nkhani

1. Njira yochepetsera malasha, mirabilite ndi malasha opukutidwa amasakanizidwa mu chiŵerengero cha 100: (21-22.5) (chiŵerengero cholemera) ndi calcined ndi kuchepetsedwa pa kutentha kwakukulu kwa 800-1100 ° C, ndipo zotsatira zake zimakhazikika ndi kutentha. kusungunuka mu madzi ndi dilute lye , ataimirira kumveketsa, chapamwamba anaikira lye njira anaikira kupeza olimba sodium sulfide.Piritsi (kapena granule) sodium sulfide mankhwala amapezeka kudzera thanki yotengerapo, mapiritsi (kapena granulation)
Chemical reaction equation: Na2SO4+2C→Na2S+2CO2

2.Mayamwidwe njira: 380-420 g/L sodium hydroxide njira ntchito kuyamwa zinyalala mpweya munali H2S> 85% wa hydrogen sulfide, ndipo analandira mankhwala chamunthuyo ndi anaikira kupeza sodium sulfide anamaliza mankhwala.
Chemical reaction equation: H2S+2NaOH→Na2S+2H2O

3. Njira ya Barium sulfide, sodium sulfide ikhoza kupezedwa ngati mankhwala pamene sodium sulphate ndi barium sulfide amagwiritsidwa ntchito popanga metathesis kukonzekera precipitated barium sulphate.Kuti
Chemical reaction equation: BaS+Na2SO4→Na2S+BaSO4↓

4. Njira yochepetsera mpweya, pamaso pa chitsulo chothandizira, hydrogen (kapena carbon monoxide, mpweya wopangira, methane gasi) imachitidwa ndi sodium sulphate mu ng'anjo yotentha, ndi apamwamba kwambiri anhydrous granular sodium sulfide (yokhala Na2S 95%) ikhoza. kupezedwa.~ 97%).
Chemical reaction equation:
Na2SO4+4CO→Na2S+4CO2
Na2SO4+4H2→Na2S+4H2O

5. Njira yopangira, njira yoyeretsera imagwiritsa ntchito njira ya sodium sulfide yokhala ndi pafupifupi 4% mwa mankhwala popanga precipitated barium sulfate monga zopangira.Ikayipopa mu evaporator yamphamvu ziwiri kuti isungunuke mpaka 23%, imalowa mu thanki yogwedeza kuchotsa chitsulo., Pambuyo pa carbon kuchotsa mankhwala, lye amapopedwa mu evaporator (opangidwa ndi faifi tambala zakuthupi) kuti asamasanduke nthunzi ya lye kuti afikire ndende, ndi kutumizidwa ku ng'oma madzi kuzirala mtundu piritsi makina.

Fakitale yathu imagwiritsa ntchito njira ziwiri, njira yochepetsera malasha ndi njira ya barium sulfide, kupanga ma flakes ofiira a sodium sulfide ndi ma flakes achikasu.