Alkali source in ammonia-based desulfurization
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What are the methods for adding ammonia in ammonia-based desulfurization, and in what forms does ammonia exist?
In the HPF method for desulfurization, most of it uses ammonia water obtained after distillation of excess ammonia water, with some sodium carbonate being added as well. If it’s vacuum potassium carbonate or monoethanolamine, as the name implies, that’s what is being used. There are also many other desulfurization methods; it depends on which one you are asking about
Reply to 2# hao101029: I heard that the HPF method for desulfurization can use ammonia; where does the ammonia come from?
Reply to 3# txwhpdzs: Ammonia vapor or ammonia solution remaining after the distillation of ammonia water
Ammonia water, or liquid ammonia; liquid ammonia requires a vaporizer, and the ammonia gas has not yet been in contact with it
HPF desulfurization uses residual ammonia water for vaporization or purchased concentrated ammonia water, while modified ADA uses sodium carbonate
1 Ammonia recovered from the system 2 Liquid ammonia produced in ammonia synthesis 3 Purchased
The ammonia gas after the ammonia vaporization tower serves as a base source