Onsite Oxygen Production Rau Biogas

Biogas yog ib qho biofuel rov ua dua tshiab uas tsim los ntawm kev puas tsuaj ntawm cov organic teeb meem thiab tau dhau los ua qhov tseem ceeb ntawm cov cua sov thiab hluav taws xob nyob rau xyoo tas los no. Nws cov khoom tseem ceeb yog methane (CH₄) thiab carbon dioxide (CO₂), thaum nws tseem muaj dej, cov lej ntawm nitrogen, carbon monoxide (CO) thiab hydrogen (H₂). Txawm li cas los xij, biogas tuaj yeem muaj impurities, tshwj xeeb tshaj yog hydrogen sulfide (H₂S), uas tuaj yeem ua teeb meem yog tias tsis kho.

Qee qhov biomass siv rau biogas ntau lawm yuav muaj cov sulfur siab, uas ua rau muaj H₂S. Thaum ua ke nrog cov dej noo, H₂S tsim cov kua qaub thiab corrosive sib xyaw (alkaline sulfide), uas tuaj yeem ua rau muaj kev puas tsuaj loj rau cov khoom siv ntoo, pob zeb thiab hlau fermentation (xws li cov kav dej).

Txhawm rau daws cov teeb meem no, oxygen tuaj yeem nkag mus rau hauv cov txheej txheem biogas, piv txwv li biogas desulfurization. Los ntawm kev tswj cov pa oxygen ntau npaum li cas hauv lub fermenter, kev loj hlob ntawm cov kab mob tshwj xeeb tau txhawb nqa, thiab cov pa oxygen muaj qhov cuam tshuam tsis zoo thaum nws los rau hauv kev sib cuag nrog cov roj corrosive xws li H₂S, tiv thaiv kev puas tsuaj rau cov khoom siv thiab cov nroj tsuag.