nkhani

1. Njira yochepetsera malasha, mirabilite ndi malasha opukutidwa amasakanizidwa mu chiŵerengero cha 100: (21-22.5) (chiŵerengero cha kulemera kwake) ndi calcined ndi kuchepetsedwa pa kutentha kwakukulu kwa 800-1100 ° C, ndipo zotsatira zake zimakhazikika ndi kutentha. kusungunuka mu madzi ndi dilute lye , atayima kuti amveke, chapamwamba anaikira soda njira anaikira kupeza olimba sodium sulfide. Piritsi (kapena granule) sodium sulfide mankhwala amapezeka kudzera thanki kutengerapo, piritsi (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 sulfate ndi barium sulfide amagwiritsidwa ntchito popanga metathesis pokonzekera mpweya wa 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 anhydrous granular sodium sulfide yapamwamba kwambiri (yokhala Na2S 95%) 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% ndi mankhwala popanga precipitated barium sulfate monga zopangira. Ikayipopera mu evaporator ya mphamvu ziwiri kuti isungunuke mpaka 23%, imalowa mu thanki yogwedeza kuchotsa chitsulo. , Pambuyo pa mankhwala ochotsa mpweya, lye amapopedwa mu evaporator (yopangidwa ndi zinthu zoyera za nickel) kuti asungunuke lye kuti afikire ndende, ndikutumiza ku makina a piritsi amtundu wa madzi ozizira.

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.