Document Detail


Parametric analysis of a novel cryogenic CO2 capture system based on Stirling coolers (SCs).
MedLine Citation:
PMID:  23126533     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
CO2 capture and storage (CCS) is an important alternative to control greenhouse gas (GHG) effects. In previous work, a novel desublimation CO2 capture process has been exploited making use of three free piston Stirling coolers (namely, SC-1, SC-2 and SC-3, respectively). Based on the developed system, moisture and CO2 in the flue gas can condense and desublimate in the pre-freezing and main-freezing towers, respectively. Meanwhile, the storage column is chilled by SC-3 to preserve the frosted CO2, and permanent gas (such as N2) passes through the system without phase change. The whole process can be implemented at atmospheric pressure and reduce the energy penalty (e.g. solvent regeneration and pressure drop) in other technologies. In this work, the influence of process parameters has been investigated in detail. The optimal conditions for the system are as follows: idle operating time is 240 min, flow rate is 5 L/min, vacuum degree of the interlayer is 2.2×103 Pa and temperature of SC-1, 2 and 3 are -30 °C, -120 °C and -120 °C, respectively. Under these conditions, the energy consumption of the system is around 0.5 MJ electrical /kg CO2 with above 90 % CO2 recovery.
Authors:
Chun Feng Song; Yutaka Kitamura; Shu Hong Li; Weizhong Jiang
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-5
Journal Detail:
Title:  Environmental science & technology     Volume:  -     ISSN:  1520-5851     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-6     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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