When desulfurizing coal-fired boilers, which method is more suitable for widespread use: ammonia-based desulfurization or calcium-based desulfurization?
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The ammonia method is prone to ammonia escape and aerosol formation, while the calcium method generates large amounts of waste gypsum!
{:3_54:} Can’t the two be used together? By using calcium as the finishing agent, this equipment can be made smaller. Our old boilers were small, and they used dilute alkaline solutions with a pH of 8-9; those are known as water film dust collectors. . . .