Isebenza kanjani i-Pressure Swing Adsorption?
Lapho ukhiqiza eyakho i-nitrogen, kubalulekile ukwazi nokuqonda izinga lokuhlanzeka ofuna ukulifinyelela.Ezinye izinhlelo zokusebenza zidinga amazinga aphansi okuhlanzeka (phakathi kuka-90 no-99%), njengokwehla kwamandla emali amathayi nokuvimbela umlilo, kanti ezinye, njengezicelo embonini yokudla nesiphuzo noma ukubunjwa kwepulasitiki, zidinga amazinga aphezulu (kusuka ku-97 kuya ku-99.999%).Kulezi zimo ubuchwepheshe be-PSA buyindlela ekahle nelula yokuhamba.
Empeleni ijeneretha ye-nitrogen isebenza ngokuhlukanisa ama-molecule e-nitrogen kuma-athomu omoya-mpilo ngaphakathi komoya ocindezelwe.I-Pressure Swing Adsorption yenza lokhu ngokubamba umoya-mpilo ophuma emoyeni ocindezelwe kusetshenziswa i-adsorption.I-Adsorption yenzeka lapho ama-molecule ezibophezela ku-adsorbent, kulokhu ama-molecule e-oksijini anamathela kusisefo se-carbon molecular (CMS).Lokhu kwenzeka emikhunjini yokucindezela emibili ehlukene, ngayinye egcwele i-CMS, eshintsha phakathi kwenqubo yokuhlukanisa kanye nenqubo yokuvuselela.Okwamanje, masibabize ngombhoshongo A kanye nombhoshongo B.
Okokuqala, umoya ocindezelwe ohlanzekile nowomile ungena embhoshongweni A futhi njengoba ama-molecule e-oksijini emancane kunama-molecule e-nitrogen, azongena ezimbotsheni zesihlungo se-carbon.Ngakolunye uhlangothi ama- molecule e- nitrogen awakwazi ukungena ezimbotsheni ukuze adlule isisefo se-carbon molecular.Ngenxa yalokho, ugcina une-nitrogen yokuhlanzeka oyifunayo.Lesi sigaba sibizwa nge-adsorption noma isigaba sokuhlukanisa.
Akugcini lapho kodwa.I-nitrogen eningi ekhiqizwa embhoshongweni A iphuma ohlelweni (ilungele ukusetshenziswa ngokuqondile noma ukugcinwa), kuyilapho ingxenye encane ye-nitrogen ekhiqizwa indizela embhoshongweni B ngokuphambene (kusuka phezulu kuye phansi).Lokhu kugeleza kuyadingeka ukuze kuphushe umoya-mpilo owabanjwa esigabeni sangaphambilini se-adsorption sombhoshongo B. Ngokukhulula ingcindezi embhoshongweni B, ama-sefa e-carbon molecular alahlekelwa amandla awo okubamba ama-molecule e-oksijini.Azophuma ezisefweni futhi athwalwe yi-exhaust ukugeleza kwe-nitrogen okuncane okuvela kumbhoshongo A. Ngokwenza lokho uhlelo lwenza indawo yama-molecule e-oksijini amasha anamathisele ezisefweni esigabeni esilandelayo sokukhangisa.Le nqubo siyibiza 'yokuhlanza' ukuvuselelwa kombhoshongo ogcwele umoya-mpilo.
Okokuqala, ithangi A lisesigabeni se-adsorption ngenkathi ithangi B livuselela.Esigabeni sesibili imikhumbi yomibili ilinganisa ingcindezi yokulungiselela ukushintshwa.Ngemva kokushintsha, ithangi A liqala ukukhiqiza kabusha kuyilapho ithangi B likhiqiza i-nitrogen.
Kuleli qophelo, ingcindezi kuyo yomibili imibhoshongo izolingana futhi izoshintsha izigaba ukusuka ku-adsorbing iye ekukhiqizeni kabusha futhi ngokuphambene nalokho.I-CMS embhoshongweni A izogcwala, kuyilapho umbhoshongo B, ngenxa yokucindezeleka, uzokwazi ukuqalisa kabusha inqubo ye-adsorption.Le nqubo ibizwa nangokuthi 'i-swing of pressure' , okusho ukuthi ivumela amagesi athile ukuba abanjwe ngomfutho ophakeme futhi akhululwe ngomfutho ophansi.Uhlelo lwe-PSA lwemibhoshongo emibili luvumela ukukhiqizwa kwe-nitrogen okuqhubekayo ezingeni elifiswayo lokuhlanzeka.
Isikhathi sokuthumela: Nov-25-2021