What is the minimum temperature required for the decomposition of sodium bicarbonate?
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What is the minimum temperature of the flue gas required for desulfurization using sodium bicarbonate sprayed into the flue gas?
Sodium bicarbonate decomposes slowly in humid or hot air, producing carbon dioxide, and it decomposes completely when heated to 270°C. It decomposes violently in the presence of acid, producing carbon dioxide. Generally, decomposition begins at 50 degrees, but the temperature of the flue gas should ideally be slightly higher than the decomposition temperature; the temperature is set according to the amount to be processed.
It seems to decompose at 50 degrees, so the flue gas temperature must be above 50 degrees. Upon decomposition, it becomes sodium carbonate; if one wants to decompose baking soda, soda ash should have been used from the start.