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Energy Minimization and Ammonia Abatement for CO2 Capture Using a Blend of Ammonia and 2-Amino-2-Methyl-1-Propanol Solution

Title
Energy Minimization and Ammonia Abatement for CO2 Capture Using a Blend of Ammonia and 2-Amino-2-Methyl-1-Propanol Solution
Author
김우승
Keywords
post-combustion; CO2 capture; AMP; greenhouse gases; ammonia based; CARBON-DIOXIDE ABSORPTION; AQUEQUS AMMONIA; POSTCOMBUSTION CAPTURE; POWER-PLANTS; HEMISPHERICAL CONTACTOR; PROCESS SIMULATIONS; PART II; PERFORMANCE; KINETICS; MONOETHANOLAMINE
Issue Date
2015-07
Publisher
TAYLOR & FRANCIS INC
Citation
SEPARATION SCIENCE AND TECHNOLOGY, v. 50, No. 10, Page. 1565-1576
Abstract
An aqueous ammonia based CO2 capture offers several advantages over the conventional monoethanolamine (MEA) solvent, including a high CO2 loading capacity, low stripper heat duty, a lower degradation rate of solvent, low equipment corrosion, and the ability to capture multipollutants. However, in order to make an aqueous, ammonia-based CO2 capturing process economically feasible, attention must be paid to the following issues: ammonia slip due to the high evaporation rate of ammonia, energy input for CO2 regeneration, and CO2 removal efficiency improvements. In conventional, aqueous ammonia-based CO2 capture, the process either needs to operate at very low temperatures or must include wash-water columns to mitigate ammonia slips, which increase the capital and operational costs of the system. In this paper, a blended solution of 2-amino-2-methyl-1-propanol (AMP) and ammonia was used to analyze the CO2 capture efficiency, ammonia slip, and stripper heat duty. Our results show that, using the blended (30 wt.% AMP + 3 wt.% NH3) solution for CO2 capture, the ammonia slip was reduced by 64% at a lean CO2 loading of 0.07, CO2 capture efficiency was increased by 17.2%, and the heat duty requirement for CO2 regeneration was reduced by 80% at a stripper inlet temperature of 60 degrees C. Moreover, the loss of AMP due to evaporation was 0.042 kg/day.
URI
http://www.tandfonline.com/doi/abs/10.1080/01496395.2014.976880http://hdl.handle.net/20.500.11754/37084
ISSN
0149-6395; 1520-5754
DOI
10.1080/01496395.2014.976880
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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