Amine solution absorbs hydrogen sulfide
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1. What is the absorption rate achievable when using methyl diethanolamine (MDEA) to absorb hydrogen sulfide gas? 2. What is the typical removal efficiency of hydrogen sulfide in the desulfurization regeneration tower?
1. Methyl diethanolamine (MDEA) can be used to absorb hydrogen sulfide gas, with an absorption rate of around 95%. 2. The hydrogen sulfide removal rate in the desulfurization regeneration tower can generally reach over 98%.
The absorption of hydrogen sulfide by amine solutions varies significantly depending on the absorption pressure; it is generally expressed in terms of the number of moles of acidic components absorbed per mole of amine. The removal efficiency of hydrogen sulfide is over 99%, with the concentration of hydrogen sulfide in the purified exhaust gas usually being below 300 PPM. The hydrogen sulfide content in the regenerated lean amine solution is generally around 0.1 g/l.