I-Evolution of Hydrogen Production: Natural Gas vs. Methanol

IHydrojeni, umthwali wamandla oguquguqukayo, iya ngokuya iqashelwa ngeqhaza layo ekuguquleleni ikusasa lamandla esimeme. Izindlela ezimbili ezivelele zokukhiqiza i-hydrogen yezimboni ngegesi yemvelo ne-methanol. Indlela ngayinye inezinzuzo nezinselele zayo eziyingqayizivele, ebonisa ukuziphendukela kwemvelo okuqhubekayo kubuchwepheshe bamandla.

I-Natural Gas Hydrogen Production(inqubo yokuguqula umusi)

Igesi yemvelo, ngokuyinhloko eyakhiwe nge-methane, iyisitoko esivame kakhulu ukukhiqizwa kwe-hydrogen emhlabeni jikelele. Inqubo, eyaziwa ngokuthiukuguqulwa kwe-steam methane(SMR), ihlanganisa ukusabela kwe-methane ngesitimu emazingeni okushisa aphezulu ukuze kukhiqizwe i-hydrogen ne-carbon dioxide. Le ndlela ithandwa kakhulu ngokusebenza kwayo kahle kanye nokukaleka, okuyenza ibe umgogodla wokukhiqizwa kwe-hydrogen yezimboni.

Naphezu kokubusa kwayo, ukuthembela kugesi yemvelo kuphakamisa ukukhathazeka mayelana nokukhishwa kwekhabhoni. Kodwa-ke, intuthuko kubuchwepheshe bokubanjwa nokugcinwa kwekhabhoni (CCS) iyahlanganiswa ukuze kuncishiswe le mithelela yemvelo. Ukwengeza, ukuhlola kokusebenzisa ukushisa okuvela ezimbonini ze-nuclear ukuze kuthuthukiswe ukukhiqizwa kwe-hydrogen kungenye indawo yocwaningo enganciphisa nakakhulu i-carbon footprint yokukhiqizwa kwegesi yemvelo ye-hydrogen.

Ukukhiqizwa kwe-Methanol Hydrogen (ukuguqulwa kwe-steam ye-methanol)

I-Methanol, ikhemikhali enemisebenzi eminingi etholakala kugesi yemvelo noma i-biomass, inikeza enye indlela yokukhiqiza i-hydrogen. Inqubo ihilelaukuguqulwa kwe-methanol steam(MSR), lapho i-methanol iphendulana nesitimu ukuze ikhiqize i-hydrogen ne-carbon dioxide. Le ndlela ithola ukunakwa ngenxa yamandla ayo okusebenza kahle kakhulu kanye nokukhishwa kwekhabhoni ephansi uma kuqhathaniswa nokuguqulwa kwegesi yemvelo.

Inzuzo ye-methanol isekubeni kwayo kalula ukugcina nokuthutha, okuqonde kakhulu kune-hydrogen. Lesi sici sikwenza kube inketho ekhangayo ekukhiqizeni i-hydrogen ehlukaniswe ezindaweni ezithile, okungenzeka kunciphise isidingo sengqalasizinda ebanzi. Ngaphezu kwalokho, ukuhlanganiswa kokukhiqizwa kwe-methanol nemithombo yamandla avuselelekayo, njengomoya nelanga, kungathuthukisa izinzuzo zayo zemvelo.

Ukuhlaziya Ngokuqhathanisa

Kokubili igesi yemvelo kanye ne-methanolukukhiqizwa kwe-hydrogenizindlela zinokufaneleka kanye nemikhawulo yazo. Njengamanje igesi yemvelo iyindlela eyonga kakhulu futhi esebenza kahle, kodwa i-carbon footprint yayo isalokhu ikhathaza kakhulu. I-Methanol, ngenkathi inikeza enye indlela ehlanzekile, isesigabeni sokuqala sokuthuthuka futhi ibhekene nezinselele ekukhuphuleni umkhiqizo.

Ukukhetha phakathi kwalezi zindlela kuncike ezicini ezihlukahlukene, okuhlanganisa ukutholakala kwesitoko, ukucatshangelwa kwemvelo, kanye nentuthuko yezobuchwepheshe. Njengoba umhlaba uphokophele ekusaseni lamandla esimeme kakhudlwana, ukuthuthukiswa kwezinhlelo ezixubile ezihlanganisa amandla azo zombili izindlela kungaba isiqondiso esithembisayo.

Isiphetho

Ukuziphendukela kwemvelo okuqhubekayo kuisixazululo se-hydrogen(isikhungo sokukhiqiza i-hydrogen) sigcizelela ukubaluleka kokuhlukanisa imithombo yamandla kanye nokuhlanganisa izixazululo ezintsha. Ukukhiqizwa kwegesi yemvelo kanye ne-methanol hydrogen kumele izindlela ezimbili ezibalulekile okuthi, lapho sezilungiselelwe futhi zihlanganiswe, zibe negalelo elikhulu ekuguqukeni kwamandla omhlaba. Njengoba ucwaningo nentuthuko iqhubeka, lezi zindlela cishe zizothuthuka, zivule indlela yomnotho we-hydrogen ozinzile.