Radically New Adsorption Cycles for Carbon Dioxide Sequestration. (Final Report, September 1, 2003-March 31, 2005).

Ritter, J. A. ; Ebner, A. D. ; McIntyre, J. A. ; Reynolds, S. P.

Technical Information Center Oak Ridge Tennessee

关键词: Carbon dioxide;    Sequestration;    Mathematical models;    Physical properties;    Light reflux;   

RP-ID  :  DE2006862198

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

In Parts I and II of this project, a rigorous pressure swing adsorption (PSA) process simulator was used to study new, high temperature, PSA cycles, based on the use of a K-promoted HTlc adsorbent and 4- and 5-step (bed) vacuum swing PSA cycles, which were designed to process a typical stack gas effluent at 575 K containing (in vol%) 15 % CO2, 75% N2 and 10% H2O into a light product stream depleted of CO2 and a heavy product stream enriched in CO2. Literally, thousands (2,850) of simulations were carried out to the periodic state to study the effects of the light product purge to feed ratio, cycle step time or cycle time, high to low pressure ratio, and heavy product recycle ratio (R) on the process performance, while changing the cycle configuration from 4- to 5-step (bed) designs utilizing combinations of light and heavy reflux steps, two different depressurization modes, and two sets of CO2 -HTlc mass transfer coefficients. The process performance was judged in terms of the CO2 purity and recovery, and the feed throughput.