xov xwm

1. Pulverized thee txo txoj kev, mirabilite thiab pulverized thee yog sib tov nyob rau hauv ib tug ratio ntawm 100: (21-22.5) (qhov hnyav piv) thiab calcined thiab txo ntawm qhov kub ntawm 800-1100 ° C, thiab cov resultant yog txias thiab thermally. yaj mus rau hauv cov kua nrog dilute lye, tom qab sawv ntsug rau kom meej, lub sab sauv concentrated lye tov yog concentrated kom tau cov khoom sodium sulfide. Ntsiav tshuaj (los yog granule) sodium sulfide cov khoom tau los ntawm kev hloov lub tank, ntsiav tshuaj (los yog granulation)
Kev sib npaug tshuaj tiv thaiv: Na2SO4 + 2C → Na2S + 2CO2

2.Absorption method: 380-420 g/L sodium hydroxide tov yog siv los nqus cov pa khib nyiab uas muaj H2S> 85% hydrogen sulfide, thiab cov khoom tau txais yog evaporated thiab concentrated kom tau txais sodium sulfide cov khoom tiav.
Kev sib npaug tshuaj tiv thaiv: H2S + 2NaOH → Na2S + 2H2O

3. Barium sulfide txoj kev, sodium sulfide tuaj yeem tau txais los ntawm cov khoom lag luam thaum sodium sulfate thiab barium sulfide siv rau cov tshuaj tiv thaiv metathesis los npaj precipitated barium sulfate. Qhov ntawd
Chemical reaction equation: BaS+Na2SO4 → Na2S+BaSO4↓

4. Txoj kev txo cov pa roj, nyob rau hauv lub xub ntiag ntawm hlau catalyst, hydrogen (los yog carbon monoxide, cov khoom siv roj, methane gas) yog reacted nrog sodium sulfate nyob rau hauv lub boiling cub, thiab high-zoo anhydrous granular sodium sulfide (muaj Na2S 95%) tau tau txais. ~ 97%).
Chemical Reaction Equation:
Na2SO4 + 4CO → Na2S + 4CO2
Na2SO4 + 4H2 → Na2S + 4H2O

5.Production method, refining method siv sodium sulfide tov nrog ib tug concentration ntawm txog 4% by-product nyob rau hauv cov txheej txheem ntawm ua precipitated barium sulfate raws li raw khoom. Tom qab tso nws mus rau hauv ob qhov kev cuam tshuam evaporator kom evaporate mus rau 23%, nws nkag mus rau hauv lub tank stirring kom tshem tawm cov hlau. , Tom qab kev tshem tawm cov pa roj carbon monoxide, cov lye tau muab tso rau hauv cov evaporator (ua los ntawm cov khoom siv nickel ntshiab) kom evaporate cov lye kom ncav cuag qhov concentration, thiab xa mus rau lub nruas dej txias hom ntsiav tshuaj tshuab.

Peb lub Hoobkas siv ob txoj kev, pulverized thee txo txoj kev thiab barium sulfide txoj kev, los tsim sodium sulfide liab flakes thiab daj flakes.