye-centripetal kunye nohlobo lokuhamba kwe-radial ye-centripetal ngokwendlela yokuhamba kwegesi kwi-impeller; ngokutsho nokuba irhasi iyaqhubeka nokwandisa kwi-impeller, yahlulahlulwe ngohlobo lokumelana nohlobo lwempembelelo. Ukwandiswa okuqhubekayo luhlobo lohlaselo. uhlobo, ayiqhubeki ukwandisa kwaye iba luhlobo lwempembelelo. Inqanaba elinye le-radial axial flow impact turbine izandisi zisetyenziswa ngokubanzi kwizixhobo zokwahlula umoya. Ijeneretha ye-nitrogen yokwahlula umoya we-cryogenic inezixhobo ezinzima, indawo enkulu, iindleko eziphezulu zeziseko ezingundoqo, utyalo-mali oluphezulu lwexesha elilodwa kwizixhobo, iindleko eziphezulu zokusebenza, ukuveliswa kwegesi ecothayo (iiyure ezili-12 ukuya kwiiyure ezingama-24), iimfuno eziphezulu zokufakela, kunye nomjikelo omde. Ukuthathela ingqalelo izixhobo, ukufakwa kunye nezinto ezisisiseko, isikali sotyalo-mali lwezixhobo ze-PSA ezineenkcukacha ezifanayo zezixhobo ezingaphantsi kwe-3500Nm3 / h yi-20% ukuya kwi-50% ephantsi kuneyesixhobo sokuhlukanisa umoya we-cryogenic. Isixhobo sejenereyitha ye-nitrogen ye-cryogenic sifanelekile kwimveliso ye-nitrogen yezoshishino enkulu, kodwa imveliso ye-nitrogen ephakathi kunye nencinci ayinayo uqoqosho.