CO₂ removal

CO₂ removal is required in many applications. Eastman AdapT solvents rely on the chemistry of the different amine-CO₂ reactions to optimize the performance for each application.

Through selection of the type and concentration of the different amines, the CO₂ removal rate and absorption capacity can be adapted. In addition to CO₂ removal efficiency, system corrosion and operational limitations can also be important factors in solvent selection.

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• Reaction chemistry of CO₂ absorption

Bulk CO₂ Removal

Solvents for bulk CO₂ removal are used for natural gas and syngas plants. Typical treated gas specifications require a high volume percentage.Thermal regeneration of the solvent is not always essential to meet the specifications but in most cases is preferred. The alternative to thermal regeneration is flash regeneration, which yields to strong reduction in energy consumption. However, this process is less robust against changing gas composition, operating conditions, and external contamination.

Products:

Eastman AdapT 100 series - formulated for a broad range of applications.

Eastman AdapT 200 series - formulated for enhanced CO₂ removal.

Deep CO₂ Removal

Solvents for deep CO₂ removal are used in liquefied natural gas (LNG) plants and ammonia plants. Deep CO₂ removal requires a higher reactivity between CO₂ and the solvent, which can be accomplished with Eastman AdapT 200 series solvents. In addition to solvent reactivity, residual loading of the lean solvent and absorption conditions are also key factors in determining the optimal solvent and plant design. Towers for treatment of natural gas with the aim of producing LNG are often equipped with additional trays. The regeneration section is expanded with additional heat input and stripping stages to drive the lean solvent loading to challengingly low levels.

Products:

Eastman AdapT 200 series - formulated for deep CO₂ removal.