What role does calcium hydroxide play in flue gas desulfurization?
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It is converted to CaSO3, which further turns into CaSO4, thereby achieving the removal of SO2. Calcium hydroxide first reacts with sulfur dioxide to form calcium sulfite, which is then oxidized by oxygen in high-temperature conditions to form calcium sulfate; calcium sulfate is not easily decomposed. So it removed the sulfur
The basic principle of wet flue gas desulfurization in power plants: gypsum formation: lol
Power plants have high consumption and generate heat on their own, so limestone is generally used. Other facilities similar to waste incineration power plants or coking plants use calcium hydroxide directly.