Isebenza Kanjani I-Oxygen PSA Technique?
I-Pressure swing adsorption (PSA) ukukhiqizwa komoya-mpilo ubuchwepheshe bokuhlukanisa igesi obususelwe kumgomo wokukhangisa ngokomzimba. Ihlanza umoya-mpilo emoyeni ngokusebenzisa i-adsorption ekhethiwe yezisefo zamangqamuzana.
Umgomo Oyisisekelo Wokukhiqizwa Kwe-oksijeni ye-PSA
- Ukukhiqizwa komoyampilo we-PSA kusebenzisa umehluko ekusebenzeni kwe-adsorption ye-nitrogen nomoya-mpilo (emoyeni) kusisefo samangqamuzana, kanye nesici sokuthi amandla okukhangisa ashintsha ngokucindezela.
- Ngaphansi kwezimo zokulingana, isisefo semolekyuli sikhanga kakhulu ingxenye yenitrogen. Ngaphansi kwezimo zengcindezi eyengeziwe, ukufakwa kwe-nitrogen kuphezulu kunomthamo we-adsorption ngengcindezi ephansi.
- Futhi ukuvuselelwa kwe-desorption ye-sieve yamangqamuzana kufinyelelwa ngokushintsha ingcindezi yokusebenza, okungukuthi, i-adsorption ecindezelweyo kanye ne-decompression desorption, ngaleyo ndlela kuzuzwe ukuhlukaniswa kwe-oxygen ne-nitrogen.
I-Zeolite Molecular Sieve Kuhlelo Lokukhiqiza Oxygen
- Ingxenye eyinhloko yesistimu yokukhiqiza umoya-mpilo isisefo samangqamuzana. Nakuba i-oksijini ne-nitrogen kungezona{1}}izinto ze-polar, zizokhiqiza ama-dipoles enziwe ngaphansi kwethonya lama-zeolite molecular sieves.
- Kukhona okukhangayo (i-inductive force) phakathi kwe-dipole eyenziwe kanye ne-dipole engokwemvelo yama-molecule asezindaweni ezishisayo. Ngenxa yokuthi amandla e-nitrogen e-inductive makhulu kunawomoya-mpilo, isisefo se-molecular sikhanga i-nitrogen eningi kune-oxygen.
- Lapho umoya udlula ku-zeolite molecular sieve, i-nitrogen ikhethwa ngokukhethekile ngesisefo samangqamuzana futhi inothiswe kuma-micropores ayo, kuyilapho kukhishwa inani elincane lomoya-mpilo, futhi iningi layo lidlula kusihlungi samangqamuzana ukuze libe igesi yomkhiqizo.
Inqubo Yokusebenza Ye-PSA Oxygen Production
- Umoya uqala ngokucindezelwa-yi-air compressor esebenza ngokugcwele futhi udlula ezihlungini eziningi ukuze ukhiphe ingxenye enkulu yothuli nokungcola; khona-ke umoya oshisayo upholiswa ngesomisi esibandayo ukuze ususe umswakama emoyeni; futhi ekugcineni, ingena ethangini lokugcina umoya ukuze igcine ibhafa kanye nokuqiniswa kwengcindezi, futhi ingene embhoshongweni we-adsorption ovuselelwe futhi osesimweni sokusebenza nge-valve yokushintsha.
- Embhoshongweni we-adsorption, i-nitrogen, i-carbon dioxide namanye amagesi adsorbed ngamasefa amangqamuzana, futhi umoya-mpilo uyacetshiswa ukusuka phezulu kombhoshongo we-adsorption futhi ungena ku-oxygen buffer tank. Epayipini lokuphuma lethangi lebhafa ye-oxygen, imbobo yesampula inikezwa ukuze kutholwe ukuhlanzeka komoyampilo. I-oxygen efanelekayo ibe isihlungwa ngesihlungi sothuli kanye nesihlungi sokuvala inzalo ukuze kutholwe umkhiqizo{2}}womoya wezinga elifanele.
- Ukuze kutholwe umkhiqizo oqhubekayo futhi ozinzile{0}wezinga lowe-oksijini, okokusebenza kokukhiqiza umoya-mpilo we-PSA kufakwe okungenani imibhoshongo ye-adsorption emibili ukuze ikhiqize umoya-mpilo ngokushintshana. Lapho umbhoshongo owodwa ukhangisa futhi ukhiqiza umoya-mpilo, omunye umbhoshongo we-adsorption usesimweni sokwenziwa kabusha, futhi ingxenye yamagesi akhishwa inqubo yokukhiqiza kabusha ayathuliswa ngesifihlisi bese ededelwa ngaphandle.
