Amine solution filling
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When refilling the amine solution in a solvent regeneration unit, is it better to add the required amount all at once, or to add it in small amounts over time within a certain period until the required amount is reached? Which method is more effective?
It is usually replenished regularly. For continuously operating units, it can only be added in a one-time manner at the start-up of a new unit.
Hello, my description was inaccurate. Under normal production conditions, we used to add a certain amount of amine solution every quarter; later, we changed to adding the required amount of amine solution in small amounts over several times within a quarter. However, the latter method results in higher levels of SO2 in the exhaust gases.
As required, a certain amount of amine solution must be added daily
Add it daily? It’s too frequent. We usually make a top-up once a month.
It’s like understanding the advantages and disadvantages of each method of refueling
We have had a sulfur recovery unit in operation here for over two years; it has been running with the solvent circulation as required, and no new amine solution has been added. The concentration of the amine solution has remained around 40%, and the other parameters are also satisfactory. (Conventional sulfur recovery design, with the solvent recovery and regeneration system operating independently.) ) The addition of amine solution is generally determined based on its concentration; is the amount lost that high?
Does this affect the concentration of the desulfurization agent?
Has the concentration of the amine solution remained unchanged over 2 years? We usually add a certain amount of it on a monthly basis; if the concentration drops, we add more fresh amine solution
Yes, regarding this data, we ourselves had doubts at first. We even had the data analyzed externally, and it indeed matched the data analyzed by our own unit. The reason for this is closely related to the usual approach to operations and daily management. Of course, the stability of raw materials also has many implications.