What is an appropriate liquid-to-gas ratio for magnesium-based desulfurization?
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As the title suggests, the value is around 15 for the limestone method; what about the magnesium method?
The gas-to-liquid ratio of the absorption solution in the magnesium process is generally selected as 4–4.5.
Since the dissolved alkalinity of magnesium-based systems is hundreds of times higher than that of calcium-based systems, the required liquid-to-gas ratio is only 1/6 to 1/3 of that in calcium-based desulfurization processes; whereas the ratio is 15 for lime-based methods, it is generally 2.5 to 5 for magnesium-based methods； Moreover, the absorption reaction intensity using the magnesium method is higher than that of the calcium method; this not only **reduces the volume of the circulating fluid**, but also results in a significantly lower height for the absorption tower compared to limestone-based desulfurization towers.
But the operating cost of the magnesium method is high; what about the treatment of by-products? I still prefer the calcium method; its efficiency is also satisfactory. Components with a well-structured design can reduce the liquid-to-gas ratio.
I would like to ask: when you talk about the magnesium method, is pure magnesium used as a desulfurization agent, or is magnesium used as an additive? Sorry for being a beginner!!
The liquid-to-gas ratio in the magnesium method is lower than that in the calcium method; this depends on the specific process requirements
6# Half a barrel of water uses magnesium oxide as a desulfurization agent