A Parametric Study for Regenerative Ammonia-Based Scrubbing for the Capture of CO2

Conference · Fri Sep 01 04:00:00 EDT 2006

OSTI ID:938554

Resnik, K P; Garber, W; Hreda, D C; Yeh, J T; Pennline, H W

A continuous gas and liquid flow, regenerative scrubbing process for CO2 capture is currently being demonstrated at the bench-scale level. An aqueous ammonia-based solution captures CO2 from simulated flue gas in an absorber and releases a nearly pure stream of CO2 in the regenerator. After the regeneration, the solution of ammonium compounds is recycled to the absorber. The design of the continuous flow unit was based on earlier exploratory results from a semi-batch reactor, where a CO2 and N2 gas mixture flowed through a well-mixed batch of ammonia-based solution. Recently, a series of tests have been conducted on the continuous unit to observe the effect of various parameters on CO2 removal efficiency and regenerator effectiveness within the flow system. The parameters that were studied include absorber temperature, regenerator temperature, initial NH3 concentration, simulated flue gas flow rate, liquid solvent inventory in the flow system, and height of the packed-bed absorber. Results from this current testing campaign conducted in the continuous scrubbing unit as well as test results from a 5-cycle semi-batch reactor will be discussed.

• Research Organization: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR
• Sponsoring Organization: USDOE - Office of Fossil Energy (FE)
• OSTI ID: 938554
• Report Number(s): DOE/NETL-IR-2006-151; NETL-TPR-1448
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
AMMONIUM COMPOUNDS
COAL
DESIGN
EFFICIENCY
FIELD TESTS
FLOW RATE
FLUE GAS
GASIFICATION
LINERS
LIQUID FLOW
MIXTURES
PHOSPHATES
POWER PLANTS
REFRACTORIES
REGENERATION
REGENERATORS
REMOVAL
SCRUBBING
SERVICE LIFE
SOLVENTS
TESTING