Can the double-alkali method for desulfurization use sodium hydroxide and calcium carbonate?

2019-07-23View Original

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Can the double-alkali method for desulfurization use sodium hydroxide and calcium carbonate?

Reply #22019-07-24

No, the well-absorbed alkaline solution enters the displacement tank, where it exchanges OH- ions with calcium hydroxide, and thus the solution turns back into sodium hydroxide solution. Calcium carbonate can only dissolve in acidic conditions; the alkali solution that has been well absorbed is alkaline in nature, so it cannot be displaced.

Reply #32019-07-25

:Lol, the double-alkali method is already a crappy solution; you still want to make things worse. Low-price competition is deadly

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