Kuyeretsa Sodium Hydrosulfide: Mbiri ndi Chidziwitso

Mu mafakitale a mafuta ndi mankhwala, njira zoyeretsera monga kusungunuka kwa vacuum ndi kusweka kwa catalytic nthawi zambiri zimapanga mpweya wa acidic. Mpweya wa acidic uwu nthawi zambiri umakhala ndi 85%–95% hydrogen sulfide (H₂S), 3%–10% carbon dioxide (CO₂), 2%–5% mpweya wachilengedwe, ndi 0.5%–3% zigawo zina.

Makampani oyeretsera ang'onoang'ono ndi apakatikati nthawi zambiri amachiritsa mpweya wa acidic uwu powuyamwa ndi yankho la 30% la sodium hydroxide (NaOH). NaOH imachitapo kanthu ndi H₂S kuti ipange sodium hydrosulfide (NaHS). Pamene kuchuluka kwa NaHS mu yankho kufika pa 30%, yankholo limadutsa mu ndondomeko ya kuchuluka. Pambuyo pa kutaya madzi m'thupi ndi kuchuluka, kuchuluka kwa NaHS kumawonjezeka kufika pa 70%, ndipo NaHS yosungunukayo imadulidwa kukhala zidutswa.

Komabe, popeza mpweya wa acidic uli ndi CO₂, zinthu zosafunika monga sodium carbonate (Na₂CO₃) zimapangidwa panthawi ya chithandizo, zomwe zimachepetsa kuyera kwa mankhwala a NaHS.

Kuphatikiza apo, akagwiritsidwa ntchito kudula NaHS yosungunuka, NaHS imachitapo kanthu ndi mpweya womwe uli mumlengalenga, ndikupanga sodium thiosulfate (Na₂S₂O₃), yomwe imatha kuwonongeka mosavuta komanso kukhala yovuta kusunga. Kuduladula kotseguka kumatulutsanso mpweya wokwiyitsa, zomwe zimaipitsa malo opangira.

Dinani apa kuti mupeze mtengo wotsika wa sodium hydrosulfide, padzakhala zodabwitsa.