July 2015

Gas Treating

Improve LPG treating via advanced amine-solvent recovery technologies

Capacity and throughput improvement in a refinery LPG treating unit are made possible by implementing an amine recovery program.

Engel, D., Burns, H., Nexo Solutions; Spooner, B., Amine Experts

Processing liquefied petroleum gas (LPG) in refineries using amine units has its challenges with respect to hydrogen sulfide (H2S) and mercaptans removal. Amine sweetening of LPG can also result in major amine solvent losses. Such losses are not only confined to the loss of the amine solvent itself, but they can also have a negative impact on downstream processes, such as caustic treaters, molecular (mol) sieve dryers and alkylation units. Often, the end result is that the final hydrocarbon product is out of specification. Copper-strip corrosion analysis is a common method that determines whether a final product is in specification. A difficulty for hydrocarbon processing industry (HPI) plan

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