Who has information on solvent regeneration in two stages that they can share?
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Dear seniors in the forum, if anyone has information on the regeneration of solvents in two stages, please share it or send it to my email address lxl2006222@126.com. Thank you. I had seen articles like this in magazines before, but I can’t find them now. Also, what is the actual performance of this regeneration method in real operation? However, I personally believe that if sulfur has its own separate solvent regeneration system, there is no need for staged regeneration. It is sufficient to increase the regeneration depth so that it can fully meet the requirements for purifying exhaust gases.
Our solvent regeneration is two-stage regeneration. The liquid drawn from the middle section is used to supply lean amine solution to the entire plant’s hydrogenation units, while the lean liquid drawn from the bottom is intended specifically for the treatment of exhaust gases from sulfur recovery. As the original poster said, if a separate regeneration system is installed for the sulfur recovery unit, it is indeed not necessary to use two-stage extraction.
In fact, the degree of amine solution regeneration is closely related to energy consumption; two-stage regeneration is primarily aimed at saving energy by making full use of the semi-poor liquid with a low acid gas load. The cascade SCOT process can be referred to.
I think this argument makes sense. But now: I regenerate sulfur separately, yet it is regenerated at both ends; the design response is that this can save a large amount of steam.
So what is the hydrogen sulfide level in the hydrogenated lean liquid at your facility?
It’s not just hydrogenation; it applies to everything other than sulfur that can be easily regenerated, with the required quality level being < 0.01 molH2S/mol MDEA
Your metrics are so high. Is there a significant change in the tower structure? Add a friend to discuss it