Experimental investigation on the CO2 separation performance from humid flue gas by TSA process
Experimental investigation on the CO2 separation performance from humid flue gas by TSA process
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DOI：
10.1016/j.seppur.2018.06.008
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发表时间：
2018-12
影响因子：
8.6
通讯作者：
Y. Osaka;T. Tsujiguchi;A. Kodama
中科院分区：
文献类型：
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作者：
Y. Osaka;T. Tsujiguchi;A. Kodama
采用热摆式吸附(TSA)工艺脱除火力发电厂中的二氧化碳。众所周知，在TSA过程中，水蒸气的共存阻碍了CO2的吸附吸收。本文从动力学角度研究了脱附过程中脱附温度和相对湿度对TSA过程中CO2捕集性能的影响。在无水条件下，吸附量减少一半，当相对湿度为1.1%，393 K时，吸附量降至2.5 mg-CO2/goneycomb。CO2吸附性能的回收率取决于相对湿度，而不是解吸温度。因此，在TSA过程中，如果使用更好的水蒸气解吸吸附剂，可以忽略水蒸气的影响。这还有一个额外的好处，即在前处理过程中消除了去除蒸汽的需要。
This work was aimed at removing CO2from a fire power plant by using the thermal swing adsorption (TSA) process. It is well known that CO2adsorption uptake is blocked by the coexistence of steam in the TSA process. In this paper, the influence of desorption temperature and relative humidity in the desorption process on the CO2capture performance during the TSA process is kinetically investigated. Under conditions without water, the adsorption decreases by half; when the relative humidity is 1.1% at 393 K, adsorption decreases to 2.5 mg-CO2/ghoneycomb. The recovery ratio of the CO2adsorption performance depends on the relative humidity, not the desorption temperature. Therefore, in the TSA process, it is expected that the influence of steam can be disregarded if a better steam desorption adsorbent is used. This has the added benefit of eliminating the need to remove steam during preprocessing.