Ngabe ingcindezi icindezela kanjani umsebenzi we-adsorption?
Lapho ukhiqiza owakho i-nitrogen, kubalulekile ukwazi nokuqonda izinga lokuhlanzeka ofuna ukulifinyelela. Ezinye izinhlelo zidinga amazinga aphansi wokuhlanzeka (phakathi kwama-90 no-99%), njengokukhuphuka kwamathayela nokuvinjwa komlilo, ngenkathi abanye, badinga amazinga aphezulu (adinga ama-99 kuye ku-99.999%. Kulezi zimo ubuchwepheshe be-PSA kuyindlela enhle futhi elula yokuhamba.
Empeleni i-nitrogen generator isebenza ngokuhlukanisa ama-molecule we-nitrogen kusuka kumamolekyuli we-oxygen ngaphakathi komoya ocindezelwe. Ingcindezi Swing Adsorption yenza lokhu ngokukhipha umoya-mpilo ophonsa umoya kusuka ekusakazweni komoya okucindezelwe usebenzisa ama-adsorption. I-adsorption yenzeka lapho ama-molecule ebopha khona kwi-adsorbent, kulokhu ama-molecule we-oksijini anamathela ku-carbon molecular ngesihluthuli (CMS). Lokhu kwenzeka emikhunjini emibili ehlukile yokucindezela, ngalinye ligcwele i-CMS, elishintsha phakathi kwenqubo yokuhlukanisa kanye nenqubo yokuvuselelwa kabusha. Okwamanje, ake sibabizele umbhoshongo u-A noMbhoshongo B.
Okokuqala, umoya ohlanzekile nowomile ocindezelwe ungena embhoshongo a futhi njengoba ama-molecule omoya-mpilo mancane kunama-molecule we-nitrogen, ayofaka ama-pores esihluthu sekhabhoni. Ama-molecule we-nitrogen ngakolunye uhlangothi ayikwazi ukulingana nama-pores ukuze adlule isihlungo sekhabhoni. Ngenxa yalokho, ugcina une-nitrogen yobumsulwa obufisayo. Lesi sigaba sibizwa ngokuthi i-adsorption noma isigaba sokuhlukanisa.
Akuyeki lapho. Iningi le-nitrogen elikhiqizwa embhoshongweni uphuma ohlelweni (ukulungele ukusetshenziswa okuqondile noma ukugcinwa), ngenkathi ingxenye encane ye-nitrogen ekhiqizwayo indiza ibe umbhoshongo b ngandlela thile (ukusuka phezulu kuya phansi). Lokhu kugeleza kudingeka ukucindezela umoya-mpilo othathwe esigabeni sangaphambilini se-adgerption of tower B. ngokukhipha ingcindezi e-tower B, ama-carbon molecular sieves alahlekelwa amandla abo okubamba ama-molecule e-oksijini. Bazovimbela ama-sieves bese bethathwa ngokuqokwa ngokugeleza kwe-nitrogen encane beqhamuka eTower A. Ngokwenza ukuthi uhlelo lwenze indawo ama-molecule amasha we-oksijini ukuze anamathisele esigabeni esilandelayo se-adsorption. Sibiza le nqubo 'yokuhlanza' umoya we-oxygen wagcwala kabusha umbhoshongo.
Okokuqala, i-tank a isesigabeni se-adsorption ngenkathi ithangi b kabusha. Esigabeni sesibili somibili imikhumbi ilingana nengcindezi yokulungiselela ukushintshwa. Ngemuva kokushintsha, ithangi aqala kabusha ngenkathi ithangi b likhiqiza i-nitrogen.
Ngalesi sikhathi, ingcindezi emibhoshongweni yomibili izolingana futhi izoshintsha izigaba kusuka ku-adsorbing ukuze iphindise futhi iveze okuphambene nalokho. I-CMS e-tower a izogcwala, kuyilapho i-tower b, ngenxa yokucindezelwa, izokwazi ukuqala kabusha inqubo ye-adsorption. Le nqubo ibizwa futhi ngokuthi 'ukujikijela kwengcindezi', okusho ukuthi ivumela ukuthi ivumela amagesi athile ukuthi athungwe ngokucindezela okuphezulu futhi akhishwe ngokucindezela okuphansi. Uhlelo lwe-PSA TOWER PSA luvumela ukukhiqizwa okuqhubekayo kwe-nitrogen ezingeni lokuhlanzeka elifunekayo.
Isikhathi sePosi: Nov-25-2021