Tailoring formulations

Removal of sour or acid gas components such as hydrogen sulfide (H2S) or carbon dioxide (CO2) from gas is a common process requirement known as acid gas removal or gas sweetening. Depending on the source of the gas streams and the intended end use, the requirements for the acid gas removal unit can vary widely. While specifications for residual sulfur components are typically very stringent, H2S and other sulfur species are not present in every gas stream. The CO2 concentration may vary from nil to more than 50 percent, and not every application necessitates complete removal. In addition, the gas stream may also contain traces of other organic species such as mercaptans or carbonyl sulfide. Amines enable efficient removal of acid gases with minimal absorption of inert components, including hydrocarbons, hydrogen, and nitrogen. However, the kinetics of that reaction vary widely depending on the type of amine and nature of the acid gas component. Through selection of the amine or combination of amines and plant design, the acid gas removal system can be optimized for its specific gas composition and treated gas application. Eastman will be pleased to assist you in this area; click here to learn more.