Tsarkakewa Sodium Hydrosulfide: Bayani da Fahimta

A masana'antar mai da sinadarai, hanyoyin tace mai kamar na'urar tace iskar gas da fashewar catalytic galibi suna samar da iskar gas mai guba. Waɗannan iskar gas mai guba gabaɗaya sun ƙunshi kashi 85%–95% na hydrogen sulfide (H₂S), kashi 3%–10% na carbon dioxide (CO₂), kashi 2%–5% na iskar gas mai guba, da sauran abubuwan da ke cikin 0.5%–3%.

Manyan matatun mai da ƙananan masana'antu galibi suna magance waɗannan iskar gas mai guba ta hanyar shanye su da maganin sodium hydroxide (NaOH) mai kashi 30%. NaOH yana amsawa da H₂S don samar da sodium hydrosulfide (NaHS). Lokacin da yawan NaHS a cikin maganin ya kai kashi 30%, maganin yana shiga tsarin tattarawa. Bayan bushewa da yawan taro, yawan NaHS yana ƙaruwa zuwa kashi 70%, sannan a yanka NaHS mai narkewa zuwa flakes.

Duk da haka, tunda iskar gas mai guba tana ɗauke da CO₂, ana samun ƙazanta kamar sodium carbonate (Na₂CO₃) yayin magani, wanda hakan ke rage tsarkin samfurin NaHS.

Bugu da ƙari, idan aka yi amfani da buɗaɗɗen buɗaɗɗen ganga don yanke NaHS mai narkewa, NaHS yana amsawa da iskar oxygen a cikin iska, yana samar da sodium thiosulfate (Na₂S₂O₃), wanda ke da saurin lalacewa kuma yana da wahalar adanawa. Yankan buɗewa kuma yana fitar da iskar gas mai ban haushi, yana gurɓata yanayin samarwa.

Danna nan don samun rangwamen farashin sodium hydrosulfide, za a sami abubuwan mamaki.