Umvelisi we-Oxygen yeVPSA

Izixhobo zokuvelisa ioksijini zePsa, phantsi kwemeko yeqondo lobushushu kwigumbi kunye noxinzelelo lwasemoyeni, ZISEBENZISA i-VPSA ekhethekileyo yokusefa yemolekyuli ukuze ikhethe i-nitrogen, icarbon dioxide kunye namanzi kunye nokunye ukungcola emoyeni, ukuze ifumane ioksijini ngokucoceka okuphezulu (93 ± 2% ).

Imveliso yeoksijini yemveli ngokubanzi yamkela indlela yokwahlukana kwe-cryogenic, enokuvelisa ioksijini ngokucoceka okuphezulu. Nangona kunjalo, izixhobo zinotyalomali oluphezulu, kwaye izixhobo zisebenza phantsi kwemeko yoxinzelelo oluphezulu kunye neqondo lobushushu elisezantsi. Umsebenzi unzima, inqanaba lokulondolozwa liphezulu, kwaye ukusetyenziswa kwamandla kuphezulu, kwaye kuhlala kufuna ukuya kwiiyure ezininzi ukwenza igesi ngesiqhelo emva kokuqala.

Ukusukela ukuba izixhobo zokuvelisa ioksijini zingene kwimizi-mveliso, itekhnoloji iye yaphuhliswa ngokukhawuleza, kuba ukusebenza kwexabiso layo kunakwisivuno esisezantsi kunye neemfuno zokucoceka aziphezulu kakhulu kwimeko inokhuphiswano olomeleleyo, ke lisetyenziswa kakhulu kunyibilikisi, Ukuqhuma ioksijini yokunyusa, ukucoca i-pulp, iglasi yeziko, unyango lwamanzi amdaka kunye nezinye iinkalo.

Uphando lwasekhaya kule teknoloji luqale kwangoko, kodwa kwixesha elide ukukhula kuyacotha.

Ukusukela nge-1990s, izibonelelo zezixhobo zemveliso yeoksijini ye-psa ziye zaqatshelwa ngokuthe ngcembe ngabantu baseTshayina, kwaye kwiminyaka yakutshanje, iinkqubo ezahlukeneyo zezixhobo ziye zafakwa kwimveliso.

Isixhobo se-psa VPSA seoksijini semveliso yeHangzhou Boxiang Gas Equipment Co, Ltd. inesikhundla esiphambili kwicandelo lemveliso yezichumisi, kwaye isiphumo sayo siyamangalisa.

Enye yeendlela eziphambili zophuhliso lwe-psa kukunciphisa inani le-adsorbent kunye nokuphucula amandla emveliso yezixhobo. Nangona kunjalo, ukuphuculwa kwee-molecular sieve zemveliso yeoksijini kuhlala kuqhutywa kwicala lenqanaba eliphezulu le-nitrogen adsorption, kuba ukusebenza kwe-adsorption yeesefu zeemolekyuli sisiseko sePSA.

Isihlunu se-molekyuli esinomgangatho olungileyo kufuneka sibe ne-nitrogen ephezulu kunye ne-oxygen coefficient, amandla okugcwala kwe-adsorption kunye namandla aphezulu.

Psa olunye ulwalathiso lophuhliso oluphambili kukusebenzisa umjikelo omfutshane, awudingi kuphela umgangatho oqinisekileyo we-sieve yeemolekyuli, kwangaxeshanye kufuneka usekwe kulwakhiwo lwangaphakathi lwe-adsorption tower, ukuthintela okunokubangela ukuba imveliso ibe mbi kwaye Izinto ezingalunganga ngokusasazwa okungafaniyo kokuxinana kwerhasi kwi-adsorption tower, kunye nokubeka phambili iimfuno eziphezulu zokutshintsha kwesivalo sebhabhathane.

Kwiinkqubo ezininzi zokuvelisa ioksijini zePSA, i-PSA, iVSA kunye neVPSA inokuthi ihlelwe ngokweendidi ezintathu.

I-PSA yinkqubo enkulu yokususa i-adsorption yomoya oshushu. Inezinto eziluncedo zeyunithi elula kunye neemfuno eziphantsi zeesefu zemolekyuli, kunye nokungalunganga kokusetyenziswa kwamandla aphezulu, ekufuneka isetyenziswe kwizixhobo ezincinci.

I-VSA, okanye inkqubo yoxinzelelo lwe-adsorption ye-atmosfera yomoya, inethuba lokusetyenziswa kwamandla aphantsi kunye nokusilela kwezixhobo ezintsonkothileyo kunye notyalo-mali oluphezulu.

I-VPSA yinkqubo yokucoca i-vacuum ngokusebenzisa uxinzelelo lomoya. Inezinto eziluncedo zokusetyenziswa kwamandla asezantsi kunye nokusebenza okuphezulu kwesisefo seemolekyuli. Utyalo-mali lulonke lwezixhobo lusezantsi kakhulu kunenkqubo ye-VSA, kwaye izinto ezingalunganga ziyimfuneko ephezulu kakhulu kwisihlunu se-molekyuli kunye nevalve.

Irhasi yeHangzhou Boxiang yamkela inkqubo yeVPSA, kwaye yenza uphuculo olukhulu kwinkqubo yemveli kunye nenkqubo, enganciphisi kuphela ukusetyenziswa kwamandla kubuncinci (ibhekisa ekusebenziseni isisefu esinye se molekyuli), kodwa ikwafezekisa injongo yokwenza lula kunye nokwenza izinto ezincinci yezixhobo, kunciphisa utyalo-mali, kwaye inentsebenzo ephezulu / umlinganiselo wexabiso.

Inkqubo yemveliso yeoksijini ipsa ubukhulu becala iqulathe iblower, impompo ye-vacuum, switching valve, absorber kunye neoksijini yeoksijini yokunyusa itanki leoksijini.

Emva kokuba amasuntswana othuli esuswe ngesihluzi sokutsala, umoya ococekileyo uxinzelelwe kwi-0.3 ~ 0.4 Barg yi-Roots blower kwaye ingena kwenye ye-adsorbents.

I-adsorbent igcwele kwi-adsorbent, apho amanzi, ikharbhon diokside, kunye nenani elincinci lezinye izinto zegesi ezifakwe kwisibhengezo se-adsorbent yi-alumina esebenzayo emazantsi, emva koko i-nitrogen ibhengezwe yi-alumina kunye ne-zeolite Ngaphezulu kwesefu ye-13X.

Ioksijini (kubandakanya iargon) licandelo elingafakwanga i-adsorbed kwaye ikhutshiwe kwindawo ephezulu yokuthengisa iintengiso kwitanki lokulinganisa ioksijini njengemveliso.

Xa i-adsorbent ifakwe kwi-adsorbed ukuya kuthi ga kwinqanaba elithile, i-adsorbent iya kufikelela kurhulumente wokugcwala. Ngeli xesha, impompo ye-vacuum iya kusetyenziselwa ukucoca i-adsorbent ngokusebenzisa i-valve yokutshintsha (ngokuchasene nolwalathiso lwe-adsorption), kwaye isidanga se-0.45 ~ 0.5BARg.

Amanzi afunxwe, icarbon dioxide, initrogen kunye nenani elincinci lezinye izinto zerhasi zimpontshelwa emoyeni kwaye i adsorbent iyavuselelwa.
I-adsorber nganye iyatshintsha phakathi kwala manyathelo alandelayo:
-Ntengiso
-Ukususwa
Ukunyathela
La manyathelo mathathu enkqubo esisiseko alawulwa ngokuzenzekelayo yi-PLC kunye nokutshintsha kwenkqubo yevalve.