Sodium-based desulfurization
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In the sodium-based desulfurization of flue gases from Claus process, how can crystallization be prevented in the circulating liquid? Are sodium salts or ammonium salts the main components that cause crystallization?
It’s mainly sodium salts; check the solubility and do the calculations； Adding 30% liquid alkali will definitely cause blockage due to crystallization ； Generally, it can be diluted by adding water in proportion. Of course, it’s best to switch to renewable sources. Feel free to communicate.
Using the sodium method for desulfurizing this Klaus off-gas is very uneconomical; opting for a process that employs complexed iron, which can be regenerated, results in much lower operating costs. :) It is not easy to crystallize either
I use this method to treat trace amounts of sulfur dioxide in exhaust gases and flue gases; 0.98% of the sulfur is converted into elemental sulfur through the Claus reaction. The iron complex solution is used to absorb hydrogen sulfide from the mixed gases. Are you suggesting that I should also install a regeneration injection system and a sulfur melting tank?