Immobilized Amines for Biogas and Sour Gas Processing

Presented at Annual Conference, 13 - 15 September 2017 at Sofitel Chain Bridge Hotel, Budapest by
P. Hauwert, Frames Oil & Gas Processing
Immobilized amine sorbents have mainly been studied for post-combustion CO2 capture from flue gases. However, they may also be interesting for removing sour gas components from methane-rich gases such as biogas and high pressure natural gas. In comparison with conventional amine solutions, the application of sorbents reduces equipment size due to enhanced mass transfer and reduces energy required for regeneration. Depending on scale of operations, contactor concepts based on solids circulation and fluidization may be favored over a fixed bed contactor. Process studies for treatment of biogas and high pressure natural gas will be discussed, showing that energy savings around 20% are possible for natural gas sweetening. Using these immobilized amines in multi-staged fluidized bed reactors, the size of the absorber can be decimated.
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